Some standard content:
ICS23.160
Machinery Industry Standard of the People's Republic of China
JB/T10280-2001
Spray granulation fluidized-bed dryers2001-06-04 Issued
China Machinery Industry Federation
2001-10-01 Implementation
JB/T10280—2001
The preparation of product models implements the provisions of JB/T69241998 "Drying Equipment Product Model Preparation Method" standard. Appendix A and Appendix B of this standard are the appendices of the standard. This standard is proposed and managed by the Mechanical Industry Drying Equipment Standardization Technical Committee. Drafting units of this standard: Hangzhou Qianjiang Food Machinery Factory, Zhejiang University of Technology. The main drafters of this standard: Du Kepu, Yang Asan, Cheng Rong, Sun Qin, Zheng Yanping. This standard is released for the first time.
1 Scope
Machinery Industry Standard of the People's Republic of China
Spray granulation fluidized-bed dryers
Spray granulation fluidized-bed dryers JB/T10280—2001
This standard specifies the structural type, technical requirements, basic parameters, test methods, inspection rules, marking, and packaging, transportation, storage and other requirements of spray granulation fluidized bed dryers (hereinafter referred to as dryers). This standard is applicable to various shapes of spray granulation fluidized bed dryers for continuous and intermittent operation. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards GB191-2000
GB/T 63881986
GB/T133061991
SJ/T106741995
3 Terms
This standard adopts the following definitions.
Packaging storage and transportation pictorial signs
Transport packaging receiving and shipping signs
General technical conditions for coating
Particle size qualification rate (symbol: h, %): For continuously operated dryers, it refers to the mass percentage of the exported materials that meet the product particle size requirements in the spray granulation drying process to the total exported materials: For intermittently operated dryers, it refers to the mass percentage of the materials that meet the product particle size requirements in each batch of spray granulation dried materials to the total materials. 4 Types and basic parameters
4.1 Structure
4.1.1 The structural types of dryers can be divided into two types: horizontal and vertical. 4.1.2 The dryer consists of a liquid conveying device, an air chamber, a distribution plate, an atomizer, a granulation drying chamber, etc. 4.2 Product model
4.2.1 Representation method
Approved by China Machinery Industry Federation on June 4, 2001, implemented on October 1, 2001
4.2.2 Marking example
JB/T10280-2001
Improved design sequence code (A, B, C in sequence) Main parameters. The horizontal dryer is represented by the width × length (10-m) of the distribution plate, and the vertical dryer is represented by the diameter (10m) of the distribution plate
Auxiliary characteristic code. The horizontal dryer is represented by the first capital letter "Z" and "W" of the Chinese pinyin for "granulation" and "horizontal", respectively, and the vertical dryer is represented by only "Z". The main feature code is represented by the first capital letter "L" of the Chinese pinyin for "fluidized bed". The professional code is represented by the first capital letter "G" of the Chinese pinyin for "drying equipment". GLZW-30X240 represents a spray granulation horizontal fluidized bed dryer with a distribution plate of 300mm×2400mm. GLZ-30 represents a spray granulation vertical fluidized bed dryer with a distribution plate diameter of Φ300mm. 4.3 Basic parameters The basic parameters of the dryer shall comply with the requirements of Table 1. Table 1 Basic parameters
5 Requirements
Basic specifications
(Main parameters)
GLZ-30
GLZ-50
GLZ-75
GLZH00
GLZ150
GLZ-200
GLZW-30X 240
GLZW=40X 320
GLZW-60X 480
GLZW80X 640
GLZW-100X800
GLZW-150X1200
Distribution plate size
300X2400
400×3200
600X4800
800X6400
1000×8000
1500X12000
Particle size qualification rate
Intermittent operation:
Continuous operation:
Drying intensity
Intermittent operation:
Continuous operation:
≥200
≥150
5.1 The dryer shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures or according to the requirements agreed by the supply and demand parties.
5.2 Structural requirements
JB/T10280—2001
5.2.1 Make the gas evenly distributed in the fluidized bed (each chamber) and can be adjusted at will. 5.2.2 Have the conditions for observation and installation of detection instruments. 5.2.3 Have hand holes or manholes for installation, maintenance and cleaning. 5.3 Manufacturing quality
5.3.1 The materials used in the main components of the dryer shall comply with the design requirements. 5.3.2 The sight hole clips should be arranged neatly.
5.3.3 The edges of the sealing gaskets should be neat.
5.3.4 The machining roughness of the surfaces of the dryer, atomizing nozzle, etc. that contact the material shall not be higher than 1.6um5.4 Appearance quality
The appearance quality of the coating shall comply with the requirements of the appearance quality of the coating of Class II in 1.3.1 of SJ/T106741995. 5.5 Load technical performance
5.5.1 When the drying and granulation performance test is carried out according to Appendix A, the particle size qualification rate shall comply with the provisions in Table 1. 5.5.2 When the drying and granulation performance test is carried out according to Appendix B, the drying strength shall comply with the provisions in Table 1. 5.5.3 The dryer shall be able to meet the granulation and drying requirements of other materials within the applicable range. 5.6 Reliability
Under the condition that the user complies with the maintenance and use rules of the dryer, the reliable working time of the dryer shall be no less than 10,000 hours (excluding wearing parts).
6 Test method
6.1 After each unit is tested and operated separately, it is confirmed that it is running normally. After the inspection is qualified, the system can be debugged. 6.2 The atomizer is sprayed with clean water to observe the atomization situation, and the position of the liquid nozzle of the airflow atomizer and the airflow nozzle is adjusted to obtain the most suitable atomization cone. For the pressure atomizer, the pressure of the liquid can be adjusted to obtain the most suitable atomization cone. 6.3 The particle size qualification rate of the material during the granulation and drying process shall be tested in accordance with the provisions of Appendix A. 6.4 The drying intensity of the dryer shall be tested in accordance with the provisions of Appendix B. 6.5 The dryer shall meet the granulation and drying requirements of other materials within the applicable scope, and the on-site operation shall be carried out according to the process conditions and requirements of the material granulation and drying operation in actual production to check the degree to which the dryer meets the user's requirements for the granulation and drying effect of the material (which can be evaluated according to standards, agreements or contracts).
6.6 The reliability test of the dryer shall be carried out at the experimental point established by the user, and a report shall be submitted. The results shall comply with the provisions of 5.6. 7 Inspection rules
7.1 The dryer must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a product quality certificate before it can leave the factory. 7.2 The inspection of the dryer is divided into factory inspection and type inspection. 7.2.1 Factory inspection
7.21.1 Each dryer must undergo factory inspection, that is, a no-load running test of no less than 2 hours, and an inspection of the provisions of 5.3 and 54.
7.2.1.2 If any one of the factory inspection items is unqualified, the product will be unqualified. 7.21.3 For products assembled on site, the factory inspection items can be carried out at the installation and commissioning production site, and the on-site commissioning report tested by the manufacturer's commissioning personnel can be used as the basis for delivery.
7.2.2 Type inspection
JB/T10280—2001
7.2.2.1 Type inspection should be carried out in any of the following cases: a) When the product is tested for trial production or when the production is transferred to another factory; b) When the product is produced again after being discontinued for 2 years; c) When every 100 units (referring to the same specifications) are produced during normal production; d) When there are major changes in the structure, materials and process of the product; e) When the national quality supervision agency proposes a type inspection requirement. 7.2.2.2 In addition to the contents of the factory inspection, the type inspection shall also be carried out in accordance with the requirements of 5.5.1 and 5.5.2. 7.2.2.3 When the requirements of 5.5.1 and 5.5.2 cannot be inspected due to objective reasons, the inspection of 5.5.3 may be substituted. 7.2.2.4 One prototype for type inspection shall be randomly selected from the manufacturer. When inspecting 5.5.3, the materials and prototypes may be selected at any time through consultation by relevant personnel.
7.2.2.5 If one of the items in the type inspection fails, the item shall be double sampled for re-inspection. If one item still fails, the product shall not be accepted. 8 Marking, packaging, transportation, storage
8.1 Marking
8.1.1 Product marking
Each product shall be fixed with a product label in a conspicuous place. Its type, size and technical requirements shall comply with the provisions of GB/T13306. Its contents shall include:
a) Product name;
b) Manufacturer's name and address:
c) Trademark:
d) Product model:
e) Manufacturing date:
Product factory number and production batch number;
g) Product main parameters.
8.1.2 Packaging Marks
There should be signs such as receiving and delivering, packaging, storage and transportation on the outer surface of the product packaging material. The packaging marks should comply with the provisions of GB/T6388 and GB191.
8.2 Packaging
8.21 The dryer is unpackaged. According to the special requirements of the user, it can be packed by parts. The product parts should be fixed and secure in the box, and rain protection measures should be taken.
8.2.2 Packaging Precautions
a) The packaging should be marked according to the code in the manual: b) Anti-rust grease should be applied to the treated surface of carbon steel parts before packaging: c) The atomizer uses soft packaging and each piece is packed separately and then packed: d) Standard parts should be classified and packed in plastic bags separately; e) Instruments such as pressure gauges and thermometers should be packed separately. 4
8.2.3 The accompanying documents of the product shall include:
a) Product certificate;
JB/T10280—2001
b) Product instruction manual (including product installation diagram);) Packing list (including random spare parts and tool list). Transportation
Dryer and packaging shall be protected from damage during transportation. During transportation, the dryer shall be covered with a awning or other rainproof measures shall be taken. 8.4 Storage
8.4.1 The storage area shall be flat, ventilated and dry. 8.4.2
When storing in the open air, a awning or other rainproof measures shall be taken. Maintenance shall be carried out once the storage time exceeds 18 months. 5
A1Test instruments
JB/T10280—2001
Appendix A
(Appendix to the standard)
Test method for particle size qualification rate of spray granulation fluidized bed dryer The export material is graded using a standard sieve equipped with two layers of standard sieves (upper layer 10 mesh, lower layer 18 mesh). The mass of each part is weighed using a measuring scale with an accuracy of not less than 1.5. A2Test conditions
A21 The material is potassium carbonate with an initial moisture content of 40%~50% (solution), and the solution temperature is 50℃±2℃. A2.2 The fluidized bed is loaded with 0.1~0.3mm particle size dry material as the bottom material, and the static bed height is: 200mm±5mm. A23 The normal working conditions of the dryer should meet the following requirements: a) Dryer inlet air temperature: 300℃±5℃: b) Dryer empty bed air velocity (normal temperature): 0.5~2.0m/s (increases with the increase of particle size in each chamber): c) Fluidized bed temperature: 130~140℃;
d) Final moisture content: ≤0.1%;
e) Final particle size: 1-2mm, the system is self-balanced. A3 Test method
A3.1 Continuous operation
Adjust the operating air velocity to make the material in the fluidized bed (each chamber) fluidized well, and start feeding and discharging when the bed temperature reaches 130℃±5℃. Continuously adjust the operating air velocity according to the fluidization state, and continuously adjust the feed amount according to the bed temperature (automatically). After the operation is stable (5~10h is required to reach stability), take samples from the discharge port every 30min, for a total of three samples, each sampling time is 5~10min, screen the samples, and measure the quality of each part. Calculate the particle size qualification rate of the three samples, and the arithmetic mean is the particle size qualification rate of the dryer. A3.2 Intermittent operation
Adjust the operating air velocity to make the material in the fluidized bed fluidized well, and start feeding when the bed temperature reaches 130℃±5℃. As the spray granulation drying process proceeds, continuously increase the operating air velocity to ensure a good fluidization state. At the same time, continuously adjust the feed amount (automatically) according to the bed temperature until the required particle size is fully reached (the operation time takes about 3~5h). Carry out three repeated tests, screen each batch of materials, and measure the quality of each part. Calculate the particle size qualification rate of the three operations, and the arithmetic mean is the particle size qualification rate of the dryer. 6
Test instruments
JB/T10280—2001
Appendix B
(Appendix of the standard)
Test method for drying strength of spray granulation fluidized bed dryer The moisture content of the material is determined by weight loss method. It is measured in an oven, and its temperature is not more than 105℃. The temperature is measured by a thermometer with an accuracy of not less than 1.5. bZxz.net
2 Test conditions
B2.1 The test should be carried out when the dryer is in normal operation and working state. B2.2 Test conditions are in accordance with A2.3 in Appendix A.
B3 Test method
1 Sampling time
Continuous operation should start sampling after the system is stable. Intermittent operation, sampling after each batch of operation is completed. B3.2 Sampling method
Continuous operation, take samples from the discharge port every 30 minutes, take three samples in total, measure the moisture content, and record the feed volume every 30 minutes during the sampling stage. Intermittent operation, record the operation time and total feed volume, take three samples from each batch of materials, measure the moisture content, calculate the arithmetic mean of the moisture content of the three samples, and repeat the operation three times. 4 Calculation of Drying Strength
Drying strength is calculated according to formula (B1):
m(ww,)
tA(1-W2)
Wherein: P
—drying strength, kg/(m2.h);
feeding amount within the calculation time of continuous operation or feeding amount per batch of intermittent operation, kg: moisture content of material before drying (wet basis), %
moisture content of material after drying (wet basis), %: W2
—calculation time of continuous operation or operation time per batch of intermittent operation, h; A
—area of distribution plate of dryer, m2.
The arithmetic mean of the drying strength of the samples calculated three times is the drying strength of the dryer. (B1)
Mechanical Industry Standard
Spray Granulation Fluidized Bed Dryer
JB/T10280-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Words 16000
First Edition in September 2001
First Printing in September 2001
Print Quantity 1-500
Price 1200 Yuan
2001-097
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn181 Product markings
Each product shall be fixed with a product label in a conspicuous place. Its type, size and technical requirements shall comply with the provisions of GB/T13306. Its contents include:
a) Product name;
b) Manufacturer name and address:
c) Trademark:
d) Product model:
e) Manufacturing date:
Product factory number and production batch number;
g) Product main parameters.
8.1.2 Packaging markings
There shall be signs such as receiving and delivering, packaging, storage and transportation on the outer surface of the product packaging material. The packaging markings shall comply with the provisions of GB/T6388 and GB191.
8.2 Packaging
8.21 The dryer has no packaging. According to the special requirements of the user, it can be packed by components. The product components shall be fixed reliably in the box and have rainproof measures.
8.2.2 Packaging precautions
a) The package should be marked according to the code in the manual: b) Anti-rust grease should be applied to the surface of carbon steel parts before packaging: c) The atomizer is packaged in soft packaging and each piece is packed separately and then packed: d) Standard parts should be classified and packed in plastic bags separately; e) Pressure gauges, thermometers and other instruments should be packed separately. 4
8.2.3 The accompanying documents of the product should include:
a) Product certificate;
JB/T10280—2001
b) Product manual (including product installation diagram):) Packing list (including random spare parts and tool list). Transportation
During transportation, the dryer and packaging must be protected from damage. During transportation, a canopy or other rain protection measures should be taken. 8.4 Storage
8.4.1 The storage site should be flat, ventilated and dry. 8.4.2
When storing in the open air, there should be a canopy or other rain protection measures. If the storage time exceeds 18 months, maintenance should be carried out once. 5
A1 Test instruments
JB/T10280—2001
Appendix A
(Appendix to the standard)
Test method for particle size qualification rate of spray granulation fluidized bed dryer The export material is graded using a standard sieve equipped with two layers of standard sieves (upper layer 10 mesh, lower layer 18 mesh). The mass of each part is weighed using a measuring scale with an accuracy of not less than 1.5. A2 Test conditions
A21 The material is potassium carbonate with an initial moisture content of 40%~50% (solution), and the solution temperature is 50℃±2℃. A2.2 The fluidized bed is loaded with 0.1~0.3mm particle size dry material as the bottom material, and the static bed height is: 200mm±5mm. A23 The normal working conditions of the dryer should meet the following requirements: a) Dryer inlet air temperature: 300℃±5℃: b) Dryer empty bed air velocity (normal temperature): 0.5~2.0m/s (increases with the increase of particle size in each chamber): c) Fluidized bed temperature: 130~140℃;
d) Final moisture content: ≤0.1%;
e) Final particle size: 1-2mm, the system is self-balanced. A3 Test method
A3.1 Continuous operation
Adjust the operating air velocity to make the material in the fluidized bed (each chamber) fluidized well, and start feeding and discharging when the bed temperature reaches 130℃±5℃. Continuously adjust the operating air velocity according to the fluidization state, and continuously adjust the feed amount according to the bed temperature (automatically). After the operation is stable (5~10h is required to reach stability), take samples from the discharge port every 30min, for a total of three samples, each sampling time is 5~10min, screen the samples, and measure the quality of each part. Calculate the particle size qualification rate of the three samples, and the arithmetic mean is the particle size qualification rate of the dryer. A3.2 Intermittent operation
Adjust the operating air velocity to make the material in the fluidized bed fluidized well, and start feeding when the bed temperature reaches 130℃±5℃. As the spray granulation drying process proceeds, continuously increase the operating air velocity to ensure a good fluidization state. At the same time, continuously adjust the feed amount (automatically) according to the bed temperature until the required particle size is fully reached (the operation time takes about 3~5h). Carry out three repeated tests, screen each batch of materials, and measure the quality of each part. Calculate the particle size qualification rate of the three operations, and the arithmetic mean is the particle size qualification rate of the dryer. 6
Test instruments
JB/T10280—2001
Appendix B
(Appendix of the standard)
Test method for drying strength of spray granulation fluidized bed dryer The moisture content of the material is determined by weight loss method. It is measured in an oven, and its temperature is not more than 105℃. The temperature is measured by a thermometer with an accuracy of not less than 1.5.
2 Test conditions
B2.1 The test should be carried out when the dryer is in normal operation and working state. B2.2 Test conditions are in accordance with A2.3 in Appendix A.
B3 Test method
1 Sampling time
Continuous operation should start sampling after the system is stable. Intermittent operation, sampling after each batch of operation is completed. B3.2 Sampling method
Continuous operation, take samples from the discharge port every 30 minutes, take three samples in total, measure the moisture content, and record the feed volume every 30 minutes during the sampling stage. Intermittent operation, record the operation time and total feed volume, take three samples from each batch of materials, measure the moisture content, calculate the arithmetic mean of the moisture content of the three samples, and repeat the operation three times. 4 Calculation of Drying Strength
Drying strength is calculated according to formula (B1):
m(ww,)
tA(1-W2)
Wherein: P
—drying strength, kg/(m2.h);
feeding amount within the calculation time of continuous operation or feeding amount per batch of intermittent operation, kg: moisture content of material before drying (wet basis), %
moisture content of material after drying (wet basis), %: W2
—calculation time of continuous operation or operation time per batch of intermittent operation, h; A
—area of distribution plate of dryer, m2.
The arithmetic mean of the drying strength of the samples calculated three times is the drying strength of the dryer. (B1)
Mechanical Industry Standard
Spray Granulation Fluidized Bed Dryer
JB/T10280-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Words 16000
First Edition in September 2001
First Printing in September 2001
Print Quantity 1-500
Price 1200 Yuan
2001-097
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn181 Product markings
Each product shall be fixed with a product label in a conspicuous place. Its type, size and technical requirements shall comply with the provisions of GB/T13306. Its contents include:
a) Product name;
b) Manufacturer name and address:
c) Trademark:
d) Product model:
e) Manufacturing date:
Product factory number and production batch number;
g) Product main parameters.
8.1.2 Packaging markings
There shall be signs such as receiving and delivering, packaging, storage and transportation on the outer surface of the product packaging material. The packaging markings shall comply with the provisions of GB/T6388 and GB191.
8.2 Packaging
8.21 The dryer has no packaging. According to the special requirements of the user, it can be packed by components. The product components shall be fixed reliably in the box and have rainproof measures.
8.2.2 Packaging precautions
a) The package should be marked according to the code in the manual: b) Anti-rust grease should be applied to the surface of carbon steel parts before packaging: c) The atomizer is packaged in soft packaging and each piece is packed separately and then packed: d) Standard parts should be classified and packed in plastic bags separately; e) Pressure gauges, thermometers and other instruments should be packed separately. 4
8.2.3 The accompanying documents of the product should include:
a) Product certificate;
JB/T10280—2001
b) Product manual (including product installation diagram):) Packing list (including random spare parts and tool list). Transportation
During transportation, the dryer and packaging must be protected from damage. During transportation, a canopy or other rain protection measures should be taken. 8.4 Storage
8.4.1 The storage site should be flat, ventilated and dry. 8.4.2
When storing in the open air, there should be a canopy or other rain protection measures. If the storage time exceeds 18 months, maintenance should be carried out once. 5
A1 Test instruments
JB/T10280—2001
Appendix A
(Appendix to the standard)
Test method for particle size qualification rate of spray granulation fluidized bed dryer The export material is graded using a standard sieve equipped with two layers of standard sieves (upper layer 10 mesh, lower layer 18 mesh). The mass of each part is weighed using a measuring scale with an accuracy of not less than 1.5. A2 Test conditions
A21 The material is potassium carbonate with an initial moisture content of 40%~50% (solution), and the solution temperature is 50℃±2℃. A2.2 The fluidized bed is loaded with 0.1~0.3mm particle size dry material as the bottom material, and the static bed height is: 200mm±5mm. A23 The normal working conditions of the dryer should meet the following requirements: a) Dryer inlet air temperature: 300℃±5℃: b) Dryer empty bed air velocity (normal temperature): 0.5~2.0m/s (increases with the increase of particle size in each chamber): c) Fluidized bed temperature: 130~140℃;
d) Final moisture content: ≤0.1%;
e) Final particle size: 1-2mm, the system is self-balanced. A3 Test method
A3.1 Continuous operation
Adjust the operating air velocity to make the material in the fluidized bed (each chamber) fluidized well, and start feeding and discharging when the bed temperature reaches 130℃±5℃. Continuously adjust the operating air velocity according to the fluidization state, and continuously adjust the feed amount according to the bed temperature (automatically). After the operation is stable (5~10h is required to reach stability), take samples from the discharge port every 30min, for a total of three samples, each sampling time is 5~10min, screen the samples, and measure the quality of each part. Calculate the particle size qualification rate of the three samples, and the arithmetic mean is the particle size qualification rate of the dryer. A3.2 Intermittent operation
Adjust the operating air velocity to make the material in the fluidized bed fluidized well, and start feeding when the bed temperature reaches 130℃±5℃. As the spray granulation drying process proceeds, continuously increase the operating air velocity to ensure a good fluidization state. At the same time, continuously adjust the feed amount (automatically) according to the bed temperature until the required particle size is fully reached (the operation time takes about 3~5h). Carry out three repeated tests, screen each batch of materials, and measure the quality of each part. Calculate the particle size qualification rate of the three operations, and the arithmetic mean is the particle size qualification rate of the dryer. 6
Test instruments
JB/T10280—2001
Appendix B
(Appendix of the standard)
Test method for drying strength of spray granulation fluidized bed dryer The moisture content of the material is determined by weight loss method. It is measured in an oven, and its temperature is not more than 105℃. The temperature is measured by a thermometer with an accuracy of not less than 1.5.
2 Test conditions
B2.1 The test should be carried out when the dryer is in normal operation and working state. B2.2 Test conditions are in accordance with A2.3 in Appendix A.
B3 Test method
1 Sampling time
Continuous operation should start sampling after the system is stable. Intermittent operation, sampling after each batch of operation is completed. B3.2 Sampling method
Continuous operation, take samples from the discharge port every 30 minutes, take three samples in total, measure the moisture content, and record the feed volume every 30 minutes during the sampling stage. Intermittent operation, record the operation time and total feed volume, take three samples from each batch of materials, measure the moisture content, calculate the arithmetic mean of the moisture content of the three samples, and repeat the operation three times. 4 Calculation of Drying Strength
Drying strength is calculated according to formula (B1):
m(ww,)
tA(1-W2)
Wherein: P
—drying strength, kg/(m2.h);
feeding amount within the calculation time of continuous operation or feeding amount per batch of intermittent operation, kg: moisture content of material before drying (wet basis), %
moisture content of material after drying (wet basis), %: W2
—calculation time of continuous operation or operation time per batch of intermittent operation, h; A
—area of distribution plate of dryer, m2.
The arithmetic mean of the drying strength of the samples calculated three times is the drying strength of the dryer. (B1)
Mechanical Industry Standard
Spray Granulation Fluidized Bed Dryer
JB/T10280-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Words 16000
First Edition in September 2001
First Printing in September 2001
Print Quantity 1-500
Price 1200 Yuan
2001-097
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn181~0.3mm particle size dry material is used as the bottom material, and the static bed height is 200mm±5mm. The normal working conditions of A23 dryer should meet the following requirements: a) Dryer inlet air temperature: 300℃±5℃: b) Dryer empty bed gas velocity (normal temperature): 0.5~2.0m/s (increases with the increase of particle size in each chamber): c) Fluidized bed temperature: 130~140℃;
d) Final moisture content: ≤0.1%;
e) Final particle size: 1-2mm, the system is self-balanced. A3 test method
A3.1 Continuous operation
Adjust the operating gas velocity to make the material in the fluidized bed (each chamber) fluidized well, and start feeding and discharging when the bed temperature reaches 130℃±5℃. Continuously adjust the operating gas velocity according to the fluidization state, and continuously adjust the feed amount according to the bed temperature (automatically). After the operation is stable (5~10h is required to reach stability), take samples from the discharge port every 30min, for a total of three samples, each sampling time is 5~10min, screen the samples, and measure the quality of each part. Calculate the particle size qualification rate of the three samples, and the arithmetic mean is the particle size qualification rate of the dryer. A3.2 Intermittent operation
Adjust the operating air velocity to make the material in the fluidized bed fluidized well, and start feeding when the bed temperature reaches 130℃±5℃. As the spray granulation drying process proceeds, continuously increase the operating air velocity to ensure a good fluidization state. At the same time, continuously adjust the feed amount (automatically) according to the bed temperature until the required particle size is fully reached (the operation time takes about 3~5h). Carry out three repeated tests, screen each batch of materials, and measure the quality of each part. Calculate the particle size qualification rate of the three operations, and the arithmetic mean is the particle size qualification rate of the dryer. 6
Test instruments
JB/T10280—2001
Appendix B
(Appendix of the standard)
Test method for drying strength of spray granulation fluidized bed dryer The moisture content of the material is determined by weight loss method. It is measured in an oven, and its temperature is not more than 105℃. The temperature is measured by a thermometer with an accuracy of not less than 1.5.
2 Test conditions
B2.1 The test should be carried out when the dryer is in normal operation and working state. B2.2 Test conditions are in accordance with A2.3 in Appendix A.
B3 Test method
1 Sampling time
Continuous operation should start sampling after the system is stable. Intermittent operation, sampling after each batch of operation is completed. B3.2 Sampling method
Continuous operation, take samples from the discharge port every 30 minutes, take three samples in total, measure the moisture content, and record the feed volume every 30 minutes during the sampling stage. Intermittent operation, record the operation time and total feed volume, take three samples from each batch of materials, measure the moisture content, calculate the arithmetic mean of the moisture content of the three samples, and repeat the operation three times. 4 Calculation of Drying Strength
Drying strength is calculated according to formula (B1):
m(ww,)
tA(1-W2)
Wherein: P
—drying strength, kg/(m2.h);
feeding amount within the calculation time of continuous operation or feeding amount per batch of intermittent operation, kg: moisture content of material before drying (wet basis), %
moisture content of material after drying (wet basis), %: W2
—calculation time of continuous operation or operation time per batch of intermittent operation, h; A
—area of distribution plate of dryer, m2.
The arithmetic mean of the drying strength of the samples calculated three times is the drying strength of the dryer. (B1)
Mechanical Industry Standard
Spray Granulation Fluidized Bed Dryer
JB/T10280-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Words 16000
First Edition in September 2001
First Printing in September 2001
Print Quantity 1-500
Price 1200 Yuan
2001-097
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn181~0.3mm particle size dry material is used as the bottom material, and the static bed height is 200mm±5mm. The normal working conditions of A23 dryer should meet the following requirements: a) Dryer inlet air temperature: 300℃±5℃: b) Dryer empty bed gas velocity (normal temperature): 0.5~2.0m/s (increases with the increase of particle size in each chamber): c) Fluidized bed temperature: 130~140℃;
d) Final moisture content: ≤0.1%;
e) Final particle size: 1-2mm, the system is self-balanced. A3 test method
A3.1 Continuous operation
Adjust the operating gas velocity to make the material in the fluidized bed (each chamber) fluidized well, and start feeding and discharging when the bed temperature reaches 130℃±5℃. Continuously adjust the operating gas velocity according to the fluidization state, and continuously adjust the feed amount according to the bed temperature (automatically). After the operation is stable (5~10h is required to reach stability), take samples from the discharge port every 30min, for a total of three samples, each sampling time is 5~10min, screen the samples, and measure the quality of each part. Calculate the particle size qualification rate of the three samples, and the arithmetic mean is the particle size qualification rate of the dryer. A3.2 Intermittent operation
Adjust the operating air velocity to make the material in the fluidized bed fluidized well, and start feeding when the bed temperature reaches 130℃±5℃. As the spray granulation drying process proceeds, continuously increase the operating air velocity to ensure a good fluidization state. At the same time, continuously adjust the feed amount (automatically) according to the bed temperature until the required particle size is fully reached (the operation time takes about 3~5h). Carry out three repeated tests, screen each batch of materials, and measure the quality of each part. Calculate the particle size qualification rate of the three operations, and the arithmetic mean is the particle size qualification rate of the dryer. 6
Test instruments
JB/T10280—2001
Appendix B
(Appendix of the standard)
Test method for drying strength of spray granulation fluidized bed dryer The moisture content of the material is determined by weight loss method. It is measured in an oven, and its temperature is not more than 105℃. The temperature is measured by a thermometer with an accuracy of not less than 1.5.
2 Test conditions
B2.1 The test should be carried out when the dryer is in normal operation and working state. B2.2 Test conditions are in accordance with A2.3 in Appendix A.
B3 Test method
1 Sampling time
Continuous operation should start sampling after the system is stable. Intermittent operation, sampling after each batch of operation is completed. B3.2 Sampling method
Continuous operation, take samples from the discharge port every 30 minutes, take three samples in total, measure the moisture content, and record the feed volume every 30 minutes during the sampling stage. Intermittent operation, record the operation time and total feed volume, take three samples from each batch of materials, measure the moisture content, calculate the arithmetic mean of the moisture content of the three samples, and repeat the operation three times. 4 Calculation of Drying Strength
Drying strength is calculated according to formula (B1):
m(ww,)
tA(1-W2)
Wherein: P
—drying strength, kg/(m2.h);
feeding amount within the calculation time of continuous operation or feeding amount per batch of intermittent operation, kg: moisture content of material before drying (wet basis), %
moisture content of material after drying (wet basis), %: W2
—calculation time of continuous operation or operation time per batch of intermittent operation, h; A
—area of distribution plate of dryer, m2.
The arithmetic mean of the drying strength of the samples calculated three times is the drying strength of the dryer. (B1)
Mechanical Industry Standard
Spray Granulation Fluidized Bed Dryer
JB/T10280-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Words 16000
First Edition in September 2001
First Printing in September 2001
Print Quantity 1-500
Price 1200 Yuan
2001-097
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn18
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