HG 2102-1991 External filter surface rotary drum vacuum alkali filter
Some standard content:
Chemical Industry Standard of the People's Republic of China
HG2102-91
External Filter Drum Vacuum Alkali Filter
Published on August 19, 1991
Ministry of Chemical Industry of the People's Republic of China
Implementation on January 1, 1992
Chemical Industry Standard of the People's Republic of China
External Filter Drum Vacuum Alkali Filter
Subject Content and Scope of Application
HG210291
This standard specifies the technical requirements, test methods, acceptance rules and packaging and transportation requirements for external filter surface rotary drum vacuum alkali filter (hereinafter referred to as alkali filter).
This standard applies to alkali filters for soda ash production with a filtration area of no more than 20m2. 2
Referenced standards
GB2100
GB4237
GB5676
GB9439
Steel pressure vessels
Packaging must be shipped with pictorial symbols
Technical conditions for ordinary carbon structural steel
Classification and technical conditions for carbon steel castings
Technical conditions for stainless acid-resistant steel castings||tt| |Hot-rolled stainless steel plate
Casting carbon steel for general engineering
Gray iron castings
GB10095
GB10894
Involute measuring column gear accuracy
Engineering method
Determination of noise power of separator
JB8 product label
JB2759
JB4385
General technical conditions for packaging of electromechanical products
General technical conditions for self-rusting forgings||t t||JB/ZQ400.10
Technical conditions for painting
3 Technical requirements
General requirements
Alkali filter shall comply with the provisions of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 3.2 Process conditions and performance requirements
Process conditions
Solid phase particle size in suspension: 0.06~0.13mm; Solid phase concentration in suspension (volume): 20%~45%; Suspension temperature: 30~50℃;
Operation Pressure: 0.03~0.05MPa (absolute pressure); drum speed: 0.5~3r/min;
Blowing pressure: 0.03~0.07MPa (gauge); washing water volume: 600~700kg/l.
Performance requirements
Approved by the Ministry of Chemical Industry of the People's Republic of China on August 19, 1991 and implemented on January 1, 1992
HIG2102-91
Under the conditions of Article 3.2.1, the performance of the alkali filter should meet the following requirements: Water content of heavy alkali after filtration: 15%~20%; b. Filtration intensity of soda ash: 0.7~11/h·m2; Solid content of mother liquor (residual volume): <2%.
3.3 Materials of main parts
3.3.1 The materials of main cast iron parts should meet the requirements of GB9439. The chemical composition and mechanical properties of carbon steel casting materials shall comply with the provisions of GB5676. 3.3.2
3.3.3 The materials of stainless acid-resistant steel castings shall comply with the provisions of GB2100. 3.3.4 The materials of ordinary carbon steel shall comply with the provisions of GB700. 3.3.5 The materials of stainless steel weldments shall comply with the provisions of GB4237. 3.3.6 All castings are equipped with stress relief.
3.3.7-The welding stress of stainless steel welded drums and misaligned axes shall be relieved before finishing. 3.4 Castings
3.4.1 The quality of gray iron castings shall comply with the relevant provisions of GB9439, 3.4.2 The quality of steel castings shall comply with the provisions of GB979, 3.5 Forgings
The quality of forgings shall comply with the Class III provisions of JB4385. 3.6 Welding of the rotary drum and the staggered air shaft
3.6.1 The welding of the rotary drum and the staggered air shaft shall be carried out in accordance with the relevant provisions of GB150. 3.6.2 The stainless steel weld shall be tested for intergranular corrosion tendency. 3.7: Machining
3.7.1 The manufacturing accuracy of the large gear shall not be lower than Grade 9 specified in GB10095. 3.7.2 The scraped surfaces of the two staggered air discs shall not have any traces of machining, and the scraped points shall be evenly spaced. The number of contact points on any 25mm×25mm area shall not be less than 13 points.
3.8 Sealing requirements
3.8.1 The channels of the distribution head and the staggered air shaft shall be tested for water at 0.2MPa, and shall not be filled for 5min. 3.8.2 The rotary drum shall be tested for kerosene penetration (water filling test is allowed, and maintained for 20min), and shall not leak. 3.8.3 The alkali liquid tank and the washing water tank should be tested for water filling respectively, and no water should be allowed to seep in for 20 minutes. 3.8.4 The whole machine should be well sealed and no leakage should be allowed. 3.9 Assembly requirements
3.9.1 The purchased supporting equipment (reducer or stepless speed regulator and motor, etc.) should have a certificate of conformity. 3.9.2 The iron and debris in the channels of the drum, staggered air shaft and distribution head must be cleaned up. 3.9.3 The channels of the drum, staggered air shaft and rotating staggered disc must be aligned, and the misalignment deviation shall not exceed 1/6 of the thickness of the partition bar. 3.9.4 The outer cylindrical surface of the assembled drum shall not have any protrusions. 3.9.5 The heads of the connecting screws of the two staggered air discs should be 2~5mm lower than the contact surface of the two staggered air discs. 3.9.6 The assembled blade should have its busbar aligned with the drum busbar, with a parallelism not exceeding 0.5mm per meter and a maximum of 1.5mm over the entire length.
3.9.7 The scraper blade for unloading should be straight and smooth, aligned with the drum busbar, with a parallelism not exceeding 0.5mm per meter and a maximum of 1.5mm over the entire length of the blade.
3.9.8 The overflow port of the water flow plate of the washing trough should be parallel to the drum busbar, with a parallelism not exceeding 12mm. 3.10 Safety and Environmental Protection
3.10.1 Open transmission devices should be equipped with protective covers. 3.10.2 When the alkali filter is running at no-load, the sound power level of the noise shall not exceed 85dB (A). 2
HG2102—
3.11 Painting
Except for stainless steel parts, the surfaces of non-processed metal parts shall be painted with anti-rust primer. The painting shall meet the requirements of JB/ZQ400.10. 3.12 Idle running test
a The temperature rise of each bearing shall not exceed 35℃, and the temperature shall not exceed 65; the radial runout of the outer cylinder of the drum to the common axis of the left and right journals shall be calculated according to the diameter size, and shall not exceed 0.5mm per meter. b
The maximum shall not exceed 1.5mm;
The gears of each part shall be well meshed without abnormal noise; the two staggered air discs shall be in close contact, and the distribution head shall not have shaking noise according to Article 3.10.2;||t t||f. The drum speed shall comply with 3.2.1 c.
Load test
The filtering intensity shall meet the requirements of 3.2.2 b; the filtering effect shall meet the requirements of 3.2.2 a, c; the noise level shall comply with 3.10.2;
The temperature rise of each bearing shall not exceed 40℃, and the overflow shall not exceed 70℃; the blowing force shall comply with 3.2.1 f
The operating force shall comply with 3.2.1 d;||tt| |The amount of washing water is in accordance with 3.2.1 g.
Test method
Sealing test of the whole machine
4.1.1 Before the test, the drum should be equipped with filter cloth and sealed well. 4.1.2 Connect the vacuum system and keep the operating force of the vacuum system at 0.03~0.05MPa (absolute K). 4.1.3 Use candlelight to check for leakage on the contact surface of the two staggered air plates, the joint of the liquid suction pipe, and the places where the filter cloth is pressed around the drum. 50mm away from the inspected part, the candlelight has no obvious inclination and is qualified. 4.2 Determination of noise
The determination of noise is carried out in accordance with the provisions of GB10894. 4.3 Idle running test
4.3.1 After the alkali filter is assembled and qualified, it should be tested for idle running on the test bench of the manufacturer one by one, and the running time should not be less than 8h. 4.3.2 The test requirements are in accordance with Article 3.12.
4.3.3 First run at the minimum speed of 0.5z/min for 15min, stop and check the machine. Then run at 1r/min for 1h, stop and check the machine again, and finally run at the maximum speed of 3r/min for 2h, and record the running situation every 0.5h. The selection of measuring instruments shall be in accordance with the provisions of the relevant standards.
4.4 Load test
4.4.1 The load test is carried out at the installation site. After the idle running test is passed, it shall be operated continuously for 8 hours under rated working conditions. 4.4.2 Test requirements shall be in accordance with Article 3.13.
4.4.3 Determination of solid particle size in the suspension shall be in accordance with the provisions of Appendix A. 4.4.4 Determination of solid concentration in the suspension Use a measuring cylinder with a diameter of 25~30mm and a capacity of 100mL to take 100mL of the stirred suspension from the alkali solution tank and immediately start timing with a stopwatch. When the sedimentation lasts for 100s, read the scale value of the sediment. The percentage of this value to 100mL of the suspension is the solid phase concentration in the suspension. 4.4.5 The temperature of the suspension is measured by inserting an industrial temperature gauge with a range of 100°C into the suspension for 5 minutes, and the scale value is the suspension temperature.
4.4.6 The operating pressure is measured by a pressure gauge with a precision of 1.5. HG2102-91
4.4.7 The rotor speed is measured by a tachometer with a precision of 0.5. 4.4.8 The blowing pressure is measured by a pressure gauge with a precision of 1.5. 4.4.9 The amount of washing water is measured by counting with a rotary vane water meter with a precision of 2, and the daily water consumption (kg) is measured. The ratio of this value to the daily output of soda ash (t) is the amount of washing water.
4.4.10 The filtration intensity of soda ash is calculated as follows: filtration intensity of soda ash (1/h·m\)
Daily output of soda ash per machine (t)
24 (h) × filtering area per machine (m2)
4.4.11 The water content of heavy alkali after filtration is calculated according to the provisions of Appendix B. 4.4.12 The solid content of mother liquor is determined by taking mother liquor from the pipette and following the simplified method specified in Article 4.4.4. 5 Inspection rules
The quality inspection of alkali filter is divided into factory inspection and type inspection. 5.1 Factory inspection
Each alkali filter shall be inspected at the factory and can only be shipped after passing the inspection. The items of factory inspection shall include: a. 3.8.1, 3.8.2 and 3.8.3 of the sealing requirements in Article 3.8; b. 3.7 Machinery plus;
, c.3.9 Assembly requirements of 3.9.6, 3.9.7, 3.9.8; d. 3.10.2 Noise measurement of alkali filter during idling; e. 3.11 Painting;
3.12 Idle running test requirements.
5.2 Type inspection
Type inspection of alkali filter is carried out at the installation site 5.2.2 Type inspection should be carried out in one of the following situations a.
Trial production and identification of new products or old products transferred to the factory; after formal production, when major changes are made to the product structure; when the national quality supervision agency proposes a type inspection requirement; d.
Products produced in batches should be inspected periodically. 5.2.3 Type inspection includes not only the contents of factory inspection, but also 3.2.1 d, c, 3.8.4 and 3.13. 5.2.4
Type inspection shall be carried out in accordance with the provisions of 4.1, 4.2 and 4.4. 6 Quality assurance
If the user complies with the storage and use rules, within one year from the date of shipment from the manufacturer, if the product is damaged or fails to work properly due to material deficiency and poor manufacturing, the manufacturer shall provide free The average trouble-free time is 8000h.
7 Marking, packaging, transportation and storage
7.1 The alkali filter should have a product label fixed in an obvious and appropriate position. The type and size of the label should comply with the provisions of JB8. The label should indicate the following:
Model, name;
Main technical parameters of the product (filtration area, drum speed, drum diameter): c.
Manufacturer Name or trademark;
Factory number;
e. Year and month of manufacture.
HG2102-91
7.2 The alkali filter can be packed and shipped as a whole or in parts, depending on its size or complexity. When packing, each part should have assembly marks. The packaging quality should comply with the provisions of JB2759
7.3 When unpacking, it is not allowed to tie the product rope on the outer cylindrical filter abalone of the drum. The packaging symbols used on the packaging box should comply with GB 191.
The technical documents supplied with the machine are as follows:
Product packing list;
Product certificate;
Instruction manual;
List of spare parts and accessories;
Installation diagram:
Related technical data,
7.5 The alkali filter should be protected from collision and damage during transportation and storage. The drum and the distribution head should be strictly prohibited from collision and extrusion. 7.6
When storing, it should be relatively A place where the humidity is not more than 80% and the temperature is not more than 40℃. HG210291
Determination of the sieving method of the sieving method of the sieving method
(Supplement)
1 This appendix specifies the measuring instrument and method of the sieving method of the sieving method. This appendix is only applicable to the determination of the sieving method of the sieving method. 2 Testing instruments
General experimental air instruments A set of copper wire standard sieves with apertures of 300, 250, 175, 138, 115, 91, 65, 53m ( Attached with sieve cover and sieve bottom plate).
A3 Determination method
Fix the sieves in order of aperture size, weigh 25g (accurate to 0.1g) of the heavy alkali sample after simmering at 60±2℃ for 2h and cooling to room temperature. Place it on a sieve with an aperture of 300um and cover the sieve cover. Put it in a standard test vibrating sieve machine and vibrate for 3min (or manually vibrate for 5min).
A4 Determination results
The aperture value of each type of sieve is the corresponding heavy alkali particle size Appendix B
Calculation method of water content in heavy alkali
(Supplement)
B This appendix specifies the calculation method of water content in heavy alkali. This appendix is only applicable to the calculation of water content in heavy alkali in soda ash production. B2 Reference standards
GB2368 Determination of total alkali content in industrial sodium carbonate - Volumetric method GB2369.1 Determination of oxide content in industrial sodium carbonate - Mercury volumetric method B3 Terminology
Total alkali content: NaHCONa, CONH, HCO , the content is called total amount, B4 calculation principle and formula
Calculate according to the results of the determination of heavy alkali composition
Water (%) = 100% = (NHHCO,% + NaHCO,% + NaCl%) Total amount
B5 calculation results
Total alkali content is measured according to the provisions of GB2368, and NaCl (%) is measured according to the provisions of GB2369.1. Substitute it into the calculation formula of B4, and the alkali moisture content is obtained (accurate to 0.1).
Water (%) = 100%-total alkali content%-NauC1%Additional instructions:
This standard is proposed by China Chemical Equipment Corporation, HG2102
This standard is under the jurisdiction of the Chemical Industry Ministry's Chemical Machinery Equipment Standardization Technical Management Unit (Chemical Industry Ministry Chemical Machinery Research Institute). This standard was drafted by Sichuan Chemical Machinery Factory and Jinxi Chemical Machinery Factory participated in the drafting. The main persons in charge of this standard are Fu Xueru and Li Mingrong. This standard refers to the Soviet national standard rOCT5748-79 "Technical conditions for rotary drum vacuum filter with external filter surface" (the second revised version in 1985).
Chinese People's Chemical Industry Standards
External filter surface rotary drum vacuum alkali filter
HG2102-91
Editorial Department of Chemical Industry (Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printing. Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
4Number of words 12000
Format 880×12301/16Printing sheets 34
July 1992 Edition July 1992 First printing
Number of prints 13002 Type inspection
The type inspection of the alkali filter shall be carried out at the installation site. 5.2.2 Type inspection shall be carried out in any of the following situations: a.
Trial production and identification of new products or old products for transfer to factory production; when major modifications are made to the product structure after formal production; when the national quality supervision agency proposes a type inspection requirement; d.
Batch-produced products shall be inspected periodically. 5.2.3 In addition to the contents of factory inspection, type inspection also includes d, c, 3.8.4 and 3.13 of Article 3.2.1. 5.2.4
The method of type inspection shall be carried out in accordance with the provisions of Articles 4.1, 4.2 and 4.4. 6 Quality assurance
Under the condition that the user abides by the storage and use rules, within one year from the date of shipment from the manufacturer, if the product is damaged or fails to work properly due to material deficiency and poor manufacturing, the manufacturer shall provide the user with a free replacement warranty. The average trouble-free time is 8000h.
7 Marking, packaging, transportation and storage
7.1 The alkali filter should have a product label fixed in an obvious and appropriate position. The type and size of the label should comply with the provisions of JB8. The label should indicate the following:
Model, name;
Main technical parameters of the product (filtration area, drum speed, drum diameter): c.
Manufacturer Name or trademark;
Factory number;
e. Year and month of manufacture.
HG2102-91
7.2 The alkali filter can be packed and shipped as a whole or in parts, depending on its size or complexity. When packing, each part should have assembly marks. The packaging quality should comply with the provisions of JB2759
7.3 When unpacking, it is not allowed to tie the product rope on the outer cylindrical filter abalone of the drum. The packaging symbols used on the packaging box should comply with GB 191.
The technical documents supplied with the machine are as follows:
Product packing list;
Product certificate;
Instruction manual;
List of spare parts and accessories;
Installation diagram:
Related technical data,
7.5 The alkali filter should be protected from collision and damage during transportation and storage. The drum and the distribution head should be strictly prohibited from collision and extrusion. 7.6
When storing, it should be relatively A place where the humidity is not more than 80% and the temperature is not more than 40℃. HG210291
Determination of the sieving method of the sieving method of the sieving method
(Supplement)
1 This appendix specifies the measuring instrument and method of the sieving method of the sieving method. This appendix is only applicable to the determination of the sieving method of the sieving method. 2 Testing instruments
General experimental air instruments A set of copper wire standard sieves with apertures of 300, 250, 175, 138, 115, 91, 65, 53m ( Attached with sieve cover and sieve bottom plate).
A3 Determination method
Fix the sieves in order of aperture size, weigh 25g (accurate to 0.1g) of the heavy alkali sample after simmering at 60±2℃ for 2h and cooling to room temperature. Place it on a sieve with an aperture of 300um and cover the sieve cover. Put it in a standard test vibrating machine and vibrate for 3min (or manually vibrate for 5min).
A4 Determination results
The aperture value of each type of sieve is the corresponding heavy alkali particle size Appendix B
Calculation method of water content in heavy alkali
(Supplement)
B This appendix specifies the calculation method of water content in heavy alkali. This appendix is only applicable to the calculation of water content in heavy alkali in soda ash production. B2 Reference standards
GB2368 Determination of total alkali content in industrial sodium carbonate - Volumetric method GB2369.1 Determination of oxide content in industrial sodium carbonate - Mercury volumetric method B3 Terminology
Total alkali content: NaHCONa, CONH, HCO , the content is called total amount, B4 calculation principle and formula
Calculate according to the results of the determination of heavy alkali composition
Water (%) = 100% = (NHHCO,% + NaHCO,% + NaCl%) Total amount
B5 calculation results
Total alkali content is measured according to the provisions of GB2368, and NaCl (%) is measured according to the provisions of GB2369.1. Substitute it into the calculation formula of B4, and the alkali moisture content is obtained (accurate to 0.1).
Water (%) = 100%-total alkali content%-NauC1%Additional instructions:
This standard is proposed by China Chemical Equipment Corporation, HG2102
This standard is under the jurisdiction of the Chemical Industry Ministry's Chemical Machinery Equipment Standardization Technical Management Unit (Chemical Industry Ministry Chemical Machinery Research Institute). This standard was drafted by Sichuan Chemical Machinery Factory and Jinxi Chemical Machinery Factory participated in the drafting. The main persons in charge of this standard are Fu Xueru and Li Mingrong. This standard refers to the Soviet national standard rOCT5748-79 "Technical conditions for rotary drum vacuum filter with external filter surface" (the second revised version in 1985).
Chinese People's Chemical Industry Standards
External filter surface rotary drum vacuum alkali filter
HG2102-91
Editorial Department of Chemical Industry (Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printing. Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
4Number of words 12000
Format 880×12301/16Printing sheets 34
July 1992 Edition July 1992 First printing
Number of prints 13002 Type inspection
The type inspection of the alkali filter shall be carried out at the installation site. 5.2.2 Type inspection shall be carried out in any of the following situations: a.
Trial production and identification of new products or old products for transfer to factory production; when major modifications are made to the product structure after formal production; when the national quality supervision agency proposes a type inspection requirement; d.
Batch-produced products shall be inspected periodically. 5.2.3 In addition to the contents of factory inspection, type inspection also includes d, c, 3.8.4 and 3.13 of Article 3.2.1. 5.2.4
The method of type inspection shall be carried out in accordance with the provisions of Articles 4.1, 4.2 and 4.4. 6 Quality assurance
Under the condition that the user abides by the storage and use rules, within one year from the date of shipment from the manufacturer, if the product is damaged or fails to work properly due to material deficiency and poor manufacturing, the manufacturer shall provide the user with a free replacement warranty. The average trouble-free time is 8000h.
7 Marking, packaging, transportation and storagewww.bzxz.net
7.1 The alkali filter should have a product label fixed in an obvious and appropriate position. The type and size of the label should comply with the provisions of JB8. The label should indicate the following:
Model, name;
Main technical parameters of the product (filtration area, drum speed, drum diameter): c.
Manufacturer Name or trademark;
Factory number;
e. Year and month of manufacture.
HG2102-91
7.2 The alkali filter can be packed and shipped as a whole or in parts, depending on its size or complexity. When packing, each part should have assembly marks. The packaging quality should comply with the provisions of JB2759
7.3 When unpacking, it is not allowed to tie the product rope on the outer cylindrical filter abalone of the drum. The packaging symbols used on the packaging box should comply with GB 191.
The technical documents supplied with the machine are as follows:
Product packing list;
Product certificate;
Instruction manual;
List of spare parts and accessories;
Installation diagram:
Related technical data,
7.5 The alkali filter should be protected from collision and damage during transportation and storage. The drum and the distribution head should be strictly prohibited from collision and extrusion. 7.6
When storing, it should be relatively A place where the humidity is not more than 80% and the temperature is not more than 40℃. HG210291
Determination of heavy alkali particle size by sieving
(Supplement)
1 This appendix specifies the measuring instrument and method of heavy alkali particle size. This appendix is only applicable to the determination of heavy alkali particle size. 2 Testing instruments
General experimental air instrument with a set of copper wire standard sieves with apertures of 300, 250, 175, 138, 115, 91, 65, 53m ( Attached with sieve cover and sieve bottom plate).
A3 Determination method
Fix the sieves in order of aperture size, weigh 25g (accurate to 0.1g) of the heavy alkali sample after simmering at 60±2℃ for 2h and cooling to room temperature. Place it on a sieve with an aperture of 300um and cover the sieve cover. Put it in a standard test vibrating machine and vibrate for 3min (or manually vibrate for 5min).
A4 Determination results
The aperture value of each type of sieve is the corresponding heavy alkali particle size Appendix B
Calculation method of water content in heavy alkali
(Supplement)
B This appendix specifies the calculation method of water content in heavy alkali. This appendix is only applicable to the calculation of water content in heavy alkali in soda ash production. B2 Reference standards
GB2368 Determination of total alkali content in industrial sodium carbonate - Volumetric method GB2369.1 Determination of oxide content in industrial sodium carbonate - Mercury volumetric method B3 Terminology
Total alkali content: NaHCONa, CONH, HCO , the content is called total amount, B4 calculation principle and formula
Calculate according to the results of the determination of heavy alkali composition
Water (%) = 100% = (NHHCO,% + NaHCO,% + NaCl%) Total amount
B5 calculation results
Total alkali content is measured according to the provisions of GB2368, and NaCl (%) is measured according to the provisions of GB2369.1. Substitute it into the calculation formula of B4, and the alkali moisture content is obtained (accurate to 0.1).
Water (%) = 100%-total alkali content%-NauC1%Additional instructions:
This standard is proposed by China Chemical Equipment Corporation, HG2102
This standard is under the jurisdiction of the Chemical Industry Ministry's Chemical Machinery Equipment Standardization Technical Management Unit (Chemical Industry Ministry Chemical Machinery Research Institute). This standard was drafted by Sichuan Chemical Machinery Factory and Jinxi Chemical Machinery Factory participated in the drafting. The main persons in charge of this standard are Fu Xueru and Li Mingrong. This standard refers to the Soviet national standard rOCT5748-79 "Technical conditions for rotary drum vacuum filter with external filter surface" (the second revised version in 1985).
Chinese People's Chemical Industry Standards
External filter surface rotary drum vacuum alkali filter
HG2102-91
Editorial Department of Chemical Industry (Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printing. Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
4Number of words 12000
Format 880×12301/16Printing sheets 34
July 1992 Edition July 1992 First printing
Number of prints 1300
A4 Determination results
The aperture value of each type of sieve is the corresponding heavy alkali particle size Appendix B
Calculation method of heavy alkali moisture content
(Supplement)
B This appendix specifies the calculation method of heavy alkali moisture content. This appendix is only applicable to the calculation of heavy alkali content in soda ash production. B2 Reference standards·
GB2368 Determination of total alkali content in industrial sodium carbonate Volumetric method GB2369.1 Determination of oxide content in industrial sodium carbonate Mercury volumetric method B3 Terminology
Total Alkali content: NaHCONa, CONH, HCO, the sum of the contents is called total alkali content, B4 calculation principle and formula
Calculate according to the results of the determination of heavy alkali composition
Water content (%) = 100% = (NHHCO,% + NaHCO,% + NaCl%) Total
B5 calculation results
The total alkali content is measured according to the provisions of GB2368, and NaCl (%) is measured according to the provisions of GB2369.1. Substitute it into the calculation formula of B4, and the alkali moisture content (accurate to 0.1) is obtained.
Water content (%) = 100% - total alkali content % - NauC1% Additional notes:
This standard is proposed by China National Chemical Equipment Corporation, HG2102
This standard is under the jurisdiction of the Chemical Industry Ministry's Chemical Machinery Equipment Standardization Technical Management Unit (Chemical Industry Ministry Chemical Machinery Research Institute). This standard was drafted by Sichuan Chemical Machinery Factory as the main sponsor and Jinxi Chemical Machinery Factory participated in the drafting. The main persons in charge of this standard are Fu Xueru and Li Mingrong. This standard adopts the Soviet national standard OC T5748-79 "Technical Conditions for External Filter Surface Drum Vacuum Filter" (the second revised version in 1985) with reference to it.
People's Republic of China
Chemical Industry Standard
External Filter Surface Drum Vacuum Alkali Filter
HG2102-91
Editorial Office of Chemical Industry Standardization Institute
Postal Code: 100013
Printing. Ministry of Chemical Industry Standardization Institute
Copyright reserved. No reproduction allowed
4Number of words: 12000
Format: 880×12301/16Printing sheets: 34
Edition: July 1992, first edition, July 1992, first printing
Number of copies: 1300
A4 Determination results
The aperture value of each type of sieve is the corresponding heavy alkali particle size Appendix B
Calculation method of heavy alkali moisture content
(Supplement)
B This appendix specifies the calculation method of heavy alkali moisture content. This appendix is only applicable to the calculation of heavy alkali content in soda ash production. B2 Reference standards·
GB2368 Determination of total alkali content in industrial sodium carbonate Volumetric method GB2369.1 Determination of oxide content in industrial sodium carbonate Mercury volumetric method B3 Terminology
Total Alkali content: NaHCONa, CONH, HCO, the sum of the contents is called total alkali content, B4 calculation principle and formula
Calculate according to the results of the determination of heavy alkali composition
Water content (%) = 100% = (NHHCO,% + NaHCO,% + NaCl%) Total
B5 calculation results
The total alkali content is measured according to the provisions of GB2368, and NaCl (%) is measured according to the provisions of GB2369.1. Substitute it into the calculation formula of B4, and the alkali moisture content (accurate to 0.1) is obtained.
Water content (%) = 100% - total alkali content % - NauC1% Additional notes:
This standard is proposed by China National Chemical Equipment Corporation, HG2102
This standard is under the jurisdiction of the Chemical Industry Ministry's Chemical Machinery Equipment Standardization Technical Management Unit (Chemical Industry Ministry Chemical Machinery Research Institute). This standard was drafted by Sichuan Chemical Machinery Factory as the main sponsor and Jinxi Chemical Machinery Factory participated in the drafting. The main persons in charge of this standard are Fu Xueru and Li Mingrong. This standard adopts the Soviet national standard OC T5748-79 "Technical Conditions for External Filter Surface Drum Vacuum Filter" (the second revised version in 1985) with reference to it.
People's Republic of China
Chemical Industry Standard
External Filter Surface Drum Vacuum Alkali Filter
HG2102-91
Editorial Office of Chemical Industry Standardization Institute
Postal Code: 100013
Printing. Ministry of Chemical Industry Standardization Institute
Copyright reserved. No reproduction allowed
4Number of words: 12000
Format: 880×12301/16Printing sheets: 34
Edition: July 1992, first edition, July 1992, first printing
Number of copies: 1300
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