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Chemical Industry Standard of the People's Republic of Chinawww.bzxz.net
S109 Vanadium Catalyst for Sulfuric Acid Production
Subject Content and Scope of Application
HG2507-93
This standard specifies the technical requirements, test methods, inspection rules and packaging, marking, transportation and storage requirements of S109-1 and S109-2 vanadium catalysts for sulfuric acid production (hereinafter referred to as S109 vanadium catalysts). This standard applies to S109 vanadium catalysts used to oxidize sulfur dioxide to sulfur trioxide in the contact sulfuric acid production process. 2 Reference Standards
GB191 Pictorial Marking for Packaging, Storage and Transportation
HG/T2089 Test Methods for Vanadium Catalysts for Sulfuric Acid Production HG/T2516 Chemical Composition Analysis Methods for Vanadium Catalysts for Sulfuric Acid Production 3 Technical Requirements
Main Physical Properties and Chemical Components
S The main physical properties and chemical components of 109 type vanadium catalyst are listed in Table 1. Table
Physical properties
Chemical components
Diameter, mm
Length, mm
Density, g/L
Vanadium pentoxide (V,O), %
Potassium sulfate (K,SO,), %
Sb,O,), %
Phosphorus pentoxide (P20,), %
Promoter, %
Loss on ignition (800℃, 1.5h), %
3.2 Technical indicators
Approved by the Ministry of Chemical Industry of the People's Republic of China on September 9, 1993 S 109-1
Yellow, brownish yellow
21. 1~24. B
0. 7~1. 5
2. 5~ 3. 5
Cylindrical strip
0. 7~0. 8
S109-2
Yellow, grayish yellow
17.9~20.9
2. 0~6. 0
1994-07-01implemented
HG 2507 -- 93
Under the test methods and inspection rules specified in this standard, the quality of S109 vanadium catalyst must meet the technical indicators listed in Table 2.
1440℃
Activity (after heat resistance, SO, conversion rate), %
Average value, N/cm
Radial crushing resistance of finished particles
Percentage of particles with strength lower than 40N/cm, %Abrasion rate. %
Vanadium pentoxide (V,O,), %
4Test method
$109-1
S109-2
4.1Activity of S109 type vanadium catalyst. The tests of crushing strength and abrasion rate between particle sizes are carried out in accordance with HG/T2089 except for the test conditions of activity and the length of the sample for crushing strength between particle sizes. 4.2 Chemical component analysis is carried out in accordance with the analysis method of HG/T2516. a. Activity test conditions
Catalyst loading: 30mL;
Catalyst strip length: 6.0~6.5mm;
Space velocity: 36×10*h-\;
Volume percentage of sulfur dioxide in intake air: (10±0.1)%, the rest is air; System pressure: normal pressure;
Activity test temperature: 440㎡, 485;
Heat resistance temperature: 650c:
Heat resistance time: 5h.
b. Particle radial crushing strength
Test sample length (after grinding at both ends): 6~7mm.5 Inspection rules
5.1 S109 vanadium catalyst shall be inspected by the quality supervision and inspection department of the manufacturer. Products shall not be shipped without passing the inspection. 5.2 Products shall be inspected in batches, and each batch shall not exceed 20t. The manufacturer shall ensure that all shipped products meet the requirements of this standard. 5.3 The samples for product inspection shall be randomly sampled by a dedicated person from the quality inspection department. The number of barrels for each batch of products shall be three times the cube root of the total number of barrels of the batch of products, that is, 3×VN (N is the total number of barrels). If there is a decimal, it shall be rounded up to an integer, and shall not be less than 10 barrels. Take about 3L of sample from the opened barrel, mix it thoroughly and evenly, and divide it into laboratory sample, test sample and reserved sample by reduction method, and put them into sample bottles, seal them, and affix labels, indicating product name, model, batch number, representative quantity, sampling month, sampling person, etc. The reserved sample needs to be kept for one year for inspection. 5.4 The technical requirements and indicators listed in this standard are all type inspection items. Among them, the technical indicators listed in Table 2 are factory inspection items. Under normal production conditions, type inspection should be carried out at least once every six months. HIG 2507 - 93
55 If the product fails the inspection, the inspection device, instrument, meter, chemical reagent, etc. should be calibrated and re-inspected. If it still fails, it is allowed to re-sample and inspect according to Article 5.3. If it still fails, the batch of products will be judged as unqualified products and shall not be shipped. 5.6 When there is a dispute between the supplier and the buyer regarding the product quality, the buyer has the right to re-test according to the test methods and inspection rules specified in the standard, or to ask the relevant parties to arbitrate.
5.7 The test results of this standard are compared with the values specified in the standard after revision to determine whether the test results are qualified. 6 Packaging, marking, storage and transportation
6.1: S109 vanadium catalyst products should be packed in airtight round iron drums lined with plastic bags. The volume of the drum should not exceed 50L. Pay attention to sealing when packaging, and attach a product quality certificate. The content of the certificate shall include: model, name, batch number, production date, manufacturer name, and the content that meets the quality index of this standard after inspection. 6.2 The packaging barrel shall be yellow and have obvious and firm marks, including: catalyst model, name, batch number, weight (Kg), trademark, manufacturer name, and conspicuously marked with "afraid of moisture" and "no rolling" signs specified in GB191. 6.3 The packaged products shall be stored in a dry warehouse to prevent pollution and moisture. 6.4 During transportation and loading and unloading, it is strictly forbidden to drop, roll and collide to avoid damage to the catalyst particles. Rainproof facilities shall be provided during transportation to prevent the catalyst from getting wet
Additional Notes:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China, and this standard was issued by the Nanjing Chemical Industry (Group) Corporation Research Institute. This standard was drafted by the Nanjing Chemical Industry (Group) Corporation Research Institute, and the main drafters of this standard are Shen Xingnan. Chen Yueqin and Zhang Ling.
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