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Low-cost sulfur-tolerant shift catalyst and its preparation method

A sulfur-resistant shift and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. In order to achieve the effect of good structure and activity stability, simple process and reduced preparation cost

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patented method consumes a lot of water, it is difficult to treat acid-containing water, and the preparation process is complicated.

Method used

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  • Low-cost sulfur-tolerant shift catalyst and its preparation method
  • Low-cost sulfur-tolerant shift catalyst and its preparation method
  • Low-cost sulfur-tolerant shift catalyst and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The attapulgite clay was first calcined at 800°C for 2 hours, and then crushed through a 160-mesh sieve.

[0039] Dissolve 1.23g of ammonium molybdate in 40.0ml of deionized water to obtain solution A containing molybdenum; dissolve 1.94g of cobalt nitrate in 30.0ml of deionized water, then add 2.87g of manganese nitrate and 6.00g of citric acid into the above solution , stirring and dissolving to obtain solution B containing cobalt, manganese and binder.

[0040] Weigh 97.50g of the treated attapulgite clay and 8.00g of safflower powder and mix evenly, add solution A to the mixture, knead evenly; then add solution B, knead evenly and shape, dry naturally, at 500°C Calcined for 5 hours to obtain the finished sulfur-tolerant shift catalyst C-1. Its strength, pore structure and activity data are shown in Table 1 and Table 2.

Embodiment 2

[0042] The attapulgite clay was first calcined at 760°C for 2.5 hours, and then crushed through a 160-mesh sieve.

[0043] Dissolve 2.08g ammonium molybdate with 40.0ml deionized water to obtain solution A containing molybdenum; dissolve 2.33g cobalt nitrate with 30.0ml deionized water, then add 4.02g manganese nitrate and 4.00g citric acid to the above solution respectively , stirring and dissolving to obtain solution B containing cobalt, manganese and binder.

[0044] Weigh 96.30g of treated attapulgite clay and 4.0g of starch and mix evenly, add solution A to the mixture, knead evenly; then add solution B, knead evenly, shape, dry naturally, and roast at 530°C for 3.5h , to obtain the finished sulfur-tolerant shift catalyst C-2. Its strength, pore structure and activity data are shown in Table 1 and Table 2.

Embodiment 3

[0046] The attapulgite clay was first calcined at 740°C for 3.5 hours, and then crushed through a 160-mesh sieve.

[0047] Dissolve 2.33g of ammonium molybdate in 40.0ml of deionized water to obtain solution A containing molybdenum; dissolve 3.11g of cobalt nitrate in 30.0ml of deionized water, then add 4.60g of manganese nitrate and 3.00g of citric acid into the above solution , stirring and dissolving to obtain solution B containing cobalt, manganese and binder.

[0048] Weigh 95.70g of treated attapulgite clay and 3.00g of starch and mix evenly, add solution A, knead evenly; then add solution B, knead evenly, shape, dry naturally, and roast at 550°C for 2.5h to obtain the finished sulfur resistant Change Catalyst C-3. Its strength, pore structure and activity data are shown in Table 1 and Table 2.

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Abstract

The invention belongs to the technical field of sulfur-tolerant shift, and relates to a low-cost sulfur-tolerant shift catalyst and a preparation method thereof. The catalyst is prepared by performing roasting pretreatment on attapulgite clay for obtaining a carrier, then loading active components such as Mo, Co and Mn, and performing kneading, molding, air drying and roasting. The catalyst comprises the following chemical compositions: in percent by mass, 0.5-1% of CoO, 1-2% of MoO, 1-2% of MnO, and the balance attapulgite clay subjected to roasting pretreatment. According to the technical scheme, the purpose of reducing catalyst production cost is realized, the catalyst is good in stability, has the shit, dust-resisting and position-removing functions, helps to provide a relatively effective utilization approach for wide-source low-cost attapulgite clay, and has good economic benefit and application prospect.

Description

technical field [0001] The invention belongs to the technical field of sulfur-tolerant shifting, and relates to a low-cost sulfur-tolerant shifting catalyst and a preparation method thereof. Background technique [0002] The cobalt-molybdenum-based sulfur-resistant wide-temperature shift catalyst is mainly used to meet the needs of producing raw material gas from heavy raw materials such as heavy oil, residual oil, and coal. °C shows excellent activity, which is equivalent to that of copper-based low-temperature shift catalysts, and its heat resistance is comparable to that of iron-chromium-based high-temperature shift catalysts. Therefore, it has a very wide active temperature range, covering almost the entire active temperature range of the iron-based high-temperature shift catalyst and the copper-based low-temperature shift catalyst. Its most prominent advantage is its strong resistance to sulfur and poison, and it also has the advantages of high strength and long servic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889
Inventor 齐焕东白志敏赵庆鲁王昊姜建波薛红霞
Owner CHINA PETROLEUM & CHEM CORP
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