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Method for preparing clean CO sulfur tolerant shift catalyst

A sulfur-resistant transformation and catalyst technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low strength stability, poor hydration resistance, short service life, etc., and achieve high activity Good stability, solving pollution problems, and low loss rate of active components

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these technologies also use clean raw materials for catalyst preparation, the carrier is basically γ-Al 2 o 3 Type, poor hydration resistance, low strength stability, short service life, can only be used in limited process conditions, low promotion and application value

Method used

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  • Method for preparing clean CO sulfur tolerant shift catalyst
  • Method for preparing clean CO sulfur tolerant shift catalyst
  • Method for preparing clean CO sulfur tolerant shift catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First, dissolve 300g of magnesium acetate in 500ml of deionized water and 80g of Al 2 o 3Fully mix with 25g of metatitanic acid, dry, and roast at 500°C for 4 hours; grind the roasted material (basic material A, the same as other examples) through a 200-mesh sieve, and get 100g of powder (basic material A, other Embodiment is the same), 170g Al (OH) 3 , 30gMgO, 15g metatitanic acid were mixed, and a solution made of 8g acetic acid and 150ml deionized water was added for kneading and molding. After natural drying, it was calcined at 550°C for 3 hours to obtain a catalyst carrier.

[0035] Take 100g of the carrier, mix 15g of ammonium molybdate, 8.0g of cobalt acetate, 6.0g of potassium carbonate and 50ml of deionized water to form a co-impregnation solution, impregnate equal volumes of the impregnation solution, dry at 120°C, and decompose at 500°C to obtain Finished catalyst (catalyst number is C-1), its strength and its strength stability are shown in Table 1.

Embodiment 2

[0037] First, dissolve 300g of magnesium acetate in 500ml of deionized water, fully mix with 110g of pseudoboehmite and 20g of zinc oxide, dry them, and roast them at 550°C for 4 hours, crush the roasted materials through a 200-mesh sieve, and take 100g of powder , 200g

[0038] Al 2 o 3 , 30gMgO, 10g titanium oxide were mixed, and a solution made of 8g citric acid and 150ml deionized water was added for kneading and molding, and after natural drying, it was calcined at 550°C for 3 hours to obtain a catalyst carrier.

[0039] Take 100g of the carrier, mix 15g of ammonium molybdate, 8.0g of cobalt acetate, 5.0g of potassium hydroxide and 50ml of deionized water to form a co-impregnation solution, impregnate equal volumes of the impregnation solution, dry at 120°C, and decompose at 500°C The finished catalyst (the catalyst number is C-2) is obtained, and its strength and strength stability are shown in Table 1.

Embodiment 3

[0041] First, dissolve 300g of magnesium acetate in 500ml of deionized water, fully mix with 110g of pseudoboehmite and 20g of titanium oxide, dry it, and roast it at 500°C for 4 hours, crush the roasted material through a 200-mesh sieve, and take 100g of powder , 200gAl 2 o 3 , 35g of magnesium hydroxide, 10g of titanium oxide were mixed, adding a solution made of 5g of citric acid, 5g of oxalic acid and 160ml of deionized water, kneaded, shaped and roasted at 550°C for 3 hours to obtain a catalyst carrier.

[0042] Take 100g of the carrier, make 15g of ammonium molybdate, 10.0g of cobalt oxalate, 5.0g of potassium hydroxide and 50ml of deionized water to form a co-immersion solution, impregnate equal volumes of the immersion solution, dry at 120°C, and decompose at 500°C The finished catalyst (the catalyst number is C-3) is obtained, and its strength and strength stability are shown in Table 1.

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Abstract

The invention provides a method for preparing a clean CO sulfur tolerant shift catalyst. The mode of adding active ingredients and an alkali metal aid is optimized, the active ingredients are high in dispersibility on the surface of a carrier and difficult to lose, and the catalyst is prepared by an immersion method and also can be directly prepared by a kneading method. The preparation method issimple and practicable; and the prepared clean CO sulfur tolerant shift catalyst has higher strength, strength stability and structural stability; the wastage rate of the active ingredients is low, the activity stability is high, the catalyst has high capacity of resisting poisonous substances such as carbonyl iron, and the physicochemical properties meet industrial requirement. In the process ofpreparing the catalyst, pollutant gases such as nitric oxides are not generated, and the cleanliness and environmental friendliness are achieved.

Description

technical field [0001] The invention relates to a preparation method of a clean CO sulfur-resistant shift catalyst used for the shift reaction between sulfur-containing CO gas and water vapor. Background technique [0002] Restricted by oil and natural gas resources, most nitrogen fertilizer plants, methanol plants, and coal chemical plants in my country use coal or residual oil as raw materials, pressurized gasification to produce gas, and then follow the process route of carbon monoxide sulfur-resistant transformation, all of which use sulfur-resistant Change catalyst. According to the different operating pressures of the transformation system, the sulfur-resistant transformation process in my country can be roughly divided into several different technological processes: high pressure (>6.0MPa), medium pressure (2.0-5.0MPa), and low pressure (<2.0MPa). Among them, the medium-pressure sulfur-resistant transformation process is the most complicated. There are advanced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J37/02B01J37/04C01B3/48C01B3/16
CPCY02P20/52
Inventor 白志敏余汉涛田兆明齐焕东陈依屏郭建学李文柱郭杰
Owner CHINA PETROLEUM & CHEM CORP
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