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Protective agent for sulfur-tolerant shift catalyst and preparation method thereof

A sulfur-resistant conversion and protective agent technology, which is applied in catalyst protection, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of limited protection ability of conversion catalysts, achieve good adsorption and detoxification, large pore volume, high intensity effect

Active Publication Date: 2015-11-18
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is to add active components, and only protect it by adsorption method, which has limited ability to protect the conversion catalyst.

Method used

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  • Protective agent for sulfur-tolerant shift catalyst and preparation method thereof
  • Protective agent for sulfur-tolerant shift catalyst and preparation method thereof
  • Protective agent for sulfur-tolerant shift catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The attapulgite clay was first dried at 150°C for 6 hours, and then crushed through a 180-mesh sieve.

[0048] Weigh 12.08g of copper nitrate and 19.45g of nickel nitrate and dissolve in 45ml of deionized water to obtain solution A; weigh 5.5g of zirconium oxychloride, 1.0g of citric acid and 3.0g of oxalic acid into 20ml of deionized water to obtain solution B.

[0049] Weigh 79g of attapulgite clay, 10.0g of magnesia, 3.0g of turnip powder and mix evenly, add solution A, knead evenly; then add solution B, knead, shape, dry naturally, roast at 530°C for 3h, then cool down naturally to room temperature. That is, the finished bar-shaped sulfur-resistance transforming protective agent C-1 is obtained. Its strength and strength stability are shown in Table 1.

Embodiment 2

[0051] Dry the attapulgite clay at 110°C for 10 hours, and then crush it through a 160-mesh sieve.

[0052] Weigh 4.53g of copper nitrate and 23.34g of nickel nitrate and dissolve them in 45ml of deionized water to obtain solution A; weigh 4.1g of zirconium oxychloride and 3.0g of oxalic acid and add them to 20ml of deionized water to obtain solution B.

[0053] Weigh 76g of attapulgite clay, 15.0g of magnesia, 6.0g of turnip powder and mix evenly, add solution A, knead evenly; then add solution B, knead, shape, dry naturally, roast at 420°C for 4h, then cool down naturally to room temperature. That is to obtain the finished four-leaf clover-shaped sulfur-resistant conversion protective agent C-2. Its strength and strength stability are shown in Table 1.

Embodiment 3

[0055] The attapulgite clay was first dried at 160°C for 8 hours, and then crushed through a 160-mesh sieve.

[0056] Weigh 24.16g of copper nitrate and 7.78g of nickel nitrate and dissolve in 40ml of deionized water to obtain solution A; weigh 3.6g of zinc nitrate and 3.0g of oxalic acid and add them to 20ml of deionized water to obtain solution B.

[0057] Weigh 84g of attapulgite clay, 5.0g of magnesia, 3.0g of turnip powder and mix evenly, add solution A, knead evenly; then add solution B, knead, shape, dry naturally, roast at 500°C for 3h, then cool down naturally to room temperature. That is, the finished bar-shaped sulfur-resistant conversion protective agent C-3 is obtained. Its strength and strength stability are shown in Table 1.

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Abstract

The invention relates to a protective agent for a sulfur tolerant shift catalyst. The protective agent comprises a carrier and an active component, and is characterized in that attapulgite clay is used as a main carrier material and added with a powdered solid compound containing magnesium; and the active component is a binary component containing copper and nickel, and added with an active auxiliary agent, which is one or more selected from zinc oxide, iron oxide, chromium oxide, zirconium oxide and corresponding soluble salts thereof. The invention adopts a kneading method to prepare the protective agent, and employs attapulgite clay with wide source and low cost as the raw material. The protective agent not only has the advantages of simple preparation process and low cost, but also has good adsorption detoxification on toxics such as arsenic (As), hydrocyanic acid and carbonyl compounds in the sulfur tolerant shift catalyst. The protective agent can be used in harsh conditions such as high pressure, high space velocity and high water-air ratio, has strong adsorption capacity on ash and toxics in synthetic gas production from heavy raw materials such as residuum, heavy oil, petroleum coke and coal, and can effectively protect the main shift catalyst and prolong the service life of the main shift catalyst.

Description

technical field [0001] The invention belongs to the technical field of sulfur-tolerant shifting, and in particular relates to a protective agent for a sulfur-tolerant shifting catalyst and a preparation method. 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, comparable to copper-based low-temperature shift catalysts, and its heat resistance is comparable to that of iron-chromium-based high-temperature shift catalysts, so it has a wide active temperature range, covering almost all iron-based high-temperature shift catalysts and copper-based catalysts. The low temperature shifts the entire active temperature range of the catalyst. In recent years, with the rise of crude oil prices, coal chemical industry has been greatly developed, and its gasification process ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J33/00B01J23/755B01J23/80B01J23/86C01B3/16
CPCY02P20/52
Inventor 白志敏余汉涛齐焕东赵庆鲁田兆明王昊姜建波薛红霞
Owner CHINA PETROLEUM & CHEM CORP
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