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High voltage sulphur resistant translation catalyst of CO and preparation method thereof

A sulfur-resistant conversion and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of alkali metal loss and achieve low activation temperature , a wide range of conditions, and high retention rates

Active Publication Date: 2008-12-10
青岛联信催化材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalytic strength, strength stability and anti-separation ability of the sulfur-tolerant shift catalyst disclosed in this patent have been improved, but the loss of alkali metal still exists under conditions such as high pressure and high temperature.
[0005] Patent application CN200410005731.1 discloses a carbon monoxide Co-Mo shift catalyst, except containing alkali metal coagents, has also introduced rare earth elements and zirconium (Zr) coagents, and this catalyst is only applicable to low pressure (0.3~3Mpa ) and conversion reactions of CO at low water / gas molar ratios (0.2-0.6)

Method used

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  • High voltage sulphur resistant translation catalyst of CO and preparation method thereof
  • High voltage sulphur resistant translation catalyst of CO and preparation method thereof
  • High voltage sulphur resistant translation catalyst of CO and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 11g of potassium feldspar was crushed and mixed with 71g of pseudoboehmite and 27g of MgO·Al 2 o 3 Mix evenly, make powdery mixture, above-mentioned mixture is added the mixing solution that is made into by 6g ammonium molybdate and 3.5g cobalt nitrate and mixes beating, and its gained slurry is dried at 400 ℃ so that moisture content reaches 8%, obtains Semi-finished product: after the semi-finished product is pulverized, add 3g of field grass powder and mix evenly, then add 100ml of 10% nitric acid solution, knead it, extrude it, and roast the strip at 500°C for 3 hours to obtain the finished catalyst. The sample number is: Qkhj-01.

Embodiment 2

[0054] 28g potassium feldspar was crushed and mixed with 62g Al(OH) 3 and 18g MgO Al 2 o 3 Mix evenly, make powdery mixture, above-mentioned mixture adds the mixed solution that is made into by 6g ammonium molybdate and 4.6g cobalt nitrate and mixes beating, and its gained slurry is dried at 600 ℃ so that moisture content reaches 4%, obtains Semi-finished product: crush the semi-finished product, add 4g of methyl methacrylate and mix evenly, add 8g of magnesium nitrate solution, knead it, extrude it, and roast the strip at 400°C for 5 hours to obtain the finished catalyst. The sample number is: Qkhj-02.

Embodiment 3

[0056] 11g of kalephine was crushed and mixed with 95g of MgO·Al 2 o 3 Mix evenly to obtain a powdery mixture, which is added to a mixed solution made of 4.2g ammonium molybdate and 3.5g cobalt nitrate for mixing and beating, and the resulting slurry is dried at 170°C so that the moisture content reaches 15%. Obtain a semi-finished product; after the semi-finished product is pulverized, add 3g of grass powder and 1.3g of citric acid and mix evenly, then add 82ml of 20% nitric acid solution, knead it, extrude it, and roast the strip at 300°C for 6 hours That is, the finished catalyst is obtained. The sample number is: Qkhj-03.

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Abstract

The invention discloses a carbon monoxide high pressure sulfur-tolerant shift catalyst, comprising a catalyst active component, an alkali metal activated assistant and a carrier, which is characterized in that the alkali metal activated assistant is an alkali metal mineralizer. The alkali metal mineralizer is an albite, a potash feldspar, a sodium nepheline or / and a kalsilite, wherein, the sodium nepheline or / and a kalsilite is preferable. An alkali metal oxide accounts for 0.1 to 15 percent of the total weight of the catalyst. The invention also provides the preparation method of the catalyst. The operation technology is simple and the catalyst can be prepared by kneading, extruding and calcining. The prepared catalyst has low light-off temperature. Under the conditions of high pressure, high temperature and high water-gas ratio, the alkali metal has little drain rate or even no drain and has high strength and strength stability.

Description

technical field [0001] The invention relates to a CO sulfur-tolerant shift catalyst, and more specifically relates to a CO high-pressure sulfur-tolerant shift catalyst and a preparation method thereof. Background technique [0002] In recent years, due to the influence of increasingly tense oil resources, my country's coal chemical industry has entered a period of rapid development, coal gasification ammonia, methanol, gasoline, olefins and other projects have been launched, most of these projects are The process flow containing CO sulfur-tolerant shifting process is selected. Therefore, the market demand for CO sulfur-tolerant shifting catalysts is increasing, and the requirements for the performance of such catalysts are also increasing and more stringent. The products developed in the early stage It has been difficult to meet the new requirements of the catalyst for the new process. Therefore, it is necessary to develop new catalysts according to the new requirements of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J21/16
Inventor 纵秋云刘捷王日杰周春丽
Owner 青岛联信催化材料有限公司
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