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Catalyst for improving organic sulfur hydrolysis rate, its carrier and preparation method

A technology of catalyst and hydrolysis rate, applied in the direction of catalyst carrier, catalytic conversion gas purification of impurities, chemical instruments and methods, etc., can solve the problems affecting product quality, affecting the service life of catalysts in the final desulfurization precision section, catalyst loss of activity, etc., to achieve Increased surface alkalinity, improved low-temperature activity, and enhanced surface alkalinity

Active Publication Date: 2007-04-04
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

A small amount of COS will seriously affect the quality of the product and cause the catalyst to lose its activity, so an effective removal method must be used
Currently used desulfurizers such as iron oxide, activated carbon, and zinc oxide are very effective in removing H 2 S has a high sulfur capacity, but its sulfur capacity is low for the direct removal of COS, and only COS can be hydrolyzed or hydrogenated into H during the conversion process. 2 Only S can be removed. Therefore, the quality of conversion catalysts to convert organic sulfur will directly affect the accuracy of final desulfurization and the service life of catalysts in subsequent sections. Especially in recent years, with the rapid development of coal-based methanol industry The development of organic sulfur puts forward higher requirements for the conversion and removal of organic sulfur (0.05×10 -6 )

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Take KNO 3 50 grams, dissolved in 200 ml of water, added 800 grams of aluminum hydroxide, 30 grams of metatitanic acid, kneaded, dried and roasted at 600 ° C for 3 hours, crushed to 180 mesh, and the alkaline material was obtained for use.

[0047] Take 20 grams of alkaline material, add 1000 grams of pseudo-boehmite, 200 grams of MgO, and 50 grams of scallop powder, mix well, knead and extrude with 30 grams of 10% nitric acid solution, and roast at 500 ° C for 3 hours to prepare the carrier.

[0048] Get 50 grams of carrier, 6 grams of ammonium molybdate, 3.0 grams of cobalt nitrate and 16 grams of potassium carbonate, and use 18% ammonia water to form a co-immersion solution, impregnate the carrier with equal volume of the solution and roast at 400 ° C to obtain a catalyst, wherein cobalt Calculated as CoO, it is 1.0% of the total amount of catalyst, molybdenum is calculated as MoO 3 Calculated as 4.8% of the total amount of catalyst, potassium is expressed as K 2...

Embodiment 2

[0051] MgSO 4 80g, dissolved in 200ml water, add r-AL 2 o 3 800 grams were kneaded, dried and roasted at 800°C for 2.5 hours, crushed to 180 meshes, and the alkaline material was obtained for use.

[0052] Take 100 grams of alkaline material, then add 1000 grams of gibbsite, 200 grams of CaO, and 40 grams of scallop powder, mix well, knead with 10 grams of 10% nitric acid solution, extrude and roast at 500 ° C for 3 hours Prepare the carrier.

[0053] Take 50 grams of carrier, 10 grams of ammonium molybdate, 1 gram of cobalt nitrate and 10 grams of potassium carbonate, and use 29 grams of 18% ammonia water to make a co-immersion solution, impregnate the carrier with equal volume of the solution and roast at 400 ° C to obtain a catalyst , where cobalt is 0.8% of the total amount of the catalyst as CoO, molybdenum as MoO 3 Calculated as 9% of the total amount of catalyst, potassium is expressed as K 2 O is counted as 5% of the total amount of catalyst.

[0054] The prepa...

Embodiment 3

[0056] The preparation method is the same as in Example 1, and the difference is that KNO 3 50 grams replaced by Ca(NO 3 ) 240 grams, the numbering of catalyst is SJB-3, and its performance comparison is as shown in table 1.

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PUM

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Abstract

This invention provides one kind of catalyst which can improve organic sulfur hydrolysis rate.First,organic sulfur hydrolysis additive and carrier material is made into alkaline material through the process of kneading drying roasting and grinding.Then,mixing the carrier material alkaline material and alkali soil material,also adding peptizing agent,the catalyst carrier can be made through the process of kneading extruding strip and roasting.The catalyst carrier cab be made into sulfur tolerant shift catalyst by impregnating active component molybdenum and cobalt either alkali metal.The outstanding advantages of this invention is that enhanceding the surface alkaline of carrier by adding alkali promoter in the carrier material, which not only improve the activities of catalyst to the organic sulfur,but also improve the low temperature activities of the catalyst.The catalyst of this invention can be used in pressure range of 1.0-5.0MPa.

Description

technical field [0001] The invention relates to a shift catalyst capable of improving the hydrolysis function of organic sulfur, its carrier and its preparation method, specifically, a sulfur-resistant shift catalyst capable of improving the hydrolysis function of organic sulfur, its carrier and its preparation method. Background technique [0002] It is well known that the synthesis gas produced from coal contains H 2 S and organic sulfur mainly COS. A small amount of COS will seriously affect the quality of the product and cause the catalyst to lose its activity, so an effective removal method must be selected. Currently used desulfurizers such as iron oxide, activated carbon, and zinc oxide are very effective in removing H 2 S has a high sulfur capacity, but its sulfur capacity is low for the direct removal of COS, and only COS can be hydrolyzed or hydrogenated into H during the conversion process. 2 Only S can be removed. Therefore, the quality of conversion catalysts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J32/00C10K1/34
Inventor 魏海常俊石
Owner 青岛联信催化材料有限公司
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