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Sulfur-tolerant CO converting Co-Mo catalyst and its carrier and prepn

A sulfur-resistant conversion and catalyst technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor catalyst strength and strength stability, low catalyst strength, and poor strength stability, etc., and achieve high strength And strength stability and anti-powdering ability, improve activity and activity stability, improve strength and strength stability

Inactive Publication Date: 2004-11-24
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

Due to the congenital deficiencies of its preparation process, the carrier and catalyst produced by the roll forming method not only have poor strength and strength stability, but also are prone to surface peeling, powder falling and agglomeration, which increases the bed resistance and affects the normal industrial production. conduct
The catalyst prepared in this way can be used in a low pressure (less than 1.0Mpa) flow process, if used in a higher pressure flow process, the strength of the catalyst is low and the strength stability is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Take AL 2 (OH) 3 120 grams, 150 grams of pseudo-boehmite, 20 grams of iron sulfide, and 6 grams of Tianqing powder were mixed evenly, kneaded with 8 grams of 3% citric acid solution, extruded and roasted at 500 ° C for 4 hours to obtain a carrier.

[0059] Take 50 grams of carrier, dissolve 6 grams of ammonium molybdate, 3.0 grams of cobalt nitrate and 16 grams of potassium carbonate with 18% ammonia water to form a co-immersion solution, impregnate the carrier with equal volume of the solution and roast at 400 ° C for 5 hours to prepare The catalyst was obtained, wherein cobalt was 1.0% of the total amount of the catalyst as CoO, and molybdenum was calculated as MoO 3 Calculated as 5% of the total amount of catalyst, potassium is expressed as K 2 O is counted as 13% of the total amount of catalyst.

[0060] The number of the prepared catalyst is C-1, and the evaluation data of its strength and activity are shown in Table 1 and Table 2.

Embodiment 2

[0062] Take 150 grams of pseudo-boehmite and 10 grams of molybdenum sulfide, mix evenly, knead with 13 grams of 3% citric acid solution, extrude and roast at 600° C. for 3 hours to obtain a carrier.

[0063] Take 50 grams of carrier, mix 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 500 ° C for 4 hours. The catalyst is obtained, wherein cobalt is 0.5% of the total amount of the catalyst as CoO, and molybdenum is calculated as MoO 3 Calculated as 10% of the total amount of catalyst, potassium is expressed as K 2 O is counted as 6% of the total amount of catalyst.

[0064] The number of the prepared catalyst is C-2, and the evaluation data of its strength and activity are shown in Table 1 and Table 2.

Embodiment 3

[0066] r-AL 2 o 3 80 grams, 150 grams of pseudo-boehmite, 20 grams of iron sulfide, 6 grams of Tianqing powder, 20 grams of manganese dioxide, mix well, knead with 10 grams of 1% nitric acid solution, extrude and roast at 450 ° C for 8 hours to prepare the carrier.

[0067] Get 50 grams of carrier, 12 grams of ammonium molybdate, 5.0 grams of cobalt nitrate and 5 grams of potassium carbonate are dissolved with 18% ammonia water to form a co-immersion solution, and the solution is impregnated with the carrier. The volume ratio of the carrier and the co-immersion solution is 1 : 0.5, and dried at 200°C for 6 hours to obtain a catalyst, wherein cobalt was calculated as CoO as 3.0% of the total amount of the catalyst, and molybdenum was calculated as MoO 3 Calculated as 12% of the total amount of catalyst, potassium is expressed as K 2 O is counted as 3% of the total amount of catalyst.

[0068] The number of the prepared catalyst is C-3, and the evaluation data of its strengt...

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PUM

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Abstract

The Co-Mo catalyst for sulfur-tolerant CO conversion has carrier component comprising one or two of Al2(OH)3, gamm-Al2O3, delta-Al2O3, alpha-Al2O3 or pseudo-thin diasphore; and active component comprising oxide of Co and Mo. The preparation process includes preparing carrier via mixing main carrier material with active assistant, kneading after adding efficient extrusion assistant, extruding into strip and roasting; soaking the carrier inside the soaking liquid containing active components Co, Mo and alkali metal and subsequent drying or roasting. The catalyst of the present invention may be used in the pressure range 1-5 MPa and has strength, strength stability, chalking resistance and conversion activity under different temperature higher than common industrial catalyst.

Description

technical field [0001] The invention relates to a cobalt-molybdenum-based catalyst, its carrier and a preparation method thereof, in particular to a high-strength Co-Mo-based cobalt-molybdenum-based CO sulfur-resistant shift catalyst and an active carrier of the catalyst. technical background [0002] Cobalt-molybdenum-based CO sulfur-tolerant shift catalysts are widely used in the conversion of sulfur-containing feed gas and carbonyl synthesis gas from heavy oil, residual oil and coal due to their excellent shift activity, high shift activity, and no sulfur poisoning. Processes for ammonia synthesis gas, hydrogen and oxo gas. At present, the support of sulfur-tolerant shift catalysts that have been widely used in process equipment is r-AL 2 o 3 , MgAL 2 o 4 Composite carrier. where MgAL 2 o 4 It has good strength and structural stability, and is mostly used in high temperature and high pressure sulfur-resistant conversion processes. [0003] Since MgAL 2 o 4 The p...

Claims

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Application Information

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IPC IPC(8): B01J23/88B01J32/00
Inventor 魏海梁足培
Owner 青岛联信催化材料有限公司
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