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Low cost sulfur transformation resistant deoxidizing agent and process for preparing the same

A technology of sulfur-resistant conversion and deoxidizer, which is applied in the petroleum industry, catalytic conversion of impurities, gas purification, combustible gas purification, etc. It can solve the problems of abnormal operation of the device, poor erosion resistance, and rise in bed resistance, and achieve improvement. Strength and strength stability and erosion resistance, high strength and strength stability, and the effect of solving the problem of chalking

Inactive Publication Date: 2003-12-31
QILU PETRO CHEM - SINOPEC
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The current industrial deoxidizers are all based on γ-Al 2 o 3 As a carrier, its strength and strength stability, especially the erosion resistance is poor. During industrial operation, a large amount of dust will be generated, which will cause the bed resistance to rise rapidly and the device cannot operate normally.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 100 grams of pseudo-boehmite, add MgCO 3 10 grams and 3 grams of scallop powder were mixed evenly, kneaded with 10% nitric acid solution, extruded and roasted at 500° C. for 3 hours to obtain a carrier. Get 50 grams of carrier, 6 grams of ammonium molybdate and 3.5 grams of cobalt nitrate are made into a co-impregnation solution, and the equal volume of the solution is impregnated with the carrier, dried and / or roasted to obtain a molybdenum content (calculated as CoO) of 8.6%, and a cobalt content of 8.6%. (in MoO 3 Total) is 1.5% deoxidizer, coded as TYJ-1. The comparison of its deoxidation performance, strength and strength stability is shown in Table 1.

Embodiment 2

[0018] The preparation method is the same as in Example 1, and the difference is that MgCO 3 10 grams replaced by Mg(OH) 2 7 grams, the deoxidizer number is TYJ-2. Its performance comparison is shown in Table 1.

Embodiment 3

[0020] Take Al(OH) 3 70 grams, MgO 10 grams, and then weigh Mg (NO 3 ) 2 40 grams and 3 grams of squat powder are mixed evenly, kneaded with 10% nitric acid solution, extruded and roasted at 580 ° C for 3 hours to obtain a carrier, get 50 grams of carrier, mix 9 grams of ammonium molybdate, and 2.0 grams of cobalt nitrate into a total Immersion solution, impregnating the carrier with equal volume of the solution, drying and / or roasting to obtain molybdenum content (in terms of CoO) is 12.4%, cobalt content (in terms of MoO 3 0.9% deoxidizer, coded as TYJ-3, its performance comparison is shown in Table 1.

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Abstract

The deoxidizing agent has magnesia alumina spinel as carrier, and Co and Mo as active component, where CoO accounts for 0.3-3.0 wt% of the deoxidizing agent and MoO3 3-15 wt%. The deoxidizing agent has deoxidizing rate similar to available industrial deoxidizing agent but obviously raised strength, strength stability and impact corrosion resistance. The present invention solves the powdering problem of deoxidizing agent in some degree.

Description

technical field [0001] The invention relates to a deoxidizer and a preparation method thereof, in particular to a high-strength sulfur-resistant shift deoxidizer and a preparation method thereof. Background technique [0002] As we all know, the raw material gas produced by the "atmospheric fixed bed batch gasification" method contains a small amount of oxygen (generally 0.5-0.8%), and a small amount of oxygen in the raw gas will react with the active components or carriers in the catalyst to produce sulfuric acid The salinization reaction deactivates the catalyst quickly, so it is necessary to fill a large amount of sulfur-resistant shift deoxidizer above the catalyst bed to remove the oxygen in the raw material gas to less than 0.2%, so as to prolong the service life of the catalyst. The current industrial deoxidizers are all based on γ-Al 2 o 3 As a carrier, its strength and strength stability, especially its erosion resistance, are poor. During industrial operation, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/20C10K1/34
Inventor 纵秋云余汉涛郭建学陈依屏张新堂孙海燕李欣白志敏
Owner QILU PETRO CHEM - SINOPEC
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