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Carbonyl sulfur hydrolyzing catalyst

A technology of hydrolysis catalyst and carbonyl sulfide, which is applied in the field of carbonyl sulfide hydrolysis catalyst, can solve the problems of easy oxidation and unqualified copper sheet corrosion, and achieve the effect of good sulfur and oxygen resistance and high catalytic activity

Active Publication Date: 2008-08-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After the liquefied petroleum gas is washed with alcohol amine, under normal circumstances, the hydrogen sulfide content of the liquefied petroleum gas can be reduced to 20 μg / g or even several μg / g, and the remaining small amount of hydrogen sulfide is easily oxidized in the subsequent sweetening process Elemental sulfur, resulting in unqualified copper corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 138.9g of pseudo-boehmite (water content 28%) and 4g of turnip powder, mix and stir thoroughly, bind with nitric acid, extrude with an extruder, dry the strip particles at 110°C for 8 hours, and then dry them at 550°C Calcined for 5 hours to obtain a catalyst carrier. The first step is to use 100g of magnesium nitrate solution with a concentration of 10wt% to impregnate the catalyst carrier in equal volume for 8 hours, and the impregnated particles are dried at 110°C for 8 hours, and then roasted at 550°C for 5 hours. 100 g of potassium carbonate solution is impregnated with equal volume of the catalyst particles obtained in the first step for 8 hours, the impregnated particles are dried at 110°C for 8 hours, and then roasted at 550°C for 5 hours to obtain the finished catalyst, and the catalyst is broken into 10-20 meshes. use. The evaluation conditions of the carbonyl sulfide hydrolysis catalyst are: the raw material is liquefied petroleum gas containing 91 μg / ...

Embodiment 2

[0039] Take by weighing pseudo-boehmite 125g (water content 28%), metatitanic acid 19.6g (water content 49%) and 4g scallop powder, fully mix and stir, bond with nitric acid, extrude strips with extruder, strip particles ℃ for 8 hours, and then baked at 550 ℃ for 5 hours to obtain a catalyst carrier. The first step is to use 100g of magnesium nitrate solution with a concentration of 10wt% to impregnate the catalyst carrier in equal volume for 8 hours, and the impregnated particles are dried at 110°C for 8 hours, and then roasted at 550°C for 5 hours. 100 g of potassium carbonate solution is impregnated with equal volume of the catalyst particles obtained in the first step for 8 hours, the impregnated particles are dried at 110°C for 8 hours, and then roasted at 550°C for 5 hours to obtain the finished catalyst, and the catalyst is broken into 10-20 meshes. use. The evaluation conditions of the carbonyl sulfide hydrolysis catalyst are: the raw material is liquefied petroleum g...

Embodiment 3

[0041] Take by weighing pseudo-boehmite 125g (water content 28%), metatitanic acid 19.6g (water content 49%) and 4g scallop powder, fully mix and stir, bond with nitric acid, extrude strips with extruder, strip particles ℃ for 8 hours, and then baked at 550 ℃ for 5 hours to obtain a catalyst carrier. In the first step, 100 g of magnesium nitrate solution with a concentration of 10 wt % is used to impregnate the catalyst carrier in equal volume for 8 hours, and the impregnated particles are dried at 110 ° C for 8 hours, and then roasted at 550 ° C for 5 hours. 100 g of sodium carbonate solution is impregnated with equal volumes of the catalyst particles obtained in the first step for 8 hours, and the impregnated particles are dried at 110° C. for 8 hours, and then roasted at 550° C. for 5 hours to obtain the finished catalyst. The catalyst is broken into 10-20 meshes. use. The evaluation conditions of the carbonyl sulfide hydrolysis catalyst are: the raw material is liquefied ...

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Abstract

The present invention provides a carbonyl sulfur hydrolyst, including a carrier and an active component, characterized in that the active component of the catalyst includes an active component I and an active component II, the active component I is selected from sodium carbonate, potassium carbonate or their mixtures, the active component II is selected from following metal oxide: Be, Mg, Ca, Sr, Ba, or mixtures of their metal oxides, the catalyst carrier is selected from Al2O3 or mixture of Al2O3 and TiO2 or ZrO2, the percentage by weight in the catalyst: the active component I is 2wt%-15wt%, the active component II is 2wt%-15wt%, the carrier is 70wt%-96wt%. The catalyst is used for carboxide sulphur compound in desorption LPG, natural gas, refinery gas, catalytic cracking process gas, propylene and ethylene, the percent conversion is more than 95%.

Description

technical field [0001] The present invention relates to catalysts for the hydrolysis of carbonyl sulfide (COS). Background technique [0002] Liquefied petroleum gas (LPG) usually contains H 2 S, COS, CS 2 , mercaptan, thioether and disulfide and other toxic and harmful components, especially the H 2 S, COS and mercaptans are more harmful. If they are not removed, they will cause great pollution to the environment and have a great impact on the subsequent processing. [0003] At present, when LPG is used as industrial and civil fuel at home and abroad, there are requirements on the total sulfur content and the corrosion level of copper sheets. If it is used as a chemical raw material, the requirements are even stricter. Therefore, the deep removal of sulfide in liquefied petroleum gas realizes the The chemical utilization of light hydrocarbons and the reduction of environmental pollution have become very important. [0004] After the liquefied petroleum gas is washed wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232B01J27/25B01J23/02B01J21/18
Inventor 柯明许赛威刘成翠宋昭峥蒋庆哲
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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