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Organic sulfur hydrolysis catalyst applicable to Claus process as well as preparation method and application of organic sulfur hydrolysis catalyst

A hydrolysis catalyst and organosulfur technology, applied in the field of organosulfur hydrolysis catalyst and its preparation, can solve problems such as high unfavorable Claus reaction, and achieve the effects of high-efficiency hydrolysis, strong tunability of components and structures, and ultra-low emission

Pending Publication Date: 2021-11-19
UNIVERSITY OF CHINESE ACADEMY OF SCIENCES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst for high concentration CS 2 Excellent hydrolysis performance, but the reaction temperature is 280°C, high temperature is not conducive to the progress of Claus reaction

Method used

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  • Organic sulfur hydrolysis catalyst applicable to Claus process as well as preparation method and application of organic sulfur hydrolysis catalyst
  • Organic sulfur hydrolysis catalyst applicable to Claus process as well as preparation method and application of organic sulfur hydrolysis catalyst
  • Organic sulfur hydrolysis catalyst applicable to Claus process as well as preparation method and application of organic sulfur hydrolysis catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 7.692g of magnesium nitrate hexahydrate was dissolved in 100mL of deionized water, under vigorous stirring, was added sequentially 8.88mL tetraisopropyl titanate, 2.4 g of sodium hydroxide, an alkali metal compound, stirred for 1h. The resulting solution was transferred to a 180mL capacity of the hydrothermal reaction vessel, the reaction oven 24h 200 ℃. Taken sample of the solution with deionized water and ethanol by centrifugation, washed three times and placed in an oven at 120 deg.] C and dried 12h. Powder sample was taken, placed in a muffle furnace 650 ℃ calcined 6h, heating rate 5 ℃ / min, the resultant sample was referred to as MT.

Embodiment 2

[0044] 7.085g of calcium nitrate tetrahydrate was dissolved in 100mL of deionized water, under vigorous stirring, was added sequentially 8.88mL tetraisopropyl titanate, 2.4 g of sodium hydroxide, an alkali metal compound, stirred for 1h. The resulting solution was transferred to a 180mL capacity of the hydrothermal reaction vessel, the reaction oven 24h 200 ℃. Taken sample of the solution with deionized water and ethanol by centrifugation, washed three times and placed in an oven at 120 deg.] C and dried 12h. Powder sample was taken, placed in a muffle furnace 650 ℃ calcined 6h, heating rate 5 ℃ / min, the resultant sample was referred to as CT.

Embodiment 3

[0046] The strontium nitrate was dissolved in 6.349g 100mL deionized water, under vigorous stirring, was added sequentially 8.88mL tetraisopropyl titanate, 2.4 g of sodium hydroxide, an alkali metal compound, stirred for 1h. The resulting solution was transferred to a 180mL capacity of the hydrothermal reaction vessel, the reaction oven 24h 200 ℃. Taken sample of the solution with deionized water and ethanol by centrifugation, washed three times and placed in an oven at 120 deg.] C and dried 12h. Powder sample was taken, placed in a muffle furnace 650 ℃ calcined 6h, heating rate 5 ℃ / min, the resultant sample was referred to as ST.

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Abstract

The invention belongs to the technical field of sulfur recovery processes, and particularly relates to an organic sulfur hydrolysis catalyst suitable for a Claus process and a preparation method of the organic sulfur hydrolysis catalyst. The general formula of the perovskite type composite oxide catalyst is ABOx, the perovskite type composite oxide catalyst is synthesized through a hydrothermal method, A is alkali or alkaline earth metal elements and comprises Na, K, Cs, Mg, Ca, Sr and Ba, B is transition metal elements and comprises Ti, Fe and Co, and x is equal to 1.5-3. The material has the characteristics of strong composition and structure adjustability, abundant surface acid-base sites and the like, and has excellent organic sulfur catalytic hydrolysis activity.

Description

Technical field [0001] The present invention belongs to the technical field of sulfur recovery processes, in particular to a suitable Claus process organosulfur hydrolysis catalyst and a preparation method and application. Background technique [0002] Sulfur conventional acid gas recovery process, which apparatus comprises a main direction of gas flow Sulfur burner, two Claus reactors. The reaction occurs in the high-temperature heat Sulfur furnace, the feed gas in the third of the H 2 S is combusted to SO 2 Two-thirds of H 2 S and SO generated 2 A mixed gas of the Claus reaction occurs, leaving the combustion chamber is cooled, the liquid sulfur is then separated, and then the gas has entered two Claus reactor the Claus catalytic reaction occurs, the sulfur recovery rate is further improved acid gases H 2 S is converted to sulfur recovery. [0003] Total sulfur Claus reaction equation may be represented as follows: [0004] Hide 2 S + 0.5SO 2 = 0.75S 2 + H 2 O-47.06KJ / mol. ...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J23/745B01J23/75B01D53/48B01D53/72B01D53/86
CPCB01J23/02B01J23/745B01J23/75B01D53/485B01D53/72B01D53/8606B01D53/8668
Inventor 郝郑平李铁军魏征张凤莲蒋国霞王震宇张中申
Owner UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
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