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Medium temperature carbon bisulfide hydrolytic catalyst and preparation method and application thereof

A technology for hydrolysis catalysts and carbon disulfide, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxides/metal hydroxide catalysts, etc., can solve difficult removal problems, achieve high hydrolysis catalytic rate, Considerable economic and social benefits

Inactive Publication Date: 2008-02-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The purpose of a kind of middle temperature carbon disulfide hydrolysis catalyst of the present invention and its preparation method and application is to solve the problem of CS in the catalytic hydrolysis process of carbon disulfide. 2 Compared with COS, it is difficult to remove the problem, so as to provide a technical solution for a medium-temperature carbon disulfide hydrolysis catalyst and its preparation method and application

Method used

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  • Medium temperature carbon bisulfide hydrolytic catalyst and preparation method and application thereof
  • Medium temperature carbon bisulfide hydrolytic catalyst and preparation method and application thereof
  • Medium temperature carbon bisulfide hydrolytic catalyst and preparation method and application thereof

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Experimental program
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Effect test

Embodiment approach 1

[0031] Heat the sample of the pre-loaded component to 200°C, then cool it, weigh 10g of the sample of the pre-loaded component after heat treatment, put it into a 50ml round bottom flask, and titrate with water, shake the round bottom flask continuously during the titration process, until you see Until the surface of the sample is completely wetted, the amount of titrated water is read at this time, so as to obtain the saturated water absorption rate of the sample preloaded with components.

Embodiment approach 2

[0033] Choose N 2 Adsorption BET specific surface area is 260m 2 / g, the pore volume is 0.42cm 3 / g of commercially available γ-Al 2 o 3 , according to Embodiment 1, its saturated water absorption rate is 0.61ml / g. Weigh 90.5g of carrier Al 2 o 3 According to the saturated water absorption rate, the required amount of impregnation solution is calculated to be 90.5g×0.61ml / g=55.2ml, and 10.46g Zr(NO 3 ) 4 ·5H 2 O and 1.33g La(NO 3 ) 3 ·6H 2 A mixture composed of O, to obtain 55.2ml of impregnation solution, the prepared impregnation solution was completely added to the carrier γ-Al 2 o 3 In a round-bottomed flask, after immersion for 2 hours, dry at 100°C for 4 hours, and bake at 550°C for 4 hours. According to Embodiment 1, the saturated water absorption rate of the sample after loading the components in the first step was measured to be 0.51ml / g, and then 8.83gK was dissolved in distilled water 2 CO 3, to obtain 51ml of impregnation solution, completely add the...

Embodiment approach 3

[0035] Weigh 80.5g of carrier Al 2 o 3 According to the saturated water absorption measured by the method of embodiment 1, the required amount of impregnating solution is calculated to be 80.5g * 6.1ml / g=49.1ml, and 27.9g Zr(NO 3 ) 4 ·5H 2 O and 6.65gLa(NO 3 ) 3 ·6H 2 A mixture composed of O to obtain 49.1ml of impregnation solution, and the prepared impregnation solution was completely added to the carrier γ-Al 2 o 3 In a round-bottomed flask, after immersion for 2 hours, dry at 100°C for 4 hours, and bake at 550°C for 4 hours. According to Embodiment 1, the saturated water absorption rate of the sample after the first step of loading components was measured to be 0.45ml / g, and then 13.24gK was dissolved in distilled water 2 CO 3 , to obtain 45ml of impregnation solution, completely add the configured impregnation solution into the round-bottomed flask containing the sample after loading the components in the first step, after impregnation for 2 hours, dry at 100°C f...

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Abstract

A medium-temperature carbon disulfide hydrolysis catalyst and its preparation method and application belong to a catalyst for removing organic sulfur in raw material gas, and the purpose is to solve the problem that CS2 is difficult to remove compared with COS in the catalytic hydrolysis of carbon disulfide. It is characterized in that by adding catalyst modifiers ZrO2 and La2O3, a catalyst with high CS2 hydrolysis catalytic rate, anti-coking and no conversion side reactions is obtained at medium temperature, and its preparation method is that the modifier and the activity accelerator are divided into two steps Loading is done by isometric impregnation. Under normal pressure, temperature 200-400°C, space velocity 2000-8000h-1, CO volume content 0-30%, CS2 concentration less than 500mgS / m3, the carbon disulfide hydrolysis conversion rate is above 95%. It is mainly developed for medium-temperature purification of carbon disulfide in industrial gases containing carbon monoxide, and has considerable application value, economic benefits and social benefits.

Description

technical field [0001] The invention relates to a medium-temperature carbon disulfide hydrolysis catalyst and its preparation method and application, which belong to a catalyst for removing organic sulfur in raw material gas, and specifically relate to a medium-temperature carbon disulfide hydrolysis catalyst and its preparation method and application. Background technique [0002] As we all know, organic sulfur widely exists in the raw material gas of chemical production, which uses coal, natural gas and petroleum as raw materials, and its existence will cause catalyst poisoning and deactivation in the subsequent production process. Especially at present, as low-quality coal and coke oven gas are used for the preparation of synthetic raw material gas, as well as the research, development and application of new technologies or new processes such as coal-to-gas polygeneration and low-temperature water-steam shift, normal and low-temperature fine organic removal Sulfur and med...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J23/04B01J21/06
Inventor 上官炬王晓鹏梁丽彤樊惠玲沈芳梁生兆苗茂谦谢克昌
Owner TAIYUAN UNIV OF TECH
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