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Catalyst and regeneration method for methane-hydrogen sulfide reforming hydrogen production process

A catalyst and transition metal technology, applied in the field of catalyst and its regeneration in the hydrogen production process of methane-hydrogen sulfide reforming, can solve the problems of no catalyst regeneration method, no development, etc.

Active Publication Date: 2022-04-29
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no carbon deposition-resistant methane-hydrogen sulfide reforming hydrogen production catalyst has been developed yet, and there is no research report on the catalyst regeneration method used in this process.

Method used

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  • Catalyst and regeneration method for methane-hydrogen sulfide reforming hydrogen production process
  • Catalyst and regeneration method for methane-hydrogen sulfide reforming hydrogen production process
  • Catalyst and regeneration method for methane-hydrogen sulfide reforming hydrogen production process

Examples

Experimental program
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Effect test

Embodiment 1

[0124] Al at a concentration of 10g / L 2 (SO 4 ) 3 1L of solution is used as the raw material, and NaAlO with a concentration of 10g / L is added dropwise while stirring in a water bath at 25°C. 2 Solution, when the pH of the mixed solution=8.0, stop dripping and stirring, then let it stand for 12 hours, then add MgSO with a concentration of 5g / L 4 3L of the solution and 1g of sodium lauryl sulfate powder were placed in an ultrasonic oscillator for 6 hours of shaking. The shaken mixture was filtered, and the filter cake was washed with deionized water. Take out the filter cake, put it into absolute ethanol liquid and soak for 1 hour, and then obtain the filter cake after filtering. Put the filter cake in a fume hood to air-dry for 12 hours, then put it in a 120°C oven for 12 hours, then transfer it to a high-temperature muffle furnace, raise the temperature to 800°C at a rate of 2°C / min, and keep it at a constant temperature for 12 hours. After cooling get MgAl 2 o 4 sampl...

Embodiment 2

[0127] Al with a concentration of 60g / L 2 (SO 4 ) 3 1L of solution is used as the raw material, and NaAlO with a concentration of 60g / L is added dropwise while stirring under the condition of a water bath at 85°C. 2 Solution, when the pH of the mixed solution=8.0, stop the dripping and stirring, then cool and stand for 12 hours, then add MgSO with a concentration of 55g / L 4 Solution 3L, and sodium lauryl sulfate powder 50g, then put it into an ultrasonic oscillator and vibrate for 6 hours. Filter the shaken mixture, wash the filter cake with deionized water, take out the filter cake, soak it in absolute ethanol liquid for 12 hours, and obtain the filter cake after filtering. Put the filter cake in a fume hood to air-dry for 12 hours, then put it in a 120°C oven to dry for 12 hours, then transfer it to a high-temperature muffle furnace, raise the temperature to 1200°C at a rate of 2°C / min, and keep it at a constant temperature for 12 hours. After cooling get MgAl 2 o 4 sa...

Embodiment 3

[0130] Al at a concentration of 40g / L 2 (SO 4 ) 3 1L of solution is used as the raw material, and NaAlO with a concentration of 50g / L is added dropwise while stirring in a water bath at 65°C. 2 solution, when the pH of the mixed solution = 8.0, stop dripping and stirring, then let it stand for 12 hours, and add MgSO with a concentration of 45g / L 4 Solution 3L, and sodium lauryl sulfate powder 20g, put into the ultrasonic oscillator and vibrate for 6 hours, wash the filter cake with deionized water after filtering, put the filter cake into absolute ethanol liquid and soak for 8 hours, filter and put The filter cake was air-dried in a fume hood for 12 hours, then dried in an oven at 120°C for 12 hours, then transferred to a high-temperature muffle furnace, heated to 1000°C at a rate of 2°C / min, kept at a constant temperature for 12 hours, and obtained after cooling MgAl 2 o 4 Sample, the sample is soaked in the weight concentration of 20% ethylene glycol aqueous solution, f...

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Abstract

The invention discloses a catalyst used in the methane-hydrogen sulfide reforming hydrogen production process and a regeneration method thereof. The material composition of the catalyst is Mo-M-Sx and MgAl 2 o 4 , wherein M is a transition metal, Mo-M-Sx is a composite sulfide of Mo and M; based on the total pore volume of the catalyst, the volume ratio of pores with a pore diameter of 50-500nm is 60-90v / v%.

Description

technical field [0001] The invention relates to the fields of new material manufacturing and new energy development, in particular to a catalyst used in the methane-hydrogen sulfide reforming hydrogen production process and a regeneration method thereof. Background technique [0002] Catalytic reforming reaction process between methane and hydrogen sulfide: CH 4 +2H 2 S=CS 2 +4H 2 , not only can convert toxic and harmful hydrogen sulfide, but also make full use of the precious hydrogen and sulfur resources in hydrogen sulfide to obtain new energy hydrogen and high value-added carbon disulfide, turning waste into treasure. This reaction process has attracted great attention in the chemical and energy circles in recent years. Since this reaction is a strong endothermic process, it needs to be carried out at high temperature (>800°C) to achieve a high equilibrium conversion rate. However, methane is easily cracked at high temperature, and carbon deposits are formed to co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J38/04C01B3/40
CPCB01J27/051B01J27/0515C01B3/40B01J38/04C01B2203/0227C01B2203/1241C01B2203/1052Y02P20/52Y02P20/584
Inventor 李平马哲杰赵炫凯张文励周君尧张文畅张宏康殷羽彤
Owner EAST CHINA UNIV OF SCI & TECH
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