Method for quickly detecting carbon deposition resistance performance of methane synthesis catalyst

A methane synthesis and catalyst technology, which is applied in chemical analysis, analysis materials, instruments, etc. by using catalysis, can solve the problems of long time consumption, high detection cost, and low accuracy

Active Publication Date: 2017-12-08
XINDI ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It can be seen that using this method to detect the anti-carbon deposition performance of methane synthesis catalysts, 1. It takes a long time, and there are too many uncontrollable factors in the detection process. Once an accident occurs, the experiment must be started from the beginning, and the work efficiency

Method used

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  • Method for quickly detecting carbon deposition resistance performance of methane synthesis catalyst
  • Method for quickly detecting carbon deposition resistance performance of methane synthesis catalyst
  • Method for quickly detecting carbon deposition resistance performance of methane synthesis catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0052] A foreign catalyst, product number CRG, uses the device described in patent ZL2016202013246. The catalyst is loaded in the constant temperature section of the reactor. Pressure leak test to 3.0MPa, observe whether the pressure before and after the reactor is consistent (the purpose is to check whether the pressure gauge is working normally). Introduce high-purity nitrogen to replace the air in the system. After confirming that all of the system is nitrogen, hold the pressure to 1.0-1.02MPa, stop nitrogen, and start to heat up by introducing hydrogen. It takes 1.5 hours to raise the temperature to 300°C, and keep at 300°C for 2 The catalyst is reduced in one hour, and the reduction space velocity is 500h -1 After the reduction, stop the flow of hydrogen, release the pressure to 0.2MPa, and replace the hydrogen in the system with nitrogen. During the process of replacing hydrogen with nitrogen, the temperature was raised to 500°C, and after confirming that no hydrogen wa...

Embodiment 2

[0058] Our company’s third-generation catalyst, the catalyst product number is XDJ-03 (can be purchased from Xindi Energy Engineering Technology Co., Ltd.), using the device described in the patent ZL2016202013246, the catalyst is loaded in the constant temperature section of the reactor, the catalyst must be installed flat, the catalyst The two sides are isolated with an appropriate amount of quartz wool, and the upper and lower sides are filled with ceramic balls. Pressure leak test to 3.0MPa, observe whether the pressure before and after the reactor is consistent (the purpose is to check whether the pressure gauge is working normally). Introduce high-purity nitrogen to replace the air in the system. After confirming that all of the system is nitrogen, hold the pressure to 1.0-1.02MPa, stop nitrogen, and start to heat up by introducing hydrogen. It takes 1.5 hours to raise the temperature to 300°C, and keep at 300°C for 2 The catalyst is reduced in one hour, and the reductio...

Embodiment 3

[0064] Our unit’s fourth-generation catalyst, the catalyst product number is XDJ-204 (can be purchased from Xindi Energy Engineering Technology Co., Ltd.), using the device described in the patent ZL2016202013246, the catalyst is loaded in the constant temperature section of the reactor, the catalyst must be installed flat, the catalyst The two sides are isolated with an appropriate amount of quartz wool, and the upper and lower sides are filled with ceramic balls. Pressure leak test to 3.0MPa, observe whether the pressure before and after the reactor is consistent (the purpose is to check whether the pressure gauge is working normally). Introduce high-purity nitrogen to replace the air in the system. After confirming that all of the system is nitrogen, hold the pressure to 1.0-1.02MPa, stop nitrogen, and start to heat up by introducing hydrogen. It takes 1.5 hours to raise the temperature to 300°C, and keep at 300°C for 2 The catalyst is reduced in one hour, and the reduction...

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Abstract

The invention relates to a method for quickly detecting the carbon deposition resistance performance of methane synthesis catalyst. The method comprises the following steps: flatly filling the catalyst into the constant-temperature section of a methanation reactor; two sides of the catalyst are isolated, pressure is built for testing leakage, air is introduced into a nitrogen replacement system, then, pressure is built, nitrogen stops being introduced, hydrogen reduction catalyst is introduced, nitrogen stops being introduced after reaction is finished, pressure is released, hydrogen in the system is replaced by nitrogen, temperature is raised, and pressure is built after a situation that no hydrogen is detected in the system is confirmed; then, raw material gas used for methanation reaction is introduced to carry out methanation reaction, the inlet and outlet gas composition of the methanation reactor is measured by a gas chromatograph, a molar ratio of the carbonic oxide to the carbon dioxide of the outlet of the reactor is measured, and reaction time and a pressure difference value generated until reaction is finished are recorded; a carbon deposition amount and a catalyst particle integrity rate are measured, and a detected parameter is used for judging the index of the carbon deposition resistance performance of the catalyst.

Description

technical field [0001] The invention relates to a method for quickly detecting the anti-carbon deposition performance of a methane synthesis catalyst. Background technique [0002] Methanation technology was first applied in ammonia synthesis process to remove CO and CO in raw gas 2 In the 1940s, foreign countries attached great importance to the research on methanation to produce qualified natural gas and city gas technology. In the early 1970s, domestic and foreign researches on replacing natural gas with coal, naphtha, etc. began to enter the 21st century. At home and abroad, the research on coke oven gas to natural gas technology has begun, and in recent years, the research on coal to natural gas technology has begun. These technologies use different gas sources to produce natural gas. Regardless of the gas source, the reaction formula is: [0003] CO+3H 2 →CH 4 +H 2 O (1) [0004] CO 2 +4H 2 →CH 4 +2H 2 O (2) [0005] CO+CO→C+CO 2 (3) [0006] When methane...

Claims

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Application Information

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IPC IPC(8): G01N7/00G01N15/00G01N31/10
CPCG01N7/00G01N15/00G01N31/10
Inventor 堵俊俊刘鹏翔郭迎秋司瑞刚
Owner XINDI ENERGY ENG TECH
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