Characterization method and device for in-situ unsteady surface chemical reaction

[0019] Example 1: The method of in-situ coal pyrolysis semi-coke gasification reaction is: firstly, the coal is crushed and sieved to the required particle size, the coal sample is dried, and an appropriate amount is taken into the surface generator, and then a certain flow rate Inject carrier gas, program at different heating rates to the predetermined temperature and constant temperature for a period of time to produce semi-coke. During the pyrolysis process, chromatographic mass spectrometry performs synchronous and online detection of its pyrolysis products to quickly reflect changes on the surface of the coal sample. The semi-coke sample is not taken out, and steam is injected into the surface generating device with the gas generating device in situ to fully contact the semi-coking coal sample for gasification reaction. During the experiment, the gas generated in the surface generating device is purified by the purifier Enter the separation equipment to separate, the detection and control system for the separated H 2 , CO 2 , CO and CH 4 Wait for the gas to perform quantitative analysis, and then these separated gases enter another detection system for their simultaneous online qualitative review and analysis.

[0020] The equipment for the in-situ coal pyrolysis semi-coke gasification reaction is: it is composed of a surface reaction generating device 1, a gas purifier 2, a separation device 3, a gas generating device 4, a temperature control system 5, a detection control system 6 and 7, and The gas pipeline consists of seven parts.

[0021] Example 2: The method of in-situ methanation catalytic reaction of synthesis gas is: firstly, the catalyst is ground or sieved to the required particle size, an appropriate amount is loaded into the surface generator, and then the synthesis gas is introduced according to a certain flow rate and proportion, and the temperature is raised to The experiment predetermined temperature and constant temperature, under a certain pressure, and then use the gas generator to drive the synthesis gas into the surface generator to fully contact with the catalyst for the methanation reaction. During the experiment, the generated gas generated in the surface generator is purified by the purifier and enters The separation equipment is separated, and the detection and control system monitors the H in the separated gas 2 , CO 2 , CO and CH 4 After the gas concentration is quantitatively analyzed, the syngas enters another detection system for its simultaneous online qualitative review and analysis.