Coal underground gasification on-way sampling simulation experiment system and method
A technology of underground gasification and simulation experiments, applied in coal gasification, underground mining, earth drilling and mining, etc., can solve the problem of low calorific value of synthesis gas, achieve the effects of reducing pollution, optimizing gas production, and changing temperature distribution
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[0038] Example 1:
[0039] refer to Figure 1-5 , The present invention provides a technical solution, a simulation experiment system for sampling along the process of underground coal gasification, including a gas supply device, a gasifier body, a sampling device along the process, and an analysis and testing device;
[0040]The gasifier body includes a box 1, the size of which is 746mm × 516mm × 519mm. The box 1 can be placed on a support frame. The box 1 is provided with a coal sample 5, and the coal sample 5 is provided with a gasification channel 25 inside. The upper end of the box body 1 is evenly provided with five air outlet holes 10 along the course, the left and right ends of the box body 1 are respectively provided with an air inlet 3 and an air outlet 4, and the two ends of the gasification passage 25 are respectively connected with the air inlet 3 and the outlet. The air port 4 is connected, and the air supply device is connected to the air inlet 3 through a pipe...
Example Embodiment
[0050] Example 2:
[0051] refer to Figure 1-5 , the present invention provides a technical solution, on the basis of Embodiment 1, a simulation experiment method for sampling along the process of underground coal gasification, using a simulation experiment system for sampling along the process of underground coal gasification of Embodiment 1, including the following step,
[0052] Step 1: Arrange coal blocks 24 with grooves inside the box 1, and the combined grooves after the coal blocks 24 are spliced form a gasification channel 25, and an ignition device 31 is arranged inside the gasification channel 25, and the ignition device 31 is powered by electric motors. The firearm is composed of alcohol cotton and pulverized coal combustibles. Four coal blocks 24 with a length, width and height of 230mm×115mm×230mm are arranged inside the cavity of the gasifier, and the final size is 460mm×230mm. ×230mm, the coal block 24 is Shenmu bituminous coal, the grooves processed in adv...
Example Embodiment
[0062] Example 3
[0063] On the basis of Example 2, in step 5, during the gasification experiment, the second pure oxygen cylinder 41 and the second carbon dioxide cylinder 37 are opened, and the fourth stage pressure reducing valve 7 and the third stage pressure reducing valve are adjusted by adjusting the fourth stage pressure reducing valve 7 and the third stage pressure reducing valve. The valve 40 controls the flow ratio of carbon dioxide and oxygen injected into the gasifier body through the gas injection pipe 901 along the process, preventing insufficient gasification at a position far away from the air inlet 3, and increasing the effective gas production composition; The air holes 9 are arranged between the air inlet 3 and the air outlet 4 to facilitate the improvement of the efficiency and degree of the gasification reaction at different positions in the gasification channel 25. By controlling the amount of additional gasification agents such as oxygen and carbon diox...
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