Pilot-scale test treatment process for raw gas

Abstract

The embodiment of the invention discloses a pilot plant test treatment process for raw gas, and belongs to the technical field of coal mining. The pilot plant test treatment process comprises a separation unit, a washing unit, a desulfurization unit, a torch unit and a gas component analyzer, the gas outlet end of the separation unit is communicated with the gas inlet end of the washing unit, the gas outlet end of the washing unit is communicated with the gas inlet end of the desulfurization unit, the gas outlet end of the desulfurization unit is communicated with the torch unit, and the gas component analyzer is mounted at the gas outlet end of the separation unit. In the embodiment of the invention, for the raw gas produced after underground gasification of underground deep coal, the content of each gas component in the raw gas can be analyzed through the gas component analyzer, so that the injection amount of oxygen and water vapor can be conveniently adjusted; and further, based on the adjusted injection amounts of the oxygen and the water vapor, the conventional treatment of the subsequently produced raw gas is facilitated. And the produced raw gas is sequentially subjected to separation, washing and desulfurization treatment, so that emptying combustion is carried out, and the pollution to the atmospheric environment is avoided.

Description

technical field [0001] The embodiments of the present application relate to the technical field of coal mining, and in particular, to a pilot-scale treatment process for crude gas. Background technique [0002] Compared with traditional surface coal mining, UCG (Underground Coal Gasification, UCG) can greatly reduce the investment of equipment, and can save coal transportation, washing, gasification and other processes, and has the advantages of safety. Because of its good performance and high efficiency, UCG has been widely used. Among them, UCG refers to a chemical coal mining technology that injects oxygen and water vapor into underground coal under appropriate process conditions to achieve controlled combustion of coal, thereby producing crude gas. Among them, the crude gas includes combustible gases such as hydrogen, carbon monoxide and methane. [0003] With the gradual mining of shallow underground coal, deep underground coal has become the current mining target. H...

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Problems solved by technology

However, due to the difference between the composition of deep underground coal and shallow underground coal, and the high pressure of crude gas produced by underground coal gasification mining of deep underground coal, it is not possible to directly use shallow underground coal to produce crude gas. The gas treatment process processes the crude gas produced by deep underground coal

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