Underground fuel gasification method, gasifying agent delivery pipe and underground fuel gasification system

Abstract

The invention discloses an underground fuel gasification method, a gasifying agent delivery pipe and an underground fuel gasification system. The underground fuel gasification method comprises the steps of respectively and continuously delivering water and combustion-supporting gas to an underground fuel gasification reaction zone, atomizing the water delivered to the underground fuel gasification reaction zone by using pressure potential energy of water from the ground to the underground, mixing water vapor produced after atomization with the combustion-supporting gas delivered to the underground fuel gasification reaction zone to form mist gasifying agent, and producing fuel gas through gasification reaction between the mist gasifying agent and the underground fuel in the underground fuel gasification reaction zone by combustion and heating. The gasifying agent delivery pipe comprises a water delivery pipe and a gas delivery pipe. The underground fuel gasification system comprises an underground gasification furnace, the gasifying agent delivery pipe and an atomizing and mixing nozzle. The water and combustion-supporting gas can be mixed in the underground fuel gasification reaction zone to form the mist gasifying agent without using heat, the normalization and stabilization of the underground gasification process are realized, and the production cost is greatly reduced.

Description

technical field [0001] The invention relates to a fuel gasification method, a gasification agent delivery pipe and a system thereof, in particular to an underground fuel gasification method, a gasification agent delivery pipe and a system thereof. Background technique [0002] According to the statistics of the China Coalfield Geology Administration (1999), the coal resources with a buried depth of less than 2000m in my country total 4552.104 billion tons. Among them: 1,844.048 billion tons of coal resources buried below 1,000m, of which 916.910 billion tons are reliable, accounting for 40.5% of the predicted total; 1,340.375 billion tons are buried at 1,000-1,500m, of which 667.691 billion tons are reliable, accounting for 40.5% of the predicted total. 29.4% of the total; buried depth of 1500-2000m is 1,367.681 billion tons, of which 329.229 billion tons are reliable, accounting for 30.1%. Deep resources (below 1000m) account for 59.5% of my country's coal resource reserve...

AI Technical Summary

Problems solved by technology

[0008] In the prior art, a large amount of sewage from coal gas condensation is directly passed into the gasifier without any treatment, which will have a certain negative impact on the gasifier and affect the normal combustion and gasification of the gasifier. In severe cases, it will cause the gasifier to go out

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