Entrained flow bed gasifier

Abstract

The embodiment of the invention provides an entrained flow bed gasifier, belonging to the technical field of coal gasification. The entrained flow bed gasifier can effectively separate the solid particles from the generated gas phase in the gasification furnace and greatly lower the semicoke entrainment quantity of the product gas. The entrained flow bed gasifier comprises a furnace body, wherein the furnace body is obliquely provided with a hydrogen gas nozzle; the hydrogen gas nozzle and the vertical axis of the furnace body form a first included angle alpha; and the hydrogen gas nozzle and the horizontal central axis form a second included angle beta. The lower part of the furnace body is provided with a conical solid collecting tank. The entrained flow bed gasifier can be used for coal hydrogenation gasification reaction.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to an entrained bed gasification device. Background technique [0002] The one-step natural gas preparation technology was developed in the 1980s to prepare natural gas, which mainly includes coal catalytic gasification and hydrogenation gasification, that is, coal hydrogenation gasification technology. This technology refers to the reaction of coal and hydrogen at high temperature (800-1000°C) and high pressure (3-7MPa) to generate methane-rich gas and light tar. It has the characteristics of simple process, high thermal efficiency, and low pollution, so it has become a common technology for preparing natural gas in the prior art. [0003] At present, the gasifier used in coal hydrogasification technology generally has the technical problem of excessive semi-coke entrainment in the product gas. This is because after coal powder and hydrogen undergo hydrogenation gasific...

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Problems solved by technology

[0003] At present, the gasifier used in coal hydrogasification technology generally has the technical problem of excessive semi-coke entrainment in the product gas

This is because after coal powder and hydrogen undergo hydrogenation gasification reaction in the gasifier to generate gas, the generated gas has upward power during the upward process and the gas volume is relatively large, resulting in semi-coke with low density, etc. Solid particles are entrapped in the gas and rise together with the gas, so that the entrainment of semi-coke in the product gas at the outlet of the gasifier is relatively large, and it also causes great difficulties in the dust removal treatment of the subsequent system

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