Liquid-state lag tapping device of slack coal slag gasifier

Abstract

The invention relates to a liquid-state lag tapping device of a slack coal slag gasifier. The liquid-state lag tapping device comprises a main body, a cooling agent flowing pipeline and a slag tapping channel, wherein the cooling agent flowing pipeline is buried in the main body; the slag tapping channel penetrates through the main body, extends to the bottom end of the main body from the top end of the main body, and is symmetrically arranged around the longitudinal axis of the main body; and through the slag tapping channel, the upside of the liquid-state slag tapping device is communicated with a coal gasification pressure container and the downside of the liquid-state slag tapping device is communicated with a chilling chamber; the main body comprises a main body upper part and a main body lower part, the slag tapping channel limited by the inner surface of the main body upper part is downward converged along with the longitudinal axis of the main body; and the slag tap of the liquid-state slag tapping device is limited by the inner surface of the main body lower part. The liquid-state lag tapping device for the slack coal slag gasifier can avoid or withstand the invasion and corrosion of molten slag and ferrum as well as thermal impact influence, and is long in service life and convenient to disassemble and maintain.

Description

technical field [0001] The present invention generally relates to a pulverized coal slag gasifier, in particular to a liquid slag discharger for a pulverized coal slag gasifier. Background technique [0002] Lurgi gasifier is a kind of equipment for pressurized coal gasification. The Lurgi furnace uses a mechanical grate to dry ash and slag. The pulverized coal slag gasifier is based on the modern development of the Lurgi furnace, which has a higher coal-to-gas conversion efficiency, a larger coal input to the gasifier of the same size, and greatly reduces the steam consumption and waste water production. The advantages of lower carbon dioxide content. Liquid slag discharge is aimed at Lurgi furnace using mechanical grate dry ash to discharge slag. It overcomes the disadvantages of large amount of dry ash, huge energy consumption of equipment, and serious environmental pollution. Liquid slag discharger is used for discharge. Slag, so that the crushed coal slag gasifier ha...

AI Technical Summary

Problems solved by technology

The slag discharger is located at the bottom of the crushed coal slag gasifier, and the working environment is harsh. If the design of the slag discharger is not good, it is not only easy to be blocked by slag and iron, serious burning loss, short service life, but also inconvenient to disassemble and difficult to maintain. The shutdown of the furnace caused by it will cause great economic losses

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