A Gasification Process Burner with Narrow Channel Jet Cooling

Abstract

The invention relates to a novel gasifying process nozzle with a function of spray cooling through narrow channels. The nozzle comprises a central gasifying agent channel, a fuel channel and an external gasifying agent channel which are coaxially and sequentially sleeved outside the central gasifying agent channel, and cooling water channels which are arranged between the central gasifying agent channel and the fuel channel, between the fuel channel of the external gasifying agent channel and outside the external gasifying agent channel, wherein each cooling water channel consists of a plurality of narrow channels. High pressure cooling water is increased in the narrow channels at a flow rate to enhance the cooling effect on the central gasifying agent channel, the fuel channel, the external gasifying agent channel and the metal wall of the water cooling channel by way of heat conduction and forced-convection heat transfer. High pressure cooling water is sprayed from the outlets of the narrow channels in form of high speed impact jet to spray and cool the outlets of the nozzle so as to effectively cool the outlets of the nozzle by way of forced-convection heat transfer and phase-change heat transfer. The nozzle provided by the invention overcomes the defect that a nozzle in the gasifying nozzle technology in the prior art is poor in cooling effect and short in service life.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a gasification process burner with narrow channel jet cooling. technical background [0002] Coal is an important energy source, but for a long time, the use of coal has been accompanied by serious environmental pollution. In recent years, people have paid more and more attention to clean coal technology aimed at reducing pollution emissions and improving utilization efficiency; coal gasification technology, as one of the coal processing and conversion technologies, is considered to be one of the most efficient and clean clean coal technologies. [0003] Coal gasifier is a device that converts fossil fuels (powdered coal, petroleum, natural gas, etc.) into coal gas, and is widely used in chemical industry, nitrogen fertilizer, gas, combined power generation and other fields. In view of our country's poor oil, little gas, and more coal resources, the gasification fuel i...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problems existing in the prior art, the object of the present invention is to provide a gasification process burner with narrow channel jet cooling, which overcomes the poor cooling effect of the burner in the prior art gasification burner technology, the short service life, the fog Defects such as chemicalization and mixing properties cannot achieve good results at the same time

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