A joint gasification nozzle of coal liquefaction residue and coal water slurry and its application

Abstract

The invention discloses a coal liquefaction residue and coal water slurry combined gasification nozzle which comprises a coal liquefaction residue pipe, a steam circular pipe, an inner circular oxygen pipe, a coal water slurry circular pipe, an outer circular oxygen pipe, a water-cooling circular pipe and a coal liquefaction residue and steam mixing chamber, wherein the coal liquefaction residue pipe, the steam circular pipe, the inner circular oxygen pipe, the coal water slurry circular pipe, the outer circular oxygen pipe and the water-cooling circular pipe are coaxially arranged from inside to outside in sequence; one end of the coal liquefaction residue and steam mixing chamber is communicated with the tail end of the coal liquefaction residue pipe, and the other end of the mixing chamber is communicated with a coal liquefaction residue and steam nozzle orifice; the wall of the mixing chamber is provided with a steam nozzle orifice which is communicated with the steam circular pipe; the tail end of the steam circular pipe is closed; the tail end of the coal water slurry circular pipe is communicated with the coal water slurry nozzle orifice; the tail end of the inner circular oxygen pipe is communicated with the inner circular oxygen nozzle orifice; and the tail end of the outer circular oxygen pipe is communicated with the outer circular oxygen nozzle orifice. By using the gasification nozzle, combined gasification of viscous heavy fuels such as molten coal liquefaction residues, high-temperature liquid-state heavy oil, residual oil and the like and coal water slurry can be realized.

Description

technical field [0001] The invention relates to a gasification nozzle, in particular to a gasification nozzle used in a coal-water slurry gasification furnace. Background technique [0002] The entrained bed coal-water slurry gasifier is an important coal gasification equipment, in which the gasification raw material is a coal-water slurry-like fluid, the gasification raw material and oxygen are sent into the gasifier through the gasification nozzle, and the gasification process is carried out in the gasifier. Thorough mixing, combustion and gasification reactions. Coal-water slurry gasification technology was industrialized in my country in the 1980s. Up to now, dozens of coal-water slurry gasification furnaces are in operation for the production of synthetic ammonia, synthetic methanol, synthetic dimethyl ether and coal indirect liquefaction. Raw material gas produced by oil and MTO. In the entrained bed coal-water slurry gasification process, the gasification nozzle is o...

AI Technical Summary

Problems solved by technology

When the gasification raw material is thermally melted coal liquefaction residue, the existing coal-water slurry gasification nozzle cannot obtain a good gasification effect

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