Integrated water/oil/tar/coal slurry process nozzle with gas film protection function

Abstract

The invention discloses an integrated water / oil / tar / coal slurry process nozzle with a gas film protection function. The integrated water / oil / tar / coal slurry process nozzle is of a sleeve-type structure and sequentially comprises a nozzle cooling water outer pipe, a nozzle cooling water inner pipe, an outer epoxy pipe, a gas film oxygen pipe, a coal slurry pipe and a central oxygen pipe from the outermost layer to the innermost layer; an ignition rod is arranged in the central oxygen pipe, and the length of the gas film oxygen pipe can be larger than the length of the outer epoxy pipe and can also be 1 / 2 smaller than the length of the outer epoxy pipe; and the ignition end of the nozzle is in a necking shape, and the outlet end close to the central oxygen pipe is provided with an ignitionrod rotational flow support for supporting the front end of the ignition rod. Through isolation of different channels, direct contact friction between water / oil / tar coal slurry and the inner wall faces of the channels can be greatly reduced, thus the protection effect is achieved, and the service life of the nozzle is greatly prolonged; and the ignition rod rotational flow support is adopted, theaxial speed of the water / oil / tar coal slurry and a central oxygen mixing medium after internal mixing is decreased, the axial speed of the mixing medium is increased, the water / oil / tar slurry and central oxygen are internally mixed more uniformly, and the atomization performance of the nozzle is improved.

Description

technical field [0001] The invention relates to coal slurry gasifier equipment, in particular to an integrated water / oil / coke / coal slurry process burner with gas film protection. Background technique [0002] At present, the gasifiers of the coal-water slurry pressurized gasification process are mainly divided into cold fireplaces and hot fireplaces. For a hot fireplace, it is generally necessary to use the start-up burner to bake the furnace when starting up. Under the heat storage of the furnace refractory material, when the temperature of the furnace reaches above 800°C, the start-up burner is removed and replaced with a process burner. Burner, the high temperature of the furnace makes the coal-water slurry sprayed from the process burner ignite. For cold fireplaces, due to the heat absorption effect of the water-cooled wall, heat cannot be stored in the form of an oven when starting up, and it is necessary to use an integrated burner integrating ignition and technology ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated water / oil / coke / coal slurry process burner with gas film protection, which can be used to process a variety of materials, including coal water slurry, water coke slurry, oil coal Slurry, oil coke slurry, and slurry made of water, oil, coal, and coke (hereinafter referred to as water / oil / coke / coal slurry), its structural design takes the center of the central oxygen channel as the axis, and outwards are coal slurry channels, Air film oxygen channel, outer epoxy channel, cooling water inner channel, and cooling water outer channel are separated by different channels, which can greatly reduce the direct contact friction between water / oil / coke slurry and the inner wall of water / oil / coke slurry channel, It plays the role of protecting the burner, greatly prolonging the service life of the burner, and solving the problem of short life of the burner in the current practical application process; at the same time, the swirl support of the ignition rod is designed to reduce the water / oil / coke slurry after internal mixing The axial velocity of the mixed medium with the central oxygen increases the axial velocity of the mixed medium, making the water / oil / coke slurry mixed with the central oxygen more uniformly, and improving the atomization performance of the burner

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