Film type wall sealing dry coke quenching waste heat boiler

Abstract

The invention relates to a residue thermal boiler sealed with the film wall including the upright column, the beam, the steeve, the film wall hearth, the ceiling pipe, the condenser pipe, the superheater, the evaporator, the coal economizer and boiler outlet. The film wall hearth is suspended on the beam by the steeve. The condenser pipe, the superheater, the evaporator are set in the film wall hearth from up to down. The hearth is enclosed by the front film wall, the left film wall, the back film wall and the right film wall. The superheater and the evaporator are suspended by the ceiling pipe which is suspended on the beam by the steeve. The part which the superheater and the evaporator pass the film wall is sealed by the ripple expanding structure. The coal economizer top and the lower end of film wall hearth are connected and sealed by the expanding node; the lower end of coal economizer is connected to the boiler outlet by the expanding node. The invention has the good sealing, antiwear and heat expansion character, also it works stable.

Description

technical field [0001] The invention relates to a waste heat boiler, in particular to a dry quenching coke waste heat boiler with a membrane wall seal. It is matched with the dry coke quenching device used in the steelmaking plant to use the high temperature waste heat flue gas produced by the dry coke quenching device to generate steam for the generator to generate electricity. It belongs to the technical field of power equipment. Background technique [0002] The dry coke quenching technology is to discharge the red hot coke produced by the coke oven in the steelmaking plant with a temperature of about 1000 ℃ and put it into the coke tank car. The CDQ pre-storage room, after a certain period of time, it goes down to the coke quenching room, and the inert circulating gas N 2 (about 180°C) enter the coke quenching chamber through the blower device to exchange heat with the hot red coke in reverse flow, extinguish the red coke, and pass the heat of the red coke through the ...

AI Technical Summary

Problems solved by technology

[0008] 5) Due to the negative pressure at the flue gas inlet and the severe wear of the coke powder particles on the heating surface, the operation stability of the waste heat boiler is not high

[0010] 1. The heating surface is supported by the furnace wall, and the thermal expansion performance is poor;

[0011] 2. Poor sealing, serious air leakage and low boiler efficiency

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