A small flue of regenerator with variable section

Abstract

The invention relates to a variable-section sole flue of a regenerative chamber. The upper part of the variable-section sole flue is connected with a chute through a lattice brick; an adjustable grate brick is arranged between the sole flue and the lattice brick; the variable-section sole flue is characterized in that a grate baffle brick of the sole flue protrudes on the lower surface of the grate brick layer; a local side wall lining brick protrudes on the surface of a side wall lining brick layer; the bottom lining brick of the flue is an inclined plane; the grate baffle brick, the local side wall lining brick and the bottom lining brick are respectively arranged, or arranged in a combination manner or jointly arranged, so that the same sole flue has different section area along the direction from a furnace end to a center partition wall; the sole flue is optimized into a variable-section airflow channel; by a mode of combining fixed adjustment of the variable-section sole flue and variable adjustment of the grate brick, the supply amount of a lean gas or a mixed gas and air for heating is finely adjusted; the uniformity of airflow distribution in the regenerative chamber is improved; the production quantity of nitrogen oxides is reduced; green coke on the furnace end can be avoided.

Description

technical field [0001] The invention relates to a small flue structure of a regenerator, in particular to a small flue with variable cross-section. Background technique [0002] With the development of the coking industry, the environmental protection requirements of the national policy for the coking industry are getting higher and higher. Emission restrictions are getting stricter. [0003] At present, domestic coke ovens generally adopt the structural mode of compartmentalized regenerator and adjustment of the lower part of the coke oven. The regenerator is located in the lower part of the coke oven, and its main function is to recover the heat of the coke oven combustion waste gas and preheat the gas. The brick part is divided into multiple small regenerators. The small flue is an overall long and fixed cross-section airflow channel, which is separated and adjusted by grate bricks between the checker bricks. The cross-sectional area of ​​the air flow of the adjustabl...

AI Technical Summary

Problems solved by technology

This type of structure is simple, but the disadvantage is that the adjustment workload is large, and the deposition of dust such as blast furnace dust causes the opening of the adjustment hole of the grate brick, while the dust pollution is heavy, and the working environment of the workers is poor.

In addition, in production, the temperature of the burner flue is low, and the burner is prone to coke, and the amount of smoke from the burner is large when pushing the coke, which causes serious environmental pollution.

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