Method for controlling smoking during opening of ascending pipe of coke oven

Abstract

A method for controlling smoking during opening of an ascending pipe of a coke oven comprises the steps that: (1) air is introduced into an ascending pipe: an air introduction pipe is obliquely arranged on the ascending pipe at the top of a coke oven, and the lower end of the air introduction pipe is positioned at the lower part of the ascending pipe; a cover plate mechanism is arranged at the upper end opening of the air introduction pipe and comprises an insertion plate of a parallel double-plate structure, wherein one plate is a wedge-shaped plate, the other plate is a heat insulation plate, the wedge-shaped plate is used for cutting off the air introduction pipe, and the heat insulation plate is used for sealing an air introduction opening; and cylinder bodies of two electric cylinders are connected with the outer wall of the ascending pipe, and the ends of piston rods of the electric cylinders are connected with the wedge-shaped plate and the heat insulation plate; and (2) a coal feeding opening is uncovered online: a coal feeding opening online uncovering device is arranged to the side of the coke oven and wirelessly communicates with a coke pushing operation control system and receives an instruction of the coke pushing operation control system, and when the coal feeding opening online uncovering device operates to a carbonization chamber with a certain oven number, an oven cover of a certain coal feeding opening is opened through an uncovering mechanism; and in addition, the uncovering device and a furnace top coal charging car operate in a linkage mode, and safety interlocking and anti-collision measures are arranged.

Description

technical field [0001] The invention relates to coking technology, in particular to a method for controlling smoke when a riser pipe of a coke oven is opened. Background technique [0002] During the dry distillation process of coking coal in the coke oven, the volatile matter is continuously precipitated to become raw gas, which passes through the high-temperature refractory masonry and enters the bridge pipe to cool and then collects in the gas collecting pipe. Raw coal gas is mainly composed of multi-component hydrocarbons, which are cracked at high temperature to form carbon black, and the macromolecular components will condense and precipitate tar at low temperature, which is mixed with coal dust during the coal charging process, and in the coke oven body, riser pipe, etc. Graphite and sub-coke are deposited on the rougher parts, and if they accumulate to a certain extent, it will make it difficult to push coke and export raw gas. The formation of graphite in the cokin...

AI Technical Summary

Problems solved by technology

During the above-mentioned time difference, no air is introduced into the furnace, and the raw gas escapes directly without being burned, resulting in serious unorganized emissions of VOCs, and the visible pollution is very obvious, which has become a key point restricting the sustainable development of coking.

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