Self-moving heat removal type smoke exhaust pipeline for calcining furnace

Abstract

The invention discloses a self-moving heat removal type smoke exhaust pipeline for a calcining furnace, and belongs to the field of smoke exhaust. The self-moving heat removal type smoke exhaust pipeline for the calcining furnace comprises a pipeline body, wherein an inner heat conduction layer is embedded in the pipeline body; a heat removal cavity is dug in the pipeline body; and through the arrangement of a heat reciprocating rod and a bidirectional heat conduction rod on the heat reciprocating rod, when smoke is exhausted, a bidirectional heat bag performs bidirectional expansion deformation at the high temperature, and when the bidirectional heat conduction rod continuously moves back and forth in the inner heat conduction layer, on one hand, the bidirectional heat bag acts on an inner moving layer, the inner moving layer continuously and circularly protrudes to achieve the dynamic process of deformation recovery, and therefore the amount of smoke particles attached to the inner moving layer is effectively reduced, compared with the prior art, the cleaning difficulty and frequency of the pipeline are obviously reduced, and on the other hand, the exchange speed of heat carriedin the smoke and condensate water in the heat removal cavity can be effectively increased, the cooling efficiency of the smoke is higher, and potential safety hazards are obviously reduced.

Description

technical field [0001] The invention relates to the field of flue gas discharge, and more specifically relates to a flue gas exhaust pipe for a self-moving heat removal type calciner. Background technique [0002] Calciner is a kind of thermal equipment for heat treatment of carbon raw materials (such as coke, anthracite, etc.) at high temperature to improve the performance of raw materials. Equipment for iron making, recovery of rare metals, catalyst production, environmental improvement, and production of specialty chemicals. The characteristics of carbon raw materials determine the characteristics of calcination. [0003] Since the main component of carbon raw materials is carbon, which is flammable, direct contact with air should be avoided during the entire calcination process to reduce oxidation losses. It can be seen that indirect heating is suitable for calcination, and a reducing atmosphere should be established as much as possible during direct heating, and the a...

AI Technical Summary

Problems solved by technology

The volatile matter is gradually discharged during the calcination process. If it can be used, considerable heat can be recovered and the heat consumption of calcination can be reduced; but if it is not used properly, it will also cause blockage and damage to equipment and the disadvantages of polluting the environment.

[0004] Due to the high temperature of the calcination furnace, the temperature of the flue gas produced by its calcination is also very high, resulting in the threat of explosion and a large safety hazard. Gas, the flue gas containing solid particles is directly discharged into the air, which can easily lead to an excessively high PM2. During the initial cooling, solid smoke particles will adhere to the inner wall of the pipe, which will increase the cleaning frequency of the smoke exhaust pipe and increase the workload of the staff.

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