Raw coke over gas riser residual heat recovery device

Abstract

The invention relates to a raw coke over gas riser residual heat recovery device, which belongs to the technical field of heat energy recycles. The device comprises an upper header and a lower header which are surrounded outside the inner wall of a raw coke over gas riser, wherein the upper header and the lower header inwards lead out a group of separate type heat pipe heat-absorbing ends which pass through the inner wall of the raw coke over gas riser and communicate the upper header with the lower header respectively, and simultaneously the upper header and the lower header are communicated with two ends of a separate type heat pipe heat-releasing end respectively through connecting pipelines upwards, and the separate type heat pipe heat-releasing end is positioned in a heat exchange steam drum. The recovery device achieves fast recovery of heat, is convenient to arrange by adopting a separate type heat pipe, and can ensure that the wall temperature of the heat pipe is higher than the tar dew point of the raw coke over gas by improving the steam producing pressure, so the problem of coking is not generated; and besides, with small quantity of the working medium inside the separate type heat pipe, the heat pipe can avoid the leakage of the steam-water mixture in the entire steam drum into a coking chamber like a water jacket even if being destroyed, thereby preventing safety accidents and ensuring the safe operation of a coke oven.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a coke oven raw gas riser waste heat recovery device, which belongs to the technical field of heat energy recovery and utilization. Background technique [0002] The iron and steel industry is a high-input, high-output industry, as well as a high-energy-consumption industry. In recent years, with the increasingly tense energy supply, the domestic and foreign iron and steel industries have paid more and more attention to the application of new energy-saving technologies. is one of them. As far as the applicant knows, this technology has not been successfully applied in iron and steel enterprises, and many iron and steel enterprises still use the traditional way of spraying ammonia water to cool the raw gas, resulting in a large amount of waste heat resources that cannot be recycled and lost in vain. [0003] In 1971, some iron and steel enterprises first adopted the riser jacket he...

AI Technical Summary

Problems solved by technology

These are not separated from the basic structure of the jacketed heat exchanger, so there are still problems of coking at the root of the jacket and leakage of the water jacket. In severe cases, it will cause the steam drum water to leak into the carbonization chamber and cause a safety accident.

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