Cokery raw gas riser pipe high-efficiency waste heat recovery device

Abstract

The invention relates to a cokery raw gas riser pipe high-efficiency waste heat recovery device which comprises an outer pipe, an upper connecting pipe, a lower connecting pipe, an upper flange and a lower flange, wherein a heat insulating material is respectively annularly arranged on the inner walls of the upper connecting pipe, outer pipe and lower connecting pipe; a plurality of outer annular heat exchange tubes are arranged in the heat insulating material from top to bottom; an inner heat exchange tube is arranged on the inner ring of the outer heat exchange tubes in the outer tube body; the orifice on one end of the outer heat exchange tube and the orifice on one end of the inner heat exchange tube are merged and connected to an outlet pipe; the orifice on the other end of the outer heat exchange tube and the orifice on the other end of the inner heat exchange tube are merged and connected to an inlet pipe; and the inlet pipe and outlet pipe are respectively provided with a remote pressure monitoring alarm device port. The device is simple in structure; the inner heat exchange tube is added to increase the heat exchange area and enhance the waste heat recovery rate, so that the overall waste heat recovery efficiency is greatly enhanced; and the remote pressure monitoring alarm device port is added to prevent the cokery accidents caused by leakage of the heat exchange tube.

Description

technical field [0001] The invention relates to the field of waste heat heat exchange equipment, in particular to a high-efficiency waste heat recovery device for coke oven raw gas rising pipes. Background technique [0002] The raw gas produced by the coke oven enters the bridge tube through the riser pipe to cool and then goes to the gas collection pipe and the chemical recovery system to recover the hot water or steam produced by the heat in the coke oven raw gas to achieve energy saving and emission reduction. The above process requires coke oven raw gas The riser pipe is completed by a high-efficiency waste heat recovery device. At present, there is a problem of leakage of heat exchange tubes in the existing coke oven raw gas riser waste heat recovery device, which may lead to leakage of steam drum water into the coke oven carbonization chamber and cause safety accidents. Contents of the invention [0003] In view of the above existing problems, the applicant has mad...

AI Technical Summary

Problems solved by technology

At present, there is a leakage problem of the heat exchange tube in the waste heat recovery device of the rising pipe of the coke oven raw gas. In severe cases, the steam drum water leaks into the coke oven carbonization chamber and causes a safety accident.

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