Process gas afterheat recovery device of coking carbonization chamber furnace top and heat-removing element

Abstract

The invention provides a process gas afterheat recovery device of a coking carbonization chamber furnace top and a heat-removing element. The heat-removing element comprises a plurality of heat pipes, wherein the heat pipes are filled with a working solution, annularly arranged and connected by an annular fin screen to form an annular peripheral pipe fin screen; the afterheat recovery device comprises the annular peripheral pipe fin screen arranged on the coking carbonization chamber furnace top and a steam pocket; a process air inlet and a process air outlet are respectively arranged at the upper end and the lower end of the annular peripheral pipe fin screen, and the process air inlet is abutted with the process air outlet on the coking carbonization chamber furnace top; the upper end and the lower end of each heat pipe of the annular peripheral pipe fin screen are respectively communicated with an upper collection coil and a lower collection coil; and the upper collection coil and the lower collection coil are respectively connected with heat-releasing pipes placed in the steam pocket through pipelines to form a sealed circulation loop of the work solution in each heat pipe of the annular peripheral pipe fin screen. In the invention, a great deal of process gas afterheat of the coking furnace top, which has high temperature and is rich in recyclable substances and discharged from the top of the carbonization chamber, can be effectively recycled, and the temperature is reduced from 800 DEG C to over 450 DEG C at the coking point, thereby the invention is safe and environment-friendly, saves energy, and is benefit for greatly reducing operating cost and expenses.

Description

technical field [0001] The invention relates to a heat exchanging element, in particular to a heat-taking element including a heat pipe. [0002] The present invention also relates to a waste heat recovery device for recovering the waste heat of the process gas at the top of the coking chamber composed of the above-mentioned heat-taking elements. Background technique [0003] At present, most of the coking process adopts the traditional process. During the process, the high-temperature process gas generated by pyrolysis is discharged from the top of each carbonization chamber. The process gas cools down, and then enters the next process. For example, a horizontal tube primary cooler for cooling coke oven gas disclosed in 200710051923. The lower section of the spray pipe is provided with a broken tray above the lower section of the spray pipe to control the condensate and spray liquid in the upper section of the primary cooler to be directly drawn out without passing through...

AI Technical Summary

Problems solved by technology

However, as mentioned above, none of the existing heat extraction elements and heat extraction devices can be conveniently and effectively applied to the waste heat recovery of the process gas in the coking chamber.

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