Automatic cleaning coke oven raw coke oven gas waste heat recovery heat exchange tube tar and carbon deposition device

Abstract

The invention discloses an automatic cleaning coke oven raw coke oven gas waste heat recovery heat exchange tube tar and carbon deposition device. According to the technical characteristics, the innerwall of a heat exchange pipe is of a thread type groove structure, a rotating rod is installed on a center line of the heat exchange pipe, the upper end of the rotating rod extends out of an upper end cover of the heat exchange pipe to be connected with a driving device outside a shell, an ash removing head clamping rod is connected to the lower end of the rotating rod, and ash removing heads areinstalled at the two ends of the ash removing head clamping rod and are in clearance fit with a thread type groove in the inner wall of the heat exchange pipe; and the ash removing head clamping rodand the ash removing heads are driven by the rotating rod to do spiral rotation reciprocating motion along the thread type groove in the inner wall of the heat exchange pipe, the ash removing heads inrotation motion remove tar and deposition carbon attached to the inner wall of the heat exchange pipe, and meanwhile, disturbance is applied to raw coke oven gas. The device solves the problem that heat exchange efficiency reduction caused by tar congealing and carbon deposition on the inner wall of a rising pipe, raw coke oven gas waste heat can be recovered to the largest degree, and it can beguaranteed that the heat exchanger continuously and normally works under the complex working conditions.

Description

technical field [0001] The invention belongs to the technical field of recovery and utilization of raw gas waste heat resources in the coking process, and in particular relates to a device capable of automatically cleaning tar and carbon deposits in coke oven waste gas waste heat recovery rising pipes (ie, heat exchange pipes). Background technique [0002] The waste heat generated in the coking production process is large and has high energy value, which has great recycling value. At present, there are mainly two ways to recover the waste heat of coke oven raw gas: (1) replace the rising pipe of coke oven with a water-jacketed rising pipe, and recover the waste heat through the heat exchange between water and raw gas in the rising pipe; (2) convert the waste After the gas is exported, the waste heat recovery device is used for centralized recovery. Among them, the water jacketed pipe waste heat recovery method has the risk of cracking, water leakage and air leakage of the ...

AI Technical Summary

Problems solved by technology

[0003] Although the method of using waste heat recovery device to centrally recover the waste heat of raw gas is very efficient, the current conventional waste heat recovery device can only be used for relatively clean waste gas waste heat recovery, and coke oven raw gas will generate tar and carbon deposits after heat exchange and cooling , it is easy to block the exhaust gas channel of the waste heat recovery device

[0004] Therefore, the existing raw gas waste heat treatment process not only cannot make full use of the waste heat, but also wastes a large amount of energy media such as circulating ammonia water, circulating water for cooling the primary gas cooler, and electric energy during the treatment process, which greatly wastes resources. , is not conducive to the sustainable development of enterprises

Images