Coking low-temperature waste heat comprehensive utilization system

Abstract

The invention discloses a coking low-temperature waste heat comprehensive utilization system which comprises a coke oven ascending pipe, a bridge pipe, a primary cooler main body, an electric oil trapand an ammonia distillation section, one side of the coke oven ascending pipe is connected with the bridge pipe; a gas collecting pipe is mounted on one side of the bottom end of the bridge pipe; a gas-liquid separator is arranged on one side of the gas collecting pipe; and a primary cooler body is arranged on one side of the gas-liquid separator, an electric oil trap is installed at the output end of the primary cooler body, an air blower is installed on the side, away from the primary cooler body, of the electric oil trap, a desulfurization section is connected to one side of the air blower, and a crude benzene section is connected to one side of the desulfurization section. According to the invention, the temperature of the circulating ammonia water is not influenced by low-temperaturecondensate, the maximum recycling of waste heat is ensured, the waste heat recovery efficiency of the system is improved, the cost investment of the system is effectively reduced, and the desulfurization effect of the system is enhanced.

Description

technical field [0001] The invention proposes a new application method for the current coking production process, and specifically relates to a coking low-temperature waste heat comprehensive utilization system. Background technique [0002] Coal coking, also known as coal high-temperature dry distillation, uses coal as a raw material, heats it to about 950°C in the coke oven under air-isolated conditions, produces coke through high-temperature dry distillation, and simultaneously obtains gas, coal tar and recovers other chemical products. A coal conversion craft. The temperature of the raw coal gas exported from the carbonization chamber is 650-700°C. Firstly, it is cooled to about 83°C through the riser pipe, bridge pipe, and gas collection pipe, and then cooled to 21°C by the primary cooler. Tar is removed by electric capture, and pressurized by a blower. Afterwards, desulfurization is carried out, and hydrogen sulfide and benzene are removed from the gas in the crude be...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a coking low-temperature waste heat comprehensive utilization system to solve the problems of poor waste heat recovery, low desulfurization efficiency and high cost input in the system proposed in the background technology

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