Recovery treatment system of coking waste gas

Abstract

The invention relates to a recovery treatment system of coking waste gas. The system comprises a plurality of storage tanks and a waste gas collection pipeline, an waste gas exhaust pipe is connectedbetween the storage tanks and the waste gas collection pipeline; and the recovery treatment system of the coking waste gas further comprises a nitrogen pressure stabilization device, a tank top safetydevice, a waste gas pressure adjusting device, a tank top pressure monitoring device and a main pipe oxygen content online monitoring and rapid cutting-off device. According to the system, closed recycling of waste gas in the coking zone storage tanks is realized; accurate control is carried out on each storage tank, so that the energy consumption is greatly reduced; the problems that the waste gas in storage tanks in an existing collecting system is mutually mixed, necessary online monitoring facilities are lacked and the like are solved; and the safety of the storage tanks and the waste gascollecting system are ensured, so that the waste gas inside the coking zone storage tanks is safely and effectively treated.

Description

technical field [0001] The invention relates to a coking waste gas recovery and treatment system, which belongs to the technical field of coking waste gas recovery and treatment. Background technique [0002] There are a large number of storage tanks for storing materials in the process of gas discharge and purification in the coking area. The materials in these storage tanks have strong volatility at storage temperature, and a certain amount of waste gas will escape. These exhaust gases are flammable, explosive, toxic, irritating, corrosive, and complex in composition. They not only cause serious pollution to the atmospheric environment, but also seriously affect the physical and mental health of employees. [0003] In the prior art, most of the waste gas in the coking area is directly discharged to the air through the discharge port of the storage tank. Even if the exhaust gas collection and treatment system is set up, it is simply to connect the exhaust gas outlets of e...

AI Technical Summary

Problems solved by technology

The main problems of this waste gas collection and treatment system are: 1. Due to the different types, characteristics and storage temperatures of the materials stored in each storage tank, simply connecting various storage tanks in series for waste gas collection will easily cause the waste gas in each storage tank to interact. 2. There is no online monitoring facility for the oxygen content of the exhaust gas, and it is impossible to detect the oxygen content of the exhaust gas in real time. When the oxygen content in the exhaust gas reaches a certain level, the exhaust gas may explode, and it will cause damage to the exhaust gas. Oxygen content in the gas discharge system has adverse effects, and even causes the electric catcher of the gas discharge system to trip, affecting the normal production of the gas refining system; 3. The pressure control system is too simple and rough, not accurate enough, and there is no pressure detection measure for the storage tank, which is easy Cause the storage tank to suck or expand

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