Alternating pressure coke extraction control device and method

Abstract

An alternating pressure coke extraction control device and method for a gas purifier includes an alternating pressure coke extraction device body and a control system. The alternating pressure coke extraction device body includes a buffer tank, a coke-locking tank, and a coke-locking separator which are connected successively. A buffer tank inlet valve, a coke-locking tank inlet valve and a coke-locking tank discharge valve are installed at the discharge ports of the gas purifier, the buffer tank and the coke-locking tank respectively. A detergent supplement line is connected to the inlet pipeline of the buffer tank. A buffer tank balance line is installed between the gas purifier and the buffer tank. A coke-locking tank balance line is installed between the buffer tank and the coke-locking tank. The coke-locking tank is also connected to the coke-locking separator through a pressure relief pipeline. A gas source is connected with the coke-locking tank passes through a pressurizing pipeline. The alternating pressure coke extraction control method has high sequential control accuracy, high execution efficiency and a low error rate, greatly reduces the operation intensity, improves the reliability of a process flow, and realizes the automatic, stable, and safe alternating pressure coke extraction of the gas purifier.

Description

technical field [0001] The invention relates to a coke discharge control device and method for a gas purifier, in particular to an alternating pressure coke discharge control device and method for a gas purifier Background technique [0002] Coal is pyrolyzed and gasified to produce gas, coke fines and tar products. Pyrolysis gas contains carbon monoxide, hydrogen, coal tar gas, water vapor, dust, ammonia, benzene hydrocarbons, NO X , hydrogen sulfide, cyanide, etc., the composition is complex, the temperature is high, and the purification and treatment are difficult. In order to meet environmental protection requirements and maximize the added value of the product, this crude gas containing impurities must undergo a strict purification process to extract coal tar, naphthalene, anthracene and crude benzene, and remove NO X , hydrogen sulfide, and cyanide, it is considered a qualified gas product. [0003] There are usually two technical routes for the gas purification pro...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a device for realizing coke discharge of the gas purifier in the online state, which can effectively reduce the viscosity of the liquid pool at the bottom, and effectively solve the alternating pressure of the gas purifier that plagues the blockage of the gas purifier of the coal chemical plant. Coking control device and method

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