Cold-side adjustment method for temperature and pressure of high temperature flue gas system of heat recovery coke oven

Abstract

The invention relates to a method and a device for adjusting the temperature and the pressure of a high temperature flue gas pipeline of a heat recovery coke oven (also called non-recovery coke oven when the residual heat of the coke oven flue gas is not recovered), which achieve the automatic adjustment and control of the pressure and the temperature of a high temperature flue gas system by adjusting an air suction port arranged on the high temperature flue gas pipeline operated by negative pressure and adjusting the air suction volume of the high temperature flue gas system, wherein when a cold end adjusting device is adopted, the method for adjusting the pressure by changing the opening of a cutting flashboard on the original high temperature flue gas pipeline can be replaced completely, and the adjustment is convenient and quick. The method and the device are suitable for the high temperature gas systems of various newly-constructed, reconstructed and expanded heat recovery coke ovens, have simple process and device structures and convenient operation, reduce the labor intensity of workers, can achieve automatic adjustment, improve the production automation level of the heat recovery coke oven, and prevent environmental pollution.

Description

Technical field [0001] The invention relates to a method for adjusting the temperature and pressure of high-temperature flue gas of heat recovery coke ovens (also called non-recovery coke ovens), which is mainly applied to the high-temperature flue gas systems of various heat recovery coke ovens newly built, rebuilt and expanded. Background technique [0002] During the production and use of the heat recovery coke oven, the high temperature flue gas (temperature between 850°C and 1200°C) generated by the heat recovery coke oven reaches the waste heat boiler and subsequent sections through the high temperature flue gas pipeline (or is released into the atmosphere through the accident chimney). In order to ensure the safe and stable production of heat recovery coke ovens and waste heat boilers, it is necessary to ensure that the temperature and pressure of the high-temperature flue gas at various parts of the system are within a stable range. During normal production, the entire sy...

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Problems solved by technology

[0004] The high-temperature flue gas generated in the heat recovery coke oven carbonization chamber contains combustible components. In order to ensure the safe production of the subsequent sections or minimize the environmental pollution after being released through the chimney, and make full use of its heat, before reaching the subsequent sections or before being released, It should be completely burned. The heat recovery coke ovens currently designed are all burned in the carbonization chamber and the flue. Due to the concentrated release of heat, the burning loss of the coke is relatively large. If the heat release process can be changed to a relatively slow process can reduce coke burning loss

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