Control method of header system coke oven flue gas recovery system

Abstract

The invention discloses a control method of a header system coke oven flue gas recovery system. The control method comprises the following steps: 1, discharging flue gas generated by a coke oven group into a boiler group for waste heat recovery treatment; 2, the flue gas treated by the boiler group is gathered in a flue gas main pipe through a flue gas inlet; and 3, the flue gas gathered in the flue gas mother pipe is shunted to each desulfurization device through each flue gas outlet to be subjected to desulfurization treatment until reaching the standard, and then is discharged. The flue gas header system is innovatively introduced for flue gas waste heat recovery and desulfurization treatment of the coke oven, and when one boiler group or desulfurization device needs to be overhauled, other boiler groups and desulfurization devices can still continue to operate, so that flue gas generated by other coke oven groups can be effectively treated in time, and the energy consumption is reduced. And the defects in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of heat recovery coke ovens, in particular to a control method for a coke oven flue gas recovery system of a main tube. Background technique [0002] At present, with the progress and development of society, people's awareness of ecological environment protection has increased, and at the same time, higher requirements have been put forward for coke oven flue gas waste heat recovery and desulfurization systems. Such as figure 1 As shown, in the prior art, the flue gas produced by two of the four coke ovens is usually collected into one flue gas pipe, and the flue gas produced by the remaining two coke ovens is collected into another flue gas pipe, and finally the two flue gas The gas pipes are merged into the same waste heat boiler and desulfurization system. When the waste heat boiler or desulfurization system is overhauled, the flue gas is directly discharged from the high-temperature chimney through the...

AI Technical Summary

Problems solved by technology

When the waste heat boiler or desulfurization system is overhauled, the flue gas is directly discharged from the high-temperature chimney through the bypass pipe, but the sulfur content of the flue gas without desulfurization is as high as 800-1200mg / m 3 , direct discharge not only causes great pollution to the surrounding environment, but also wastes a lot of waste heat resources, which is contrary to the current environmental protection requirements

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