Flue gas purification system involving multiple operations and control method thereof

Abstract

The invention discloses a flue gas purification system involving multiple operations and a control method thereof. An intensive analysis sub-system is arranged in a sintering process and is integrallyconnected with an adsorption sub-system of the sintering process, so that activated carbon circulated between the intensive analysis sub-system and the sub-system of the sintering process passes through a conveyor set to complete the circulation, extra conveying equipment is not needed, transportation resources are saved, and influence of the transportation process on system operating is reduced.The intensive analysis sub-system comprises a feed dividing device, the activated carbon is allocated to the adsorption sub-system of the sintering process through first feed dividing equipment so asto make activated carbon flow of the intensive analysis sub-system be balanced with activated carbon flow of the adsorption sub-system of the sintering process and other adsorption sub-systems, by arranging working parameters of the intensive analysis sub-system feed device, discharging device and feed dividing device, it is achieved that the balance relationship between the intensive analysis sub-system and the adsorption sub-systems is accurately controlled at one side of the intensive analysis sub-system.

Description

technical field [0001] The present application relates to the technical field of gas purification, in particular to a flue gas purification system involving multiple processes and a control method thereof. Background technique [0002] There are many processes in iron and steel enterprises that can generate flue gas emissions, such as sintering process, coking process, blast furnace ironmaking process, converter or electric furnace steelmaking process, etc. The flue gas emitted by each process contains a large amount of dust, SO 2 and NO X and other pollutants. Usually, enterprises use activated carbon flue gas purification technology to remove SO in flue gas 2 and NO X , so as to realize the clean emission of corporate exhaust gas. [0003] figure 1 An activated carbon flue gas purification system is shown, and the system includes: an adsorption subsystem 100 for purifying raw flue gas and discharging polluted activated carbon, an analysis subsystem 200 for activating...

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Problems solved by technology

[0006] Secondly, the centralized analysis subsystem needs to centrally activate the polluted activated carbon discharged from multiple adsorption subsystems. Due to the different scales of the multiple adsorption subsystems, the discharge flow rate of the polluted activated carbon is also different. In addition, the centralized analysis sub-system The polluted activated carbon processed by the system comes from the adsorption subsystems installed in different processes. Factors such as equipment failures and production plan adjustments will cause fluctuations in the stability of the quantity of activated carbon output by the adsorption subsystems in different processes. Therefore, how to control the concentration of analytical components? The balance between the system's treatment capacity for polluted activated carbon and the discharge of activated carbon from multiple adsorption subsystems is also a technical problem that is difficult for those skilled in the art to overcome

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