Temperature control device of flue gas desulfurizing and acid-making hot blast stove and control method

Abstract

A temperature control device of a flue gas desulfurizing and acid-making hot blast stove comprises a programmable controller, wherein a coke oven gas pressure regulating valve, a coke oven gas pressure sensor, a coke oven gas flow sensor and a coke oven gas flow regulating valve are mounted on a coke oven gas inlet pipeline; a combustion air flow sensor and a combustion air flow regulating valve are mounted on a combustion air inlet pipeline; a temperature sensor and a pressure sensor are mounted on the flue gas desulfurizing and acid-making hot blast stove; and the programmable controller exchanges signals with the coke oven gas pressure regulating valve, the coke oven gas pressure sensor, the coke oven gas flow sensor and the coke oven gas flow regulating valve on the coke oven gas inlet pipeline, exchanges signals with the combustion air flow sensor and the combustion air flow regulating valve on the combustion air inlet pipeline, and exchanges signals with the hot blast stove temperature sensor and the hot blast stove pressure sensor on the flue gas desulfurizing and acid-making hot blast stove. The temperature control device of the flue gas desulfurizing and acid-making hot blast stove can quickly and accurately control the temperature and the pressure of the hot blast stove, so that the hot blast stove can meet flue gas desulfurizing and acid-making requirements of a sintering machine.

Description

Technical field: [0001] The invention relates to a temperature control process of a hot blast stove for flue gas desulfurization and acid production, and belongs to the technical field of detection and control. Background technique [0002] Analysis of SO adsorbed in activated carbon in the process of flue gas desulfurization of sintering machine 2 Hot air at a constant temperature is required, which is obtained by burning coke oven gas and combustion-supporting air in proportion, and meets the temperature requirements of the desorption tower. However, the pressure of coke oven gas, combustion-supporting air, and temperature of coke oven gas are unstable, with many disturbances and mutual coupling. The control system in the prior art cannot solve the problem that the online temperature detection of the hot blast stove is too lagging, nor can it solve the problem of temperature The interaction between regulation and pressure regulation, therefore, the control precision of th...

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Problems solved by technology

However, the pressure of coke oven gas, combustion-supporting air and temperature of coke oven gas are unstable, with many disturbances and mutual coupling. The control system in the prior art cannot solve the problem that the online temperature detection of the hot blast stove is too lagging, nor can it solve the problem of temperature The interaction between regulation and pressure regulation, therefore, the control precision of the dynamic regulation process of the system is low, which cannot meet the requirements of constant temperature hot air

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