Metallurgy
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Coking production process mainly includes coal preparation → coking → gas purification → chemical product recovery and coke oven dust treatment.
Coal preparation process mainly includes coal receiving, storage, crushing, crushing and coal blending, which is the preparation process of coke oven raw materials. Automatic proportioning devices such as electronic belt proportioning scale have been widely used in coal blending.
Coking process mainly includes coal charging, pushing, coking and coke screening, in which coke oven is the main production device. To improve the automation control level of coke oven is of great significance to improve the output and quality of coke, extend the service life of coke oven and save energy. There are five types of coke oven control system: stable heating type, combustion chamber temperature control type, coking end point control type, heat balance control type and total heat control type.
Gas purification process control - gas purification process is to remove and recover ammonia, naphthalene, hydrogen sulfide, hydrogen cyanide, benzene and tar from coke oven gas, including interface control system of tar ammonia water separation tank, suction control system in front of exhauster, combustion control system of hot blast stove in ammonium sulfate unit, interface control system of extraction tower in phenol benzene extraction unit and ammonia water distillation Interface control system of ammonia distillation tower, crude benzene distillation unit.
The control system of chemical product refining process mainly includes: control system of adsorption tower of benzene hydrogenation unit, control system of combined tower of asphalt coke unit, control system of tubular heating furnace of asphalt coke unit, control system of incinerator and waste heat boiler of asphalt coke unit.