| 摘要 |
PURPOSE: A control system of coke oven gas using a booster is provided to prevent large accident generated when pulsation is generated by accidental pressure difference between coke oven gas supply side and load side so that flame is backfired from the load side to the coke oven gas supply side. CONSTITUTION: The control system comprises a holder(1) for temporarily storing coke oven gas; a pressure increasing part comprising boosters(7,8,9), front pressure increase control valves(10,11,12) and rear pressure increase control valves(4,5,6) installed between the holder(1) and load side; an anti-surging valve(13) installed on direct connecting line between the holder(1) and the load side; first and second pressure transmitters(15,3) for detecting input coke oven gas pressure and output coke oven gas pressure respectively at input line and output line of the pressure increasing part; a pressure increase controller(14) for generating pressure increase control signal for controlling pressure increasing ratio according to detected pressure values of the first pressure transmitter(15) and detected signal values of the second pressure transmitter(3) through pressure controller(2); a signal generator(16) for generating valve opening control signal having a ratio set when the inputted detected signal values are the same or less than a certain pressure by inputting the detected signal values of the second pressure transmitter(3); and a switch device(17) for supplying the selected control output values to the anti-surging valve(13) by selecting control output values of the signal generator(16) or the pressure increase controller(14) according to control output values of the signal generator(16).
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