| 摘要 |
PURPOSE:To always permit appropriate control of air flow to be fed to a wet oxidizing device by measuring continuously oxygen concn. in the exhaust air discharged after completion of the reaction and feeding back the measured results to a butterfly valve provided before a compressor for feeding air. CONSTITUTION:When desulfurizing liquid of coke oven gas, several urban waste water or industrial waste water is oxidized with air at high temp. and under high pressure in a wet oxidizing device 3, the concn. of oxygen in the exhaust gas discharged after completion of the reaction is measured continuously, and the measured results are fed back to a butterfly valve 6 provided before a compressor for feeding air to control thus the amt. of the air to be fed. Thus, the amt. of the air to be fed to the wet oxidizing device is always controlled appropriately, and the oxidation efficiency is held stably and the power of the air compressor can be saved. Accordingly, stabilization of operation is realized by this method, and an economically rational process is provided.
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