Adjustment Control Scheme and Application of a Gas Mixer
The heat storage oxidation installation is adopted to treat the VOCs exhaust gas in the silo gas of polyolefin installation in-depth,the emission standard is met.The process of the heat storage oxidation installation and gas mixer are introduced.The type selection scheme of exhaust gas control valve and the total hydrocarbon analyzer,and mixed gas concentration control scheme of the mixed gas are proposed.The reasons of the easily occurred fault for the instrument in the heat storage oxidation installation are investigated.The optimized interlock control scheme of the gas mixer is put forward.The application of the optimized control scheme can ensure the total hydrocarbon is equal before and after gas mixed.The flow of high-concentration exhaust gas can be accurately controlled according to the flow of low-concentration exhaust gas.
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