A case analysis of the application of alkali white mud to the deacidification of flue gas in semi-dry waste incineration system
Aiming at the problems such as high cost and environmental pollution caused by the use of hydrated lime as flue gas deacidifier in the current waste incineration power plants,and realizing the leap of incineration flue gas purification from resource-consumptive pollution treatment mode to"treating waste with waste",a waste incineration power plant was taken as a case in this study.The removal efficiency of HC1 and SO2 from flue gas by hydrated lime,white mud-A and white mud-B was studied through field engineering tests,then the influencing factors of removal efficiency were discussed,and the economic efficiency of white mud replacing hydrated lime in flue gas deacidification was also analyzed.The results showed that the order of the flue gas deacidification efficiency by these three deacidifiers was hydrated lime＞White mud-A＞White mud-B.The physical and chemical properties of white mud,the competitive relationship between SO2 and HC1 and the"shell effect"and other factors were the main reasons limiting its deacidification efficiency,especially the desulfurization efficiency,which decreased by 54～60％compared with hydrated lime,but it could still realize that the discharge of HCl and SO2 at the chimney outlet met the standards,which is a feasible"waste treatment"method.The test results can provide a case support for the application of white mud in waste incineration power plant.
treating waste with wastewaste incineration power plantalkali white mudflue gas deacidificationeconomic analysis
万方数据
维普
