Control of Air Pollutants Emission and Improvement of Incineration Rate During Incineration of Oily Sludge-Based Briquette
2019
Mingming Du, Fengchao Wang, Jinling Li, Tao Yu and Chengtun Qu
The incineration technology of oily sludge-based briquette makes great contributions to oily sludge treatment. In order to resolve these problems, air pollutants (SO2 and organic gas) emission and low incinerating rate during the briquette incineration, the effects of additives (CaCO3, CaO; K2CO3, Na2CO3, NaCl; KMnO4, KNO3, NaNO3; Fe2O3, KClO3) on the generating gas and incinerating rate during incineration were studied. The results show that CaCO3 is more effective than CaO for fixing sulphur into residue, and K2CO3 improved the sulphation efficiency of calcium-based additives, which is more useful than NaCl and Na2CO3 did. As for the incinerating rate of briquette, KMnO4 is more effective than KNO3 and NaNO3. The maximum of incinerating rate of briquette is improved from 0.38 to 0.6 g/ min and Fe2O3 and KClO3 can apparently reduce the release of organic gas during the incineration of briquette. But KClO3 can greatly reduce the release of sulphur. When the adding amount of CaCO3, K2CO3, KMnO4 and KClO3 is 16‰, 12‰, 18‰, 6‰ respectively in the process of briquette preparation, the sulphation efficiency reached the maximum of 95.3%, and there is still an extremely small amount of organic gas in flue gas. CaCO3, K2CO3, KMnO4 and KClO3 used in emission control of air pollutants and full combustion of briquette during incineration of oily sludge based-briquette, demonstrates high efficiency and low emission compared to other additives tested in this study.
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