Modification of Asphalt Fume Purification System and Technical and Economic Analysis
A project to modify the exhaust gas treatment system for the production line of modified asphalt waterproofing materials for a specific enterprise was studied.The project examined in detail the deficiencies of the old system and introduced a series of reform measures.These included the use of highly efficient modifiers and the implementation of an integrated"combustion chamber-waste heat utilisation unit-water mist spray tower"configuration.This configuration ensures that the production exhaust gases are treated at high temperatures in the combustion chamber,then heat is recovered in the waste heat utilisation unit,and finally the particulate impurities are removed in the water mist spray tower,and the purified gases are released through the chimney.Through this system upgrade,the emission of pollutants has dropped significantly,far exceeding the national environmental emission standards,while the project investment has achieved cost recovery in less than half a year,demonstrating excellent economic and environmental protection double value.