Simulation Analysis on Condensation Parameters in Condensation VOCs Recovery

摘要

Condensation pressure and temperature in condensation volatile organic compounds (VOCs)recovery are very important to the process design. These parameters not only affect final recovery rate but also decide equipment selection, process complexity and the rate of economy and energy consumption. The process flow of condensation method for VOCs recovery technology is simulated and analyzed by HYSYS software. The conclusions are. ①Recovery rate of liquid hydrocarbon increase by 28.8% when pre-cooling temperature is from 10°C to-10°C. ②In condensation stage Ⅱ, recovery rate of methane and butane increases by 91.7% and 14.1% when condensation temperature changes from-30°C to -50°C. But the effect on VOCs recovery is almost equal when condensation pressure variation range is between 1.5MPa and 4.0MPa. ③In condensation stage Ⅱ, power consumption of compressor increase by 2.5 times and heat consumption of condenser increase by 10.4% when condensation pressure 1.5MPa increase to 4.0MPa.