Application Research on High Efficient Heat Pump Evaporation Technology in Alkali Recovery System

Alkali emitted from chemical industry not only results in environmental damage, but also serious resource waste. As the emitted alkali lye is complied with the principle of Turin (the solution´s boiling point is complied with the linear relationship with the water´s at the same pressure) and its boiling point rising is not big, a set of new high efficiency heat pump evaporation alkali recovery system has been designed. Through theoretical analysis, calculation, and economic analysis, it is indicated that the system´s energy efficiency is very high, energy utilization is very big, the equipment´s payback period is very short, investment benefit is very high, it is complied with the requirement of sustainable development.