The Simulation Study Of MVR Technology Used In Biogas Slurry Concentration

Mechanical vapor recompression technology (MVR) is a new energy-efficient evaporation technology, which can make use of electrical energy and mechanical energy conversion to low-quality steam recycling as high quality steam, it can greatly reduce the loss of steam heat.Because of the energy efficiency, economy and security features of MVR evaporation concentration system, its application potential in the field of concentrated slurry is enormous.Besides, MVR evaporation technology can control the temperature at a relatively low condition, especially suitable for evaporation and concentration of heat-sensitive materials.In addition, MVR evaporation system uses mostly film evaporator, such evaporators can also cope with a wider range of biogas slurry viscosity, easy to scale and other traditional evaporation equipment evaporation difficult to overcome the difficulties.This paper established a set of effective heat recovery MVR evaporation process, content of design includes calculating heat transfer equipment, compressors and pipelines as well as the selection, and the reference to national standards identified by the manufacturing and installation of process equipment and piping, and draw a flow chart biogas MVR evaporation system.Then the process would have been designed to simulate the Aspen Plus platform, related material and energy balances.Finally, this paper designed the simulation of the heat exchanger network processes.By performing the above work, this paper established a set of effective heat recovery MVR evaporation process, based on the amount of the enrichment process design process, the power of biogas slurry concentration can reach 5 tons/hour, provides some references for practical engineering applications.