Performance analysis of a mechanical vapor recompression zero-emission system with water-injected compressor. (October 2018)

• Record Type: Journal Article
• Authors: Wang, Hanzhi; Li, Shuaiqi; Huang, Chong; He, Shihui; Song, Wenji; Feng, Ziping
• Is Part Of: Energy procedia. Volume 152(2018)
• Page Start: 863
• Page End: 868
• Publication Date: 2018-10
• Subjects: MVR -- high-salinity wastewater -- zero-emission -- enhanced water injection -- superheat; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2018.09.191
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: Wastewater in cities and industry sectors is always characterized with high-salinity. In this paper, a novel mechanical vapor recompression evaporative crystallization system was proposed to treat high-salinity wastewater and realize zero-emission. A mathematical model was developed using the software Engineering Equation Solver (EES). The effects of the flashing pressure ( P flash ), the feeding wastewater salinity ( c 0 ), the first-effect evaporation concentration ( c evap ) and the water injection ratio ( β v ) on the coefficient of performance ( COP ), compression work ( W comp ) and circulation ratio ( CR ) were studied in detail. The results show that the c evap has significant influence on the CR, especially when the c evap is close to c 0 ; the water injected MVR system obtains higher COP, and specifically, with the increase of the β v the COP improved nearly 5.0% for various operation conditions.