To improve the thermal efficiency of the mechanical vapor recompression (MVR) system in high-salinity wastewater evaporative crystallization process, a novel solar-assisted MVR system was proposed. Based on the numerical model, some key operation parameters were analyzed. Results showed that the proposed system required lower compression work, and as the NaCl mass concentration was lower than 2%, the coefficient of performance (COP) reached 24.96. As the concentration ratio of the evaporator increased from 4 to 12, the compression work increased by 71.5% and the collector area decreased by 72.9%. Lower flashing pressure was beneficial to reduce the system temperature and increase processing capacity, while the compression work increased.
TIAN Yu
,
WANG Han-zhi
,
LI Shuai-qi
,
HE Shi-hui
,
SONG Wen-ji
,
FENG Zi-ping
. Performance Analysis of a Solar-Assisted MVR Evaporative Crystalization System[J]. Advances in New and Renewable Energy, 2019
, 7(3)
: 258
-262
.
DOI: 10.3969/j.issn.2095-560X.2019.03.008
[1] 梁林. 处理高浓度含盐废水的机械蒸汽再压缩系统设
计及性能研究[D].计及性能研究[D]. 南京: 南京航空航天大学, 2013.
[2] 顾承真, 闵兆升, 洪厚胜. 机械蒸汽再压缩蒸发系统的性能分析[J]. 化工进展, 2014, 33(1): 30-35. DOI: 10.3969/j.issn.1000-6613.2014.01.006.
[3] 王汉治, 李帅旗, 黄冲, 等. 喷气增焓型单级MVR蒸发结晶系统性能分析[J]. 化工进展, 2018, 37(9): 3312-3319. DOI: 10.16085/j.issn.1000-6613.2017-2497.
[4] ZHOU Y S, SHI C J, DONG G Q.Analysis of a mechanical vapor recompression wastewater distillation system[J]. Desalination, 2014, 353: 91-97. DOI: 10.1016/j.desal.2014.09.013.
[5] LIANG L, HAN D, MA R, et al.Treatment of high-concentration wastewater using double-effect mechanical vapor recompression[J]. Desalination, 2013, 314: 139-146. DOI: 10.1016/j.desal.2013.01.016.
[6] 刘燕, 裴程林, 王建达, 等. 高沸点升溶液蒸发系统的设计与分析[J]. 过程工程学报, 2017, 17(4): 859-865. DOI: 10.12034/j.issn.1009-606X.216329.
[7] HAN D, HE W F, YUE C, et al.Study on desalination of zero-emission system based on mechanical vapor compression[J]. Applied energy, 2017, 185: 1490-1496. DOI: 10.1016/j.apenergy.2015.12.061.
[8] 郑智颖, 李凤臣, 李倩, 等. 海水淡化技术应用研究及发展现状[J]. 科学通报, 2016, 61(21): 2344-2370.
[9] KIM D H.A review of desalting process techniques and economic analysis of the recovery of salts from retentates[J]. Desalination, 2011, 270(1/3): 1-8. DOI: 10.1016/j.desal.2010.12.041.
[10] FARAHBOD F, MOWLA D, NASR M R J, et al. Experimental study of forced circulation evaporator in zero discharge desalination process[J]. Desalination, 2012, 285: 352-358. DOI: 10.1016/j.desal.2011.10.026.
[11] 高磊, 张凯, 董冰, 等. 螺杆水蒸气压缩机的MVR系统在碱回收中的应用[J]. 化工进展, 2014, 33(11): 3112-3117. DOI: 10.3969/j.issn.1000-6613.2014.11.046.
[12] 王力威, 庄景发, 杨鲁伟, 等. 单螺杆水蒸汽压缩机驱动的MVR系统性能实验研究[J]. 中国科学院大学学报, 2015, 32(1): 38-45. DOI: 10.7523/j.issn.2095-6134.2015.01.007.
[13] IBARRA-BAHENA J, DEHESA-CARRASCO U, MONTIEL-GONZÁLEZ M, et al. Feasibility analysis of a hot water solar system coupled to an absorption heat transformer[J]. Applied thermal engineering, 2017, 114: 1176-1185. DOI: 10.1016/j.applthermaleng.2016.05.140.
[14] WANG H Z, LI S Q, HUANG C, et al.Performance analysis of a mechanical vapor recompression zero-emission system with water-injected compressor[J]. Energy procedia, 2018, 152: 863-868. DOI: 10.1016/j.egypro.2018.09.191.
[15] KLEIN S, NELLIS G.Thermodynamics[M]. New York: Cambridge University Press, 2012.
[16] FASQUELLE T, FALCOZ Q, NEVEU P, et al.Numerical simulation of a 50 MWe parabolic trough power plant integrating a thermocline storage tank[J]. Energy conversion and management, 2018, 172: 9-20. DOI: 10.1016/j.enconman.2018.07.006.
