Volume 5, Issue 3, September 2019, Page: 121-126
Heat Pump Evaporation Crystallization Technology of Salt-containing Phenol Wastewater
Xiantao Zhou, College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Longwei Ran, College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Xiaoqing Chen, College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Fei Wang, College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Tong Yang, College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Yun Chen, College of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Received: Sep. 26, 2019;       Accepted: Oct. 22, 2019;       Published: Oct. 30, 2019
DOI: 10.11648/j.ajwse.20190503.13      View  15      Downloads  6
Abstract
China is a large country in the production and use of pesticides, and the production and use of pesticides are among the highest in the world. According to statistics, the ratio of wastewater from pesticide production to wastewater discharged is about 1:100. Arbitrary discharge of a large amount of pesticide wastewater has caused serious environmental problems. The main way of pesticide wastewater treatment is to optimize emission reduction and control emissions. At present, treatment is the main way. There are many kinds of pesticide wastewater, which need targeted treatment, greatly increasing the difficulty of treatment. This paper takes the salty waste phenol wastewater discharged from a pesticide factory as the carrier, through basic physical property analysis, thermal property detection, crystallization kinetics research, basic small test, pilot scale amplification, research and development for the evaporation of this wastewater, crystallization processing equipment. In order to optimize the process route, it is preferable to use MVR compressor technology in comparison with multi-effects. Under the conditions of evaporation temperature 75°C to 90°C, compare the parameters of compressor power, cooling water volume, total energy consumption of evaporation crystallization device, total area, etc., and determine the evaporation temperature to be 90°C. In order to improve the energy utilization rate, the heat such as condensed water, crystal slurry output, and mother liquor reflux is rationally utilized. The multi-stage plate preheater and plate evaporator are used in the equipment design. The separator and condensed water vapor-liquid separation device adopt the patented structure to improve the operation efficiency.
Keywords
Wastewater Treatment, Crystallization Kinetics, Wastewater Physical Properties
To cite this article
Xiantao Zhou, Longwei Ran, Xiaoqing Chen, Fei Wang, Tong Yang, Yun Chen, Heat Pump Evaporation Crystallization Technology of Salt-containing Phenol Wastewater, American Journal of Water Science and Engineering. Vol. 5, No. 3, 2019, pp. 121-126. doi: 10.11648/j.ajwse.20190503.13
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
Tail Hua Ying Lang (Zhang), Xu Zhongquan (translated). Heat exchanger design manual [M]. Beijing: Petroleum Industry Press. 343-400.
[2]
Chun KR, Seban R A. Heat transfer to evaporation liquid films [J]. Heat Transfer, 1971, 93: 391-396.
[3]
Assad M EI Haj, Lampinen Markku J. Mathematical modeling of falling liquid film evaporation process [J]. International Journal of Refrigeration. 2002, 25: 985-991.
[4]
Panday P K. Two-dimensional turbulent film condensation of vapors flowing inside avertical tube and between parallel plates [J]. International journal of Refrigeration. 2003, 26: 492-503.
[5]
Xu Jizhen et al. Boiling heat transfer and gas-liquid two-phase flow [M]. Beijing: Atomic Energy Press. 273-295.
[6]
Hu Baisong, Yang Yumei, Zhao Jingli. Calculation of the best effect in multi-effect evaporation engineering [J]. Inorganic Salt Industry. 2012, 44 (11): 55-56.
[7]
Liu Dianyu, Chen Li. Several main factors leading to the decline of production capacity of falling film evaporator [J]. Medical Engineering Design. 2011, 32 (6): 36-37.
[8]
Liang Liqiang. Influence and elimination of non-condensable gas on mother liquor evaporation [J]. Nonferrous Metallurgy Energy Conservation. 2008, 6 (3): 34-35.
[9]
Yang Luopeng, Hu Huawei, Shen Shengqiang. Heat transfer characteristics of film condensation in non-condensable horizontal tubes [J]. Chinese Journal of Mechanical and Electrical Engineering. 2010, 30 (29): 69-73.
[10]
Liu Dianyu. Several Factors Affecting the Use of Evaporator [J]. Fermentation Technology Newsletter. 200, 37 (4): 46-47.
[11]
Murthy VN, Sarma PK. A note on thin film evaporation-prediction of heat transfer rates [J]. J. chen. Eng. Japan. 1973, 6 (5): 457-459.
[12]
Edmundas Zavadskas, Raslanas Saulius, Kaklauskas A'tfiras. The selection of efective retrofit scenariOS for panel houses in urban neighborhoods based on expected energy savings an d increase in market value: Th e Vilnius case [J]. Energy andBuildings, 2008, 40 (4): 573-587.
[13]
Tuan C, Cheng Y, Yeh Y, eta1. Performance as sessment of a combined vacuum evaporator-M echanical vapor re — compression technology to recover boiler blow — down wastewater and heat [J]. Sustain. Environ. Res. 2013, 23 (2): 139.
[14]
Kansha, Yasuki, et a1. Self-heat recuperation technology for energy saving in chemical processes [J]. Industrial & Engineering Chemistry Research. 2009, 48 (16): 7682—7686.
[15]
Moyers C G, Rousseau R W. Crystallization opetations, in Rousseau R W ed. Handbook of Separation process Technology [M]. New York: John Wiley & Sons. 1987: 758-762.
[16]
Farahbod F, Mowla D, Jafari Nasc M R, etal. Experimental study of forced circulation evaporator in zero discharge desalination process [J]. Desalination. 2012, 285: 352-358.
[17]
Macedonio F, Katzir L, Geisma N. Wind-Aided intensified evaporation and membrane crystallizer integrated brackish water desalination process [J]. Advantages and drawbacks. Desakubation, 2011, 273: 127-135.
[18]
Arkenbout G J. Progress in continuous fractional crystallization. Separation and Purification Reviews [J]. 1978, 7 (1): 99-134.
[19]
Monnier O, Fevotte G, Hoff C, et al. Model identification of batch cooling crystallizations through calorimetry and image analysis [J]. Chemical Engineering Science. 1997, 52 (7): 1125-1139.
[20]
Mersmann A. Proceedings of the ll"1 Symposium on Industrial Crystallization [J]. European Federation of Chemical Engineering. 1990: 18-20.
[21]
Moyers C G, Rousseau R W. Crystallization operations [J]. Handbook of Separation process Technolog. New York; John Wiley & sons. 1987: 758-762.
[22]
Westhoff G M, Kramer H J, Jansens P J, etal. Design of a multi-functional crystallizer for research purposes [J]. Chemical Engineering Research and Design. 2001, 82 (A7): 865-880.
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