硫酸废液机械蒸汽再压缩减压膜蒸馏特性分析

司泽田; 陈萍; 任秀锦; 向家伟

doi:10.11975/j.issn.1002-6819.202209130

硫酸废液机械蒸汽再压缩减压膜蒸馏特性分析

1.
温州大学机电工程学院，温州 325035
2.
浙江省特种设备科学研究院，杭州 310020

基金项目: 浙江省自然科学基金项目（D21E050001）

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出版历程
- 收稿日期: 2022-09-14
- 修回日期: 2023-02-20
- 发布日期: 2023-03-14

Characteristics analysis of the combined system for the mechanical vapor recompression and vacuum membrane distillation of sulfuric acid wastes

1.
College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, China
2.
Zhejiang Academy of Special Equipment Science, Hangzhou 310020, China

摘要

摘要: 为了高效回收处理工农业生产过程中产生的硫酸废液，该研究提出了一种机械蒸汽再压缩减压膜蒸馏系统。首先，基于质量和能量守恒定律建立数学模型，并设计搭建了系统试验装置，初步以自来水为测试对象开展了可行性验证试验；然后以硫酸溶液为研究对象，借助Matlab软件进行迭代求解计算，模拟分析操作参数对系统热力特性的影响规律。试验结果表明系统膜通量和电导率分别为1.6 kg/(m2•h)和48 μS/cm，单位加热能耗Shec和系统性能系数Cop分别为71.88 kWh/t和8.88，比常规蒸汽加热的减压膜蒸馏系统节能74.7%。模拟结果表明，进料浓度增加，压缩机功耗增加，但性能系数Cop减小；进料温度、进料流速以及渗透侧压力增加，压缩机功耗减小，Cop增加。因此，该系统具有良好的节能性、经济性和环境效益，应用前景广阔。
- 硫酸 /
- 膜蒸馏 /
- 膜通量 /
- 机械蒸汽再压缩 /
- 单位加热能耗 /
- 节能
Abstract: In order to efficiently recover and treat sulfuric acid waste produced in the industrial and agricultural production and utilization process, a combined system of mechanical vapor recompression (MVR) and vacuum membrane distillation (VMD) was proposed and designed in this paper. A compressor was employed to compress the secondary vapor evaporated from the sulfuric acid solution in the VMD module. Then, the compressed vapor with a higher pressure and temperature was used to heat the feed solution in the heat exchanger, which not only recovered the latent heat of internal secondary vapor but also saved the external heat source and cooling water. The proposed system could complete the entire evaporation process by itself, and realize the efficient recovery and utilization of sulfuric acid waste through the complement advantages of VMD and MVR. Firstly, mathematical models were established in the light of the mass and energy conservation principles, the system experimental setup was constructed and then the experiments were carried out to verify the accuracy and reliability of the established mathematical models as well as the feasibility of MVR coupled with VMD. Then, the calculation program of thermodynamic performance was then developed and solved by the iteration with the aid of the Matlab software. The effects of operating parameters including feed concentration, feed temperature, feed velocity and permeate side pressure on thermodynamic characteristics were investigated. The following conclusions could be obtained: A series of experiments were carried out with the tap water as feed, under the conditions of feed temperature, feed velocity, permeate side pressure and heat transfer temperature difference of heat exchanger were 358.15 K, 2.8 m/s, 54.0 kPa and 2 K, membrane flux and condensate water conductivity were tested to be 1.6 kg/(m2•h) and 48 μS/cm, and specific heating energy consumption (Shec) and performance coefficient (Cop) were found to be 71.88 kWh/t and 8.88. The simulated results indicated that when the heat transfer temperature difference of the heat exchanger was constant, increasing the feed concentration increased the saturation temperature difference between inlet solution and outlet vapor of the VMD module (ΔTVMD) and saturation temperature difference between inlet vapor and outlet vapor of the compressor (ΔTcom), which led to the increase of the compression ratio and power consumption of the compressor while the decrease of the Cop; increasing the feed temperature, feed velocity and permeate side pressure would decrease the values of ΔTVMD and ΔTcom, resulting in the decrease of the compression ratio and power consumption of the compressor while the increase of the Cop. Compared with single-effect evaporation, double-effect evaporation, three-effect evaporation and MVR systems, the separation efficiency of VMD, Heat pump-VMD and MVR-VMD systems was up to 99.9%, with obvious advantages in separation performance. However, compared with VMD and Heat pump-VMD systems, the current MVR-VMD system was more efficient and energy-saving. Obviously, considering the characteristics of separation and energy saving, the MVR-VMD system has greater advantages and broad prospects for development and application.
- sulfuric acid /
- membrane distillation /
- membrane flux /
- mechanical vapor recompression /
- unit heating energy consumption /
- energy saving

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参考文献(37)

[1]	ZHAO Q, LIU C, LI B, et al. Recovery of chromium from residue of sulfuric acid leaching of chromite[J]. Process Safety and Environmental Protection, 2018, 113: 78-87.
[2]	HLDER A, KARAK S, et al. Ultrastable imine‐based covalent organic frameworks for sulfuric acid recovery: An effect of interlayer hydrogen bonding[J]. Angewandte Chemie International Edition, 2018, 57(20): 5797-5802.
[3]	朱万超，宋鑫华，葛艺，等. 质子交换膜燃料电池/直接接触式膜蒸馏分布式联产系统性能[J]. 农业工程学报，2022，38(1)：239-247.ZHU Wanchao, SONG Xinhua, GE Yi, et al. Thermal performance analysis of distributed cogeneration system based on proton exchange membrane fuel cell/direct contact membrane distillation[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2022, 38 (1): 239-247. (in Chinese with English abstract)
[4]	BROGIOLI D, YIP N Y. Energy efficiency analysis of membrane distillation for thermally regenerative salinity gradient power technologies[J]. Desalination, 2022, 531: 1-11.
[5]	SPARENBERG M C, BASTIEN H, CRISTHIAN M F, et al. Experimental mass transfer comparison between vacuum and direct contact membrane distillation for the concentration of carbonate solutions[J]. Separation and Purification Technology, 2021, 275: 1-14.
[6]	SCHEEPERS D M, TAHIR AJ, BRUNNER C, et al. Vacuum membrane distillation multi-component numerical model for ammonia recovery from liquid streams[J]. Journal of Membrane Science, 2020, 30: 1-17.
[7]	贺清尧，石明菲，冯椋，等. 基于膜蒸馏的沼液资源化处理研究进展[J]. 农业工程学报，2021，37(8)：259-268.HE Qingyao, SHI Mingfei, FENG Liang, et al. Research progress of biogas slurry resourceful treatment by membrane distillation[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2021, 37(8): 259-268. (in Chinese with English abstract)
[8]	MARTIJIN B, BART N. Cost reduction of heat pump assisted membrane distillation by using variable electricity prices[J]. Desalination, 2022, 530:1-10.
[9]	CRISCUOLI A, DRIOLI E. Date juice concentration by vacuum membrane distillation[J]. Separation and Purification Technology, 2020, 251: 1-9.
[10]	WU H, SHEN F, WANG J, et al. Separation and concentration of ionic liquid aqueous solution by vacuum membrane distillation[J]. Journal of Membrane Science, 2016, 518: 216-228.
[11]	LI X, QIN Y, LIU R, et al. Study on concentration of aqueous sulfuric acid solution by multiple-effect membrane distillation[J]. Desalination, 2012, 307: 34-41.
[12]	ZHANG G, ZHANG Q, ZHOU K. Study on concentrating sulfuric acid solution by vacuum membrane distillation[J]. Journal of Central South University of Technology, 1999, 6(2): 99-102.
[13]	李潜，朱红力，赵丽珍. 萃取膜蒸馏法处理钛白废酸的研究[J]. 江苏化工，2004(5)：42-46.LI Qian, ZHU Hongli, ZHAO Lizhen. Study on disposal of waste acid in titania production by extration-vacuum membrane distillation process[J]. Jiangsu Chemical Industry, 2004(5): 42-46. (in Chinese with English abstract)
[14]	ZHOU S H, LIU X Y, BIAN Y N. Energy, exergy and exergoeconomic analysis of a combined cooling, desalination and power system[J]. Energy Conversion Management, 2020, 218: 1-18.
[15]	AHMED K A, NATARAJAN E. Numerical investigation on the effect of toroidal rings in a parabolictrough receiver with the operation of gases: An energy and exergy analysis[J]. Energy, 2020, 203: 1-19.
[16]	JIANG H, ZHANG Z Y. Design and evaluation of a parallel-connected double-effect mechanical vapor recompression evaporation crystallization system[J]. Applied Thermal Engineering, 2020, 179: 1-10.
[17]	LI J F, ZHOU W C, FAN S Q, et al. Bioethanol production in vacuum membrane distillation bioreactor by permeate fractional condensation and mechanical vapor compression with polytetrafluoroethylene (PTFE) membrane[J]. Bioresource Technology, 2018, 268: 708-714.
[18]	WANG Y N, QIU B Y, XIAO Z Y, et al. Hybrid desalination system of mechanical vapor recompression based on membrane distillation[J]. Membrane Water Treatment, 2021, 12(3): 115-123.
[19]	赵林，吴小华，孙东亮，等. 乙醇超重力MVR热泵精馏系统仿真及优化研究[J]. 工程热物理学报，2022，43(3)：679-684.ZHAO Lin, WU Xiaohua, SUN Dongliang, et al. Simulation and optimization study of ethanol-water high gravity MVR heat pump distillation system[J]. Journal of Engineering Thermophysics, 2022, 43(3): 679-684. (in Chinese with English abstract)
[20]	李帅旗，王汉治，冯自平，等. 耦合过热蒸汽干燥的MVR蒸发结晶系统热力性能分析[J]. 化工进展，2020，39(2)：439-445.LI Shuaiqi, WANG Hanzhi, FENG Ziping, et al. Performance analysis of a MVR evaporative crystallization system coupled with super-heated steam drying technology[J]. Chemical Industry and Engineering Progress, 2020, 39(2): 439-445. (in Chinese with English abstract)
[21]	KIM Y, KIM D K, AMANO Y, et al. Performance of single‐ and double‐effect operable mechanical vapor recompression desalination system adaptable to variable wind energy[J]. International Journal of Energy Research, 2019, 43(9): 4606-4612.
[22]	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.
[23]	郝维维. 热泵膜蒸馏系统研究[D]. 天津：天津科技大学, 2015. HAO Weiwei. Study on Heat Pump Membrane Distillation System[D]. Tianjin: Tianjin University of Science and Technology, 2015. (in Chinese with English abstract)
[24]	KIM Y D, THU K, CHOI S H. Solar-assisted multi-stage vacuum membrane distillation system with heat recovery unit[J]. Desalination, 2015, 367: 161-171.
[25]	CHIAM C K, SARBATLY R. Study of the rectangular cross-flow flat-sheet membrane module for desalination by vacuum membrane distillation[J]. Chemical Engineering & Processing, 2016, 102: 169-185.
[26]	HOG H S, LI W, GU C Z. Performance study on a mechanical vapor compression evaporation system driven by Roots compressor[J]. International Journal of Heat Mass Transfer, 2018; 125: 343-349.
[27]	梁林，韩东，彭涛. 机械蒸汽再压缩硫酸铵废水处理系统的分析[J]. 化学工程，2012，40(8)：74-78.LIANG Lin, HAN Dong, PENG Tao. Exergy analysis of system for ammonium sulfate wastewater treatment with mechanical vapor recompression[J]. Chemical Engineering, 2012, 40(8): 74-78. (in Chinese with English abstract)
[28]	刘燕，裴程林，王智，等. 两效机械蒸汽再压缩蒸发系统性能分析[J]. 现代化工，2016，36(5)：130-132，134.LIU Yan, PEI Chenglin, WANG Zhi, et al. Performance analysis of two-stage mechanical vapor recompression evaporation system[J]. Modern Chemical Industry, 2016, 36(5): 130-132, 134. (in Chinese with English abstract)
[29]	刘少武，齐焉，刘东. 硫酸工作手册[M]. 南京：东南大学出版社，2001，2.
[30]	沙业汪，孙仲坡. 硫酸工艺设计手册[M]. 南京：化工部硫酸工业科技情报中心站出版社，1990.
[31]	孙文. 两级机械蒸汽再压缩系统热力特性与优化研究[D]. 哈尔滨：哈尔滨工业大学，2018. SUN Wen. Research on Thermodynamic Characteristics and Optimization of Two-stage Mechanical Vapor Recompression System[D]. Harbin: Harbin Institute of Technology, 2018. (in Chinese with English abstract)
[32]	SI Z T, HAN D, GU J M, et al. Exergy analysis of a vacuum membrane distillation system integrated with mechanical vapor recompression for sulfuric acid waste treatment[J]. Applied Thermal Engineering, 2020, 178: 1-13.
[33]	韩东，彭涛，梁林. 基于蒸汽机械再压缩的硫酸铵蒸发结晶实验[J]. 化工进展，2009，28(S1)：187-189.
[34]	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]. 南京：南京航空航天大学，2013. LIANG Lin. Design and Performance Research of Mechanical Vapor Recompression System for Treating High Concentration Saline Wastewater[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2013. (in Chinese with English abstract)
[35]	李金平，王航，王兆福，等. 甘南臧区太阳能主被动联合采暖系统性能[J]. 农业工程学报，2018，34(21)：1-7.LI Jinping, WANG Hang, WANG Zhaofu, et al. Performance of solar active-passive combined heating system in Tibetan areas of southern Gansu[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2018, 34(21): 1-7. (in Chinese with English abstract)
[36]	梁林，韩东. 蒸汽机械再压缩蒸发器的实验[J]. 化工进展，2009，28：358-360.
[37]	张旸，任建勋，陈泽敬. 压缩式热泵膜蒸发系统的分析与试验研究[J]. 工程热物理学报，2005，26(1)：107-109.ZANG Yang, REN Jianxun, CHEN Zejing. Experimental studies on vapor compress heat pump membrane distillation system [J]. Journal of Engineering Thermophysics, 2005, 26(1): 107-109. (in Chinese with English abstract)

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