Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging

›› 2008, Vol. 16 ›› Issue (3): 480-484.

• SPECIAL ISSUE OF THE FIRST INTERNATIONAL SYMPOSIUM ON SUSTAINABLE CHEMICAL PRODUCT AND PROCESS ENGINEERING • Previous Articles Next Articles

Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging

FENG Xiao¹, LI Yucai¹, YU Xinjiang²

1. Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Department of Petrochemical Engineering, Kalamay Vocational&Technical College, Dushanzi 833600, China

Received:2007-09-25 Revised:2008-02-22 Online:2008-06-28 Published:2008-06-28
Supported by:
National Natural Science Foundation of China (20436040)

Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging

冯霄¹, 李育才¹, 余新江²

1. Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Department of Petrochemical Engineering, Kalamay Vocational&Technical College, Dushanzi 833600, China

通讯作者: FENG Xiao,E-mail:xfeng@mail.xjtu.edu.cn
基金资助:
National Natural Science Foundation of China (20436040)

Abstract

Abstract: Water-using operations in the process industry have demands for water usually both on water quality and temperature,and the existing mathematical models of heat exchange networks cannot guarantee the energy performance of a water network optimal.In this paper,the effects of non-isothermal merging on energy performance of water allocation networks are analyzed,which include utility consumption,total heat exchange load,and number of heat exchange matches.Three principles are proposed to express the effects of non-isothermal merging on energy performance of water allocation networks.A rule of non-isothermal merging without increasing utility consumption is deduced.And an approach to improve energy performance of water allocation network is presented. A case study is given to demonstrate the method.

Key words: water allocation network, energy performance, non-isothermal merging

摘要： Water-using operations in the process industry have demands for water usually both on water quality and temperature,and the existing mathematical models of heat exchange networks cannot guarantee the energy performance of a water network optimal.In this paper,the effects of non-isothermal merging on energy performance of water allocation networks are analyzed,which include utility consumption,total heat exchange load,and number of heat exchange matches.Three principles are proposed to express the effects of non-isothermal merging on energy performance of water allocation networks.A rule of non-isothermal merging without increasing utility consumption is deduced.And an approach to improve energy performance of water allocation network is presented. A case study is given to demonstrate the method.

关键词: water allocation network, energy performance, non-isothermal merging

FENG Xiao, LI Yucai, YU Xinjiang. Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging[J]. , 2008, 16(3): 480-484.

冯霄, 李育才, 余新江. Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging[J]. , 2008, 16(3): 480-484.

References

1 Takama, N., Kuriyama, T., Shiroko, K., Umeda, T., “Optimal water allocation in a petroleum refinery”, Comput. Chem. Eng., 4, 251-258(1980).
2 El-Halwagi, M.M., Manousiouthakis, V., “Mass exchanger networks”, AIChE J., 35(8), 1233-1243(1989).
3 Wang, Y.P., Smith, R., “Wastewater minimization”, Chem. Eng. Sci., 49(7), 981-1006(1994).
4 Wang, Y.P., Smith, R., “Design of distributed effluent treatment systems”, Chem. Eng. Sci., 49(18), 3127-3145(1994).
5 Wang, Y.P., Smith, R., “Wastewater minimization with flowrate constraints”, Chem. Eng. Res. Des., 73(A8), 889-904(1995).
6 Kuo, W.C.J., Smith, R., “Designing for the interactions between water-use and effluent treatment”, Chem. Eng. Res. Des., 76, 287-301(1995).
7 Hallale, N., “A new graphical targeting method for water minimization”, Adv. Environ. Res., 6(3), 377-390(2002).
8 Feng, X., Bai, J., Zheng, X., “On the use of graphical method to determine the targets of single-contaminant regeneration recycling water systems”, Chem. Eng. Sci., 62(8), 2127-2138(2007).
9 Bai, J., Feng, X., Deng, C., “Graphically based optimization of single-contaminant regeneration reuse water systems”, Chem. Eng. Res. Des., 85(A8), 1178-1187(2007).
10 Huang, C.H., Chang, C.T., Ling, H.C., Chang, C.C., “A mathematical model for water usage and treatment network design”, Ind. Eng. Chem. Res., 38(7), 2666-2679(1999).
11 Savelski, M.J., Bagajewicz, M.J., “On the optimality conditions of water utilization systems in process plants with single contaminant”, Chem. Eng. Sci., 55, 5035-5048(2000).
12 Bagajewicz, M.J., Savelski, M.J., “On the use of linear models for the design of water utilization systems in process plants with a single contaminant”, Chem. Eng. Res. Des., 79, 600-610(2001).
13 Zheng, X., Feng, X., Shen, R., Seider, W., “Design of optimal water-using networks with internal water mains”, Ind. Eng. Chem. Res., 45(25), 8413-8420(2006).
14 Zheng, X., Feng, X., Shen, R., “Optimal water-using network with the simplest structure”, J. Chem. Eng. Chinese Univ., 20(4), 622-627(2006).(in Chinese)
15 Feng, X., Liu, Y., Duan, H., Zhang, T., “Improvement on flexibility of water-reusing system with multi-contaminants through changing network structure”, J. Chem. Ind. Eng.(China), 57(8), 1938-1942(2006).(in Chinese)
16 Bai, J., Feng, X., “Analysis of technologies for water system integration”, Chem. Ind. Eng. Prog., 25(12), 1471-1476(2006).(in Chinese)
17 Savulescu, L.E., Smith, R., “Simultaneous energy and water minimisation”, In:AIChE Annual Meeting, Miami(1998).
18 Bagajewicz, M., Rodera, H., Savelski, M., “Energy efficient water utilization systems in process plants”, Comput. Chem. Eng., 26, 59-79(2002).
19 Zheng, X., Feng, X., “Mathematical modeling of simultaneously optimizing water allocation network and heat exchanger network”, In:7th World Congress on Recovery, Recycling & Re-integration, Beijing(2005).
20 Papoulias, S.A., Grossmann, I.E., “A structural optimization approach in process synthesis. Part II:Heat recovery networks”, Comput. Chem. Eng., 7, 707-721(1983).

Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging

Improving Energy Performance of Water Allocation Networks Through Appropriate Stream Merging

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 0

Recommended Articles

Metrics

Comments