364763 Heat Exchanger Network Design with Considering Physical Properties Variation

Monday, November 17, 2014
Galleria Exhibit Hall (Hilton Atlanta)
Farhad Fazlollahi, Chemical Engineering Department, Chemical Engineering Department, Brigham Young University, Provo, UT 84602, USA, Provo, UT, Larry L. Baxter, Chemical Engineering, Brigham Young University, Provo, UT and Seyed Hamed Alavi Nejad, Department of Chemical Engineering, Faculty of Engineering, University of Sistan and Baluchestan, P.O. Box 98164-161, Zahedan, Iran, Zahedan, Iran

In this paper energy targeting for an ammonia plant has already been done with and without stream segmentation. Pinch temperature, ΔTmin, and the values of the hot and cold utilities in both cases are different and so the HEN has to be changed. The results demonstrates that when splitting streams into two or more segments within the existing ammonia plant, pinch point increases by about 3˚C, and hot and cold utilities consumption increases by approximately 23% and 11%, respectively. The area of the heat exchanger network also is increased by about 50%. Finally, an aggregation diagram is introduced for the evaluation of specific heat capacity distribution along the whole streams of the network.

Extended Abstract: File Not Uploaded
See more of this Session: Interactive Session: Systems and Process Control
See more of this Group/Topical: Computing and Systems Technology Division