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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2470
Title: Design modifications for energy conservation of sponge iron plants
Authors: Prasad A.K.
Prasad R.K.
Khanam, Shabina
Published in: Journal of Thermal Science and Engineering Applications
Abstract: During the operation in the coal based sponge iron plant, a tremendous amount of heat is generated and significant part of this heat, associated with the waste gas, remains unutilized. It appears worth interesting to modify the process that facilitates the integration of heat available with the waste gas. In the present paper, for the utilization of heat of waste gas, two modifications, namely, case-1 and case-2, are proposed based on preheating of inlet streams. In case-1, preheating of feed material is considered, whereas in case-2, preheating of feed material as well as air is accounted. These cases are then compared with the existing waste heat recovery system of the plant based on coal consumption, operating and capital costs, profit, and payback period. It is found that both cases are better than the existing heat recovery system of the plant. However, case-2 is selected as the best heat recovery option. In comparison to the existing system, case-2 reduces coal and water consumption by 30.5% and 72.6%, respectively. Further, case-2 releases minimum waste gas to the atmosphere that makes the process environment friendly. © 2011 American Society of Mechanical Engineers.
Citation: Journal of Thermal Science and Engineering Applications (2011), 3(1): -
URI: https://doi.org/10.1115/1.4003506
http://repository.iitr.ac.in/handle/123456789/2470
Issue Date: 2011
Keywords: Coal consumption
Economic analysis
Heat integration
Sponge iron plant
ISSN: 19485085
Author Scopus IDs: 39863523100
56295902900
23025264900
Author Affiliations: Prasad, A.K., Department of Mechanical Engineering, National Institute of Technology, Jamshedpur 831001, Jharkhand, India
Prasad, R.K., Department of Mechanical Engineering, National Institute of Technology, Jamshedpur 831001, Jharkhand, India
Khanam, S., Department of Mechanical Engineering, National Institute of Technology, Jamshedpur 831001, Jharkhand, India, Department of Chemical Engineering, National Institute of Technology, Rourkela 769008, Orissa, India
Corresponding Author: Khanam, S.; Department of Mechanical Engineering, National Institute of Technology, Jamshedpur 831001, Jharkhand, India; email: shabinahai@gmail.com
Appears in Collections:Journal Publications [CH]

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