Production of 500 Tons per Day of Pure Hydrogen Gas from Refinery Off-Gas Stream

Bal , Pramod Kumar (2013) Production of 500 Tons per Day of Pure Hydrogen Gas from Refinery Off-Gas Stream. BTech thesis.



Steam methane reforming (SMR) is one of the most promising processes for hydrogen production. Several studies have demonstrated its advantages from the economic viewpoint. Nowadays process development is based on technical and economic aspects, however, in the near future; the environmental impact will play a significant role in the design of such processes. In this paper, an SMR process is studied from the viewpoint of overall environmental impact, using an exergoenvironmental analysis. This analysis presents the combination of exergy analysis and life cycle assessment. Components where chemical reactions occur are the most important plant components from the exergoenvironmental point of view, because, in general, there is a high environmental impact associated with these components. This is mainly caused by the energy destruction within the components, and this in turn is mainly due to the chemical reactions. The obtained results show that the largest potential for reducing the overall environmental impact is associated with the combustion reactor, the steam reformer, the hydrogen separation unit and the major heat exchangers. The environmental impact in these components can mainly be reduced by improving their exergetic efficiency. A sensitivity analysis for some important exergoenvironmental variables is also presented in the paper.

Item Type:Thesis (BTech)
Uncontrolled Keywords:Hydrogen production; Steam methane reforming process; Exergy analysis.
Subjects:Engineering and Technology > Chemical Engineering > Mass Transfer
Engineering and Technology > Chemical Engineering > Chemical Reactor
Engineering and Technology > Chemical Engineering > Process Design
Engineering and Technology > Chemical Engineering > Heat Transfer
Divisions: Engineering and Technology > Department of Chemical Engineering
ID Code:5357
Deposited By:Hemanta Biswal
Deposited On:17 Dec 2013 16:20
Last Modified:20 Dec 2013 15:45
Supervisor(s):Rath, P

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