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Proceedings of the
Second International Energy 2030 Conference,
November 4-5, 2008, Abu Dhabi, UAE
Effect of Carbon Dioxide and Nitrogen in Hydrogen Sulfide
on Optimum Reactor Temperature in Claus Process
H. Selim
University of Maryland, USA
A. K. Gupta
University of Maryland, USA
M. Sassi
The Petroleum Institute, UAE
Abstract
This paper provides detailed examination of the effect of presence of N2 and CO2 in acid gas on the
composition of the subsequent equilibrium product gas stream, in order to seek the optimum operating
temperature for high sulfur removal efficiency. The study provides the important role of the incoming gas
composition on the fate of sulfur recovery in the Claus reactor. Our studies reveal that the presence of N2
and CO2 in the acid gas stream impacts the sulfur recovery efficiency by altering the optimum temperature
of the reactor as well as the conversion efficiency. The results show that the reactor temperature should be
precisely monitored in order to enhance the sulfur recovery. The simulations provided here assist in
quantifying the role of acid gas composition on sulfur recovery under different operational conditions of
the reactor with minimal adverse effect on the environment.
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