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An investigation of reaction furnace temperatures and sulfur recovery

Content Provider	Springer Nature Link
Author	Asadi, S. Pakizeh, M. Pourafshari Chenar, M.
Copyright Year	2011
Abstract	In a modern day sulfur recovery unit (SRU), hydrogen sulfide (H$_{2}$S) is converted to elemental sulfur using a modified Claus unit. A process simulator called TSWEET has been used to consider the Claus process. The effect of the H$_{2}$S concentration, the H$_{2}$S/CO$_{2}$ ratio, the input air flow rate, the acid gas flow of the acid gas (AG) splitter and the temperature of the acid gas feed at three different oxygen concentrations (in the air input) on the main burner temperature have been studied. Also the effects of the tail gas ratio and the catalytic bed type on the sulfur recovery were studied. The bed temperatures were optimized in order to enhance the sulfur recovery for a given acid gas feed and air input. Initially when the fraction of AG splitter flow to the main burner was increased, the temperature of the main burner increased to a maximum but then decreased sharply when the flow fraction was further increased; this was true for all three concentrations of oxygen. However, if three other parameters (the concentration of H$_{2}$S, the ratio H$_{2}$S/CO$_{2}$ and the flow rate of air) were increased, the temperature of the main burner increased monotonically. This increase had different slopes depending on the oxygen concentration in the input air. But, by increasing the temperature of the acid gas feed, the temperature of the main burner decreased. In general, the concentration of oxygen in the input air into the Claus unit had little effect on the temperature of the main burner (This is true for all parameters). The optimal catalytic bed temperature, tail gas ratio and type of catalytic bed were also determined and these conditions are a minimum temperature of 300°C, a ratio of 2.0 and a hydrolysing Claus bed.
Starting Page	362
Ending Page	371
Page Count	10
File Format	PDF
ISSN	20950179
Journal	Frontiers of Chemical Engineering in China
Volume Number	5
Issue Number	3
e-ISSN	16737474
Language	English
Publisher	SP Higher Education Press
Publisher Date	2011-06-24
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Claus unit concentration of H$_{2}$S tail gas ratio sulfur recovery catalytic bed Industrial Chemistry/Chemical Engineering Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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