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I believe the edit about Morpholine was well intentioned. I reverted it because:
If User:Otispa would create a personal sandbox and write a brief article (in that sandbox) about the DGA process and its problems, I would be happy to help him format it in Wikipedia style. I would also be happy to boil it down into one or two sentences for inclusion in this article. But first, I would need to have a reference to back up the "Case History." - mbeychok 00:30, 13 February 2007 (UTC)
I'm working on a project to design a unit using this process, so I appreciate the writeup. One thing I've not been able to find is, why is this called the "Claus Process"? I would guess a pretty smart guy named Claus figured this out. Does anyone have any more historical information that could be added to the article? Thanks. Ultimate ed 13:30, 8 June 2007 (UTC)
Claus process is only applicable for rich H2S content (above 25%)sour gas. What processes are used to remove lower H2S content sour gas? Pangsm 14:25, 24 August 2007 (UTC)
The article says this process eliminates 97% of the H2S. Does anyone know how the tail gas purification process works? How about Shell Claus Offgas Treating (SCOT)? I believe 3% H2S is still too high for the gas to be used as fuel under US environmental regs. —Preceding unsigned comment added by 138.32.32.166 ( talk) 09:34, 25 March 2008 (UTC)
Dears,
Am working on preperation for an EPF and the client is asking for use of the Natural gas to run the indirect fired heater, but this gas containing H2S, So I'd like to have something writtien to state that its not acceptable to use the H2S for that porpuses, as the fire wil result on SO2 which is toxic same as H2S.
Thanks for the Help —Preceding unsigned comment added by 82.129.241.66 ( talk) 10:01, 3 February 2010 (UTC)
The flow diagram shows air direct to third catalytic stage. That would suggest this drawing is actually a SuperClaus flow diagram. — Preceding unsigned comment added by 50.65.8.252 ( talk) 03:38, 21 August 2012 (UTC)
It would not have been feasible, in my opinion, to include flow diagrams for all of the possible versions, so one diagram was used.
After all, the SuperClaus version is a Claus process and thus the flow diagram is not wrong. mbeychok ( talk) 06:48, 21 August 2012 (UTC)
The SuperClaus process is not really a Claus process. It is more like a tail gas treating process because the working of the process is different than for the Claus process (direct oxidation of H2S over a special catalyst bed instead of reaction of H2S with SO2). The Claus process can be installed with 2 or 3 reactor stages. 2 stages gives approximately 97% sulfur recovery efficiency and 3 stages gives approx 98% sulfur recovery efficiency. Now it looks like that the third reactor stage need air (oxygen). Operating the Claus unit in oxygen excess gives a lot of operational problems (sulfur fires, burning of pyroforic iron, catalyst degradation). Adding air to the 3rd Claus catalytic reactor stage does not belong to the Claus process and is also never installed. In my opinion the diagram is confusing. — Preceding unsigned comment added by 193.173.54.35 ( talk) 12:11, 4 August 2014 (UTC)
My calculation of the enthalpy of the catalytic step, using heats of formation, comes to -72.77 kJ/mol of S. The enthalpy for the thermal step (per mol of S) appears to be correct. I cannot understand how the article's value for the former was arrived at. Mine seems to make more sense, as the thermal step sends S oxidation states from -2 to +4 whereas the catalytic step is a disproportionation from oxidation states -2 and +4 to 0 (hence more neutral). Since the heat of formation of H2S from the elements is much smaller than that for SO2, it makes sense that the disproportionation should be less enthalpic than the thermal step.
Pgpotvin ( talk) 04:26, 13 October 2016 (UTC)
"Ordinarily, the solubility of a gas increases with increasing temperature but with H2S it is the opposite. "
Is this correct? Gases are more soluble in cooler liquids than hot liquids. Is this the wrong way around? 122.56.82.81 ( talk) 23:16, 12 November 2023 (UTC)
This is the
talk page for discussing improvements to the
Claus process article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article has not yet been rated on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||
|
I believe the edit about Morpholine was well intentioned. I reverted it because:
If User:Otispa would create a personal sandbox and write a brief article (in that sandbox) about the DGA process and its problems, I would be happy to help him format it in Wikipedia style. I would also be happy to boil it down into one or two sentences for inclusion in this article. But first, I would need to have a reference to back up the "Case History." - mbeychok 00:30, 13 February 2007 (UTC)
I'm working on a project to design a unit using this process, so I appreciate the writeup. One thing I've not been able to find is, why is this called the "Claus Process"? I would guess a pretty smart guy named Claus figured this out. Does anyone have any more historical information that could be added to the article? Thanks. Ultimate ed 13:30, 8 June 2007 (UTC)
Claus process is only applicable for rich H2S content (above 25%)sour gas. What processes are used to remove lower H2S content sour gas? Pangsm 14:25, 24 August 2007 (UTC)
The article says this process eliminates 97% of the H2S. Does anyone know how the tail gas purification process works? How about Shell Claus Offgas Treating (SCOT)? I believe 3% H2S is still too high for the gas to be used as fuel under US environmental regs. —Preceding unsigned comment added by 138.32.32.166 ( talk) 09:34, 25 March 2008 (UTC)
Dears,
Am working on preperation for an EPF and the client is asking for use of the Natural gas to run the indirect fired heater, but this gas containing H2S, So I'd like to have something writtien to state that its not acceptable to use the H2S for that porpuses, as the fire wil result on SO2 which is toxic same as H2S.
Thanks for the Help —Preceding unsigned comment added by 82.129.241.66 ( talk) 10:01, 3 February 2010 (UTC)
The flow diagram shows air direct to third catalytic stage. That would suggest this drawing is actually a SuperClaus flow diagram. — Preceding unsigned comment added by 50.65.8.252 ( talk) 03:38, 21 August 2012 (UTC)
It would not have been feasible, in my opinion, to include flow diagrams for all of the possible versions, so one diagram was used.
After all, the SuperClaus version is a Claus process and thus the flow diagram is not wrong. mbeychok ( talk) 06:48, 21 August 2012 (UTC)
The SuperClaus process is not really a Claus process. It is more like a tail gas treating process because the working of the process is different than for the Claus process (direct oxidation of H2S over a special catalyst bed instead of reaction of H2S with SO2). The Claus process can be installed with 2 or 3 reactor stages. 2 stages gives approximately 97% sulfur recovery efficiency and 3 stages gives approx 98% sulfur recovery efficiency. Now it looks like that the third reactor stage need air (oxygen). Operating the Claus unit in oxygen excess gives a lot of operational problems (sulfur fires, burning of pyroforic iron, catalyst degradation). Adding air to the 3rd Claus catalytic reactor stage does not belong to the Claus process and is also never installed. In my opinion the diagram is confusing. — Preceding unsigned comment added by 193.173.54.35 ( talk) 12:11, 4 August 2014 (UTC)
My calculation of the enthalpy of the catalytic step, using heats of formation, comes to -72.77 kJ/mol of S. The enthalpy for the thermal step (per mol of S) appears to be correct. I cannot understand how the article's value for the former was arrived at. Mine seems to make more sense, as the thermal step sends S oxidation states from -2 to +4 whereas the catalytic step is a disproportionation from oxidation states -2 and +4 to 0 (hence more neutral). Since the heat of formation of H2S from the elements is much smaller than that for SO2, it makes sense that the disproportionation should be less enthalpic than the thermal step.
Pgpotvin ( talk) 04:26, 13 October 2016 (UTC)
"Ordinarily, the solubility of a gas increases with increasing temperature but with H2S it is the opposite. "
Is this correct? Gases are more soluble in cooler liquids than hot liquids. Is this the wrong way around? 122.56.82.81 ( talk) 23:16, 12 November 2023 (UTC)