Boiler

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JACKRAJ Active Contributor Join Date: Aug 2016 Posts: 14	Boiler 03/12/2018 4:57 AM
	We do have two queries: What will be the bad effect of firing fuel gas with H2S on boilers (OTSG) when the temperature will be maintained above the dew point of sulphur . If the temperature is above the dew point there should not be any corrosion right as temperature lower than the dew point will only cause the formation of sulphuric acid . Is there any other bad effects .
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: BOILER 03/12/2018 5:51 AM
	Maybe, though one has to question the effect of increased sulphur dioxide and sulphur trioxide emissions on both the equipment and the population downwind of the stack. There may be discharge limits prescribed by the local regulator and exceeding those limits might invoke unwanted commercial and legal action in the applicable jurisdiction. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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JACKRAJ Active Contributor Join Date: Aug 2016 Posts: 14	#2 In reply to #1 Re: BOILER 03/12/2018 6:45 AM
	It is for short term . So we have an aggrement with the local board . But will it make any corrosion on the tubes .
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 In reply to #2 Re: BOILER 03/12/2018 8:17 AM
	"Suck it and see" _{- Anonymous Poster #0} __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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MJCronin Power-User Join Date: Oct 2009 Location: Central Midwest Posts: 455 Good Answers: 38	#5 In reply to #1 Re: BOILER 03/14/2018 11:27 AM
	Gee, ..... Ummm....hot SO2, 3 etc will corrode Superalloy Inconell 740 https://www.sciencedirect.com/science/article/pii/S0010938X13003089 So your carbon steel system should be safe ..... Please let us know how this affects your system. __________________ We have met the enemy....and he is us. POGO
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Jpfalt Guru Join Date: May 2016 Posts: 1746 Good Answers: 87	#4 Re: Boiler 03/13/2018 11:10 AM
	You can still expect to form SO2, SO3 and SO4 radicals which can still attack at elevated temperature. How much will be determined by the boiler metallurgy and tube surface condition.
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