Sulphur Dioxide from Boiler Flue Gas

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jeyaseelan Participant Join Date: Mar 2006 Posts: 2	Sulphur Dioxide from Boiler Flue Gas 08/13/2009 1:05 AM
	can some one brief the method of reducing the sulphur dioxide emission from the boiler flue. the boiler is fired with heavy oil having sulphur percentage of 3.8%. It is a small 4 Ton capacity smoke tube boiler. Thanks Jey
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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: sulphur dioxide emission from flue gas of boiler 08/13/2009 3:13 AM
	Select a fuel that has a lower percentage of sulphur. What is not present in the fuel cannot burn! Both oxides of sulphur, SO₂ and SO₃, are gases at flue temperatures and pressures. Once present, they can be removed from flue gases by scrubbing processes. The equipment is really only suitable for major facilities, and it is emission regulations at those installations that may drive the installation of this type of equipment. __________________ "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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narendra54 Commentator Join Date: Sep 2008 Location: Tiruchirapalli Tamil Nadu India Posts: 56 Good Answers: 3	#2 Re: Sulphur Dioxide from Boiler Flue Gas 08/14/2009 6:10 AM
	As already told that the best solution is to change the fuel with low sulfur. A scrubber can reduce SOx emmission but cost of plant and operation would be too high.
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IBGrizzly Commentator Join Date: Sep 2007 Posts: 67 Good Answers: 8	#3 Re: Sulphur Dioxide from Boiler Flue Gas 09/16/2009 1:56 PM
	As already stated, the best solution is to eliminate the cause of the problem. Any common method of reducing the SOx emissions results in a product that you will have to deal with. Usually gypsum (from treatment with CaCO3 or CaOH slurry in a spray tower) or Sulfuric acid (from passing flue gas through a cleaner, dryer, heater then a catalyst to convert to SO3 followed by concentrated (93%) Sulfuric Acid resulting in a stronger Sulfuric Acid). __________________ "Any fool can know. The point is to understand." - Albert Einstein
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You might be interested in: Boiler Services, Flue and Chimney Systems, Boiler Controllers

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