SO2 emission from diesel engine

CR4 Home | Mechanical Engineering | Mechanical Engineering

9 comments

Rate

Greg P Participant Join Date: Feb 2009 Posts: 2	SO2 emission from diesel engine 04/21/2009 3:49 PM
	Hello All. Is it safe to assume that all sulfur in diesel fuel is emitted out exhaust as SO2 ? Or is some emitted as other sulfur oxides? I am just trying to find out the mass of SO2 in the exhaust if I know the percentage of sulfur in the fuel that is used... Thanks.
	Register to Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Join CR4, The Engineer's Place for News and Discussion!

edignan Guru Join Date: Jun 2006 Location: Borrego Springs Posts: 2636 Good Answers: 62	#1 Re: SO2 emission from diesel engine 04/21/2009 4:16 PM
	Depending on your geography and the fuel type used the sulfur content can vary greatly going IN the tank. Just wanted to say.... __________________ "If you want to get somewhere else, you must run at least twice as fast as that!"
	Register to Reply Off Topic (Score 5)

jdretired Guru Join Date: May 2007 Location: Australia. Posts: 1642 Good Answers: 81	#2 Re: SO2 emission from diesel engine 04/21/2009 6:32 PM
	Lub oil contamination, there is plenty of information if you google it. Regards JD.
	Register to Reply

Mikerho Guru Join Date: Jan 2007 Location: Moses Lake, WA, USA, Thulcandra - The Silent Planet (C.S. Lewis) Posts: 4216 Good Answers: 194	#3 Re: SO2 emission from diesel engine 04/21/2009 10:04 PM
	Hi Greg, Knowing some chemistry, I would think that there could also be a significant amount of SO₃ generated. I don't know combustion chemistry at all so I could be wrong. I would do a search along the lines: +diesel +combustion +"sulfur dioxide" Mike __________________ "Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone." - Ayn Rand
	Register to Reply

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	#4 Re: SO2 emission from diesel engine 04/22/2009 3:08 AM
	<...Or is some emitted as other sulfur oxides?...> Well, apart from SO₂ and SO₃ there aren't many others! __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
	Register to Reply

Blink Guru Join Date: Aug 2006 Posts: 4484 Good Answers: 246	#5 Re: SO2 emission from diesel engine 04/22/2009 9:53 AM
	Diesels produce H2O as a product of combustion, and run with excess O2 under anything but full load, so: (2)SO2 + O2 + (2)H20 >> (2)H2S04 See also. __________________ There is more to life than just eating mice.
	Register to Reply

WWkayaker

Power-User

Join Date: Apr 2008

Location: Indiana

Posts: 331

Good Answers: 10

Re: SO2 emission from diesel engine

04/22/2009 12:58 PM

This spreadsheet is based on EPA's AP-42 emission factors and is used for Indiana air permits. To calculate, you take hp times 8760 hrs to get hp-hr/yr. Then, multiple hp-hr/yr times emission factor for SO2 (weight % sulfur times 0.00809) and divide by 2000. This will get you your tons per year of SO2 emissions.

Appendix A: Emission Calculations			Page 1 of ? TSD App A
Internal Combustion Engines - Diesel Fuel
Turbine (>600 HP)
Company Name:
Address City IN Zip:
Permit Number:
Plt ID:
Reviewer:
Date:
A. Emissions calculated based on heat input capacity (MMBtu/hr)
Heat Input Capacity		S=	= WEIGHT % SULFUR
MM Btu/hr
0.0
Pollutant
PM*	PM10*	SO2	NOx	VOC	CO
Emission Factor in lb/MMBtu		0.1	0.0573	0.0	0.1	0.85
(1.01S)	**see below
Potential Emission in tons/yr		0.0	0.0	0.0	0.0	0.0	0.0
**NOx emissions: uncontrolled = 3.2 lb/MMBtu, controlled with ignition timing retard = 1.9 lb/MMBtu
B. Emissions calculated based on output rating (hp)
Heat Input Capacity		Potential Throughput			S=	0	= WEIGHT % SULFUR
Horsepower (hp)		hp-hr/yr
0.0	0.0
Pollutant
PM*	PM10*	SO2	NOx	VOC	CO
Emission Factor in lb/hp-hr		0.0007	0.0000	0.00071	0.00550
not provided	(.00809S)	**see below
Potential Emission in tons/yr		0.0	0.0	0.0	0.0	0.0	0.0
**NOx emission factor: uncontrolled = 0.024 lb/hp-hr, controlled by ignition timing retard = 0.013 lb/hp-hr
Note that the PM10 emission factor in lb/hp-hr is not provided in the Supplement B update of AP-42.
An average conversion factor of 1hp-hr = 7,000Btu is provided below.
Methodology
Potential Througput (hp-hr/yr) = hp * 8760 hr/yr
Emission Factors are from AP 42 (Supplement B 10/96)Table 3.4-1 and Table 3.4-2
1 hp-hr = 7000 Btu, AP42 (Supplement B 10/96), Table 3.3-1, Footnote a.
Emission (tons/yr) = [Heat input rate (MMBtu/hr) x Emission Factor (lb/MMBtu)] * 8760 hr/yr / (2,000 lb/ton )
Emission (tons/yr) = [Potential Throughput (hp-hr/yr) x Emission Factor (lb/hp-hr)] / (2,000 lb/ton )
*No information was given regarding which method was used to determine the PM emission factor or whether condensable PM is included. The PM10 emission factor is filterable and condensable PM10 combined.								icdsl600.xls 9/95
Note to Reviewer: Check the applicable rules and test methods for PM and PM10 when using the above emission factors to confirm that the correct factor is used (i.e., condensable included/not included).								updated 4/99

__________________
"We cannot sow thistles and reap clover. Nature simply does not run things that way. She goes by cause and effect." Napoleon Hill

WWkayaker Power-User Join Date: Apr 2008 Location: Indiana Posts: 331 Good Answers: 10	#7 In reply to #6 Re: SO2 emission from diesel engine 04/22/2009 12:59 PM
	That spreadsheet didn't exactly line up the way that it should. I can email it to you if it would help you. __________________ "We cannot sow thistles and reap clover. Nature simply does not run things that way. She goes by cause and effect." Napoleon Hill
	Register to Reply

Anonymous Poster	#9 In reply to #7 Re: SO2 emission from diesel engine 08/03/2010 9:25 PM
	AP-42 emission factors back in 1996 didn't account for ultra low sulfur in today's diesel. I believe it went from 5,000 ppm back in the 90's to 15 ppm today.
	Register to Reply

Anonymous Poster	#8 In reply to #6 Re: SO2 emission from diesel engine 04/06/2010 7:50 AM
	I would appreciate receiving the spreadsheet to the following email moshrik@yahoo.com
	Register to Reply Off Topic (Score 5)

Copy to Clipboard

Users who posted comments:

Anonymous Poster (2); Blink (1); edignan (1); jdretired (1); Mikerho (1); PWSlack (1); WWkayaker (2)

You might be interested in: Industrial Silencers and Mufflers, Steam and Gas Turbines, Biological Safety Cabinets

	Got Something to Say?
	Ask a Question Start a Discussion

	Search this Forum
	Mechanical Engineering: Go

CR4 Sections

	Aerospace
	BioMech & BioMed
	Chemical & Material Science
	Civil Engineering
	Communications & Electronics
	Education and Engineering Careers
	Electrical Engineering
	General Discussion
	Instrumentation
	Manufacturing
	Mechanical Engineering
	New Technologies & Research
	Software & Programming
	Sustainable Engineering
	Transportation

	Site Directories
	Forum Directory Blog Directory User Group Directory RSS Feeds CR4 Rules of Conduct CR4 FAQ Site Glossary Who's Online (77 right now) Show Members

Comments Format:

Subscribe to Discussion:

Rating Vote:

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Re: SO2 emission from diesel engine

Users who posted comments:

Got Something to Say?

Search this Forum

CR4 Sections

Site Directories