Quench System

[npf]

All,

I need information regarding the use of Quench System(caustic or water) to remove sulfur mist and also to cool the gas.Also is it possible to remove traces of SO2 with Quench System

Any help will be appreciated

Regards
sp

 

[NeedAHoliday]

sp77,

Yes you can use a caustic or water based quench for removal of SO2. However if you are dealing with a mist as opposed to a vapour then you I would suggest a mist eliminator be used after quench zone. This is due to the fact that sulfuric acid mist is very fine and can pass straight through a quench unit unless you are operating at a high pressure drop.

With respect to the cooling of the gas stream this is implied by using the term quench, but in any event provided you are not trying to quech an already saturated gas stream and the gas stream has temp greater than cooling water, you will attain cooling. With respect to the amount of cooling that is dependent on the inlet conditions of both streams of which I can not comment on.

You may also want to look at wet electrostatic precipitators as they are used for removinf mists and will produce a saturated gas stream at the exit.

If you wish more detailed response than this general one I would suggest that you provide more detailed information, this way people will be able to comment on amount of cooling you may get, what equipment would be suitable, etc.

Cheers.

 

[oxilume]

sp77,

For a simple cost effective system use a venturi scrubber. Ensure that the venturi scrubber has a high pressure drop as needaholiday suggested. For an example see the RamJet at

http://www.oxilume.com

Todd

http://www.oxilume.com

 

[npf]

Need A Holiday/Todd,

Thanks for your comments.I will provide you a general case so that I can be more clear.Suppose I have a vapor stream coming from the Sulfur Condenser at a temperature of 280F and it contains Sulfur Mist and to some extent SO2 and I need to knock it down to 110F and remove Sulfur Mist and SO2 also , then what units will I require?What will be the approx cost for that system

Regards
sp77

 

[oxilume]

sp77,

What type of plant/process unit is the SO2 emission coming from? Also, briefly describe your current process flow with regards to the source of SO2?

Also, I need to know flowrate of gas in SCFM.

Knowing the above will help me give you some basic information.

Todd

http://www.oxilume.com

 

[siretb]

A quench alone (designed as to quench only) will have a very limited efficiency for removing SOx (SO2 + SO3).
The use of a venturi scrubber, with caustic, will be much better.
Do you have actual measures of SO3 content?