helpme experts for designing a scrubber

My ex-wife to be has become a bit of a scrubber since we split up.

Maybe I can get her to contact you during her mid life crisis

Al

You can download the data you need from the following website:

http://yosemite.epa.gov/oaqps/EOGtrain.nsf/DisplayView/SI_412C_0-5?OpenDocument

Note: to design a scrubber, you'll need to know the equilibrium point between the pollutant gas and water as well.

dear mr dvader,

thanks lot for your assistance i go through the website that what you were given.and can you explain about the equilibirium point ? your reply highly appriciated.

Equilibrium point is the saturation point of the water where it cannot dissolve any more gas i.e. the level of gas in the water and air have reached a point of equilibrium. It is dependent upon 3 factors: the concentration level of gas in the air and water, the water temperature, and the air pressure.

If the air pressure or pollutant gas concentration level in the air is higher or the water temperature is lower, the water will dissolve more gas. If the air pressure or pollutant gas concentration level in the air is lower or the water temperature level higher, it will dissolve less. This phenomenom is known as partial pressure, and means that if the air is very clean or the air pressure is lower, or the water contains a high level of dissolved gases or its temperature is higher, the gases will come out of solution to contaminate the air.

To prevent this, use chemicals dissolved in the water to neutralize the gases so that they do not exist as dissolved gases anymore. Use alkalis such as caustic soda to neutralize acidic gases such as sulfur dioxide, and acids such as sulfuric acid to neutralize alkaline gases such as ammonia. An exception is cyanide fumes; while they are alkaline, they must be neutralized with a mixture of caustic soda and sodium hypochlorite to prevent the formation of highly toxic hydrogen cyanide gas.

my dear Mr .dvader,

thankyou very much for your explanation about saturation point.i am really thankful to you,since the website you given and explanation you given are more helpful to me.i think you become a process equipment design engineer am i correct?.further one more thing you pls explain me that,is any formulae or chart is available for determine the saturation point of water to gas? if it available ,can you pls give me the detail?.your coments on this is highly appriciated.

"i think you become a process equipment design engineer am i correct?"

Yes.

"is any formulae or chart is available for determine the saturation point of water to gas? if it available ,can you pls give me the detail?"

Most of these tables are usually determined through experimental processes a.k.a trial and error. I'm not sure, but I believe you'll be able to find some of these charts in a copy of "Perry's Chemical Engineers' Handbook". It has a lot of useful information similar to what you are looking for.

thankyou dvader.

i go through that book