7 replies to this topic

[Pheeto]

I have to make a plan to fix a pilot 1000 m3 chemical scrubber that produces no abatement from a waste recycling plant source. A biological reagent was intended to reduce the emissions but tests has shown that is has no effect. The gas contains large amounts of terpenes which makes sense to still have large concentrations of VOCs after the tests, but even with water alone, the alcohols which is the second largest group by concentration, should be reduced. Now I am asked to find a chemical way to reduce the emissions, which I suggested to use silicon oils of low viscosity to run some tests, but there is a bit of doubt about it in management. Does anyone know a way of chemically reducing these VOCs chemically?

[Pilesar]

I know no way to chemically eliminate these VOCs. Combustion seems the most reliable remedy. 

[breizh]

Hi,

As suggested above a Thermal oxidizer will do the job.

First of all, check with your EPA the requirement before choosing a technology, based on my experience in China.

Note1: Did you try diluted caustic soda solution?

 

I have some experience with Bio filtration to eliminate strong odor from monomers (resins process) meaning you need to find the right bugs to destroy the VOC, unfortunately this technology requires large footprint.

 

Note2: Bio filtration is a unit where selected bug grow, which means residence time, humidity and temperature controls.

Edit: Similar application with a caustic soda scrubber 

 

Good luck

Breizh 

Attached Files

•  caustic wash.pdf   109.8KB   6 downloads

[shvet1]

https://eippcb.jrc.e...chemical-sector

https://eippcb.jrc.e...-incineration-0

 

Could someone share the link to similar docs in US, please?

Edited by shvet1, 16 January 2024 - 11:39 PM.

[Pheeto]

Hi,

As suggested above a Thermal oxidizer will do the job.

First of all, check with your EPA the requirement before choosing a technology, based on my experience in China.

Note: Did you try diluted caustic soda solution?

 

I have some experience with Bio filtration to eliminate strong odor from monomers (resins process) meaning you need to find the right bugs to destroy the VOC, unfortunately this technology requires large footprint.

Good luck

Breizh 

Hello breizh,

 

Unfortunately, the EPA regulations do not allow combustions, so that is not an option. Previously, a biological solution was used but had no effect (I dont know which microorganisms it contains as I dont have this information). I will research on the use of diluted caustic soda solution for this process.

 

Thanks

[latexman]

Unfortunately, the EPA regulations do not allow combustions, 

 

What!?!  That seems highly unusual based on my experience with thermal and catalytic oxidizers.  I realize it's the "gubmint", and that can mean logic and reason may not apply, but can you explain why they do not allow combustion in this instance?  Thank you!

[Pheeto]

 

Unfortunately, the EPA regulations do not allow combustions, 

 

What!?!  That seems highly unusual based on my experience with thermal and catalytic oxidizers.  I realize it's the "gubmint", and that can mean logic and reason may not apply, but can you explain why they do not allow combustion in this instance?  Thank you!

 

This pilot plant will be sent to Greece, so, they have different regulations

[breizh]

Hi,

I'm on the same page, I doubt your comments about TO in Greece. Normally all countries are more stringent about air pollution and TO is a much better solution than Scrubber.

If I interpret your statement Flare will be banned. Check with your senior engineers within your organization.

At the end of the day, it's your decision.

Good luck.

Breizh