3 replies to this topic

[Pingue2008]

Dear,

 

It has been awhile I have not been "home". I hope everyone is well. I come to you with a problem I need to solve.

I just got a new position with a specialty chemicals company. the first project I was given was to get odor under control. My predecessor left the following and from that I will build my questions.

 

Acrylates (mainly Ethyl acrylate )concentration 300 PPM and flow is 960 CFM. We have two of this stream. The engineer before me also mentioned he arrived at the 300 PPM per PTE (Potential To Emit calculations) but the there is no trail.

 

1- Has any of you done such calculations before? I meant PTE calculations. I tried equilibrium estimates using Raoul's Law. but the system is not ideal so numbers don't make sense.

2- A Calgon Rep came in to discuss activated carbon drum. the sale rep told me that the carbon demand will so great to justify the cost. He suggested adding a regeneration system. this is being investigated.

3- I thought about a scrubber followed by activated carbon. The problem is that the spent solvent can't be sent to the waste treatment. I am looking for a chemical that can neutralize/ breakdown the acrylate so I can sent the spent solvent to waste treatment.

4- I thought about a thermal oxidizer I reached out to Megtec but have not heard anything back.

Attached is a simplified process flow diagram. Is there a way to measure Odor? I search the web in vain. I can use the TOC/TVA but I don't know how accurate that will be. Another challenge is space. I am very limited on space. I am trying the set the whole thing on the roof where access is not easy if I have to change the activated carbon very often.

 

Thank you,

Attached Files

•  BFD FOR ODOR CONTROL PROJECT Rev01.pdf   176.84KB   12 downloads

[breizh]

Hi ,

Congrats for the new position .

Please consider the resource attached ,

 

EA has a very strong odor and 300 ppm is a lot .

 

In Thailand I've been using caustic soda scrubber and In Australia (Melbourne area)  it was a biofiltration unit from Clean TeQ   .

Use your favorite engine to find more input about Biofiltration , it requires a lot of space but operating costs are low compared to Thermal oxidation .

 

I'm always concerned with AC , you accumulate TOC with the risk to have self ignition of the bed !

 

 

 

Good luck

Breizh

Edited by breizh, 16 August 2018 - 12:11 AM.

[latexman]

We've used TETA scrubber and caustic scrubber and incinerator.   An incinerator is the best method to consistently get under the odor threshold.  Of course, it is more expensive too.  Try John Zink on the incinerator.

Edited by latexman, 16 August 2018 - 06:41 AM.

[Pingue2008]

Thank you Breizh and Latexman.