Acrylates, acetates and aldehydes

The presence of carbonyl compounds such as acrylates (methyl acrylate, ethyl acrylate, butyl acrylate, …), acetates (ethyl acetate, …) and aldehydes (formaldehyde, butyraldehyde, acetaldehyde, …) may require a suitable abatement technique to prevent odour complaints and/or to meet the local emission limits. For example, concentrated emissions due to thermal breathing and product transfer to liquid storage tanks require a very efficient abatement technique.

For the abatement of highly concentrated gas flows, Trevi has completed several projects based on the caustic scrubber or solvent scrubber technique. For all these applications, both the scrubber liquid concentration, scrubber liquid residence time and scrubber liquid temperature should be carefully chosen to obtain the required removal efficiencies. For some applications, a process-integrated water scrubber can be applied (with the recovery of the produced wastewater in the process).

For the abatement of moderate to low concentrations of these carbonyl compounds, a dry scrubber or biofilter can also be used.

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