Ethylene oxide and other epoxides

Over the last 30 years, Trevi has realised more than 100 gas scrubbers for the abatement of waste gases with high concentrations (up to 100%) of EO and other epoxides (such as propylene oxide and butylene oxide). These installations use a concentrated acid solution as the scrubbing liquid (acid scrubber) and often consist of multistage-packed bed scrubbers.

Ethylene oxide (EO) is widely used for the production of poly glycol ethers and the sterilisation of heat-sensitive tools and equipment.

In recent years, our Trevi R&D division has developed a new scrubbing concept for EO that eliminates the need for the periodic replacement of the acid scrubber liquid. This has multiple advantages: lower operational cost and waste production, higher safety etc.

For small gas flows (4-40 m3/h), a liquid jet gas ejector scrubber can be applied as a scrubbing technique, for example at gas filling stations. A bubble reactor and gas jet liquid ejector scrubber can also be used for specific applications of EO abatement.

A dry scrubber can be applied for the abatement of low concentrations of EO in fairly small gas flows. Our Trevi R&D division has also developed a biological waste gas technique (biofilter) for the abatement of high volumes of low concentrated (< 100 ppmv EO) air flows, as can be seen in aeration rooms at EO steriliser facilities.

Contact us with any questions or for more information.

Click here to see some of our projects.