Division BAT 75: In order to reduce the organic load sent to the final waste gas treatment and to reduce raw material consumption, BAT is to use all of the techniques given below.
United Kingdom
| Technique | Description | Applicability | |
|---|---|---|---|
| Process-integrated techniques | |||
| a. | Control of feed quality | Control the quality of the feed to minimise the formation of residues (e.g. propane and acetylene content of ethylene; bromine content of chlorine; acetylene content of hydrogen chloride) | Generally applicable |
| b. | Use of oxygen instead of air for oxychlorination | Only applicable to new oxychlorination plants or major oxychlorination plant upgrades | |
| Techniques to recover organic material | |||
| c. | Condensation using chilled water or refrigerants | Use condensation (see Section 12.1) with chilled water or refrigerants such as ammonia or propylene to recover organic compounds from individual vent gas streams before sending them to final treatment | Generally applicable |