METHOD FOR THE PRODUCTION OF PHOSGENE
DE502022007539D1Active Publication Date: 2026-04-16BASF SE
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Patent Information
- Application Number
- DE502022007539
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-07-23
- Filing Date
- 2022-07-13
- Publication Date
- 2026-04-16
- Estimated Expiration
- 2042-07-13
AI Technical Summary
Technical Problem
The production of phosgene is challenged by corrosion damage to plant components, hydrochloric acid formation, and solid deposits at the reactor outlet, which are exacerbated by using a moist activated carbon catalyst.
Method used
Drying the activated carbon catalyst by reducing its water content through an inert gas stream, monitoring moisture levels via dew point measurement, and switching to reaction gases when desired moisture is reached, ensuring drying down to a dew point of -20°C.
Benefits of technology
This process prevents corrosion, reduces hydrochloric acid formation, and enhances catalyst activity, allowing for longer reactor lifetimes and reduced cleaning efforts.
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