Process technology available for licensing

A number of licensors offer the process technology for phosgene plant, all based on the catalysed reaction of carbon monoxide and dichlorine [64,64a]. The predominant companies are listed in Table 4.3. 

8 Equipment and instrument lists with item numbers 

List of necessary laboratory equipment Sampling and testing procedures Sample schedules Plant control tests 

The process flow system and associated safety absorption system are reproduced with permission in Figs. 4.5 and 4.6 [823b]. 

Carbon monoxide (97%) and dichlorine (99.8%) are metered, mixed and completely converted in the catalytic reactor to phosgene (an on-line analytical control system guarantees maximum yield, and the reactor temperature is regulated to maintain favourable equilibria, prevent phosgene condensation, and prevent corrosion of the reactor tubes by hot dichlorine). The gas (the quality of which is largely dependent upon the feedstock purity) is then directly 

---