Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-10-29
1976-02-10
Tayman, Jr., James H.
Chemistry: physical processes
Physical processes
Crystallization
23260, 423316, 203DIG6, C01B 25163, B01J 100
Patent
active
039376168
ABSTRACT:
Phosphorous acid is produced from PCl.sub.3 and water in an apparatus, the essential parts of which include a reactor and an evaporator, which are connected together by means of a conduit running from the bottom of the reactor to the head of the evaporator. The evaporator communicates with the lower end of a separator of which the upstream end terminates in an off-gas outlet. More particularly, the downstream end of the evaporator is connected to a stripping column which is provided with an off-gas outlet opening into the off-gas outlet associated with the evaporator.
REFERENCES:
patent: 3526482 (1970-09-01), Beltz et al.
Cremer Joseph
Martin Willi
Hoechst Aktiengesellschaft
Tayman, Jr. James H.
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