Method of preventing deposit of polymer in reactor vent line dur

Details Method of preventing deposit of polymer in reactor vent line dur Method of preventing deposit of polymer in reactor vent line dur

1977-06-29

1978-10-24

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

260 95R, 528484, C08G 6928

Patent

active

041220757

ABSTRACT:
A process for preventing deposits when venting steam containing entrained polymer from high pressure reactors used for preparing nylon from dicarboxylic acid and diamine. The hot steam generated during condensation polymerization of the reactants is vented through a pressure-control valve at a rate which maintains a desired pressure in the reactor. Deposit of polymer in the valve or vent pipe after release of pressure is prevented by injecting water into the low pressure side of the valve or into the subsequent vent pipe. At least sufficient water is used to saturate the vented steam and to wet the walls of the vent pipe.

REFERENCES:
patent: 3679635 (1972-07-01), Portus
Korshak-Frunze: Synthetic Hetero-Chain Polyamides, 1964, p. 1.

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