Process and apparatus for withdrawing a sample from a reaction v

Details Process and apparatus for withdrawing a sample from a reaction v Process and apparatus for withdrawing a sample from a reaction v

1977-02-10

1977-11-08

Swisher, S. Clement

Measuring and testing

Measuring vessel

G01N 114

Patent

active

040569810

ABSTRACT:
A process and apparatus for the withdrawal of samples from a reaction vessel under pressure containing a solid-liquid dispersion, emulsion, or suspension sensitive to mechanical stress, wherein a portion of the liquid consists of a liquefied gas present in the emulsion, dispersion, or suspension in a dissolved or emulsified form, as for example, the withdrawal of samples during the manufacture of polyvinyl chloride in accordance with the suspension or emulsion method. A syringe and cannula combination are filled with an inert protective fluid with the cannula being passed through a valve arrangement in the reaction vessel to eject the protective fluid thereinto and to replace the ejected fluid with a sample from the reaction vessel. The sample-containing syringe is sealed before withdrawal of the cannula of the combination from the reaction vessel, which is again sealed by the valve arrangement.

REFERENCES:
patent: 3229711 (1966-01-01), Leopold et al.
patent: 3298236 (1967-01-01), Thomas
patent: 3776042 (1973-12-01), Werra
patent: 3952729 (1976-04-01), Libman
patent: 4010648 (1977-03-01), Harris et al.

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