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AssigneeChemische Werke Huls Aktiengesellschaft
InventorsJosef Kalka, Walter Waskonig, Karl Lueg
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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.
A process for the withdrawal of a sample from a reaction vessel under pressure and containing a dissolved and/or emulsified solid-liquid dispersion which comprises a liquified gas and which is sensitive to mechanical stress, which comprises the steps of providing a cannula and communicant connected pressure-proof injection syringe filled with an inert protective fluid;
Apparatus for the withdrawal of a sample from a reaction vessel under pressure containing a dissolved and/or emulsified solid-liquid dispersion which contains liquefied gases and is sensitive to mechanical stress, and comprising a pressure-proof elastic self-sealing diaphragm;
Dependencies are inferred from the claim text.