GAS-FLUID EXTRACTION PROCESS AND COAXIAL MASS EXCHANGER TO THIS END Russian patent published in 2014 - IPC B01D11/04 G01N30/06 

FIELD: process engineering.

SUBSTANCE: invention is intended for gas-fluid extraction. Proposed method comprises management of fluid and carrier gas flows, formation of phase interphase and mass exchange with subsequent separation of extracted fluid and carrier gas enriched in volatile components. Fluid axial flow incoming to the chamber is transformed into two coaxial flows separated by carrier gas. Extraction in analytical systems is carried in one step whereat fluid and gas phases migrate or in two steps. First, sample is forced via chamber at stationary gas phase normal or decreased pressure. Then, at concentration phase equilibrium, formed cloud saturated with volatile components of carrier gas vapour-gas mix is pushed from said chamber into analyser gas cell whereat carrier gas pressure equals barometric pressure. Device comprises flow-through tubular mass exchange chamber arranged vertically and having coaxial cavity with hydrophilic surface connected at top end with diverging coaxial slit.

EFFECT: higher degree of extraction, sensitivity and accuracy of these systems.

4 cl 7 dwg