EVALUATOR FOR THE QUICK SELF-ACTING ANALYSIS OF THE SHARE OF THE ACETALDEHYDE IN THE PRODUCTS MADE OUT OF THE POLYETHYLENE TEREPHTHALATE, IN PARTICULAR, IN THE PRESSED BARS AND THE METHOD OF ITS OPERATION

摘要

FIELD: chemical industry; devices and the methods for the quick automatic extraction of acetaldehyde and determination of its contents in the probes.;SUBSTANCE: the invention is pertaining to the evaluator for extraction of the acetaldehyde and automatic determination of its contents in the probes in the form of the bars made out of the polyethylene terephthalate. The evaluator contains the desorption bay, the system of the analysis with the separating column for extraction of the acetaldehyde, the system of valves for control over the streams of the fluid mediums in the evaluator, the tool for heating the desorption bay. The desorption bay is made with possibility of its air blowing, locations in it of the indicated probe and the pressure buildup. The desorption bay is connected to the tube used for injection of the gaseous probes, providing the injection of the gaseous probe of the acetaldehyde. The probe of the acetaldehyde then is transferred into the separation column.;EFFECT: the invention ensures the quick automatic extraction of acetaldehyde in the products made out of the polyethylene terephthalate and determination of its contents in the probes.;9 cl, 3 dwg