METHOD OF MONITORING PAN-PRECURSOR THERMAL STABILIZATION DURING CARBON FIBER PRODUCTION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC D01F9/12 D01F9/32 

FIELD: technological processes.

SUBSTANCE: group of inventions relates to a method of producing carbon fiber, specifically a method of monitoring the thermal stabilization of a PAN precursor in the process of producing carbon fiber and a device for carrying out said method. Method of optimizing the PAN-precursor thermal stabilization process when producing carbon fiber involves multi-step heat treatment of the fiber in a through-type oxidation furnace with the possibility of controlling the gaseous medium using at least one monitoring device at each thermal stabilization step. Device for monitoring the thermal stabilization process includes a sampler installed in the zone of high pressure of the gaseous medium, a system for preparing the sample and gas medium analyzer with possibility of data transmission to process parameters control unit, made with possibility to adjust parameters taking into account concentration of carbon monoxide (CO).

EFFECT: group of inventions provides optimization of the process mode, in particular, continuous monitoring of carbon monoxide concentration, and reduction of time for monitoring of the process mode, thereby providing instantaneous effect of temperature adjustment, higher level of safety of thermal stabilization process, elimination of occurrence of emergency situation with self-ignition of material and production of non-uniformly processed fiber.

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