FIELD: machine building.
SUBSTANCE: process flow is a flow of stock fed into steam conversion device or escaping therefrom at, at least, 200°C. Note here that process flow components are in vapor phase. Proposed method comprises tapping the lateral flow from process flow and cooling it to temperature above dew point. Cooled lateral flow is analysed by spectroscopy in near IR band to obtain spectrum describing near-IR-absorbing components of process flow. Obtained spectrum is correlated for making calibration models from near-IR-spectroscopy using chemometrics methods for determination of concentration and/or partial pressure of one of process flow components in respond to defined concentration and/or partial pressure.
EFFECT: higher efficiency of conversion.
25 cl, 2 dwg
