FIELD: instrumentation.
SUBSTANCE: claimed method is based on the model of waste gas neutralisation unit temperature distribution, in particular, a catalyst, as well as a SCR catalyst or the filter of particles, with axially flowing waste gases and in the neutralisation unit of an axially segmented configuration, axial heat transfer between the segments, primarily, via waste gas, and with radial heat transfer from the neutralisation perimeter into an ambient medium. This model differentiates between the stationary and transient operating modes subject to the temperature variation of waste gases measured in preset time intervals relative to a temporary mean magnitude. Besides, radial heat transfer over the neutralisation unit perimeter is calculated with the due allowance of heat transfer resistance Rc and heat transfer from the waste gases to the unit segments with an allowance for a heat transfer factor k. The temperature departure calculated by the model downstream of the neutralisation unit from the averaged temperature measured under stationary conditions by the correlation of the said heat transfer resistance Rc. Note here that under transient operating conditions, the heat transfer factor k is correlated.
EFFECT: maintenance of maximum concentration limits.
6 cl, 9 dwg
