ISOTHERMAL DIFFERENTIATION ANALYSIS METHOD FOR GAS-SOLID REACTION AND ISOTHERMAL DIFFERENTIATION ANALYZER

摘要

Disclosed are an isothermal differentiation method for a gas-solid reaction and an isothermal differentiation analyzer. The method feeds reactants in the form of micro fine particles into a fluidized bed by a transient pulse sample injecting system (II), combines transient pulse gaseous sample injection of the reactants in the form of micro fine particles with online monitoring of the compositional concentration and flow rate of the gaseous products, and achieves rapid heating of the reactant stocks and the isothermal differentiation under isothermal conditions. The transient pulse sample injecting system (II) comprises: a solid sample injecting tube (15), a pulse electromagnetic valve (14) and a gas cylinder A (34). The sample gas A in the gas cylinder A (34) is injected into the solid sample injecting tube (15) in a transient pulse controlled by the pulse electromagnetic valve (14), so as to achieve transient pulse sample injection. The method can achieve the conditions where the gases are approximately in plug flows and the particle mixing is approximately in complete mixing flows in the micro reactor, to reinforce heat and mass transfer efficiency, and realizes isothermal differentiation of the reaction, so that the reaction tests are closer to the intrinsic characteristics of the chemical reactions.