Pressure swing catalytic method and device for catalytic oxidation reaction

Abstract

The invention discloses a pressure-variable catalyzing method and device for a catalytic oxidation reaction. The method comprises the steps that the reaction atmosphere pressure in a reaction chamber is increased when the catalytic oxidation reaction starts, and heat is generated to promote the reaction; after the reaction is conducted for a period of time, the pressure is instantaneously decreased, and the residual reactants thoroughly react under the action of the remaining heat; through several cycles of pressure-variable operation, the reactants are thoroughly oxidized, and gas is exhausted. The specific device comprises the pressure-variable catalytic oxidation reaction chamber, a catalyst layer (8) arranged in the pressure-variable catalytic oxidation reaction chamber, an external gas inlet (6) and a gas outlet (7). According to the method and device, a pressure-variable catalyzing technique is adopted, the equipment size is small, the occupied space is small, and the cost and space for transforming and upgrading an old technology are conveniently reduced; the heating effect is generated and the molecular properties are changed through pressure variation, therefore, the catalytic reaction is conveniently conducted, and the heat utilization rate is high; direct electric heating is not adopted in the technique, therefore, the safety problem is avoided, and the applicability is higher.

Description

technical field [0001] This patent relates to the technical field of chemical machinery structure, in particular to a pressure swing catalytic method and device for catalytic oxidation reaction. Background technique [0002] For gas-phase catalytic oxidation reactions, such as figure 1 As shown, the principle is that the reactant uses the surface of the catalyst as the medium for the gas-solid phase oxidation reaction, and burns flamelessly under heating conditions, and oxidizes and decomposes the organic compound into a harmless product CO 2 and H2O. At present, heating is an indispensable condition, and resistance furnaces or electric heating jackets are usually used. In addition, electrocatalysis requires direct power supply. [0003] In the prior art, heating has always been an indispensable condition for gas-phase catalytic oxidation, which can provide the required energy for the reaction. So far, the means used for heating are generally heating holding furnaces or h...

AI Technical Summary

Problems solved by technology

[0004] Traditional heating methods inevitably use large-volume, high-energy-consuming heating equipment, especially in industrial catalytic applications, and electric heating limits the scope of application of catalytic oxidation technology to a certain extent, such as the petroleum industry, flammable and explosive spaces, etc. , is not conducive to the safety hazards caused by electric heating

In addition, the existing catalytic oxidation technology is limited to the heating method, and does not act on the reaction atmosphere in other ways to promote the reaction.

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