Interface thermocatalytic system

Abstract

The invention discloses an interface thermocatalytic system which comprises a carrier, a catalyst loaded on the carrier, and a heat source for providing heat for the catalyst. The carrier is located on the reaction liquid level or independent of the reaction liquid level, and the reaction liquid is controlled to be conveyed to the carrier, so that the catalyst on the carrier is in a non-submerged state. The carrier and / or the catalyst have / has a photothermal effect, and the heat source is a light source used for irradiating the carrier and / or the catalyst. According to the invention, the catalyst is not completely submerged in the reaction liquid, the reaction site of the catalyst is at the interface of the catalyst and the reaction liquid, and the generated product is not influenced by the reaction liquid and directly escapes from the interface, so that lower product concentration and higher reactant concentration are always kept near the reaction site of the catalyst, forward movement of chemical equilibrium is promoted, higher chemical reaction conversion rate is achieved, traditional concentrated sulfuric acid is avoided, and the system is green and environmentally friendly.

Description

technical field [0001] The invention relates to a catalytic system for chemical catalytic reaction, in particular to an interface thermal catalytic system. Background technique [0002] Esters are very important compounds in the industrial society and are widely used in pharmaceuticals, spices, coatings and other fields. Ethyl acetate is one of the most representative ones, through the esterification reaction of ethanol and acetic acid The production of ethyl acetate is one of the most common chemical reactions in industry, but due to the existence of thermodynamic chemical equilibrium, the conversion rate of this reaction can only be maintained at a constant value at a certain reaction temperature. [0003] In order to increase the conversion rate of the reaction, the usual practice is to add a reactant in excess to promote the forward progress of the chemical reaction to increase the conversion rate. In the industry, the cheap ethanol is often used in excess, but this will...

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Problems solved by technology

[0002] Ester compounds are very important compounds in the industrial society, and are widely used in the fields of pharmaceuticals, spices, coatings, etc., and ethyl acetate is one of the most representative ones, through the esterification reaction of ethanol and acetic acid The production of ethyl acetate is one of the most common chemical reactions in industry, but due to the existence of thermodynamic chemical equilibrium, the conversion rate of this reaction can only be maintained at a constant value at a certain reaction temperature

[0003] In order to increase the conversion rate of the reaction, the usual practice is to add a reactant in excess to promote the forward progress of the chemical reaction to increase the conversion rate. In the industry, the cheap ethanol is often used in excess, but this will cause a lot of unreacted ethanol to be separated. The recovery and separation process will cause a lot of energy consumption. Another way is to promote the forward progress of the chemical reaction by adding an excessive amount of water-absorbing agent, such as concentrated sulfuric acid. Mix evenly with the reactants of the esterification reaction. After the reaction, these waste acids need to consume a lot of energy to recover, or be discharged to the environment, which will cause serious environmental pollution problems. Therefore, it can be used without introducing excessive reactants and without It is a difficult problem that the industry generally hopes to solve to achieve high-efficiency reaction conversion rate under the condition of introducing excess concentrated sulfuric acid catalyst

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