Multi-zone adaptive temperature control device applied to esterification reaction

Abstract

The invention relates to a multi-zone adaptive temperature control device applied to esterification reaction. In the temperature control device, a temperature sampling module is connected with an MCUto collect the temperature of a tubular reactor and the temperature of a heating wire, and feed back the temperatures to the MCU; a current sampling module is connected with the MCU to collect the current of the heating wire and feeds back the current to the MCU; a voltage sampling module is connected with the MCU to collect the voltage of the heating wire and feeds back the voltage to the MCU; and a driving switch circuit module is connected with the MCU to receive a control signal of the MCU and controls ON / OFF of the heating wire. According to the type and characteristic, provided by a display input module, of the reaction substances, the temperature change trend in the tubular reactor is predetermined by combining the temperature of the reaction substance and the temperature of the heating wire, the driving switch circuit module controls the ON / OFF state of the heating wire, transition of temperature in the tubular furnace reactor is smooth, the temperature is controlled accuratelyand rapidly, heating is uniform, and the efficiency of esterification reaction is improved.

Description

technical field [0001] The invention relates to the field of temperature control of esterification reaction, in particular to a multi-region self-adaptive temperature control device applied to esterification reaction. Background technique [0002] Esterification is a type of organic chemical reaction in which alcohols or olefins react with carboxylic acids or oxygen-containing inorganic acids to form esters and water. The esters produced are important fine chemical products and are widely used in fragrances, daily chemicals, Food, medicine, rubber, paint and other industries. In the process of producing ester products, the reaction temperature plays a vital role in the esterification reaction, and the accuracy and uniformity of its control will directly affect the conversion rate of the reaction and the selectivity of the esterification product, as well as the catalyst stability. And then affect the yield of ester products and catalyst life. [0003] The current temperatu...

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Problems solved by technology

Then affect the yield of ester products and catalyst life

[0003] At present, the temperature control device used in the esterification reaction has the following shortcomings: 1. The temperature distribution is uneven, and there are temperature differences in different positions in the tubular reactor; 2. The temperature control fluctuates greatly

Since the esterification reaction is an exothermic reaction, the heat released during the reaction makes the local temperature in the reactor too high, which makes the temperature of the catalyst bed fluctuate greatly, which has an adverse effect on the catalytic reaction.

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