High-heat-discharge-quantity refrigerating and heating temperature control system for reaction kettle

Abstract

The invention relates to a high-heat-discharge-quantity refrigerating and heating temperature control system for a reaction kettle. The high-heat-discharge-quantity refrigerating and heating temperature control system comprises a reaction kettle, wherein one end of the reaction kettle is sequentially connected with a heating pipe, an electric proportioning regulating valve, a first cold storage tank and an evaporation heat exchanger through a fourth pipeline, the output end of the evaporation heat exchanger is sequentially connected with a first circulation pump, a first one-way valve, an expansion tank and an exhaust valve through a first pipeline, the exhaust valve is connected to the other end of the reaction kettle through a fifth pipeline, the two ends of the evaporation heat exchanger are connected with a refrigerating machine, the refrigerating machine is structurally characterized in that one end of the evaporation heat exchanger is sequentially connected in series with a gas-liquid separator, a compressor, an oil separator, a condenser, a drying filter, a second cold storage tank, an electromagnetic valve and an expansion valve through a third pipeline, the outer end of the expansion valve is connected with the other end of the evaporation heat exchanger through an eighth pipeline, the refrigerating machine is positioned between the electromagnetic valve and the second cold storage tank and is connected with the third pipeline through the second pipeline, and an electronic expansion valve is arranged on the second pipeline. The work reliability is good.

Description

technical field [0001] The invention relates to the technical field of temperature control devices, in particular to a cooling and heating temperature control system for a reaction kettle with high heat release. Background technique [0002] Chemical synthesis reactions are often accompanied by endothermic and exothermic reactions, often due to large heat release, large heat absorption, and large feedback lag of the reactor itself, resulting in poor temperature control accuracy or out of control, resulting in final product quality or production accidents. [0003] The temperature control device in the prior art usually adopts refrigeration compressor technology and often cannot directly cool down from high temperature. When it is used to cool down at a temperature higher than 55 degrees, the compressor is often protected or damaged. [0004] In addition, the temperature is lowered from a high temperature of 250 degrees to normal temperature through cooling water or cold air,...

AI Technical Summary

Problems solved by technology

[0005] Temperature control method: Generally, the outlet temperature of the control system is used. Because the heat transfer device such as the reactor has a large lag in heat transfer, the lag between the outlet temperature of the control system and the temperature to be controlled by the actual target is too large, and the temperature control accuracy is often poor, and the fluctuation is too large. , affecting product quality

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