An Improved Structure of the End Cover of a Reaction Calorimeter

Abstract

The invention discloses an improved structure of an end cover of a reaction calorimeter, comprising an end cover, a reaction vessel, a jacket, a temperature difference monitoring device and a temperature control circulator, the jacket is sleeved outside the reaction vessel, and the temperature difference monitoring device is used for real-time measurement of the reaction The temperature difference between the inside of the container and the jacket, the end cover is provided with a through hole for the temperature difference monitoring device to measure the internal temperature of the reaction vessel, the end cover is combined and sealed on the top of the reaction vessel, the end cover is provided with a cavity filled with heat transfer medium, and the end cover is provided with The inlet and outlet of the cavity are connected, and the inlet and outlet are respectively connected to both ends of the temperature control circulator to form a loop. The temperature control circulator is used to adjust the temperature of the heat transfer medium. The cavity is evenly arranged with deflectors, and the temperature control circulator is connected to the temperature difference monitoring device; The temperature of the end cover of the invention can be equal to the temperature of the reaction system, which curbs the heat transfer phenomenon caused by the temperature difference between the inside of the reactor and the end cover, thereby eliminating the error of heat loss, improving the accuracy of the measurement results of the reaction calorimeter, environmental applicability and stability.

Description

technical field [0001] The invention relates to the field of heat measurement in a reaction process, in particular to an improved structure of an end cover of a reaction calorimeter. Background technique [0002] For a long time, reaction calorimeter has been used as an ideal tool for analyzing chemical reactions, and it has been widely used in chemical thermal hazard assessment, process safety, process scale-up and other fields. As the preferred instrument for the thermal risk research of the reaction process, the reaction calorimeter obtains the thermal safety parameters related to the reaction process by measuring the temperature, pressure and heat flow in the chemical reaction in real time, so as to effectively guide the process development and safe production, and provide supporting protection measure. [0003] The reaction calorimeter mainly measures the heat change in the reaction process. According to the input heat = heat accumulation + output heat, the main calori...

AI Technical Summary

Problems solved by technology

Due to the existence of temperature difference, the internal system of the reaction vessel will exchange heat with the external environment through the end cover to generate heat loss, and when the temperature difference gradient is larger, the heat loss phenomenon will become more serious, which will significantly affect the accurate measurement of the calorimetric experiment

In view of the difficulty of measuring heat loss at the end cover, the existing commercial reaction calorimeters have not taken effective measures at the design level. In actual use, appropriate insulation materials are often wrapped outside the end cover to reduce heat loss, but this method cannot Eliminate the temperature gradient between the inner layer of the reaction and the end cap, and the heat transfer phenomenon at the end cap still exists, such as figure 1 shown

[0016] Aiming at the inaccurate calorific value of existing commercial reaction calorimeters, the inventors improved the end cap structure of reaction calorimeters based on years of industry experience

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