Improved end cover structure of reaction calorimeter

Abstract

The invention discloses an improved end cover structure of a reaction calorimeter. The structure comprises an end cover, a reaction container, a jacket, a temperature difference monitoring device anda temperature control circulator, wherein the jacket sleevs the reaction container; the temperature difference monitoring device is used for measuring the temperature difference between the interior of the reaction container and the jacket in real time; a through hole for enabling the temperature difference monitoring device to measure the internal temperature of the reaction container is formed in the end cover; the end cover covers and seals the top of the reaction container; a cavity filled with a heat-conducting medium is formed in the end cover; the end cover is provided with an inlet andan outlet which are communicated with the cavity; the inlet and the outlet are connected with the two ends of the temperature control circulator respectively to form a loop; the temperature control circulator is used for adjusting the temperature of the heat-conducting medium; guide plates are evenly distributed in the cavity; and the temperature control circulator is connected with the temperature difference monitoring device. The temperature of the end cover can be equal to the temperature of a reaction system, so that the heat transfer phenomenon caused by the temperature difference between the interior of the reactor and the end cover is restrained, the heat loss error is eliminated, and the accuracy, environmental applicability and stability of the measurement result of the reactioncalorimeter are improved.

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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