Adiabatic accelerating rate calorimeter with dynamic thermal inertia correction features

Abstract

The invention discloses an adiabatic accelerating rate calorimeter with dynamic thermal inertia correction features. The adiabatic accelerating rate calorimeter comprises highly symmetrical dual testchannels, a standard heater, an external plugging type spherical reaction cell, a temperature and power measurement module, a system circuit board, and control software for data display and recording.The differences between the adiabatic accelerating rate calorimeter and a classical adiabatic accelerating rate calorimeter in structure and data processing are that: in terms of calorimetry, the adiabatic accelerating rate calorimeter can obtain dynamic thermal inertia factors in an adiabatic reaction process in real time by utilizing heating power of the standard heater measured by means of thetwo channel symmetric structure; and in terms of thermal analysis, for the deficiency that a thermal inertia factor is considered as a constant in the existing thermal analysis kinetics solving method based on adiabatic accelerated calorimetry, a novel kinetics solving method considers the dynamic changes of the thermal inertia factor and combines a non-linear fitting method for kinetics solution. The adiabatic accelerating rate calorimeter is higher in applicability, and is of great significance for improving the accuracy of the chemical reaction heat risk assessment.

Description

technical field [0001] The invention relates to the field of calorimetry technology and instruments for chemical process safety, and more specifically relates to an adiabatic acceleration calorimeter with the feature of dynamic thermal inertia correction. Background technique [0002] For a long time, adiabatic acceleration 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. However, due to structural limitations, the heat released by the chemical reaction is inevitably absorbed by the sample cell during the test chemical reaction process, which affects the test results of thermal behavior parameters. In 1980, Townsend et al first proposed the concept of thermal inertia [1,2] , use the thermal inertia factor to describe the relationship between the heat absorbed by the sample cell and the total heat released by the reaction, and try ...

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Problems solved by technology

[0016] In view of the existing classical adiabatic acceleration calorimetry theory mentioned in the background technology, the thermal inertia factor is regarded as a constant, which leads to problems such as deviations in thermal analysis kinetics research and thermal hazard safety assessment

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