An integrative Device of Multiple-times Material Feeding Reaction and Method Used for Microcalorimeter

Abstract

This invention makes an integrative device of multiple-times material feeding reaction and method used for microcalorimeter public, which is to solve the problem of the current microcalorimeter that it will result in the outrange and even damage of the meter as it can only realize material feeding once instead of multiple times during the semi-batch reaction test. This device can allow the materials to be fed be placed in the material feeding platforms of different heights and make them reach the material feeding platforms of different heights in order through adjusting the height of material feeding paddle during material feeding, rotating and making the materials enter into the reactive tank in batches. And therefore the purpose of multiple-times material feeding is realized. The multiple-times material feeding method of the microcalorimeter exposed in this invention includes five steps. This invention can be used in the semi-batch reaction test conducted with the microcalorimeter, making the reaction realize multiple times of material feeding and preventing the outrange problem during the test process. it reduces the risks in the test process and enlarges the application range of the microcalorimeter .

Description

technical field [0001] The invention belongs to the field of physical and chemical testing, and mainly relates to a multi-feeding and reaction integrated device and method for a microcalorimeter in the reaction heat testing process. Background technique [0002] A semi-batch reaction is one in which at least one reactant is added while the reaction is in progress. Compared with the batch reaction, the semi-batch reaction mainly has two advantages: (1) for the exothermic reaction, the exothermic rate can be controlled by adding materials, so that the reaction exotherm is within a controllable range; (2) if the reaction process There are side reactions, and the gradual addition of the reaction materials helps to maintain the concentration at a low level, which helps to improve the reaction yield. Therefore, the study of semi-batch reaction has more important safety and economic significance. [0003] Among research methods, microcalorimeters have higher calorimetric efficien...

AI Technical Summary

Problems solved by technology

In these two test processes, only one feed can be realized. For the strong exothermic test process (such as nitration reaction, sulfonation reaction, etc.) or the process of side reactions, the test process will have the following problems: (1) due to the material It is added at one time, and there will be severe exothermic heat during the reaction process, and the whole test is not easy to control, which will cause the instrument to exceed the range (such as attached figure 1 As shown), there is even a risk of damaging the instrument; (2) If there are side reactions in the reaction process, one-time feeding will cause the material to be at the maximum concentration at the beginning of the reaction, so that the proportion of side reactions will increase, and the proportion of main reactions will increase. decrease, and the measured calorific value deviates too far from the real value, which cannot faithfully reflect the actual heat of the process

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