Device for detecting water content of coal tar

Abstract

The invention relates to a device for detecting the water content of coal tar. The device comprises a flask, a condensing tube, a U-shaped tube, a bent tube, a drainage bent tube and a testing tube, wherein the flask adopts a double opening flask; the bent tube in which a thermometer is arranged is communicated with the vertical opening end of the flask; the bent tube is communicated with the condensing tube; the condensing tube is transversely and obliquely arranged; the outlet end is relatively lower in position; the outlet end is communicated with the U-shaped tube; an outlet at the lower end of the U-shaped tube is inserted into a working solvent of a double-opened testing tube; and the side opening of the testing tube is communicated with that of the flash through the drainage bent tube. According to the device, a built-in thermometer is arranged inside the bent tube which is communicated with the vertical opening of the flask; the thermometer is arranged in the inner wall of the bent tube; the thermometer is integrally designed with the inner wall of the bent tube and is a part of the inner wall of the bent tube; the temperature of the fraction can be tested in real time, and the heating temperature can be controlled conveniently; and by utilizing the device, the process of testing the water content of the coal tar is more convenient and rigorous, and the testing result error is smaller.

Description

technical field [0001] The invention relates to a device for detecting water content in tar, in particular to a device for detecting water content in coal tar. Background technique [0002] Coal tar is a liquid product obtained in the process of coal dry distillation. It contains more than 400 compounds that have been identified. It is a very important chemical raw material. The water content of coal tar must be strictly controlled. In the national standard of coal tar products, water content is included as an important technical index. In the national standard, the water content of No. 1 coal tar is not more than 3.0%, and the water content of No. 2 coal tar is not Greater than 4.0%. Therefore, the determination of the moisture content in coal tar is very important for the evaluation of coal tar products. [0003] There are roughly two methods for measuring the moisture content in existing coal tar, one is a chemical method, and the other is a physical method. Chemical ...

AI Technical Summary

Problems solved by technology

However, in the prior art, most of the devices for physically fractionating water cannot detect the fraction temperature in real time, and it is difficult to confirm the constant temperature range maintained by heating

In addition, most of the measuring devices place the condensation tube vertically. Although continuous improvements are made, it still cannot completely solve the conflict and collision between the drop of condensed water and the rise of water vapor, resulting in water droplets breaking and splashing into the elbow to flow back into the distillation flask. , which increases the error of the water content determination results in coal tar

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