Full-automatic measuring method of chemical reaction between carbon dioxide and coal or coke

Abstract

The invention relates to a full-automatic measuring method of the chemical reaction between carbon dioxide and coal or coke. A measuring device comprises a controller, a reaction furnace, a gas purifying system, an infrared gas analyzer and a gas source device. The controller is connected with the reaction furnace, thus realizing the automatic control on the temperature of the reaction furnace; and the controller is connected with the gas source device and the gas purifying system, thus realizing the flow detection and control, as well as gas conversion, and opening and closing control of carbon dioxide before and after the reaction. The invention has the advantages that the full-automatic control mode is adopted for measuring, the measured experiment data has high accuracy, a large quantity of labor is saved, and the work efficiency is high.

Description

technical field [0001] The invention relates to a method for measuring a high-temperature chemical reaction test between a dry distillation sample of coal and carbon dioxide. The performance parameters measured by the method fully meet the national standard and are better than the national standard. The accuracy of the measurement result is extremely high and the method is scientific. Background technique [0002] The process principle stipulated in the national standard "Measurement Method for Chemical Reactivity of Coal to Carbon Dioxide" (hereinafter referred to as: GB) is: first dry distillation of the coal sample to remove volatiles (if the sample is coke, no dry distillation treatment is required). Then it is screened and coke residue with a certain particle size is selected and put into the reaction tube for heating. After heating to a certain temperature, with a constant flow of CO 2 Injection reacts with the sample. Determination of CO in the gas after the reactio...

AI Technical Summary

Problems solved by technology

[0017] 1) This method is a manual analyzer, which is cumbersome to operate, has low precision and slow response speed, cannot realize online analysis, and cannot meet the needs of production development;

[0018] 2) The volume of the comb tube has an influence on the analysis results;

[0019] 3) It takes a long time for the dynamic analysis and measurement of the Austenitometer, and there are certain limitations in the place, and attention must also be paid to the completeness of the chemical reaction, otherwise the readings are not allowed to mislead the production;

[0021] 5) Although the one-time purchase cost is low, the long-term operation cost is high. Excluding the cost of analysts, it costs at least more than 10,000 yuan to buy reagents and glassware each year, and the gas must be manually sampled and analyzed in the laboratory. The operational skills and "attitude" of the operator have a great influence on the accuracy of the analysis

[0024] 1. The reaction tube of the measuring instrument is sealed at both ends by means of rubber plugs, and loosening and leakage often occur during application;

[0025] 2. Every sample filling and thermocouple insertion and removal requires carefulness, and the work efficiency is low and the process is cumbersome;

This requires the operator not to make any mistakes, otherwise the test will be scrapped

In addition, generally the shortest measurement work of this test takes 1 hour, and the longest measurement takes nearly 2 hours, and the operator is almost always in the process of "busy". The attitude of work responsibility is extremely high, and the labor intensity of the operators is also very high

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