Experimental device for high-temperature calcination reaction characteristics in flow and temperature collaborative alternating heating mode and test method thereof

Abstract

The invention discloses an experimental device for high-temperature calcination reaction characteristics in a flow and temperature collaborative alternating heating mode and a test method thereof. Theexperimental device comprises raw material calcination equipment, a high-temperature air conveying system, an air cooling system, a plurality of temperature and pressure sensors and a data acquisition control system. According to the invention, the research on the characteristics of the raw material calcining reaction under the conditions of constant heating and alternating heating can be realized, the influence mechanism of gas flow, temperature, raw material size, heating strategy and the like on the strengthening and homogenization of the high-temperature calcining reaction is discussed, and the internal relation research on the heating strategy and the performance of the raw material calcining product can be carried out. The experimental device can overcome the defect that an existingexperimental system is single in heating mode, has a large experimental temperature and flow interval, and is easy and convenient to operate and easy to control. According to the invention, experimental tests can be carried out on different reaction strengthening and homogenizing technologies, and guidance is provided for design and development of a novel calcining process and a novel calcining kiln.

Description

technical field [0001] The invention belongs to the technical field of raw material calcination reaction intensification in metallurgy, chemical industry and other industries, and in particular relates to an experimental device and a test method for high-temperature calcination reaction characteristics under the collaborative alternating heating mode of flow rate and temperature. Background technique [0002] The raw material calcination process is a common production process in the fields of metallurgy and chemical industry, and consumes a lot of energy. Taking the lime production process as an example, according to the statistics of the International Lime Association, China's lime production in 2017 was 230 million tons, and at least 23 million tons of standard coal are needed to produce these limes. Non-isothermal characteristics are common in raw material calcining kilns, resulting in low energy utilization and uneven product quality, which needs to be further improved. ...

AI Technical Summary

Problems solved by technology

However, the current research is limited to the theoretical and numerical simulation stage, and there is a large simplification with the actual situation, so it is urgent to test

At the same time, the effect of the alternating heating method on the temperature uniformity of the bulk material bed is still unclear. Therefore, a comprehensive experimental device that can realize the calcination test of the bulk material bed under the alternating heating method is urgently needed.

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