Experimental device and test method for high-temperature calcination reaction characteristics under flow and temperature coordinated alternating heating mode
A technology of high-temperature calcination and heating method, which is applied in the direction of measuring devices, material thermal analysis, instruments, etc., can solve the problems of unclear and limited influence of the temperature uniformity of the bulk material bed, and realize the coordinated alternating heating of flow rate and temperature , widen the range, and adjust the effect of alternating parameters
Active Publication Date: 2021-04-13
XI AN JIAOTONG UNIV
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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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[0039] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
[0040] see figure 1 , the experimental device of the present invention includes raw material calcination equipment and a high-temperature air delivery system connected to the raw material calcination equipment, an air cooling system, and a data acquisition control system 12;
[0041] The raw material calcination equipment includes a particle filling tank 11, a bypass pipeline 7, a switching valve two 9, and a switching valve one 10, and the particle filling tank 11 is connected end to end with the bypass pipeline 7;
[0042] The high-temperature air conveying system includes a fan 2 and an air heater 6 connected to the fan 2 through an intake pipeline. A filter 1 is installed at the inlet of the fan 2, and the outlet of the fan 2 is respectively connected to the exhaust pipeline and the intake pipeline through a three-way pipe joint. , wherein ...
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An experimental device and test method for high-temperature calcination reaction characteristics under flow and temperature coordinated alternating heating mode, including raw material calcination equipment, high-temperature air delivery system, air cooling system, several temperature and pressure sensors, and a data acquisition and control system. The present invention can realize the research on the calcination reaction characteristics of raw materials under both constant heating conditions and alternating heating conditions, explore the influence mechanism of gas flow rate, temperature, raw material size, heating strategy, etc. on high-temperature calcination reaction strengthening and homogenization, and can Carry out research on the internal relationship between heating strategies and the properties of raw materials calcined products. The invention can overcome the disadvantage of single heating mode in the existing experimental system, has a relatively large experimental temperature and flow range, and is easy to operate and easy to control. The invention can carry out experimental tests on different reaction strengthening and homogenization technologies, and provide guidance for the design and development of new calcination processes and new calcination kilns.
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. ...
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IPC IPC(8): G01N25/00G01D21/02
CPCG01D21/02G01N25/00
Inventor 何雅玲于洋汤松臻童自翔李冬张轩恺胡鑫
Owner XI AN JIAOTONG UNIV