Method for determining material temperature field in rotary kiln
A material temperature and measurement method technology, applied in the field of rotary kiln detection, can solve the problems of affecting the life of the thermometer, inaccurate measurement results, increased energy consumption, etc., and achieves easy industrial production, cheap and easy-to-obtain raw materials, and low synthesis costs. Effect
Inactive Publication Date: 2014-05-14
CENT SOUTH UNIV
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Problems solved by technology
[0005] The object of the present invention is to provide a method and device for measuring the temperature field of materials in a rotary kiln in order to solve the above problems, so as to overcome the inaccurate measurement results and insufficient protection of the measuring device in the prior art and affect the life of the thermometer. The increase in energy consumption caused by unknown working conditions in the kiln, the lack of automatic control of the calcination process, and the ability to work normally in harsh environments with high temperature, dust, and humidity
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[0024] In order to make the technical means, creative features, work flow, and use methods of the present invention achieve the purpose and effect easily understood, the present invention will be further described below in conjunction with specific embodiments.
[0025] 1. The infrared thermometer and its driving platform are installed in a stainless steel protective box with dust-proof and dust-exhausting design. The structure of the protective box is as follows figure 1 As shown, the top of the stainless steel protective box faces the side of the kiln head and extends the dust baffle 1 to reduce the probability of dust falling in the upper space through the square hole on the box wall and entering the interior; , Carry out enclosure with protective cover 4. The bottom edge of the box is made up of inclined planes 3, and there is an ash leakage groove 6 at the bottom. This structure makes it difficult to accumulate dust in the box. There is a compressed air pipe inlet on th...
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The invention discloses a method for determining a material temperature distribution field in a rotary kiln, and the method comprises the steps as follows: obtaining the temperatures of certain point materials in a manner of infrared temperature measurement, installing an infrared thermometer on a movable table outside a kiln head of the rotary kiln, protecting with a stainless steel protection box and driving the movable table through a stepping motor, so that a thermometer lens obtains the temperature data of a plurality of point materials distributed along the axial direction of a kiln body inside the rotary kiln in a vertically-rotating and scanning manner. The method has the benefits that the real-time dynamic spatial domain modeling of the material temperature field in the rotary kiln can be realized; a temperature measurement device can be effectively protected, and the damage to the temperature measurement device caused by high temperature on the site and high dust severe environment is reduced; and the existing backward artificial control manner that a lead kiln operator watches fire is favorable for being completely changed to lay a solid foundation for the introduction of optimizing decision and intelligent control and the improvement on the automatic level of a rotary kiln calcining process.
Description
technical field [0001] The invention relates to the detection of a rotary kiln in the field of general industrial production, in particular to an automatic measurement method and a protection device for the real-time temperature distribution field of materials in the rotary kiln. Background technique [0002] Carbon calcination rotary kiln is an important equipment for petroleum coke calcination in the production process of anode carbon and graphite products for electrolytic aluminum. , forming three temperature zones in the kiln, namely the preheating zone, the calcining zone and the cooling zone. The preheating zone is a section of the kiln body that is close to the kiln tail in the axial direction. Materials move from the kiln tail to the kiln head and are first heated by the preheating zone to discharge moisture and part of the volatile matter, and then enter the calcination zone. The calcining zone is the section with the highest temperature in the kiln, generally reac...
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IPC IPC(8): F27B7/42
Inventor 彭辉陈清吴军尹亚光
Owner CENT SOUTH UNIV