Temperature field detection method and device of calcination rotary kiln

Abstract

The invention discloses a method for detecting the temperature field of a calcination rotary kiln and a device thereof. The method comprises the following steps: mounting a group of temperature thermocouples in the inner lining of the kiln body of the calcination rotary kiln in the axial direction of the kiln body; determining the amount and the distribution clearance of the thermocouples according to the requirements for measuring the precision of temperatures on the preheating section, the calcining section and the cooling section of the calcination rotary kiln; and connecting each thermocouple with the wireless communication box mounted on the shell of the calcination rotary kiln body, so that the wireless communication box can transmit the temperature signal of each thermocouple to a computer analysis system on a real-time basis. The invention has the advantages that the real-time measurement of the distribution of the temperature field of the overall rotary kiln is realized; the most authentic material temperatures can be directly measured without being interfered by the flue gas and the flame in the kiln; the construction cost of the complete set of devices is far lower than that of the prior infrared thermometer system; the spare parts are cheap, and the maintenance and the replacement are convenient, therefore, the production cost and the maintenance cost are reduced; and the technical characteristic is reliable, therefore, the failure rate is low. As accurate measurement is realized, the invention provides a calcination control system with strong support for improving the automatization.

Description

technical field [0001] The invention belongs to the field of temperature measurement, in particular to a temperature field detection method and device for measuring a calcining rotary kiln. Background technique [0002] In many industrial production links such as metallurgy, building materials, and chemical industry, solid granular materials need to be calcined at high temperature using a rotary kiln. The calcining rotary kiln generally consists of a continuously rotating cylindrical kiln body placed obliquely, a feed pipe, a discharge pipe, and a guide. Fan, blower, fuel nozzle, corresponding temperature and pressure detection instruments, and computer intelligent control or manual control system. The kiln body in the production process can be roughly divided into preheating section, calcination section and cooling section. The solid granular material enters the rotary kiln through the feed pipe. With the continuous rotation of the rotary kiln with a small inclination angle...

AI Technical Summary

Problems solved by technology

In order to solve the problems of large measurement error, high investment cost of measurement equipment and inadaptability to automatic control in the prior art

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