A high-temperature flue gas contact temperature measuring device and its measuring method

Abstract

The invention discloses a high-temperature flue gas contact temperature measuring device and a measuring method thereof. The device comprises: a high-temperature flue gas collection system, a water-cooled heat exchange system, a flue gas component analysis system, an air extraction device, a measuring element, and a data acquisition system. and processing system; the measuring element, the flue gas component analysis system are electrically connected to the data acquisition and processing system; the water-cooled heat exchange system is arranged after the high-temperature flue gas collection system, and the flue gas The component analysis system is arranged at the tail end of the secondary water cooling system, and the exhaust device is connected to the tail end of the secondary water cooling system. The invention uses a water-cooled heat exchange system to cool the high-temperature flue gas to below 1200°C, and calculates the temperature of the high-temperature flue gas by measuring its temperature and the heat absorbed by the cooling medium, thereby realizing high-precision and long-term monitoring of the high-temperature flue gas above 1600°C. Measurement.

Description

technical field [0001] The invention belongs to the technical field of industrial heating equipment and detection and monitoring, and more specifically relates to a high-temperature flue gas contact temperature measuring device and a measuring method thereof. Background technique [0002] For industrial heating equipment such as boilers and kilns, the temperature in the furnace or kiln is one of the very important operating conditions. Accurate measurement of temperature change and distribution is of great significance for combustion organization and optimization, product quality control, etc. In the combustion area, the temperature is often above 1600 °C, and the temperature of the ultra-high temperature kiln can be as high as 1800 °C. At present, contact temperature sensors such as thermocouples cannot achieve long-term continuous measurement for high-temperature flue gas temperatures above 1600 °C. Non-contact measurement methods such as optical methods are commonly used ...

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Problems solved by technology

[0005] In view of this, the present invention provides a high-temperature flue gas contact temperature measuring device and its measurement method for the problem that the existing technology cannot realize long-term and high-precision measurement of high-temperature flue gas above 1600 °C

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