Magnetic-transmission-type thermocouple online temperature measuring device

Abstract

The invention discloses a magnetic-transmission-type thermocouple online temperature measuring device which comprises a quartz tube reactor (1), a thermocouple (2), an upper fixed magnetic transmission sliding sleeve (3), a lower slidable magnetic transmission sliding sleeve (4), a catalyst bed layer (5) and quartz cotton (6). The device effectively combines magnetic transmission technology with thermocouple temperature measuring technology and can online and accurately measure catalytic reaction temperature in real time without having influence on normal conducting of catalytic reaction, so that accurate description on a catalytic reaction temperature field is improved effectively, the problems of unitary temperature measuring mode and limitation on real-time temperature measuring of existing fixed thermocouples are solved, studying level of the catalytic reaction process is further improved, and the device has the advantages of flexibility in position control of the thermocouple, safety, simplicity and convenience in use, high dynamic sealability and uniform reaction gas concentration distribution.

Description

technical field [0001] The invention belongs to the technical field of industrial catalytic combustion, and in particular relates to a magnetic transmission type thermocouple online temperature measuring device. Background technique [0002] In the field of industrial catalytic combustion (also known as catalytic oxidation), catalytic reaction has always been a research hotspot, and the accurate measurement of reaction temperature is the most important thing in the research of reaction process. At present, many laboratories use fixed-bed reactors to study catalytic reactions. The thermocouples used are usually fixedly inserted in the reactor to measure the temperature of the furnace or the temperature of the fixed position of the catalytic bed, which cannot measure the actual occurrence of the catalytic reaction well. The real-time temperature of the area has problems such as fixed and single temperature measurement method and poor online flexibility. Patent CN201120259081....

AI Technical Summary

Problems solved by technology

At present, many laboratories use fixed-bed reactors to study catalytic reactions. The thermocouples used are usually fixedly inserted in the reactor to measure the temperature of the furnace or the temperature of the fixed position of the catalytic bed, which cannot measure the actual occurrence of the catalytic reaction well. The real-time temperature of the area has problems such as fixed and single temperature measurement method and poor online flexibility

Patent CN201120259081.9 discloses a wear-resistant thermocouple used in a catalytic cracking unit, including a temperature measuring element and a casing for the temperature measuring element. The casing for the temperature measuring element has a scoured surface and a protective wall outside. The thermocouple has a long service life and can be widely used for temperature measurement of catalytic cracking units; patent CN201410466967.9 discloses a magnetic transmission device, including: a magnetic shaft, an outer magnetic barrel and an isolation barrel, and the outer magnetic barrel is movably connected to the isolation barrel The outside of the isolation barrel is located on one side of the isolation barrel, and the magnetic conduction shaft is movably connected to the inside of the isolation barrel, and is located on the other side of the isolation barrel; when the outer magnetic barrel is rotated, the magnetic conduction shaft is driven to rotate, which solves the problem of motor output in the prior art. Disadvantages and deficiencies of the large pressure difference at the shaft and the inability to achieve effective dynamic sealing

However, the method of real-time on-line detection of catalytic reaction temperature using magnetic transmission thermocouples has not yet been reported.

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