Portable low-adsorption high-temperature pretreatment device

Abstract

The invention discloses a portable low-adsorption high-temperature pretreatment device, and belongs to the technical field of high-temperature flue gas analysis equipment. The inner wall, making contact with gas, of the equipment is coated with a silicon coating, adsorption of a pipeline to ammonia gas can be greatly reduced, it is guaranteed that an analysis instrument can directly measure the concentration value of the ammonia gas, the detachable coating type heating sleeve is arranged and is connected through the VCR joint, so that the equipment is convenient and flexible to combine, has the portability of conventional pretreatment, can be used for field detection, can also be used in movable or fixed occasions such as laboratories, and has multiple purposes, and the high-temperature treatment box adopts an omnibearing radiation heating mode, so that the heating effect is better, and the temperature control precision is higher; and heat insulation materials are adopted outside so that the outer surface temperature is ensured to be lower than 50 DEG C. The integration and intelligence degree is high, the operation is simple and convenient, and remote control and data transmission of portable equipment such as a mobile phone can be realized.

Description

technical field [0001] The invention belongs to the technical field of high-temperature flue gas analysis equipment; in particular, it is a portable low-adsorption high-temperature pretreatment device. Background technique [0002] The ultra-low emission high-temperature flue gas analysis system is widely used in third-party testing institutions such as the Electric Power Research Institute and the Special Inspection Institute. At present, the pre-pretreatment device of the high-temperature flue gas analysis system on the market generally uses 316L stainless steel as the main material. 316L stainless steel has the advantages of corrosion resistance, high temperature resistance, and plasticity, etc., but it will absorb ammonia gas, causing the instrument to fail to detect super Low-concentration ammonia gas (0-3ppm, also known as "ammonia escape" or "escaping ammonia"), and ammonia gas will be absorbed by most metal materials, although some non-metallic materials will not abs...

AI Technical Summary

Problems solved by technology

At present, the pre-pretreatment device of the high-temperature flue gas analysis system on the market generally uses 316L stainless steel as the main material. 316L stainless steel has the advantages of corrosion resistance, high temperature resistance, and plasticity, etc., but it will absorb ammonia gas, causing the instrument to fail to detect super Low-concentration ammonia gas (0-3ppm, also known as "ammonia escape" or "escaping ammonia"), and ammonia gas will be absorbed by most metal materials, although some non-metallic materials will not absorb ammonia gas, such as glass, but glass belongs to Fragile products and the joints cannot be well sealed, which will also cause the loss of ammonia gas. Therefore, the current on-site detection of ultra-low emission ammonia gas concentration basically adopts manual sampling and chemical analysis. This method of sampling is complicated and takes a long time ( The average sampling time is about 20 minutes), and in order to obtain more data, continuous manual sampling is required, which consumes a lot of time, and the data is not real-time. Therefore, a high-precision flue gas analysis capability, remote The advent of portable high-temperature preconditioning units with operational capabilities is imminent

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