Integral sampling probe system for high temperature in situ processing

Abstract

The present invention discloses a high temperature in-situ treatment integrated sampling probe system, which comprises a sampling probe, wherein the sampling probe is provided with a sampling pipe and a filtration chamber, the filtration chamber is provided with a sample gas outlet, the sample gas outlet of the sampling probe is connected with a laser measurement gas chamber, the gas outlet of the laser measurement gas chamber is connected with a pneumatic sampling pump, the left side and the right side of the laser measurement gas chamber are respectively provided with a laser transmitter and a laser receiver, the filtration chamber of the sampling probe, the laser measurement gas chamber, the laser transmitter, the laser receiver and the pneumatic sampling pump are arranged inside a probe protection box, and an electric heater is arranged in the probe protection box. The high temperature in-situ treatment integrated sampling probe system has the following beneficial effects that: the integrated structure is formed, the system structure is simple, the accuracy of the detection of the trace amount of escaping ammonia is improved, the maintenance during the use process is reduced, the use period is prolonged, and the investment cost is reduced.

Description

technical field [0001] The invention relates to the technical field of on-line gas analysis, in particular to an integrated sampling probe system for high-temperature in-situ processing. Background technique [0002] Denitrification is the most important segment of the environmental protection industry with the largest consumption and high technical difficulty. It is necessary to accurately monitor the trace amount of escaped ammonia with a laser trace ammonia analyzer to ensure the safe production and operation of the air preheater. The research report concluded that: at 146-232°C, ammonia and sulfur trioxide will react to form ammonium bisulfate and become liquid, which will not only cause ammonia loss, but also seriously reduce the detection accuracy of escaped ammonia, and also make the subsequent air The resistance of the preheater increases, or even blocked. Regarding the quantitative test surface, the control value of the denitrification device in normal operation is...

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Problems solved by technology

[0008] In order to solve the above problems, the present invention proposes a high-temperature in-situ processing integrated sampling probe system, the filter cavity of the sampling probe, the laser emitting end, the laser measurement chamber, the laser receiving end, the electric heater and the pneumatic sampling pump are placed on the probe together. In the protective box, an integral structure is formed, which makes the system structure simple, easy to install, reduces equipment maintenance, and solves the problems of high cost and low accuracy during operation

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