Multistage filtering and continuous sampling system and method for gaseous pollutant

Abstract

The invention discloses a multistage filtering and continuous sampling system for a gaseous pollutant. The multistage filtering and continuous sampling system comprises a sampling gun, a drying and cooling mechanism, an extraction mechanism, a superfine filter, a first flow meter, a second flow meter and gas analyzer, wherein the superfine filter is used for filtering miniature granular fly ash; the sampling gun is connected with the drying and cooling mechanism; moreover, a multistage filtering mechanism is arranged in the sampling gun; an input end of the superfine filter is connected with the drying and cooling mechanism through the extraction mechanism; an output end of the superfine filter is connected with the gas analyzer; the first flow meter and the second flow meter are arranged at the input end and the output end of the superfine filter respectively. The invention also discloses a multistage filtering and continuous sampling method for the gaseous pollutant. Through the multistage filtering and continuous sampling system, the continuous measurement of an acidic gaseous pollutant in a high-humidity and high-ash flue gas can be realized, particularly, at places of a refuse incineration power plant and the like; a reliable data basis is provided for the monitoring of a pollutant and the evaluation of equipment performance at the places of the refuse incineration power plant and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection and environmental monitoring, in particular to a multi-stage filtering continuous sampling system for gas pollutants and a method thereof. Background technique [0002] With the continuous development of China's social economy and the acceleration of urbanization, the amount of urban domestic waste has increased rapidly. In 2015, China's urban domestic waste output was 191 million tons, and the form of garbage siege is becoming more and more serious. Compared with other waste treatment methods, such as: melting and solidification, chemical agent stabilization, chemical extraction, etc., the waste incineration power generation process is favored by various countries for its advantages of "recycling, harmlessness, and reduction" of waste treatment in the fastest way. , has become a garbage disposal method recognized and adopted by many countries. [0003] With the continuous progr...

AI Technical Summary

Problems solved by technology

However, due to the fact that the moisture content of municipal solid waste in my country is as high as 50%, and the ash content accounts for about 20%, it presents the characteristics of large moisture, low calorific value, high ash content, and complex composition. high content

At the inlet of the reaction tower, when the traditional pretreatment method is used, the filter device is seriously blocked

The traditional measurement method takes 3 to 5 minutes, the filter device is blocked, and the continuous measurement of acid gas pollutants in the flue gas cannot be realized

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