A waste incineration flue gas online analysis system

Abstract

The invention discloses an on-line analysis system for waste incineration flue gas. The on-line analysis system for waste incineration flue gas sequentially includes: a sampling probe, an external heating sampling pipeline, a sampling pump, and an internal heating sampling pipeline along the transmission direction of the sample gas. and a gas analyzer; the sampling probe contains a sample gas filter that can remove dust in the sample gas; the sampling pump is accompanied by a heater to maintain the temperature of the sample gas; the gas analyzer is suitable for analysis and detection up to 200°C high temperature sample gas. After the sample gas is collected by the sampling probe, it is transmitted to the gas analyzer through the external heating sampling pipeline, sampling pump, and internal heating sampling pipeline. When the sample gas enters the gas analyzer, the composition of the sample gas collected by the sampling probe is consistent, improving High-temperature sample gas that ensures the measurement accuracy of each component content in the sample gas.

Description

technical field [0001] The invention relates to gas analysis technology, in particular to an online analysis system for waste incineration flue gas. Background technique [0002] Gas analysis systems usually include: sampling probes, electric heating sampling lines, filters, refrigerators, dehumidifiers, sampling pumps, gas analyzers, etc. At present, industrial gas monitoring generally adopts the direct extraction method. The direct extraction method is to use a special heating sampling probe to extract the sample gas (such as the sample gas of waste incineration flue gas) from the flue or discharge port, and use the electric heating sampling pipeline to carry out heat tracing transmission on the sample gas, so that the sample gas is in the Condensation does not occur during transmission; when the sample gas is transmitted to the analysis cabinet (including part of the electric heating sampling pipeline, filter, refrigerator, dehumidifier, sampling pump, gas analyzer, etc....

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned gas analysis system only adds a heating device to the sampling probe and the electric heating sampling line, and the temperature is relatively low (about 120°C)

When the sample gas enters the filter and refrigerator, because the sample gas loses heat tracing, the temperature drops very quickly, causing some highly water-soluble gases (such as HF, NH3, HCl, etc.) to quickly combine with the condensed liquid water to form The acid / alkali will flow away, which will make the measured value of some components smaller, which will directly affect the detection accuracy

Images