Method for sampling special organic gas in flue gas

Abstract

The invention relates to a method for sampling a special organic gas in a flue gas. The method comprises the following steps: allowing the flue gas to enter through the inner tube of a sleeve from the inlet of a sampling gun, adjusting the temperature, intercepting particles by a filter cylinder, condensing the flue gas by a condensation device, allowing the obtained condensate liquid into a cooling and liquid removing bottle, trapping the cooled and dried gas by a trapping bottle to remove dioxin substances, further collecting by a washing bottle, and allowing the gas to go through a dryer, a gas flow meter, a thermometer and a sampling pump to complete the whole sampling process. A whole flue gas sampling pipeline adopting a full glass structure has the advantages of corrosion resistance, no chemical reaction, convenient cleaning, and prevention of the loss caused by the adsorption or contamination of the acquired sample by the wall surface of a tube wall utensil; the jacket glass sampling gun can heat or cool the acquired flue gas by hot or cold air entering through an external layer; the condensate liquid collection bottle having scales can rapidly judge whether there is severe gas leakage in the sampling process or not; and the flue gas is cooled, condensed, and dehydrated, and then adsorbs a sampling agent to guarantee a high sampling efficiency.

Description

Technical field [0001] The invention relates to the technical fields of environmental protection and solid waste treatment and disposal, and in particular to a method for sampling special organic gases in flue gas. Background technique [0002] Incineration is one of the important means of solid waste treatment, which has the functions of volume reduction, harmlessness and stabilization. However, the flue gas produced by the incineration process contains various pollutants, which can be divided into particulate matter, CO, acid gas, heavy metals and organic pollutants according to the nature of the pollutants. Among them, dioxin, which is an organic pollutant, is a persistent organic pollutant and is currently the most toxic substance known in the world. Dioxin pollution has also been a common concern in countries around the world in recent years. On February 14, 1997, the International Center for Cancer Research of the World Health Organization designated 2,3,7,8-tetrachlorodib...

AI Technical Summary

Problems solved by technology

During the operation of the above existing sampling system, a large amount of flue gas condensate is directly formed at the adsorption and trapping site or its upstream, and drips through the adsorption resin, which is unfavorable to the adsorption and sampling process of dioxins; in addition, for For flue gas with low temperature, the heating method of traditional sampling gun system adopts electric heating with heat preservation, and the equipment is bulky and inconvenient to carry; while for high-temperature flue gas sampling, the traditional sampling gun system needs to be replaced with a cooling method with cooling water. The basic conditions of the site are relatively high, and the operation is very inconvenient

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