Volatile organic pollutant control contrast column box and using method

Abstract

The invention relates to a volatile organic pollutant control contrast column box and a using method. The volatile organic pollutant control contrast column box comprises a control front column box, a control front quantitative loop sampling device, a control front detector, a control front chromatographic column, a control back column box, a control back quantitative loop sampling device, a control back detector, a control chromatographic column and switching valves. Control front gas and control back gas are fed into the control front chromatographic column and the control front detector as well as the control back chromatographic column and the control back detector respectively through the switching valves, so that the control front concentration, control back concentration and control back component concentration are obtained respectively, the control efficiency is output and stored by calculating the specific value of the total concentration of the control front gas and the total concentration of the control back gas, and the components of the control back gas are output and stored. The volatile organic pollutant control contrast column box has the technical effects of stable and reliable performance, good precision, high efficiency, low cost, safety in installation and debugging and convenience.

Description

technical field [0001] The invention relates to a comparison device before and after treatment of volatile organic pollutants, in particular to a comparative column box for treatment of volatile organic pollutants. Background technique [0002] Most of the volatile organic compounds (Volatile Organic Compounds, VOCs) are toxic, harmful, and have certain carcinogenicity; they participate in photochemical reactions and form photochemical smog; some of them can destroy the ozone layer. Industries involving VOCs emissions include petrochemicals, fine chemicals, spraying, packaging and printing, pharmaceutical and pesticide manufacturing, semiconductor and electronic product manufacturing, wood-based panels and wooden furniture manufacturing, leather, enameled wire, shoemaking, coatings, inks, adhesives Chemical production, metal casting, etc. There are many industries, and the VOCs produced in each industry are various and complex in composition. Common components include hydroc...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of the existing measurement system, the present invention provides a volatile organic pollutant treatment comparison column box, which can obtain the treatment efficiency and discharge amount by detecting the comparison and monitoring of the total amount of gas before and after treatment. The specific technical solution is: A comparison column box for the treatment of various volatile organic pollutants, including the column box before treatment, the quantitative loop sampling device before treatment, the detector before treatment, the chromatographic column before treatment, the column box after treatment, the quantitative loop sampling device after treatment, and the detector after treatment 1. The chromatographic column after treatment and the switching valve are characterized in that: the pre-treatment column box and the post-treatment column box are composed of a box body, an insulating layer, and a heating layer from the outside to the inside, and the inside is a cavity, and the pre-treatment chromatographic column is respectively fixed in the cavity , After treatment, the chromatographic column, the quantitative loop sampling device before treatment, the detector before treatment, the quantitative loop sampling device after treatment, and the detector after treatment are fixed outside the box, and the inlet pipe of the chromatographic column before treatment is connected to the quantitative loop sampling device before treatment. The gas port is connected, the gas outlet pipe is connected to the inlet of the detector before treatment, the inlet pipe of the chromatographic column after treatment is connected to the gas outlet of the quantitative loop sampling device after treatment, the gas outlet is connected to the inlet of the detector after treatment, and the detector before treatment is connected to the gas outlet of the quantitative loop sampling device after treatment. After treatment, the inlet pipes of the detectors are respectively connected with the switching valves

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