A fast vocs gas multi-component chromatographic separation device

Abstract

A fast multi-component chromatographic separator for a VOCs gas comprises a ten-way valve, a quantification ring, a first chromatographic column, a second chromatographic column, a third chromatographic column, a solenoid valve, a first carrying gas, a second carrying gas, a third carrying gas, a sample gas, a first damping tube, a second damping tube, a third damping tube, and a detector in sequence.

Description

technical field [0001] The invention relates to a sampling device, in particular to a fast VOCs gas multi-component chromatographic separation device. Background technique [0002] A gas chromatograph is a device that separates mixed gas samples and determines the information of each component. The key components are the sampling separation device and detector. During the measurement process, the gas to be tested containing different components needs to be separated in the separation device. The separated gas enters the detector in sequence according to the sequence of separation, and the specific content of each component is determined according to the response of the detector to the gas. [0003] In current chromatographic separation devices, in order to achieve rapid separation of various substances, two or more multi-port valves are often used to cooperate with specific multiple chromatographic columns to achieve the separation effect. This approach has the following pr...

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Problems solved by technology

[0004] 1. High instrument cost;

[0005] 2. The measurement speed is slow;

[0006] 3. The residue of chromatographic column is relatively serious, which affects the accuracy and stability of measurement;

[0007] 4. Generally, only one kind of substance can be separated and detected. To achieve the analysis effect of two kinds of substances or more, the separation device is relatively complicated.

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