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Liquid phase medium preprocess device of on-line chromatographic study and using method, and used thereof

A technology of pretreatment device and liquid medium, which is applied in the field of chromatographic analysis and can solve the problems of gas inclusion in liquid medium

Active Publication Date: 2011-04-06
SHANGHAI HUAYI ENERGY CHEM
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a chromatographic analysis liquid phase medium pretreatment device to solve the problem of gas inclusion in the liquid phase medium in chromatographic analysis

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  • Liquid phase medium preprocess device of on-line chromatographic study and using method, and used thereof
  • Liquid phase medium preprocess device of on-line chromatographic study and using method, and used thereof

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Embodiment Construction

[0016] The present invention will be further clarified below in conjunction with specific embodiments and accompanying drawings. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. For the experimental methods without specific conditions indicated in the following examples, the conventional conditions or the conditions suggested by the manufacturer are usually followed.

[0017] An on-line chromatographic analysis liquid medium pretreatment device, see Figure 2, there are 5 inlets and outlets on the static separation tank, equipped with six cut-off valves A-F, and switch actions according to a certain program to achieve large flow, anti-blocking and The purpose of basically eliminating air bubbles.

[0018] The working process of the present invention: within one cycle of the chromatograph, on the static separation tank, multiple processes such as sample entry into the ...

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Abstract

The invention relates to the chromatographic analysis field, in particular to the chromatographic analysis liquid-phase medium pretreatment device as well as the using method and the application. The invention discloses a chromatographic analysis liquid-phase medium pretreatment device, including a sample pipe, a tube connected with the chromatograph, a deeffuser, a pipe breaking valve, which is characterized in that the device includes a stationary separation drums of which the upper end is connected with, the sample pipe and the deeffuser, the lower end is connected with the chromatograph by the pipe. In a circulation period of the chromatograph, the sampling, the stationary gettering, the pressurized sample injection, the raffinate evacuation and so on are completed in the stationary separation drums. The chromatographic analysis liquid-phase medium pretreatment device can achieve the goal of large discharge, anti-blocking, bubbles eliminating and investment saving as well.

Description

technical field [0001] The invention relates to the technical field of chromatographic analysis, in particular to an on-line chromatographic analysis liquid medium pretreatment device, a use method and an application thereof. Background technique [0002] Many online chromatographs used for liquid medium composition analysis often encounter sample blockage and gas-carrying problems during the sampling process, which affect the normal operation of the chromatograph, especially the work of online chromatographic analysis. [0003] The common reasons are: thin pipeline, high resistance, low flow rate, and factors such as medium viscosity often lead to sampling interruption; dissolved gas in the liquid is precipitated, especially when sampling from a sampling point with high pressure. (It is also difficult to complete) when implementing gas-liquid separation, causing a large number of air bubbles to be included in the sample. As a result, a series of problems arise: the mainten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/14G01N30/16
Inventor 张以民吴建明屠寅
Owner SHANGHAI HUAYI ENERGY CHEM
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