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Regeneration treatment method for invalidated capillary chromatographic column

A capillary chromatographic column and processing method technology, applied in the field of gas chromatograph components, can solve the problems of pollution, loss of separation ability, failure of the chromatographic column, etc., and achieve the effects of prolonging service life, performance recovery and convenient operation

Active Publication Date: 2013-03-20
STATE GRID CORP OF CHINA +3
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Problems solved by technology

The instrument is configured with 2 capillary columns, among which the model is HP-MOLESIEVE capillary column for separating H 2 , O 2 、CH 4 , CO, due to the influence of oil vapor, carrier gas, moisture in the air, and tiny dust in the gas released from insulating oil, it is easily polluted by various impurities and becomes invalid, causing the HP-MOLESIEVE chromatographic column to lose its ability to separate components. The practice is to replace the new chromatographic column after the chromatographic column fails, and the method of recovering its performance through the regeneration of the chromatographic column has not been recorded yet.

Method used

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Effect test

Embodiment 1

[0017] In view of the HP-MOLESIEVE capillary chromatographic column failure, which can only be replaced in the past, the present invention develops a regeneration process for the HP-MOLESIEVE glass capillary chromatographic column failure. Its process method is as follows:

[0018] Remove the front capillary chromatographic column (HPPLOT-Q 30m, 0.53mm, 40um), and then connect the inlet end of the back capillary chromatographic column (HP-MOLESIEVE 15m, 0.53mm, 50.0um) to the inlet, and the outlet end is air-proof, according to The 6890N gas chromatograph needs to be turned on to start the chromatograph. After the self-test of the instrument is completed, check whether there is gas outflow from the outlet of the chromatographic column. If there is gas outflow, it means that the connection is correct. Then set the working conditions of the 6890N gas chromatograph as follows: change the protection temperature of the column oven from 150°C to 400°C, and make the injector heating,...

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Abstract

The invention relates to the technical field of electric transmission and transformation, and in particular relates to a regeneration treatment method specific to an invalidated capillary chromatographic column HP-MOLESIEVE. The regeneration treatment method provided by the invention comprises the steps: (1) treating a capillary chromatographic column in an early stage; (2) opening a chromatograph for detection; (3) setting working conditions of a gas chromatograph 6890N; and (4) ending the treatment and detection. The invention has the beneficial effects that by adopting the regeneration treatment method for the invalidated capillary chromatographic column, the problem on regeneration treatment of the invalidated capillary chromatographic column HP-MOLESIEVE is solved, the service life of the capillary chromatographic column HP-MOLESIEVE is prolonged, and a treatment effect meets the requirement for testing a dissolved gas component content in insulating oil. The regeneration treatment method for the invalidated capillary chromatographic column is simple, convenient and practical, is convenient to operate and can be used for restoring the performance of the capillary chromatographic column.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation, in particular to a HP-MOLESIEVE capillary, a component of a gas chromatograph aimed at analyzing the content of dissolved gas components in insulating oil by gas chromatography for judging internal faults of oil-filled electrical equipment Regeneration treatment method after chromatographic column failure. Background technique [0002] Using gas chromatography to analyze the content of dissolved gas components in insulating oil and to judge the internal faults of oil-filled electrical equipment has been widely used in the power industry. The 6890N gas chromatograph is a high-end chromatographic instrument produced by Agilent Corporation of the United States. Our hospital uses it to analyze the dissolved gas in insulating oil and judge the internal faults of oil-filled electrical equipment. The instrument is configured with 2 capillary columns, among which the model ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/50B01D15/10
Inventor 路自强郑勇李玉海张晖
Owner STATE GRID CORP OF CHINA
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