Differential thermal-gas chromatography combined analysis device

A technology of gas chromatography and analysis equipment, which is applied in the field of batch coupling equipment and differential thermal-gas chromatography coupling analysis equipment, and can solve the problems that are not suitable for automatic operation, etc.

Inactive Publication Date: 2010-10-20
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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Problems solved by technology

The above method and device are not suitabl

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  • Differential thermal-gas chromatography combined analysis device
  • Differential thermal-gas chromatography combined analysis device
  • Differential thermal-gas chromatography combined analysis device

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Embodiment Construction

[0046] The example of this matter is based on the traditional differential thermal-gas chromatography intermittent coupling analysis device, adding gas sampling components 3, automatic air intake control mechanism, and using the computer to collect the differential thermal signal of the differential thermal analyzer 1, the furnace temperature signal and The temperature signal at the outlet point 8 of the exhaust gas of the differential thermal analyzer 1 is predicted and judged by the time series curve of these signals to judge whether there is escaped gas in the exhaust gas of the differential thermal analyzer 1, and the top is automatically opened after the escaped gas is found. The empty sampling device is used to introduce the quantitative tail gas into the gas chromatograph 2 for component separation and detection. This combined analysis device can realize automatic operation and is suitable for operation in an unattended environment.

[0047] Combine below Figure 1-Fig...

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Abstract

The invention provides a differential thermal-gas chromatography combined analysis device which belongs to the field of analysis instruments and relates to an intermittent combination device of a differential thermal analyzer and a gas chromatographic analyzer. The differential thermal-gas chromatography combined analysis device comprises the differential thermal analyzer (1) and the gas chromatographic analyzer (2); a gas sampling component (3) and a temperature sensor are arranged at a gas outlet of the different thermal analyzer (1), wherein the output of the gas sampling component (3) is connected to a sampling port of the gas chromatographic analyzer (2) through an automatic air inlet control mechanism. In the invention, the gas sampling component (3) and the automatic air inlet control mechanism are arranged on the basis of the traditional differential thermal-gas chromatography intermittent combined analysis device, a differential thermal signal, a furnace temperature signal and a temperature signal at a tail gas outlet of the differential thermal analyzer (1) are acquired in real time, and the predicting discrimination is carried out according to a time sequence curve of all signals so as to control that tail gas is guided into the gas chromatographic analyzer (2) to carry out ingredient separation and detection. The differential thermal-gas chromatography combined analysis device can realize automated operation and is suitable for operations without manual supervision.

Description

technical field [0001] The invention relates to a differential thermal-gas chromatographic analysis device, which belongs to the field of analytical instruments and relates to a batch combined device of a differential thermal analyzer and a gas chromatographic analyzer. Background technique [0002] Differential thermal-gas chromatography batch analysis device appeared in the 1970s, using differential thermal analysis (also known as DTA, under the control of temperature program, to measure the temperature T of the substance s and the temperature T of the reference r It is a technology of temperature difference and temperature relationship), which is used to analyze the composition of the outgassing during the pyrolysis of substances, and the key technology is to detect the moment when the outgassing occurs. The traditional differential thermal-gas chromatography analysis device directly introduces the tail gas of the differential calorimeter into the thermal conductivity de...

Claims

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Application Information

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IPC IPC(8): G01N25/48
Inventor 潘斌邓昊
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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