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Device for preparing or collecting adsorptive gaseous hydrocarbon in rock

A technology for gaseous hydrocarbons and rocks, which is used in the preparation of samples for testing, sampling devices, etc., and can solve problems such as low sample preparation efficiency, incomplete extraction and collection, and influence on quantitative analysis of gaseous hydrocarbons.

Active Publication Date: 2007-10-10
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The gaseous hydrocarbons washed with lye are concentrated and enriched in the lower part of the hemostat 12 in the pipeline 11, but the material of the pipeline 11 is silicone rubber, which has a high air permeability, and it is easy to cause gaseous hydrocarbons to diffuse and leak. The gaseous hydrocarbons obtained by this method are difficult to preserve, and it is not convenient for analysis of other items
[0004] Although the device is simple in structure and easy to operate, it still has the following obvious shortcomings: (1) when the pressure in the flat-bottomed flask 7 was equal to the pressure in the gas washing bottle 15, the remaining mixed gas in the flat-bottomed flask 7 and in the pipeline 14 would be Stop flowing into the gas washing bottle 15, so the mixed gas produced by acid desorption and desorption cannot be completely purified by alkali washing, so the extraction and collection are incomplete, especially affecting the quantitative analysis of gaseous hydrocarbons in rocks
(2) The gaseous hydrocarbons purified by lye can be collected and stored without a fixed container, and can only be temporarily kept in latex tubes. Therefore, the obtained gas samples are not convenient for analysis of other items (such as chromatography, mass spectrometry, isotope, etc.) , but also affect the continuity of sample preparation, low sample preparation efficiency

Method used

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  • Device for preparing or collecting adsorptive gaseous hydrocarbon in rock
  • Device for preparing or collecting adsorptive gaseous hydrocarbon in rock
  • Device for preparing or collecting adsorptive gaseous hydrocarbon in rock

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with accompanying drawing;

[0023] In order to achieve the above purpose, a specific embodiment of the present invention is "Acid Degassing and Degassing Apparatus for Gaseous Hydrocarbons in Rocks", the schematic diagram of which is shown in Fig. 2 .

[0024] The device or instrument mainly includes:

[0025] 1. Acidolysis and degassing combination device 201;

[0026] 2. Gas collector 206;

[0027] 3. Alkaline purification balance system;

[0028] 4. Infusion exhaust system;

[0029] 5. Vacuum pumping system.

[0030] The acidolysis and degassing combination device 201 described therein is the core device of the device or instrument used for rock acidolysis and degassing according to the present invention. Its structure can be seen in FIG. 3 and mainly includes a closed container; a regulating system; a stirring device;

[0031] (1) Airtight container: it is mainly composed of cylinder body 3...

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Abstract

A device used for preparing or collecting gas state hydrocarbon absorbed in rock consists of acidolysis and degassing integrated unit, gas collector, base liquid purification balance system, fluid transport air vent unit and vacuum-pumping unit. It is featured as using acid to decompose carbonate mineral in rock collecting and storing obtained gas state hydrocarbon for carrying out more accurate analysis on geologic sample.

Description

technical field [0001] The invention relates to a device for preparing or collecting gaseous hydrocarbons adsorbed in rocks, in particular to a device that uses acid to decompose carbonate minerals in geological samples such as rocks and soils, and collects released gaseous hydrocarbons device or instrument. Background technique [0002] In the geochemical research of natural gas, the comparison between natural gas and gas source rocks, and the evaluation of gas source rocks are all based on the analysis results of gaseous hydrocarbons in gas source rocks. The key to the accuracy of the analysis results is how to completely extract and collect the gaseous hydrocarbons in the rock during the analysis process. Extracting gaseous hydrocarbons in rocks by acidolysis degassing is a more effective degassing collection method at present. This method usually uses acids (such as H 3 PO 4 ) decomposes carbonate minerals in geological samples such as rocks and soils, so that the gas...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N1/34
Inventor 张美珍把立强张渠李广友王强陈伟钧
Owner CHINA PETROLEUM & CHEM CORP
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