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Component analyzer for hydrocarbon gas mixture with oxygen compounds

A technology for compositional analysis and mixed gases, applied in the field of gas chromatograph analyzers

Active Publication Date: 2012-08-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, none of the existing analysis devices can complete the full composition analysis of this complex gas sample on one chromatograph. If a full composition analysis is required, at least two chromatographs and two injections are required.

Method used

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  • Component analyzer for hydrocarbon gas mixture with oxygen compounds
  • Component analyzer for hydrocarbon gas mixture with oxygen compounds
  • Component analyzer for hydrocarbon gas mixture with oxygen compounds

Examples

Experimental program
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Effect test

example 1

[0038] according to figure 1 Connect the column and detector, CO 2 The cutting column 5 selects PORAPAK Q packed column, the length of the column is 0.5 m, and the inner diameter of the column is 2 mm; 2 Separation column 6 selects PORAPAK Q packed column, column length 2 meters, column inner diameter 2 millimeters; Permanent gas separation column 7 selects 5A molecular sieve packed column, column length 2 meters, column inner diameter 2 millimeters; Polar capillary column 8 selects Agilent company to produce CP-LOWOX capillary column with a column length of 10 meters and an inner diameter of 0.53 mm; the hydrocarbon separation capillary column 9 is made of Al 2 o 3 Capillary column, column length 30 meters, column diameter 0.53 mm.

[0039] Ten-way switching valve 1 and CO 2 Cut column 5 and CO 2 The diameter of the interface of the separation column 6 is 1 / 8 inch; the connecting pipe between the interfaces is a 1 / 8 inch stainless steel pipe.

[0040] The diameter of th...

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Abstract

A component analyzer for a hydrocarbon gas mixture with oxygen compounds includes two sample tubes that are connected in series, wherein the first sample tube (13) is connected with a permanent gas and methane detecting system; the system includes a CO2 cutting column (5), a CO2 separating column (6), a permanent gas separating column (7) and a thermal conductivity detector (18) that are sequentially connected in series; a second pipeline connected with the thermal conductivity detector (18) is arranged behind the CO2 separating column (6); the second sample tube (14) is connected with a hydrocarbon and oxygen component detecting system; the system includes a split sampling opening (15), a polar capillary column (8), a hydrocarbon separating capillary column (9) and a first hydrogen flame ionization detector (17) that are sequentially connected in series; and another pipeline connected with a second hydrogen flame ionization detector (16) is arranged behind the polar capillary column (8). The component analyzer can complete component analysis of the mixed multiple gas mixture with the oxygen compounds within C6.

Description

technical field [0001] The invention is a gas chromatograph analyzer, in particular, a gas chromatograph used for composition analysis of multiple mixed gases. Background technique [0002] In the petrochemical field, some new energy technologies and new processes emerge in an endless stream, including the technology of producing low-carbon olefins from non-petroleum hydrocarbons, such as methanol conversion to olefins, methanol conversion to propylene, dimethyl ether, methanol conversion to propylene, and dimethyl ether Clean energy technology and F-T synthesis technology that form a mixed fuel with liquefied petroleum gas. Although these new technologies are quite different, there is a common need to test the full composition of their gaseous products. The commonality of such gases is in the mixed gaseous hydrocarbons (including permanent gases and hydrocarbons, wherein the permanent gases mainly include: hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, hydroc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/14G01N30/78G01N30/46
Inventor 王亚敏李长秀
Owner CHINA PETROLEUM & CHEM CORP
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