CN1465974A - Double chromatographic column natural gas composition separation method with precolumn counter-blowing function - Google Patents
Double chromatographic column natural gas composition separation method with precolumn counter-blowing function Download PDFInfo
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- CN1465974A CN1465974A CNA021122903A CN02112290A CN1465974A CN 1465974 A CN1465974 A CN 1465974A CN A021122903 A CNA021122903 A CN A021122903A CN 02112290 A CN02112290 A CN 02112290A CN 1465974 A CN1465974 A CN 1465974A
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- chromatogram
- separating column
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000000926 separation method Methods 0.000 title claims abstract description 80
- 238000007664 blowing Methods 0.000 title claims abstract description 30
- 239000003345 natural gas Substances 0.000 title claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 44
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 38
- 238000001228 spectrum Methods 0.000 claims description 27
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 24
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 22
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims description 22
- 239000000470 constituent Substances 0.000 claims description 20
- 239000011435 rock Substances 0.000 claims description 14
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 12
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 11
- 239000001282 iso-butane Substances 0.000 claims description 11
- 239000001294 propane Substances 0.000 claims description 11
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 11
- 239000003208 petroleum Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
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Abstract
The invention refers to a separating method of the components of the double-chromatograph column natural gas with pre-column and reverse-blowing function in the gas-phase chromatograph. It includes the following steps: 1. set separating columns, selecting two separating columns as two chromatograph pre-separation columns; 2. pre-separate, sending the obtained gas sample to the first separating column for pre-separation; 3. switch the separating step, making the second separating column continue attending the separation, until the components of the set natural gas fully separated, meanwhile, inputting the reverse-blowing gas into the first separating column to blow the heavy components out. It can effectively separate the components C1-C5.
Description
Technical field
The present invention relates to a kind of gas chromatographic technique, promptly a kind of separation method that is used for the on-the-spot gas component of petroleum prospecting relates in particular to a kind of separation method of the double-colored spectrum column natural gas component with the pre-column blowing function.
Background technology
In petroleum prospecting, the gaseous sample that the on-the-spot mud degassing is obtained to petroleum drilling is delivered to gas chromatograph and is carried out qualitative and quantitative analysis.In order to improve the correctness of gas detection data, after sending into a gaseous sample and detecting, the heavy constituent blow-back that is trapped in the gas flow path after detecting must be gone out outside the instrument, thereby guarantee the consistance that detecting instrument detects at gaseous sample next time.
What prior art was used for that the flow path system of the gas chromatograph of the on-the-spot mud gas analysis of petroleum prospecting adopts usually is the dual flow path mode with blowing function, i.e. twin columns double fluid journey mode (model of making as Shenkai Sicence and Technology Engineering Co., Ltd., Shanghai be 924 hydrogen flame color spectrometers adopt promptly be twin columns double fluid journey modes).Described twin columns double fluid journey operation method is: adopt two cover analytical columns and in conjunction with the system of back-flushing technique, when detecting for the first time, a post carries out compartment analysis, another root post carries out blowback work; When detecting for the second time, the last time is that the post of blowback carries out analytical work, and the last time is that the post of analyzing carries out blowback work, analyzes blowback mutually mutually thereby form two cover systems.
Isolation technics in the above-mentioned prior art gas chromatograph, though can carry out the separation of gas chromatography to the mud sample gas component that outgases, and the gas detection data can be provided,, the defective of Cun Zaiing is in actual applications:
1. because prior art gas chromatograph flow path system adopts is that two cover systems are analyzed mutually, blowback mutually makes it the system architecture complexity;
2. because prior art gas chromatograph flow path system adopts is that two cover systems are the dual flow path operation method, its complex structure and complex operation, so reliability is lower;
3. because prior art gas chromatograph flow path system adopts is two cover systems, can't accomplish that two stalk separating columns are identical, even can't guarantee that two cover operating conditionss are identical, therefore, also can't obtain the crash consistency of analysis result.
Summary of the invention
The object of the present invention is to provide a kind of separation method of the double-colored spectrum column natural gas component with the pre-column blowing function, it can finish analysis and blowback work to rock gas in two separating columns of a cover system, and draws the analysis result of the on-the-spot rock gas data of petroleum prospecting fast.
The object of the present invention is achieved like this:
A kind of separation method of the double-colored spectrum column natural gas component with the pre-column blowing function is characterized in may further comprise the steps:
The first, set the separating column step, at first selected separating column 1 and separating column 2 are set at chromatogram pre-separation post 1 with separating column 1, and separating column 2 is set at chromatogram master separating column 2;
The second, the pre-separation step, it is that chromatogram pre-separation post 1 carries out pre-separation work that the gaseous sample that the petroleum prospecting scene is obtained is delivered to separating column 1;
The 3rd, switch separating step, when separating column 1 is after the gas component that sets in the chromatogram pre-separation post 1 is done pre-separation, separating column 2 is that chromatogram master separating column 2 continues to participate in mask work, simultaneously, be that chromatogram pre-separation post 1 oppositely leads to into blowback air to separating column 1, separating column 2 is that chromatogram master separating column 2 continues to separate, reach fully up to the gas component that sets and to separate, and blowback air will to be trapped in separating column 1 be that heavy constituent blowback in the chromatogram pre-separation post 1 goes out outside the separating column 1.
At the separation method of the double-colored spectrum column natural gas component of above-mentioned band pre-column blowing function, wherein, in described step 1, described separating column 1 is that chromatogram pre-separation post 1 is also for cutting post in advance.
Separation method in the double-colored spectrum column natural gas component of above-mentioned band pre-column blowing function, wherein, in described step 2, described gaseous sample comprises methane in the rock gas, ethane, propane, isobutane, normal butane and isopentane, n-pentane and subsequent heavy constituent, and these heavy constituent are the compound that is higher than behind the rock gas n-pentane.
At the separation method of the double-colored spectrum column natural gas component of above-mentioned band pre-column blowing function, wherein, in described step 2, the heavy constituent in the gas that the petroleum prospecting scene is obtained are captured in the chromatogram pre-separation post 1.
Separation method in the double-colored spectrum column natural gas component of above-mentioned band pre-column blowing function, wherein, in described step 3, the gas component that separates in the described chromatogram pre-separation post 1 is methane, ethane, propane, isobutane, normal butane and isopentane, n-pentane.
At the separation method of the double-colored spectrum column natural gas component of above-mentioned band pre-column blowing function, wherein, in described step 3, it is the components that are higher than n-pentane in the gas component that described blowback goes out separating column 1 outer heavy constituent.
Separation method in the double-colored spectrum column natural gas component of above-mentioned band pre-column blowing function, wherein, be one of following to time of the analytical cycle of methane, ethane, propane, isobutane, normal butane, isopentane, n-pentane in the described separation method: 30 seconds, 60 seconds, 90 seconds, 120 seconds, 180 seconds.
The present invention, the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function owing to adopted technique scheme, makes it to compare with the separation method of gas component in the prior art, has following advantage and good effect:
1. simple in structure and good reliability.
The present invention finishes analysis and blowback to rock gas owing to adopt a cover system (comprising that pre-column is that separating column 1 and principal post are separating column 2) of being made up of double-colored spectrum separating column, and is therefore not only simple in structure, and reliability is improved;
2. piece-rate system favorable reproducibility.
The present invention is because each separation all is to finish on identical pre-column 1 and principal post 2, so the operating conditions of system is identical, and data repeat easily thus, thus the separation favorable reproducibility that obtains.
3. has the function that captures heavy constituent.
The present invention is owing to the heavy constituent that can capture in the pre-separation post in the rock gas, and by introducing blowback air, therefore can easily the heavy constituent blowback that is trapped in the pre-separation post be gone out outside the pre-separation post, and for next operation provides conditionally complete identical condition, thereby can obtain conforming analysis result.
Description of drawings
One embodiment of the separation method by following double-colored spectrum column natural gas component to band pre-column blowing function of the present invention can further understand purpose of the present invention, specific structural features and advantage in conjunction with the description of its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the analysis state synoptic diagram according to the separation method of the double-colored spectrum column natural gas component of the band pre-column blowing function of the present invention's proposition;
Fig. 2 is the analysis switching state synoptic diagram of two chromatographic columns in the separation method of double-colored spectrum column natural gas component of band pre-column blowing function of the present invention;
Fig. 3 is the analytical cycle synoptic diagram of separation method of the double-colored spectrum column natural gas component of band pre-column blowing function of the present invention.
Embodiment
See also illustrated in figures 1 and 2, they be band pre-column blowing function of the present invention double-colored spectrum column natural gas component separation method the analysis state synoptic diagram and analyze the switching state synoptic diagram.The separation method of the double-colored spectrum column natural gas component of band pre-column blowing function of the present invention may further comprise the steps:
The first, set the separating column step, in this step, at first selected two root chromatogram columns, separating column 1 and separating column 2, and separating column 1 is set at chromatogram pre-separation post 1, separating column 2 is set at chromatogram master separating column 2; Chromatogram pre-separation post 1 carries out the pre-separation work and the blowback work of rock gas, so chromatogram pre-separation post 1 is also referred to as and cuts post in advance, and chromatogram master's separating column 2 carries out the main separating column work of rock gas;
The second, pre-separation step (see figure 1), in this step, it is that chromatogram pre-separation post 1 carries out pre-separation work that the gaseous sample of deviating from from mud that the oil exploration drilling scene is obtained is delivered to separating column 1; At this moment, the gaseous sample of so-called pre-separation comprises it being C in the rock gas
1-C
5Component, namely for methane, ethane, propane, isobutane, normal butane, isopentane, n-pentane and isopentane, n-pentane and subsequent heavy constituent, these heavy constituent are the compound that is higher than behind the rock gas n-pentane; In this step, the heavy constituent in separating column 1 gaseous sample that to be chromatogram pre-separation post 1 obtained the petroleum prospecting scene be component heavier in the gas component than n-pentane to be captured in separating column 1 be in the chromatogram pre-separation post 1, and allow C in the rock gas
1-C
5Component namely for methane, ethane, propane, isobutane, normal butane, isopentane, n-pentane are that chromatogram pre-separation post 1 arrival separating column 2 is that chromatogram master separating column 2 carries out separable programming once more by separating column 1;
The 3rd, switch separating step, (seeing Fig. 1 and Fig. 2), in this step, when separating column 1 is that (gas component that sets in the present invention is a methane for the gas component that sets in the chromatogram pre-separation post 1, ethane, propane, isobutane, normal butane and isopentane, the n-pentane component) do pre-separation after, separating column 2 is that chromatogram master separating column 2 continues to participate in mask work, simultaneously, to separating column 1 is that chromatogram pre-separation post 1 oppositely leads to into blowback air, separating column 2 is that chromatogram master separating column 2 continues to separate, reach separation fully up to the gas component that sets, and blowback air will to be trapped in separating column 1 be that heavy constituent blowback in the chromatogram pre-separation post 1 goes out outside the separating column 1, it is the components that are higher than n-pentane in the gas component that described blowback goes out separating column 1 outer heavy constituent.
Please in conjunction with Fig. 1 and Fig. 2 referring to shown in Figure 3, detachment process is separated 2 and forms with main by pre-separation 1 in the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function of the present invention, time according to different request for utilization analytical cycles has, and does not wait in 30 seconds, 60 seconds, 90 seconds, 120 seconds or 180 seconds; The time of shown in Figure 3 is analytical cycle is 30 seconds situation, at this moment, and to the methane in the rock gas, ethane, propane, isobutane, normal butane, isopentane, n-pentane (C
1-C
5Component) analytical cycle is 29 seconds, and setup time is 1 second.
In sum, the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function of the present invention, using two root chromatogram columns dexterously is separating column 1 (pre-separation post 1) and separating column 2 (main separating column 2) system, can be smoothly in 30,60 seconds, 90 seconds or 180 seconds analytical cycles effective methane, ethane, propane, isobutane, normal butane, isopentane, the n-pentane in the separating natural gas, and carry out the blowback of heavy constituent; It is simple in structure, and is easy to operate, and the reliability height, therefore very practical.
Claims (7)
1. separation method with the double-colored spectrum column natural gas component of pre-column blowing function is characterized in that may further comprise the steps:
The first, set the separating column step, at first selected separating column 1 and separating column 2 are set at chromatogram pre-separation post 1 with separating column 1, and separating column 2 is set at chromatogram master separating column 2;
The second, the pre-separation step, it is that chromatogram pre-separation post 1 carries out pre-separation work that the gaseous sample that the petroleum prospecting scene is obtained is delivered to separating column 1;
The 3rd, switch separating step, when separating column 1 is after the gas component that sets in the chromatogram pre-separation post 1 is done pre-separation, separating column 2 is that chromatogram master separating column 2 continues to participate in mask work, simultaneously, be that chromatogram pre-separation post 1 oppositely leads to into blowback air to separating column 1, separating column 2 is that chromatogram master separating column 2 continues to separate, reach fully up to the gas component that sets and to separate, and blowback air will to be trapped in separating column 1 be that heavy constituent blowback in the chromatogram pre-separation post 1 goes out outside the separating column 1.
2. the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function as claimed in claim 1 is characterized in that: in described step 1, described separating column 1 is that chromatogram pre-separation post 1 is also for cutting post in advance.
3. the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function as claimed in claim 1, it is characterized in that: in described step 2, described gaseous sample comprises methane in the rock gas, ethane, propane, isobutane, normal butane and isopentane, n-pentane and subsequent heavy constituent, and these heavy constituent are the compound that is higher than behind the rock gas n-pentane.
4. the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function as claimed in claim 1 is characterized in that: in described step 2, the heavy constituent in the gas that the petroleum prospecting scene is obtained are captured in the chromatogram pre-separation post 1.
5. the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function as claimed in claim 1, it is characterized in that: in described step 3, the gas component that separates in the described chromatogram pre-separation post 1 is methane, ethane, propane, isobutane, normal butane and isopentane, n-pentane.
6. the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function as claimed in claim 1 is characterized in that: in described step 3, it is the components that are higher than n-pentane in the gas component that described blowback goes out separating column 1 outer heavy constituent.
7. the separation method of the double-colored spectrum column natural gas component of band pre-column blowing function as claimed in claim 1 is characterized in that: be one of following to time of the analytical cycle of methane, ethane, propane, isobutane, normal butane, isopentane, n-pentane in the described separation method: 30 seconds, 60 seconds, 90 seconds, 120 seconds, 180 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112290 CN1216289C (en) | 2002-06-28 | 2002-06-28 | Double chromatographic column natural gas composition separation method with precolumn counter-blowing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112290 CN1216289C (en) | 2002-06-28 | 2002-06-28 | Double chromatographic column natural gas composition separation method with precolumn counter-blowing function |
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| CN1465974A true CN1465974A (en) | 2004-01-07 |
| CN1216289C CN1216289C (en) | 2005-08-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879491A (en) * | 2012-09-21 | 2013-01-16 | 武汉钢铁(集团)公司 | Analyzing apparatus for total carbon content in argon with high purity and analyzing method thereof |
| CN103983722A (en) * | 2014-04-28 | 2014-08-13 | 华东师范大学 | A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel |
| CN114509522A (en) * | 2021-10-11 | 2022-05-17 | 聚光科技(杭州)股份有限公司 | Gas separation device and method based on chromatographic technology |
-
2002
- 2002-06-28 CN CN 02112290 patent/CN1216289C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879491A (en) * | 2012-09-21 | 2013-01-16 | 武汉钢铁(集团)公司 | Analyzing apparatus for total carbon content in argon with high purity and analyzing method thereof |
| CN103983722A (en) * | 2014-04-28 | 2014-08-13 | 华东师范大学 | A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel |
| CN103983722B (en) * | 2014-04-28 | 2015-06-24 | 华东师范大学 | A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel |
| CN114509522A (en) * | 2021-10-11 | 2022-05-17 | 聚光科技(杭州)股份有限公司 | Gas separation device and method based on chromatographic technology |
| CN114509522B (en) * | 2021-10-11 | 2024-05-17 | 聚光科技(杭州)股份有限公司 | Gas separation device based on chromatographic technique |
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| Publication number | Publication date |
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| CN1216289C (en) | 2005-08-24 |
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