CN115219639A - System for enriching hydrocarbon gas in slurry gas and using method thereof - Google Patents
System for enriching hydrocarbon gas in slurry gas and using method thereof Download PDFInfo
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- CN115219639A CN115219639A CN202110404096.8A CN202110404096A CN115219639A CN 115219639 A CN115219639 A CN 115219639A CN 202110404096 A CN202110404096 A CN 202110404096A CN 115219639 A CN115219639 A CN 115219639A
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- 239000002002 slurry Substances 0.000 title claims abstract description 71
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 69
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 69
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 237
- 238000005070 sampling Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/08—Preparation using an enricher
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- General Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides an enrichment system of hydrocarbon gas in slurry gas and a using method thereof, belonging to the technical field of petroleum geology and petroleum drilling engineering logging equipment, and the enrichment system of hydrocarbon gas in slurry gas comprises: the chromatographic column is used for separating hydrocarbon gas in the slurry gas, and a heating device is arranged outside the chromatographic column; the gas collection box is hollow and forms a gas collection chamber for collecting the hydrocarbon gas separated from the chromatographic column, and the gas collection box is communicated with the chromatographic column through a first pipeline; the vacuum pump is communicated with the gas collection box through a second pipeline and is used for vacuumizing the gas collection box; the first pipeline is provided with a first control valve, and the second pipeline is provided with a second control valve. The system for enriching the hydrocarbon gas in the slurry gas and the use method thereof can carry out secondary treatment on the slurry gas, obviously improve the concentration of effective components in the slurry gas and facilitate the subsequent analysis and detection of the gas.
Description
Technical Field
The invention relates to the technical field of petroleum geology and petroleum drilling engineering logging equipment, in particular to an enrichment system of hydrocarbon gas in slurry gas and a using method thereof.
Background
The logging technology plays an important role in oil and gas exploration as an important component in the petroleum and natural gas exploration technology, and the underground condition is monitored by recording and analyzing characteristic parameters of stratum gas carried in collected drilling engineering and circulating mud, so that an oil-gas layer and various abnormal conditions are found and evaluated in time, and the comprehensive exploration benefit is improved.
The carbon isotope test of the mud gas content and each alkane gas component thereof is an important index for evaluating the development potential of the shale gas, but the detection is limited for a long time by the influence of the acquired mud gas content. The traditional mud gas collection device is used for obtaining mud gas, air can be introduced into a gas collection process for avoiding mud entering a pipeline, so that the concentration of effective components such as collected gas methane is reduced, adverse effects are caused on subsequent mud gas detection, the measurement precision is low, and even data are difficult to measure.
In view of the above, the present inventors have designed an enrichment system for hydrocarbon gas in slurry gas and a method for using the same through repeated experiments according to production design experiences in the field and related fields for many years, so as to solve the problems in the prior art.
Disclosure of Invention
The invention provides an enrichment system of hydrocarbon gas in slurry gas and a using method thereof, which can carry out secondary treatment on the slurry gas, obviously improve the concentration of effective components in the slurry gas and facilitate the subsequent analysis and detection of the gas.
In order to achieve the above object, the present invention provides a system for enriching hydrocarbon gas in a slurry gas, wherein the system for enriching hydrocarbon gas in a slurry gas comprises:
the chromatographic column is used for separating hydrocarbon gas in the slurry gas, and a heating device is arranged outside the chromatographic column;
the gas collection box is hollow and forms a gas collection chamber and is used for collecting the hydrocarbon gas separated from the chromatographic column, and the gas collection box is communicated with the chromatographic column through a first pipeline;
the vacuum pump is communicated with the gas collecting box through a second pipeline and is used for vacuumizing the gas collecting box;
and a first control valve is arranged on the first pipeline, and a second control valve is arranged on the second pipeline.
The system for enriching hydrocarbon gases in slurry gas comprises a first control valve, a first pipeline, a second control valve, a chromatographic column, a first pipeline, a second pipeline and a gas-liquid separator.
The system for enriching hydrocarbon gas in mud gas as described above, wherein the system for enriching hydrocarbon gas in mud gas further comprises a chromatographic column box, and the chromatographic column and the heating device are both arranged in the chromatographic column box.
The system for enriching hydrocarbon gases in the slurry gas comprises a chromatographic column, wherein one end of the chromatographic column is a gas inlet, the other end of the chromatographic column is a gas outlet, the gas inlet can be communicated with a slurry gas pipeline, and the gas outlet is communicated with the first pipeline.
The system for enriching hydrocarbon gas in mud gas comprises a gas collection box, a sampling needle, a sealing plug and a gas collection box.
The system for enriching hydrocarbon gas in mud gas as described above, wherein the sealing plug is a rubber sealing plug.
In order to achieve the above object, the present invention further provides a method for using a system for enriching hydrocarbon gas in a slurry gas, wherein the system for enriching hydrocarbon gas in a slurry gas is the system for enriching hydrocarbon gas in a slurry gas as described above, the method comprising:
step A, connecting the chromatographic column with a slurry gas pipeline;
b, enabling the slurry gas in the slurry gas pipeline to enter the chromatographic column, and separating hydrocarbon gas in the slurry gas by the chromatographic column;
step C, vacuumizing the gas collection chamber through the vacuum pump so as to enable the gas collection chamber to be in a vacuum state, and closing the gas collection chamber after the gas collection chamber is in the vacuum state;
d, communicating the chromatographic column with the gas collection chamber, and heating the chromatographic column through the heating device to enable the hydrocarbon gas in the chromatographic column to enter the gas collection chamber;
and E, extracting the sample gas in the gas collecting chamber.
The method for using the system for enriching hydrocarbon gas in slurry gas, wherein an exhaust pipeline is further connected to the first pipeline, the exhaust pipeline is connected between the first control valve and the chromatographic column, an exhaust valve is arranged on the exhaust pipeline, in the step B, the first control valve is in a closed state, the exhaust valve is in an open state, and in the step D, the first control valve is in an open state, and the second control valve and the exhaust valve are in a closed state.
The use method of the system for enriching hydrocarbon gas in slurry gas, wherein the use method further comprises the step F, and the steps B to E are repeated to realize continuous sampling.
The method for using the system for enriching hydrocarbon gas in slurry gas as described above, wherein in step D, the temperature of the chromatographic column is increased from 50 ℃, to 120 ℃ at a rate of 60 ℃/min and is maintained for 1min.
Compared with the prior art, the invention has the following characteristics and advantages:
according to the system for enriching the hydrocarbon gas in the slurry gas and the using method thereof, provided by the invention, the slurry gas is subjected to secondary treatment by using the chromatographic column, so that the concentration of the hydrocarbon gas in the gas collection chamber is obviously improved, and the subsequent analysis and detection are facilitated.
The enrichment system of hydrocarbon gas in the slurry gas is easy to install, the using method is simple and convenient to operate, the enrichment system is convenient to match with subsequent matched equipment, and the working efficiency can be obviously improved.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
FIG. 1 is a schematic diagram showing the structure of a system for enriching hydrocarbon gas in a slurry gas according to the present invention.
Description of reference numerals:
100. a hydrocarbon gas enrichment system in the slurry gas; 10. A chromatographic column;
11. an air inlet; 12. An air outlet;
20. a gas collection tank; 21. A gas collection chamber;
22. a sampling port; 30. A vacuum pump;
40. a first pipeline; 41. A first control valve;
50. a second pipeline; 51. A second control valve;
60. an exhaust line; 61. An exhaust valve;
70. chromatographic column box.
Detailed Description
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and should not be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may be present.
Referring to fig. 1, the present invention provides an enrichment system 100 for hydrocarbon gas in a slurry gas, the enrichment system 100 for hydrocarbon gas in a slurry gas includes a chromatographic column 10, a gas collection tank 20 and a vacuum pump 30, the chromatographic column 10 is used for separating hydrocarbon gas in a slurry gas, a heating device (not shown in the figure) is disposed outside the chromatographic column 10, the gas collection tank 20 is hollow and forms a gas collection chamber 21, the gas collection chamber 21 is used for collecting hydrocarbon gas separated from the chromatographic column 10, and the gas collection tank 20 is communicated with the chromatographic column 10 through a first pipeline 40; the vacuum pump 30 is communicated with the gas collection box 20 through a second pipeline 50, and the vacuum pump 30 is used for vacuumizing the gas collection chamber 21; the first pipeline 40 is provided with a first control valve 41, and the second pipeline 50 is provided with a second control valve 51.
The invention also provides a use method of the system for enriching the hydrocarbon gas in the slurry gas, which comprises the following steps:
step A, connecting a chromatographic column 10 with a mud gas pipeline;
step B, enabling the slurry gas in the slurry gas pipeline to enter a chromatographic column 10, and separating hydrocarbon gas in the slurry gas by the chromatographic column 10;
step C, communicating the vacuum pump 30 and the gas collection chamber 21, vacuumizing the gas collection chamber 21 through the vacuum pump 30 to enable the gas collection chamber 21 to be in a vacuum state, and sealing the gas collection chamber 21 after the gas collection chamber 21 is in the vacuum state;
d, communicating the chromatographic column 10 with the gas collection chamber 21, and heating the chromatographic column 10 through a heating device to enable hydrocarbon gas in the chromatographic column 10 to enter the gas collection chamber 21;
and E, extracting the sample gas in the sample gas collection chamber 21.
The invention provides an enrichment system of hydrocarbon gas in slurry gas and a using method thereof, which utilize a chromatographic column 10 to carry out secondary treatment on the slurry gas, in particular, when the slurry gas passes through the chromatographic column, the hydrocarbon gas in the slurry gas is separated and enriched in the chromatographic column, and then the separated hydrocarbon gas enters a gas collection chamber, so that the concentration of the hydrocarbon gas in the gas collection chamber is obviously improved, and the subsequent analysis and detection are convenient.
The enrichment system for hydrocarbon gas in the slurry gas is easy to install, simple and convenient to operate, convenient to match with subsequent matched equipment and capable of remarkably improving the working efficiency.
In an alternative embodiment of the present invention, the first pipe 40 is further connected to an exhaust pipe 60, the exhaust pipe 60 is connected between the first control valve 41 and the chromatographic column 10, and the exhaust pipe 60 is provided with an exhaust valve 61. With the above structure, in step B, the slurry gas in the slurry gas pipeline passes through the chromatographic column 10 and is then exhausted through the exhaust pipe 60, in the above process, the hydrocarbon gas in the slurry gas is adsorbed in the chromatographic column, and other components in the slurry gas are exhausted through the exhaust pipe 60, thereby realizing the separation of the hydrocarbon gas.
Further, the communication and the isolation of the chromatographic column 10, the gas collection chamber 21 and the vacuum pump 30 are controlled by the first control valve 41, the second control valve 51 and the exhaust valve 61 respectively. In step B, the exhaust valve 61 is in an open state, and the first control valve 41 is in a closed state; in step C, the first control valve 41 is in a closed state, and the second control valve 51 is in an open state; in step D, the first control valve 41 is in the open state, the exhaust valve 61 is in the closed state, and the second control valve 51 is in the closed state.
In an alternative embodiment of the present invention, in step D, the temperature of the column 10 is increased from 50 deg.C to 120 deg.C at a rate of 60 deg.C/min and maintained for 1min.
In an optional example of the invention, the use method further comprises the step F, and the steps B to E are repeated, so that the mud gas can be continuously sampled, and the sampling efficiency is greatly improved.
The chromatographic column 10 in the enrichment system of hydrocarbon gas in the slurry gas provided by the invention can adopt the prior art and can separate the hydrocarbon gas. The column 10 may be a packed column, a standard polysiloxane gas chromatography column, or the like. For example, the column 10 may be a carbpack b column, using a packing of graphitized carbon black; or, the chromatographic column 10 is an HQ chromatographic column and adopts silica gel packing; alternatively, the column 10 may be a PSA column or the like. The chromatographic column 10 can be a capillary column with an inner diameter of 2mm, 3.175mm, etc. and a length of 0.5-2 m. The chromatographic columns are commercially available and can be purchased according to the specific type of the slurry gas. In an alternative embodiment of the present invention, the system 100 for enriching hydrocarbon gas in slurry gas further comprises a column box 70, and the column 10 and the heating device are disposed in the column box 70. The column box 70 provides support and protection for the column 10 and the heating means to prevent damage to the column and the heating means. The column 10 is removably mounted in the column box 70 for replacement; meanwhile, the column 10 and the column box 70 perform a separation operation together. In an alternative example, the column 10 is mounted within the column box 70 by a hanging or snap-fit arrangement.
In an alternative example of the present invention, one end of the chromatographic column 10 is a gas inlet 11, the other end of the chromatographic column 10 is a gas outlet 12, the gas inlet 11 can be communicated with a slurry gas pipeline, and the gas outlet 12 is communicated with the first pipeline 40.
Further, the two ends of the chromatographic column box 70 are respectively provided with a sample inlet and a sample outlet, in an optional example, the two ends of the chromatographic column 10 respectively penetrate through the sample inlet and the sample outlet, and the outer wall of the chromatographic column 10 is connected with the chromatographic column box by a gasket and a nut.
In an alternative example of the present invention, the gas collecting box 20 is further provided with a sampling port 22, a sealing plug is disposed at the sampling port 22, the sealing plug can seal the sampling port 22, and the sealing plug can still seal the sampling port 22 after the sampling needle penetrates through the sampling needle to perform sampling without leakage.
In the present invention, the external structure of the gas collecting box 20 is not limited, and the material may be stainless steel or aluminum alloy.
In an alternative embodiment of the invention, the sealing plug is a rubber sealing plug. The material of the rubber sealing plug can be silicon rubber, butyl rubber and the like.
In an alternative example, the gas collection chamber 21 has a function of collecting effective component gas (hydrocarbon gas) with a volume of 2 to 10 ml, preferably 5 ml.
In an alternative embodiment of the invention, the slurry gas line is a single pass slurry gas line.
Referring to fig. 1, the present invention will be described in detail with reference to an embodiment.
Step A, connecting a gas inlet 11 of a chromatographic column of the hydrocarbon gas enrichment system 100 in the slurry gas with a slurry gas pipeline;
step B, connecting an exhaust pipeline 60, opening an exhaust valve 61, closing a first control valve 41, enabling the mud gas in the mud gas pipeline to enter a chromatographic column 10 through a gas inlet 11, separating effective component gas (hydrocarbon gas) in the mud gas by the chromatographic column 10, and enabling the gas to pass through the chromatographic column 10 for 0.5-2 min according to the concentration of the sample gas;
step C, in the separation process of the chromatographic column 10, opening a second control valve 51, and vacuumizing the gas collecting chamber 21 by using a vacuum pump 30;
step D, closing the second control valve 51 and the exhaust valve 61, opening the first control valve 41, heating the heating device in the chromatographic column box 70 to 120 ℃ (centigrade) at the speed of 60 ℃/min from 50 ℃, and keeping for 1min to enable the gas in the chromatographic column 10 to enter the gas collection chamber 21;
step E, after the gas collection chamber 21 is filled with gas, closing the first control valve 41, opening the second control valve 51, and simultaneously cooling the chromatographic column box 70 to 50 ℃; and sample gas is drawn from the sampling port 22 of the gas collection box 20;
and F, repeating the operations from the step B to the step E, and continuously sampling.
The present invention is not limited to the above embodiments, and in particular, various features described in different embodiments can be arbitrarily combined with each other to form other embodiments, and the features are understood to be applicable to any embodiment except the explicitly opposite descriptions, and are not limited to the described embodiments.
Claims (10)
1. A system for enriching hydrocarbon gas in a slurry gas, the system comprising:
the chromatographic column is used for separating hydrocarbon gas in the slurry gas, and a heating device is arranged outside the chromatographic column;
the gas collection box is hollow and forms a gas collection chamber and is used for collecting the hydrocarbon gas separated from the chromatographic column, and the gas collection box is communicated with the chromatographic column through a first pipeline;
the vacuum pump is communicated with the gas collecting box through a second pipeline and is used for vacuumizing the gas collecting chamber;
and a first control valve is arranged on the first pipeline, and a second control valve is arranged on the second pipeline.
2. The system for enriching a hydrocarbon gas in a slurry gas according to claim 1, wherein a gas exhaust line is further connected to the first line, the gas exhaust line being connected between the first control valve and the chromatographic column, the gas exhaust line being provided with a gas exhaust valve.
3. The system for enriching a hydrocarbon gas in a slurry gas according to claim 1, wherein said system for enriching a hydrocarbon gas in a slurry gas further comprises a column casing, said column and said heating means being disposed within said column casing.
4. The system for the enrichment of hydrocarbon gases in mud gas as claimed in claim 1, wherein the gas inlet is at one end of the chromatographic column and the gas outlet is at the other end of the chromatographic column, the gas inlet being capable of communicating with a mud gas line and the gas outlet being in communication with the first conduit.
5. The system for enriching hydrocarbon gases in mud gas as claimed in claim 1, wherein said gas collection box further comprises a sampling port, said sampling port is provided with a sealing plug, and said sealing plug can still seal said sampling port after the sampling needle penetrates through the sampling port.
6. The system for enriching a hydrocarbon gas in a slurry gas of claim 5, wherein said sealing plug is a rubber sealing plug.
7. A method for using the system for enriching hydrocarbon gas in slurry gas, which is characterized in that the system for enriching hydrocarbon gas in slurry gas is the system for enriching hydrocarbon gas in slurry gas as claimed in any one of claims 1 to 6, and the method comprises the following steps:
step A, connecting the chromatographic column with a slurry gas pipeline;
b, enabling the slurry gas in the slurry gas pipeline to enter the chromatographic column, and separating hydrocarbon gas in the slurry gas by the chromatographic column;
step C, vacuumizing the gas collection chamber through the vacuum pump so as to enable the gas collection chamber to be in a vacuum state, and closing the gas collection chamber after the gas collection chamber is in the vacuum state;
d, communicating the chromatographic column with the gas collection chamber, and heating the chromatographic column through the heating device to enable the hydrocarbon gas in the chromatographic column to enter the gas collection chamber;
and E, extracting the sample gas in the gas collection chamber.
8. The method of claim 7, wherein a vent line is connected to the first conduit and connected between the first control valve and the chromatographic column, wherein an exhaust valve is disposed in the vent line, wherein in step B, the first control valve is closed and the exhaust valve is open, and in step D, the first control valve is open and the second control valve and the exhaust valve are closed.
9. The method of using the system for hydrocarbon gas enrichment in mud gas of claim 8, further comprising step F, repeating steps B through E, and achieving continuous sampling.
10. The method of using the system for hydrocarbon gas enrichment in mud gas of claim 8, wherein in step D, the temperature of the chromatographic column is raised from 50 ℃ to 120 ℃ at a rate of 60 ℃/min and held for 1min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110404096.8A CN115219639A (en) | 2021-04-15 | 2021-04-15 | System for enriching hydrocarbon gas in slurry gas and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110404096.8A CN115219639A (en) | 2021-04-15 | 2021-04-15 | System for enriching hydrocarbon gas in slurry gas and using method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006315A (en) * | 1988-02-25 | 1991-04-09 | Air Products And Chemicals, Inc. | Automated preparative gas chromatograph |
| CN201993263U (en) * | 2011-03-15 | 2011-09-28 | 重庆大学 | Preparative gas chromatography device for preparing volatile monomer component |
| US20110283771A1 (en) * | 2009-02-04 | 2011-11-24 | Joint Analytical Systems Gmbh | Device and Method for Preparing Samples for Gas Chromatography |
| CN102323359A (en) * | 2011-08-15 | 2012-01-18 | 西北核技术研究所 | Preparative gas chromatography system and method for separating inert gas sample thereof |
| CN103344735A (en) * | 2013-07-11 | 2013-10-09 | 国家电网公司 | Method for positioning discharging fault in gas insulated switchgear (GIS) |
-
2021
- 2021-04-15 CN CN202110404096.8A patent/CN115219639A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006315A (en) * | 1988-02-25 | 1991-04-09 | Air Products And Chemicals, Inc. | Automated preparative gas chromatograph |
| US20110283771A1 (en) * | 2009-02-04 | 2011-11-24 | Joint Analytical Systems Gmbh | Device and Method for Preparing Samples for Gas Chromatography |
| CN201993263U (en) * | 2011-03-15 | 2011-09-28 | 重庆大学 | Preparative gas chromatography device for preparing volatile monomer component |
| CN102323359A (en) * | 2011-08-15 | 2012-01-18 | 西北核技术研究所 | Preparative gas chromatography system and method for separating inert gas sample thereof |
| CN103344735A (en) * | 2013-07-11 | 2013-10-09 | 国家电网公司 | Method for positioning discharging fault in gas insulated switchgear (GIS) |
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