CN107290205B - Device for the analysis of hot dilute hydrocarbons - Google Patents
Device for the analysis of hot dilute hydrocarbons Download PDFInfo
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- CN107290205B CN107290205B CN201610221422.0A CN201610221422A CN107290205B CN 107290205 B CN107290205 B CN 107290205B CN 201610221422 A CN201610221422 A CN 201610221422A CN 107290205 B CN107290205 B CN 107290205B
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- 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
- G01N1/44—Sample treatment involving radiation, e.g. heat
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Abstract
The invention provides a device for analyzing hot dilute hydrocarbon. The apparatus includes a heater, a heat-releasing container disposed within the heater for placing a sample, an evacuator for evacuating the heat-releasing container, and a controller for controlling delivery into the heat-releasing container. By providing a heater, the heat release container can be heated to promote complete desorption of the hydrocarbon gas, thereby obtaining more accurate test results. Meanwhile, due to the arrangement of the controller, the test precision and efficiency can be improved.
Description
Technical Field
The invention belongs to the technical field of oil-gas exploration, and particularly relates to a device for resolving hot dilute hydrocarbon.
Background
Because of the small size and high permeability of the hydrocarbon molecules, it tends to escape to the surface through the overburden. The hydrocarbons present in the surface medium are not only wrapped in carbonate minerals (measured by acidolysis of hydrocarbons) but also adsorbed in silicate minerals such as soil.
In the prior art, a low-temperature analysis method is often adopted to analyze adsorbed hydrocarbons in a soil sample. Then, a desorbed gas sample is collected and tested by gas chromatography. Although the method can realize quantitative desorption under the low-temperature condition, the sample for realizing low-temperature desorption by the device applied to the method needs to be a fluid slurry sample, and experiments on solid soil, rocks and the like collected in the field are difficult to perform without humidifying the sample. And, if the sample is wetted into a fluid sample by adding water, the sample inevitably suffers secondary pollution and loss of the sample during the transportation process in the device, and the test structure is adversely affected. In addition, the hydrocarbon molecules in the soil are in a low-temperature desorption state, the content is low, and the desorbed hydrocarbon components are incomplete.
Disclosure of Invention
In view of some or all of the above technical problems of the prior art, the present invention provides an apparatus for the analysis of hot dilute hydrocarbons. The device can desorb hydrocarbon in a sample at high temperature, so that the analytic components are more complete and the content is better.
According to the present invention, there is provided an apparatus for resolving hot dilute hydrocarbons, comprising:
a heater for heating the liquid in the container,
a heat release container arranged in the heater for placing the sample,
an eductor for evacuating a heat release container, and
a controller for controlling delivery into the heat release container.
In one embodiment, the bottom end of the pyroelectric container is configured with a vent port, and the discharger has a closure assembly selectively sealably connectable with the vent port.
In one embodiment, the discharger further comprises a support plate for supporting the plugging assembly and a drive for actuating the support plate to move.
In one embodiment, an end of the blocking member contacting the pyroelectric container is configured with an arc portion capable of surrounding a discharge port of the pyroelectric container.
In one embodiment, the closure assembly has a receiving part with an arc-shaped top end, and a plate-shaped spring part arranged on the top end of the receiving part.
In one embodiment, the middle region of the elastic member protrudes upward.
In one embodiment, the periphery of the discharge opening of the pyroelectric container is configured with an extension part extending towards the middle, and the extension part can be matched with the blocking component.
In one embodiment, the closure assembly has a closure assembly body and a wedge projecting upwardly from the closure assembly body that is engageable with the vent.
In one embodiment, an outlet is provided at the bottom of the heater to communicate the inside and outside.
In one embodiment, a first sealing plug is arranged at the top end opening of the heat release container, a collection pipe is arranged on the first sealing plug in a sealing mode, the lower end opening of the collection pipe extends into the heat release container, a second sealing plug is arranged at the upper end opening of the collection pipe, and the second sealing plug is located above the first sealing plug.
Compared with the prior art, the invention has the advantages that the heat release container can be heated by arranging the heater so as to promote the complete desorption of the hydrocarbon gas, thereby obtaining more accurate test results. Meanwhile, due to the arrangement of the controller, the test precision and efficiency can be improved.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 shows an apparatus for the analysis of hot dilute hydrocarbons according to an embodiment of the invention;
FIG. 2 shows a cross-sectional view of a closure assembly according to another embodiment of the invention;
FIG. 3 shows a closure assembly and a pyroelectric container according to a third embodiment of the present invention;
the figures are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
FIG. 1 shows an apparatus 100 for resolving thermally released hydrocarbons in accordance with an embodiment of the invention. As shown in fig. 1, the apparatus 100 includes a heater 1, a heat release container 2, a discharger 3, and a controller 4. Wherein, the heater 1 is used for heating the heat release container 2, so that the hydrocarbon gas in the sample in the heat release container 2 is desorbed more completely. The pyroelectric container 2 is used for placing a sample, and the pyroelectric container 2 is provided in the heating container 2 to receive heat from the heating container 2. The discharger 3 is used to evacuate objects (e.g., wastewater used to clean the heat release container 2, etc.) inside the heat release container 2. The controller 4 is used to control the supply of different substances into the heat release container 2, for example, a cleaning liquid, a sodium hydroxide solution, and the like into the heat release container 2 according to the test requirements.
Thus, by providing the heater 1, the heat release container 2 can be heated to promote complete desorption of the hydrocarbon gas in the sample, thereby obtaining more accurate test results. Meanwhile, due to the arrangement of the controller 4, required substances can be input into the heat release container 2 according to actual requirements, so that the test precision and efficiency are improved.
In one embodiment, the bottom end of the pyroelectric container 2 is configured with a discharge opening 5. And the discharger 3 has a plugging assembly 6 selectively sealably connectable with the discharge port 5. When a sample needs to be added into the heat release container 2, the plugging component 6 is arranged at the discharge port 5, so that the tightness of the bottom end of the heat release container 2 is ensured. In addition, during the test, the plugging assembly 6 is hermetically arranged at the discharge port 5 to ensure that the gas does not leak outwards, so that the test accuracy is ensured. In addition, after the test is completed, for example, when the heat release container 2 needs to be cleaned, a cleaning liquid (for example, high-pressure water) may be injected into the heat release container 2, and the plugging member 6 is detached from the discharge port 5, so that the waste can flow out through the discharge port 5.
According to the invention, the discharger 3 further comprises a support plate 7 and a drive element 8. Wherein the support plate 7 is used for supporting the plugging assembly 6. And a driving member 8 is connected to the support plate 7 for urging the support plate 7 to move in a direction away from or close to the heat-releasing container 2. When the discharge port 5 needs to be blocked, the driving piece 8 is started to drive the supporting plate 7 to move towards the direction close to the heat release container 2, so that the blocking assembly 6 is driven to be matched with the discharge port 5. When it is desired to open the discharge opening 5, the drive member 8 is activated to urge the support plate 7 to move away from the pyroelectric container 2, thereby bringing the blocking member 6 out of the discharge opening 5. That is, the relative movement of the closure element 6 and the pyroelectric container 2 is achieved by the support plate 7 and the drive element 8 in order to ensure the opening or closure of the discharge opening 5.
Preferably, the driving member 8 may be a cylinder or a hydraulic cylinder, and the support plate 7 is connected to an output shaft of the driving member 8. In addition, in the case where a plurality of sets of sample tests are required to be performed simultaneously, a plurality of pyroelectric containers 2 may be provided in the heater 1. Through the driving piece and the bearing plate 7, a plurality of plugging components 6 can act simultaneously, so that the plugging of the discharge port 5 can be completed in less time, and the test efficiency is improved.
In one embodiment, the end of the blocking member 6 in contact with the pyroelectric container 2 is configured with an arc 9 capable of surrounding the discharge opening 5 of the pyroelectric container 2. Through the arrangement, the sealing fit between the plugging component 6 and the heat release container 2 can be ensured, so that the tightness of the heat release container 2 is ensured. In order to further ensure the sealing property, it is preferable that a seal (not shown in the figure) be provided between the arc 9 and the pyroelectric container 2, or that the arc 9 itself be made of an elastic material such as rubber.
In another embodiment, as shown in fig. 2, the plugging member 6 has a mounting member 10 having an arc-shaped tip end, and a plate-like elastic member 11 disposed on the tip end of the mounting member 10. With this arrangement, the elastic member 11 is compressed in the process of approaching the plugging assembly 6 to the heat release container 2, and one end of the heat release container 2 is fitted with the arc-shaped receiving member 10 via the elastic member 11, and the elastic member 11 functions as a seal and ensures the sealability of the heat release container 2. During the process of the plugging assembly 6 moving away from the heat release container 2, the elastic piece 11 returns to the plate shape under the self elasticity. This arrangement facilitates cleaning of the plugging assembly 6 and avoids residues on the plugging assembly 6. For example, the waste liquid for cleaning the heat release container 2 easily flows down from the elastic member 11, and the cleaning liquid is prevented from remaining on the plugging member 6. Preferably, the middle region of the elastic member 11 protrudes upward. That is, the middle region of the elastic member 11 is higher than the peripheral region. By this arrangement, the liquid can flow down from the elastic member 11 more easily, and the cleaning liquid can be prevented from remaining on the plugging member 6.
In order to sufficiently ensure the sealing property between the pyroelectric container 2 and the closing member 6, an extension portion 22 extending toward the middle is formed on the outer periphery of the discharge port 5 of the pyroelectric container 2. The extension 22 is configured to fit the arc shape of the occluding component 6. Through the arrangement, on one hand, the area of the discharge port 5 can be reduced, and on the other hand, the structural fit between the heat release container 2 and the blocking component 6 is ensured, so that the sealing performance between the heat release container and the blocking component is improved.
In a third embodiment, as shown in fig. 3, the plugging member 6 has a plugging member body 23 and a wedge 12 projecting upward from the plugging member body 23 and capable of engaging with the discharge opening 5. Through this kind of setting, can guarantee the structure cooperation between heat release container 2 and the shutoff subassembly 6 to leakproofness between the two has been improved. Also, in this arrangement, the structural requirement for the heat release container 2 is reduced, reducing the manufacturing cost. That is, in this arrangement, the discharge port 5 of the bottom of the heat release container 2 may be configured as a through hole of an effective diameter equal to the inner cavity of the heat release container 2 without providing the extension 22. Preferably, the wedge 12 is made of an elastic material such as rubber.
According to the present invention, the heater 1 is constructed in a box type, and an outlet 13 communicating the inside and the outside is provided at the bottom thereof to communicate the inside and the outside of the heater 1. For example, in the process of cleaning the heat release container 2, the cleaning water flows into the inner cavity of the heater 1 through the drain port 5 and is discharged out of the heater 1 through the outlet 13.
A first sealing plug 14 is provided at the top end opening of the pyroelectric container 2. And a collection tube 15 is sealingly disposed over the first sealing plug 14. The lower end opening of the collection tube 15 extends into the heat release container 2, a second sealing plug 21 is arranged at the upper end opening of the collection tube 15, and the second sealing plug 21 is positioned above the first sealing plug 14. By this arrangement, it is ensured that there is a receiving space at the top end of the heat release container 2 for collecting the desorbed hydrocarbon gas. Specifically, after the hydrocarbon gas in the sample is desorbed, the heat release container 2 may be filled with a sodium hydroxide solution to absorb carbon dioxide and drive the hydrocarbon gas to be collected in the collection tube 15. The arrangement facilitates convenient collection of desorbed gas for subsequent testing.
According to the present invention, as shown in fig. 1, the apparatus 100 further includes a cleaning liquid container 16, a high-pressure gas container 17, a sodium hydroxide container 18, a vacuum pump 19, and the like, which are selectively communicated with the heat release container 2. The cleaning liquid container 16, the high-pressure gas container 17, the sodium hydroxide container 18 and the vacuum pump 19 are communicated with or cut off from the heat release container 2 under the control of the controller 4. Through the arrangement, the experiment can be carried out with accurate amount and accurate time, the test efficiency is improved, and the test precision is increased.
Preferably, electromagnetic valves 20 may be respectively provided on respective lines connecting the cleaning liquid container 16, the high-pressure gas container 17, the sodium hydroxide container 18, and the vacuum pump 19 to the heat release container 2, for controlling the connection and disconnection of the respective lines.
Preferably, a hole 25 is provided at the top end of the heater 1 so that the bottom end of the heat release container 2 can extend through the top wall of the heater 1 into the inner cavity of the heater 1. Meanwhile, the hole 25 also functions to clamp the heat release container 2 to define the position of the heat release container 2. Meanwhile, a hole 26 is provided at the top end of the heater 1 for enabling the output shaft of the driving member 8 to drive the support plate 7. For uniform force application, a transmission element 27 is provided between the support plate 7 and the output shaft of the drive element 8 for pushing or receiving the support plate 7. Wherein the transmission element 27 passes through the hole 26 and is connected at its upper end face to the support plate 7 and at its lower end face to the output shaft of the drive element 8. The heater 1 further includes a temperature controller, a heating wire, or a fan (not shown). And these components are well known to those skilled in the art, and a detailed description thereof will be omitted.
The method for the analysis of hot dilute hydrocarbons using the apparatus is described in detail below with reference to FIGS. 1-3.
First, the heat release container 2 is cleaned and dried. The electromagnetic valve 20 is controlled by the controller 4 so that the cleaning liquid container 16 communicates with the heat release container 2. That is, a cleaning liquid (e.g., purified water) is injected into the heat release container 2. The cleaning liquid is discharged out of the heat release container 2 through the discharge port 5 and further out of the heater 1 through the outlet 13. Then, the controller 4 controls the electromagnetic valve 20 to block the communication between the cleaning liquid container 16 and the heat release container 2, and to communicate the high-pressure gas container 17 with the heat release container 2, so that high-pressure air is blown into the heat release container 2 to dry the same. Meanwhile, the heat release container 2 may also be heated (for example, to 105 ℃) by the heater 1. After the heat releasing container 2 is dried, the high-pressure gas container 17 is disconnected from the heat releasing container 2, and the heat releasing container 2 is cooled to room temperature.
Next, the discharge port 5 of the heat release container 2 is blocked by the blocking member 6. And the sample (pulverized soil and/or rock) is loaded into the heat release container 2. The heat release container 2 is evacuated by a vacuum pump 19 while ensuring the sealing (the top end opening is sealed by the first sealing plug 14, and the discharge port 5 is sealed by the plugging member 6).
Further, the heat release container 2 is heated by the heater 1, and is kept at a constant temperature for a certain time (for example, 45 minutes) after the temperature is raised to a certain temperature (for example, 200 degrees), so that the hydrocarbon gas in the sample in the heat release container 2 is better analyzed and the sample is not pyrolyzed. After that, the heater 1 is cooled to room temperature.
Finally, the electromagnetic valve 20 is controlled by the controller 4 to communicate the sodium hydroxide container 18 with the heat release container 2, and the sodium hydroxide solution is filled into the heat release container 2 to absorb the carbon dioxide and collect the desorbed gas at the collecting pipe 15.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or variations within the technical scope of the present invention disclosed, and such changes or variations should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An apparatus for resolving hot dilute hydrocarbons, comprising:
a heater for heating the liquid in the container,
a heat release container disposed within the heater for placing a sample,
an eductor for evacuating the heat release container, and
a controller for controlling delivery into the pyroelectric container;
the bottom end of the heat release container is provided with a discharge port, and the discharger is provided with a plugging component which can be selectively and hermetically connected with the discharge port, a bearing plate for supporting the plugging component and a driving piece for driving the bearing plate to move;
the plugging component is provided with a placing piece with an arc-shaped top end and a plate-shaped elastic piece arranged on the top end of the placing piece.
2. The device according to claim 1, wherein an end of the blocking member contacting the pyroelectric container is configured with an arc portion capable of surrounding the discharge port of the pyroelectric container.
3. The device of claim 1, wherein the middle region of the elastic member protrudes upward.
4. The device according to any one of claims 1 to 3, characterized in that the periphery of the discharge opening of the pyroelectric container is configured with an extension extending medially, which can cooperate with the blocking assembly.
5. The device of claim 2, wherein the occluding assembly has an occluding assembly body and a wedge projecting upwardly from the occluding assembly body that is engageable with the discharge orifice.
6. The apparatus of claim 2, wherein an outlet is provided at the bottom of the heater to communicate the inside and the outside.
7. The device of claim 1, wherein a first sealing plug is disposed at the top end opening of the pyroelectric container, and a collection tube is sealingly disposed on the first sealing plug, a lower end opening of the collection tube extends into the pyroelectric container, a second sealing plug is disposed at the upper end opening of the collection tube, and the second sealing plug is located above the first sealing plug.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610221422.0A CN107290205B (en) | 2016-04-11 | 2016-04-11 | Device for the analysis of hot dilute hydrocarbons |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610221422.0A CN107290205B (en) | 2016-04-11 | 2016-04-11 | Device for the analysis of hot dilute hydrocarbons |
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| CN107290205A CN107290205A (en) | 2017-10-24 |
| CN107290205B true CN107290205B (en) | 2020-05-15 |
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| CN110501209A (en) * | 2018-05-16 | 2019-11-26 | 中国石油化工股份有限公司 | A kind of heat for soil adsorbed hydrocarbon to be desorbed releases pipe and gas preparation method |
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