CN210716939U - Supercritical carbon dioxide preparing equipment - Google Patents
Supercritical carbon dioxide preparing equipment Download PDFInfo
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- CN210716939U CN210716939U CN201921234143.3U CN201921234143U CN210716939U CN 210716939 U CN210716939 U CN 210716939U CN 201921234143 U CN201921234143 U CN 201921234143U CN 210716939 U CN210716939 U CN 210716939U
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Abstract
The utility model provides an equipment is prepared to supercritical carbon dioxide relates to supercritical carbon dioxide and prepares technical field, the utility model provides an equipment is prepared to supercritical carbon dioxide, include: a storage tank for storing carbon dioxide in a fluid state; a pressure pump for compressing carbon dioxide to 85MPa to 105 MPa; the first pipeline is used for communicating the outlet of the storage tank with the inlet of the pressurizing pump; the export and the second tube coupling of booster pump, second pipeline are equipped with the heater that is used for heating carbon dioxide, the utility model provides a supercritical carbon dioxide prepares equipment has alleviated prior art and has failed to prepare the technical problem who has higher pressure supercritical carbon dioxide.
Description
Technical Field
The utility model relates to a technical field is prepared to supercritical carbon dioxide, especially relates to an equipment is prepared to supercritical carbon dioxide.
Background
In the process of preparing the supercritical carbon dioxide, the carbon dioxide with the pressure value of 0MPa to 50MPa is injected underground by a plunger pump, and the carbon dioxide is naturally gasified by the formation heat, so that the supercritical carbon dioxide is generated in the process. However, during the exploitation of shale gas and oil wells, the pressure of the required supercritical carbon dioxide increases with the increase of the well depth, thereby causing the difficulty of injecting the carbon dioxide into the underground and forming the supercritical carbon dioxide, and the uncertainty of the formation temperature causes the uncontrollable factor of the preparation of the supercritical carbon dioxide.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment is prepared to supercritical carbon dioxide to alleviate prior art and can't prepare the technical problem who has higher pressure supercritical carbon dioxide.
In a first aspect, the utility model provides an equipment is prepared to supercritical carbon dioxide, include: a storage tank for storing carbon dioxide in a fluid state; a pressure pump for compressing the carbon dioxide to 85MPa to 105 MPa; a first pipeline for communicating the storage tank outlet with the booster pump inlet; the outlet of the booster pump is connected with a second pipeline, and the second pipeline is provided with a heater for heating the carbon dioxide.
In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the first pipeline is provided with a first temperature sensor and a temperature control valve, and the first temperature sensor and the temperature control valve are respectively connected with the controller.
With reference to the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the first pipeline is further provided with a first pressure sensor and a pressure control valve, and the first pressure sensor and the pressure control valve are respectively connected to the controller.
In combination with the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the first pipeline is provided with a heat preservation device.
In combination with the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the heater includes an oil heating furnace, and the oil heating furnace is connected to the controller.
In combination with the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein a first check valve is disposed between the storage tank outlet and the pressurizing pump inlet, and the first check valve is used for blocking fluid from flowing into the storage tank from the pressurizing pump along the first pipeline.
With reference to the first aspect, the present disclosure provides a sixth possible implementation manner of the first aspect, wherein the first pipeline is provided with a first filter, and the first filter is located between the storage tank outlet and the pressurizing pump inlet.
In combination with the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein an air release valve is arranged between the outlet of the pressure pump and the second pipeline.
In combination with the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the pressure pump has an overflow hole, and the overflow hole is in fluid communication with the storage tank through a third pipeline.
In combination with the eighth possible implementation manner of the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein the third pipeline is provided with a third check valve, and the third check valve is used for blocking fluid from flowing into the overflow hole from the storage tank along the third pipeline.
The embodiment of the utility model provides a following beneficial effect has been brought: the method comprises the steps of adopting a storage tank for storing carbon dioxide in a fluid state, a pressure pump for compressing the carbon dioxide to 85-105 MPa, and a first pipeline for communicating an outlet of the storage tank with an inlet of the pressure pump, wherein the outlet of the pressure pump is connected with a second pipeline, the second pipeline is provided with a heater for heating the carbon dioxide, the carbon dioxide is pressurized to 85-105 MPa through the pressure pump, and then the carbon dioxide is heated by the heater to form the supercritical carbon dioxide, so that the supercritical carbon dioxide with higher pressure can be prepared without utilizing formation heat.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a supercritical carbon dioxide producing apparatus provided in an embodiment of the present invention;
fig. 2 is a schematic view of a temperature and pressure control assembly of a supercritical carbon dioxide production facility according to an embodiment of the present invention;
fig. 3 is a flow chart of a method for preparing supercritical carbon dioxide according to an embodiment of the present invention.
Icon: 001-storage tank; 002-pressure pump; 003-a first temperature sensor; 004-a thermo valve; 005-first pressure sensor; 006-pressure control valve; 007-controller; 008-a first one-way valve; 009-a first filter; 010-a heater; 011-a second temperature sensor; 012-a second pressure sensor; 013 — a second safety valve; 014-outlet line; 015-a second one-way valve; 016-plug valve; 017-collecting pipes; 018-an emptying valve; 019-third check valve; 020-first safety valve; 101-a first conduit; 102-a second conduit; 103-third line.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, the embodiment of the present invention provides a supercritical carbon dioxide producing apparatus, including: a storage tank 001 for storing carbon dioxide in a fluid state; a pressurizing pump 002 for compressing carbon dioxide to 85 MPa-105 MPa; a first pipeline 101 for communicating the outlet of the storage tank 001 with the inlet of the pressurizing pump 002; the outlet of the pressurizing pump 002 is connected to a second pipe 102, and the second pipe 102 is provided with a heater 010 for heating carbon dioxide.
Specifically, the storage tank 001 is used for storing liquid carbon dioxide with a pressure value of 1.0MPa to 1.6MPa, the liquid carbon dioxide flows to an inlet of the pressure pump 002 through the first pipeline 101, the pressure pump 002 pressurizes the carbon dioxide to 85MPa to 105MPa, the pressurized carbon dioxide is discharged through the second pipeline 102, and the heater 010 heats the carbon dioxide in the second pipeline 102, so that the carbon dioxide forms supercritical carbon dioxide under the pressure condition of 85MPa to 105 MPa. The supercritical carbon dioxide prepared by the method has the pressure of 85 MPa-105 MPa, and can be introduced into a deep well or used for other functions. The pressurized carbon dioxide is heated by the heater 010, so that formation heat is not needed to heat the carbon dioxide to produce the supercritical carbon dioxide, and the preparation of the supercritical carbon dioxide is not influenced by the formation temperature.
In some embodiments, the pressurizing pump 002 uses a plunger pump, and the pressure of the plunger pump is only in the range of 0MPa to 50MPa, so that supercritical carbon dioxide having a relatively high pressure cannot be obtained.
In this embodiment, the pressure pump 002 is a multi-cylinder pump, the maximum pressure of which can reach 105MPa, the carbon dioxide discharged from the storage tank 001 is in a liquid state or a gas-liquid mixed state, the multi-cylinder pump pressurizes the carbon dioxide to a pressure value of 90MPa, 95MPa or 100MPa, and the heater 010 heats the pressurized carbon dioxide to make the carbon dioxide reach a supercritical state. Therefore, the supercritical carbon dioxide with larger pressure can be prepared, and compared with the method of pressurizing after the supercritical carbon dioxide is obtained by extraction, the supercritical carbon dioxide preparation equipment provided by the embodiment does not need to be repeatedly separated and extracted, so that the preparation is more convenient.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the first pipeline 101 is provided with a first temperature sensor 003 and a temperature control valve 004, and the first temperature sensor 003 and the temperature control valve 004 are respectively connected with the controller 007. Wherein, first temperature sensor 003 is used for detecting the temperature of the interior carbon dioxide of first pipeline 101, and when the temperature of the interior carbon dioxide of first pipeline 101 was less than preset temperature, controller 007 heightened the setting value of temperature-sensing valve 004 to avoid the carbon dioxide of lower temperature to flow into booster pump 002 through temperature-sensing valve 004, and then avoid solid-state carbon dioxide to block up first pipeline 101 and booster pump 002.
Further, the first pipeline 101 is further provided with a first pressure sensor 005 and a pressure control valve 006, and the first pressure sensor 005 and the pressure control valve 006 are respectively connected to the controller 007. Wherein, the pressure control valve 006 can adopt the overflow valve, and first pressure sensor 005 is arranged in detecting the pressure of carbon dioxide in the first pipeline 101, and controller 007 control pressure control valve 006 adjusts the set pressure value to adjust the carbon dioxide pressure of the import department of booster pump 002. The controller 007 adjusts the set pressure value of the pressure control valve 006 and the set value of the thermo-valve 004 according to the temperature and pressure of the carbon dioxide in the first pipeline 101, respectively, to thereby ensure that the carbon dioxide at the inlet of the pressurizing pump 002 is in a liquid state or a gaseous state. Preferably, the carbon dioxide in the first pipeline 101 is always in a liquid state, so that the carbon dioxide in the first pipeline 101 has a larger density, thereby increasing the preparation rate of the supercritical carbon dioxide under a certain flow rate condition.
Further, the first pipeline 101 is provided with a heat preservation device. Wherein, first pipeline 101 is wrapped up by the insulating layer, perhaps, first pipeline 101 cover is equipped with the heat preservation sheath. The heat insulation layer and the heat insulation sheath are made of polyurethane foam, aerogel felt or glass wool, the first pipeline 101 is insulated through a heat insulation device, heat dissipation and condensation of carbon dioxide in the first pipeline 101 are avoided, and heat absorption and vaporization of liquid carbon dioxide can be avoided.
Further, the heater 010 includes a fuel heating furnace, and the fuel heating furnace is connected to the controller 007. Wherein, the fuel oil heating furnace adopts the diesel oil burning heating furnace, and controller 007 controls the fuel feeding volume of fuel oil heating furnace, and then control the temperature of heater 010. For example: the fuel oil heating furnace is supplied with fuel by a fuel injector, and the controller 007 is connected with the fuel injector to control the fuel injection quantity of the fuel injector, so that the fuel quantity in the fuel oil heating furnace is controlled, and the heat of the heater 010 is adjusted. The controller 007 controls the oil supply amount of the fuel oil heating furnace within a preset oil amount range, so that the temperature of the heater 010 is ensured within a preset temperature range, and the pressurized carbon dioxide is prepared into the supercritical carbon dioxide.
Further, heat generated by the oil-fired heating furnace is transferred to the second pipeline 102 through the fan-driven airflow, so that carbon dioxide in the second pipeline 102 is heated to form supercritical carbon dioxide. The heater 010 heats the carbon dioxide in the second pipeline 102 to a temperature of 32 ℃ or higher, so that supercritical carbon dioxide with a temperature of 32 ℃ or higher is formed. The heated supercritical carbon dioxide is in fluid communication with an outlet pipeline 014 through a second pipeline 102, the outlet pipeline 014 is provided with a second temperature sensor 011 for detecting the temperature of the supercritical carbon dioxide, and when the temperature of the supercritical carbon dioxide is less than 32 ℃, the controller 007 controls the heater 010 to raise the heating temperature.
Further, a second relief valve 013 is provided between the second line 102 and the outlet line 014, and when the pressure of the supercritical carbon dioxide is higher than the relief pressure of the outlet line 014, part of the supercritical carbon dioxide is discharged to the outside of the second line 102 through the second relief valve 013, and the other part of the supercritical carbon dioxide having a pressure value equal to or lower than the relief pressure of the outlet line 014 enters the outlet line 014. The outlet pipe 014 is further provided with a second pressure sensor 012, the second pressure sensor 012 can be a pressure gauge, and the second pressure sensor 012 can be used for detecting the pressure of the supercritical carbon dioxide in the outlet pipe 014.
Further, the outlet pipe 014 is in fluid communication with the external device, so as to convey the supercritical carbon dioxide to the external device, a second one-way valve 015 is arranged between the outlet pipe 014 and the external device, and the second one-way valve 015 is used for blocking the fluid from flowing into the outlet pipe 014 from the external device. A plug valve 016 is further arranged between the outlet pipeline 014 and the external equipment, the plug valve 016 can be driven and controlled by hydraulic power, and the supercritical carbon dioxide can be prevented from flowing into the external equipment from the outlet pipeline 014 by closing the plug valve 016.
Further, be equipped with first check valve 008 between storage tank 001 export and the booster pump 002 import, first check valve 008 is used for the separation fluid to flow into storage tank 001 from booster pump 002 along first pipeline 101. The first one-way valve 008 prevents carbon dioxide from flowing into the storage tank 001 from the pressure pump 002 along the first pipeline 101, the storage tank 001 discharges 1.0-1.6 MPa of liquid carbon dioxide, the liquid carbon dioxide is pressurized to 85-105 MPa through the pressure pump 002, and then the liquid carbon dioxide is discharged into the second pipeline 102.
Further, the first pipe 101 is provided with a first filter 009, and the first filter 009 is located between the outlet of the storage tank 001 and the inlet of the booster pump 002. Wherein, be equipped with the filter core in first filter 009, first filter 009 can filter the carbon dioxide that flows through first pipeline 101, and then avoids mixing granule impurity in the carbon dioxide that enters into force (forcing) pump 002.
Further, an air release valve 018 is disposed between the outlet of the pressure pump 002 and the second pipe 102. Wherein the outlet of the booster pump 002 is in fluid communication with a header 017, one end of the header 017 being in fluid communication with the second conduit 102, the other end of the header 017 being in fluid communication with a blow-down valve 018. The vent valve 018 is opened, and the fluid pressurized by the pressurizing pump 002 can be discharged through the vent valve 018. At the initial stage of starting the pressure pump 002, if impurity gases are doped in the collecting pipe 017, the gases can be discharged by opening the emptying valve 018; when supercritical carbon dioxide is prepared, the emptying valve 018 is closed, and the pressurized carbon dioxide flows into the second pipeline 102 through the collecting pipe 017 and is heated by the heater 010 to reach a supercritical state.
Further, the pressurizing pump 002 has an overflow hole, which is in fluid communication with the storage tank 001 via a third pipe 103. When the pressure pump 002 is operated, part of the carbon dioxide permeates between the piston and the cylinder of the pressure pump 002, so that the frictional resistance between the piston and the cylinder is reduced by carbon dioxide lubrication. The carbon dioxide, which has a lubricating effect, vaporizes and flows through the overflow opening into the third line 103. The vaporized carbon dioxide is sent to the storage tank 001 through the third line 103, and the carbon dioxide is recovered and used. The third pipeline 103 is provided with a third one-way valve 019, and the third one-way valve 019 is used for blocking the fluid from flowing into the overflow hole from the storage tank 001 along the third pipeline 103. The third pipeline 103 is further provided with a first safety valve 020, if the pressure of the carbon dioxide at the overflow hole is greater than the set value of the first safety valve 020, the first safety valve 020 is opened, so that the carbon dioxide is discharged to the outside of the third pipeline 103, and the storage tank 001 is prevented from being damaged due to the fact that the high-pressure gas is filled into the storage tank 001.
As shown in fig. 1 and 3, the supercritical carbon dioxide production method comprises: step S1, pressurizing the carbon dioxide, and making the pressure value be 85 MPa-105 MPa; in step S2, the pressurized carbon dioxide is heated to a temperature of 32 ℃.
Specifically, in the step of pressurizing carbon dioxide, liquid carbon dioxide is selected. Liquid carbon dioxide with the pressure of 1.0MPa to 1.6MPa in the storage tank 001 is input into the pressure pump 002 through the first pipeline 101, and heat preservation treatment is carried out on the first pipeline 101, so that the first pipeline 101 is prevented from being blocked by the liquid carbon dioxide crystals. The pressurizing pump 002 pressurizes the carbon dioxide to 85-105 MPa, the pressurized carbon dioxide is introduced into the second pipeline 102, and the carbon dioxide in the second pipeline 102 is heated by the heater 010 to make the temperature of the carbon dioxide be higher than or equal to 32 ℃, so that the supercritical carbon dioxide with higher pressure is formed. The heating temperature can be conveniently adjusted by controlling the oil supply of the fuel oil heating furnace through the controller 007 without using formation heat in the preparation process. And the supercritical carbon dioxide can be prepared at one time without repeated separation and extraction, and the pressure of the supercritical carbon dioxide can reach 105 Mpa.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A supercritical carbon dioxide producing apparatus, comprising:
a storage tank (001) for storing carbon dioxide in a fluid state;
a pressurizing pump (002) for compressing the carbon dioxide to 85MPa to 105 MPa;
a first pipeline (101) for communicating the outlet of the storage tank (001) with the inlet of the booster pump (002);
the outlet of the pressure pump (002) is connected with a second pipeline (102), and the second pipeline (102) is provided with a heater (010) for heating the carbon dioxide.
2. The supercritical carbon dioxide production apparatus according to claim 1, characterized in that the first pipeline (101) is provided with a first temperature sensor (003) and a thermo valve (004), and the first temperature sensor (003) and the thermo valve (004) are respectively connected to the controller (007).
3. The apparatus for producing supercritical carbon dioxide according to claim 2, characterized in that the first pipeline (101) is further provided with a first pressure sensor (005) and a pressure control valve (006), and the first pressure sensor (005) and the pressure control valve (006) are respectively connected to the controller (007).
4. Supercritical carbon dioxide production plant according to claim 1, characterized in that the first pipeline (101) is provided with a heat-retaining means.
5. The apparatus for producing supercritical carbon dioxide as defined in claim 1, wherein said heater (010) comprises an oil-fired heater, said oil-fired heater being connected to a controller (007).
6. The apparatus for producing supercritical carbon dioxide according to claim 1, characterized by a first check valve (008) between the outlet of the storage tank (001) and the inlet of the pressurizing pump (002), the first check valve (008) being used to block the flow of fluid from the pressurizing pump (002) into the storage tank (001) along the first pipeline (101).
7. The supercritical carbon dioxide production plant according to claim 1, characterized by the first pipeline (101) being provided with a first filter (009), the first filter (009) being located between the storage tank (001) outlet and the booster pump (002) inlet.
8. Supercritical carbon dioxide production plant according to claim 1, characterized by an emptying valve (018) between the outlet of the pressure pump (002) and the second conduit (102).
9. The apparatus for producing supercritical carbon dioxide according to claim 1, wherein the booster pump (002) has an overflow hole, and the overflow hole is in fluid communication with the storage tank (001) through a third piping (103).
10. The supercritical carbon dioxide production plant according to claim 9, characterized by the third pipeline (103) being provided with a third one-way valve (019) for blocking the flow of fluid from the tank (001) into the overflow aperture along the third pipeline (103).
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| CN201921234143.3U CN210716939U (en) | 2019-07-31 | 2019-07-31 | Supercritical carbon dioxide preparing equipment |
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| CN201921234143.3U CN210716939U (en) | 2019-07-31 | 2019-07-31 | Supercritical carbon dioxide preparing equipment |
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| CN210716939U true CN210716939U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425419A (en) * | 2019-07-31 | 2019-11-08 | 三一石油智能装备有限公司 | Supercritical carbon dioxide producing equipment and supercritical carbon dioxide preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425419A (en) * | 2019-07-31 | 2019-11-08 | 三一石油智能装备有限公司 | Supercritical carbon dioxide producing equipment and supercritical carbon dioxide preparation method |
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