Oil-sand separation device
By using a combination of alkyl tertiary amine hydrophobic solvent and carbon dioxide gas in the oil sand separation device, combined with centrifugal separation and weighing device, the efficient extraction and continuous extraction of oil sands are achieved, and the low efficiency and cost in the prior art are solved The high problem achieves efficient and low-cost oil sand separation effect.
Patent Information
- Application Number
- CN202421050202.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing oil sand separation technology is inefficient, has poor oil production effect, high production costs, and complex equipment design, making it difficult to achieve continuous operation and solvent recovery.
An oil sand separation device was designed, using a combination of an alkyl tertiary amine hydrophobic solvent and carbon dioxide gas, and the solvent becomes hydrophilic through an aeration mechanism, thereby achieving efficient separation of crude oil, and using a centrifugal separation device and weighing The device realizes continuous extraction and solvent recovery.
It improves the extraction efficiency and separation efficiency of oil sands, reduces production costs, achieves high recovery of solvents and crude oil, simplifies the equipment structure, and is suitable for promotion and use.
Smart Images
Figure CN222266200U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of petroleum exploitation, and in particular relates to an oil sand separation device. Background Art
[0002] Oil sands are heavy oils, a type of sand-like mineral deposit containing crude oil, with high viscosity, even in a quasi-solid state. After the oil sands are extracted by water washing or solvent washing, the rich oil resources contained in the ore can be extracted, thereby obtaining a slurry containing three-phase media of oil, water and sand. At present, domestic oil sand separation technology is still in the stage of indoor research. Oil sands are generally separated by water washing, which has a low separation efficiency for oil sands, poor oil production effect of oil sands, and high production costs. Utility Model Content
[0003] The utility model aims to provide an oil sand separation device to solve the above problems existing in the prior art.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an oil sand separation device, comprising a separation container and an oil sand container, wherein the oil sand container is used to store oil sand, the oil sand container extends into the interior of the separation container, and a fluid through hole connected to the separation container is opened on the oil sand container; the separation container is equipped with a feed port, and the feed port is used to provide an alkyl tertiary amine type hydrophobic solvent and water to the separation container, so that the oil in the oil sand is dissolved in the alkyl tertiary amine type hydrophobic solvent; an aeration mechanism is provided inside the separation container, and the aeration mechanism is connected to a carbon dioxide gas storage device, and the carbon dioxide gas storage device is used to provide carbon dioxide gas to the separation container, so that the alkyl tertiary amine type hydrophobic solvent is converted into an alkyl quaternary amine type hydrophilic solvent, thereby separating the oil from the alkyl quaternary amine type hydrophilic solvent.
[0005] As an optional implementation of the above technical solution, it also includes a fixed shell, the oil sand container is fixed on the fixed shell, and the bottom of the oil sand container extends into the interior of the separation container, and the separation container is equipped with a weighing device.
[0006] As an optional implementation of the above technical solution, the oil sand container includes an oil sand storage pipe, and a fluid through hole communicating with the separation container is provided at the bottom of the oil sand storage pipe.
[0007] As an optional implementation of the above technical solution, filter paper is provided in the oil sand container, and the filter paper is coated on the outside of the oil sand.
[0008] As an optional implementation of the above technical solution, the separation container is connected to a centrifugal separation device, and the centrifugal separation device is provided with a solvent recovery port and a water recovery port.
[0009] As an optional implementation of the above technical solution, the centrifugal separation device is arranged at the bottom of the separation container, a connecting pipe is provided between the centrifugal separation device and the separation container, and a switch valve is provided on the connecting pipe.
[0010] As an optional implementation of the above technical solution, the aeration mechanism is connected to an inert gas storage device, and the inert gas storage device is used to provide inert gas, and the inert gas enters the separation container through the aeration mechanism.
[0011] As an optional implementation of the above technical solution, the inert gas is nitrogen.
[0012] As an optional implementation of the above technical solution, a gas connecting pipe is provided between the centrifugal separation device and the inert gas storage device.
[0013] As an optional implementation of the above technical solution, the aeration mechanism includes an aeration coil, which is arranged at the bottom of the separation container, and the aeration coil is connected to an air supply pipe, and the air supply pipe is provided with a gas control valve.
[0014] As an optional implementation of the above technical solution, the alkyl tertiary amine type hydrophobic solvent is N,N-dimethylcyclohexane.
[0015] The beneficial effects of the utility model are:
[0016] The utility model provides an oil sand separation device, which improves the extraction efficiency by introducing gas through an aeration mechanism, and separates crude oil from the alkyl quaternary amine type hydrophilic solvent by converting the alkyl tertiary amine type hydrophobic solvent and the alkyl quaternary amine type hydrophilic solvent, thereby greatly improving the extraction efficiency of oil sand. The utility model has a simple structure, good oil sand extraction effect, high oil sand separation efficiency, low production cost, strong practicality, and is suitable for promotion and use among similar products. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of an implementation method of the utility model.
[0018] In the figure: 1-separation container; 2-oil sand container; 3-feed port; 4-carbon dioxide gas storage device; 5-fixed shell; 6-weighing device; 7-filter paper; 8-centrifugal separation device; 9-solvent recovery port; 10-water recovery port; 11-connecting pipe; 12-switch valve; 13-aeration coil; 14-gas supply pipe; 15-gas control valve; 16-inert gas storage device. DETAILED DESCRIPTION
[0019] like Figure 1As shown, this embodiment provides an oil sand separation device, including a separation container 1 and an oil sand container 2. The separation container 1 is used as an extraction container for oil sands to facilitate the separation of crude oil. The oil sand container 2 is used to store oil sands, and the oil sand container 2 extends into the interior of the separation container 1. The oil sand container 2 is provided with a fluid through hole connected to the separation container 1. The oil sand container 2 extends into the interior of the separation container 1, and the extraction solvent can enter the oil sand container 2 through the fluid through hole, so that the crude oil in the oil sands is dissolved in the extraction solvent.
[0020] like Figure 1 As shown, the separation container 1 is provided with a feed port 3, and the feed port 3 is used to provide an alkyl tertiary amine type hydrophobic solvent and water to the separation container 1, so that the oil in the oil sand is dissolved in the alkyl tertiary amine type hydrophobic solvent. The alkyl tertiary amine type hydrophobic solvent can be N, N-dimethylcyclohexane, and the amount of the alkyl tertiary amine type hydrophobic solvent needs to cover the oil sand in the oil sand container 2. The alkyl tertiary amine type hydrophobic solvent is used as an extraction solvent to extract the crude oil.
[0021] An aeration mechanism is provided inside the separation container 1, and the aeration mechanism is connected to a carbon dioxide gas storage device 4, and the carbon dioxide gas storage device 4 is used to provide carbon dioxide gas to the separation container 1, so as to convert the alkyl tertiary amine type hydrophobic solvent into an alkyl quaternary amine type hydrophilic solvent, thereby separating the oil from the alkyl quaternary amine type hydrophilic solvent. The aeration mechanism can aerate the alkyl tertiary amine type hydrophobic solvent and water in the separation container 1, enhance the mixing effect, and is similar to a stirring function, so that the crude oil extraction efficiency is improved.
[0022] The carbon dioxide gas storage device 4 can provide carbon dioxide gas to the aeration mechanism. After the crude oil extraction is completed, the crude oil is dissolved in the alkyl tertiary amine type hydrophobic solvent. The introduction of carbon dioxide can protonate the tertiary amine and change it into a hydrophilic ionic state. The alkyl tertiary amine type hydrophobic solvent becomes an alkyl quaternary amine type hydrophilic solvent. The alkyl quaternary amine type hydrophilic solvent is dissolved in water. The crude oil is located in the upper layer, and the alkyl quaternary amine type hydrophilic solvent and water are located in the lower layer, thereby realizing the separation of the crude oil and the alkyl quaternary amine type hydrophilic solvent.
[0023] The utility model improves the extraction efficiency by introducing gas through an aeration mechanism, and separates crude oil from the alkyl quaternary amine type hydrophilic solvent by converting the alkyl tertiary amine type hydrophobic solvent and the alkyl quaternary amine type hydrophilic solvent, thereby greatly improving the extraction efficiency of oil sands. The utility model has a simple structure, good oil sand extraction effect, high oil sand separation efficiency, low production cost, strong practicality, and is suitable for promotion and use among similar products.
[0024] like Figure 1As shown, in this embodiment, the oil sand separation device also includes a fixed shell 5, the oil sand container 2 is fixed on the fixed shell 5, and the bottom of the oil sand container 2 extends into the interior of the separation container 1, and the separation container 1 is equipped with a weighing device 6. The weight of the separation container 1 is detected by the weighing device 6 to monitor the extraction process. When the value of the separation container 1 does not change substantially, it indicates that the crude oil in the oil sand has been dissolved into the alkyl tertiary amine type hydrophobic solvent, and the crude oil extraction is completed. Among them, the oil sand container 2 includes an oil sand storage pipe, and the bottom of the oil sand storage pipe is provided with a fluid through hole connected to the separation container 1. Preferably, a filter paper 7 is provided in the oil sand container 2, and the filter paper 7 is coated on the outside of the oil sand. The filter paper 7 is added to prevent the oil sand particles from clogging the fluid through hole of the oil sand storage pipe and affecting the extraction process.
[0025] In one embodiment, the separation container 1 is connected to a centrifugal separation device 8, and the centrifugal separation device 8 is provided with a solvent recovery port 9 and a water recovery port 10. Specifically, the centrifugal separation device 8 is arranged at the bottom of the separation container 1, and a connecting pipe 11 is provided between the centrifugal separation device 8 and the separation container 1, and a switch valve 12 is provided on the connecting pipe 11. The alkyl quaternary amine type hydrophilic solvent and water are located in the lower layer, and enter the centrifugal separation device 8 through the connecting pipe 11. The centrifugal separation device 8 separates the alkyl quaternary amine type hydrophilic solvent and water, and the separated alkyl quaternary amine type hydrophilic solvent is recovered through the solvent recovery port 9, and the separated water is recovered through the water recovery port 10. The alkyl quaternary amine type hydrophilic solvent can be introduced into nitrogen to discharge carbon dioxide in the system, so that the alkyl quaternary amine type hydrophilic solvent returns from the hydrophilic state to the alkyl tertiary amine type hydrophobic solvent in the original lipophilic state, thereby realizing the reuse of the solvent. The whole process avoids the introduction of heat source, reduces energy consumption, and the integrated design also avoids the loss of transportation.
[0026] like Figure 1 As shown, specifically, the aeration mechanism includes an aeration coil 13, which is arranged at the inner bottom of the separation container 1, and the aeration coil 13 is connected to an air supply pipe 14, and a gas control valve 15 is arranged on the air supply pipe 14. When the gas control valve 15 is opened, carbon dioxide gas or other gases can enter the aeration coil 13 through the air supply pipe 14.
[0027] Wherein, the aeration mechanism is connected to an inert gas storage device 16, and the inert gas storage device 16 is used to provide inert gas, and the inert gas enters the separation container 1 through the aeration mechanism. A gas connecting pipe is provided between the centrifugal separation device 8 and the inert gas storage device 16, one end of the gas connecting pipe is connected to the centrifugal separation device 8, and the other end of the gas connecting pipe is connected to the gas supply pipe 14, and a valve is provided on the gas connecting pipe. Preferably, the inert gas is nitrogen. Nitrogen enters the aeration coil 13 to aerate the alkyl tertiary amine type hydrophobic solvent and water, enhances the mixing effect of the alkyl tertiary amine type hydrophobic solvent and crude oil, and improves the crude oil extraction efficiency. Nitrogen can also enter the centrifugal separation device 8 through the gas connecting pipe to aerate the alkyl quaternary amine type hydrophilic solvent and water, so that the alkyl quaternary amine type hydrophilic solvent returns from the hydrophilic state to the alkyl tertiary amine type hydrophobic solvent in the original oleophilic state, thereby realizing the reuse of the solvent.
[0028] The oil sand separation device of the utility model is used as follows: first put a replaceable filter paper 7 into the oil sand container 2, put oil sand in the filter paper 7, install the oil sand container 2 on the fixed shell 5, and the bottom of the oil sand container 2 extends into the interior of the separation container 1. At the feed port 3, an alkyl tertiary amine type hydrophobic solvent and an appropriate amount of water are introduced so that the alkyl tertiary amine type hydrophobic solvent submerges the inner oil sand of the oil sand container 2, and the amount of the injected alkyl tertiary amine type hydrophobic solvent and water is recorded by a weighing device 6. Open the gas control valve 15 to introduce N2, and N2 enters the separation container 1 through the aeration coil 13 for aeration, so that the oil sand is fully mixed with the alkyl tertiary amine type hydrophobic solvent, and the crude oil of the oil sand is dissolved in the alkyl tertiary amine type hydrophobic solvent. During the extraction process, when the numerical value of the weighing device 6 changes little or does not change, close the gas control valve 15, take out the oil sand container 2 and stop extraction. Subsequently, enter the oil / solvent low energy consumption separation process. Open the gas control valve 15 and pass CO2 into the separation container 1, so that the original alkyl tertiary amine type hydrophobic solvent becomes an alkyl quaternary amine type hydrophilic solvent, the crude oil is located in the upper layer, and the alkyl quaternary amine type hydrophilic solvent and water are located in the lower layer, so that the crude oil and the alkyl quaternary amine type hydrophilic solvent are separated. Open the switch valve 12 again, so that the alkyl quaternary amine type hydrophilic solvent and water enter the centrifugal separation device 8, and pass N2 into the centrifugal separation device 8 through the gas control valve 15, so that the alkyl quaternary amine type hydrophilic solvent returns to the alkyl tertiary amine type hydrophobic solvent in the initial oleophilic state from the hydrophilic state, then obtain the alkyl tertiary amine type hydrophobic solvent from the solvent recovery port 9, and obtain water from the water recovery port 10, and the recovered alkyl tertiary amine type hydrophobic solvent can be re-performed through the feed port 3 again. The above-mentioned circulation process such as oil sand extraction and oil-water separation.
[0029] Existing oil sand separation devices often have steps that cannot be discontinuous, and the liquid needs to be transported multiple times in different steps, resulting in loss of solvent or crude oil. In response to this problem, the utility model integrates the extraction of oil from oil sands, oil-water separation, and solvent recovery into one, which can achieve low-energy oil-water separation, and at the same time, can achieve dual recycling of crude oil and solvent, can perform continuous operations, can greatly reduce the loss of solvent and crude oil, achieve high recovery of solvent and crude oil, and reduce environmental pollution. Moreover, the introduction of an aeration mechanism for sufficient aeration can enhance mixing and improve extraction efficiency. In addition, the device is equipped with a weighing device 6, which can monitor the extraction process in real time.
[0030] In the description of the present utility model, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. In the absence of mutual contradictions, those skilled in the art may combine the features of different embodiments. The scope of protection of the present utility model is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present utility model, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the scope of protection of the present utility model.
Claims
1. An oil sand separation device, characterized in that: The invention comprises a separation container (1) and an oil sand container (2), wherein the oil sand container (2) is used to store oil sand, the oil sand container (2) extends into the interior of the separation container (1), and a fluid through hole connected to the separation container (1) is provided on the oil sand container (2); the separation container (1) is provided with a feed port (3), and the feed port (3) is used to provide an alkyl tertiary amine type hydrophobic solvent and water to the separation container (1), so that the oil in the oil sand is dissolved in the alkyl tertiary amine type hydrophobic solvent; an aeration mechanism is provided inside the separation container (1), and the aeration mechanism is connected to a carbon dioxide gas storage device (4), and the carbon dioxide gas storage device (4) is used to provide carbon dioxide gas to the separation container (1), so that the alkyl tertiary amine type hydrophobic solvent is converted into an alkyl quaternary amine type hydrophilic solvent, thereby separating the oil from the alkyl quaternary amine type hydrophilic solvent.
2. The oil sand separation device according to claim 1, characterized in that: It also comprises a fixed shell (5), the oil sand container (2) is fixed on the fixed shell (5), and the bottom of the oil sand container (2) extends into the interior of the separation container (1), and the separation container (1) is equipped with a weighing device (6).
3. The oil sand separation device according to claim 1, characterized in that: The oil sand container (2) is provided with filter paper (7), and the filter paper (7) is coated on the outside of the oil sand.
4. The oil sand separation device according to claim 1, characterized in that: The separation container (1) is connected to a centrifugal separation device (8), and the centrifugal separation device (8) is provided with a solvent recovery port (9) and a water recovery port (10).
5. The oil sand separation device according to claim 4, characterized in that: The centrifugal separation device (8) is arranged at the bottom of the separation container (1), a connecting pipe (11) is arranged between the centrifugal separation device (8) and the separation container (1), and a switch valve (12) is arranged on the connecting pipe (11).
6. The oil sand separation device according to claim 4, characterized in that: The aeration mechanism is connected to an inert gas storage device (16), and the inert gas storage device (16) is used to provide inert gas. The inert gas enters the separation container (1) through the aeration mechanism.
7. The oil sand separation device according to claim 6, characterized in that: The inert gas is nitrogen.
8. The oil sand separation device according to claim 6, characterized in that: A gas communication pipe is provided between the centrifugal separation device (8) and the inert gas storage device (16).
9. The oil sand separation device according to claim 1, characterized in that: The aeration mechanism comprises an aeration coil (13), wherein the aeration coil (13) is arranged at the bottom of the separation container (1), the aeration coil (13) is connected to an air supply pipe (14), and the air supply pipe (14) is provided with a gas control valve (15).
10. The oil sand separation device according to claim 1, characterized in that: The alkyl tertiary amine type hydrophobic solvent is N,N-dimethylcyclohexane.