KR102618017B1 - System for separation of liquid and solid - Google Patents

Abstract

The present invention relates to oil sand, which is a multi-phase mixture of bitumen, water, and gas, which is an extra-heavy oil in which polar and non-polar substances divided into asphaltene and maltene (maltene or petrolenes) are complexly combined. In the process of separating and recovering each type using separation methods such as sedimentation, sedimentation, overflow, and gas recovery, the existing volume is large, construction and manufacturing costs are high, sand removal efficiency is low, and waste disposal is difficult. It is about a solid separation system that is an improvement on the existing device.

Description

Solid separation system {System for separation of liquid and solid}

The present invention relates to a solid separation system, and more specifically, bitumen, an ultra-heavy oil in which polar and non-polar substances divided into asphaltene and maltene (maltene or petrolenes) are complexly combined, water, and In the process of separating and recovering oil sand, which is a multi-phase mixture of gases, by type using separation methods such as sedimentation, sedimentation, overflow, and gas recovery, the existing volume is large and construction and manufacturing costs are high. It is about a solid separation system that improves existing devices that have low sand removal efficiency and difficulties in waste treatment.

Oil sands, referred to as unconventional oil resources, rapidly emerged as an alternative resource to crude oil as it received attention as one of the fossil fuels that could replace oil after the first oil shock in 1973. After 2000, high oil prices continued and large-scale separation process technology was developed. With its introduction, oil sands development became active.

In Korea's case, Korea National Oil Corporation has been promoting participation in oil sands development projects since around 1999 in order to secure overseas independently developed crude oil, and interest in oil sands is increasing both domestically and internationally.

The petroleum component extracted from the oil sands is a heavy, sticky, black viscous oil called bitumen, which accounts for about 10 to 12% of the oil sands. Conventional crude oil is lighter than water, but bitumen has a specific gravity similar to water.

Since the bitumen does not flow in boreholes or oil pipelines in its natural state, it is obtained by adding steam or mixing it with a diluent (ultra-light crude oil or light petroleum product) to lower the specific gravity and viscosity and then transporting it to the oil pipeline.

Therefore, bitumen contains a large amount of water, so to recover the oil, first separation FWKO (Free Water Knock-Out), second separation using demulsifier chemicals, electric field, etc. retrieve it

The produced water generated after oil recovery still contains a large amount of oil and dissolved substances, so in order to discharge or recycle it, it must go through the produced water treatment process to treat water containing less than 15 ppm of oil before it can be discharged into the sea.

The production cost to extract bitumen from oil sands is about $20 to $25 per barrel, which is higher than the cost of normal crude oil production, making it uneconomical. However, research and development and demand as an alternative fuel are increasing due to the continuous rise in oil prices.

Generally known bitumen extraction methods can be divided into a method of extracting bitumen after mining oil sands (post-mining extraction method), and a method of extracting bitumen directly in-situ.

Looking at the specific extraction method, the hot water extraction process, which was first studied in the 19th century and can recover about 90% of bitumen by injecting and mixing heated water, is a method of extracting bitumen after mining oil sands.

By injecting high-pressure, high-temperature steam (approximately 350℃) into the area where the oil sand is buried, the oil sand chunks are broken into pieces by the steam pressure, and the bitumen is melted by the high heat of the steam, and then the heated bitumen is pumped to the ground. CSS (cyclic steam stimulation) method: After drilling two parallel and horizontal wells, steam is injected into the upper well to generate hot heat to lower the viscosity of the crude oil, and when the crude oil with the reduced viscosity accumulates in the well located at the bottom, SAGD (steam assisted gravity drainage) method, which pumps water to the ground, is applied to the in-situ extraction method.

In addition, in the open-pit mining method, the oil sand existing on the surface of the earth is collected, the collected oil sand is placed in a crusher to crush sand and stones, hot water is added to the oil sand, and the oil sand mixture is placed in a decomposition container. There is a method that includes the steps of separating sand and bitumen, removing the bubbles, and then extracting the bitumen through a centrifuge.

In addition, the VAPEX (vapor extraction process) technology is similar to the SAGD technology, but injects vaporized solvents such as ethane and propane instead of water to form a vapor chamber underground and extract bitumen using gravity. is also known.

Korean Patent Publication No. 10-2004259 discloses a separation tank formed including an inlet into which a multi-phase mixture including sand, water, bitumen and gas flows, and an outlet into which the multi-phase mixture flowing into the inlet is separated and discharged. ; a sedimentation treatment unit including a plurality of settling walls provided at a predetermined height on the bottom of the inlet side inside the separation tank so that the sand contained in the mixture flowing into the inlet stays and falls due to the difference in specific gravity and settles; A sedimentation treatment unit including a plurality of settling plates provided at a predetermined height from the bottom of the separation tank at a rear position of the sedimentation treatment unit so that the bitumen and water that have passed through the sedimentation treatment unit remain and are separated into layers by the difference in specific gravity. ; An overflow plate provided at a predetermined height from the bottom of the separation tank at the rear of the sedimentation treatment unit so that the bitumen containing fine water particles that have passed through the sedimentation treatment unit stays and the fine water particles sink due to the difference in specific gravity. A bitumen recovery unit comprising: and a gas recovery unit that separates and recovers the gas collected inside the separation tank, wherein the plurality of settling walls extend in a direction perpendicular to the flow direction of the mixture and are spaced apart from each other, and each settling wall The wall is composed of a plurality of sheet piles connected in series, and the sheet piles are disposed in a direction perpendicular to the flow direction of the mixture, a settling plate extending upward from the inner bottom of the separation tank, and the mixture flowing into the inlet. In order to collect the contained sand, it is configured to include a C-shaped sand pocket that extends integrally from one end or both ends of the settling plate to be open toward the front side and extends upward from the bottom of the inside of the separation tank, The overflow plate includes a flat member extending upward from the bottom of the separation tank to be disposed in a direction perpendicular to the flow direction of the mixture; and a C-shaped water pocket formed integrally along the upper end of the flat member and open toward the front. A bitumen separation device for oil sand has been disclosed, which is characterized in that it is formed including a C-shaped water pocket. However, there has been no disclosure of a solid separation system that separates the main components of oil sands, namely gas, sand, water, and oil, using a hydrocyclone and a membrane in which a water film is formed.

Korean Patent Publication No. 10-2020-0031832 discloses a surge vessel that stores produced water generated from an oil well, a hydrocyclone that centrifuges the produced water supplied from the surge vessel to separate it into oil and produced water, and a primary separation device. A gas flotation separator that separates fine oil particles from produced water using gas, a produced water drain line that drains the produced water separated from the gas flotation separator, and a produced water drain line that branches off from the produced water drain line and sends the treated produced water to a surge container. A produced water treatment system that includes an oil-water separation fluid recovery line and is compensated with produced water treated through the oil-water separation fluid recovery line when the amount of produced water flowing into the hydrocyclone is less than the appropriate amount of produced water inflow. This is disclosed. However, there has been no disclosure regarding the solid separation system technology that separates the main components of oil sands, namely gas, sand, water, and oil, using a hydrocyclone and a membrane in which a water film is formed.

Korean Patent Publication No. 10-2015-0025228 discloses a main body supporting the components: a supply manifold installed at the upper rear of the main body and supplying excavated waste soil to each cyclone; A plurality of cyclones installed at the upper rear of the main body to separate mud mixed in excavation waste soil supplied from the supply manifold using centrifugal force; a recovery manifold installed at the top of each cyclone to recover mud separated through each cyclone; A screen installed at the lower part of the main body to filter out small particles contained in rocks and gravel discharged from each cyclone; A desander is disclosed that includes a vibration motor installed at the bottom of the main body and applying vibration to the screen. However, there has been no disclosure regarding the solid separation system technology that separates the main components of oil sands, namely gas, sand, water, and oil, using a hydrocyclone and a membrane in which a water film is formed.

In Korea Public Utility Model Publication No. 20-1998-0027663, a primary screen to separate coarse stones and pebbles at the bottom of the feed box and a receiving tank to accommodate the primarily separated bentonite are installed up and down, and the receiving tank is installed on both left and right sides. A storage tank is installed to store the bentonite transferred from the receiving tank through a transfer pipe, and a secondary screen is installed on the upper part, and on the side, there is a circulation hole and discharge hole that are opened and closed by an opening and closing ball installed inside one side of the storage tank. A chamber is installed, and at the top of the chamber, a cyclone is installed to centrifuge the bentonite mixture transferred from the storage tank using the principle of an ejector, and the underflow nozzle that discharges the centrifuged heavy sand particles is 2. A sand separator for underground continuous wall construction is disclosed where the overflow nozzle through which light bentonite liquid from which particles are removed is disposed on the car screen and above the circulation hole of the chamber, respectively. however. There has been no disclosure regarding the solid separation system technology that separates the main components of oil sands, namely gas, sand, water, and oil, using a hydrocyclone and a membrane in which a water film is formed.

Therefore, when oil sand composed of bitumen, water, sand, and fine clay is created, the oil sand is injected into the hydrocyclone under centrifugal force in the tangential direction and generates an internal swirling flow depending on the characteristics of the shape, thereby generating centrifugal force. As the pressure in the center of the hydrocyclone becomes lower than that of the atmosphere, air flows in and forms an air core. Therefore, sand and viscosity are discharged downward according to gravity, and bitumen and water are discharged upward by the internal air core. Therefore, it is necessary to develop a solid separation system that separates the main components of oil sands, such as gas, sand, water, and oil, using a hydrocyclone and membrane with a water film formed.

Korean Patent Publication No. 10-2004259 Korean Patent Publication No. 10-2020-0031832 Korean Patent Publication No. 10-2015-0025228 Korean Public Utility Model Publication No. 20-1998-0027663

The present invention is to solve the above problems, and bitumen, an ultra-heavy oil in which polar and non-polar substances divided into asphaltene and maltene (maltene or petrolenes) are complexly combined, water, and gas In the process of separating and recovering oil sand, which is a mixed multi-phase mixture, by type using separation methods such as sedimentation, sedimentation, overflow, and gas recovery, the existing method is large in volume, requires high construction and manufacturing costs, and is low. The purpose is to provide a solid separation system that improves the existing equipment that has difficulty in sand removal efficiency and waste disposal to separate the main components of oil sand, namely gas, sand, water, and oil, using a hydrocyclone and membrane with a water film formed. Do it as

The solid separation system of the present invention for achieving this purpose includes a shaker screen 100 through which liquid containing solids is first introduced and coarse particles are removed; A descender hydrocyclone (10) that supplies the liquid containing the solid material to the inlet (110) and separates it into a first solid and a first liquid; A gas stripper (500) connected to the liquid discharge pipe (310) of the hydrocyclone to separate the gaseous material and the first liquid material from the first liquid; and an accumulator (400) connected to the solid discharge port (210) of the hydrocyclone to separate solid material and second liquid material from the first solid material; A solid separation system including a can be provided.

In addition, the hydrocyclone includes an inflow pipe 110 for guiding the first liquid containing the solid material; a cylindrical portion 100 provided at a predetermined position on the outer surface of the hydrocyclone and forming an empty space; A conical part (200) having an upper and lower narrow structure, the upper part of which is connected to the lower part of the cylindrical part (100), and the lower part of which is provided with a solid discharge port (210); a cylindrical liquid discharge pipe 310 with an empty interior for discharging the first liquid from which the solids have been removed to the outside; a lid 300 provided on an upper part of the cylindrical portion 100 disposed in a penetrating state; Includes Can include.

In addition, it may further include a desilter hydrocyclon 20 that is connected to the rear end of the stripper and separates the first liquid material into a second solid and a second liquid.

In addition, the second liquid separated and discharged from the desilter hydrocyclone may be supplied to a centrifugal separator 30 to finally separate it into a third solid and a third liquid.

Additionally, a plurality of the desander hydrocyclones and/or the desander hydrocyclones may be connected in series or parallel.

In addition, it may further include a membrane 40 through which any one of the first liquid material, the second liquid material, and the third liquid material is supplied and separated into water and oil.

In addition, a gas storage tank 50 for storing the gaseous substances; A water storage tank (60) storing the water; An oil storage tank (70) storing the oil; and a solid storage tank 80 that stores the first solid, the second solid, and the third solid, and a double pressure control valve may be formed at the inlet and outlet of the storage tank.

Additionally, the inner surface of the cylindrical portion may include a plurality of protrusions 120 formed at predetermined intervals.

In addition, the cylindrical part includes an inner tube 130 forming the inner surface; and an outer tube 140 forming the outer surface of the cylindrical part and formed at a predetermined distance from the inner tube.

Additionally, a through hole 121 that supplies water to the inner surface may be formed at a predetermined position of the protrusion.

The present invention can also be provided in various combinations of means for solving the above problems.

The solid separation system of the present invention primarily separates solid materials using the centrifugal force of a hydrocyclone and secondarily separates solid, liquid, and gaseous materials through a gas stripper and strainer, thereby improving the separation efficiency of oil sands.

In addition, by placing a porous and hydrophilic structure to partially close the passage through which the sand-oil-water mixture in the form of an oil emulsion passes, the oil droplets contained in the sand-oil-water mixture form a porous and hydrophilic structure. This has the effect of quickly and effectively separating the mixture into water and oil by merging with each other during bypass or direct passage.

In addition, a structure capable of forming a water film, preferably a protrusion, is formed on the inner surface of the cyclone, which has the effect of reducing internal wear by forming a water film. If necessary, water is supplied through the hole formed in the protrusion. A water film can be formed consistently.

There is an advantage in increasing the production efficiency of bitumen by separating and recovering sand, water, bitumen, and gas by type at the site where oil sand, which is a multi-phase mixture of sand, water, bitumen, and gas, is mined.

In addition, all separation facilities are installed in a single separation tank, making it easy to transport and install on site, resulting in the use of economical and stable facilities.

1 is a conceptual diagram of a solid separation system according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a descender according to an embodiment of the present invention.
Figure 3 is a cross-sectional view of a descender according to the shape of the inlet pipe according to an embodiment of the present invention.
Figure 4 is a plan view of a protrusion formed on the inner surface of a cylindrical portion according to an embodiment of the present invention.
Figure 5 is a cross-sectional conceptual diagram of a protrusion formed on the inner surface of a cylindrical portion according to an embodiment of the present invention.
Figure 6 is a perspective view and a cross-sectional view of a through hole formed in a protrusion according to an embodiment of the present invention.
Figure 7 is a cross-sectional view of a venturi nozzle combined with a lifting and lowering unit according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, an embodiment in which the present invention can be easily implemented by those skilled in the art will be described in detail. However, when explaining in detail the operating principle of a preferred embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In addition, the same reference numerals are used for parts that perform similar functions and actions throughout the drawings. Throughout the specification, when a part is said to be connected to another part, this includes not only cases where it is directly connected, but also cases where it is indirectly connected through another element in between. Additionally, including a certain component does not mean excluding other components unless specifically stated to the contrary, but rather means that other components may be further included.

In addition, limitations or additions to an embodiment in this specification not only apply to a specific embodiment, but may also be equally applied to other embodiments.

In addition, throughout the description and claims of the present invention, the singular number also includes the plural unless otherwise specified.

The present invention will be described in detail with reference to the drawings.

1 is a conceptual diagram of a solid separation system according to an embodiment of the present invention.

A shaker screen (100) through which liquid containing solids is first introduced and coarse particles are removed; A descender hydrocyclone (10) that supplies the liquid containing the solid material to the inlet (110) and separates it into a first solid and a first liquid; A gas stripper (500) connected to the liquid discharge pipe (310) of the hydrocyclone to separate the gaseous material and the first liquid material from the first liquid; and an accumulator (400) connected to the solid discharge port (210) of the hydrocyclone to separate solid material and second liquid material from the first solid material; A solid separation system including a can be provided.

The coarse particles may be 1 mm to 200 mm or less, preferably 10 mm to 400 mm, and more preferably 50 mm to 800 mm or less.

The coarse particles may be particles of 20 mesh or less.

The first solid may be particles greater than 20 mesh and less than 100 mesh.

The second solid may be particles greater than 60 mesh and less than 200 mesh.

If it is outside the above range, efficient particle removal performance cannot be achieved.

Particles outside the above range may reduce the separation efficiency of the hydrocyclone linked to the rear end of the shaker screen.

When the flow rate of liquid containing solids, preferably oil sand, flowing into the hydrocyclone is small, it can be configured to re-supply the final treated water from the water storage tank to prevent deterioration of the performance of the hydrocyclone. there is.

In addition, the sand oil may be injected at an injection pressure of 10 bar to 30 bar and a temperature of more than 0°C to less than 90°C.

In addition, a pressurizing pump for supplying the oil sand under pressure may be further included between the reservoir capable of storing the oil sand discharged from the oil well and the inflow pipe.

The first liquid and/or the second liquid may be composed of water and oil.

In addition, the hydrocyclone includes an inflow pipe 110 for guiding the first liquid containing the solid material; a cylindrical portion 100 provided at a predetermined position on the outer surface of the hydrocyclone and forming an empty space; A conical part (200) having an upper and lower narrow structure, the upper part of which is connected to the lower part of the cylindrical part (100), and the lower part of which is provided with a solid discharge port (210); a cylindrical liquid discharge pipe 310 with an empty interior for discharging the first liquid from which the solids have been removed to the outside; a lid 300 provided on an upper part of the cylindrical portion 100 disposed in a penetrating state; Includes Can include.

A plurality of the inlet pipes in the form of the tangential inlet may be formed horizontally. Assuming the hydrocyclone is circular, it can be formed as 2 at 180-degree intervals, 4 at 90-degree intervals, 6 at 60-degree intervals, and 12 at 30-degree intervals.

A plurality of inlet pipes may be formed vertically. Assuming that the hydrocyclone has a cylindrical shape, an additional inflow pipe may be formed above or below the inlet pipe.

In addition, it may further include a desilter hydrocyclon 20 that is connected to the rear end of the stripper and separates the first liquid material into a second solid and a second liquid.

In addition, the second liquid separated and discharged from the desilter hydrocyclone may be supplied to a centrifugal separator 30 to finally separate it into a third solid and a third liquid.

The third solid may be particles exceeding 200 mesh.

If it is outside the above range, efficient particle removal performance cannot be achieved.

Additionally, a plurality of the desander hydrocyclones and/or the desander hydrocyclones may be connected in series or parallel.

The hydrocyclone is formed in plural numbers and can respond variably according to the oil sand treatment flow rate. The hydrocyclones can be formed in parallel or in series.

The reason why the hydrocyclones are formed in parallel is that the oil sand flow rate to be treated must be equally distributed and treated under the same injection pressure and temperature conditions, which is advantageous for the separation efficiency of the solid, gas, and liquid components at the downstream stage.

In addition, it may further include a membrane 40 through which any one of the first liquid material, the second liquid material, and the third liquid material is supplied and separated into water and oil.

The form of the membrane is not limited as long as it can effectively separate water and oil. Preferably it may be a tubular membrane.

Additionally, in the mobile oil sand fractionation device, the inlet pipe may be at a positive pressure than the solid discharge port and the liquid discharge pipe.

In addition, the front end of the membrane may have a pipe diameter changing unit that changes the pipe diameter in the pipe through which the mixture of the first liquid and the second liquid flows.

Additionally, the pipe diameter of the pipe diameter change unit may be smaller than the pipe diameter.

In order to increase the separation efficiency of liquid mixtures having differences in density and specific gravity of the pipe size change unit, a separation derivative may be formed in the pipe size change unit.

The cross-sectional shape of the pipe diameter change unit may be one or more of a right triangle, triangle, circle, and amorphous shape.

In addition, a gas storage tank 50 for storing the gaseous substances; A water storage tank (60) storing the water; An oil storage tank (70) storing the oil; and a solid storage tank 80 that stores the first solid, the second solid, and the third solid, and a double pressure control valve may be formed at the inlet and outlet of the storage tank.

Additionally, a control unit for driving the solid separation system may be included.

The control unit is important for controlling the pressure of the solid separation system. In order to control the pressure and temperature, a sensor may be included to sense each component. The temperature and pressure of the inlet pipe, the front and rear ends of the gas stripper, the solid discharge port, and the liquid discharge pipe can be sensed.

Figure 2 is a cross-sectional view of a descender according to an embodiment of the present invention.

An inflow pipe 110 for guiding liquid containing solids; a cylindrical portion 100 provided on the outer surface at a predetermined position and forming an empty space; A conical part (200) having an upper and lower narrow structure, the upper part of which is connected to the lower part of the cylindrical part (100), and the lower part of which is provided with a solid discharge port (210); A cylindrical liquid discharge pipe 310 with an empty interior for discharging the liquid from which the solids have been removed to the outside; a lid 300 provided on an upper part of the cylindrical portion 100 disposed in a penetrating state; It includes an accumulator 400 that is connected to the solid discharge port 210 to accumulate and discharge the solids, and the inner surface of the cylindrical portion may provide a descender in which a water film is formed.

To describe the above configurations in more detail, the cylindrical portion 100 is a long cylindrical shape with a predetermined height and inner diameter.

The cylindrical portion 100 is made of a metal material and is provided with an inlet pipe 110 through which a liquid containing solids having a predetermined cross-sectional area biased outward from the center of the axis is supplied, and the liquid containing various particulate solids is provided. , Preferably, oil sand and steam are supplied, and oil sand containing a large amount of mixed water flows into the space of the cylindrical portion 100.

The cone part 200 has an upper-lower narrow structure whose cross-sectional area gradually decreases as it goes downward. The upper part of the conical part 200 is connected to the lower part of the cylindrical part 100, and the lower part of the conical part 200 is in the liquid. There is a solid discharge port 210 through which the contained particulate solid material, preferably mud, bentonite, and some liquid are discharged together.

In addition, a lid 300 made of a metal material is attached to the upper part of the cylindrical part 100 to seal the cylindrical part 100 except for the area where the liquid discharge pipe 310, which will be described later, protrudes to the outside. .

The liquid discharge pipe 310 is a long hollow cylindrical shape made of metal and is located near the center of the lid 300. One end protrudes above the lid 300 at a certain height, and the other end is part of the cylindrical part. It is located at a predetermined depth of (100).

In addition, a vane 310 may be formed at a predetermined position on the inner surface of the lid 300 to induce the rotation of liquid containing solids flowing into the inner space of the cylindrical part 100. The vane may be formed to induce rotation of the liquid containing solids supplied from the inlet pipe in a clockwise or counterclockwise direction.

To be more specific, the vanes may be formed to protrude radially around a liquid discharge pipe formed in the center of the lid. An inlet pipe that supplies liquid containing solids to form a swirling flow along the vane may be formed to communicate tangentially with the cylindrical portion.

It is obvious that one or more vanes may be formed on the lid, and that there is no limit to the shape and number of the vanes as long as they are of a shape and number for forming a swirl of the liquid including solids. By connecting a manifold in communication with a liquid inlet pipe containing solids and a liquid supply pump, liquid containing solids can be supplied intermittently or non-intermittently from the liquid containing container.

The inlet pipe is a hole formed to spray the liquid contained in the liquid container toward the inner wall of the cylindrical portion 100, and the liquid is sprayed by the pressing force of a liquid supply pump (not shown) connected to the liquid inlet pipe. It can be.

The descender can be divided into a wellhead cyclone desander and an inline descender depending on the particle size of the solids removed, but the concept of particle removal technology is the same.

The descender cyclone for the wellhead supports cyclone inlet sizes ranging from 50 to 400 mm. Generally, the size of solids that can be treated is less than 3 mm, but large solids can also be removed.

The inline descender cyclone can separate solids at the 90μm level, and the processing capacity can be 500 to 600 GPM.

Additionally, the hydrocyclone can also be applied to a desilter.

The hydrocyclone has a diameter of 0.01m~1.2m, can handle a flow rate of up to 23,000L/min, and is effective in separating suspended matter containing particles with a particle diameter of 5㎛~150㎛.

In general, the smaller the diameter of the hydrocyclone, the greater the difference in centrifugal force, making it easier to separate fine particles (<10μm).

초과 내지 90

미만으로 유입관으로 유입될 수 있다.The injection pressure of the liquid containing the solids, preferably sand oil, is 10 bar to 30 bar, and the temperature is 0.

Exceeding 90

Less than that can flow into the inlet pipe.

A pressure pump may be additionally provided to supply liquid containing the solid material.

Additionally, a shaker screen 500 that communicates with the inlet pipe and is used to remove coarse particles among the solids may be connected.

Figure 3 is a cross-sectional view of a descender according to the shape of the inlet pipe according to an embodiment of the present invention.

Additionally, one or more inlet pipes may be formed in a tangential direction on the side wall of the cylindrical portion.

One or more inlet pipes may be formed at intervals of 30 degrees, 60 degrees, 90 degrees, and 180 degrees based on the central axis of the cylindrical cross section.

The supply flow rate per unit time supplied to the inlet pipe can be branched and supplied through the inlet pipe, and accordingly, the cross-sectional area of the inlet pipe supplied to the cylindrical portion at the end of the inlet pipe is changed to maintain the linear velocity of the fluid. It can be.

Additionally, the inlet pipe may be formed at a predetermined angle on the same plane of the side wall of the cylindrical part.

In order for the liquid containing the solids to be easily separated into solids and liquids by centrifugal force through rotation inside the hydrocyclone, the inlet pipe may be formed to be inclined to adjust the residence time of the fluid.

The inlet pipe may be formed parallel to the same plane of the side wall of the cylindrical part, or may be formed inclined upward or downward at an angle of 0 degrees or more and less than 90 degrees on the plane.

The predetermined angle may preferably be 10 degrees or more and less than 60 degrees, and more preferably 20 degrees or more and less than 40 degrees.

Additionally, the inlet pipe may be formed on a plurality of identical planes of the side walls of the cylindrical portion.

By forming a plurality of inlet pipes on the same plane, the processing time and separation efficiency of the supplied liquid containing solids can be increased.

By forming the inlet pipe in two or more layers in the cylindrical part and adjusting the angle of the inlet pipe, the flow characteristics of the supplied liquid containing solids inside the hydrocyclone can be changed to improve separation efficiency.

Figure 4 is a plan view of a protrusion formed on the inner surface of a cylindrical portion according to an embodiment of the present invention.

Additionally, the inner surface of the cylindrical portion may include a plurality of protrusions 120 formed at predetermined intervals.

Liquids containing solids are separated through collision and diffusion processes inside the hydrocyclone. At this time, strong collisions of solids are continuously applied to the inner wall of the cylindrical part, which may cause problems such as wear.

Therefore, by forming a water film layer through the protrusion on the inner surface of the cylindrical part, the efficiency of collision of the solid and separation from the liquid can be increased.

The protrusion may be formed to protrude at regular intervals on the inner surface of the cylindrical portion and may be formed in a concavo-convex shape.

Figure 5 is a cross-sectional conceptual diagram of a protrusion formed on the inner surface of a cylindrical portion according to an embodiment of the present invention.

The distance between the protrusions may change as the protrusions descend from the top of the cylindrical part to the bottom. This is to match the swirling characteristics of liquid containing solids formed inside the hydrocyclone.

The protrusion may be formed to be inclined relative to the same plane of the cylindrical part. The inclined protrusion may be formed in a continuous spiral shape from the top to the bottom of the cylindrical part.

The spacing of the protrusions formed in a spiral shape may change from the top to the bottom of the cylindrical part.

The cross-sectional protrusion height of the protrusions may be formed to be constant, and the distance between the protrusions may also be formed to be constant.

The cross-sectional protrusion height of the protrusion may be sequentially increased or decreased.

The gap between the protrusions may be uniformly widened or narrowed.

Figure 6 is a perspective view and a cross-sectional view of a through hole formed in a protrusion according to an embodiment of the present invention.

In addition, the cylindrical part includes an inner tube 130 forming the inner surface; and an outer tube 140 forming the outer surface of the cylindrical part and formed at a predetermined distance from the inner tube.

A water supply pipe 150 and a water discharge pipe 160 may be formed in the outer pipe to supply water to the space between the inner pipe and the outer pipe.

A water supply port 123 and a water discharge port 124 may be formed in the inner tube to supply water to the through hole of the protrusion.

The cylindrical portion may be formed solely from an inner tube forming the inner surface. A supply unit for supplying additional liquid or gas to the through hole formed in the protrusion formed on the inner surface of the inner tube may be formed as a separate device and connected.

The fluid supplied through the through hole is supplied to distribute a constant water film layer of the protrusion formed on the inner surface of the cylindrical portion, and is adjusted so that the fluid is supplied to the through hole of the protrusion so that a uniform surface tension is formed in the through hole. You can.

A uniform water film layer of a certain height is formed by the supplied fluid, and the liquid containing the solid proceeds uniformly through the cylindrical part to a height higher than that at which the water film layer is formed, thereby increasing the separation efficiency of solid and liquid.

Additionally, a through hole 121 that supplies water to the inner surface may be formed at a predetermined position of the protrusion.

Liquid such as water or gas such as air may be supplied through the hole. Depending on the supplied fluid, it can be supplied to smoothly form a water film or to additionally increase turning strength. The gas may be supplied as one or more of air and nitrogen.

The liquid may also be supplied as pure water or a reactive liquid for reaction with a liquid containing the solid material.

Figure 7 is a cross-sectional view of a venturi nozzle combined with a lifting and lowering unit according to an embodiment of the present invention.

Additionally, a venturi nozzle 211 may be formed at the end of the solid discharge port.

A guide vane 213 may be formed at the end of the solid discharge port instead of a venturi nozzle. Solid matter containing the predetermined amount of liquid can be easily discharged through the guide vane.

The venturi nozzle may be combined with the solid discharge end of the hydrocyclone. The venturi nozzle has a first area at the top where the diameter is reduced and a second area at the bottom where the diameter is enlarged.

The solid material is discharged into the second area. The discharge angle of solids discharged by the fixed venturi nozzle may be constant.

In order to adjust the discharge angle of the solids, a lifting and lowering unit for adjusting the position of the venturi nozzle may be formed between the solids discharge port and the venturi nozzle. The raising and lowering unit can adjust the discharge angle of the solids discharged by changing the connection point of the venturi nozzle at the solids discharge port of the fixed hydrocyclone.

In addition, the position of the venturi nozzle at the end of the solid discharge port can be adjusted through a raising and lowering unit 212 formed between the end of the solid discharge port and the venturi nozzle to adjust the discharge angle of the solids.

A temperature raising/lowering unit 214 may be formed inside the battery nozzle. There is no limitation as long as the form and function of the temperature raising/lowering unit facilitate discharge of the solid and liquid. The temperature raising/lowering unit may be a heating element.

The solid discharge angle may be 1 degree to 30 degrees around the central axis of the cross section of the solid discharge port. Preferably it may be 5 degrees to 15 degrees. If the discharge angle of the solids is more than 30 degrees, normal operation is not possible, and the exit diameter of the apex is too large, so an excessive amount of fluid may be discharged along with cloudy particles at the bottom of the cone.

If the discharge angle of the solids is less than 20 degrees, the angle is too small to discharge the particles and it is too dry, and if there is excessive overflow, an excessive amount of rapeseed (liquid) may be discharged along with the particles.

In addition, the accumulator has a cylindrical tube shape in the form of an inclined double tube, and a solids inlet 410 in communication with the solids outlet is formed on a side of the cylindrical tube, and a solids outlet 420 at one end of the cylindrical tube. ); and a liquid outlet 430 at the other end of the cylindrical tube, and a pressure maintenance opening/closing unit 440 at a front end of the solids outlet and the liquid outlet; can be formed.

Additionally, the protrusions may be formed at predetermined intervals on the inner surface of the cone.

10: Descender Hydrocyclone
20: Decilter Hydrocyclone
30: centrifuge
40: membrane
50: Gas storage tank
60: Water storage tank
70: Oil storage tank
80: Solid storage tank
100: Cylindrical part
110: Inlet pipe
120: protrusion
121: Tonggong
122: Water supply port
123: Water outlet
130: inner tube
140: External view
150: Water supply pipe
160: Water discharge pipe
200: cone part
210: solids outlet
211: Venturi nozzle
212: Raising and lowering unit
213: Guide vane
214: Temperature raising/lowering unit
300: Lid
310: Bane
310: liquid discharge pipe
400: Accumulator
410: Solids inlet
420: Solids discharge port
430: Liquid outlet
440: Opening and closing unit
500: Shaker screen
600: Gas stripper

Claims (10)

A shaker screen (500) through which liquid containing solids is first introduced and coarse particles are removed;
A descender hydrocyclone (10) that supplies the liquid containing the solid material to the inlet (110) and separates it into a first solid and a first liquid;
A gas stripper (600) connected to the liquid discharge pipe (310) of the hydrocyclone to separate the gaseous material and the first liquid material from the first liquid; and
an accumulator (400) connected to the solid discharge port (210) of the hydrocyclone to separate solid material and second liquid material from the first solid; Includes,
The hydrocyclone includes an inflow pipe 110 that guides the first liquid containing the solid material; a cylindrical portion 100 that is provided at a predetermined location on the outer surface of the hydrocyclone and forms an empty space;
A conical part (200) having an upper and lower narrow structure, the upper part of which is connected to the lower part of the cylindrical part (100), and the lower part of which is provided with a solid discharge port (210);
A cylindrical liquid discharge pipe 310 with an empty interior for discharging the first liquid from which the solids have been removed to the outside; a lid 300 provided on the top of the cylindrical portion 100, which is disposed in a penetrating state; Including,
It includes a plurality of protrusions 120 formed at predetermined intervals on the inner surface of the cylindrical portion,
The cylindrical portion includes an inner tube 130 forming the inner surface; And an outer tube 140 forming the outer surface of the cylindrical part formed at a predetermined distance from the inner tube.
A solid separation system having a through hole (121) for supplying water to the inner surface at a predetermined position of the protrusion. delete According to paragraph 1,
A solid separation system further comprising a desilter hydrocyclon (20) connected to the rear end of the stripper to separate the first liquid material into a second solid and a second liquid. According to paragraph 3,
A solid separation system wherein the second liquid separated and discharged from the desilter hydrocyclone is supplied to a centrifuge (30) and finally separated into a third solid and a third liquid. According to paragraph 3,
A solid separation system in which a plurality of the desander hydrocyclones and/or the desilter hydrocyclones can be connected in series or parallel. According to paragraph 4,
A solid separation system further comprising a membrane (40) through which any one of the first liquid material, the second liquid material and the third liquid material is supplied and separated into water and oil. According to paragraph 4,
A gas storage tank (50) for storing the gaseous substances;
A water storage tank (60) storing the water;
An oil storage tank (70) storing the oil; and
A solid separation system comprising a solid storage tank (80) for storing the first solid, the second solid, and the third solid, and having a double pressure control valve formed at the inlet and outlet of the storage tank. delete delete delete