CN113307329B - Drilling platform danger area pretreatment of falling water equipment - Google Patents
Drilling platform danger area pretreatment of falling water equipment Download PDFInfo
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- CN113307329B CN113307329B CN202110618061.4A CN202110618061A CN113307329B CN 113307329 B CN113307329 B CN 113307329B CN 202110618061 A CN202110618061 A CN 202110618061A CN 113307329 B CN113307329 B CN 113307329B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Abstract
The invention provides a drilling platform dangerous area falling water pretreatment device which comprises a shell, wherein the shell is of a cylindrical structure, two ends of the shell are sealed by end plates, a feed port is arranged on an end plate on one side of the shell, the feed port is connected with a swirler arranged in the shell through a pipeline, and the feed port is communicated with a tangential inlet of the swirler; a water outlet is formed in the bottom of the end plate on the other side of the shell, a water cavity is formed in the position, close to the water outlet, inside the shell through a water cavity front weir plate, an oil cavity is formed in the position, close to the water cavity, through an oil cavity front weir plate and an oil cavity rear weir plate, and an oil discharge port communicated with the outside of the shell is formed in the bottom of the oil cavity; the device has compact structure, small occupied area and obvious treatment effect, is suitable for a drilling platform with limited space, and has wide application range to the oil content of incoming sewage through the combined design of the internal structure.
Description
Technical Field
The invention relates to the technical field of offshore platform equipment in the oil exploitation industry, in particular to a drilling platform dangerous area falling water pretreatment device.
Background
The falling water in the dangerous area of the drilling platform mainly relates to crude oil produced liquid, drilling produced liquid and other types of oily sewage, and during drilling and oil extraction, a large amount of injection water is pumped into a water injection well to maintain the pressure in an extraction system and force hydrocarbons to enter the production well, and formation water and strong brine are extracted along with oil. All of this water is typically contaminated with oils, natural low molecular weight hydrocarbons, inorganic salts, and process chemicals, is environmentally hazardous, and must be purified before being discharged into the ocean. International maritime organisation regulations stipulate that the oil content in the effluent from a drilling platform must not exceed 15ppm. Furthermore, legislation on the content of oil and suspended matter in sewage from drilling platforms in different countries and places varies. Because the produced water drilled by a drilling platform generally has the water quality characteristics of 'three high' (i.e. high salinity, high suspended matter and high oil content), the water quality after treatment for many years always does not meet the standard requirement of 15PPM oil content and related suspended matter content, and the water quality of the produced water is far away from the standard index requirement.
Based on the treatment requirements and the current treatment situation of the drowning water in the dangerous area of the drilling platform, a process device with a compact structure and modular circulation is designed according to the characteristics of small space, large influence of gas and oil overflow and the like of the drilling platform, and the treatment of the drowning water in the dangerous area is achieved through the combined circulation of the comprehensive pretreatment module, the suspended matter treatment module, the filter material oil-water treatment module, the oil-water fine treatment module, the oil-water coalescence treatment module and the oil-water analysis module. Meanwhile, the performance of pretreatment equipment in the comprehensive pretreatment module greatly influences the treatment efficiency of the whole process device and the backwashing frequency of equipment such as a filter tank and the like, and based on the reason, the invention aims to provide the device for treating the drilling platform in the dangerous area
At present, researchers in related industries aim at reducing oil and suspended matters in water singly, although the oil, suspended matters and median particle size can reach the standard. Therefore, the problems of high precision required for the water quality of the incoming water, long pretreatment process, high content of bacteria in the treated water, high content of dissolved oxygen in the water, serious scaling corrosion, vicious circulation of concentrated solution in a water treatment system, large occupied area, high treatment cost and the like are not solved.
Disclosure of Invention
Based on the purpose, the invention provides the equipment for pretreating the falling water in the dangerous area of the drilling platform, which has the advantages of compact structure, small occupied area, suitability for the drilling platform with limited space, wide application range for the oil content of the incoming sewage and obvious treatment effect by the combined design of the internal structure.
The technical scheme adopted by the invention is as follows: the pretreatment equipment for the falling water in the dangerous area of the drilling platform is characterized by comprising a shell, wherein the shell is of a cylindrical structure, two ends of the shell are sealed by end plates, a feed inlet is formed in one side end plate of the shell, the feed inlet is connected with a cyclone arranged in the shell through a pipeline, the feed inlet is communicated with a tangential inlet of the cyclone, sewage enters the cyclone in a tangential manner to form a cyclone, multiphase primary separation is realized, an oil phase, a gas phase and a small part of floccule with the relative density less than 1 are discharged from the upper part of a cyclone cylinder, and a water phase and sludge are discharged from the bottom of the cyclone cylinder; the bottom of the other side end plate of the shell is provided with a water outlet, a water cavity is formed at a position close to the water outlet in the shell through a front weir plate of the water cavity, namely the water cavity is enclosed by the front weir plate and the other side end plate, an oil cavity is formed at a position close to the water cavity through a front weir plate of the oil cavity and a rear weir plate of the oil cavity, the bottom of the oil cavity is provided with an oil discharge port communicated with the outside of the shell, the front weir plate of the oil cavity is slightly higher than the front weir plate of the water cavity, pre-separated sewage passes through the lower space of the oil cavity and flows into the water cavity after exceeding the front weir plate of the water cavity of the pretreatment equipment, pre-separated sewage and flocculated sludge with density smaller than water flow into the oil cavity due to density of the flocculated sludge smaller than sewage, the sewage flows into the oil cavity after exceeding the front weir plate of the oil cavity after accumulating certain thickness and is discharged from the oil discharge port below the oil cavity under the action of height difference to a sewage recovery tank for collection, a plurality of layers of horizontal wave plates are welded in front weir plates of the horizontal wave plates, and the horizontal wave plates of the horizontal wave plates reduce the influence of stress of the pretreatment equipment in the horizontal direction; the height of the rear weir plate of the oil cavity is far higher than that of the front weir plate of the oil cavity and the front weir plate of the water cavity, so that the effect of preventing dirty oil in the oil cavity from entering the water cavity due to overhigh liquid level in the pretreatment equipment is achieved. A plurality of baffle plates are arranged between the cyclone and the oil cavity, and the plurality of baffle plates are arranged in a left-right staggered manner, so that fluid forms a left-right baffling mode, and the separation efficiency is improved; a back-flushing pipe is arranged at the lower part of the inside of the shell and inputs clean water through a back-flushing water inlet pipe to flush and regenerate the inside of the pretreatment equipment or fill a tank before treatment; the bottom of casing still is provided with a plurality of mud outlets, the top of casing still is provided with the gas vent. The pretreatment equipment is supported and fixed through a base.
The cyclone comprises a cyclone cylinder shell, an inner cylinder of the cyclone cylinder shell is divided into an upper oil-gas separation space and a lower oil-water separation space by a horizontally arranged partition plate, the lower part of the cyclone cylinder shell is in a conical shell shape, namely the lower oil-water separation space consists of a straight cylinder section and a conical shell section, the bottom of the cyclone cylinder shell is also provided with an underflow port, the side part of the cyclone cylinder shell is positioned below the partition plate and is provided with a tangential inlet, an inner conical cylinder is arranged in the oil-water separation space, the large-diameter end of the inner conical cylinder is downwards opened, the small-diameter end of the inner conical cylinder upwards penetrates through the partition plate, a backflow cylinder is arranged in the oil-gas separation space, and the upper end of the backflow cylinder is abutted to an upper top plate and the lower end of the cyclone cylinder shell and is connected with the small-diameter end of the inner conical cylinder; the outer wall surface of the inner cone is also provided with spiral guide vanes for guiding the fluid entering the cyclone; a gap for discharging oil is formed in the side wall of the backflow cylinder, an exhaust bulge penetrating through the upper top plate is further arranged at the top of the backflow cylinder, a plurality of exhaust holes for overflowing air are formed in the wall surface of the exhaust bulge, and the exhaust bulge is integrally conical; and a plurality of side wall gaps for supplying oil to be discharged out of the cyclone are also formed in the side wall of the oil-gas separation space.
The oily and gassy sewage moves downwards in a rotational flow mode near the inner wall surface of the rotational flow cylinder shell along the guide vanes in the rotational flow cylinder shell, when the oily and gassy sewage moves to a conical space at the lower part of the rotational flow cylinder shell, because the conical space of the rotational flow cylinder shell plays a role in restricting the flow, the water phase in the oily and gassy sewage continuously flows downwards and flows out from a bottom flow port below the rotational flow cylinder, and because the density of the oil phase and the gas phase in the oily and gassy sewage is relatively small, an inner coil forms upward backflow through an inner conical cylinder at the center of the guide vanes in the rotational flow cylinder shell; the gas phase and the oil phase enter the return pipe along an inner cone at the center of a guide vane inside the cyclone, under the action of pressure and flow, the oil phase enters the oil-gas separation space along a gap on the side wall of the return pipe and flows out of the cyclone from the gap on the side wall of the oil-gas separation space, the gas phase continues to move upwards and flows out of the cyclone from an exhaust hole at an exhaust bulge at the top of the cyclone, and thus the cyclone can realize the primary separation of three phases of oil, gas and water in the oily and gas-containing sewage.
The invention has the advantages that: the device has compact structure, short processing flow and small occupied area, and is particularly suitable for working occasions with smaller space, such as drilling platforms and the like; good treatment effect, wide application range to the oil content in the sewage and wide application range of equipment and process.
Drawings
FIG. 1 is a schematic view of the overall construction of a pretreatment apparatus of the present invention;
FIG. 2 is a schematic cross-sectional view of a swirler of the present invention;
FIG. 3 is a schematic view of the overall profile of the swirler of the present invention;
1-1 part of a shell, 1-2 parts of a feeding port, 1-3 parts of a cyclone, 1-4 parts of an oil cavity, 1-5 parts of a water cavity, 1-6 parts of a baffle plate, 1-7 parts of a water outlet, 1-8 parts of an oil outlet, 1-9 parts of a back flushing pipe, 1-10 parts of a back flushing water inlet pipe, 1-11 parts of a back flushing water inlet pipe, 1-12 parts of a sludge outlet, 1-13 parts of a base, an end plate, 1-14 parts of a horizontal wave-proof plate;
2-1 parts of a cyclone cylinder shell, 2-2 parts of a partition plate, 2-3 parts of a tangential inlet, 2-4 parts of a bottom flow port, 2-5 parts of an inner cone cylinder, 2-6 parts of a guide vane, 2-7 parts of a reflux cylinder, 2-8 parts of an exhaust protrusion, 2-9 parts of a side wall gap, 2-10 parts of an exhaust hole.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the disclosure herein.
Referring to the drawings, the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present disclosure can be implemented, so that the present disclosure has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the disclosure of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. Meanwhile, the positional limitation terms used in the present specification are for clarity of description, and are not intended to limit the implementable scope of the present invention, and the changes or adjustments of the relative relationship thereof may be regarded as the implementable scope of the present invention without substantial technical changes.
FIG. 1 is a schematic diagram of the overall structure of the pretreatment equipment, and as shown in the figure, the pretreatment equipment of the invention is a horizontal structure and comprises a shell 1-1, wherein the shell 1-1 is a cylindrical structure, two ends of the shell are closed by end plates 1-13, a feed inlet 1-2 is arranged on an end plate at one side of the shell 1-1, the feed inlet 1-2 is connected with a cyclone 1-3 arranged inside the shell 1-1 through a pipeline, the feed inlet 1-2 is communicated with a tangential inlet of the cyclone 1-3, sewage enters the cyclone 1-3 in a tangential manner to form a rotational flow, multiphase primary separation is realized, an oil phase, a gas phase and a small part of floccule with relative density less than 1 are discharged from the upper part of a rotational flow cylinder 1-3, and a water phase and sludge are discharged from the bottom part of the rotational flow cylinder 1-3; the bottom of the other side end plate of the shell 1-1 is provided with a water outlet 1-7, a position, close to the water outlet 1-7, inside the shell 1-1 is provided with a water cavity 1-5 through a water cavity front weir plate, namely the water cavity 1-5 is enclosed by the front weir plate and the other side end plate, a position, close to the water cavity 1-5, is provided with an oil cavity 1-4 through an oil cavity front weir plate and an oil cavity rear weir plate, the bottom of the oil cavity 1-4 is provided with an oil discharge port 1-8 communicated with the outside of the shell 1-1, the oil cavity front weir plate is slightly higher than the water cavity front weir plate, pre-separated sewage passes through a space at the lower part of the oil cavity and flows into the water cavity after exceeding the pre-treatment equipment water cavity front weir plate, pre-separated sewage and flocculated sludge with density smaller than water are lower than the sewage due to density, the oil cavity height exceeds the front weir plate after accumulating with certain thickness to enter the oil cavity, and is discharged from the oil discharge port 1-8 under the oil cavity under the action of a height difference to a sewage recovery tank for collection, the front weir plate is provided with a plurality of layers of horizontal wave-14, and the horizontal wave-preventing plates, and the horizontal stress on the pre-treatment equipment is reduced in the horizontal direction; the height of the rear oil cavity weir plate of the oil cavity 1-4 is far higher than that of the front oil cavity weir plate of the oil cavity 1-4 and that of the front water cavity weir plate of the water cavity 1-5, so that the effect of preventing sump oil in the oil cavity from entering the water cavity due to overhigh liquid level in the pretreatment equipment is achieved. A plurality of baffle plates 1-6 are arranged between the cyclone 1-3 and the oil cavity 1-4, and the plurality of baffle plates 1-6 are staggered left and right, so that fluid is baffled left and right to improve the separation efficiency; a back flushing pipe 1-9 is arranged at the lower part of the interior of the shell 1-1, and the back flushing pipe 1-9 inputs clean water through a back flushing water inlet pipe 1-10 to flush and regenerate the interior of the pretreatment equipment or fill a tank before treatment; the bottom of the shell 1-1 is also provided with a plurality of sludge discharge ports 1-11, and the top of the shell 1-1 is also provided with an exhaust port. The pretreatment equipment is supported and fixed through bases 1-12.
FIG. 2 is a schematic sectional structure diagram of a cyclone of the present invention, FIG. 3 is a schematic overall outline structure diagram of the cyclone of the present invention, as shown in the figure, the cyclone 1-3 includes a cyclone cylinder housing 2-1, the inner cylinder of the cyclone cylinder housing 2-1 is divided into an upper oil-gas separation space and a lower oil-water separation space by a horizontally arranged partition 2-2, the lower part of the cyclone cylinder housing 2-1 is cone-shaped, i.e. the lower oil-water separation space is composed of a straight cylinder section and a cone shell section, the bottom of the cyclone cylinder housing 2-1 is further provided with a bottom flow port 2-4, the side of the cyclone cylinder housing 2-1 is provided with a tangential inlet 2-3 below the partition 2-2, the oil-water separation space is provided with an inner cone 2-5, the large diameter end of the inner cone 2-5 opens downward, the small diameter end of the inner cone passes through the partition 2-2 upward, the oil-gas separation space is provided with a return cylinder 2-7, the upper end of the return cylinder 2-7 abuts against the upper top plate of the cyclone cylinder housing 2-1, and the lower end of the return cylinder is connected with the small diameter end of the cyclone cylinder 2-5; the outer wall surface of the inner cone 2-5 is also provided with spiral guide vanes 2-6 to guide the fluid entering the cyclone 1-3; a gap for discharging oil is formed in the side wall of the backflow cylinder 2-7, an exhaust bulge 2-8 penetrating through the upper top plate is further arranged at the top of the backflow cylinder 2-7, a plurality of exhaust holes 2-10 for gas to overflow are formed in the wall surface of the exhaust bulge 2-8, and the exhaust bulge 2-8 is integrally conical; the side wall of the oil-gas separation space is also provided with a plurality of side wall gaps 2-9 for discharging the oil-supply phase cyclone 1-3.
The oily and gassy sewage moves downwards in a rotational flow mode near the inner wall surface of the rotational flow cylinder shell 2-1 along the guide vanes 2-6 in the cyclone 1-3, when the movement moves to a conical space at the lower part of the rotational flow cylinder shell 2-1, because the conical space of the rotational flow cylinder shell 2-1 plays a role in restricting the flow, a water phase in the oily and gassy sewage continuously flows downwards and flows out from a bottom flow port 2-4 below the cyclone 1-3, and because the density of an oil phase and a gas phase in the oily and gassy sewage is relatively low, an inner roll forms upward backflow through an inner cone 2-5 at the center of the guide vanes in the cyclone 1-3; gas phase and oil phase enter a return pipe 2-7 along an inner cone 2-5 at the center of a guide vane inside the cyclone, under the action of pressure and flow, the oil phase enters an oil-gas separation space along a gap on the side wall of the return pipe 2-7 and flows out of the cyclone from a gap 2-9 on the side wall of the oil-gas separation space, the gas phase continues to move upwards and flows out of the cyclone 1-3 from an exhaust hole 2-10 at an exhaust bulge 2-8 at the top of the cyclone, and thus the cyclone can realize the primary separation of three phases of oil, gas and water in the oily gas-containing sewage.
In a specific design process, the basic structural parameters of the cyclones 1-3 are shown in the following table:
TABLE 1 cyclone basic structural parameters
Wherein L1 is the width of tangential entry, L2 is the height of tangential entry, L3 is the distance between lower terminal surface of tangential entry and the upper end surface of the conical shell shape part of swirl tube housing, D0 is the inner diameter of swirl tube housing, D1 is the inner diameter of underflow opening, D2 is the inner diameter of backflow tube, D3 is the inner diameter of the large diameter end of inner conical tube, D4 is the diameter of exhaust protrusion, H0 is the distance between partition plate and the upper end surface of the conical shell shape part of swirl tube housing, H1 is the height of the conical shell shape part, H2 is the extension length of underflow opening, H3 is the height of inner conical tube, H4 is the height of the short straight section of the upper part of inner conical tube, H5 is the distance between the upper top plate of swirl tube housing and partition plate, H6 is the height of exhaust protrusion, C1 is the half cone angle of the conical shell shape part.
The internal guide vanes 2-6 of the swirler 1-3 are structurally characterized in that: the inner guide vanes 2-6 of the cyclone adopt uniform-pitch reducing spiral lines, the wrap angle is 8 pi, the pitch is 75-205 mm (not exceeding one fourth of the corresponding handling capacity equipment structure parameter L3), the thickness of the inner guide vanes 2-6 is 5-12 mm, the outer diameter of the spiral lines of the inner guide vanes 2-6 is always equal to the inner diameter D0 of the cyclone shell 2-1, and the inner diameter of the spiral lines of the inner guide vanes 2-6 changes along with the angle of the spiral lines and is attached to the outer wall surface of the inner cone.
Wherein the calculation formula of the external spiral line of the internal guide vane 2-6 is as follows:
the calculation formula of the inner spiral line of the inner guide vane 2-6 is as follows:
the cyclone comprises a cyclone body, a bottom flow port, an inlet height plane, an origin point, a bottom flow port, an inlet inflow direction, an outlet flow port, a bottom flow port, an inlet flow port, an outlet flow port and a bottom flow port, wherein the axis of the cyclone body is the z axis; and x, y and z are numerical values corresponding to the x axis, the y axis and the z axis of the coordinate system.
The pretreatment equipment has wide application range by matching the components such as the internal cyclone, the oil cavity, the water cavity and the like, wherein the index of the oil content of the incoming wastewater can be widened to 250000PPM, and the effluent index can completely reach the sewage drainage standard of the International maritime organization under the condition that the index of the suspended matter content of the incoming wastewater can be widened to 80000 PPM: the main indexes of the method reach the standard in grades as follows: the effluent of the sewage treated by the pretreatment equipment can reach the solid suspended matter less than or equal to 100PPM and the oil content less than or equal to 1500PPM; the effluent of the sewage treated by the subsequent sludge tank and the two-stage multi-medium filter tank can reach the solid suspended matter less than or equal to 20PPM and the oil content less than or equal to 400PPM; the effluent of the sewage treated by the complete sewage treatment process can reach the condition that the solid suspended matter is less than or equal to 5PPM and the oil content is less than or equal to 10PPM, and the standard that the oil content in the sea of the sewage discharged by the international maritime organization is not more than 15PPM is reached.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and changes in equivalent structure or equivalent flow, or direct or indirect application to other related fields without creative efforts based on the technical solutions of the present invention may be made within the scope of the present invention.
Claims (8)
1. The pretreatment equipment for the falling water in the dangerous area of the drilling platform is characterized by comprising a shell, wherein the shell is of a cylindrical structure, two ends of the shell are sealed by end plates, a feed port is arranged on an end plate on one side of the shell, the feed port is connected with a cyclone installed in the shell through a pipeline, and the feed port is communicated with a tangential inlet of the cyclone; the bottom of the end plate on the other side of the shell is provided with a water outlet, a water cavity is formed at a position close to the water outlet in the shell through a water cavity front weir plate, an oil cavity is formed at a position close to the water cavity through an oil cavity front weir plate and an oil cavity rear weir plate, the bottom of the oil cavity is provided with an oil discharge port communicated with the outside of the shell, and the oil cavity front weir plate is slightly higher than the water cavity front weir plate; the height of the oil cavity rear weir plate of the oil cavity is far higher than that of the oil cavity front weir plate of the oil cavity and that of the water cavity front weir plate of the water cavity;
the cyclone comprises a cyclone shell, an inner cylinder of the cyclone shell is divided into an upper oil-gas separation space and a lower oil-water separation space by a horizontally arranged partition plate, the lower part of the cyclone shell is in a conical shell shape, the bottom of the cyclone shell is also provided with a bottom flow port, a tangential inlet is arranged at the side part of the cyclone shell below the partition plate, an inner conical cylinder is arranged in the oil-water separation space, the large-diameter end of the inner conical cylinder is downwards opened, the small-diameter end of the inner conical cylinder upwards passes through the partition plate, a backflow cylinder is arranged in the oil-gas separation space, the upper end of the backflow cylinder is abutted against an upper top plate of the cyclone shell, and the lower end of the backflow cylinder is connected with the small-diameter end of the inner conical cylinder; the outer wall surface of the inner cone is also provided with spiral guide vanes for guiding the fluid entering the cyclone; a gap for discharging oil is formed in the side wall of the backflow cylinder, an exhaust bulge penetrating through the upper top plate is further arranged at the top of the backflow cylinder, and a plurality of exhaust holes for gas to overflow are formed in the wall surface of the exhaust bulge; and a plurality of side wall gaps for supplying oil to be discharged out of the cyclone are also formed in the side wall of the oil-gas separation space.
2. The pretreatment equipment of claim 1, wherein a plurality of baffles are arranged between the cyclone and the oil chamber, and the plurality of baffles are staggered left and right, so that the fluid is baffled left and right; a back washing pipe is arranged at the lower part of the inside of the shell, and the back washing pipe inputs clean water through a back washing water inlet pipe to wash and regenerate the inside of the pretreatment equipment or fill a tank before treatment; the bottom of casing still is provided with a plurality of mud outlets, the top of casing still is provided with the gas vent.
3. The pretreatment apparatus of claim 2, further characterized in that the pretreatment apparatus is secured by a pedestal support.
4. The pretreatment apparatus of claim 1, further characterized in that a plurality of layers of horizontal swash plates are welded in front of the oil chamber front weir plate.
5. The pretreatment apparatus of claim 1, further characterized in that the exhaust projections are generally conical.
6. The pretreatment apparatus of claim 5, further characterized in that the guide vanes are of a constant pitch reducing helix, the wrap angle is 8 pi, and the pitch is less than one quarter of the distance between the lower end surface of the tangential inlet and the upper end surface of the conical shell shaped portion of the cyclone barrel housing.
7. The pretreatment apparatus of claim 6, wherein the guide vanes have a helical outer diameter that is always equal to the inner diameter of the cyclone casing, and the guide vanes have a helical inner diameter that varies with the angle of the helical portion and that is attached to the outer wall of the inner cone.
8. The pretreatment apparatus according to claim 7, wherein an outer spiral line of the cyclone inner guide vanes is calculated by the formula:
the calculation formula of the inner spiral line of the guide vane inside the cyclone is as follows:
the cyclone comprises a cyclone body, a bottom flow port, an inlet height plane, an origin point, a bottom flow port, an inlet inflow direction, an outlet flow port, a bottom flow port, an inlet flow port, an outlet flow port and a bottom flow port, wherein the axis of the cyclone body is the z axis; d 0 Is the inner diameter of the shell of the cyclone cylinder H 3 Is the height of the inner cone, D 3 Is the inner diameter of the large-diameter end of the inner cone cylinder D 2 The values of x, y and z are respectively corresponding to the x axis, the y axis and the z axis.
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| CN101664720A (en) * | 2009-09-21 | 2010-03-10 | 宁波威瑞泰默赛多相流仪器设备有限公司 | Spiral-flow type gas, oil and water separator |
| CN104822461A (en) * | 2012-08-08 | 2015-08-05 | 先进技术和创新公司 | Apparatus for cyclone separation of a fluid flow into a gas phase and a liquid phase and vessel provided with such an apparatus |
| CN204529759U (en) * | 2015-04-16 | 2015-08-05 | 王超 | A kind of efficient ultrasonic crude oil demulsification device |
| CN105688449A (en) * | 2016-03-05 | 2016-06-22 | 东北石油大学 | Inner cone type variable cross-section spiral oil-water separator |
| CN106964502A (en) * | 2017-03-26 | 2017-07-21 | 东北石油大学 | A kind of three-phase cyclone separator with helical structure |
| CN111908648A (en) * | 2020-09-11 | 2020-11-10 | 浙江海牛海洋工程有限公司 | Combined type rapid oil-water separation device |
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