CN113117906A - Electrostatic cyclone composite separation device for shale hammer mill drilling cuttings dust - Google Patents
Electrostatic cyclone composite separation device for shale hammer mill drilling cuttings dust Download PDFInfo
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- CN113117906A CN113117906A CN202110432121.3A CN202110432121A CN113117906A CN 113117906 A CN113117906 A CN 113117906A CN 202110432121 A CN202110432121 A CN 202110432121A CN 113117906 A CN113117906 A CN 113117906A
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- outlet pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
- B04C5/04—Tangential inlets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/081—Shapes or dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/22—Apparatus in which the axial direction of the vortex is reversed with cleaning means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
- B04C2009/001—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with means for electrostatic separation
Abstract
The invention discloses an electrostatic cyclone composite separation device for shale hammer mill drilling cuttings dust, which mainly comprises an air outlet pipe, an air inlet pipe, a cylindrical section and a conical section; the air outlet pipe consists of an outer layer air outlet pipe, an inner layer positive electrode air outlet pipe, an inverted cone and a cylindrical flow guide body; the air inlet pipe consists of a rectangular air inlet pipe and a volute type air inlet pipe; the cylindrical section consists of a gas cathode flow guide body and a cylinder body; the cone section consists of an outer-layer cone body, a vibration spring and an inner-layer anode cone body; the outlet duct passes from the cylinder section center, and the intake pipe is rectangular cross-section and tangential welding in the cylinder section outside, and the cylinder section welding is in the cone section upper end. The cyclone dust collector has the advantages of simple structure and ingenious design, and can perform multiple separation under the combined action of electrostatic dust collection and cyclone dust collection, reduce secondary flow in the cyclone separator, and improve the separation efficiency of the cyclone separator, particularly the separation efficiency of particles with the particle size of less than 10 microns.
Description
Technical Field
The invention relates to an electrostatic cyclone composite separation device for shale hammer mill drill chip dust, which is used for the field of dust removal such as drill chip separation in oil-water mixed steam.
Background
Shale gas is unconventional natural gas clean energy, effective exploitation of shale gas is beneficial to relieving the current situation of energy shortage in China, oil-based drilling fluid is frequently used in exploitation of shale gas, and drilling cuttings generated in the drilling process are mixed with substances such as white oil and the like. At present, oil-containing drill cuttings are mostly processed on site through a hammer mill thermal desorption technology to recover white oil, the oil content of the processed oil-containing drill cuttings is lower than 1%, and the national emission standard is met, but the processed white oil is low in recovery efficiency, the purity of the recovered white oil is low, and the recovery cost is high.
After the oil-containing drill cuttings are treated by the hammer mill, the oil-water mixed steam which is discharged from the exhaust port and has the temperature of 300 ℃ and the pressure of not more than 80KPa carries tiny drill cuttings particles, and the particle size distribution is about 1 micron to 85 microns. The cyclone separator has the advantages of high separation efficiency, wide application range and the like, so that a cyclone separator separation method or a separation method of connecting a plurality of cyclone separators in series and in parallel is mostly used for separating oil-water vapor containing drill chip micro particles at present, but the two methods have high cost, large occupied space and complex structure, have low separation efficiency on drill chip particles with the particle size of less than 10 microns, are easy to cause pipeline blockage in a hammer mill thermal analysis post-treatment device, can also cause drill chip impurities in recovered oil liquid, and reduce the purity of recovered oil, so that the separation efficiency on the drill chip particles, particularly the separation efficiency on the small particles, needs to be improved.
In order to improve the separation efficiency of the separation device on drill cutting particles, particularly improve the separation efficiency on the drill cutting particles with the particle size of less than 10 microns, improve the purity of recovered white oil, avoid pipeline blockage, reduce the separation steps, the occupied area and the cost, the electrostatic cyclone composite separation device for shale hammer mill drill cutting dust is provided, and the electrostatic separation and the cyclone separation are utilized to carry out multiple times of separation, so that the separation efficiency on small particles is improved, and the drill cutting particles in oil-water mixed steam are basically removed.
Disclosure of Invention
The invention aims to improve the separation efficiency of a cyclone separation device on drill cutting particles with the particle size of below 10 micrometers, and provides an electrostatic cyclone composite separation device for shale hammer-milled drill cutting dust.
The technical scheme adopted by the invention is as follows:
an electrostatic cyclone composite separation device for shale hammer-milled drilling dust mainly comprises an air outlet pipe, an air inlet pipe, a cylindrical section and a conical section; the air outlet pipe consists of an outer layer air outlet pipe, an inner layer positive electrode air outlet pipe, an inverted cone and a cylindrical flow guide body; the air inlet pipe consists of a rectangular air inlet pipe and a volute type air inlet pipe; the cylindrical section consists of a gas cathode flow guide body and a cylinder body; the cone section consists of an outer-layer cone body, a vibration spring and an inner-layer anode cone body; the air outlet pipe penetrates through the center of the cylindrical section, the air inlet pipe is of a rectangular cross section and is tangentially welded on the outer side of the cylindrical section, and the cylindrical section is welded at the upper end of the cone section; the gas outlet pipe is in interference fit with the gas cathode flow guide body, the gas cathode flow guide body is connected with the cylinder body through a bolt, the inner-layer anode conical body and the outer-layer conical body are welded at the lower end of the cylinder body, and the rectangular gas inlet pipe is welded and connected with the volute type gas inlet pipe; the inner-layer positive-pole conical body and the outer-layer conical body are in clearance fit, one end of a vibration spring penetrates through the outer-layer conical body and is connected with the inner-layer positive-pole conical body in a welding mode, the vibration springs are uniformly distributed outside the conical body section, the number of the vibration springs is four to twenty-four, and the other end of each vibration spring is connected to a vibrator; the inner-layer anode air outlet pipe is in interference fit with the outer-layer anode air outlet pipe, a circular through hole is formed in the side face of the cylindrical flow guide body, the upper portion of the cylindrical flow guide body is connected with the inverted cone in a welding mode, the conical included angle of the inverted cone is 20-60 degrees, and the upper end of the inverted cone is in interference fit with the inner-layer anode air outlet pipe and the outer-layer air outlet pipe.
The gas negative electrode flow guide body is a symmetrical section with an arc, the surface of the arc is a corona negative plate, the arc starts from the upper end of the cylindrical body, the arc ends from the side surface of the outer layer air outlet pipe, and the arc is concave to the inside of the cylindrical body.
The inner surface of the inner layer positive electrode conical body is a positive plate, and the conical included angle of the conical body is 20-60 degrees.
The inner surface of the inner-layer anode air outlet pipe is a positive plate, the lower ends of the inner-layer anode air outlet pipe and the outer-layer air outlet pipe are triangular, the air outlet pipe extends upwards to 0-0.3m of the cylindrical body, and the air outlet pipe extends downwards to 0-0.5m of the cylindrical body. .
Compared with the prior art, the invention has the following advantages:
the electrostatic cyclone composite separation device combines the principles of electrostatic separation and cyclone separation, and has the advantages of multiple separation, high separation efficiency, simple structure and low cost; the gas cathode flow guide body has the functions of flow guide and particle electrification, and the longitudinal circulation at the top of the cylinder body is reduced; the inverted cone-shaped air outlet pipe reduces the short-circuit flow and the local eddy in the outer eddy, and reduces the number of fine particles overflowing from the air outlet pipe and the back mixing of the particles caused by the local eddy; the inner-layer positive electrode conical body has the functions of adsorbing negatively charged particles and separating the negatively charged particles by cyclone, and the vibration device enables the particles to fall from the surface of the inner-layer positive electrode conical body, so that the dust removal efficiency of the dust removal device is improved; the inverted cone-shaped air outlet pipe is an inverted miniature cyclone separator and has the function of cyclone separation; the air outlet pipe of the inner anode adsorbs negatively charged particles. Therefore, the electrostatic cyclone composite separation device for shale hammer-milled drill chip dust performs three times of separation, secondary flow is reduced, particles in gas are separated, and the separation efficiency of the cyclone separator is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic top view of the present invention;
fig. 3 is a three-dimensional schematic of a gaseous negative current carrier;
in the figure: 1. the vibration type gas generator comprises a gas outlet pipe, a gas inlet pipe, a cylindrical section, a conical section, an outer-layer conical body, a vibrating spring, an inner-layer anode gas outlet pipe, an outer-layer gas outlet pipe, a gas cathode flow guide body, a cylinder body, a cone body, an inverted cone body, a conical body, an inner-layer anode conical body, a cylindrical flow guide body, a rectangular gas inlet pipe, a volute type gas inlet pipe, a circular arc shape and a vibrator, wherein the outlet pipe is 2, the gas inlet pipe is 3, the cylindrical section is 4.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, 2 and 3, the invention relates to an electrostatic cyclone composite separation device for shale hammer mill drilling dust, which mainly comprises an air outlet pipe 1, an air inlet pipe 2, a cylindrical section 3 and a cone section 4; the air outlet pipe 1 consists of an outer layer air outlet pipe 7, an inner layer anode air outlet pipe 8, an inverted cone 11 and a cylindrical flow guide body 13; the air inlet pipe 2 is composed of a rectangular air inlet pipe 14 and a volute type air inlet pipe 15; the cylindrical section 3 consists of a gas cathode flow guide body 9 and a cylinder body 10; the cone section 4 consists of an outer-layer cone body 5, a vibrating spring 6 and an inner-layer anode cone body 12; the air outlet pipe 1 penetrates through the center of the cylindrical section 3, the air inlet pipe 2 is of a rectangular cross section and is tangentially welded on the outer side of the cylindrical section 3, and the cylindrical section 3 is welded at the upper end of the cone section 4; the gas outlet pipe 1 is in interference fit with the gas cathode flow guide body 9, the gas cathode flow guide body 9 is in bolt connection with the cylinder 10, the inner-layer anode conical body 12 and the outer-layer conical body 5 are welded at the lower end of the cylinder 10, and the rectangular gas inlet pipe 14 is connected with the volute type gas inlet pipe 15 in a welding manner; the inner-layer positive-pole conical body 12 is in clearance fit with the outer-layer conical body 5, one end of the vibration spring 6 penetrates through the outer-layer conical body 5 and is connected with the inner-layer positive-pole conical body 12 in a welding mode, the vibration spring 6 is uniformly distributed outside the conical body section 4, the number of the vibration spring 6 is four to twenty-four, and the other end of the vibration spring 6 is connected to the vibrator 17; anodal outlet duct 8 of inlayer and 7 interference fit of outer outlet duct, open the side of cylinder baffle 13 has circular through-hole, and cylinder baffle 13 upper portion links to each other with back taper body 11 welding, and the toper contained angle of back taper body 11 is 20 to 60, and back taper body 11 upper end and anodal outlet duct 8 of inlayer and 7 interference fit of outer outlet duct.
As shown in fig. 1 and 3, the gas negative current conductor 9 has a symmetrical cross section with an arc 16, the surface of the arc 16 is a corona negative plate, the arc 16 starts from the upper end of the cylindrical body 10, the arc 16 ends from the side surface of the outer outlet pipe 7, and the arc 16 is concave inside the cylindrical body 10.
As shown in fig. 1, the inner surface of the inner layer positive electrode cone 12 is a positive plate, and the included angle of the cone is 20-60 °.
As shown in fig. 1, the inner surface of the inner layer anode outlet pipe 8 is a positive plate, the lower ends of the inner layer anode outlet pipe 8 and the outer layer outlet pipe 7 are triangular, the outlet pipe 1 extends upwards from the cylindrical body 5 by 0-0.3m, and extends downwards from the cylindrical body 5 by 0-0.5 m.
When the electrostatic cyclone composite separation device for shale hammer mill drilling dust works, high-temperature oil-water mixed steam containing drilling cuttings enters the cylindrical section 3 of the cyclone dust removal device through the air inlet pipe 2 at a certain speed, particles staying at the top of the cylinder 10 are reduced under the guiding action of the gas negative flow guide body 9 and the cylinder 10 and the ionization action of the corona negative plate, the particles have negative charges, and the gas rotates along the wall surface of the cylinder 10 and has a certain downward speed, so that the number of particles participating in separation is increased, and the separation efficiency is improved; gas and particles enter the cone section 4, the particles with negative charges are adsorbed by the inner-layer anode cone 12, the particles without negative charges move downwards along the wall surface, the inner-layer anode cone 12 is connected with the external vibrating spring 6, and the particles on the inner-memory anode cone 12 fall down through vibration so as to be separated from the gas; the gas reduces short-circuit flow at the lower end of the gas outlet pipe 1 and local eddy and eccentric circulation near the wall surface of the inner-layer anode conical body 12 under the action of the cylindrical flow guide body 13, so that the number of back mixing of particles is reduced, and the gas is separated for the second time through the inverted cone 11, so that the separation efficiency of the cyclone separator is improved; gas and particles are introduced into the inner-layer anode gas outlet pipe 8 and the outer-layer gas outlet pipe 7 to be separated for the third time, and the negatively charged particles are adsorbed on the inner-layer anode gas outlet pipe 8, so that small particles in purified gas are greatly reduced, and the separation efficiency of the cyclone separator is improved.
Claims (4)
1. An electrostatic cyclone composite separation device for shale hammer mill drilling dust is characterized by mainly comprising an air outlet pipe (1), an air inlet pipe (2), a cylindrical section (3) and a cone section (4); the air outlet pipe (1) consists of an outer air outlet pipe (7), an inner anode air outlet pipe (8), an inverted cone (11) and a cylindrical flow guide body (13); the air inlet pipe (2) is composed of a rectangular air inlet pipe (14) and a volute type air inlet pipe (15); the cylindrical section (3) consists of a gas cathode flow guide body (9) and a cylinder body (10); the cone section (4) is composed of an outer-layer cone body (5), a vibration spring (6) and an inner-layer anode cone body (12); the air outlet pipe (1) penetrates through the center of the cylindrical section (3), the air inlet pipe (2) is of a rectangular cross section and is tangentially welded on the outer side of the cylindrical section (3), and the cylindrical section (3) is welded at the upper end of the cone section (4); the air outlet pipe (1) is in interference fit with the gas cathode flow guide body (9), the gas cathode flow guide body (9) is in bolt connection with the cylinder body (10), the inner-layer anode conical body (12) and the outer-layer conical body (5) are welded at the lower end of the cylinder body (10), and the rectangular air inlet pipe (14) is connected with the volute type air inlet pipe (15) in a welding manner; the inner-layer positive-pole conical body (12) is in clearance fit with the outer-layer conical body (5), one end of a vibration spring (6) penetrates through the outer-layer conical body (5) to be connected with the inner-layer positive-pole conical body (12) in a welding mode, the vibration spring (6) is uniformly distributed outside the conical body section (4), the number of the vibration spring is four to twenty-four, and the other end of the vibration spring (6) is connected to a vibrator (17); the inner-layer anode air outlet pipe (8) is in interference fit with the outer-layer air outlet pipe (7), a circular through hole is formed in the side face of the cylindrical flow guide body (13), the upper portion of the cylindrical flow guide body (13) is connected with the inverted cone (11) in a welding mode, the conical included angle of the inverted cone (11) is 20-60 degrees, and the upper end of the inverted cone (11) is in interference fit with the inner-layer anode air outlet pipe (8) and the outer-layer air outlet pipe (7).
2. The electrostatic cyclone composite separation device for the shale hammer mill drill cutting dust is characterized in that the gas negative electrode flow guide body (9) is a symmetrical section with an arc (16), the surface of the arc (16) is a corona negative plate, the arc (16) starts from the upper end of the cylindrical body (10), the arc (16) ends from the side surface of the outer layer air outlet pipe (7), and the arc (16) is concave to the inside of the cylindrical body (10).
3. The electrostatic cyclone composite separation device for shale hammer mill drilling dust is characterized in that the inner surface of the inner layer positive electrode conical body (12) is a positive plate, and the included angle of the conical body is 20-60 degrees.
4. The electrostatic cyclone composite separation device for shale hammer-milled drill cuttings dust according to claim 1, wherein the inner surface of the inner positive outlet pipe (8) is a positive plate, the lower ends of the inner positive outlet pipe (8) and the outer positive outlet pipe (7) are triangular, the outlet pipe (1) extends upwards from the cylindrical body (5) by 0-0.3m, and the outlet pipe extends downwards from the cylindrical body (5) by 0-0.5 m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432121.3A CN113117906B (en) | 2021-04-21 | 2021-04-21 | Electrostatic cyclone composite separation device for shale hammer mill drilling cuttings dust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432121.3A CN113117906B (en) | 2021-04-21 | 2021-04-21 | Electrostatic cyclone composite separation device for shale hammer mill drilling cuttings dust |
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| CN113117906A true CN113117906A (en) | 2021-07-16 |
| CN113117906B CN113117906B (en) | 2022-01-04 |
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| CN206168589U (en) * | 2016-10-26 | 2017-05-17 | 江苏道宁药业有限公司 | Whirlwind formula gas -solid separator |
| CN109277213A (en) * | 2017-07-22 | 2019-01-29 | 青岛理工大学 | Electrostatic cyclone |
| CN108253501A (en) * | 2017-09-22 | 2018-07-06 | 徐志强 | A kind of wind screen electrostatic range hood free of cleaning |
| CN108480069A (en) * | 2018-03-28 | 2018-09-04 | 王芳 | A kind of cyclone cylinder electrical dust collector device |
| KR102094907B1 (en) * | 2018-10-31 | 2020-03-30 | 주식회사 에스엠아이 | Cycline filter unit |
| CN210441362U (en) * | 2019-07-25 | 2020-05-01 | 江西亚联净化工程有限公司 | Air source disinfecting and purifying equipment for central air conditioner |
| CN210646871U (en) * | 2019-10-17 | 2020-06-02 | 西南石油大学 | Novel guide vane type cyclone separator cyclone with separation pipe |
| CN211838483U (en) * | 2020-01-19 | 2020-11-03 | 刘根凡 | Auxiliary flow guiding device in electrostatic cyclone dust collector |
| CN211864395U (en) * | 2020-01-22 | 2020-11-06 | 福建中盟环保科技有限公司 | Dust and waste gas treatment device |
| CN111318370A (en) * | 2020-04-07 | 2020-06-23 | 浙江天地环保科技有限公司 | Cyclone electrostatic coupling wet dust collector |
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