CN110292810B - Integrated supergravity separation device - Google Patents
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- CN110292810B CN110292810B CN201910735239.6A CN201910735239A CN110292810B CN 110292810 B CN110292810 B CN 110292810B CN 201910735239 A CN201910735239 A CN 201910735239A CN 110292810 B CN110292810 B CN 110292810B
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- 238000000926 separation method Methods 0.000 title claims abstract description 66
- 238000012856 packing Methods 0.000 claims abstract description 331
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 49
- 230000001154 acute effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 37
- 230000000694 effects Effects 0.000 abstract description 20
- 239000012535 impurity Substances 0.000 abstract description 9
- 230000003749 cleanliness Effects 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 239000002245 particle Substances 0.000 description 23
- 239000007787 solid Substances 0.000 description 14
- 230000008859 change Effects 0.000 description 8
- 238000009826 distribution Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000004323 axial length Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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Abstract
The invention discloses an integrated supergravity separation device, which comprises a shell provided with an air inlet and an air outlet; a counter-current rotary packing layer and a cross-current rotary packing layer rotatably arranged in the shell; the air inlet is communicated to the circumferential peripheral area of the countercurrent rotary packing layer, the axial central gas phase outlet end of the countercurrent rotary packing layer is communicated to the axial inlet end of the cross-flow rotary packing layer, and the axial gas phase outlet end of the cross-flow rotary packing layer is communicated with the air outlet. The integrated supergravity separation device integrates the traditional countercurrent rotary packed bed and the cross-flow rotary packed bed into a whole, has compact structure and small occupied space, ensures that dust-containing gas is subjected to two-stage supergravity separation treatment, has good homogeneous mixing capability and large through flow, reduces the resistance of the countercurrent rotary packed layer under the same unit through flow, improves the flood point, effectively separates and removes impurity dust in the gas, has high dust removal efficiency and good effect, and improves the cleanliness of the treated gas.
Description
Technical Field
The invention relates to the technical field of gas-solid separation, in particular to an integrated supergravity separation device.
Background
The hypergravity separation technology is to strengthen the relative speed and mutual contact between phases by using hypergravity condition and to realize high-efficiency multiphase reaction and separation by using centrifugal force to strengthen transfer and micromixing. The super-gravity rotating packed bed is characterized in that the centrifugal force generated by the high-speed rotation of the packing layer driven by the inner rotor cuts liquid into smaller micro-elements, so that the mass transfer efficiency is greatly enhanced, the micro-elements of the liquid are quickly solidified and dispersed in the gaps of the rotating packing layer, the infiltration of dust is facilitated, the extremely strong capturing capability is formed for the dust in gas, when the dust-containing gas is rotated at high speed and fills the gaps in the packing layer of the liquid micro-elements, the inertial settling capability of the dust is enhanced, and the dust, the liquid and the packing form quick collision contact, so that the gas-solid separation process is realized, the super-gravity rotating packed bed can save energy consumption to a great extent, and the equipment investment is reduced.
The existing supergravity rotating packed bed mainly comprises a countercurrent rotating packed bed, a cross-flow rotating packed bed and the like, wherein the countercurrent rotating packed bed has good gas-liquid homogeneous mixing capability, small unit flux, large pressure drop and low flood point, a condition that liquid is carried out by a large amount of gas easily occurs, the separation treatment power consumption is large, the cross-flow rotating packed bed has low pressure drop and high flood point, the homogeneous mixing capability is weak, the inertial collision effect is small, and the separation efficiency is low. The existing supergravity rotating packed bed is difficult to realize separation efficiently, a large amount of liquid and solid particles are easy to be entrained in exhaust gas, the separation efficiency is low, and the effect is poor.
Disclosure of Invention
The invention aims to solve the technical problems and the technical task provided by the invention are to improve the prior art, provide an integrated supergravity separation device and solve the problems of low separation efficiency, good effect and poor effect of a supergravity rotating packed bed in the prior art, and liquid and solid particles are easy to be entrained in gas.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an integrated supergravity separation device, comprising:
a shell provided with an air inlet and an air outlet;
a counter-current rotary packing layer and a cross-current rotary packing layer rotatably arranged in the shell;
The air inlet is communicated to the circumferential peripheral area of the countercurrent rotary packing layer, the axial central gas phase outlet end of the countercurrent rotary packing layer is communicated to the axial inlet end of the cross-flow rotary packing layer, and the axial gas phase outlet end of the cross-flow rotary packing layer is communicated with the air outlet.
The integrated supergravity separation device integrates a traditional countercurrent rotary packing bed and a cross-flow rotary packing bed, has a compact structure and occupies space, the countercurrent rotary packing layer rotating at high speed forms an supergravity field, dust-containing gas entering the shell from the air inlet is driven to rotate by the countercurrent rotary packing layer, solid large particles and part of small particles are captured by the countercurrent rotary packing layer and thrown to the periphery of the countercurrent rotary packing layer under the action of centrifugal force, the gas passes through the radial direction of the countercurrent rotary packing layer and enters the central cavity area of the countercurrent rotary packing layer which is in a generally circular column shape, then the gas flows out from the axial central gas phase outlet end of the countercurrent rotary packing layer and enters the cross-flow rotary packing layer which is in a generally column shape or a round table shape from the axial inlet end of the cross-flow rotary packing layer, and clean small particles in the gas are further captured by the cross-flow rotary packing layer under the high-speed centrifugal action of the cross-flow rotary packing layer, and finally the clean gas flows out from the axial gas phase outlet end of the cross-flow rotary packing layer and is discharged from the air outlet of the shell. The cross-flow rotary packing layer is used for further carrying out super-gravity separation treatment on the gas treated by the counter-flow rotary packing layer, namely dust-containing gas is subjected to two-stage super-gravity separation treatment, the counter-flow rotary packing layer is used as a first stage, the cross-flow rotary packing layer is used as a second stage, the homogeneous mixing capability is good, the through flow is large, the resistance of the counter-flow rotary packing layer is reduced under the same unit through flow, the flooding point is improved, the impurity dust in the gas is effectively separated and removed, the dust removal efficiency is high, the effect is good, and the cleanliness of the treated gas is effectively improved.
Further, the counter-current rotary packing layer and the cross-flow rotary packing layer coaxially rotate, the structure is compact, the occupied space is small, the axial center gas phase outlet end of the counter-current rotary packing layer is along the rotation axis of the counter-current rotary packing layer, when the counter-current rotary packing layer and the cross-flow rotary packing layer coaxially rotate, gas flowing out of the axial center gas phase outlet end of the counter-current rotary packing layer can directly enter the cross-flow rotary packing layer without changing the direction of the gas flow, gas flow energy loss caused by the direction change of the gas flow is avoided, the direction of the gas flow in the cross-flow rotary packing layer is along the rotation axis, the direction change of the gas flow is avoided, the smoothness of the gas flow in the whole integrated supergravity separation device is effectively guaranteed, the pressure drop is reduced, the operation power consumption is reduced, and the gas can sequentially flow through the counter-current rotary packing layer and the cross-flow rotary packing layer in the integrated supergravity separation device by adopting a pumping unit with smaller power.
Furthermore, the axial center gas phase outlet end of the countercurrent rotary packing layer is in butt joint with the axial inlet end of the crossflow rotary packing layer, so that the countercurrent rotary packing device is compact in structure, small in occupied space, capable of shortening the flow path of air flow, reducing pressure drop and reducing operation power consumption.
Further, the countercurrent rotary packing layer and the cross-flow rotary packing layer are connected to the main rotating shaft which is rotatably arranged on the shell, the structure is simple, the manufacturing and the assembly are convenient, the countercurrent rotary packing layer and the cross-flow rotary packing layer are driven to rotate by the driving of the main rotating shaft through the driving mechanism, and the driving is reliable and convenient.
Further, the separator layer separating the countercurrent rotary packing layer from the cross-flow rotary packing layer is arranged in the shell, so that the countercurrent rotary packing layer and the cross-flow rotary packing layer respectively have respective running spaces, dust-containing gas entering into the circumferential peripheral area of the countercurrent rotary packing layer from the air inlet cannot directly enter into the cross-flow rotary packing layer, the air flow is ensured to flow from the countercurrent rotary packing layer to the cross-flow rotary packing layer, the stable two-stage supergravity separation treatment of the dust-containing gas is ensured, and the cleanliness of the separation treatment is ensured.
Further, both ends of the counter-current rotary packing layer in the rotation direction are provided with axial center gas phase outlet ends, both ends of the counter-current rotary packing layer in the rotation direction are respectively provided with one air flow, the air flow passes through the counter-current rotary packing layer and then flows from the axial center gas phase outlet ends of the counter-current rotary packing layer, so that the air flow can deviate to the side where the axial center gas phase outlet ends are located in the rotation direction of the counter-current rotary packing layer, namely, the air flow on the side close to the axial center gas phase outlet ends in the rotation direction of the counter-current rotary packing layer is larger, the air flow on the side far away from the axial center gas phase outlet ends can be smaller, both ends of the counter-current rotary packing layer in the rotation direction are provided with axial center gas phase outlet ends, the air flow can flow out from both ends of the counter-current rotary packing layer in the rotation direction, the air flow can be distributed uniformly in the whole axial direction of the counter-current rotary packing layer, the utilization efficiency of the counter-current rotary packing layer is improved, the air flow is prevented from flowing through the local area of the counter-current rotary packing layer in a concentrated mode, the separation effect is reduced, the phenomenon that the air flow is concentrated through the local area of the counter-current rotary packing layer is prevented from flowing the local area of the counter-current rotary packing layer, the phenomenon is prevented from causing flooding phenomenon, and the phenomenon is effectively improved.
Further, the packing density of the countercurrent rotary packing layer is increased towards the axial center gas phase outlet end direction of the countercurrent rotary packing layer upwards at the rotating shaft of the countercurrent rotary packing layer, the air flow is biased to the side where the axial center gas phase outlet end is located at the rotating shaft of the countercurrent rotary packing layer, namely, the air flow at the side, close to the axial center gas phase outlet end, of the rotating shaft of the countercurrent rotary packing layer is larger, so that the packing density of the countercurrent rotary packing layer at the side, close to the axial center gas phase outlet end, is increased to increase the air inlet resistance, the problem of uneven axial distribution of the air flow is solved, the capturing capacity of particles is improved, and the hypergravity separation effect is improved.
Further, the radial wall thickness of the countercurrent rotary packing layer is increased towards the axial center gas phase outlet end direction of the countercurrent rotary packing layer in the direction of the rotating shaft of the countercurrent rotary packing layer, so that the gas inlet resistance close to one side of the axial center gas phase outlet end can be increased, the gas flow passing through the countercurrent rotary packing layer is distributed more uniformly in the whole axial direction of the countercurrent rotary packing layer, and the supergravity separation effect is improved.
Further, the fan for exhausting the gas from the air outlet is arranged between the axial gas phase outlet end of the cross-flow rotary packing layer and the air outlet in the shell, the fan is utilized to balance wind resistance of the whole integrated type super-gravity separation device, energy loss caused by sudden increase or decrease of the gas through a flow channel, change of direction and the like is compensated, and the air is taken as a pump wind power unit of the whole integrated type super-gravity separation device, so that the air flow in the integrated type super-gravity separation device has stable flow velocity, can stably flow along the countercurrent rotary packing layer and the cross-flow rotary packing layer, ensures that dust-containing gas sequentially passes through the countercurrent rotary packing layer and the cross-flow rotary packing layer to carry out super-gravity separation treatment, and ensures long-term stable high-efficiency separation treatment capacity.
Further, the fan and the cross-flow rotary packing layer rotate coaxially, the structure is compact, the occupied space is small, the fan can more effectively pump clean gas flowing out from the axial gas phase outlet end of the cross-flow rotary packing layer, and the driving power consumption can be reduced.
Further, the rotation direction of the fan is opposite to the rotation direction of the cross-flow rotary packing layer, so that the pneumatic efficiency can be improved, the air flow is driven to rotate by the rotation of the cross-flow rotary packing layer when flowing along the axial direction of the cross-flow rotary packing layer, namely, the air flow is in a spiral advancing mode, the fan adopts the opposite rotation direction, so that the air flow can flow more efficiently, the energy loss of the air flow is reduced, and the gas-solid separation efficiency is guaranteed.
Further, the fan is arranged at the axial gas phase outlet end close to the cross-flow rotary packing layer, the structure is compact, the occupied space is small, the fan can effectively play a role in pumping and drainage, the airflow has stable flow velocity, the airflow stably flows from the axial inlet end of the cross-flow rotary packing layer to the axial gas phase outlet end of the cross-flow rotary packing layer, and the efficiency of the hypergravity separation treatment is ensured.
Furthermore, the fan is a centrifugal fan, gas enters the impeller of the fan from the axial direction, the gas is changed into the radial direction when flowing through the impeller, the air quantity and the air pressure can be very large, and the energy loss caused by the sudden increase or decrease of the gas through the flow passage, the change of the direction and the like can be effectively compensated.
Further, an annular flow channel is formed between the shell and the circumferential periphery of the countercurrent rotary packing layer, dust-containing gas entering from the air inlet flows along the annular flow channel along the tangential direction of the annular flow channel, so that the gas is distributed in the whole circumferential direction of the countercurrent rotary packing layer, then enters the countercurrent rotary packing layer from the whole circumferential periphery of the countercurrent rotary packing layer, under the action of centrifugal force, solid large particles and partial small particles are captured and thrown to the periphery of the countercurrent rotary packing layer by the countercurrent rotary packing layer, and then enters a central cavity area of the countercurrent rotary packing layer through the radial direction of the countercurrent rotary packing layer, and then flows out from an axial central gas phase outlet end of the countercurrent rotary packing layer.
Further, the circumferential periphery of the counter-current rotary packing layer is provided with a flow equalizing blade ring in the annular flow channel, the flow equalizing blade ring comprises a plurality of blades which are arranged at intervals along the circumferential direction of the counter-current rotary packing layer, and the blades divide the circumferential direction into a plurality of flow guiding air channels. The dust-containing gas entering from the air inlet flows along the annular flow passage at first, the gas flow speed is higher, so that the gas flow entering the countercurrent rotary packing layer from the surface of the countercurrent rotary packing layer close to the air inlet is minimum, the gas flow entering the countercurrent rotary packing layer from the surface of the countercurrent rotary packing layer far away from the air inlet is higher, that is, the situation that circumferential air intake is uneven is existed, and the countercurrent rotary packing layer cannot be fully utilized.
Further, the distance between adjacent blades on the flow equalizing blade ring is gradually widened along the airflow direction in the annular flow passage, under the condition of no flow equalizing blade ring, the airflow entering the countercurrent rotary packing layer is gradually increased from the countercurrent rotary packing layer surface close to the air inlet to the countercurrent rotary packing layer surface far away from the air inlet, so that the distance between adjacent blades close to the air inlet is minimum, the number of the flow guiding air channels is maximum, the airflow guided to the countercurrent rotary packing layer surface by the flow guiding air channels can be effectively increased, the air inlet is uniform in the whole circumferential direction of the countercurrent rotary packing layer, and the utilization efficiency of the countercurrent rotary packing layer is improved.
Further, the blades are inclined to the radial direction of the countercurrent rotary packing layer, the flow guiding direction of the flow guiding air duct and the air flow direction in the annular flow channel form an acute angle, so that air flow is smoothly guided to the surface of the countercurrent rotary packing layer, the change of the air flow direction is reduced, the energy loss of air flow is reduced, and the air can effectively pass through the countercurrent rotary packing layer to realize supergravity separation.
Further, the annular flow passage in the circumference along the rotatory packing layer of countercurrent still the interval be provided with a plurality of liquid nozzles, the space of annular flow passage is big, can more convenient the arranging more liquid nozzle, the dirty gas in annular flow passage can more fully carry out the mixed contact with liquid nozzle spun liquid, the water consumption is low, dirty gas can more effectively be moistened to improve gas-solid separation's efficiency and effect. The periphery of the countercurrent rotary packing layer is provided with the liquid nozzles to moisten dust-containing gas, so that the flood point can be effectively improved, the liquid amount carried by the gas is reduced, the moistened dust-containing gas can enter the central cavity area after passing through the radial area of the countercurrent rotary packing layer, under the action of the centrifugal force of the countercurrent rotary packing layer rotating at high speed, the liquid and most of solid shells are captured by the countercurrent rotary packing layer and thrown to the periphery, the liquid entering the central cavity area of the countercurrent rotary packing layer is greatly reduced, the liquid amount carried by the gas from the axial central gas phase outlet end is reduced, the separation treatment pressure of the subsequent crossflow rotary packing layer is reduced, the liquid is prevented from being entrained in the gas discharged from the gas outlet, and the cleanliness of the gas finally discharged from the gas outlet is improved. The liquid drops thrown to the periphery by the countercurrent rotary packing layer are more uniform, the rebound splashing effect of the liquid drops striking the shell is enhanced, the quantity of the liquid drops in the annular flow channel is increased, and dust collection is facilitated.
Further, a liquid collecting tank is arranged at the lower part of the shell, and the liquid mixed with the impurity particles is collected and concentrated for treatment.
Furthermore, the liquid collecting tank is connected to the liquid nozzle through the circulating assembly, so that liquid is recycled, the liquid consumption is reduced, and the production cost is reduced.
Compared with the prior art, the invention has the advantages that:
The integrated supergravity separation device integrates the traditional countercurrent rotary packing bed and the cross-flow rotary packing bed into a whole, has compact structure and small occupied space, dust-containing gas is subjected to two-stage supergravity separation treatment, the countercurrent rotary packing layer effectively separates and removes solid large particles and part of small particles, the cross-flow rotary packing layer effectively removes small particles, the homogeneous mixing capability is good, the through flow is high, the resistance of the countercurrent rotary packing layer is reduced under the same unit through flow, the flood point is improved, the impurity dust in the gas is effectively separated and removed, the dust removal efficiency is high, the effect is good, and the cleanliness of the treated gas is improved;
The flow equalizing blade ring enables the air inlet of the countercurrent rotary packing layer to be uniform in the whole circumferential direction, improves the effective air inlet area of the countercurrent rotary packing layer, improves the utilization efficiency of the countercurrent rotary packing layer, enables the air speed entering the countercurrent rotary packing layer to be far lower than the air speed of the air inlet, eliminates the condition that the local air flow entering the countercurrent rotary packing layer is too high, solves the flooding phenomenon, and also reduces the resistance caused by uneven circumferential distribution of liquid on the countercurrent rotary packing layer;
the integrated type super-gravity separation device is also integrated with a fan which can be used as a pump wind power unit, and the fan is used for balancing wind resistance of the whole integrated type super-gravity separation device to compensate energy loss caused by sudden increase or decrease of gas passing through a flow passage, change of direction and the like, so that the stability of gas flow in the integrated type super-gravity separation device is ensured;
The packing density or thickness of the countercurrent rotary packing layer near the axial center gas phase outlet end is increased to increase the air inlet resistance, solve the problem that the air flow is unevenly distributed in the axial direction of the countercurrent rotary packing layer, improve the capture capacity of particles and improve the supergravity separation effect.
Drawings
FIG. 1 is a schematic cross-sectional view of an integrated supergravity separator perpendicular to the main axis of rotation;
FIG. 2 is a schematic cross-sectional view of an integrated supergravity separator along the main axis of rotation;
FIG. 3 is a schematic cross-sectional view of a counter-current rotating packing layer;
FIG. 4 is a schematic view of a blade distribution structure of a flow equalizing blade ring;
FIG. 5 is a schematic cross-sectional view of an integrated hypergravity separation device according to the second embodiment along the main rotation axis direction;
FIG. 6 is a schematic cross-sectional view of a counter-current rotating packing layer of the third embodiment;
FIG. 7 is a radial total pressure cloud of a conventional counter-current rotating packed bed;
FIG. 8 is a radial total pressure cloud after installation of a flow equalizing blade ring;
FIG. 9 is an axial total pressure cloud of a conventional counter-current rotating packed bed;
FIG. 10 is an axial total pressure cloud after increasing the radial wall thickness or packing density of the counter-current rotating packing layer axially up to the side of the axially central gas phase outlet end.
In the figure, a housing 1; an air inlet 11; an air outlet 12; a separator layer 13; an annular flow passage 14; a liquid collecting tank 15; counter-current rotating packing layer 2; an axially central gas phase outlet end 21; a cross-flow rotary packing layer 3; an axial inlet end 31; an axial gas phase outlet end 32; a cross-flow water collection housing 33; a main rotation shaft 4; a sleeve shaft 41; a fan 5; a liquid nozzle 6; a circulation assembly 61; a flow equalizing vane ring 7; a blade 71; and a diversion tunnel 72.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The integrated supergravity separation device disclosed by the embodiment of the invention has a simple and compact structure, integrates the countercurrent rotary packed bed and the cross-flow rotary packed bed, improves the unit flow, has high flooding point, effectively avoids liquid from being brought out by gas in a large quantity, and improves the separation efficiency and the separation effect.
Example 1
As shown in fig. 1 to 4, an integrated supergravity separation device mainly comprises a shell 1, a countercurrent rotary packing layer 2 and a cross-flow rotary packing layer 3; the shell 1 is provided with an air inlet 11 and an air outlet 12; the countercurrent rotary packing layer 2 and the cross-flow rotary packing layer 3 are both rotatably arranged in the shell 1; the air inlet 11 is communicated to the peripheral area of the countercurrent rotary packing layer 2, the axial center gas phase outlet end 21 of the countercurrent rotary packing layer 2 is communicated to the axial inlet end 31 of the cross-flow rotary packing layer 3, and the axial gas phase outlet end 32 of the cross-flow rotary packing layer 3 is communicated with the air outlet 12.
Specifically, the counter-current rotary packing layer 2 and the cross-current rotary packing layer 3 are coaxially connected to a main rotating shaft 4 rotatably arranged on the casing 1, in this embodiment, the main rotating shaft 4 is arranged along a transverse direction, a framework is arranged on the main rotating shaft 4 for fixedly supporting the counter-current rotary packing layer 2 and the cross-current rotary packing layer 3, the power mechanism drives the main rotating shaft 4 to rotate so as to drive the counter-current rotary packing layer 2 and the cross-current rotary packing layer 3 to synchronously rotate in the same direction, the counter-current rotary packing layer 2 is integrally in a circular ring column shape and is filled with porous packing, one end of a central cavity area of the counter-current rotary packing layer 2 is an axial central gas phase outlet end 21, air flows from the peripheral outer wall of the counter-current rotary packing layer 2 to enter the central cavity area after passing through the radial direction of the counter-current rotary packing layer 2, then flows out from the axial central gas phase outlet end 21, and solid large particles and partial small particles are captured by the counter-current rotary packing layer 2 under the action of centrifugal force; the cross-flow rotary packing layer 3 is in a columnar structure, one end of the cross-flow rotary packing layer 3 in the rotation axial direction is an axial inlet end 31, the other end of the cross-flow rotary packing layer in the rotation axial direction is an axial gas phase outlet end 32, gas enters the cross-flow rotary packing layer 3 from the axial inlet end 31, solid small particles are captured by the cross-flow rotary packing layer 3 under the high-speed centrifugal effect of the cross-flow rotary packing layer 3, and clean gas flows out from the axial gas phase outlet end 32. In this embodiment, the counter-current rotary packing layer 2 and the cross-current rotary packing layer 3 are coaxial, and the gas flowing out from the axial center gas phase outlet end 21 of the counter-current rotary packing layer 2 can directly enter the cross-current rotary packing layer 3 from the axial inlet end 31 of the cross-current rotary packing layer 3 without changing the direction of the gas flow, so that the gas flow energy loss caused by the direction change of the gas flow is avoided, and the power consumption for driving the gas to flow stably can be reduced.
In order to ensure that the whole structure of the device is compact and the occupied space is small, the axial center gas phase outlet end 21 of the countercurrent rotary packing layer 2 is directly in butt joint with the axial inlet end 31 of the cross-flow rotary packing layer 3, namely, the countercurrent rotary packing layer 2 and the cross-flow rotary packing layer 3 are closely attached together in the axial direction of the main rotating shaft 4, and gas flows out from the axial center gas phase outlet end 21 of the countercurrent rotary packing layer 2 and enters the cross-flow rotary packing layer 3, so that the flow path of air flow is shortened, and the running power consumption is reduced.
And the caliber of the central cavity area of the countercurrent rotary packing layer 2 is matched with the peripheral caliber of the cross-flow rotary packing layer 3, namely the cross-section size of the axial central gas phase outlet end 21 of the countercurrent rotary packing layer 2 is consistent with the cross-section size of the axial inlet end 31 of the cross-flow rotary packing layer 3, so that the through flow of the countercurrent rotary packing layer 2 and the cross-flow rotary packing layer 3 is matched, and the gas flowing out of the axial central gas phase outlet end 21 of the countercurrent rotary packing layer 2 can smoothly enter the cross-flow rotary packing layer 3 from the axial inlet end 31, thereby ensuring the smoothness of gas flow and ensuring the separation treatment efficiency.
According to different separation treatment efficiency demands, the axial length of the cross-flow rotary packing layer 3 is adjusted, the time of gas in the cross-flow rotary packing layer 3 is increased, and the defect that the inertial collision effect of dust in the cross-flow rotary layer is small is overcome.
The shell 1 is internally provided with a baffle layer 13 for separating the countercurrent rotary packing layer 2 from the cross-flow rotary packing layer 3, the baffle layer 13 is perpendicular to the axial direction of the main rotating shaft 4, the baffle layer 13 surrounds the periphery of the junction of the countercurrent rotary packing layer 2 and the cross-flow rotary packing layer 3, the baffle layer 13 separates the shell 1 into relatively independent cavities, so that the countercurrent rotary packing layer 2 and the cross-flow rotary packing layer 3 respectively have respective running spaces, dust-containing gas entering into the peripheral area of the countercurrent rotary packing layer 2 from the air inlet 11 is blocked by the baffle layer 13 and cannot directly enter into the area of the cross-flow rotary packing layer 3, and the dust-containing gas can only flow out of the cross-flow rotary packing layer 3 from the axial center gas phase outlet end 21 of the countercurrent rotary packing layer 2 after passing through the countercurrent rotary packing layer 2 for hypergravity separation, thereby guaranteeing the stable two-stage hypergravity separation treatment of the dust-containing gas.
In the direction of the rotation axis of the counter-current rotating packing layer 2, the air flow is biased to the side of the axial center gas phase outlet end 21, i.e. the air flow on the side of the counter-current rotating packing layer 2 close to the axial center gas phase outlet end 21 is larger, while the air flow on the side of the counter-current rotating packing layer 2 far from the axial center gas phase outlet end 21 is smaller or even no air flow, so that the entire axial length of the counter-current rotating packing layer 2 cannot be effectively utilized. In this embodiment, the radial wall thickness of the counter-current rotary packing layer 2 increases in the direction of the axial center gas phase outlet end 21 of the counter-current rotary packing layer 2 upward at the rotation axis of the counter-current rotary packing layer 2, the packing density of the entire counter-current rotary packing layer 2 is uniform, and the radial wall thickness may be linearly increased or stepwise changed along the rotation axis of the counter-current rotary packing layer 2, so as to increase the air intake resistance of the counter-current rotary packing layer 2 on the side of the axial center gas phase outlet end 21 in the axial direction, solve the problem of axial non-uniformity of hydraulic distribution, enable the air flow to be uniformly distributed over the entire axial length of the counter-current rotary packing layer 2, improve the utilization efficiency of the counter-current rotary packing layer 2, and improve the supergravity separation effect. As shown in fig. 9 and 10, after increasing the radial wall thickness of the counter-current rotary packing layer 2 on the side axially near the axial center gas phase outlet end 21, the gas flow is effectively uniformly distributed on the axial direction of the rotary packing layer 2, the condition of overhigh local gas flow speed is eliminated, and the flooding phenomenon is solved.
The fan 5 for exhausting gas from the air outlet 12 is arranged between the axial gas phase outlet end 32 of the cross-flow rotary packing layer 3 and the air outlet 12 in the shell 1, the fan 5 is arranged to rotate coaxially with the cross-flow rotary packing layer 3, the fan 5 is arranged at the position close to the axial gas phase outlet end 32 of the cross-flow rotary packing layer 3, the structure is compact, the occupied volume is small, the fan 5 can more efficiently pump clean gas flowing out from the axial gas phase outlet end 32 of the cross-flow rotary packing layer 3, the rotating direction of the fan 5 is opposite to the rotating direction of the cross-flow rotary packing layer 3 and the counter-flow rotary packing layer 2, the pneumatic efficiency is improved, stable gas flow in the integrated supergravity separation device can be better ensured, the gas-solid separation effect is ensured, and particularly, the fan 5 is connected to a sleeve shaft 41 sleeved on a main rotating shaft 4 through a bearing ring, and the sleeve shaft 41 is driven by a power assembly to rotate so as to drive the fan 5 to operate; the fan 5 can be preferably a centrifugal fan 5, the centrifugal fan 5 changes the flow direction of clean gas flowing out from the axial gas phase outlet end 32 of the cross-flow rotary packing layer 3, the air flow direction is changed into radial direction, the air outlet 12 on the shell 1 is arranged along the tangential direction of the rotation direction of the centrifugal fan 5, the centrifugal fan 5 can realize large air quantity and large air pressure, and stable air flow in the integrated supergravity separation device is further ensured.
The casing 1 is cylindrical around the periphery of the countercurrent rotary packing layer 2, an annular flow passage 14 is formed between the casing 1 and the peripheral periphery of the countercurrent rotary packing layer 2, the direction of the air inlet 11 is along the tangential direction of the annular flow passage 14, dust-containing gas entering from the air inlet 11 flows along the annular flow passage 14, so that the gas is distributed along the peripheral direction of the countercurrent rotary packing layer 2 and then enters the countercurrent rotary packing layer 2 from the peripheral surface of the countercurrent rotary packing layer 2.
A plurality of liquid nozzles 6 are also arranged in the annular flow passage 14 along the circumferential direction of the countercurrent rotary packing layer 2 at intervals, and a liquid collecting tank 15 is arranged at the lower part of the shell 1. The liquid nozzle 6 is used for spraying water mist to fully mix dust-containing gas with water, the dust-containing gas is effectively moistened and then enters the countercurrent rotary packing layer 2 for supergravity separation, and the method has the advantages that compared with the method of spraying water in the central cavity area of the countercurrent rotary packing layer 2, the annular flow channel 14 is large in space, enough liquid nozzles 6 can be arranged to ensure that the dust-containing gas can be sufficiently moistened, so that particle impurities in the dust-containing gas can be fully mixed and contacted with the water, when the moistened dust-containing gas passes through gaps in the countercurrent rotary packing layer 2 rotating at high speed, the inertial sedimentation capacity of the particle impurities is enhanced, the particle impurities form rapid collision contact with the countercurrent rotary packing layer 2, and the centrifugal force generated by the countercurrent rotary packing layer 2 throws the particle impurities and the water to the periphery of the countercurrent rotary packing layer 2, so that the gas-solid separation process is realized, and the particle impurities and the water are collected to the liquid collecting tank 15 at the lower part through the shell 1; the traditional mode of spraying water in the central cavity area of the countercurrent rotary packing layer 2, the gas entering the central cavity area of the countercurrent rotary packing layer 2 is easy to bring water out of the axial central gas phase outlet end 21, and the phenomenon that a large amount of gas entrains liquid is serious.
The liquid collecting tank 15 is connected to the liquid nozzle 6 through the circulating assembly 61, the circulating assembly 61 is composed of a circulating pump and a circulating pipeline, water in the liquid collecting tank 15 is pumped to the liquid nozzle 6 through the circulating pipeline by the circulating pump, water resources are recycled, energy conservation and environmental protection are achieved, and cost is reduced.
The circumference of the cross-flow rotary packing layer 3 is wrapped by a cross-flow water collecting shell 33, the cross-flow water collecting shell 33 is communicated to the liquid collecting tank 15 through a water return pipe, small particles and water in the air flow are thrown to the cross-flow water collecting shell 33 on the circumference of the cross-flow rotary packing layer 3 through centrifugal force when the cross-flow rotary packing layer 3 rotates, in the embodiment, the caliber of an axial inlet end 31 of the cross-flow rotary packing layer 3 is larger than that of an axial gas phase outlet end 32 of the cross-flow rotary packing layer 3, the cross-flow water collecting shell 33 is of a structure matched with the circumference of the cross-flow rotary packing layer 3, the caliber of one end of the cross-flow water collecting shell 33 close to the axial inlet end 31 is larger than that of one end close to the axial gas phase outlet end 32, the cross-flow water collecting shell 33 is in a round table shape, and the small particles and the water are collected to the liquid collecting tank 15 along the cross-flow water collecting shell 33 and the water return pipe, so that the water can be effectively recycled, and the cost is reduced.
The dust-containing gas flows along the annular flow channel 14 at a higher speed, and at the surface of the countercurrent rotary packing layer 2 near the air inlet 11 in the circumferential direction of the countercurrent rotary packing layer 2, the dust-containing gas flows along the annular flow channel 14 before entering the countercurrent rotary packing layer 2, so that the air flow entering the countercurrent rotary packing layer 2 at the surface of the countercurrent rotary packing layer 2 near the air inlet 11 is minimum, and the air flow entering the countercurrent rotary packing layer 2 at the surface of the countercurrent rotary packing layer 2 far from the air inlet 11 is larger and faster, so that the whole circumferential surface of the countercurrent rotary packing layer 2 cannot be fully utilized, the effective air inlet area of the countercurrent rotary packing layer 2 is smaller, the local air flow speed is too high, the phenomenon of flooding occurs, and the air-liquid homogenization is seriously affected.
In order to solve the above problems, as shown in fig. 1 and fig. 4, a flow equalizing blade ring 7 is disposed at the periphery of the counter-current rotary packing layer 2 in the annular flow channel 14, the flow equalizing blade ring 7 includes a plurality of blades 71 disposed at intervals along the periphery of the counter-current rotary packing layer 2, the blades 71 are fixed on a support around the periphery of the counter-current rotary packing layer 2, the blades 71 divide the periphery into a plurality of flow guiding air channels 72, the flow equalizing blade ring 7 is a stationary component, the blades 71 are straight plates parallel to the rotating axis of the counter-current rotary packing layer 2, the length of the blades 71 along the rotating axis of the counter-current rotary packing layer 2 is equal to the axial length of the counter-current rotary packing layer 2, and the blades 71 are inclined to the radial direction of the counter-current rotary packing layer 2, so that the flow guiding direction of the flow guiding air channels 72 formed between adjacent blades 71 forms an acute angle with the air flow direction in the annular flow channel 14, thereby enabling the air flow flowing along the annular flow channel 14 to be smoothly guided to the peripheral surface of the counter-current rotary packing layer 2, avoiding the energy loss caused by excessive change of the air flow direction, ensuring that the air flow has enough energy to pass through the counter-current rotary packing layer 2, and reducing the power consumption of the super-integrated operation device; the distance between adjacent blades 71 on the flow equalizing blade ring 7 takes the position close to the air inlet 11 as the initial position and then gradually widens along the air flow direction in the annular flow channel 14, namely the width of the flow guiding air channel 72 close to the air inlet 11 is narrowest, and the width of the flow guiding air channel 72 far away from the air inlet 11 gradually increases, namely the flow guiding air channels 72 close to the air inlet 11 are arranged more densely and more in number, the width of the flow guiding air channels 72 along the air flow direction in the annular flow channel 14 is wider and more sparsely arranged, and the number of the flow guiding air channels 72 is smaller, in this way, the flow equalizing blade ring 7 enables more air flow close to the air inlet 11 to be guided to the surface of the countercurrent rotary filler layer 2 by the flow guiding air channels 72, and less air flow is guided to the surface of the countercurrent rotary filler layer 2 at the position far from the air inlet 11, so that uniform air intake is realized on the whole circumferential surface of the countercurrent rotary filler layer 2, the situation of overhigh local air flow speed is eliminated, and the flooding phenomenon is solved.
As shown in fig. 7 and 8, when the flow equalizing blade ring is not arranged, the circumferential airflow is very uneven, the local airflow speed is too high, so that the flooding phenomenon is easy to occur, after the flow equalizing blade ring is additionally arranged, the circumferential airflow is uniformly distributed, the airflow speed is reduced, and the flooding point is improved.
And the liquid nozzles 6 can be arranged on the radial outer side of the flow equalizing blade ring 7, and dust-containing gas is firstly wetted by the liquid sprayed by the liquid nozzles 6 and then uniformly guided to the circumferential surface of the countercurrent rotary packing layer 2 by the flow equalizing blade ring 7, so that the resistance caused by uneven water distribution is reduced.
Example two
As shown in fig. 5, the difference from the first embodiment is that the two ends of the counter-current rotary packing layer 2 in the rotation direction are both provided with the axial center gas phase outlet 21, the two ends of the counter-current rotary packing layer 2 in the rotation direction are respectively provided with one cross-current rotary packing layer 3, the two air outlets 12 are arranged on the casing 1 and are respectively communicated with the axial gas phase outlet 32 of the counter-current rotary packing layer 2, the fan 5 is also respectively arranged at the axial gas phase outlet 32 of each counter-current rotary packing layer 2, the air inlet 11 on the casing 1 is arranged at the middle position of the counter-current rotary packing layer 2 in the rotation direction, the dust-containing gas flows from the middle region of the counter-current rotary packing layer 2 in the rotation direction to the two ends of the rotation direction, and the radial wall thickness of the counter-current rotary packing layer 2 increases from the middle to the two ends in the rotation direction of the counter-current rotary packing layer 2, so that the air inlet resistance of the counter-current rotary packing layer 2 in the axial direction is close to the axial center gas phase outlet 21 side is increased, the whole rotation axis of the counter-current rotary packing layer 2 is uniformly air-flowed upward, the whole rotation is improved, the whole gravity separation point of the counter-current rotary packing layer 2 is improved, the whole axial utilization ratio is improved, and the super-efficient separation effect is improved.
Example III
As shown in fig. 6, the difference from the first embodiment is that the packing density of the counter-current rotating packing layer 2 increases in the direction of the axial center gas phase outlet end 21 of the counter-current rotating packing layer 2 upward at the rotation axis of the counter-current rotating packing layer 2, the radial thickness of the counter-current rotating packing layer 2 is uniform and uniform upward along the rotation axis of the counter-current rotating packing layer 2, the packing density is stepwise changed along the rotation axis of the counter-current rotating packing layer 2, the counter-current rotating packing layer 2 is formed by porous packing filling, the packing void ratio on the side close to the axial center gas phase outlet end 21 is smaller and smaller, thereby increasing the air intake resistance on the side close to the axial center gas phase outlet end 21 in the axial direction of the counter-current rotating packing layer 2, solving the problem of axial non-uniformity of hydraulic distribution, enabling the air flow to be uniformly distributed over the entire axial length of the counter-current rotating packing layer 2, improving the utilization efficiency of the counter-current rotating packing layer 2, and improving the supergravity separation effect.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (16)
1. An integrated supergravity separation device, comprising:
a shell provided with an air inlet and an air outlet;
a counter-current rotary packing layer and a cross-current rotary packing layer rotatably arranged in the shell;
The air inlet is communicated with the circumferential peripheral area of the countercurrent rotary packing layer, the axial central gas phase outlet end of the countercurrent rotary packing layer is communicated with the axial inlet end of the cross-flow rotary packing layer, and the axial gas phase outlet end of the cross-flow rotary packing layer is communicated with the air outlet;
An annular flow channel is formed between the shell and the circumferential periphery of the countercurrent rotary packing layer, and the direction of the air inlet is along the tangential direction of the annular flow channel;
the periphery of the countercurrent rotary packing layer is provided with a flow equalizing blade ring in the annular flow passage, the flow equalizing blade ring comprises a plurality of blades which are arranged at intervals along the periphery of the countercurrent rotary packing layer, and the blades divide the periphery into a plurality of flow guiding air channels;
The distance between adjacent blades on the flow equalizing blade ring is gradually widened along the air flow direction in the annular flow passage;
The blades are inclined to the radial direction of the countercurrent rotary packing layer, and the flow guiding direction of the flow guiding air duct and the air flow direction in the annular flow channel form an acute angle.
2. The integrated supergravity separation device according to claim 1, wherein the counter-current rotating packing layer rotates coaxially with the cross-current rotating packing layer.
3. The integrated supergravity separator according to claim 2, wherein the axial central gas phase outlet end of the counter-current rotating packing layer is in butt joint with the axial inlet end of the cross-current rotating packing layer.
4. The integrated supergravity separator according to claim 3, wherein the counter-current rotating packing layer and the cross-current rotating packing layer are connected to a main rotating shaft rotatably provided to the housing.
5. An integrated supergravity separator according to claim 3, wherein a separator layer is provided in the housing to separate the counter-current rotating packing layer from the cross-current rotating packing layer.
6. The integrated supergravity separator according to any of claims 1-5, wherein the counter-current rotating packing layer is provided with axial central gas phase outlet ends at both ends in the rotational direction, and the cross-current rotating packing layer is provided with one at each of both ends in the rotational direction of the counter-current rotating packing layer.
7. The integrated supergravity separator according to any of claims 1-5, wherein the packing density of the counter-current rotating packing layer increases in the direction of the axis of rotation of the counter-current rotating packing layer towards the axially central gas phase outlet end of the counter-current rotating packing layer.
8. The integrated supergravity separator according to any of claims 1-5, wherein the radial wall thickness of the counter-current rotating packing layer increases in the direction of the rotational axis of the counter-current rotating packing layer towards the axial central gas phase outlet end of the counter-current rotating packing layer.
9. The integrated supergravity separator according to any of claims 1 to 5, wherein a fan for exhausting gas from the air outlet is further arranged in the housing between the axial gas phase outlet end of the cross-flow rotary packing layer and the air outlet.
10. The integrated supergravity separator according to claim 9, wherein the fan is rotatable coaxially with the cross-flow rotary packing layer.
11. The integrated supergravity separation device according to claim 10, wherein the direction of rotation of the fan is opposite to the direction of rotation of the cross-flow rotating packing layer.
12. The integrated supergravity separator according to claim 10, wherein the fan is positioned adjacent to the axial gas phase outlet end of the cross-flow rotating packing layer.
13. The integrated supergravity separation device according to claim 10, wherein the fan is a centrifugal fan.
14. The integrated supergravity separator according to claim 1, wherein a plurality of liquid nozzles are further arranged in the annular flow passage at intervals along the circumferential direction of the counter-current rotary packing layer.
15. The integrated supergravity separation device according to claim 14, wherein the housing is provided with a sump in a lower portion thereof.
16. The integrated supergravity separator according to claim 15, wherein the sump is connected to the liquid nozzle by a circulation assembly.
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| CN112983390B (en) * | 2021-03-30 | 2024-08-09 | 四川长仪油气集输设备股份有限公司 | Matrix type flexible sand removal equipment for natural gas well |
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| CN201101903Y (en) * | 2007-08-15 | 2008-08-20 | 牛特 | Hypergravity centrifugal separation device with vapour tension compensation |
| CN210473309U (en) * | 2019-08-09 | 2020-05-08 | 成都市珑熙科技有限公司 | Integrated supergravity separation device |
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| CN1274391C (en) * | 2003-10-20 | 2006-09-13 | 中国石油化工股份有限公司 | Method of eliminating impurity from gas phase |
| CN1247302C (en) * | 2003-10-31 | 2006-03-29 | 中国石油化工股份有限公司 | Ultragravity field rotary bed mass transfer and conversion unit |
| CN201277579Y (en) * | 2008-10-16 | 2009-07-22 | 刘辉 | Large-capacity hypergravity machine |
| TWI662988B (en) * | 2018-07-17 | 2019-06-21 | 超重力有限公司 | Counter-current type liquid mist removing hypergravity device |
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| CN201101903Y (en) * | 2007-08-15 | 2008-08-20 | 牛特 | Hypergravity centrifugal separation device with vapour tension compensation |
| CN210473309U (en) * | 2019-08-09 | 2020-05-08 | 成都市珑熙科技有限公司 | Integrated supergravity separation device |
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