CN108671639B - Finger-rolling type crop straw carbonized flue gas dust removal and coke removal device - Google Patents
Finger-rolling type crop straw carbonized flue gas dust removal and coke removal device Download PDFInfo
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- CN108671639B CN108671639B CN201810245636.0A CN201810245636A CN108671639B CN 108671639 B CN108671639 B CN 108671639B CN 201810245636 A CN201810245636 A CN 201810245636A CN 108671639 B CN108671639 B CN 108671639B
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- cylinder body
- flue gas
- finger
- poking
- rotating shaft
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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
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
A finger-rolling type crop straw carbonized flue gas dust removal and decoking device belongs to the technical field of biological carbonization. The device comprises a bracket and a cylinder body arranged on the bracket, wherein the front and rear bottom ends of the cylinder body are respectively provided with a collecting device, one end of the cylinder body is provided with an air inlet, the upper part of the side wall of the other end of the cylinder body is provided with an air outlet, a flue gas separation device is arranged in the cylinder body, and a rotating shaft of the flue gas separation device is connected with a motor and a coupler of a transmission device; the flue gas is subjected to decoking, dedusting and separation in the cylinder body through the air inlet, the separated flue gas is discharged through the air outlet, and the flue gas Jiao Fenchen falls into the collecting device through the cylinder body, and the end part of the collecting device is connected with the receiving device and is received by the receiving device. The finger roll separating device consists of the poking fingers and the rotating shaft, and the poking fingers are used for increasing collision, aggregation and decoking of vaporous gas, and particularly the finger structure is beneficial to decoking so as to solve the problem of blockage in the prior filtering method; the cross sections of the poking fingers are different, so that tar is separated under centrifugal force; the poking fingers are spirally arranged, so that the poking fingers are uniformly distributed and balanced, and the gas is discharged.
Description
Technical Field
The invention belongs to the technical field of biological carbonization, and particularly relates to a finger-rolling type crop straw carbonized flue gas dust and coke removing device.
Background
The method is a large agricultural country, the crop straw yield is high, but the utilization rate is low, about 35% of crop straw becomes a famous waste, a large amount of straw is accumulated in the field, burned and the like, so that biomass resources are wasted, and serious air pollution is caused. The biochar is generated by pyrolysis of crop straws, the biochar is very widely applied, and straw carbonization is one of effective measures for recycling crop straws. A large amount of flue gas is generated in the carbonization process of the straw, the flue gas contains tar and dust, which are indispensable byproducts in the pyrolysis process of biomass, and the flue gas is not separated, so that the extraction and the subsequent utilization of combustible gas in the flue gas are influenced, and the utilization efficiency of biomass energy is indirectly caused; meanwhile, tar is adhered to the inner wall of the device, so that corrosion of the device is aggravated, the service life is shortened, and when serious, the device is blocked, and the pyrolysis quality and efficiency are affected. If the waste water is directly discharged, the environment is seriously polluted, the human health and the environmental safety are threatened, and meanwhile, the waste of biomass energy is also caused.
The invention patent application number 201710658210.3 discloses a cyclone flue gas dust removal device, which comprises a shell, an ash bucket, an air inlet pipe and an air outlet pipe, wherein a cavity for flue gas flow is formed in the shell. The invention has a certain dust removal effect, however, the smoke generated by biological carbonization also contains some coke products, only cyclone separation is adopted by the structure of the invention, and the centrifugal force generated by the cyclone can only separate dust with large particle size and tar drops, so that the dust with small particle size is difficult to remove. The filter screen is adopted for filtering, so that tar is seriously blocked, and the purposes of removing tar and dust cannot be better achieved.
Disclosure of Invention
Aiming at the technical problems, the invention provides a finger-rolling type crop straw carbonized flue gas dust-removing and decoking device, which adopts two-stage dust-removing and decoking combined with cyclone separation and finger-poking centrifugal separation; so as to improve the dust removal and decoking efficiency and the separation rate of the straw carbonized flue gas; meanwhile, the problem of blockage caused by dust filtration and decoking is solved.
The aim of the invention is realized by the following technical scheme:
a finger-rolling type crop straw carbonized flue gas dust removal and decoking device, comprising:
the bracket is used for supporting the device;
the device comprises a cylinder body, a gas inlet, a gas outlet, a gas separation device, a motor, a transmission device and a shaft coupling, wherein the cylinder body is arranged on a bracket, the front and rear bottom ends of the cylinder body are respectively provided with a collecting device, one end of the cylinder body is provided with the gas inlet, the upper part of the side wall of the other end of the cylinder body is provided with the gas outlet, the cylinder body is internally provided with the gas separation device, and the shaft of the gas separation device is connected with the motor and the transmission device;
the flue gas is subjected to decoking, dedusting and separation in the cylinder body through the air inlet, the separated flue gas is discharged through the air outlet, and the flue gas Jiao Fenchen falls into the collecting device through the cylinder body, and the end part of the collecting device is connected with the receiving device and is received by the receiving device.
Further, the flue gas separation device is a ladder plectrum centrifugal device, and comprises a ladder rotating shaft, a plurality of plectrums, a left end cover and a right end cover, wherein the plurality of plectrums are arranged along the circumference of the ladder rotating shaft, the ladder rotating shaft is arranged in a cylinder body, two ends of the ladder rotating shaft are respectively arranged on a bracket through a bearing and a bearing seat, and one end of the ladder rotating shaft is connected with a motor and a coupling of a transmission device.
Further, the poking fingers are spirally arranged along the surface of the rotating shaft, and the number of spiral heads is even.
Further, the diameters of the sections of the poking fingers are different, the diameter of the root is larger than that of the tail end, and the taper of the poking fingers is 1.5-2.5 degrees.
Further, the interval between the poking fingers in the circumferential direction is 3 d-5 d; the distance h in the axial direction is 1 d-2 d, and d is the diameter of the root of the poking finger.
Further, the diameter d= (0.012-0.018) D of the root part of the poking finger is the diameter of the small end of the cylinder.
Further, the gap delta between the end part of the poking finger and the inner wall of the cylinder body=10-20 mm.
Further, a small end baffle is arranged between the small end rotating shaft and the small end cylinder.
Further, a large end baffle is arranged between the large end rotating shaft and the large end cylinder.
Further, the small end baffle and the large end baffle are annular baffles, and 3-5 layers are respectively arranged; the crossing length of the small end baffle, the large end baffle and the poking finger is 50-80 mm.
The beneficial effects of the invention are as follows:
1. the invention relates to a finger roll separating device formed by a poking finger and a rotating shaft, which utilizes different centrifugal forces generated by different diameters of finger rolls to form multistage dust removal and decoking; so as to improve the dust and coke removal efficiency of the straw carbonized flue gas; the impact, aggregation and decoking of vaporific gas are increased by utilizing the poking fingers, and especially the finger structure is favorable for decoking so as to solve the blocking problem of the current filtering method and the like; the cross sections of the poking fingers are different, and the thick tail ends of the root parts are thin, so that tar is separated under centrifugal force; the poking fingers are spirally arranged, so that the poking fingers are uniformly distributed and balanced, and the gas is discharged.
2. The multi-layer baffle is arranged in the barrel of the separating device to interfere the flow of the smoke, so that the problem that the smoke moves along the barrel wall under the action of centrifugal force and the poking fingers cannot contact is solved, the action of the poking fingers on the smoke is increased, and the dust and coke removing effect is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged schematic view of the portion I in fig. 1.
In the figure: 1. the device comprises an air inlet, a left side bearing and a bearing seat, a left side sealing device, a left side end cover, a finger, a rotating shaft, a small end baffle, a cylinder, a large end baffle, a gas outlet, an air outlet regulating device, a right side end cover, a right side sealing device, a motor and transmission device, a coupling, a right side bearing and a bearing seat, a collecting device I, a collecting device 18, a receiving device II, a collecting device 20, a receiving device II and a bracket 21, wherein the left side bearing and the bearing seat are arranged in the left side.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
Example 1: as shown in FIG. 1, the invention relates to a finger-rolling type crop carbonization flue gas dust removal and decoking device, which comprises:
a stand 21 for supporting the present device;
the device comprises a cylinder body 8, a bracket 21, a collecting device I17 and a collecting device II19, wherein the collecting devices are respectively arranged at the front and rear bottom ends of the cylinder body 8, one end of the cylinder body 8 is provided with an air inlet 1, the upper side of the side wall of the other end is provided with an air outlet 10, a flue gas separating device is arranged in the cylinder body 8, and a rotating shaft 6 of the flue gas separating device is connected with a motor and a coupler 15 of a transmission device 14;
the flue gas is subjected to decoking, dedusting and separation in the cylinder 8 through the air inlet 1, the separated flue gas is discharged through the air outlet 10, the flue gas, the coke dust and the dust fall into the collecting device I17 and the collecting device II19 through the cylinder 8, and the end parts of the collecting device I17 and the collecting device II19 are respectively connected with the receiving device I18 and the receiving device II20 and are received by the receiving device I18 and the receiving device II 20. Wherein the collecting device I17 and the collecting device II19 are of a frustum cylinder structure, and the receiving device I18 and the receiving device II20 are collecting cylinders.
The flue gas separation device is a ladder finger centrifugal device and comprises a ladder rotating shaft 6, a plurality of fingers 5, left and right side end covers 4 and 12 which are arranged along the circumference of the ladder rotating shaft 6, the ladder rotating shaft 6 is arranged in a cylinder 8, two ends of the ladder rotating shaft 6 are respectively arranged on a bracket 21 through left and right bearings and bearing seats 2 and 16, and one end of the ladder rotating shaft 6 is connected with a motor and a coupler 15 of a transmission device 14.
As shown in fig. 2, the fingers 5 are spirally mounted along the surface of the rotating shaft 6, and the number of spiral heads is even, so that the fingers 5 are uniformly distributed and balanced, and gas is discharged. The diameters of the sections of the poking fingers 5 are different, the diameter of the root is larger than that of the tail end, the taper of the poking fingers is 2.5 degrees, and tar threshing under centrifugal force is facilitated. The interval between the poking fingers 5 in the circumferential direction is 5d; the distance h in the axial direction is 2d, d being the root diameter of the finger 5. The diameter d=0.013 d of the root of the finger 5 is the diameter of the small end of the barrel 8. The gap delta=20mm between the end of the poking finger 5 and the wall of the cylinder body 8.
The step rotating shaft 6 is formed by arranging a transition shaft between a small-end rotating shaft and a large-end rotating shaft. The cylinder 8 is a stepped cylinder and is formed by arranging a transition cylinder between a small-end straight cylinder and a large-end straight cylinder. And a small end baffle 7 is arranged between the small end rotating shaft and the small end cylinder body. And a large end baffle 9 is arranged between the large end rotating shaft and the large end cylinder body. The small end baffle 7 and the large end baffle 9 are annular baffles, and 3-5 layers are respectively arranged; the length b of the intersection of the small end baffle 7, the large end baffle 9 and the poking finger 5 is 65mm.
The working principle of the invention is as follows:
according to the invention, smoke enters the cylinder 8 through the air inlet 1, the motor and the transmission device 14 drive the stepped rotating shaft 6 to rotate through the coupler 15, the smoke passes through the fingers 5 in a roundabout way under the action of centrifugal force, the fingers 5 are used for increasing collision, aggregation and decoking of mist gas, other separated impurities such as tar and dust are discharged through the air outlet 10, and the impurities such as tar and dust are received by the receiving device I18 and the receiving device II 20.
Example 2: this example differs from example 1 in that: in this example, a small end baffle 7 is disposed between the small end rotating shaft and the small end cylinder. And a large end baffle 9 is arranged between the large end rotating shaft and the large end cylinder body. The small end baffle 7 and the large end baffle 9 are annular baffles, and 3 layers are respectively arranged; the length of the intersection of the small end baffle 7, the large end baffle 9 and the poking finger 5 is 80mm.
The diameters of the sections of the poking fingers 5 are different, the diameter of the root is larger than that of the tail end, the taper of the poking fingers is 1.5 degrees, and tar threshing under centrifugal force is facilitated. The interval between the poking fingers 5 in the circumferential direction is 3d; the distance h in the axial direction is 1d, d being the root diameter of the finger 5. The diameter d=0.018d of the root portion of the finger 5, d being the diameter of the small end of the barrel 8. The gap delta=18mm between the end of the poking finger 5 and the wall of the cylinder body 8.
Example 2: this example differs from example 1 in that: and a large end baffle 9 is arranged between the large end rotating shaft and the large end cylinder body. The small end baffle 7 and the large end baffle 9 are annular baffles, the small end baffle 7 is provided with 5 layers, and the large end baffle 9 is provided with 3 layers; the length b of the intersection of the small end baffle 7, the large end baffle 9 and the poking finger 5 is 80mm.
The diameters of the sections of the poking fingers 5 are different, the diameter of the root is larger than that of the tail end, the taper of the poking fingers is 2.5 degrees, and tar threshing under centrifugal force is facilitated. The interval between the poking fingers 5 in the circumferential direction is 5d; the distance h in the axial direction is 2d, d being the root diameter of the finger 5. The diameter d=0.012d of the root part of the poking finger 5, and d is the diameter of the small end of the barrel 8. The gap delta=10mm between the end part of the poking finger 5 and the inner wall 8 of the cylinder body.
Example 3: this example differs from example 1 in that: and a large end baffle 9 is arranged between the large end rotating shaft and the large end cylinder body. The small end baffle 7 and the large end baffle 9 are annular baffles, the small end baffle 7 is provided with 4 layers, and the large end baffle 9 is provided with 5 layers; the length b of the intersection of the small end baffle 7, the large end baffle 9 and the poking finger 5 is 60mm.
The diameters of the sections of the poking fingers 5 are different, the diameter of the root is larger than that of the tail end, the taper of the poking fingers is 2 degrees, and tar threshing under centrifugal force is facilitated. The interval between the poking fingers 5 in the circumferential direction is 4d; the distance h in the axial direction is 1.5d, d being the root diameter of the finger 5. The diameter d=0.016d of the root of the poking finger 5, and D is the diameter of the small end of the barrel 8. The gap delta=15 mm between the end of the poking finger 5 and the wall of the cylinder body 8.
Example 4: this example differs from example 1 in that: and a large end baffle 9 is arranged between the large end rotating shaft and the large end cylinder body. The small end baffle 7 is provided with 5 layers, and the large end baffle 9 is provided with 4 layers; the length b of the intersection of the small end baffle 7, the large end baffle 9 and the poking finger 5 is 70mm.
The diameters of the sections of the poking fingers 5 are different, the diameter of the root is larger than that of the tail end, the taper of the poking fingers is 1.8 degrees, and tar threshing under centrifugal force is facilitated. The interval between the poking fingers 5 in the circumferential direction is 3.5d; the distance h in the axial direction is 1.8d, d being the root diameter of the finger 5. The diameter d=0.012d of the root part of the poking finger 5, and d is the diameter of the small end of the barrel 8. The gap delta=12 mm between the end of the poking finger 5 and the wall of the cylinder body 8.
Example 5: this example differs from example 1 in that: and a large end baffle 9 is arranged between the large end rotating shaft and the large end cylinder body. The small end baffle 7 and the large end baffle 9 are annular baffles, the small end baffle 7 is provided with 4 layers, and the large end baffle 9 is provided with 4 layers; the length b of the intersection of the small end baffle 7, the large end baffle 9 and the poking finger 5 is 70mm.
The poking fingers 5 are spirally arranged along the surface of the rotating shaft 6, and the number of spiral heads is even, so that the poking fingers 5 are uniformly distributed and balanced, and gas is discharged. The diameters of the sections of the poking fingers 5 are different, the diameter of the root is larger than that of the tail end, the taper of the poking fingers is 1.7 degrees, and tar threshing under centrifugal force is facilitated. The interval between the poking fingers 5 in the circumferential direction is 4.5d; the distance h in the axial direction is 1.2d, d being the root diameter of the finger 5. The diameter d=0.015 d of the root of the finger 5, and d is the diameter of the small end of the cylinder 8. The gap delta=16 mm between the end of the poking finger 5 and the wall of the cylinder body 8.
Claims (7)
1. The utility model provides a refer to roll formula crop straw carbomorphism flue gas dust removal decoking device which characterized in that: comprising the following steps:
the bracket is used for supporting the device;
the device comprises a cylinder body, a gas inlet, a gas outlet, a gas separation device, a motor, a transmission device and a shaft coupling, wherein the cylinder body is arranged on a bracket, the front and rear bottom ends of the cylinder body are respectively provided with a collecting device, one end of the cylinder body is provided with the gas inlet, the upper part of the side wall of the other end of the cylinder body is provided with the gas outlet, the cylinder body is internally provided with the gas separation device, and the shaft of the gas separation device is connected with the motor and the transmission device;
the flue gas is subjected to decoking, dedusting and separation in the cylinder body through the air inlet, the separated flue gas is discharged through the air outlet, the flue gas Jiao Fenchen falls into the collecting device through the cylinder body, and the end part of the collecting device is connected with the receiving device and is received by the receiving device;
the flue gas separation device is a ladder-shaped shifting finger centrifugal device and comprises a ladder rotating shaft, a plurality of shifting fingers, a left end cover and a right end cover, wherein the shifting fingers are arranged along the circumference of the ladder rotating shaft; the step rotating shaft is formed by arranging a transition shaft between a small-end rotating shaft and a large-end rotating shaft; the cylinder body is a stepped cylinder and is formed by arranging a transition cylinder between a small-end straight cylinder and a large-end straight cylinder;
the diameters of the sections of the poking fingers are different, the diameter of the root is larger than that of the tail end, and the taper of the poking fingers is 1.5-2.5 degrees; the gap delta between the end part of the poking finger and the inner wall of the cylinder body is=10-20 mm.
2. The finger-rolling type crop straw carbonized flue gas dust removal and decoking device according to claim 1, wherein: the poking fingers are spirally arranged along the surface of the rotating shaft, and the number of screw heads is even.
3. The finger-rolling type crop straw carbonized flue gas dust removal and decoking device according to claim 1, wherein: the interval between the poking fingers in the circumferential direction is 3 d-5 d; the distance h in the axial direction is 1 d-2 d, and d is the diameter of the root of the poking finger.
4. The finger-rolling type crop straw carbonized flue gas dust removal and decoking device according to claim 1, wherein: the diameter d= (0.012-0.018) D of the root part of the poking finger is the diameter of the small end of the cylinder.
5. The finger-rolling type crop straw carbonized flue gas dust removal and decoking device according to claim 4, wherein: and a small end baffle is arranged between the small end rotating shaft and the small end cylinder body.
6. The finger-rolling type crop straw carbonized flue gas dust removal and decoking device according to claim 5, wherein: and a large end baffle is arranged between the large end rotating shaft and the large end cylinder body.
7. The finger-rolling type crop straw carbonized flue gas dust removal and decoking device according to claim 6, wherein: the small end baffle and the large end baffle are annular baffles, and 3-5 layers are respectively arranged; the crossing length of the small end baffle, the large end baffle and the poking finger is 50-80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810245636.0A CN108671639B (en) | 2018-03-23 | 2018-03-23 | Finger-rolling type crop straw carbonized flue gas dust removal and coke removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810245636.0A CN108671639B (en) | 2018-03-23 | 2018-03-23 | Finger-rolling type crop straw carbonized flue gas dust removal and coke removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108671639A CN108671639A (en) | 2018-10-19 |
| CN108671639B true CN108671639B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810245636.0A Active CN108671639B (en) | 2018-03-23 | 2018-03-23 | Finger-rolling type crop straw carbonized flue gas dust removal and coke removal device |
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| CN101224362A (en) * | 2007-11-06 | 2008-07-23 | 宋国柱 | Novel dedusting method and device |
| CN101224385A (en) * | 2007-11-02 | 2008-07-23 | 杨传芳 | Tube type flue gas desulfurization machine with multi-field fine molecular combined effect |
| CN101314092A (en) * | 2007-05-28 | 2008-12-03 | 方强 | Rotary dust wiper |
| CN201482303U (en) * | 2009-05-15 | 2010-05-26 | 武汉创新环保工程有限公司 | Atmosphere dust particle centrifugal purification device |
| CN201510820U (en) * | 2009-09-25 | 2010-06-23 | 安徽省利特环保技术有限公司 | Micro particle dust collector |
| CN103228332A (en) * | 2010-08-26 | 2013-07-31 | 创科地板护理技术有限公司 | A device to remove particles from a gas stream |
| CN106497610A (en) * | 2016-10-13 | 2017-03-15 | 武汉工程大学 | A kind of biomass gas tar oil removes system |
| CN208512084U (en) * | 2018-03-23 | 2019-02-19 | 沈阳农业大学 | A kind of finger roll-type agricultural crop straw charing flue gas ash removal coke removing appts |
-
2018
- 2018-03-23 CN CN201810245636.0A patent/CN108671639B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314092A (en) * | 2007-05-28 | 2008-12-03 | 方强 | Rotary dust wiper |
| CN101224385A (en) * | 2007-11-02 | 2008-07-23 | 杨传芳 | Tube type flue gas desulfurization machine with multi-field fine molecular combined effect |
| CN101224362A (en) * | 2007-11-06 | 2008-07-23 | 宋国柱 | Novel dedusting method and device |
| CN201482303U (en) * | 2009-05-15 | 2010-05-26 | 武汉创新环保工程有限公司 | Atmosphere dust particle centrifugal purification device |
| CN201510820U (en) * | 2009-09-25 | 2010-06-23 | 安徽省利特环保技术有限公司 | Micro particle dust collector |
| CN103228332A (en) * | 2010-08-26 | 2013-07-31 | 创科地板护理技术有限公司 | A device to remove particles from a gas stream |
| CN106497610A (en) * | 2016-10-13 | 2017-03-15 | 武汉工程大学 | A kind of biomass gas tar oil removes system |
| CN208512084U (en) * | 2018-03-23 | 2019-02-19 | 沈阳农业大学 | A kind of finger roll-type agricultural crop straw charing flue gas ash removal coke removing appts |
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| CN108671639A (en) | 2018-10-19 |
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