EP3463674A1 - Cyclone for the separation of particles from a fluid - Google Patents
Cyclone for the separation of particles from a fluidInfo
- Publication number
- EP3463674A1 EP3463674A1 EP17726940.4A EP17726940A EP3463674A1 EP 3463674 A1 EP3463674 A1 EP 3463674A1 EP 17726940 A EP17726940 A EP 17726940A EP 3463674 A1 EP3463674 A1 EP 3463674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ramp
- feed channel
- housing
- cyclone
- cyclone according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002245 particle Substances 0.000 title claims abstract description 64
- 239000012530 fluid Substances 0.000 title claims abstract description 42
- 238000000926 separation method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 20
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003260 vortexing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
Definitions
- the invention relates to a cyclone for the separation of solid particles and/or at least one liquid from a fluid.
- the cyclone comprises a housing, an inlet opening for introducing the fluid together with the solid particles and/or the at least one liquid into the housing, a discharge port for the solid particles and/or the at least one liquid, a housing cap which is arranged opposite to the discharge port, a dip tube (immersion tube) being provided in the housing cap (cover) for discharging fluid from the housing and a feed channel which opens out into the inlet opening in the housing for introducing the fluid together with the solid particles and/or the at least one liquid into the housing.
- the fluid is a gas stream or, in the case of hydrocyclones, a liquid stream.
- the main portion of the volume stream of the fluid (about 90 %) is forced as a main stream onto a helical path, so that due to the centrifugal force the particles to be separated are thrown towards the wall of the housing. This results in the fact that the particles are separated from the stream and fall or flow downwards into the direction of the discharge port.
- the fluid being purified by removal of the particles exits the cyclone, for example, through a vortex finder in the form of a dip tube.
- the ramp at the upper wall of the feed channel extends up to the inlet opening of the housing. According to that the ramp starts in the feed channel and ends for example at the posi- tion of the inlet opening. Accordingly, the ramp is not positioned in the center, but at the end of the feed channel. So the particles are deflected downwards directly before the inlet opening of the housing, which results in a particularly effective prevention of an accumulation of particles in the low energy zone.
- the at least one ramp may have a design of a wedge. The arrangement of the ramp is chosen such that the ramp in the direction of the inlet opening of the housing becomes higher. A ramp having the shape of a wedge has a particularly simple design and, therefore, can be produced very cost-effective.
- the at least one ramp may have a concave design, wherein the slope of the ramp in the direction of the inlet opening of the housing increases.
- the radius of curvature of the ramp can be varied. With this additional parameter the flow of the fluid can be optimized in a particularly effective manner.
- the ramp at the housing cap may rest against an outer wall of the housing.
- the deflection of the circulating fluid in the region near the outer wall of the housing results particularly effectively in the fact that the particles are removed from the low energy zone.
- a ramp is arranged each, wherein it is possible that these ramps are connected via a, preferably cuboidal, connecting element.
- the ramp adjoining the inner wall of the feed channel effects the particles traveling at the inner path while the ramp at the housing cap adjoining the outer wall of the housing effects the particles traveling at the outer path.
- the complete boundary layer is separated from the housing cap so that no undesired particle extraction from the cyclone is effected via the boundary layer and the dip tube.
- the feed channel and the housing cap are characterized by a geometric, in particularly vertical displacement, so that also the respective ramps may be characterized by a geometric, in particularly vertical displacement.
- the design according to the present invention provides for improving the separation efficiency of the cyclone by 10 to 20%.
- Fig. 3b shows a view analogous to Fig. 1 b of the cyclone of Fig. 3a;
- Fig. 3c shows a view analogous to Fig. 1 c of the cyclone of Fig. 3a;
- Fig. 4a shows a view analogous to Fig. 1 a of a cyclone according to a fourth embodiment
- Fig. 4b shows a view analogous to Fig. 1 b of the cyclone of Fig. 4a;
- Fig. 4c shows a view analogous to Fig. 1 ac of the cyclone of Fig. 4a
- Fig. 5a shows a view analogous to Fig. 1 a of a cyclone according to a fifth embodiment
- Fig. 6c shows a view analogous to Fig. 1 c of the cyclone of Fig. 6a;
- Fig. 7a shows a view analogous to Fig. 1 a of a cyclone according to a seventh embodiment
- the basic construction of a cyclone 1 as is used for the separation of solids or liquids from a fluid stream is schematically shown in Fig. 1 a.
- the cyclone 1 according to the present invention of Fig. 1 a comprises a cylindrical upper housing part 2 and a conical lower housing part 3.
- the cylindrical housing part 2 and the conical housing part 3 together form the housing 2, 3 of the cyclone 1 , i.e. the cyclone housing 2, 3.
- the upper end of the cyclone housing 2, 3 is closed with a housing cap 5.
- a dip tube or vortex finder 12 is inserted in a central opening of the housing cap 5 so that the dip tube 12 extends partially outside and partially inside the cyclone housing 2, 3.
- a feed channel 7 is connected with its first end with an inlet opening 6 in the cylindrical housing part 2 of the cyclone 1 .
- the feed channel 7 may, for example, be connected with the discharge opening of a blast furnace/a fluidized bed.
- the inlet opening 6 and the feed channel 7 which is directly placed thereon are arranged at the upper end of the cylindrical housing part 2.
- the upper wall 9 of the feed channel 7 and the housing cap 5 are arranged in a coplanar manner.
- the cyclone 1 is arranged such that the conical housing part 3 is oriented downwards into the direction of the gravitational field.
- the discharge port 4 is provided through which the particles and/or the liquid which has been extracted from the fluid stream can be discharged.
- the fluid stream together with the particles is fed through the feed channel 7 and the inlet opening 6 into the housing part 2. This, typically, is effected in a tangential manner (cf. Fig. 1 b) so that a circular movement of the fluid stream is induced.
- the fluid stream moves on a helical path from the inlet opening 6 into the direction of the conical region 3. Due to the centrifugal force the particles are transported to the outer wall of the cyclone 1 and there, by the effect of gravitation, they move into the direction of the discharge port 4.
- the purified gas or, in the case of a hydrocyclone, the purified liquid exits the cy- clone 1 upwards through the dip tube 12.
- first ramp 10a and in the interior of the cyclone housing 2, 3 a second ramp 1 1 a through which the fluid stream is diverted are provided.
- the first ramp 10 is arranged at the upper wall 9 of the feed channel 7 and has the shape of a wedge.
- the second ramp 1 1 a is arranged at the housing cap 5 and has the same height as the first ramp 10a.
- the ramps 10a, 1 1 a are connected via a, for example cuboidal, connecting element 14, wherein between them, in particular, no gap or platform/shoulder is provided.
- the first ramp 10a in the interior of the feed channel 7 extends along about one third of the length of the feed channel 7 and rests against the inner wall 8 of the feed channel 7.
- the height of the ramp 10a is about 45 % of the height of the feed channel 7 (based on the free inner cross-section of the feed channel 7).
- the width of the ramp 10a is about 50 % of the width of the feed channel 7 (cf. Fig. 1 b).
- the first ramp 10a begins starting from the second end of the feed channel 7 in the second half of the feed channel 7 and extends up to the first end of the feed channel 7 at the inlet opening 6 of the cyclone housing 2, 3.
- the second ramp 1 1 a is arranged such that it rests against the outer wall 13 of the cylindrical housing part 2 of the cyclone 1 .
- the ramp 1 1 a has a curved design so that it is adjusted to the round shape of the outer wall 13 of the cylindrical housing part 2 of the cyclone 1 .
- a gas stream for example from a blast furnace, together with solid particles contained therein is fed into the feed channel 7.
- the gas stream flows along the feed channel 7 into the direction of the cyclone housing 2, 3 (in the view of Fig. 1 a from the left side to the right side), and in the upper region of the feed channel 7 it is deflected downwards at the first ramp 10a so that it enters the cylindrical housing part 2 in a distance to the housing cap 5 which at least corresponds to the height of the first ramp 10a.
- a part of the gas and some particles are provided with a velocity component in downward direction which supports the transport of the particles into the direction of the discharge port and prevents that the particles enter the low energy zone 15 in the upper region of the cyclone 1 near the housing cap 5.
- a circular movement is initiated which through the centrifu- gal forces results in the separation of the particles from the gas stream. Particles which nevertheless have entered the low energy zone 15 near the housing cap 5 circulate around the dip tube 12.
- FIG. 2a to 2c show a second embodiment of the invention in views which are equivalent to the figures 1 a to 1 c.
- the same reference signs (optionally with indices a-f for the first to sixth embodiments) are used and reference is made to their preceding description.
- the embodiment of the Fig. 2a to 2c is characterized by an alternative arrange- ment of the ramp.
- the first ramp 10b in the feed channel 7 already reaches its maximum height before the inlet opening 6 of the cyclone housing 2, 3.
- the ramp 10b extends in a, preferably cuboidal, section 16 with constant height up to the inlet opening 6.
- the length of the first ramp 10b is about 60 % of the length of the feed channel 7.
- the second ramp 1 1 b does not differ from the second ramp 1 1 a of the first embodiment of the Fig. 1 a to 1 c.
- the ramp 10c extends along the whole width of the feed channel 7 (cf. Fig. 3b).
- the characteristic profile of the height of the ramp 10c is identical with that of ramp 10b according to the embodiment of the Fig. 2a to 2c.
- the ramp 10d is char- acterized by a particularly small design so that its width corresponds only to one third of the width of the feed channel 7. Apart from that, the ramp 10d has a similar design as the ramp 10b according to the second embodiment.
- the ramp 10e and also the ramp 1 1 e have a design of a concave ramp.
- the concave ramps 10e, 1 1 e do not have a constant slope, but a slope which increases into the direction of the inlet opening 6 in the housing 2, 3 each.
- the lengths and the widths of the ramps 10, 1 1 correspond to those of the embodiment of the Fig. 1 a to 1 c.
- the cyclone 1 only comprises one ramp 10f in the feed channel 7, while the second ramp 1 1 at the housing cap 5 was omitted.
- the cyclone 1 is characterized by a geometric displacement between feed channel 7 and housing cap 5. Accordingly, also the ramps 10g, 1 1 g may be characterized by a geometric displacement to each other, which is a vertical displacement here.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Cyclones (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202016102924.4U DE202016102924U1 (en) | 2016-06-01 | 2016-06-01 | Cyclone for separating particles from a fluid |
PCT/EP2017/063113 WO2017207606A1 (en) | 2016-06-01 | 2017-05-31 | Cyclone for the separation of particles from a fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3463674A1 true EP3463674A1 (en) | 2019-04-10 |
EP3463674B1 EP3463674B1 (en) | 2020-03-04 |
Family
ID=58873826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17726940.4A Active EP3463674B1 (en) | 2016-06-01 | 2017-05-31 | Cyclone for the separation of particles from a fluid |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3463674B1 (en) |
CN (1) | CN109311035B (en) |
AU (1) | AU2017272681B2 (en) |
BR (1) | BR112018074331B1 (en) |
CA (1) | CA3025587C (en) |
DE (1) | DE202016102924U1 (en) |
UA (1) | UA122721C2 (en) |
WO (1) | WO2017207606A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2411186A (en) * | 1941-11-27 | 1946-11-19 | Hydrojet Corp | Process for releasing gases from liquids |
FI56037C (en) * | 1975-10-30 | 1979-11-12 | Enso Gutzeit Oy | HYDROCYCLON |
SE406713B (en) * | 1977-07-18 | 1979-02-26 | Celleco Ab | HYDROCYCLOSE SEPARATOR WITH SLIDES IN THE CIRCULAR CYLINDRICAL PART OF THE SEPARATION CHAMBER |
JPS6230568A (en) * | 1985-04-08 | 1987-02-09 | Chichibu Cement Co Ltd | Cyclone separator |
GB2202468A (en) * | 1987-03-25 | 1988-09-28 | Smidth & Co As F L | Cyclone |
FR2788453B1 (en) | 1999-01-18 | 2001-02-23 | Alstom | SMOKE INLET SHEATH IN A CYCLONE SEPARATOR |
KR100444552B1 (en) * | 2001-09-13 | 2004-08-16 | 삼성광주전자 주식회사 | Cyclone dust collector for vacuum cleaner |
CL2003001757A1 (en) * | 2003-08-29 | 2005-01-21 | Vulco Sa | INPUT HEAD FOR HYDROCICLON, IN WHICH THE HEIGHT OF THE VORTICE SEARCH, IS A FRACTION OF THE HEIGHT OF THE POWER INPUT, WHICH IS RECTANGULAR, WHERE SUCH ENTRY HAS A FIRST SECTOR FORMING A HORIZONTAL VOLUTE, AND A SEQUENCE |
-
2016
- 2016-06-01 DE DE202016102924.4U patent/DE202016102924U1/en active Active
-
2017
- 2017-05-31 CA CA3025587A patent/CA3025587C/en active Active
- 2017-05-31 CN CN201780037821.4A patent/CN109311035B/en active Active
- 2017-05-31 WO PCT/EP2017/063113 patent/WO2017207606A1/en active Search and Examination
- 2017-05-31 EP EP17726940.4A patent/EP3463674B1/en active Active
- 2017-05-31 UA UAA201812514A patent/UA122721C2/en unknown
- 2017-05-31 BR BR112018074331-3A patent/BR112018074331B1/en active IP Right Grant
- 2017-05-31 AU AU2017272681A patent/AU2017272681B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3463674B1 (en) | 2020-03-04 |
AU2017272681B2 (en) | 2020-04-30 |
CA3025587C (en) | 2024-03-26 |
BR112018074331A2 (en) | 2019-03-06 |
CA3025587A1 (en) | 2017-12-07 |
BR112018074331B1 (en) | 2022-11-01 |
CN109311035B (en) | 2021-05-28 |
UA122721C2 (en) | 2020-12-28 |
WO2017207606A1 (en) | 2017-12-07 |
CN109311035A (en) | 2019-02-05 |
DE202016102924U1 (en) | 2017-09-04 |
AU2017272681A1 (en) | 2019-01-17 |
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