CN103145216B - Two-stage rotational-flow air flotation separator - Google Patents
Two-stage rotational-flow air flotation separator Download PDFInfo
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- CN103145216B CN103145216B CN201310087137.0A CN201310087137A CN103145216B CN 103145216 B CN103145216 B CN 103145216B CN 201310087137 A CN201310087137 A CN 201310087137A CN 103145216 B CN103145216 B CN 103145216B
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- tank body
- water inlet
- inner core
- tank
- level
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- 238000005188 flotation Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000010865 sewage Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 4
- 238000009300 dissolved air flotation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000024287 Areas Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
Abstract
The invention discloses a two-stage rotational-flow air flotation separator, comprising a tank, wherein the tank is provided with a first-stage water outlet and at least one first-stage water inlet; an inner barrel is installed in the tank; an opening is formed at the upper end of the inner barrel; at least one second-stage water inlet is formed in the lower side of the inner barrel; the first-stage water outlet of the tank is communicated with the second-stage water inlet of the inner barrel via a pipeline; a second-stage dross outlet is formed at a position corresponding to the opening of the inner barrel, at the upper end of the tank; a clapboard is installed between the inner wall of the tank and the outer wall of the inner barrel; and the clapboard is used for dividing a space between the inner wall of the tank and the outer wall of the inner barrel into an upper part and a lower part. The two-stage rotational-flow air flotation separator disclosed by the invention is compact in structure, reduced in equipment volume and floor area, good in oil removal effect and suspended particle removal effect, suitable for the application fields of various oily water separation, suspended matter separation, and the like, and especially suitable for treatment for oily sewage in the petrochemical industry.
Description
Technical field
The present invention relates to a kind of twin-stage cyclone gas flotation separator.
Background technology
Petroleum and petrochemical sector can produce a large amount of oily(waste)waters in the production processes such as oil production, processing, crude oil refinement, and conventional oil-water separation method mainly contains: the methods such as gravity settling separation, air supporting choosing, hydrocyclone separation technology, filtering separation.These methods have relative merits and the scope of application separately, and wherein dissolved air flotation technology is due to technical maturity, applied widely, less investment, and the low grade of operation and maintenance cost has been widely used in oil, chemical industry oily water treatment.
Tradition dissolved air flotation technology, the residence time substantially between 15 minutes～30 minutes, due to overstand, causes that equipment volume is large, floor space is larger, limit its range of application, particularly facility compact type has been required more strictly to survey place (as FPSO, employing platform etc.).Next be traditional dissolved air flotation efficiency generally in 80% left and right, more and more cannot meet the requirement of high oil removal efficiency.
Hydrocyclone is to rely on oil droplet to separate with sewage density difference, and when oil droplet density more and more approaches sewage density, droplet diameter has in less situation, and swirler deoiling effect can decline to a great extent, and cannot meet oily water treatment requirement; Hydrocyclone is had relatively high expectations, need be increased power-equipment for low pressure operating mode water inlet pressure simultaneously, and increase investment and use cost, be exactly that the anti-fluctuation of hydrocyclone is little again, adaptability is poor.
Summary of the invention
The object of the invention is to provides a kind of structure compacter for the deficiencies in the prior art, when having reduced equipment volume and floor space, obtain better oil removing and the twin-stage cyclone gas flotation separator except suspended particulate effect, be applicable to the Application Areass such as various sump oil water separation, suspended substance separation, be specially adapted to the processing of petroleum chemical industry oily(waste)water.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of twin-stage cyclone gas flotation separator, comprise tank body, described tank body is provided with one-level water outlet and at least one one-level water inlet, in described tank body, inner core is installed, described inner core upper end is provided with opening, described inner core downside is provided with at least one secondary water inlet, the one-level water outlet of described tank body is communicated with the secondary water inlet of described inner core by pipeline, between described inner tank wall and described inner tank theca, dividing plate is installed, the space between described inner tank wall and described inner tank theca is divided into independent and sealing secondary floatation district, top and lower departmental level flotation area up and down by described dividing plate, the one-level water inlet of described tank body is arranged on described one-level flotation area, the position of described tank body between downside and the described one-level water inlet of described dividing plate is provided with the outlet of one-level scum silica frost, described tank body is provided with secondary effluent mouth at the upside of described dividing plate, the position corresponding with described inner core opening, described tank body upper end is provided with the outlet of secondary scum silica frost.
Described inner core comprises the top section of falling loudspeaker, middle column body segment and bottom cone section from top to bottom successively, and the lower end of described inner core is provided with sewage draining exit, and described sewage draining exit is in communication with the outside.
Described tank body inner side is provided with annular oil trap near the position of described inner core upper end open.
Described one-level water inlet is arranged on position on described tank body and makes the inwall of the water that enters from described one-level water inlet and described tank body tangent, and described secondary water inlet is arranged on position on described inner core and makes the inwall of the water that enters from described secondary water inlet and described inner core tangent.
Owing to adopting said structure, make compared with original tank body, increase inner core in tank interior, make the spatial design of tank interior more reasonable, flow field is more stable, thereby it is larger under same intake pressure, to make sump oil water enter the centrifugal force of tank body, inner core also has advantages of same, and one-level water inlet and secondary water inlet and inner tank wall and inner core inwall tangent, tangent generation centrifugal force, the optimization of tangent position and water inlet caliber can produce larger centrifugal force; And secondary water inlet is that the relative tank body of inner core radius is less with the reason of the larger centrifugal force of the tangent generation of inner core, the flow field of generation is more stable, thereby centrifugal force is just larger.
In sum, though increase inner core make be in tank body or inner core in flow field more stable, thereby the centrifugal force that firsts and seconds produces all can increase, improve separation efficiency, thereby shorten hydraulic detention time in cyclone air-flotation device, structure is compacter, when having reduced equipment volume and floor space, has obtained better oil removing and has removed suspended particulate effect.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of another embodiment of the present invention;
Fig. 3 (a) is one-level sewage water inlet and B-grade sewage water inlet and tank body mode of connection one;
Fig. 3 (b) is one-level sewage water inlet and B-grade sewage water inlet and tank body mode of connection two;
Fig. 3 (c) is one-level sewage water inlet and B-grade sewage water inlet and tank body mode of connection three;
Fig. 3 (d) is one-level sewage water inlet and B-grade sewage water inlet and tank body mode of connection four;
Embodiment
Below in conjunction with accompanying drawing, further describe the embodiment of this patent.
As shown in Figure 1, a kind of twin-stage cyclone gas flotation separator, comprises tank body 1, one-level water inlet 2, inner core 3, dividing plate 4, one-level water out 5, secondary water inlet 6, secondary effluent mouth 7, one-level scum silica frost outlet 8, the outlet 9 of secondary scum silica frost and sewage draining exit 10.Described inner core 3 and tank body 1 concentric setting, tank body 1 is divided into flash trapping stage district and the second-order separation district by inner core 3, between described tank body 1 inwall and described inner core 3 outer walls, dividing plate 4 is installed, the space between described tank body 1 inwall and described inner core 3 outer walls is divided into up and down lower departmental level flotation area 21 and secondary floatation district, top 22 independent and sealing by described dividing plate 4, described dividing plate 4 is arranged on apart from the position of tank body 1 bottom 1/3～1/2 tank body 1 height, and described inner core 3 is made up of column body segment 31, the top section of falling loudspeaker 32 and bottom cone section 33 in the middle of inner core.
As shown in Figure 2, tank body 1 inner side is provided with annular oil trap 11 near the position of described inner core 3 upper end open, makes to separate the gas producing and discharges from secondary scum silica frost outlet 9, separates the oil producing and enters oil trap 11, discharges from oil discharge outlet 10.
One-level water inlet 2 and secondary water inlet 6 can select single tube tangentially to enter with two-tube to become 180 to spend respectively with tank body 1 or inner core 3 is tangent enters.Specifically, as described in Fig. 3 (a), tank body 1 is provided with an one-level water inlet 2, inner core 3 is provided with a secondary water inlet 6, described one-level water inlet 2 is arranged on position on described tank body 1 and makes the inwall of the water that enters from described one-level water inlet 2 and described tank body 1 tangent, and described secondary water inlet 6 is arranged on position on described inner core 3 and makes the inwall of the water that enters from described secondary water inlet 6 and described inner core 2 tangent; As described in Fig. 3 (b), tank body 1 is provided with two one-level water inlets 2, inner core 3 is provided with two secondary water inlets 6, one-level water inlet 2 and secondary water inlet 6 are evenly laid, two one-level water inlets 2 are arranged on tank body 1 both sides and the water that enters from two water inlets makes the water tank body 1 flow towards a direction, and two secondary water inlets 2 are arranged on inner core 3 both sides and the water that enters from two water inlets makes the water inner core 3 flow towards a direction; As described in Fig. 3 (c), tank body 1 is provided with two one-level water inlets 2, and inner core 3 is provided with a secondary water inlet 6; As described in Fig. 3 (d), tank body 1 is provided with an one-level water inlet 2, and inner core 3 is provided with two secondary water inlets 6.
Principle of work: after the gas and liquid mixture that carries a large amount of microbubbles that oily(waste)water enters with mixed solution sewage inlet pipe 111 through mixing tank 112 mixes, tangentially enter in the one-level flotation area 21 in tank body 1 by one-level water inlet 2, form eddy flow, microbubble carries oil droplet progressively to tank body 1 one-level flotation area 21 intermediary movementses and rise to liquid-gas interface, Bubble, oil droplet forms scum silica frost and discharges through one-level scum silica frost relief outlet 8.Move downward with the sewage after this flotation simultaneously, by one-level water out 5, after mixing tank 121 mixes with the gas and liquid mixture that carries a large amount of microbubbles entering by mixed solution water inlet pipe 122, tangentially enter in the secondary floatation district 22 in inner core 3 by secondary water inlet 6, form eddy flow, because dividing plate seals one-level flotation area 21 and secondary floatation district 22 completely, and described dividing plate 4 is arranged on apart from the position of tank body 1 bottom 1/3～1/2 tank body 1 height, therefore the space of one-level flotation area 21 is less than secondary floatation district 22, therefore one-level flotation area 21 is higher than the pressure in secondary floatation district 22, therefore secondary floatation district 22 realizes injection by one-level flotation area 21 sewage pressures, microbubble carries oil droplet to the 22 region intermediate motions of inner core secondary floatation district, and rise to secondary floatation separated region 132 liquid levels, Bubble, oil droplet forms scum silica frost and discharges through secondary scum silica frost relief outlet 9, discharge through secondary effluent mouth 7 downwards with the sewage after this flotation simultaneously.
Compared with prior art this novel twin-stage cyclone air-flotation device, generation centrifugal intensity is larger, interior flow field is organized more rationally, structure is more compact, and equipment volume is little, floor space is few, can obtain better oil removing and desanding effect simultaneously.
These are only embodiments of the invention, not with restriction the present invention.All any amendments of doing within principle of the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a twin-stage cyclone gas flotation separator, comprise tank body, described tank body is provided with one-level water outlet and at least one one-level water inlet, it is characterized in that, in described tank body, inner core is installed, described inner core upper end is provided with opening, described inner core downside is provided with at least one secondary water inlet, the one-level water outlet of described tank body is communicated with the secondary water inlet of described inner core by pipeline, between described inner tank wall and described inner tank theca, dividing plate is installed, described dividing plate is arranged on apart from the position of tank base 1/3～1/2 tank body height, the space between described inner tank wall and described inner tank theca is divided into up and down secondary floatation district, top and lower departmental level flotation area independent and sealing by described dividing plate, the one-level water inlet of described tank body is arranged on described one-level flotation area, the position of described tank body between downside and the described one-level water inlet of described dividing plate is provided with the outlet of one-level scum silica frost, described tank body is provided with secondary effluent mouth at the upside of described dividing plate, the position corresponding with described inner core opening, described tank body upper end is provided with the outlet of secondary scum silica frost, described one-level water inlet is arranged on position on described tank body and makes the inwall of the water that enters from described one-level water inlet and described tank body tangent, described secondary water inlet is arranged on position on described inner core and makes the inwall of the water that enters from described secondary water inlet and described inner core tangent.
2. twin-stage cyclone gas flotation separator according to claim 1, is characterized in that, described inner core comprises the top section of falling loudspeaker, middle column body segment and bottom cone section from top to bottom successively, and the lower end of described inner core is provided with sewage draining exit, and described sewage draining exit is in communication with the outside.
3. twin-stage cyclone gas flotation separator according to claim 2, is characterized in that, described tank body inner side is provided with annular oil trap near the position of described inner core upper end open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087137.0A CN103145216B (en) | 2013-03-19 | 2013-03-19 | Two-stage rotational-flow air flotation separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087137.0A CN103145216B (en) | 2013-03-19 | 2013-03-19 | Two-stage rotational-flow air flotation separator |
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| Publication Number | Publication Date |
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| CN103145216A CN103145216A (en) | 2013-06-12 |
| CN103145216B true CN103145216B (en) | 2014-07-30 |
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| CN201310087137.0A Expired - Fee Related CN103145216B (en) | 2013-03-19 | 2013-03-19 | Two-stage rotational-flow air flotation separator |
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| CN110284449A (en) * | 2019-07-05 | 2019-09-27 | 郑州宇通重工有限公司 | A kind of sweeping machine suction pipe preventing clogging up device |
| CN111498944A (en) * | 2020-04-24 | 2020-08-07 | 克拉玛依市三达新技术股份有限公司 | Device and method for treating high-oil-content sewage by physical method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU664931A1 (en) * | 1976-01-28 | 1979-05-30 | Московский Институт Химического Машиностроения | Device for purifying waste water |
| CN101385910A (en) * | 2008-10-17 | 2009-03-18 | 扬州澄露环境工程有限公司 | Pressure type oil-contaminated water air-float machine |
| RU2393119C1 (en) * | 2008-12-01 | 2010-06-27 | Государственное образовательное учреждение высшего профессионального образования Дальневосточный государственный технический университет (ДВПИ им. В.В. Куйбышева) | Liquid purification method |
| CN201648141U (en) * | 2010-03-26 | 2010-11-24 | 北京石油化工学院 | Multiphase separating system for oil-containing wastewater treatment |
| CN203159348U (en) * | 2013-03-19 | 2013-08-28 | 湖南中科富邦科技有限责任公司 | Two-stage cyclone air flotation separator |
-
2013
- 2013-03-19 CN CN201310087137.0A patent/CN103145216B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU664931A1 (en) * | 1976-01-28 | 1979-05-30 | Московский Институт Химического Машиностроения | Device for purifying waste water |
| CN101385910A (en) * | 2008-10-17 | 2009-03-18 | 扬州澄露环境工程有限公司 | Pressure type oil-contaminated water air-float machine |
| RU2393119C1 (en) * | 2008-12-01 | 2010-06-27 | Государственное образовательное учреждение высшего профессионального образования Дальневосточный государственный технический университет (ДВПИ им. В.В. Куйбышева) | Liquid purification method |
| CN201648141U (en) * | 2010-03-26 | 2010-11-24 | 北京石油化工学院 | Multiphase separating system for oil-containing wastewater treatment |
| CN203159348U (en) * | 2013-03-19 | 2013-08-28 | 湖南中科富邦科技有限责任公司 | Two-stage cyclone air flotation separator |
Non-Patent Citations (2)
| Title |
|---|
| 附图1. |
| 附图1-6. |
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