CN201157703Y - Compact type rotary flow air float separating device for oily wastewater treatment - Google Patents
Compact type rotary flow air float separating device for oily wastewater treatment Download PDFInfo
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- CN201157703Y CN201157703Y CNU200720305624XU CN200720305624U CN201157703Y CN 201157703 Y CN201157703 Y CN 201157703Y CN U200720305624X U CNU200720305624X U CN U200720305624XU CN 200720305624 U CN200720305624 U CN 200720305624U CN 201157703 Y CN201157703 Y CN 201157703Y
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Abstract
The utility model relates to compact rotary flow flotation separation equipment used for oily waste water treatment. The rotary flow flotation separation equipment mainly comprises a rotary flow flotation composite can (1), a circulating gas component (2), a gas liquid mixture component (3) and a circulating recirculation water component (4), wherein, the rotary flow flotation composite can (1) is a key part and is composed of a cylindrical outer tube body (11), an oval upper end socket (12) and an oval lower end socket (13), wherein, the rotary flow flotation composite can (1) is mainly provided with an inner tube (14) and an inlet guiding piece (31) and is butted with a tangential inlet pipe (34), and the bottom is respectively provided with a pipeline (23) for gas circulating in the tube, a water pipeline (42) for gas recirculation in the tube, an air flotation ejector (43), an air flotation baffle plate (432) and a horizontal circular plate (133). The cylindrical outer tube body (11), the circulating gas component (2), the gas liquid mixture component (3) and the circulating recirculation water component (4) are connected to form the entire rotary flow flotation separation equipment. The rotary flow flotation separation equipment has the advantages that the structure is compact and simple, the working efficiency is high, the occupied area is small, the construction cost is low, the operation and the maintenance are simple and easy, and the rotary flow flotation separation equipment is especially suitable for the purification treatment of the oily waste water containing tiny dispersed oil drops.
Description
Technical field
The utility model relates to the equipment of oil in a kind of oily waste water, gas, the heterogeneous separating treatment of water, especially contains the purified treatment separation equipment of the oily waste water of small dispersed oil droplets.
Background technology
Oily waste water in Petroleum and Petrochemical Industry production, urban life is medium often runs into, and implements the primary Processing tasks that water-oil separating faces often with the oil content of removing wherein.The method of water-oil separating is a lot, and processing method commonly used has settling methods, centrifugal settling method, air supporting method, filtration method, absorption method, membrane separation process etc.
Various processing methods all have separately pluses and minuses and the specific scope of application.Air supporting method technical maturity, with low cost, treating capacity is big, be widely used in the processing of waste water such as oil field, petrochemical industry, food oil production at present.Its major defect is that oil slick is difficult, and the flotation time of staying is longer; When treating capacity is big, must build large-scale airfloat equipment, floor space is big, the investment cost height.Cyclone separation process based on hydrocyclone has obtained application more and more widely in oily waste water is handled since the nineties in 20th century, the density contrast that utilizes oil, water two-phase by cyclone produce centrifugal force with oil, moisture from, have advantages such as compact conformation, floor space is little, operation maintenance is simple, but the oil bead diameter scope that this method can be removed is not less than 20 μ m.
In order to overcome the shortcoming of traditional air supporting and eddy flow, further strengthen the oil-water separation of air supporting method, many in recent years researchers or even relevant water treatment facilities manufacturer have all proposed viewpoint that the dissolved air flotation technology is combined with cyclone separation process, have obtained some substantial achievements in research.
At present domestic cyclone air-flotation combination technique only is confined to the dissolved air flotation technology separated with liquid-liquid to combine with the hydrocyclone monomer carry out water-oil separating, is in the laboratory exploratory stage.Because the disposal ability of hydrocyclone monomer is very limited, when needs will many monomers in parallel and during at the suitable position injecting gas, the very trouble that just seems, so fettered its industrial applications.
The external combination technique of having released several air supportings and low-intensity eddy flow centrifugal force field in recent years, this technology have not only overcome defectives such as the disposal ability of domestic research existence is low, and have obtained certain effect in the processing application facet of petroleum industry oily waste water.Therefore, in following one period, the combination technique of air supporting and low-intensity eddy flow centrifugal force field will dominated the developing direction of air supporting eddy flow combined treatment technology.
In the U.S. Pat 7144503 of Norway M-I Epcon company application, set forth a kind of combined degassing and flotation tank, a cylindric inner core and a helical form inlet guide card are arranged in jar, oily waste water enters from the tangential inlet on jar top and forms eddy flow the jar, and bubble is separated out from water simultaneously.Bubble and oil droplet are depressed into inner tube wall under the effect of eddy flow, the two rises to tank deck after adhering to, and discharge by the oil gas vent of tank deck.According to the patentee's, this device is better to the treatment effect of oily waste water, and cost and maintenance cost are very low, are applicable to that relatively the storage of the oil production platforms of operation on the sea or Floating Production unloads relatively stricter field use such as oil tanker (FPSO) space requirement of etc.ing.But from the appended structure chart of this patent, rise to some problems that exist that efflux of the oil of jar inner top and bubble scum silica frost.Especially the oil production platforms of operation on the sea or FPSO can be in vibrating state because of the effect of ripple, wave, stream, this moment, a jar inner liquid level was difficult to keep stable, thereby cause the water content in the outer gentle bubble scum silica frost of oil extraction of this device too high, thereby had a strong impact on separating effect.
In the U.S. Pat 7157007 of U.S. Natco group application, a kind of oil, gas, water three-phase separating device have been set forth; this device is a vertical-type air-flotation knockout drum; mainly be divided into upper, middle and lower-ranking, utilized rotational flow separation, coarse and air supporting isolation technics respectively.The centre position that is positioned at jar top is equipped with an inner core, and oily waste water enters into inner core from tangential inlet and produces eddy flow, carries out water-oil separating in inner core, and oil phase directly enters the oil skimming bucket.The current that flow out from interior tube bottom are when being positioned at the coalescent layer at jar middle part, and the oil droplet of dispersion is grown up in this gathering.Part bulky grain oil droplet can be under buoyancy, overcome self gravitation and the main body following upwards buoyance lift that begins to flowing mutually, from and removed a part of oil.In the jar bottom injector is installed, the gas of utilization jar inner top and backflow are purified waste water and after the shear-mixed, produce micro-bubble in injectors, the oily waste water that gets off from coalescent laminar flow is carried out air supporting handle.But the periodic cleaning problem of coalescent layer bothers very much, and the internal structure of complete equipment is very complicated simultaneously, and the cost of processing and manufacturing is higher.
In view of the foregoing, be necessary further to develop the deficiency that novel compact air supporting vortex separation system overcomes above-mentioned oily-water seperating equipment.
Summary of the invention
According to background technology, the purpose of this utility model is to avoid above-mentioned shortcoming, provide a kind of monotechnics to combine with eddy flow and two kinds of water-oil separatings of air supporting, dispersed oil droplets in the water can efficiently be separated, reach the compact cyclone air-flotation separation equipment for processing oily wastewater of purified treatment purpose.
To achieve these goals, the utility model is achieved through the following technical solutions:
A kind of compact cyclone air-flotation separation equipment for processing oily wastewater, mainly by cyclone air-flotation composite can (1), recyclegas assembly (2), gas-liquid mixed assembly (3) and circulating reflux water assembly (4) are formed, wherein: by cylindrical outer cylinder body (11), oval upper cover (12) and oval low head (13) are formed the tank body of cyclone air-flotation composite can (1), recyclegas outlet (21) wherein is installed on upper cover (12), oil-out flange (121) and gas safety valve (126), oil-out flange (121) is connected with interior outstanding pipe (123) in the inner core (14), afterbody of outstanding pipe (123) is provided with stator (124) and goes out oil groove (125) in it, the bottom of outer cylinder body (11) is equiped with circulating reflux water inlet (41), and be connected with recirculation water pipeline (42) in the tube, the end of recirculation water pipeline (42) is connected with air supporting injector (43) in its tube, the middle and upper part of air supporting injector (43) is provided with injector air inlet (431), the below is provided with discoid air supporting baffle plate (432), lower surface (5～10) mm apart from air supporting injector (43), in the low head (13) of outer cylinder body (11), the top of low head delivery port (131) is provided with a horizontal plectane (133), and and low head (13) between form a circular water stream channel (134), be provided with filter screen (135) around the horizontal plectane (133), greasy filth outlet (132) also is installed on low head (13);
Inner core (14) is made up of spherical crown shape skimming tank (141) and cylindric oil tube (142), zigzag downflow weir (143) is made in the upper end of its spherical crown shape skimming tank (141), the bottom of inner core (14) and interior outstanding pipe (123) are affixed, the distance H between the top edge of cylindric outer cylinder body (11) and spherical crown shape skimming tank (141) top edge
1=50mm, inner core (14) bottom margin is apart from the top edge distance H of outer cylinder body (11)
2=(1/3～3/5) H;
Recycle gas line (24) is connected with gas circulation line (23) in recyclegas outlet (21), recyclegas inlet (22), the tube, and gas circulation pipeline (23) is connected the common recyclegas assembly (2) of forming in the tube with the air inlet (431) of air supporting injector (43);
Top in outer cylinder body (11), being provided with inlet guide card (31) is fixed on the inwall of outer cylinder body (11) around inner core (14), its guide card initiating terminal (32) is connected with the terminal smooth transition of the inlet tube of tangential inlet pipe (34), inlet guide card (31) is provided with along barrel circumferencial direction helical form, lead angle is 5 °～15 °, inlet guide card (31) is 210 °～330 ° with the angle of circumference of outer cylinder body (11) inwall intersecting lens projection on horizontal plane, should leave certain radial clearance between the outer surface of inlet guide card (31) and inner core (14), the inlet (37) of tangential inlet pipe (34) is connected with gas-liquid mixing pump (36) by pipeline (35), thus inlet guide card (31), tangential inlet pipe (34), pipeline (35) and gas-liquid mixing pump (36) are formed gas-liquid mixed assembly (3) jointly;
By water inlet pipe (441), three-way pipe (442) and drainpipe (443) connect and compose intake-discharge pipe (44), and the water inlet (444) by intake-discharge pipe (44) is connected with low head delivery port (131), circulating reflux water pump (45) is connected air supporting injector (43) by tube exteenal reflux water lines (46) with circulating reflux water inlet (41), discoid air supporting baffle plate (432), recirculation water pipeline (42) in the tube, circulating reflux water inlet (41), tube exteenal reflux water lines (46), circulating reflux water pump (45) and intake-discharge pipe (44) are formed water pumparound assembly (4) jointly.
Owing to adopted technique scheme, the utlity model has following advantage and effect:
1, the present invention has successfully realized the combination of eddy flow and two kinds of water-oil separating monotechnicss of air supporting, can separate tiny oil droplets, operating efficiency improves greatly, device structure body compactness, simple, the version exquisiteness is specially adapted to contain the purified treatment of the oily waste water of small dispersed oil droplets.
2, the present invention is stronger to the adaptability of handling flow and interior oil-containing thereof, air content fluctuation, has bigger operating flexibility.
3, structural cost of the present invention is cheap, and it is simple and easy to use installation and maintenance to repair.
Description of drawings
Fig. 1 is a structure collectivity cross-sectional schematic of the present invention
Fig. 2 is the A-A cross-sectional schematic of Fig. 1 of the present invention
Fig. 3 is the B-B cross-sectional schematic of Fig. 1 of the present invention
Fig. 4 is the C-C cross-sectional schematic of Fig. 1 of the present invention
Fig. 5 is an air supporting injector cross-sectional schematic of the present invention
Fig. 6 is another embodiment of the present invention general structure cross-sectional schematic
Fig. 7 is a cyclone air-flotation composite can series system structural representation of the present invention
Fig. 8 is a cyclone air-flotation composite can parallel way structural representation of the present invention
The specific embodiment
By a kind of compact cyclone air-flotation separation equipment for processing oily wastewater of the present invention Fig. 1 to Fig. 4 illustrate, mainly by cyclone air-flotation composite can 1, recyclegas assembly 2, gas-liquid mixed assembly 3 and circulating reflux water assembly 4 are formed, wherein: by cylindrical outer cylinder body 11, oval upper cover 12 and oval low head 13 are formed the tank body of cyclone air-flotation composite can 1, recyclegas outlet 21 wherein is installed on upper cover 12, oil-out flange 121 and gas safety valve 126, oil-out flange 121 is connected with interior outstanding pipe 123 in the inner core 14, afterbody of outstanding pipe 123 is provided with stator 124 and goes out oil groove 125 in it, the bottom of outer cylinder body 11 is equiped with circulating reflux water inlet 41, and be connected with recirculation water pipeline 42 in the tube, the end of recirculation water pipeline 42 is connected with air supporting injector 43 in the tube, the middle and upper part of air supporting injector 43 is provided with injector air inlet 431, the below is provided with discoid air supporting baffle plate 432, apart from air supporting injector 43 lower ends 5～10mm, in the low head 13 of outer cylinder body 11, the top of low head delivery port 131 is provided with a horizontal plectane 133, and and low head 13 between form a circular water stream channel 134, be provided with filter screen 135 around the horizontal plectane 133, greasy filth outlet 132 also is installed on low head 13;
Inner core 14 is made up of spherical crown shape skimming tank 141 and cylindric oil tube 142, zigzag downflow weir 143 is made in the upper end of its spherical crown shape skimming tank 141, the bottom of inner core 14 and interior outstanding pipe 123 are affixed, the distance H between the top edge of cylindric outer cylinder body 11 and spherical crown shape skimming tank 141 top edges
1=50mm, inner core 14 bottom margins are apart from the top edge distance H of outer cylinder body 11
2=(1/3～3/5) H;
Top at outer cylinder body 11, being provided with inlet guide card 31 is fixed on the inwall of outer cylinder body 11 around inner core 14, its guide card initiating terminal 32 is connected with the terminal smooth transition of the inlet tube of tangential inlet pipe 34, inlet guide card 31 is provided with along barrel circumferencial direction helical form, lead angle is 5 °～15 °, inlet guide card 31 is 210 °～330 ° with the angle of circumference of outer cylinder body 11 inwall intersecting lens projections on horizontal plane, should leave certain radial clearance between the outer surface of inlet guide card 31 and inner core 14, the inlet 37 of tangential inlet pipe 34 is connected with gas-liquid mixing pump 36 by pipeline 35, thus inlet guide card 31, tangential inlet pipe 34, pipeline 35 and the gas-liquid mixing pump 36 common gas-liquid mixed assemblies 3 of forming;
By water inlet pipe 441, three-way pipe 442 and drainpipe 443 connect and compose intake-discharge pipe 44, and the water inlet 444 by intake-discharge pipe 44 is connected with low head delivery port 131, circulating reflux water pump 45 is connected with circulating reflux water inlet 41 by tube exteenal reflux water lines 46, recirculation water pipeline 42, circulating reflux water inlet 41, tube exteenal reflux water lines 46, circulating reflux water pump 45 and the intake-discharge pipe 44 common water pumparound assemblies 4 of forming in air supporting injector 43, discoid air supporting baffle plate 432, the tube.
Know that again the eddy flow centrifugal intensity that solution-airmixture produces in cyclone air-flotation composite can 1 is also very big to the influence of separating property, desirable centrifugal intensity scope is 15～30.
Gas content in the cyclone air-flotation composite can 1 also will remain on a suitable scope, and desirable gas liquid ratio is 9%～18%.
The bubble diameter scope that generally requires air supporting injector 43 to produce is 100 μ m～300 μ m.
Other knows, at first utilize gas-liquid mixing pump 36 limits to draw water, the limit is air-breathing, in pump with oily waste water and gas vigorous stirring, shear-mixed becomes the homogeneous mixture of oily waste water-micro-bubble, increased the adhesion chance of dispersed oil droplets and micro-bubble, and then entered in the outer cylinder body 11, in jar, formed eddy flow on the screw via inlet guide card 31 by tangential inlet pipe 34.
Gas-liquid mixture fluid is in the jar inward turning then produce centrifugal force, and the water that density is bigger moves to the jar inwall, and radially relative migration then takes place in the middle of jar for oil droplet, the light components such as micro-bubble that are stained with oil droplet, the outer wall near zone of inner core 14 in arriving jar.Radial migration speed owing to dispersed oil droplets and micro-bubble in this process there are differences, and the radially interior migration velocity of micro-bubble is relatively large, thereby has increased the chance of the two contact, has improved the adhesion speed of micro-bubble and tiny oil droplets.Because near bubble-oil droplet adherend that the density of bubble-oil droplet adherend well below the density of water, therefore has been positioned at jar inner core 14 outer walls can slowly float.Most solution-air fluid-mixing then can the limit rotation, limit flow downward, the rotating centrifugal effect weakens gradually simultaneously, still has part bubble-oil droplet adherend and slowly float in this process.In order further to strengthen the dissolved air flotation effect, air supporting injector 43 by lower central position installation in the jar, circulating reflux water pump 45 is purified waste water circulating reflux to the middle and upper part of air supporting injector with a part, meanwhile air supporting injector 43 sucks gas from tank deck, gas is sheared in air supporting injector 43 and is broken into micro-bubble, under the mating reaction of discoid air supporting baffle plate 432, the bubble that contains of air supporting injector 43 outlet is purified waste water and is evenly distributed on the peripheral region of air supporting injector 43, strengthens the Disengagement zone thereby formed a complete air supporting.In jar in the bottom waste water remaining tiny oil droplets by with bubble adhesion, form bubble-oil droplet adherend once more and float to the tank top.By forward and backward twice air supporting process, finally produce one deck oil-water emulsion and bubble scum silica frost on tank level top, these air supporting products finally are pooled in the inner core 14 by zigzag downflow weir 142, continuously are rejected to outside the jar by oil-out flange 121.Gas phase part in jar is blended in the bubble scum silica frost, along with oil-water emulsion together outside oil-out flange 121 drain tanks, a part rises to tank deck, this part gas that rises to tank deck is divided into two kinds of discharge modes again, a part is discharged from gas safety valve 126, another part is inhaled into from recyclegas outlet 21, enters in the jar once more to be recycled as source of the gas.Treated water, is discharged from the delivery port 131 of pot bottom behind horizontal plectane 133 unhurried currents along the bottom of tank skin flow direction jar.In addition, at the bottom of sand and other heavier particles will drop to jar, collect the back by filter screen 135 and discharge by the greasy filth outlet 132 of pot bottom with the form of greasy filth.
The cross-sectional schematic of air supporting injector of the present invention is shown by Fig. 5, air supporting injector 43 is a Venturi nozzle in fact as seen from the figure, mainly by cylindrical section 433, air entry 434, contraction section 435, suction muffler 436, throat 437 and diffuser 438 are formed, wherein the top of air supporting injector 43 is connected with pipeline 42 in the tube by flange, import purifying waste water of having handled by circulating reflux water pump 45 from low head delivery port 131, air entry 434 is connected with gas circulation pipeline 23 in the tube, so that suck gas from recyclegas outlet 21.
By Fig. 6 another embodiment of the present invention is shown, the injector installation site that mainly is circulating reflux water assembly 4 is different, circulating reflux water pump 45 is extracted a part of purifying waste water of having handled out from low head delivery port 131, being positioned at two laterally disposed injectors of outer cylinder body 11 external bottoms 43 is connected with circulating reflux water pump 45 by tube exteenal reflux water lines 46, peripheral jet goes into to contain the current of micro-bubble in jar, wherein gas exports 21 along recycle gas line 24 by the recyclegas of outer cylinder body 11, enter into suction muffler 436 from air admission hole 47 and be sheared into micro-bubble, in the suction muffler 436 is the vacuum low-pressure district, the gas-liquid mixture that tangentially enters helical rotation in jar is carried out eddy flow to oily waste water, the air supporting combined treatment.
Compact cyclone air-flotation composite can 1 of the present utility model can be taked the working method of serial or parallel connection according to different performance requirements such as working flows.
Fig. 7 illustrates the working method of 3 compact cyclone air-flotation composite can series connection, the delivery port of previous composite can is as the water inlet of next composite can, the oil that oil-out is discharged is pooled in the same pipeline, and this working method can improve the separative efficiency of compact cyclone air-flotation composite can.
Fig. 8 illustrates the working method of 2 compact cyclone air-flotation composite cans parallel connection, the two independently carries out the purified treatment of oily waste water respectively, the water that oil that oil-out is discharged and delivery port are discharged is pooled to respectively in the same pipeline, and this working method can improve the disposal ability of compact cyclone air-flotation composite can.
In sum, the gas-liquid mixture of oily waste water enters the jar from the tangential inlet on tank body top, forms eddy flow in jar.Simultaneously, the bubble that is evenly distributed in the oily waste water under the gas-liquid mixed pumping action is separated out in jar, the oily waste water in the jar is carried out air supporting handle.Therefore, the light matter matter such as bubble that are stained with oil droplet move to tank deck; Current and solid phase particles etc. move at the bottom of jar than heavy substance, when arriving the injection air supporting zone of composite can bottom, by injector oily waste water are carried out secondary air supporting and handle.So oily waste water is equivalent to carry out a rotational flow separation and twice dissolved air flotation in jar, can reach satisfied treatment effect.
Claims (4)
1, a kind of compact cyclone air-flotation separation equipment for processing oily wastewater, mainly by cyclone air-flotation composite can (1), recyclegas assembly (2), gas-liquid mixed assembly (3) and circulating reflux water assembly (4) are formed, it is characterized in that: by cylindrical outer cylinder body (11), oval upper cover (12) and oval low head (13) are formed the tank body of cyclone air-flotation composite can (1), recyclegas outlet (21) wherein is installed on upper cover (12), oil-out flange (121) and gas safety valve (126), oil-out flange (121) is connected with interior outstanding pipe (123) in the inner core (14), afterbody of outstanding pipe (123) is provided with stator (124) and goes out oil groove (125) in it, the bottom of outer cylinder body (11) is equiped with circulating reflux water inlet (41), and be connected with recirculation water pipeline (42) in the tube, the end of recirculation water pipeline (42) is connected with air supporting injector (43) in its tube, the middle and upper part of air supporting injector (43) is provided with injector air inlet (431), the below is provided with discoid air supporting baffle plate (432), apart from air supporting injector (43) lower surface (5-10) mm, in the low head (13) of outer cylinder body (11), the top of low head delivery port (131) is provided with a horizontal plectane (133), and and low head (13) between form a circular water stream channel (134), be provided with filter screen (135) around the horizontal plectane (133), greasy filth outlet (132) also is installed on low head (13); Inner core (14) is made up of spherical crown shape skimming tank (141) and cylindric oil tube (142), zigzag downflow weir (143) is made in the upper end of its spherical crown shape skimming tank (141), the bottom of inner core (14) and interior outstanding pipe (123) are affixed, the distance H between the top edge of cylindric outer cylinder body (11) and spherical crown shape skimming tank (141) top edge
1=50mm, inner core (14) bottom margin is apart from the top edge distance H of outer cylinder body (11)
2=(1/2-2/3) H; Gas circulation pipeline (24) is connected with gas circulation line (23) in recyclegas outlet (21), recyclegas inlet (22), the tube, and gas circulation line (23) is connected the common recyclegas assembly (2) of forming in the tube with the air inlet (431) of air supporting injector (43); Top in outer cylinder body (11), being provided with inlet guide card (31) is fixed on the inwall of outer cylinder body (11) around inner core (14), its guide card initiating terminal (32) and terminal smooth excessive connection of the inlet tube of tangential inlet pipe (34), inlet guide card (31) is provided with along barrel circumferencial direction helical form, inlet guide card (31) is provided with along barrel circumferencial direction spiral ring, should leave certain radial clearance between the outer surface of inlet guide card (31) and inner core (14), the inlet (37) of tangential inlet pipe (34) is connected with gas-liquid mixing pump (36) by pipeline (35), thus inlet guide card (31), tangential inlet pipe (34), pipeline (35) and gas-liquid mixing pump (36) are formed gas-liquid mixed assembly (3) jointly; By water inlet pipe (441), three-way pipe (442) and drainpipe (443) connect and compose intake-discharge pipe (44), and the water inlet (444) by intake-discharge pipe (44) is connected with low head delivery port (131), circulating reflux water pump (45) is connected with circulating reflux water inlet (41) by tube exteenal reflux water lines (46), and recirculation water pipeline (42), recirculated water inlet (41), tube exteenal reflux water lines (46), circulating reflux water pump (45) and intake-discharge pipe (44) are formed water pumparound assembly (4) jointly in air supporting injector (43), air supporting baffle plate (432), the tube.
2, compact cyclone air-flotation separation equipment for processing oily wastewater according to claim 1, it is characterized in that: the lead angle of inlet guide card is 5 °-15 °, and inlet guide card (31) is 210 °-330 ° with the angle of circumference of the projection of outer cylinder body (11) inwall intersecting lens on horizontal plane.
3, compact cyclone air-flotation separation equipment for processing oily wastewater according to claim 1, it is characterized in that: air supporting injector (43), mainly form by cylindrical section (433), air entry (434), contraction section (435), suction muffler (436), throat (437) and diffuser (438), wherein the top of air supporting injector (43) is connected with recirculation water pipeline (42) in the tube by flange, and air entry (434) is connected with gas circulation pipeline (23) in the tube.
4, compact cyclone air-flotation separation equipment for processing oily wastewater according to claim 1, it is characterized in that: laterally disposed two the air supporting injectors in the external bottom of outer cylinder body (11) (43) are connected with circulating reflux water pump (45) by tube exteenal reflux water lines (46).
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2007
- 2007-11-28 CN CNU200720305624XU patent/CN201157703Y/en not_active Expired - Fee Related
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