CN203820556U - Three-level step-downbuck V-shaped waterpower rotational flow floating device - Google Patents
Three-level step-downbuck V-shaped waterpower rotational flow floating device Download PDFInfo
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- CN203820556U CN203820556U CN201420177381.6U CN201420177381U CN203820556U CN 203820556 U CN203820556 U CN 203820556U CN 201420177381 U CN201420177381 U CN 201420177381U CN 203820556 U CN203820556 U CN 203820556U
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Abstract
The utility model provides a three-level step-downbuck V-shaped waterpower rotational flow floating device, which is used in efficient treatment of oily sewage and industrial wastewater. An air phase flow and a liquid phase flow enter a three-level hydrocyclone in a tangential direction so as to form rotational movement; oil, gas and water are separated in a centrifugal force field; water is thrown into a water collecting cylinder; with gradual and instant depressurization of the cone and guide vanes of the three-level hydrocyclone, dirty oil is attached to microbubbles to be taken into an oil collecting tube, so that the production water is efficiently purified; the handling capacity can be regulated through changing an axial space of the hydrocyclones, so that the device is applicable in a wide range; in back washing, washing fluid is used for washing a tank body in an all-sided manner by a washing pipe, so that the device can wash the parts by self; the gas with liquid flows through a liquid receiver, a rectifier and a screen mesh filter to be separated by three times to become clean gas, so that the device has a self cleaning on gas; due to the configuration of a pressure safety valve, a liquid level difference transducer and a liquid level control valve, the device has high degree of automation; the whole device has a compact structure, and is easy to install, operate and maintain.
Description
Technical field
The utility model relates to the hydrocyclone air-floating apparatus that a kind of oily(waste)water and the efficient treatment system of trade effluent are used, and particularly relates to the integrated production water of a kind of offshore platform cyclone air-flotation efficient degreasing refining plant.
Background technology
Along with land and increasing marine oil gas field Exploitation Depth, the water content of oil field produce oil is also increasing gradually, especially enter high water-cut stage and tertiary oil recovery phase for oil-gas field, the average moisture content in output oil is reached more than 90%, simultaneously the also corresponding increase of intractability of oily(waste)water.
At present, in oily(waste)water and industrial wastewater treatment system, apply more have pressurized dissolved air flotation, induction flotation and compact type air supporting.Heterogeneous air dissolved pump air-flotation system completes water supercharging in a heterogeneous air dissolved pump, gas sucks and dissolving shear history, the configuration of this system is simple, running maintenance is easy, but the Cost Problems of its power consumption and pump self is very important, and heterogeneous air dissolved pump exists stronger emulsification pretreatment effect to former water, can cause the significantly reduction of purification efficiency.Waterpower induction flotation, it is jet air float, the power consumption of this technology is low, there is no rotatable parts in ejector or high speed Venturi tube simultaneously, and shearing force is less, can not cause the broken loose of adherend, but the microbubble particle diameter of generation is larger, and its efficiency is subject to the impact of ejector or high speed Venturi tube outlet aperture larger, the water quality and the pressure that enter nozzle are required to comparatively harshness, and less fluctuation may affect greatly purification efficiency.Compact type air supporting is that air supporting and cyclone separation process are integrated to processing offshore platform output content from oil well, to save space and to lighten the load etc., as the VorSep of the compact type air supporting CFU of the CrudeSep of U.S. CE TCO Technology A. S., Epcon company of Norway, German Siemens company etc., however at present domestic still in the starting stage.
In sum, in applying at the scene, there is many problems in existing pressurized dissolved air flotation and induction flotation, up-to-date compact type air supporting research is also just in the starting stage, rely on the basis of existing feasibility technology for this reason, employ new technology simultaneously, novel material and complete processing, develop novel hydropower cyclone air-flotation integrated apparatus, this device is in South China ocean current flower (LH) oil field, after the offshore platform tests such as oil field, Qinhuangdao, the Bohai Sea (QHD), obtain good effect, indices after oily(waste)water (production water) purifies meets " offshore oil exploration and exploitation Pollutant emission concentration limit value " one-level row seamark standard that National Bureau of Oceanography promulgates, the efficient needs of processing of offshore platform oily(waste)water are realized.
Summary of the invention
The defect and the deficiency that exist in order to overcome existing air flotation technology, and improve the still present Research in the starting stage of domestic compact type air supporting, the purpose of this utility model is to provide three grades of buck V-arrangement hydrocyclone air-floating apparatus of a kind of applicable oily(waste)water and industrial wastewater air flotation processing use.This hydrocyclone air-floating apparatus organically combines hydrocyclone and two kinds of oily water separation techniques of air supporting, and according to the special construction of V-arrangement and the treatment process of three grades of step-downs, possesses compact construction, produce the processing of water high-efficient purification, treatment capacity wide accommodation, parts are from rinsing and gas automatically cleaning, and level of automation is high, is easy to the features such as installation, operation and maintenance.
It is a kind of three grades of buck V-arrangement hydrocyclone air-floating apparatus of exploitation that the utility model solves the technical scheme that its technical problem adopts, and is mainly made up of several parts such as air flotation tank, three swirler device, oil header, liquid trap, gasotron, silk screen fluid strainer, liquid-inlet pipe, oil outlet pipe, rising pipe, blow-off pipes.Gas-liquid two-phase flow through liquid-inlet pipe tangentially enter three swirler device form rotatablely move, the water that density is large in centrifuge field gradually upwards and get rid of into Water collecting tube, oil droplet and micro bubble etc. are progressively migrated to oil header formation wick, and the micro bubble that wherein density is less migration and ascent rate have comparatively fast increased the two touch opportunity, form oil droplet and micro bubble adherend by continuous contact and adhesion, meanwhile, through the progressively step-down of the swirler conical surfaces at different levels and guide vane and in conjunction with the moment step-down between three swirler device, in biphase gas and liquid flow, constantly discharge a large amount of intensive microbubbles, in adherend uphill process, oil droplet and microbubble fully mixes, make be attached on microbubble and bring in oil header containing the sump oil of oil droplet and suspended substance, thereby reach desirable deoiling effect, sump oil after separation is discharged through oil outlet pipe, and water is discharged through rising pipe.With liquid air-flow through liquid trap and the initial gross separation of gasotron baffle plate, become clean air and discharge through vapor pipe at gasotron corrugated board structures surface collision and coalescent and small grain size oil droplet inertial impaction, silk screen interception and pedesis trapping coalescent triple separation in silk screen fluid strainer silk screen cake compared with larger oil droplet.
Air flotation tank material selection pressure vessel material Q345R, tank chamber entire body inner liner stainless steel 316L or two-way stainless steel.Air flotation tank adopts the structure of vertical vessel, be divided into end socket and tank body two portions, top adopts circular plate type end socket, and end socket edge is evenly arranged 24～48 screws, tank flange dish by studs and bottom is connected, and between end socket and tank body, seals by paracril pad.End socket and tank body junction are all designed with boss, and end socket central part is processed with cylindricality eyelet, and eye diameter equals oil outlet pipe external diameter; End socket surrounding is along the circumferential direction evenly arranged four washpipes, and when backsurging operation, scavenging solution enters air flotation tank through four washpipes simultaneously, ensures the each parts in tank body to carry out comprehensive flushing; Between pressure security valve union and oil outlet pipe, be furnished with vapor pipe, the clean air after triple separation is from vapor pipe is discharged air flotation tank.
The tank body top of air flotation tank adopts column-shaped barrel, bottom employing tapering is the divergent-cone wall of 50 °, and its bottom adopts saddle type envelope body, on saddle type envelope body, the conical surface of end curved surface and its upper cone shape cylindrical shell is tangent, and whole air flotation tank presents the structure of V-arrangement class sub warhead thus.Between tank body middle and lower part and three swirler device, form the Water collecting tube of Dual-barrel-shaped, be used for collecting the water of producing after water purifies, the conical configuration of Water collecting tube can ensure to fall into Water collecting tube bottom in the mode of rotating fluid after water collects simultaneously, further residual a small amount of microbubble in water phase separated.The central part of tank body saddle type envelope body bottom is welded with cylindricality and receives slag cylinder, receiving slag cylinder inner ring surface top, to adopt tapering be that the back taper of 40 ° and bottom adopt and the cylindricality of blow-off pipe same inner diameter, receives slag cylinder and enter in blow-off pipe to ensure that the solid particulates such as the isolated greasy filth of three swirler device institute fall into smoothly; The surrounding of receiving slag cylinder lower surface is evenly arranged eight screw holes.
On the circumference of end socket washpipe place, be furnished with pressure security valve union, and connect with pressure safety valve with ring flange, when air flotation tank internal pressure exceedes limit value and while there is dangerous working condition, pressure safety valve is by the automatic relief pressure of mechanical effect; On the tank wall on oil header upper end and rising pipe top, be provided with upper and lower two liquid level difference transmitter joints, liquid level difference transmitter detects the liquid level difference of water in tank body Water collecting tube automatically, and change the highest liquid level and minimum liquid level signal into electric signal, implement high liquid level and low liquid level warning and high liquid level and low liquid level and turn-off operation.On the tank wall of oil header upper end, be designed with level control valve joint, be arranged symmetrically with 180 ° of upper liquid level difference transmitter joints, the liquid level of the level control valve automatic detection oil pipe of installing on it is also controlled the blowdown oil mass of oil outlet pipe.
Liquid-inlet pipe enters the passage of first step swirler as biphase gas and liquid flow, be positioned at the tank base of air flotation tank, liquid-inlet pipe is divided into two pipelines of the 180 ° of reversed arrangement in left and right, and each liquid-inlet pipe runs through respectively the saddle type envelope body of tank body and the cone eddy flow section that its outlet tangentially enters first step swirler; Liquid-inlet pipe outlet is axially evenly distributed and each outlet is concordant with the blade face of correspondence position guide vane successively along tank body, ensures that biphase gas and liquid flow cuts smoothly the guide vane of first step swirler and collaborate with the rotating fluid on guide vane; Liquid-inlet pipe outlet caliber from bottom to top reduces in turn, ensures that the biphase gas and liquid flow of incision guide vane possesses identical flow velocity with original rotating fluid on correspondence position guide vane, to realize steady interflow.
Oil outlet pipe is the passage of sump oil effluent gases buoyant tank, from top to bottom run through successively the central part of silk screen fluid strainer, gasotron and liquid trap, final insert in oil header and with oil header arranged concentric, oil outlet pipe lower port is positioned at oil header bottom, to discharge in time the whole sump oils that collect in oil header; Oil outlet pipe top is fixed with end socket by inserting weldering, and location is realized by the strut member of liquid trap in middle part, and bottom positions by the welding gusset that on oil header, four are evenly arranged.
After rising pipe purifies as production water, aqueous phase stream goes out the passage of air flotation tank, is positioned at the top of liquid-inlet pipe.And the bottom that blow-off pipe is positioned at tank body and receives slag cylinder, its outlet be positioned at the below of liquid-inlet pipe and with 180 ° of reversed arrangement of rising pipe; Due to density variation, the entrained larger solid particulate of greasy filth isodensity of biphase gas and liquid flow can fall into the receipts slag cylinder of tank base and discharge via blow-off pipe; Blow-off pipe entrance is connected bottom ring flange and screw and receipts slag cylinder, receives between slag cylinder and blow-off pipe flange and seals by paracril pad.Between oil outlet pipe and end socket and liquid-inlet pipe, rising pipe and vapor pipe and tank wall, all adopt and insert weldering and realize and being connected, liquid-inlet pipe, oil outlet pipe, rising pipe and blow-off pipe all adopt elbow to realize pipeline with biplate flange to be connected.
Three swirler device comprises first step swirler, second stage swirler and third stage swirler, all adopt upper coarse and lower fine back taper cylindrical shell, make whole three swirler device present V-arrangement, nickel phosphor plating processing is carried out on three swirler device surface, and swirler cones at different levels spacing vertically equates, be that swirlers at different levels have identical height, progressively step-down on the inner conical surface of swirler cones at different levels when producing rotating fluid and be rotated after biphase gas and liquid flow incision swirl cone; Swirler cones at different levels junction adopts arc transition, avoids the variation of cross section tapering to cause eddy current, and ensures to form continous-stable rotating fluid on the swirler conical surfaces at different levels; The tapering of swirler cones at different levels increases successively, realize the moment step-down of biphase gas and liquid flow between swirlers at different levels, the tapering of the first step, the second stage and third stage swirler cone is designed to 40 °, 50 ° and 60 ° successively, realizes and produces the optimal separation effect of water on the swirler conical surfaces at different levels.Third stage swirler top adopts cylindrical tube, and cylinder internal diameter equals the diameter of the large end of third stage swirler cone, in time the fluid after three swirler device separates is carried out to rectification, ensures that sump oil enters oil header smoothly and water gets rid of smoothly into Water collecting tube.The upper end of third stage swirler top cylindrical shell is processed with four grooves that are along the circumferential direction evenly arranged, and welds respectively the tabular reinforcing member of bar shaped in each groove, realizes the fixing of three swirler device top.
First step swirler cone is realized and being fixed by circumferential weld with receiving slag cylinder upper end, and the diameter of cone small end equals to receive the diameter of the large end of ring cone surface in slag cylinder simultaneously.On the inner conical surface of the first step and second stage swirler cone, be all furnished with guide vane, guide vane tooth trace is the spiral-line launching along the conical surface, the height of spiral-line equals the height of swirlers at different levels, and the helix angle between the evolute of spiral-line and swirler axis is respectively 20 ° and 25 °.Guide vane is that rectangle and its height reduce gradually along tooth trace at the normal plane end face perpendicular to tooth trace, and the osculatory of rotating fluid on water conservancy diversion blade face shortened by long for this reason, ensures rotating fluid progressively step-down on guide vane.First step swirler guide vane end connects with second stage swirler guide vane initiating terminal, and the normal plane end face of junction matches, and ensures to form one continuous rotating fluid on guide vane; The continuous projection of the rectangle triangle tooth form forming along spiral-line on the swirler conical surfaces at different levels is blade tooth, the blade tooth number of swirlers at different levels reduces successively and blade tooth spacing increases successively, the blade tooth number of first step swirler is 3～5, the blade tooth number of second stage swirler is 1～3, and third stage swirler is without guide vane, to ensure that rotating fluid on swirler guide vanes at different levels exists enough pressure reduction and realizes the moment step-down of rotating fluid between guide vane.
Oil header is used for collecting the sump oil of producing after water purifies, and its top adopts cylindrical tube, and the cone that bottom employing tapering is 90 ° is connected with top cylindrical shell.The position of oil header upper port will, higher than the upper port of three swirler device, to avoid the relatively large water of density to enter in oil header, and affect the treatment effect of oily(waste)water.Oil header top is realized and being connected with the reinforcing member of three swirler device by adding fixing bolt.
The gas-liquid two-phase that liquid trap is used in initial gross separation band liquid air-flow and collection are from gasotron and the isolated oil droplet of silk screen fluid strainer, and the taper design of liquid trap cone place cone surface is 130 °, to ensure the separating effect with liquid air-flow the best on the lower conical surface.The large end disc diameter of liquid trap cone is less than the diameter of the large end of the third stage swirler conical surface, small end disc diameter is greater than oil outlet pipe external diameter and is less than oil header internal diameter simultaneously, to ensure that the oil droplet with liquid air-flow collects in rear smooth inflow oil header on " doline " upper conical surface.The large end of liquid trap cone is processed with four grooves that are along the circumferential direction evenly arranged, and welds respectively the tabular strut member of bar shaped in each groove, realizes fixing between liquid trap and air flotation tank.
Gasotron is positioned at liquid trap top, and band liquid air-flow constantly changes direction and speed in gasotron, causes mist oil droplet and corrugated board structures surface collision and coalescent, thereby guarantee mist oil droplet is separated from air-flow.Gasotron adopts corrugated plate dst structure, comprises baffle plate, drainage plate, ring-shaped clip and waved plate assembly, and waved plate assembly at right angle setting, in ring-shaped clip, is entered in oil header after liquid trap collects by the isolated oil droplet of gasotron.Baffle plate and drainage plate all adopt the two-way stainless-steel sheet of back taper with the identical tapering of liquid trap, between tank wall and ring-shaped clip, realize the fixing of gasotron by the mode of circumferential weld, the small end disc diameter of baffle plate cone and drainage plate cone equals the outer ring surface diameter of ring-shaped clip and is less than the large end disc diameter of liquid trap cone, to ensure that the isolated oil droplet of silk screen fluid strainer and gasotron enters in liquid trap smoothly.The baffle plate conical surface is used for changing the direction with liquid air-flow and making it to import in waved plate assembly, and drainage plate " doline " conical surface ensures that the isolated oil droplet of silk screen fluid strainer flows into liquid trap smoothly through gasotron.The lower end of ring-shaped clip outer ring surface is processed with the loopful groove of a square-section, adopts running fit to realize fix with baffle plate and drainage plate; Ring-shaped clip top is radially processed with the same diameter circular hole of equidistant layout, and each eyelet is embedded in bearing pin and is used for connecting waved plate assembly.
Each waved plate is radially equidistantly arranged vertically along ring-shaped clip, and corresponding one by one with the bearing pin on it, form one group of waved plate assembly that spacing is very little and flow passage is tortuous, waved plate spacing is 15～35mm, when well liquid viscosity is high, get large value, well liquid viscosity gets the small value when low, is 5～15kPa with liquid air-flow by the pressure drop of gasotron.Each waved plate is made up of two-way stainless steel, and its upper design has U-shaped claw, coordinates with bearing pin, and the angle on waved plate between adjacent flap is 120 °, and adjacent flap intersection is designed with and catches oil groove, and down, groove width is that three times of waved plates are wide to notch; The oil groove of catching in adjacent corrugated plate is equidistantly staggered, and simultaneously adjacent vertically arranged superposed of top of catching oil groove is caught liquid efficiency with what improve waved plate assembly.
Silk screen fluid strainer is positioned at gasotron top, is to the fine filtering with liquid air-flow, trap the also larger oil droplet of coalescent formation with liquid air-flow on silk screen, after oil droplet collects, after gasotron and liquid trap collect, enters in oil header.Silk screen fluid strainer comprises snap ring and silk screen cake, and employing level is installed, and snap ring adopts doughnut-shaped steel plate, inserts tank body and realizes location by the drainage plate of gasotron.Silk screen cake embeds in snap ring, and the monel wire that is 0.30mm by diameter is worked out and folded and forms, and thickness is 150mm, and porosity reaches 99%, and the B alloy wire surface-area of unit volume is about 3.5m
2/ m
3, be about 2kPa with liquid air-flow by the pressure drop of silk screen fluid strainer.Meanwhile, silk screen cake adopts diameter to be 0.10mm igelite silk is encrypted, and forms the silk screen cake of dual thickness silk, to improve silk screen filtrate efficiency and to hold back the oil droplet of small grain size as far as possible with B alloy wire.
The technique effect that the utility model can reach is that this hydrocyclone air-floating apparatus organically combines hydrocyclone and two kinds of oily water separation techniques of air supporting, possesses the feature of compact construction, arranges and saves space for whole production water treatment system; Gas-liquid two-phase flow through liquid-inlet pipe tangentially enter three swirler device form rotatablely move, water gradually upwards and get rid of into Water collecting tube, oil gas is progressively migrated to oil header, and oil droplet constantly contacts and adheres to formation adherend with micro bubble, meanwhile, flow through the progressively step-down of the swirler conical surfaces at different levels and guide vane in conjunction with the moment step-down between three swirler device of gas-liquid two-phase, sump oil is attached on the microbubble discharging and brings in oil header, produces the processing of water high-efficient purification thereby realize; By changing the maximum oily water treatment amount that swirlers at different levels spacing is vertically adjusting apparatus, make the wide accommodation of device; When backsurging operation, scavenging solution carries out comprehensive flushing through four washpipes to the each parts in tank body, possesses parts from washing action; Become clean air with liquid air-flow through the initial gross separation of liquid trap and gasotron baffle plate, gasotron collision and coalescent and silk screen fluid strainer trapping coalescent triple separation, possess gas automatic cleaning action, reduced fluid loss simultaneously; Excess pressure in the automatic toilet-cleaning jar of configuration pressure safety valve, in liquid level difference transmitter automatic detection water drum, water liquid level enforcement are reported to the police and turn-off, and level control valve automatic detection oil pipe liquid level control of sewage disposal oil mass, make the level of automation of complete assembly high; The Water collecting tube of air flotation tank bottom adopts the bitubular and conical configuration to be used for collecting and the water separating containing residual microbubble; Each interface of complete assembly adopts flange to connect, and each parts adopt split type structure, and configuration automation control system, makes it be easy to installation, operation and maintenance.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the typical structure sketch of three grades of buck V-arrangement hydrocyclone air-floating apparatus proposing according to the utility model.
Fig. 2 is the structure diagram of air flotation tank in three grades of buck V-arrangement hydrocyclone air-floating apparatus.
Fig. 3 is the structure diagram of first step swirler in three grades of buck V-arrangement hydrocyclone air-floating apparatus.
Fig. 4 is the vertical view of first step swirler in three grades of buck V-arrangement hydrocyclone air-floating apparatus.
Fig. 5 is the structure diagram of the second stage and third stage swirler in three grades of buck V-arrangement hydrocyclone air-floating apparatus.
Fig. 6 is the vertical view of the second stage and third stage swirler in three grades of buck V-arrangement hydrocyclone air-floating apparatus.
Fig. 7 is the structure diagram of gas automatically cleaning device in three grades of buck V-arrangement hydrocyclone air-floating apparatus.
Fig. 8 is the general flow chart that three grades of buck V-arrangement hydrocyclone air-floating apparatus purifying treatment are produced water.
Fig. 9 is the backsurging operation general flow chart of three grades of buck V-arrangement hydrocyclone air-floating apparatus.
1-air flotation tank in figure, 2-silk screen fluid strainer, 3-gasotron, 4-liquid trap, 5-oil header, 6-third stage swirler, 7-oil outlet pipe, 8-second stage swirler, 9-first step swirler, 10-rising pipe, 11-liquid-inlet pipe, 12-blow-off pipe, 13-washpipe, 14-vapor pipe, 15-pressure security valve union, 16-end socket, 17-studs, 18-tank body, 19-level control valve joint, 20-Water collecting tube, 21-receives slag cylinder, 22-liquid level difference transmitter joint, 23-first step swirler cone, 24-first step swirler guide vane, 25-reinforcing member, 26-swirler cylindrical shell, 27-third stage swirler cone, 28-second stage swirler cone, 29-second stage swirler guide vane, 30-snap ring, 31-silk screen cake, 32-drainage plate, 33-ring-shaped clip, 34-waved plate assembly, 35-baffle plate, 36-strut member, 37-liquid trap cone.
Embodiment
In Fig. 1, three grades of buck V-arrangement hydrocyclone air-floating apparatus are made up of air flotation tank 1, silk screen fluid strainer 2, gasotron 3, liquid trap 4, first step swirler 9, second stage swirler 8, third stage swirler 6, oil header 5, oil outlet pipe 7, rising pipe 10, liquid-inlet pipe 11 and blow-off pipe 12.When assembling, first first step swirler 9, second stage swirler 8 and third stage swirler 6 are received on air flotation tank 1 tank body successively, guarantee that liquid-inlet pipe 11 exports the cone eddy flow section that tangentially enters first step swirler 9, then oil header 5 is received on the reinforcing member of three swirler device, then liquid trap 4, gasotron 3 and silk screen fluid strainer 2 are packed in air flotation tank 1 tank body successively, guarantee each parts centering, and the end socket of air flotation tank 1 and tank body are linked together, the tensile force of each studs is identical, finally loads onto oil outlet pipe 7, rising pipe 10 and blow-off pipe 12.When purging, close the valve on oil outlet pipe 7, rising pipe 10, liquid-inlet pipe 11 and blow-off pipe 12, then by the vapor pipe on air flotation tank 1 end socket to hydrocyclone air-floating apparatus and pipeline nitrogen injection thereof, and monitor the oxygen level that discharges nitrogen by blow-off valve, reach after limit value in oxygen level, close successively gas discharge outlet and exhaust valve.
In Fig. 1, when the debugging of three grades of buck V-arrangement hydrocyclone air-floating apparatus, first whole device is carried out to hydro-test, test pressure is design pressure 1.25 times; Then, check successively whether external interface and equipment interface are connected correctly, whether each circuit connects intact, and whether joint is loosening, and whether ground terminal connects; Whether then, in inspection units, whether pipeline system joint has leakage, unimpeded, and whether the switch of each pipeline valve is correct; Finally, connect instrument air, whether inspection apparatus table gas source inlet pressure is between 500～800kPa, and whether source of the gas is clean, dry.While maintenance, every year each parts are once overhauled, check successively whether liquid-inlet pipe 11 exits have foreign matter to pile up, whether first step swirler 9, second stage swirler 8 and third stage swirler 6 cones have corrosion, whether the guide vane surface on three swirler device has corrosion, when wall thickness approaches 1mm, need to change; Check the dirt on three swirler device, oil header 5, liquid trap 4, gasotron 3 and silk screen fluid strainer 2, when thickness is greater than 3mm, need to carry out backsurging operation, the dirts such as obstinate greasy dirt can clean with alkali cleaning or with scavenging solutions such as detergents, and the dirts such as incrustation scale and anvil cinder, the scavenging solutions such as available hydrochloric acid clean.
In Fig. 1, flow velocity and the flow of producing water and the rear sump oil of purification thereof can be respectively by regulating the variable valve on liquid-inlet pipe 11 and oil outlet pipe 7 to realize.Producing water maximum throughput can realize by adjusting first step swirler 9, second stage swirler 8 and the axial spacing of third stage swirler 6.Certain in the situation that, by adjusting the variable valve on oil pipe 7, control suitable differential pressure ratio, to ensure to produce the oil removal rate of water in production water treatment amount and inlet pressure.
In Fig. 2, the end socket 16 of air flotation tank 1 connects with tank body 18 ring flanges by studs 17, scavenging solution enters the interior enforcement backsurging operation of air flotation tank 1 through washpipe 13, receives slag cylinder 21 and is used for collecting the solid particulates such as the isolated greasy filth of three swirler device institute and is sent in blow-off pipe 12.Go out at gas stream on the vapor pipe 14 of air flotation tank 1 and tensimeter is installed, Real-Time Monitoring gas outlet pressure; Automatic relief pressure when pressure safety valve guarantee superpressure dangerous working condition is installed on the pressure security valve union 15 of end socket 16, to protect air flotation tank 1; On the liquid level difference transmitter joint 22 of tank body 18, liquid level difference transmitter is installed, the liquid level difference of automatic detection water drum 20 interior waters, implements high liquid level and low liquid level warning and high liquid level and low liquid level and turn-offs operation; On the level control valve joint 19 of tank body 18, level control valve is installed, the liquid level of automatic detection oil pipe 5 is also controlled the blowdown oil mass of oil outlet pipe 7; After producing water and purifying, aqueous phase stream goes out on the rising pipe 10 of air flotation tank 1 tensimeter to be installed, Real-Time Monitoring water top hole pressure; On the oil outlet pipe 7 of sump oil effluent gases buoyant tank 1, tensimeter is installed, Real-Time Monitoring sump oil top hole pressure, and differential manometer is installed, the pressure difference between the real time measure feed liquor pipeline and delivery pipeline on liquid-inlet pipe 11 and oil outlet pipe 7.
In Fig. 3 and Fig. 4, first step swirler guide vane 24 launches along the conical surface of first step swirler cone 23, and first step swirler cone 23 is fixed by the mode of circumferential weld with receipts slag cylinder 21 upper ends.Liquid-inlet pipe 11 outlets are concordant with the blade face of correspondence position first step swirler guide vane 24, and guarantee biphase gas and liquid flow is cut smoothly guide vane and collaborated with the rotating fluid on guide vane.Biphase gas and liquid flow enters on the liquid-inlet pipe 11 of air flotation tank 1 and thermometer and tensimeter is installed, the temperature and pressure of Real-Time Monitoring biphase gas and liquid flow.
In Fig. 5 and Fig. 6, second stage swirler guide vane 29 launches along the conical surface of second stage swirler cone 28, and first step swirler guide vane 24 ends connect with second stage swirler guide vane 29 initiating terminals.The tapering of third stage swirler cone 27 is maximum in three swirler device, be designed to 60 °, rectification after the swirler cylindrical shell 26 on its top separates for rotating fluid, realizes the fixing of three swirler device top by the reinforcing member 25 welding in swirler cylindrical shell 26 upper end grooves.
In Fig. 7, gas automatically cleaning device is made up of liquid trap 4, gasotron 3 and silk screen fluid strainer 2, liquid trap 4 is used for initial gross separation band liquid air-flow collect gasotron 3 and the isolated oil droplet of silk screen fluid strainer 2, is welded with strut member 36 to realize fixing between liquid trap 4 and air flotation tank 1 in the groove of liquid trap cone 37 large ends; Gasotron 3 is separated mist oil droplet from air-flow, ring-shaped clip 33 adopts running fit to realize with baffle plate 35 and drainage plate 32 and fixes, waved plate assembly 34 is arranged vertically in ring-shaped clip 33 by bearing pin, has trapping the agglutinating power of catching oil groove enhancing gasotron 3 on each waved plate of waved plate assembly 34; Silk screen fluid strainer 2 carries out fine filtering to band liquid air-flow, and silk screen cake 31 employing levels are installed, and snap ring 30 is realized the location between silk screen fluid strainer 2 and air flotation tank 1 by drainage plate 32 simultaneously.
In Fig. 8, when purifying treatment is produced water, contain micro bubble and produce the each outlet of liquid-inlet pipe 11 of flowing through of the gas-liquid two-phase of water and tangentially spray into the cone eddy flow section that enters first step swirler 9, then on the cone of three swirler device and guide vane, form and rotatablely move and produce rotating fluid, the water that density is large in centrifuge field gradually upwards and get rid of in the Water collecting tube 20 of air inlet buoyant tank 1, and less oil droplet and the micro bubble etc. of density progressively migrated to oil header 5 and formed wick, due to oil droplet and micro bubble density variation, micro bubble migration velocity and ascent rate are very fast, thereby increase the two touch opportunity, and by constantly contact and adhesion form oil droplet and micro bubble adherend, meanwhile, flow through the progressively step-down of the swirler conical surfaces at different levels and guide vane in conjunction with the moment step-down between three swirler device of gas-liquid two-phase, can constantly discharge a large amount of intensive microbubbles, in oil droplet and micro bubble adherend uphill process, oil droplet and microbubble fully mixes, make be attached on microbubble and bring in oil header 5 containing the sump oil of oil droplet and suspended substance, thereby reach desirable deoiling effect, sump oil after separation is discharged through oil outlet pipe 7, water is discharged through rising pipe 10, and the larger solid particulate of greasy filth isodensity can fall into the receipts slag cylinder 21 of tank body 18 bottoms and discharge via blow-off pipe 12.After separation with liquid air-flow flow direction and the velocity of flow flip-flop of gas-liquid after liquid trap 4 and gasotron 3 baffle plates 35 respectively, make gas-liquid carry out initial gross separation, isolated fluid falls in liquid trap 4, and enter one group of gasotron that spacing is very little and flow passage is tortuous, 3 waved plate assemblies 34 with liquid air-flow after initial gross separation, air-flow is forced to stream, in the little runner of circulation area, oil droplet speed is improved with air-flow, and acquisition produces the energy of mass force, the change of air flow line and the inertia of oil droplet make the oil droplet that oil droplet and waved plate surface collision coalescent formation are larger, be settled down in liquid trap 4 by action of gravity, continue upwards flow and enter silk screen fluid strainer 2 from gasotron 3 band liquid air-flow out, in the silk screen cake 31 of dual thickness silk, lean on the pedesis of oil droplet inertial impaction, silk screen interception and small grain size oil droplet, trap on silk screen with liquid air-flow and the larger oil droplet of coalescent formation, after collecting, lean on oil droplet action of gravity in gasotron 3 enters liquid trap 4, after collecting by liquid trap 4, the isolated fluid of gas automatically cleaning device enters in oil header 5 clean air recycling from vapor pipe 14 is discharged air flotation tank 1 recovery.
In Fig. 9, when backsurging operation, scavenging solution four washpipes 13 on end socket 16 spray in air flotation tank 1 simultaneously, snap ring 30 to the interior silk screen fluid strainer 2 of tank body 18 and silk screen cake 31 successively, drainage plate 32, ring-shaped clip 33 and the waved plate assembly 34 of gasotron 3, the strut member 36 of liquid trap 4 and liquid trap cone 37 and oil header 5 carry out comprehensive cleaning; Scavenging solution successively enters in three swirler device and Water collecting tube 20 through oil header 5 simultaneously, and the double barrel wall in the cone to third stage swirler 6, second stage swirler 8 and first step swirler 9 and guide vane and Water collecting tube 20 and liquid-inlet pipe 11 tank skins carry out comprehensive cleaning; The scavenging solution that contains dirt after cleaning is through being discharged to outside air flotation tank 1 by oil outlet pipe 7, rising pipe 10 and blow-off pipe 12 respectively.
Claims (10)
1. one kind three grades buck V-arrangement hydrocyclone air-floating apparatus, biphase gas and liquid flow tangentially enters the formation of three swirler device and rotatablely moves, water gradually upwards and get rid of into Water collecting tube, oil gas is progressively migrated to oil header formation wick, and by constantly contact and adhesion form oil droplet and micro bubble adherend, simultaneously through the progressively step-down of the swirler conical surfaces at different levels and guide vane and in conjunction with the moment step-down between three swirler device, in biphase gas and liquid flow, constantly discharge a large amount of intensive microbubbles, sump oil is attached on microbubble and brings in oil header, reach desirable deoiling effect, band liquid air-flow after separation is through liquid trap, the triple separation of gasotron and silk screen fluid strainer becomes clean air, it is characterized in that:
One air flotation tank; Described air flotation tank top adopts circular plate type end socket, and end socket surrounding is along the circumferential direction evenly arranged four washpipes; It is the divergent-cone wall of 50 ° that tank body lower part adopts tapering, and bottom it, adopts saddle type envelope body, and whole air flotation tank presents the structure of V-arrangement class sub warhead; Between tank body middle and lower part and three swirler device, form the Water collecting tube of Dual-barrel-shaped, be used for collecting the water of producing after water purifies; The central part of envelope body bottom is welded with cylindricality and receives slag cylinder, and employing tapering in receipts slag cylinder inner ring surface top is the back taper of 40 °;
One liquid-inlet pipe; Described liquid-inlet pipe is positioned at the tank base of air flotation tank, be divided into two pipelines of the 180 ° of reversed arrangement in left and right, each liquid-inlet pipe runs through respectively the saddle type envelope body of tank body and the cone eddy flow section that its outlet tangentially enters first step swirler, and liquid-inlet pipe outlet is axially evenly distributed and each outlet is concordant with the blade face of correspondence position guide vane successively along tank body;
One oil outlet pipe, rising pipe and blow-off pipe; Described oil outlet pipe is the passage of sump oil effluent gases buoyant tank, insert in oil header and with oil header arranged concentric; Described rising pipe is the passage that aqueous phase stream goes out air flotation tank, is positioned at the top of liquid-inlet pipe; The bottom that described blow-off pipe is positioned at tank body receives slag cylinder, its outlet be positioned at the below of liquid-inlet pipe and with 180 ° of reversed arrangement of rising pipe;
One three swirler device; Described three swirler device all adopts upper coarse and lower fine back taper cylindrical shell, and whole three swirler device presents V-arrangement, and swirlers at different levels have identical height, and the tapering of swirler cones at different levels increases successively; On the inner conical surface of the first step and second stage swirler cone, be all furnished with guide vane, guide vane tooth trace is the spiral-line launching along the conical surface, and the helix angle between the evolute of spiral-line and swirler axis is respectively 20 ° and 25 °; The continuous projection of the rectangle triangle tooth form forming along spiral-line on the swirler conical surfaces at different levels is blade tooth, and the blade tooth number of swirlers at different levels reduces successively and blade tooth spacing increases successively;
One oil header; Described oil header is used for collecting the sump oil of producing after water purifies, and its top adopts cylindrical tube, and bottom employing tapering is the cone of 90 °, and the position of oil header upper port will be higher than the upper port of three swirler device;
One liquid trap; The taper design of described liquid trap cone place cone surface is 130 °, and the large end disc diameter of liquid trap cone is less than the diameter of the large end of the third stage swirler conical surface, and small end disc diameter is greater than oil outlet pipe external diameter and is less than oil header internal diameter simultaneously;
One gasotron; Described gasotron adopts corrugated plate dst structure, and waved plate assembly at right angle setting is in ring-shaped clip, and baffle plate and drainage plate all adopt the two-way stainless-steel sheet of back taper with the identical tapering of liquid trap; Each waved plate is radially equidistantly arranged vertically along ring-shaped clip, and corresponding one by one with the bearing pin on it, forms one group of waved plate assembly that spacing is very little and flow passage is tortuous; On waved plate, adjacent flap intersection is designed with and catches oil groove, and down, groove width is that three times of waved plates are wide to notch;
One silk screen fluid strainer; Described silk screen fluid strainer is positioned at gasotron top, employing level is installed, silk screen cake embeds in snap ring, the monel wire that is 0.30mm by diameter is worked out and is folded and forms, adopt diameter is that the igelite silk of 0.10mm is encrypted simultaneously, forms the silk screen cake of dual thickness silk with B alloy wire.
2. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, it is characterized in that: on the end socket washpipe place circumference of described air flotation tank, be furnished with pressure security valve union, and connect with pressure safety valve with ring flange, when air flotation tank internal pressure exceedes limit value and while there is dangerous working condition, pressure safety valve is by the automatic relief pressure of mechanical effect;
On the tank wall on described oil header upper end and rising pipe top, be provided with upper and lower two liquid level difference transmitter joints, liquid level difference transmitter detects the liquid level difference of water in tank body Water collecting tube automatically, and change the highest liquid level and minimum liquid level signal into electric signal, implement high liquid level and low liquid level warning and high liquid level and low liquid level and turn-off operation;
On the tank wall of described oil header upper end, be designed with level control valve joint, be arranged symmetrically with 180 ° of upper liquid level difference transmitter joints, the liquid level of the level control valve automatic detection oil pipe of installing on it is also controlled the blowdown oil mass of oil outlet pipe.
3. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, it is characterized in that: described liquid-inlet pipe outlet caliber from bottom to top reduces in turn, ensures that the biphase gas and liquid flow of incision guide vane possesses identical flow velocity with original rotating fluid on correspondence position guide vane.
4. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, is characterized in that: the tapering of the first step, the second stage and the third stage swirler cone of described three swirler device is designed to 40 °, 50 ° and 60 ° successively;
Described first step swirler cone is realized and being fixed by circumferential weld with receiving slag cylinder upper end, and the diameter of cone small end equals to receive the diameter of the large end of ring cone surface in slag cylinder simultaneously;
Described third stage swirler top adopts cylindrical tube, and the upper end of cylindrical shell is processed with four grooves that are along the circumferential direction evenly arranged, and welds respectively the tabular reinforcing member of bar shaped in each groove, realizes the fixing of three swirler device top.
5. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, is characterized in that: the height of the guide vane spiral-line of described three swirler device equals the height of swirlers at different levels;
Described guide vane is that rectangle and its height reduce gradually along tooth trace at the normal plane end face perpendicular to tooth trace, and the osculatory of rotating fluid on water conservancy diversion blade face shortened by long for this reason.
6. according to three grades of buck V-arrangement hydrocyclone air-floating apparatus described in claim 4 or 5, it is characterized in that: described first step swirler guide vane end connects with second stage swirler guide vane initiating terminal, and the normal plane end face of junction matches;
The blade tooth number of described first step swirler is 3～5, and the blade tooth number of second stage swirler is 1～3, and third stage swirler is without guide vane.
7. according to three grades of buck V-arrangement hydrocyclone air-floating apparatus described in any one in claim 1-6, it is characterized in that: described oil outlet pipe top is fixed with end socket by inserting weldering, location is realized by the strut member of liquid trap in middle part, and bottom positions by the welding gusset that on oil header, four are evenly arranged;
Described oil header top is realized and being connected with the reinforcing member of three swirler device by adding fixing bolt;
The large end of described liquid trap cone is processed with four grooves that are along the circumferential direction evenly arranged, and welds respectively the tabular strut member of bar shaped in each groove, realizes fixing between liquid trap and air flotation tank.
8. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, it is characterized in that: the baffle plate of described gasotron and drainage plate are between tank wall and ring-shaped clip, and the small end disc diameter of baffle plate cone and drainage plate cone equals the outer ring surface diameter of ring-shaped clip and is less than the large end disc diameter of liquid trap cone;
The lower end of the ring-shaped clip outer ring surface of described gasotron is processed with the loopful groove of a square-section, adopts running fit to realize fix with baffle plate and drainage plate; Ring-shaped clip top is radially processed with the same diameter circular hole of equidistant layout, and each eyelet is embedded in bearing pin and is used for connecting waved plate assembly.
9. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, is characterized in that: the waved plate spacing of described gasotron is 15～35mm, are 5～15kPa with liquid air-flow by the pressure drop of gasotron;
Described waved plate is made up of two-way stainless steel, and its upper design has U-shaped claw, coordinates with bearing pin, and the angle on waved plate between adjacent flap is 120 °; The oil groove of catching in adjacent corrugated plate is equidistantly staggered, simultaneously adjacent vertically arranged superposed of top of catching oil groove.
10. three grades of buck V-arrangement hydrocyclone air-floating apparatus according to claim 1, is characterized in that: the snap ring of described silk screen fluid strainer adopts doughnut-shaped steel plate, insert tank body and realize location by the drainage plate of gasotron;
The silk screen cake thickness of described silk screen fluid strainer is 150mm, and porosity reaches 99%, and the B alloy wire surface-area of unit volume is about 3.5m
2/ m
3, be about 2kPa with liquid air-flow by the pressure drop of silk screen fluid strainer.
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| CN201420177381.6U CN203820556U (en) | 2014-04-14 | 2014-04-14 | Three-level step-downbuck V-shaped waterpower rotational flow floating device |
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| CN201420177381.6U CN203820556U (en) | 2014-04-14 | 2014-04-14 | Three-level step-downbuck V-shaped waterpower rotational flow floating device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103922497A (en) * | 2014-04-14 | 2014-07-16 | 中国石油大学(华东) | Three-stage pressure-reducing V-shaped hydraulic cyclone air floatation device |
| CN104645671A (en) * | 2015-01-13 | 2015-05-27 | 杭州路弘科技有限公司 | Liquid degassing device and liquid degassing method |
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| CN103922497A (en) * | 2014-04-14 | 2014-07-16 | 中国石油大学(华东) | Three-stage pressure-reducing V-shaped hydraulic cyclone air floatation device |
| CN103922497B (en) * | 2014-04-14 | 2015-04-08 | 中国石油大学(华东) | Three-stage pressure-reducing V-shaped hydraulic cyclone air floatation device |
| CN104645671A (en) * | 2015-01-13 | 2015-05-27 | 杭州路弘科技有限公司 | Liquid degassing device and liquid degassing method |
| CN104645671B (en) * | 2015-01-13 | 2016-03-30 | 杭州路弘科技有限公司 | Liquid degassing device and method |
| CN106957088A (en) * | 2017-03-24 | 2017-07-18 | 胜利油田森诺胜利工程有限公司 | Vertical vortex type graphene oil-contained waste water treatment device |
| CN106957088B (en) * | 2017-03-24 | 2024-04-16 | 森诺科技有限公司 | Vertical cyclone graphene oily sewage treatment device |
| CN107376429A (en) * | 2017-08-04 | 2017-11-24 | 上海米素环保科技有限公司 | A kind of method and apparatus of adaptive variable-flow crude oil deaeration |
| CN107376429B (en) * | 2017-08-04 | 2022-08-02 | 上海米素环保科技有限公司 | Method and device for degassing crude oil with self-adaptive variable flow |
| US11008227B2 (en) | 2019-07-29 | 2021-05-18 | Eco Water Technologies Corp | Wastewater purification system |
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| CN112827669A (en) * | 2020-12-30 | 2021-05-25 | 东北石油大学 | Intermittent gas-liquid cyclone separator |
| CN112827674A (en) * | 2020-12-30 | 2021-05-25 | 东北石油大学 | Reciprocating intermittent type formula cyclone separation device |
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