CN106621484A - Sedimentation oil removal tank, produced water treatment system and treatment method - Google Patents

Sedimentation oil removal tank, produced water treatment system and treatment method Download PDF

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Publication number
CN106621484A
CN106621484A CN201510734784.5A CN201510734784A CN106621484A CN 106621484 A CN106621484 A CN 106621484A CN 201510734784 A CN201510734784 A CN 201510734784A CN 106621484 A CN106621484 A CN 106621484A
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CN
China
Prior art keywords
water
pipe
tank body
oil
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510734784.5A
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Chinese (zh)
Inventor
杨萍萍
黄强
王爱军
梅俊
罗春林
付蕾
张志庆
郑帅
周京都
宁江平
凌勇
姜力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinjiang Petroleum Engineering Design Co Ltd
Original Assignee
Xinjiang Petroleum Engineering Design Co Ltd
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Application filed by Xinjiang Petroleum Engineering Design Co Ltd filed Critical Xinjiang Petroleum Engineering Design Co Ltd
Priority to CN201510734784.5A priority Critical patent/CN106621484A/en
Publication of CN106621484A publication Critical patent/CN106621484A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042Baffles or guide plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045Plurality of essentially parallel plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02Settling tanks with single outlets for the separated liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/2405Feed mechanisms for settling tanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/267Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/32Hydrocarbons, e.g. oil
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

Abstract

The invention discloses a sedimentation oil removal tank, a produced water treatment system and a treatment method. The sedimentation oil removal tank comprises a tank body, wherein a center pipe column, a water distribution chamber, an oil collecting groove and a mud discharging device are arranged in the tank body; the mud discharging device is arranged at the bottom of the tank body; the center pipe column is arranged in the tank body; at least the lower end of the center pipe column is sealed; a first water outlet pipe communicates with the upper part of the center pipe column; the lower part of the center pipe column communicates with a plurality of water collecting pipelines; a water inlet opening is formed in each water collecting pipeline; the water distribution chamber is connected with a plurality of water distribution pipelines and a first water inlet pipe; each water distribution pipeline is provided with a water outlet; the oil collecting groove forms an annular shape around the inner wall of the tank body. The sedimentation oil removal tank provided by the invention uses a standing type vertical flow type storage tank, and is provided with uniform water collecting and distribution systems; in the vertical flow state, oil, water and suspended solids in the water can be naturally separated due to different densities. The produced water treatment system consists of a first-stage treatment sedimentation oil removal tank and a second-stage treatment chemical regulation cyclone reaction separation device; after produced water is subjected to two-stage treatment, the oil and suspended solid content in the outlet water can reach within 15mg/L.

Description

Sedimentation oil removing pot, produced water treatment system and processing method
Technical field
The invention belongs to oil field development ground surface works dense oil extraction wastewater processing technology field, particularly It is applied to domestic and international SAGD (Steam Assisted Gravity Drainage steam auxiliary weights Power draining) recovered water of high temperature, low profit density contrast and high emulsifiability that produces in heavy oil development In process.
Background technology
At present the Treatment Techniques of Extracted Water from Crude Oil Production of the current international practice be mainly gravitational settling oil removing, air supporting, The oil removing process such as degreaser cyclone, filtration, water outlet carries out again desalination and sofening treatment, Ran Houyong In boiler feedwater.Because the extraction coolant-temperature gage of thickened oil recovery is higher, it is unsuitable for using at bioanalysises Reason, the physics and physical chemistry processing method for mainly using has:
Physical:Physical is mainly using oil, solid suspended particle in physical principle separation water etc. Impurity, Physical mainly includes gravity separation, degreaser cyclone removal method, flat flow Grease removal tank is separated and Filtration.
Physical-chemical process:For exist in recovered water dispersed oil, oil emulsion and with dispersed, dissolving During the float that state, colloidal substance are present, it is impossible to individually removed using Physical, need to carry out The method for chemically and physically combining is removed.Mainly include coagulating sedimentation, Bubble-floating Method, chemical agent The methods such as reaction tank.
The oil-containing of the water inlet of general produced water treatment system is 2000ppm, and float is 300ppm, The total water outlet of system requires to be that oil-containing and float are below 5ppm, the common work of produced water treatment system Skill flow process is oil removing pot+air floatation machine+filter, and the treatment facility for being directed to every section of flow process slightly has not Together.Presently, there are problem mainly has two aspects, and one is the oil removing pot process effect as the first order Rate is needed to be further improved, and two is to need to make up list using the handling process of more efficient stable The deficiency of pure physical method, prior art feature and weak point it is as follows:
At present oil removing pot receives oil-containing 2000ppm as the first order treatment facility of oil removing process, Float is the recovered water raw water quality of 300ppm, and design effluent index is generally oil-containing and is less than 300ppm, float are less than 150ppm, and the design oil removal rate of oil removing pot is typically up to 90%, suspends Thing clearance is invested less than rear end air supporting and filter up to 50%, belongs to oil removing system fortune up to standard Row first concern factor.Rear end air supporting and filter plant shadow are caused because oil removing pot water outlet is not up to standard Ring total system effluent quality, and then the desalting facilities band such as the MVC (falling film evaporation desalination) to rear end To destroy, and the maintenance cost of great number will be caused.Therefore it is guaranteed at whole oil removing process and removes Salt technique is foremost to mitigate rear end as the treatment effect of the oil removing pot of first order treatment facility Reason pressure, the key point for ensureing rear end stable operation.At present external conventional oil removing pot is main There are following two forms:
Flat flow oil removing pot:The oil removing pot is horizontal-flow type, and vertical baffle is provided with inside tank, will Tank body is divided into several parts, and adjacent portions set up flow channels separately, and a horizontal baffled is integrally formed Oil removing pot.Due to separating several parts, therefore form longer in limited tank circumferential section product Flow channels, when current flow through, oil droplet due to density less than water and float up to ullage, From water inlet to outlet, the oil droplet of greater particle size is sequentially completed floating overall process, in oil removing pot Top is collected discharge, and less oil droplet fails to complete floating removal process because ascent rate is little And enter next stage flow process with current.
Common perpendicular stream oil removing pot:The oil removing pot is vertical oil removing tank, and current are on the whole vertically stream, By the water tank water outlet on tank central tube, water tank water outlet adopts pipeline water outlet, water to flow through for water inlet Flow vertically downward after sparge pipe distribution, finally enter after the tank bottoms receipts mouth of a river is collected outside drain tank.
These oil removing pots for being used for recovered water only considered the oil droplet floating effect that profit density contrast brings Should, but basic improvement is done not from the improvement of oil droplet coarse, in terms of improving ascent rate, and to coming Water undulatory property adaptability is poor, need to collect water distribution, improve current state in tank, the row of improvement for uniform The aspects such as mud mode are optimized
On the other hand, external most for the treatment of Technology for Petroleum Water Flooding are more single, predominantly physics Flow process is air supporting flow process, poor to water undulatory property, water quality diversity adaptability, due to leading portion The gentle emersion water of oil removing pot it is unstable cause filter leaching material pollute and disable situation when have send out It is raw, and for system corrosion, fouling do not have special solution, reagent cost is higher, and The medicament coagulating sedimentation process for using at present is immature, is not suitable with oil field produced water process work The requirement up to standard of Cheng Jianshe efficient process, water stabilization.
In sum, produced water treatment is primarily present following problem in prior art:
1) oil removing pot aspect:
A, water distribution of catchmenting are uneven:Both the above oil removing pot is using the side of the big stock water inlet of water inlet Formula, current disturb larger when entering in tank, the fluidised form of water can be affected without uniform water distribution, in water Middle formation flow-disturbing, the shearing force for disturbing current multiple directions causes oil droplet except buoyancy brings There is the speed in other directions outside ascent rate, floating height have impact within the limited time, Therefore under the requirement of design oil removal rate, improve the requirement of the time of staying.And uniformly do not match somebody with somebody Water also reduces the adaptability to carrying out water slug, easily causes reunion shape crude oil and fails to assign To be put into oil removing pot, lower end flow process is directly entered because sedimentation capacity is not enough, lower end is set It is standby to pollute.Water after oil removing forms short stream due to failing uniform collection, easily, and water exit end goes out Sump oil and sludge are easily assembled in the mouth of a river where nearby fluidised form is bad, bring effluent quality to fluctuate.
B, without efficient spoil disposal facility:At present without special spoil disposal facility in both oil removing pots, on The equal natural subsidence of settled sludge is to tank bottoms in silt, Organic substance colloid and water that downstream belt is come, at present Setting sewage draining exit connects the mode of clear tank car periodically clear tank operation and removes, and only discharges when sludge is less The tank bottoms water in part, the clear full tank when heavy mud is larger.On the one hand this mode of operation can not all go Except tank bottoms sludge, still can pile up in the sludge of clear tank mouth opposite side, on the other hand during clear full tank Need to stop production, or oil removing pot will typically build two, increase investment.
C, flat flow oil removing pot fluidised form are undesirable.Because water and oil droplet are co-flow, oil droplet is removed Outside the ascent rate come due to buoyant belt, also there is one to horizontally advance by flow shear or so Speed, therefore it is parabola floating track that oil droplet is actual.Because flow rate of water flow is much larger than floating flow velocity, So that in limited floating height, level propulsion track is longer, higher to runner length requirement, In the case where lifting height is constant, oil removing pot sectional area is increased, effective time of staying is corresponding Extend.
2) technological process aspect:Existing oil removing pot and air supporting flow process cannot ensure stable effluent quality It is qualified, it is larger to filter pressure.Part crude oil dehydrating effect is bad, contains sewage oil Amount is big, impacts sewage treatment facility, the gravity oil-removing of front end coagulation and the gas of two stage treatment Floating and degreaser cyclone goes out water unstable.With various secondary, tertiary oil recovery technologies on a large scale Promote, recycle-water mixes produced water treatment system and processes, increase recovered water viscosity, oil emulsion More stable, profit density contrast is little, and air supporting and cyclone separator are difficult to reach ideal effect. The low defect of the oily removal efficiency of equipment aspect generally existing small granular suspended matters and nominal particle size, Processing pressure is married again filter by above many reasons, causes filter clogging to affect to process effect Really, and to be made oil mass is unqualified filtrate to pollute situation about cannot run because of front end to happen occasionally.
3) produced water treatment system is without effective ion balanced measure, and corrosion and scaling problem is serious.By Only Physical process is carried out to recovered water in oil removing pot+air supporting flow process, to calcium and magnesium in water etc. into dirt from Son can not be reduced effectively, and oil removing system scale problems are projected, and scale remover dosing cost is big.
4) chemical treatment technology urgently optimizes.In view of physics flow process is to stable water outlet and antiscale energy The deficiency of power, part oil field starts to be solved the above problems using the technique of chemical agent reaction tank, But because application time is shorter, only chemical agent reacts the technique of flocculation basin, is not formed with Effect, integrated dosing Reaction Separation technique and equipment.Flocculation tank cost is high, construction is tired It is difficult.When the method settled with chemical coagulation processes oil-polluted water, need to add substantial amounts of water purification medicine Agent, so as to form substantial amounts of flco, becomes sludge after settling of floccus, discharge after directly being settled, The performance of Water purification medicament is not utilized completely, and the flco for being formed is loose, sludge settling property Difference, is unfavorable for the processed of follow-up sludge, therefore inefficiency, work quality is poor, into This height.
The content of the invention
In view of the above-mentioned problems in the prior art, the technical problem to be solved is The sedimentation oil removing pot of a kind of oil that can effectively remove in recovered water and suspended solid is provided.
In order to solve above-mentioned technical problem, following technical scheme is present invention employs:Sedimentation oil removing Tank, including tank body,
Hollow center tubing string, distributing water room, oil trap and mud discharging device are provided with the tank body;
The center tubing string is vertically interior located at the tank body and at least lower end seals, the central canal The top of post is communicated with the first outlet pipe extended to outside the tank body, and bottom is communicated with positioned at institute The multiple pipelines that catchment in tank body are stated, on the pipeline that catchments water inlet is provided with;
The distributing water room is connected with the multiple water distribution pipelines in the tank body and extends to described The first water inlet pipe outside tank body, on the water distribution pipeline outlet is provided with;
The oil trap forms annular around the inwall of the tank body;
The mud discharging device is arranged at the bottom in the tank body.
Preferably, each described water distribution pipeline includes that one perpendicular to the center tubing string is matched somebody with somebody Water conduit tube, a water distribution primary branch being vertically connected on the distributing main and it is connected to described Many water distribution branched pipes on water distribution primary branch, per water distribution branched pipe described in root on respectively have institute State outlet.
Preferably, the outlet is in horn-like and opening upwards.
Preferably, the distributing water room is set on the center tubing string, multiple sparge pipes The many distributing mains on road are distributed in the distributing water room.
Preferably, the pipeline that catchments described in each includes a collection perpendicular to the center tubing string Water conduit tube, be vertically connected on the collection water conduit tube catchment and primary branch and are connected to described The many branched pipes that catchment catchmented on primary branch, per the branched pipe that catchments described in root on respectively have institute State water inlet.
Preferably, the water inlet is in horn-like and Open Side Down.
Present invention simultaneously discloses a kind of produced water treatment system, including oil removing pot and chemistry adjustment rotation Stream reaction separating device, the oil removing pot is above-mentioned sedimentation oil removing pot, first outlet pipe It is connected to the chemistry adjustment cyclone reaction segregation apparatuss.
Preferably, the chemistry adjustment cyclone reaction segregation apparatuss are cyclone reaction knockout drum, The cyclone reaction knockout drum includes tank body and the cyclone reaction center being longitudinally disposed in the tank body Cylinder, the lower end of the cyclone reaction central tube and the intracavity inter-connection of the tank body, the eddy flow Reaction center cylinder is divided into from top to bottom first order cyclone reaction section, second level cyclone reaction section With third level cyclone reaction section;
It is fixedly connected with second extend in the first order cyclone reaction section on the tank body to enter Water pipe, the second water purification agent pipe extending in the second level cyclone reaction section and it extend into described Flocculant pipe in third level cyclone reaction section, on second water inlet pipe the first water purification is communicated with Agent pipe;
Top in the tank body is fixedly installed collector pipe and positioned at the top of the collector pipe Oil collecting pipe, offers water inlet on the collector pipe, be connected with the collector pipe and stretch out described The second outlet pipe outside tank body;Oil-in is offered on the oil collecting pipe, is connected on the oil collecting pipe It is connected to the flowline stretched out outside the tank body;
The bottom of the tank body is connected with discharge pipeline;
First outlet pipe is connected with second water inlet pipe.
Preferably, the collector pipe and oil collecting pipe are annular, the collector pipe and oil collecting pipe It is enclosed within outside the cyclone reaction central tube, the water inlet is to be distributed on the collector pipe It is multiple, the oil-in be distributed in it is multiple on the oil collecting pipe.
Preferably, the axis direction of second water inlet pipe and the cyclone reaction central tube Inwall is tangent.
Preferably, the chemistry adjustment cyclone reaction segregation apparatuss include Cyclonic reactor and remove Slag knockout drum;
The Cyclonic reactor includes tank body, is provided with the tank body for the tank body to be divided It is divided into the dividing plate of first order reaction chamber positioned at bottom and superposed second level reaction chamber;
Water inlet is offered on the tank body of the correspondence first order reaction chamber, is set in the water inlet It is equipped with and stretches into the 3rd water inlet pipe that the first order reacts intracavity;
Water purification medicament is offered on the tank body of the correspondence second level reaction chamber add mouth and water outlet Mouthful, the Water purification medicament adds and the medicament throwing for stretching into the second level reaction intracavity is provided with mouth Plus pipe, it is provided with the outlet and stretches into the 3rd outlet pipe that intracavity is reacted in the second level, The adding of agent pipe is located at the bottom of the second level reaction chamber, and the 3rd outlet pipe is located at The top of the second level reaction chamber;
Through hole is offered on the dividing plate, the through hole is by connecting tube and the adding of agent pipe Connection;
The bottom of the tank body is provided with blowdown blow-down pipe;
3rd water inlet pipe is connected with first outlet pipe.
Preferably, the slagging-off knockout drum is spraying slagging-off knockout drum, the spraying slagging-off point From tank include tank body, Swirl cylinder, spraying deslagging device, oil-collecting device, mud discharging device and Water collector;
The Swirl cylinder is located in the tank body and upper end is open, and lower end is solid with the tank body Determine and seal, ring cavity, the Swirl are formed between the Swirl cylinder and the tank body The bottom of cylinder has the connected entrance of at least one and the intracavity inter-connection of the tank body, the center Be connected with the 4th water inlet pipe in the middle part of whirl cylinder, one end of the 4th water inlet pipe be located at it is described in In heart whirl cylinder, the other end is connected with the 3rd outlet pipe;
The spraying deslagging device is arranged at the upper outside of the Swirl cylinder;
The oil-collecting device is arranged in the corresponding inner tank wall in the Swirl cylinder upper end;
The mud discharging device is arranged at the position of the tank base correspondence connected entrance;
The water collector includes being installed on the plug-in water tank of the tank body outer upper and receipts water Pipe, the receipts water pipe includes receiving water ring pipe and L shape skirts, and the receipts water ring pipe is located in tank body Middle part and be placed on outside the Swirl cylinder;One end of the L shapes skirt and the receipts water ring Pipe is connected, and the other end passes the tank body and stretches in the plug-in water tank, the plug-in water tank Inside it is connected with the 4th outlet pipe.
Preferably, being provided with water-level regulator, the water-level regulator in the plug-in water tank Including outer tube, inner core, screw mandrel, installing rack, handwheel and handwheel seat are adjusted, the outer tube is fixed Bottom in plug-in water tank, the L shapes skirt is located in the outer tube, the 4th water outlet Pipe is positioned at the outside of the outer tube;The regulation inner core is set in the outer tube and can be upper and lower It is mobile, and the outer wall for adjusting inner core keeps sealing, the regulation with the inwall of the outer tube The screw mandrel is fixed with inner core, the installing rack is located at the top of the outer tube, the handwheel The lower end of seat is installed on the installing rack, and the handwheel, institute are installed in the upper end of the handwheel seat State handwheel middle part and the nut that pass through can the screw mandrel is installed.
Preferably, the inwall of the axis direction of the 4th water inlet pipe and the Swirl cylinder It is tangent, and the outlet of the 4th water inlet pipe is on the inwall of the Swirl cylinder;It is described Oil-collecting device is the cannelure formed around the inwall of the tank body, is connected with the cannelure Stretch out the collection tube outside the tank body.
Preferably, the spraying deslagging device includes slag receiving trough, slag gathering hopper, receives slag pipe and punching Wash water pipe;
The upper end of the Swirl cylinder is located at the slag receiving trough through the bottom surface of the slag receiving trough Interior, the bottom surface of the slag receiving trough is the low inclined-plane of higher end;
The slag gathering hopper is arranged at the outside of the bottom of the slag receiving trough;
The receipts slag pipe is connected on the slag gathering hopper and stretches out outside the tank body;
The top of the Swirl cylinder, the flushing water are fixed in the upper end of the wash tub pipe Spraying nozzle is connected with pipe, the lower end of the wash tub pipe is passed outside the tank body.
Preferably, the slagging-off knockout drum is negative pressure deslagging knockout drum, the negative pressure deslagging point Include tank body and the cylinder being arranged in the tank body from tank, the upper end of the cylinder is open, under End is fixed and is sealed with the tank body, and ring cavity is formed between the cylinder and the tank body, described The bottom of cylinder has the outlet of at least one and the intracavity inter-connection of the tank body;The cylinder Interior top is installed with receipts slag funnel, and the bottom of the receipts slag funnel is connected with stretches out tank body Outer scum pipe;The 5th water inlet pipe is connected with the middle part of the cylinder;In the top of the tank body The collection tank of annular is formed on wall, the receipts oil stretched out outside the tank body is connected with the collection tank Pipe;The packing layer for being fixedly arranged in the middle of annular of the ring cavity;In ring cavity above described filler layer The receipts water pipe of annular is set, the 5th water outlet stretched out outside the tank body is connected with the receipts water pipe Pipe;The tank base is fixed with the first annular dredging tube in the ring cavity, described to fill out The bed of material is fixedly arranged above the second annular sludge-suction pipe.
The invention also discloses a kind of method for treating water cut out, comprises the steps:
1) oil removing is settled:Using sedimentation oil removing pot using oil, water and aerosol density in recovered water Difference, it is most oil float, float sink and by natural separation, remaining small part Oil and float carry out next program;
2) cyclone reaction oil removing:Jing step 1) process after recovered water enter cyclone reaction chemistry Adjusting cyclone reaction segregation apparatuss, and add 2-3 kinds Water purification medicament carries out chemical cyclone reaction, Having in recovered water is effectively caught with float by Water purification medicament grows up with coalescence, and sludge sinks, Scum silica frost floats, and efficiently separates, and realizes the purification of effluent quality.
Compared with prior art, sedimentation oil removing pot of the invention, produced water treatment system and process The beneficial effect of method is:
1st, the sedimentation oil removing pot in the present invention adopts vertical vertical-flow storage tank, arranges uniform collection and matches somebody with somebody Water system, makes oil, the water in recovered water with suspended solid because density is different under perpendicular stream mode Natural separation, and with receipts oil and spoil disposal function, thus greatly improve extracted water deoiling Work efficiency and work quality.Compare traditional flat flow oil removing pot oil removal efficiency and improve about 40%, Construction investment about 30% is saved, efficiently solves that oil removing pot treatment effeciency in prior art is low to ask Topic.
2nd, produced water treatment system of the invention mainly by the sedimentation oil removing pot as coagulation and As the chemistry adjustment cyclone reaction segregation apparatuss composition of two stage treatment, simple physical method can be made up Deficiency, with the environmental requirement of reuse up to standard after oily waste water treatment it is increasingly strict and right Produced water treatment system stable water outlet is up to standard and effectively prevents the demand of corrosion and scaling from highlighting, this It is bright to take into account purification of water quality and water stabilization, using the chemistry of energy effective control recovered water corrosion and scaling Adjustment cyclone reaction segregation apparatuss are little, organic containing a certain amount of macromolecule to adapt to profit density contrast The process of thing or complicated aqueouss recovered water.By adding Water purification medicament (chemical agent), realize Improvement to recovered water aqueouss, and oil, float and water purification are realized by efficient consersion unit The hybrid reaction of medicament, and efficiently separating, realizes water purification, and to water in into dirt and rotten Corrosion ion is controlled.
3rd, the present invention can be applied to the low profit of high temperature produced in domestic and international SAGD heavy oil developments In density contrast and high emulsifiability produced water treatment, after this two stages for the treatment of, water outlet contains recovered water Oil and float can reach within 15mg/L, and rear end meets reuse requirement by being aided with filtration.Solution The high emulsifiability recovered water oil bead diameter of the low profit density contrast of high temperature of having determined is little, profit stability strong, The big problem of conventional process flow difficulty, is that heavy oil development solves recovered water treatment for reuse pot up to standard The problem of outlet of stove, it is to avoid wastewater disposition pollution environment, while save clear water produce it is huge Economic benefit.
Description of the drawings
Fig. 1 is the structural representation of the sedimentation oil removing pot of the present invention.
Fig. 2 is the A-A direction views in Fig. 1.
Fig. 3 is the structural representation of the cyclone reaction knockout drum in the produced water treatment system of the present invention Figure.
Fig. 4 is the structural representation of the Cyclonic reactor in the produced water treatment system of the present invention.
Fig. 5 is the structural representation of the spraying slagging-off knockout drum in the produced water treatment system of the present invention Figure.
Fig. 6 is the structural representation of the negative pressure deslagging knockout drum in the produced water treatment system of the present invention Figure.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail with specific embodiment, but is not made For limitation of the invention.
As shown in figure 1, the disclosed sedimentation oil removing pot of embodiments of the invention, including tank body 101, Hollow center tubing string 102, distributing water room 103, oil trap 104 and row are provided with tank body 101 Mud device 105.Center tubing string 102 is vertically interior located at tank body 101 and at least lower end seals.This reality The lower end for applying the center tubing string 102 of example is connected and seals with the bottom of tank body 101, upper end and tank The top of body 101 connects and seals.The top of center tubing string 102 is communicated with and extends to tank body 101 The first outer outlet pipe 106, bottom is communicated with the multiple pipelines 107 that catchment in tank body 101, Catchment and be provided with water inlet 108 on pipeline 107.
Distributing water room 103 is connected with the multiple water distribution pipelines 109 in tank body 101 and extends to The first water inlet pipe 110 outside tank body 101, is provided with outlet 111 on water distribution pipeline 109.Collection Oil groove 104 forms annular around the inwall of tank body 101.The opening upwards of oil trap 104, its Section is U-shaped, referring specifically to Fig. 1.Flowline 112, flowline are communicated with oil trap 104 112 stretch out outside tank body 101.Mud discharging device 105 is arranged at the bottom in tank body 101.
As a preferred embodiment of the present invention, continuing with Fig. 1 and with reference to Fig. 2, each water distribution Pipeline 109 includes connected perpendicular to center tubing string 102 and with the inside of center tubing string 102 Distributing main 113, a water distribution primary branch 114 being vertically connected on distributing main 113 and company Many water distribution branched pipes 115 being connected on water distribution primary branch 114, on every water distribution branched pipe 115 There is respectively outlet 111.As shown in figure 1, outlet 111 is in horn-like and opening upwards.
Continuing with Fig. 1, in order that the even water distribution on the same cross section of tank body 101, it should will Distributing water room 103 is arranged at the middle part of tank body 101, and the center tubing string 102 in the present embodiment is located at The center of tank body 101, on the centrally disposed tubing string 102 of distributing water room 103, in the present embodiment Distributing water room 103 is annular, and is enclosed within center tubing string 102.Multiple water distribution pipelines 109 it is many Root distributing main 113 is in uniform mode in distributing water room 103.
The pipeline 107 that catchments is adopted and water distribution pipeline essentially identical configuration, i.e. each pipeline that catchments 107 one for including perpendicular to center tubing string 102 and connecting with the inside of center tubing string 102 catchment dry Pipe, a primary branch and being connected to of catchmenting being vertically connected on collection water conduit tube catchment on primary branch The many branched pipes that catchment, on the branched pipe that catchments per root respectively have water inlet 108.Catchment pipeline 107 structure is referred to Fig. 2 and is understood.Water inlet 108 is in horn-like and Open Side Down.
Mud discharging device 105 is used to remove the sediment deposition thing come in liquid.Spoil disposal in the present embodiment Device adopts Chinese patent Authorization Notice No. for a kind of sludge removing device for oil tank of CN2516279Y.
In addition, as shown in figure 1, one end overflowing outside tank body 101 is provided with tank body 101 Flow tube 117, with when liquid level is too high in tank body 101, by overflow pipe 117 by tank body 101 Water discharge tank body 101 outside.
The course of work of the sedimentation oil removing pot of the present invention is introduced with reference to Fig. 1:Extraction Water flows into distributing water room 103 by the first water inlet pipe 110, then Jing water distribution pipelines 109 and outlet 111 flow in tank body 101, and the larger oil droplet of particle diameter floats up to first oil reservoir in water, and particle diameter is less Oil droplet flow downward with water.During flowing downward, a part of little oil droplet is due to itself The promotion of ascent rate difference and water velocity gradient in hydrostatic, continuous collision coalescence is into big oil Pearl and float, the part oil droplet of supreme i enters the pipeline 107 that catchments with water Jing water inlets 108, Flow out outside tank body 101, under entrance subsequently into center tubing string 102, then the first outlet pipes of Jing 106 One program;Oil slick in oil reservoir flows into oil trap 104, then Jing flowlines 112 flow out;Tank body The sludge of 101 congregates enters mud discharging device 105, and then Jing blow-off pipes 116 are discharged.
By the above-mentioned description to settling oil removing pot, it is known that its advantage is:
1) due to the opening upwards of outlet 111 of water distribution pipeline, when water from the mouth of pipe with certain speed After outflow, oil droplet process is obtained because of the buoyancy (caused by because of profit relative density difference) of itself The ascent rate in water outside, also promoted by vertical speed on current direction, oil droplet will faster Oil reservoir is reached, the required separation sedimentation time shortens.
2) present invention in sedimentation oil removing pot using upper water distribution, under catchment by the way of.Initially because touching Hit coalescence and diameter becomes big floating oil droplet and between the oil droplet that flowed downward by current entrainment, all the time Convection current collision coalescence process is there is, this process is highly beneficial to short grained coalescence.Convection current The efficiency of collision coalescence depends on the number of oil droplet in unit volume, and oil droplet is individual in unit volume Number is more, then collision coalescence chance is more, and efficiency is higher.
3) catchment pipeline water inlet and water distribution pipeline outlet using radiant type horn mouth, The uniformity for ensure that water distribution, catchmenting, and have simple structure, it is easy for installation, be difficult Blocking, the advantage for operating steadily.The water flowed out from water distribution pipeline is set to be evenly distributed in tank body Horizontal cross-section on, and uniformly collect outflow tank body.Because water distribution pipeline has been arranged to match somebody with somebody The mode of water conduit tube, water distribution primary branch and Duo Gen water distribution branched pipes so that the water of outflow is by certain Velocity gradient successively decrease, reduce the perturbation of the water in tank body, flow-disturbing will not be produced and shadow The ascent rate of oil is rung, more using the coalescence of oil droplet.
The present invention discloses a kind of produced water treatment system, it includes oil removing pot and chemistry tune Whole cyclone reaction segregation apparatuss, oil removing pot settles oil removing using the sedimentation oil removing pot shown in Fig. 1 First outlet pipe 106 of tank is connected to chemistry adjustment cyclone reaction segregation apparatuss.Chemistry adjustment rotation Stream reaction separating device is the characteristic according to recovered water, filters out the Water purification medicament for needing to add, Water purification medicament interval of adding and hybrid reaction intensity are tested out simultaneously, recycle chemistry adjustment The vortex field that the turbulent flow of cyclone reaction segregation apparatuss diminishes step by step, in technique for Water purification medicament with The mixing of recovered water provides power, and water outlet after reaction is produced reaction by way of coagulant precipitation Thing flco is separated from water, and realizes water purification.
The chemistry adjustment cyclone reaction segregation apparatuss of the present invention can be carrying out reality using following two modes Existing, one kind is combination type device, is the cyclone reaction point being mainly directed under conventional condition of water quality From tank;Second is two part arrangement, mainly for complicated aqueouss, by Cyclonic reactor and is removed Two parts of slag knockout drum constitute.
Chemistry adjustment cyclone reaction segregation apparatuss are using the cyclone reaction knockout drum shown in Fig. 3, rotation Stream Reaction Separation tank includes tank body 201 and the cyclone reaction central tube being longitudinally disposed in tank body 201, The upper end closed of cyclone reaction central tube simultaneously offers oil gas vent 214, lower end and tank body 201 Intracavity inter-connection, cyclone reaction central tube is divided into from top to bottom first order cyclone reaction section 202nd, second level cyclone reaction section 203 and third level cyclone reaction section 204.It is solid on tank body 201 Surely be connected with extend in first order cyclone reaction section 202 the second water inlet pipe 205, extend into The second water purification agent pipe 207 in two grades of cyclone reaction sections 203 and it extend into third level cyclone reaction Flocculant pipe 208 in section 204, is communicated with the first water purification agent pipe 206 on the second water inlet pipe 205. Top in tank body 201 is fixedly installed collector pipe 209 and the oil-collecting positioned at the top of collector pipe Pipe 210, offers water inlet (not shown) on collector pipe 209, connect on collector pipe 209 It is connected to the second outlet pipe 211 stretched out outside tank body 201;Oil-in (figure is offered on oil collecting pipe 210 Not shown in), the flowline 212 stretched out outside tank body 201 is connected with oil collecting pipe 210.Tank body 201 bottom is connected with discharge pipeline 213.The connection of sedimentation oil removing pot, Jing sedimentation oil removing pots are processed Water Jing the first outlet pipes 106 and the second water inlet pipe 205 afterwards is carried out into cyclone reaction knockout drum Chemical treatment.
Continuing with Fig. 3, for the ease of catchmenting and oil-collecting, collector pipe 209 and oil collecting pipe 210 Annular is, collector pipe 209 and the equal fixed cover of oil collecting pipe 210 are in the upper of cyclone reaction central tube Outside portion, water inlet is to be distributed in multiple on collector pipe 209, and oil-in is to be distributed in oil collecting pipe It is multiple on 210.In order that the gas produced in sewage can be discharged outside tank body 201, in tank body 201 top is provided with air vent 215.
In addition, the axis direction of the second water inlet pipe 205 is tangent with the inwall of cyclone reaction central tube. By the way of tangential water inlet, make current that rotation fluidised form is formed in cyclone reaction central tube, protect Certain water velocity is held, to form velocity gradient field, flco coalescence effect is further improved.
First order cyclone reaction is entered into by the second water inlet pipe 205 by the water of sedimentation oil removing pot In section 202, water passed through the first water purification agent pipe 206 before into first order cyclone reaction section 202 The first Water purification medicament is added, the reaction in first order cyclone reaction section 202;First order eddy flow Separable fuel-displaced and gas in conversion zone 202, the oil isolated and gas can be from oil gas vents 214 It is discharged in tank body 201 and discharges outside tank body 201 from air vent 215.Then into the second level In cyclone reaction section 203, by the second water purification agent pipe 207 to second level cyclone reaction section 203 Second Water purification medicament is inside added, again flocculation reaction;It is anti-that last water enters into third level eddy flow Answer in section 204, while being added into third level cyclone reaction section 204 by flocculant pipe 208 Organic polymer coargulator, net is flutterred and adsorbed and forms little flco;Preliminarily form loose flco Jing The bottom of cyclone reaction central tube is entered in tank body 1, due to the upper and gravity compressed of current, In first order cyclone reaction section 202, second level cyclone reaction section 203 and third level cyclone reaction section Sludge Bed 216 is formed between 204 and tank body 201, is continued filtration, net and is flutterred and adsorb little flco, The Interstitial Water between sludge is compressed simultaneously, is formed closely knit sludge and is deposited to the bottom of tank body 2011. Sewage takes full advantage of the rest potential of Water purification medicament, the negative electricity of little oil droplet after Sludge Bed Position is reduced, and coalescence floats into big oil droplet, into the oil collecting pipe 210 at the top of tank body 201 It is interior, then discharge from flowline 212;Water after purification enters collector pipe 209 and from the second water outlet Pipe 211 is discharged;Valve on the discharge pipeline 213 of the bottom of tank body 201 is opened by timing, can Sludge is discharged.
Cyclone reaction knockout drum reasonable and compact in structure in the present invention, can fast and effectively purify Sewage, remove sludge and collect oil droplet, thus greatly improve the work for processing oil-polluted water Efficiency and work quality.
Second of chemistry adjustment cyclone reaction segregation apparatuss in the produced water treatment system of the present invention Planting two part arrangement includes Cyclonic reactor and slagging-off knockout drum;As shown in figure 4, cyclone reaction Device includes tank body 301, and dividing plate 307 is arranged in tank body 301, dividing plate 307 is by 301 points of tank body It is divided into the first order reaction chamber 302 and superposed second level reaction chamber 303 positioned at bottom; Water inlet is offered on the tank body 301 of correspondence first order reaction chamber 303, is provided with water inlet The 3rd water inlet pipe 304 in first order reaction chamber 303 is stretched into, the 3rd water inlet pipe 304 is removed with sedimentation First outlet pipe 106 of oil tank connects.Open on the tank body 301 of correspondence second level reaction chamber 303 It is provided with Water purification medicament and adds mouth and outlet, Water purification medicament is added to be provided with mouth and stretches into the second level Adding of agent pipe 305 in reaction chamber 303, is provided with outlet and stretches into second level reaction chamber The 3rd outlet pipe 306 in 303, adding of agent pipe 305 is located under second level reaction chamber 303 Portion and close to dividing plate 307, the 3rd outlet pipe 306 is located at the top of second level reaction chamber 303.Every Offer on plate 307 and arrange in through hole, through hole connecting tube 308, connecting tube 308 and adding of agent Pipe 305 is connected.
Can enter on dividing plate 307 and through hole is set, and be not provided with connecting tube 308, first order reaction chamber Water in 302 is directly entered second level reaction chamber 303.Arranging connecting tube 308 can make by first The enough Water purification medicaments added with adding of agent pipe 305 of the water energy in order reaction chamber 302 are fully reacted.
The 3rd water inlet pipe 304, the 3rd outlet pipe 306 and adding of agent pipe 305 in the present embodiment It is horizontally disposed with, and connecting tube 308 is vertically arranged.
As shown in figure 4, the water from the first outlet pipe 106 of sedimentation oil removing pot adds the first The first order reaction chamber of Cyclonic reactor bottom is entered after Water purification medicament by the 3rd water inlet pipe 304 302, after Water purification medicament is sufficiently mixed, reacts with sewage, enter through the through hole on dividing plate 307 Second level reaction chamber 303, connects when into second level reaction chamber 303 with adding of agent pipe 305, Second Water purification medicament, second Water purification medicament and the first Water purification medicament reaction are mixed in sewage Afterwards water is sufficiently mixed in second level reaction chamber 303, reacts, and flco is further grown up, flco The bottom of tank body 301 is deposited to, last a small amount of oil slick is entered with logical 3rd outlet pipe 306 of water and removed Slag knockout drum is further processed.Emergency vent 310, bottom are provided with the top of Cyclonic reactor Portion is provided with blowdown drain 309.
Slagging-off knockout drum in the produced water treatment system of the present invention can be separated using spraying slagging-off Tank, it would however also be possible to employ negative pressure deslagging knockout drum.
As shown in figure 5, spraying slagging-off knockout drum includes tank body 401, Swirl cylinder 402, spray Mist deslagging device, oil-collecting device, mud discharging device and water collector.Swirl cylinder 402 it is upper End is open, and lower end is fixed on the bottom of tank body 401 and seals, Swirl cylinder 402 and tank body Ring cavity is formed between 401, the bottom of Swirl cylinder 402 has at least one with tank body 401 The connected entrance 403 of intracavity inter-connection, the middle part of Swirl cylinder 402 is connected with the 4th water inlet pipe 404, one end of the 4th water inlet pipe 404 is located in Swirl cylinder 402, and the other end is anti-with eddy flow The 3rd outlet pipe 306 for answering device connects.Spraying deslagging device is arranged at Swirl cylinder 402 Upper outside.Oil-collecting device is arranged at the interior of the corresponding tank body 401 in the upper end of Swirl cylinder 402 On wall.Mud discharging device is arranged at the position of the bottom correspondence connected entrance 403 of tank body 401.Receive water Device includes the plug-in water tank 405 of the outer upper for being installed on tank body 401 and receipts water pipe, receives water The lower end of pipe is located in tank body 401 and connects with tank body 401, receives the upper end of water pipe and plug-in water Case 405 is connected;The bottom of plug-in water tank 405 is fixedly connected with the 4th outlet pipe 406.
Can continuously and effectively by the inner top of tank body 401 by spraying deslagging device and oil-collecting device The scum silica frost of accumulation is separated and discharged outside tank body 401 with the water after process.And deslagging device of spraying Water smoke can be sprayed, scum silica frost is effectively removed, it is to avoid the scum silica frost Jing the 4th of the top of tank body 401 accumulation Outlet pipe 406 flows out, and reduces impact of the scum silica frost to effluent quality and backend flow.
Continuing with Fig. 5, the axis direction of the 4th water inlet pipe 404 is interior with Swirl cylinder 402 Wall is tangent, and the outlet of the 4th water inlet pipe 404 is on the inwall of Swirl cylinder 402.The The axial direction of four water inlet pipes 404 is tangent with the inwall of Swirl cylinder 402, can make to wait to locate The water of reason is tangentially entered in Swirl cylinder 402, produces high-speed eddy, accelerates pending dirt The mixing of water and Water purification medicament.
With continued reference to Fig. 5, receiving water pipe includes receiving water ring pipe 407 and L shapes skirt 408, receives water ring Pipe 407 is placed on outside the middle part of Swirl cylinder and is fixed with the outer wall of tank body 401 by gusset, Receive the side directed downwardly of water ring pipe 407 and be evenly arranged with multiple receipts water inlets 409.L shapes skirt 408 One end connect with water ring pipe 407 is received, the other end passes tank body 401 and stretches into plug-in water tank 405 It is interior.L shapes skirt 408 is located at the one end in the plug-in water tank 405 (hereinafter by the end name For upper end) on filter is installed.Water after purification first flows into receipts water ring by receipts water inlet 409 Pipe 407, then flow into L shapes skirt 408 from water ring pipe 407 is received, it is ensured that tank body 401 pinches purification Water afterwards uniformly flows out.
As shown in figure 5, being provided with water-level regulator, water-level regulator bag in plug-in water tank 405 Include outer tube 410, adjust inner core (not shown), screw mandrel 412, installing rack 413, handwheel 414 and handwheel seat 415, the bottom that outer tube 410 is fixed in plug-in water tank 405, L shape skirts 408 upper end is located in outer tube 410, and the 4th outlet pipe 406 is located at the outside of outer tube 410;Adjust Section inner core is set in outer tube 410 and can move up and down, during inner core movement is adjusted, The inwall of the outer wall and outer tube 410 that adjust inner core keeps sealing, to adjust and be fixed with screw mandrel on inner core 412, installing rack 413 is arranged in plug-in water tank 405 and is located at the top of outer tube 410, handwheel The lower end of seat 415 is fixedly installed on installing rack 413, and handwheel is installed in the upper end of handwheel seat 415 414, the middle part of handwheel 414 is provided with nut, and the upper end of screw mandrel 412 passes through nut.
Water-level regulator can adjust the height of water level in plug-in water tank 405, root in production process Factually border rotates and is moved down on the drive screw mandrel 412 of handwheel 414 to water quality and the demand of water yield change Dynamic, screw mandrel 412 drives regulation inner core to slide up and down in outer tube 410, to adjust plug-in water tank 405 freeboard.When the oil extraction deslagging in tank body 401 needs high level, regulation can be improved The height of inner core, the water level for making plug-in water tank 405 is improved;Low liquid level is needed in tank body 401 During draining, it is possible to decrease adjust the height of inner core, be beneficial to the discharge of water in tank body 401.Pass through Water-level regulator so that the oil slick in tank body 401 is all discharged by oil-collecting device, Bu Hui Accumulation is stopped in tank body 401, so as to further improve effluent quality.
Oil-collecting device in the present embodiment is the annular receipts oil formed around the inwall of tank body 401 Groove 424, the section of collection tank 424 is the U-shaped of opening upwards, is connected with collection tank 424 and stretches The collection tube 416 gone out outside tank body 401.
Continuing with Fig. 5, spraying deslagging device includes slag receiving trough 417, slag gathering hopper 418, receives slag Pipe 419 and wash tub pipe 420;The only upper end of slag receiving trough 417 is open, during bottom surface is offered for making The hole that the upper end of heart whirl cylinder 402 passes through, seals between Swirl cylinder 402 and hole wall, in The upper end of heart whirl cylinder 402 is located in slag receiving trough 417, and the bottom surface of slag receiving trough 417 is that one end is high The low inclined-plane in one end, i.e. left end in Fig. 5 is low, right-hand member is high;Slag gathering hopper 418 is arranged at receipts slag The outside of the bottom (i.e. left end) of groove 417;Receive slag pipe 419 to be connected on slag gathering hopper 418 simultaneously Stretch out outside tank body 401, and slag receiving trough 417, slag gathering hopper 418 are connected with slag pipe 419 is received. The top of Swirl cylinder 402 is fixed in the upper end of wash tub pipe 420, on wash tub pipe 420 Spraying nozzle is connected with, the lower end of wash tub pipe 420 passes outside tank body 401 and connects with tap water Connect.
Continuing with Fig. 5, the spraying nozzle in the present embodiment includes upper strata spraying nozzle 421 with Layer spraying nozzle 422.Upper strata spraying nozzle 421 at least two, and washing-round water pipe 420 Upper end outside it is uniform install, the flushing of the lower section between two neighboring upper strata spraying nozzle 421 One lower floor's spraying nozzle 422 is set on water pipe 420.Upper strata spraying nozzle 421 and lower floor spray Shower nozzle 422 is in upper and lower two-layer and the arrangement that misplaces, and makes developing result more preferable.When actual production runs, When the scum silica frost thickness on the top of center whirl cylinder 402 is less, density is lighter, can be merely with lower floor Spraying nozzle 422;When scum silica frost thickness is thicker, then upper strata spraying nozzle 421 and lower floor's spraying spray 422 can use simultaneously.
As shown in figure 5, mud discharging device can adopt Chinese patent Authorization Notice No. for A kind of sludge removing device for oil tank of CN2516279Y.Its structure and principle will not be described here.Separately Outward, overflow pipe 423 is fixed with inside the tank body 401 of the outer upper end position of slag receiving trough 417, The upper port of overflow pipe 423 and the intracavity inter-connection of tank body 401, the middle part of overflow pipe 423 is worn Cross tank body 401 to extend outside tank body 401, the lower end of overflow pipe 423 is connected to Sewage Disposal On blowdown line, when the water yield of coming of the 4th water inlet pipe 404 increases suddenly, spraying is exceeded in the short time During the process load of slagging-off knockout drum, unnecessary water is flowed out outside tank body 401 from overflow pipe 423, Prevent untreated water to be directly entered plug-in water tank 405, cause effluent quality to be deteriorated.
The course of work of spraying slagging-off knockout drum is introduced with reference to Fig. 5:First, by The outlet pipes 306 of recovered water Jing the 3rd after Cyclonic reactor process enter the 4th water inlet pipe 404, so Afterwards enter Swirl cylinder 402 in middle part, current the internal rotating of Swirl cylinder 402 to Lower flowing, reaction after recovered water is sufficiently mixed with Water purification medicament forms the dregs of fat, and the dregs of fat revolve at center It is gradually disengaged and moves up with the current after process in flow cartridge 402, rises to Swirl cylinder The dregs of fat at 402 tops form scum layer;Recovered water reacts the oil slick for generating with Water purification medicament and enters receipts Oil groove 424, and discharged outside tank body 401 by collection tube 416.The impurity such as the silt of recovered water, And recovered water reacts the sludgd deposition for generating to the bottom of tank body 401 with Water purification medicament, passes through Negative pressure mud exhauster is collected and Jing discharge pipelines 425 are discharged outside tank body 401.From wash tub pipe 420 Pressure water sprayed by spraying nozzle, the scum silica frost that will accumulate in the top of Swirl cylinder 402 blows Be swept in slag receiving trough 417, the scum silica frost in slag receiving trough 417 along slag receiving trough 417 bottom bevel by In gradually sliding onto slag gathering hopper 418, discharged outside tank body 401 by receiving slag pipe 419.Finally, locate Water after reason is flowed in tank body 401 by connected entrance 403, and Jing receives water ring pipe 407 and L-type is drawn Pipe 408 is entered and adjusts inner core, and the water flowed out by regulation inner core upper end enters plug-in water tank 405, and The outlet pipes 406 of Jing the 4th are discharged into subsequent processing device.
As shown in fig. 6, slagging-off knockout drum is negative pressure deslagging knockout drum, negative pressure deslagging knockout drum bag Tank body 501 and the cylinder in tank body 501 502 are included, the upper end of cylinder 502 is open, lower end Fix and seal with tank body 501, ring cavity 517, cylinder are formed between tank body 501 and cylinder 502 502 bottom has the outlet 503 of at least one and the intracavity inter-connection of tank body 501;Cylinder 502 Interior top is installed with receipts slag funnel 504, and the bottom of receipts slag funnel 504 is connected with stretches out tank Scum pipe 505 outside body 501;The middle part of cylinder 502 is connected with the 5th water inlet pipe 506, and the 5th Water inlet pipe 506 is stretched in cylinder 502 along the tangential direction of cylinder 502;The top of tank body 501 Form the collection tank 508 of annular on inwall, the section of collection tank 508 be it is U-shaped and opening up, The collection tube 509 stretched out outside tank body 501 is connected with collection tank 508;The middle part of ring cavity 517 is consolidated Surely there is the packing layer 507 of annular, the receipts water of annular is set in the ring cavity 517 of the top of packing layer 507 Pipe 510, to receive and be connected with the 5th outlet pipe 511 stretched out outside tank body 501 on water pipe 510.
Continuing with Fig. 6, the bottom of tank body 501 is fixed with first annular in ring cavity 517 Dredging tube 512, the first dredging tube 512 is two for arranging up and down in the present embodiment.Packing layer 507 are fixedly arranged above the second annular sludge-suction pipe 513.First annular dredging tube 512 and second is annular Mud-suction hole is distributed with the bottom surface of dredging tube 513.First annular dredging tube 512 and second The discharge pipeline 514 stretched out outside tank body 501 is respectively communicated with annular sludge-suction pipe 513.Two first Annular sludge-suction pipe 512 shares a discharge pipeline 514 after can connecting, it is also possible to respectively with a spoil disposal Pipe 514.First annular dredging tube 512 is identical with the structure of the second annular sludge-suction pipe 513 and for existing Public equipment, will not be described here in technology.
In addition, as shown in fig. 6, setting in the tank body 501 of the top of the receipts water pipe 510 of annular Overfall is equipped with, overflow pipe 515 is fixedly connected with overfall, when entering in negative pressure deslagging knockout drum When the water yield is excessive, can be by outside the drain tank of overflow pipe 515, preventing raw water direct Into water pipe 510 is received, effluent quality is affected.And, it is fixed with the middle part inwall of tank body 501 Annular baffle ring 516, on annular baffle ring 516, annular baffle ring 516 is played and propped up packing layer 507 Fixed and spacing packing layer 507 the effect of support.U-shaped ventilation is installed with packing layer 507 Balance pipe 217, U-shaped ventilation balance pipe 217 makes one part be located at filler through packing layer 507 The top of layer 507, a part is positioned at the bottom of packing layer 507.U-shaped ventilation balance pipe 217 is used Pressure between the ring cavity 517 of balance packing layer 507 upper and lower, prevents from building the pressure.
Packing layer 507 can adopt Propylene polymerization inclined plate packing layer, and Propylene polymerization swash plate has excellent Good chemical property, stability is good, proportion is little, surface is smooth and slip effect is good, it is to avoid Filler crushes leakage.
The course of work of negative pressure deslagging knockout drum is introduced with reference to Fig. 6:It is anti-by eddy flow The outlet pipes 306 of recovered water Jing the 3rd after answering device to process enter the 5th water inlet pipe 506, and by the Five water inlet pipes 506 are tangentially entered in cylinder 502, and recovered water is revolved in cylinder 502 by waterpower Stream fully reacts with Water purification medicament, makes the flco that reaction is generated by the solution gas discharged in sewage Float up to the water surface and be condensed into scum silica frost, the current of bottom enter ring cavity from the outlet 503 of cylinder 502 517, then Jing after settlement separate clear water passes through packing layer 507 from bottom to top, further intercept Flco in water, makes water further purify after packing layer 507, the top of packing layer 507 Clear water after purification is entered receives water pipe 510, most after the 5th outlet pipes of Jing 511 discharge outside tank body 501. The scum silica frost of floating is introduced in receipts slag funnel 504, then discharges tank body 501 by scum pipe 505 Outward.Oil slick is discharged outside tank body 501 after the collection of collection tank 508 by collection tube 509.Tank body The sludge of 501 bottoms and the overburden of packing layer 507 passes through respectively the He of first annular dredging tube 512 Second annular sludge-suction pipe 513 is periodically discharged outside tank body 501.
The present invention discloses a kind of method for treating water cut out, comprises the steps:
1) oil removing is settled:Using the sedimentation oil removing pot shown in Fig. 1 using oil in recovered water, water and The difference of aerosol density, most oil floats, float is sunk and by natural separation, remained Remaining small part oil and float carries out next program;
2) cyclone reaction oil removing:Jing step 1) process after recovered water enter foregoingization Learning adjustment cyclone reaction segregation apparatuss, and add 2-3 kinds Water purification medicament carries out chemical cyclone reaction, Oil and float in recovered water is effectively caught by Water purification medicament grows up with coalescence, and sludge sinks, Scum silica frost floats, and efficiently separates, and realizes the purification of effluent quality.
The method for treating water cut out of the present invention utilizes two stages for the treatment of facility, and the first order is using sedimentation The Physical of oil removing pot is processed, and the second level is to be separated using cyclone reaction chemistry adjustment cyclone reaction The chemical Treatment of device, to make up the deficiency of simple physical method process, can take into account water quality net Change and water stabilization, meet the increasingly strict environmental requirement of reuse up to standard after produced water treatment.
Specifically, thickened oil recovery high-temperature produced water initially enters vertical vertical-flow sedimentation oil removing pot, Sedimentation oil removing pot arranges uniform collection water distribution system, and using upper water distribution, under catchment by the way of, Water distribution and the radiant type horn mouth that adopt that catchments, it is ensured that water distribution and the uniformity catchmented.In perpendicular stream After recovered water is flowed out upwards from sparge pipe with certain speed under state, oil is except because of the floating of itself Outside the ascent rate in water for being obtained, also promoted by vertical speed on current direction, oil will Oil reservoir is faster reached, the required separation sedimentation time shortens.And oil is touched during rising Hit coalescence and form floating oil droplet and directly become greatly, and during floating with carried secretly by current All the time the process of convection current collision coalescence is there is between the oil droplet for flowing downward, is agglomerated into oil big Oil droplet and be more conducive to float, shorten floating interval of floating dock, improve oil removal efficiency, float up on recovered water The oil on surface is entered in the collection tank of the cell wall of sedimentation oil removing pot, is then discharged out settling oil removing pot. Sludge settling in recovered water to the bottom Jing negative pressure mud exhauster for settling oil removing pot is discharged.
Recovered water Jing after sedimentation oil removing pot is processed enters chemistry adjustment cyclone reaction segregation apparatuss, According to the characteristic of recovered water, the Water purification medicament for needing to add is filtered out, while testing out when adding Between interval with hybrid reaction intensity, recycle chemistry adjustment cyclone reaction segregation apparatuss turbulent flow by The vortex field that level diminishes, the mixing for Water purification medicament and recovered water in technique provides power, After reaction product flco is separated from water by way of coagulant precipitation, realizes water purification. The a small amount of oil for containing in recovered water simultaneously floats and is collected.
Chemistry adjustment cyclone reaction segregation apparatuss can adopt combination type (only one device, That is the cyclone reaction knockout drum illustrated in Fig. 3), it would however also be possible to employ split type (fills comprising two Put, i.e. the spraying slagging-off knockout drum illustrated in the Cyclonic reactor illustrated in Fig. 4 and Fig. 5 or Fig. 6 In the combination of negative pressure deslagging knockout drum that illustrates).For containing polymer, super-viscous oil, SAGD extraction Water oil bead diameter is little, viscosity big, and profit is not readily separated;Gassiness recovered water is due to solution gas in water Higher and unstable, above reason easily causes flocs float, and scum layer gathers for a long time in tank top Collection causes the increase of scum layer thickness, scum silica frost Jing outlets to exit into next section of flow process, cause tank Water outlet oil-containing, suspension content are exceeded, and the situation for bringing processing pressure for backend flow, adopt With the spraying slagging-off knockout drum illustrated in Fig. 5.Slag receiving trough is set in tank deck, slag receiving trough center sets water Atomizing nozzle.Scum silica frost is purged to slag receiving trough by spraying, is then then exhausted from outside tank, sludge settling To the bottom of spraying slagging-off knockout drum, and outside Jing negative pressure mud discharging device drain tanks.Shown in Fig. 6 Negative pressure deslagging knockout drum is then to collect the scum silica frost for floating up to jar liquid surface, and drain tank by suction function Outward, outside the negative pressure mud discharging device drain tank of the bottom of sludge settling to negative pressure deslagging knockout drum, and Jing, Guarantee effluent quality.
After the two stages for the treatment of of the present invention, water outlet oil-containing and float can reach recovered water Within 15mg/L, rear end meets reuse requirement by being aided with filtration.Solve the low profit of high temperature close The high emulsifiability recovered water oil bead diameter of degree difference is little, profit stability is strong, conventional process flow difficulty Big problem, enables the recovered water produced in heavy oil development process up to standard and is back to boiler, The outer pollution discharging environment of recovered water (sewage) produced in heavy oil development is avoided, while having saved clear Water produces huge economic benefit.
The representative embodiment of the present invention has obtained detailed description.These detailed descriptions without In limiting the scope of the present invention.Those skilled in the art can the present invention essence and In protection domain, various modifications or equivalent are made to the present invention, this modification or equivalent are replaced To change also should be regarded as and be within the scope of the present invention.Therefore, the spy in foregoing detailed description The combination levied is dispensable for implementing of the invention in most broad scope, and alternatively Ground only provides teaching to the representative embodiment of the special detailed description of the present invention.Additionally, in order to Obtain being attached with for the present invention and use embodiment, a variety of spies of teaching are given in the description Levying to combine in several ways, but these modes are next without especially being included.

Claims (17)

1. oil removing pot, including tank body are settled, it is characterised in that be provided with the tank body hollow Center tubing string, distributing water room, oil trap and mud discharging device;
The center tubing string is vertically interior located at the tank body and at least lower end seals, the central canal The top of post is communicated with the first outlet pipe extended to outside the tank body, and bottom is communicated with positioned at institute The multiple pipelines that catchment in tank body are stated, on the pipeline that catchments water inlet is provided with;
The distributing water room is connected with the multiple water distribution pipelines in the tank body and extends to described The first water inlet pipe outside tank body, on the water distribution pipeline outlet is provided with;
The oil trap forms annular around the inwall of the tank body;
The mud discharging device is arranged at the bottom in the tank body.
2. sedimentation oil removing pot according to claim 1, it is characterised in that match somebody with somebody described in each Water lines include a distributing main perpendicular to the center tubing string, are vertically connected at described matching somebody with somebody A water distribution primary branch on water conduit tube and many be connected on the water distribution primary branch are with moisture Arm, per water distribution branched pipe described in root on respectively have the outlet.
3. sedimentation oil removing pot according to claim 2, it is characterised in that the outlet In horn-like and opening upwards.
4. sedimentation oil removing pot according to claim 2, it is characterised in that the distributing water room It is set on the center tubing string, many distributing mains of multiple water distribution pipelines are uniform In the distributing water room.
5. sedimentation oil removing pot according to claim 1, it is characterised in that each described collection Water lines include perpendicular to one of center tubing string collection water conduit tube, are vertically connected at the collection One on water conduit tube catchments and primary branch and is connected to many collection moisture catchmented on primary branch Arm, per the branched pipe that catchments described in root on respectively have the water inlet.
6. sedimentation oil removing pot according to claim 5, it is characterised in that the water inlet In horn-like and Open Side Down.
7. produced water treatment system, including oil removing pot and chemistry adjustment cyclone reaction segregation apparatuss, Characterized in that, the oil removing pot is the sedimentation oil removing any one of claim 1 to 6 Tank, first outlet pipe is connected to the chemistry adjustment cyclone reaction segregation apparatuss.
8. produced water treatment system according to claim 7, it is characterised in that describedization Adjustment cyclone reaction segregation apparatuss are learned for cyclone reaction knockout drum, the cyclone reaction knockout drum bag Include tank body and the cyclone reaction central tube being longitudinally disposed in the tank body, the cyclone reaction center Cylinder lower end and the tank body intracavity inter-connection, the cyclone reaction central tube from top to bottom according to It is secondary to be divided into first order cyclone reaction section, second level cyclone reaction section and third level cyclone reaction section;
It is fixedly connected with second extend in the first order cyclone reaction section on the tank body to enter Water pipe, the second water purification agent pipe extending in the second level cyclone reaction section and it extend into described Flocculant pipe in third level cyclone reaction section, on second water inlet pipe the first water purification is communicated with Agent pipe;
Top in the tank body is fixedly installed collector pipe and positioned at the top of the collector pipe Oil collecting pipe, offers water inlet on the collector pipe, be connected with the collector pipe and stretch out described The second outlet pipe outside tank body;Oil-in is offered on the oil collecting pipe, is connected on the oil collecting pipe It is connected to the flowline stretched out outside the tank body;
The bottom of the tank body is connected with discharge pipeline;
First outlet pipe is connected with second water inlet pipe.
9. produced water treatment system according to claim 8, it is characterised in that the collection Water pipe and oil collecting pipe are annular, and the collector pipe and oil collecting pipe are enclosed within the cyclone reaction Outside heart cylinder, the water inlet is to be distributed in multiple on the collector pipe, and the oil-in is equal It is distributed in multiple on the oil collecting pipe.
10. produced water treatment system according to claim 8, it is characterised in that described The axis direction of the second water inlet pipe is tangent with the inwall of the cyclone reaction central tube.
11. produced water treatment systems according to claim 7, it is characterised in that described Chemistry adjustment cyclone reaction segregation apparatuss include Cyclonic reactor and slagging-off knockout drum;
The Cyclonic reactor includes tank body, is provided with the tank body for the tank body to be divided It is divided into the dividing plate of first order reaction chamber positioned at bottom and superposed second level reaction chamber;
Water inlet is offered on the tank body of the correspondence first order reaction chamber, is set in the water inlet It is equipped with and stretches into the 3rd water inlet pipe that the first order reacts intracavity;
Water purification medicament is offered on the tank body of the correspondence second level reaction chamber add mouth and water outlet Mouthful, the Water purification medicament adds and the medicament throwing for stretching into the second level reaction intracavity is provided with mouth Plus pipe, it is provided with the outlet and stretches into the 3rd outlet pipe that intracavity is reacted in the second level, The adding of agent pipe is located at the bottom of the second level reaction chamber, and the 3rd outlet pipe is located at The top of the second level reaction chamber;
Through hole is offered on the dividing plate, the through hole is by connecting tube and the adding of agent pipe Connection;
The bottom of the tank body is provided with blowdown blow-down pipe;
3rd water inlet pipe is connected with first outlet pipe.
12. produced water treatment systems according to claim 11, it is characterised in that described Slagging-off knockout drum is spraying slagging-off knockout drum, and the spraying slagging-off knockout drum includes tank body, center Whirl cylinder, spraying deslagging device, oil-collecting device, mud discharging device and water collector;
The Swirl cylinder is located in the tank body and upper end is open, and lower end is solid with the tank body Determine and seal, ring cavity, the Swirl are formed between the Swirl cylinder and the tank body The bottom of cylinder has the connected entrance of at least one and the intracavity inter-connection of the tank body, the center Be connected with the 4th water inlet pipe in the middle part of whirl cylinder, one end of the 4th water inlet pipe be located at it is described in In heart whirl cylinder, the other end is connected with the 3rd outlet pipe;
The spraying deslagging device is arranged at the upper outside of the Swirl cylinder;
The oil-collecting device is arranged in the corresponding inner tank wall in the Swirl cylinder upper end;
The mud discharging device is arranged at the position of the tank base correspondence connected entrance;
The water collector includes being installed on the plug-in water tank of the tank body outer upper and receipts water Pipe, the receipts water pipe includes receiving water ring pipe and L shape skirts, and the receipts water ring pipe is located in tank body Middle part and be placed on outside the Swirl cylinder;One end of the L shapes skirt and the receipts water ring Pipe is connected, and the other end passes the tank body and stretches in the plug-in water tank, the plug-in water tank Inside it is connected with the 4th outlet pipe.
13. produced water treatment systems according to claim 12, it is characterised in that described Be provided with water-level regulator in plug-in water tank, the water-level regulator include outer tube, adjust inner core, Screw mandrel, installing rack, handwheel and handwheel seat, the bottom that the outer tube is fixed in plug-in water tank, The L shapes skirt is located in the outer tube, and the 4th outlet pipe is located at the outside of the outer tube; The regulation inner core is set in the outer tube and can move up and down, and the regulation inner core Outer wall keeps sealing with the inwall of the outer tube, and on the regulation inner core screw mandrel is fixed with, The installing rack is located at the top of the outer tube, and the lower end of the handwheel seat is installed on the installation On frame, the handwheel is installed in the upper end of the handwheel seat, and the handwheel middle part is provided with and can make The nut that the screw mandrel is passed through.
14. produced water treatment systems according to claim 12, it is characterised in that described The axis direction of the 4th water inlet pipe is tangent with the inwall of the Swirl cylinder, and the described 4th enters The outlet of water pipe is on the inwall of the Swirl cylinder;The oil-collecting device is around described The cannelure that the inwall of tank body is formed, is connected with the receipts stretched out outside the tank body on the cannelure Oil pipe.
15. produced water treatment systems according to claim 12, it is characterised in that described Spraying deslagging device includes slag receiving trough, slag gathering hopper, receives slag pipe and wash tub pipe;
The upper end of the Swirl cylinder is located at the slag receiving trough through the bottom surface of the slag receiving trough Interior, the bottom surface of the slag receiving trough is the low inclined-plane of higher end;
The slag gathering hopper is arranged at the outside of the bottom of the slag receiving trough;
The receipts slag pipe is connected on the slag gathering hopper and stretches out outside the tank body;
The top of the Swirl cylinder, the flushing water are fixed in the upper end of the wash tub pipe Spraying nozzle is connected with pipe, the lower end of the wash tub pipe is passed outside the tank body.
16. produced water treatment systems according to claim 11, it is characterised in that described Slagging-off knockout drum is negative pressure deslagging knockout drum, and the negative pressure deslagging knockout drum includes tank body and setting Cylinder in the tank body, the upper end of the cylinder is open, and lower end is fixed simultaneously with the tank body Sealing, forms ring cavity between the cylinder and the tank body, the bottom of the cylinder has at least One with the outlet of the intracavity inter-connection of the tank body;Top in the cylinder is installed with Slag funnel is received, the bottom of the receipts slag funnel is connected with the scum pipe stretched out outside tank body;The cylinder The 5th water inlet pipe is connected with the middle part of body;The receipts oil of annular is formed in the upper inside wall of the tank body Groove, is connected with the collection tube stretched out outside the tank body on the collection tank;The middle part of the ring cavity It is fixed with the packing layer of annular;The receipts water pipe of annular is set in the ring cavity above described filler layer, The 5th outlet pipe stretched out outside the tank body is connected with the receipts water pipe;The tank base is consolidated Surely there is the first annular dredging tube in the ring cavity, described filler layer is fixedly arranged above second Annular sludge-suction pipe.
17. method for treating water cut out, comprise the steps:
1) oil removing is settled:Using sedimentation oil removing pot using oil, water and aerosol density in recovered water Difference, it is most oil float, float sink and by natural separation, remaining small part Oil and float carry out next program;
2) cyclone reaction oil removing:Jing step 1) process after recovered water enter cyclone reaction chemistry Adjusting cyclone reaction segregation apparatuss, and add 2-3 kinds Water purification medicament carries out chemical cyclone reaction, Having in recovered water is effectively caught with float by Water purification medicament grows up with coalescence, and sludge sinks, Scum silica frost floats, and efficiently separates, and realizes the purification of effluent quality.
CN201510734784.5A 2015-10-30 2015-10-30 Sedimentation oil removal tank, produced water treatment system and treatment method Pending CN106621484A (en)

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CN201510734784.5A CN106621484A (en) 2015-10-30 2015-10-30 Sedimentation oil removal tank, produced water treatment system and treatment method

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CN201510734784.5A CN106621484A (en) 2015-10-30 2015-10-30 Sedimentation oil removal tank, produced water treatment system and treatment method
CA2917959A CA2917959C (en) 2015-10-30 2016-01-15 Settling oil removal tank, system and method for produced water treatment

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