CN205095472U

CN205095472U - Subside and remove oil tank and extraction water processing system

Info

Publication number: CN205095472U
Application number: CN201520865883.2U
Authority: CN
Inventors: 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
Original assignee: Xinjiang Petroleum Engineering Design Co Ltd
Current assignee: China National Petroleum Corp; CNPC Xinjiang Petroleum Engineering Co Ltd; China Petroleum Engineering and Construction Corp
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2016-03-23
Anticipated expiration: 2025-10-30

Abstract

The utility model discloses a subside and remove oil tank and extraction water processing system, subside except that the oil tank including a jar body, jar internal be equipped with central tubular column, water distribution room, oil trap and locate a jar body bottom and arrange a mud device, it is sealed that jar internal and at least lower extreme is located to the center tubular column, and the upper portion intercommunication of central tubular column has first outlet pipe, and the lower part intercommunication has a plurality of pipelines that catchment, and the collector pipe is equipped with the water inlet on the road, the water distribution room is connected with a plurality of water distribution pipelines and first inlet tube, and the water distribution pipeline is equipped with the delivery port, the oil trap forms the annular around jar inner wall of the body. The utility model discloses a subsiding and removing the vertical perpendicular STREAMING storage tank of oil tank adoption, set up even collection distribution system, the oil, water and the suspended solid that make the aquatic under perpendicular stream mode are because of the different separation naturally of density. The utility model discloses a chemistry adjustment whirl reaction separator that extraction water processing system removed oil tank and secondary treatment by subsiding of primary treatment forms, and the back is handled through the two -stage to extraction water, and it can reach within the 15mgL to go out water oiliness and suspended solid.

Description

Sedimentation oil removing pot and produced water treatment system

Technical field

The utility model belongs to oil field development ground surface works dense oil extraction wastewater processing technology field, is particularly applied in the produced water treatment of the high temperature produced in domestic and international SAGD (SteamAssistedGravityDrainage SAGD) heavy oil development, low profit density contrast and high emulsifiability.

Background technology

The Treatment Techniques of Extracted Water from Crude Oil Production of the current current international practice is mainly the oil removing process such as gravitational settling oil removing, air supporting, degreaser cyclone, filtration, and desalination and sofening treatment are carried out in water outlet again, then for boiler feedwater.Because the recovered water temperature of thickened oil recovery is higher, be unsuitable for utilizing Biochemical method, physics and the physical chemistry processing method of main use have:

Physical: Physical mainly utilizes the impurity such as oil, solid suspended particle in physical principle Separation of Water, Physical mainly comprises gravity separation, degreaser cyclone removal method, the separation of flat flow grease removal tank and filtration method.

Physical-chemical process: for exist in recovered water dispersed oil, oil emulsion and with dispersed, solubilised state, colloidal substance exist suspension time, can not Physical be adopted separately to remove, need carry out chemistry and physical bond method removal.Mainly comprise the methods such as coagulating sedimentation, By Bubble-floating Method, chemical agent reaction tank.

The oil-containing of the water inlet of general produced water treatment system is 2000ppm, suspension is 300ppm, the total water outlet of system requires that produced water treatment system common technology flow process is oil removing pot+air floatation machine+filter, and the treatment facility being directed to every section of flow process is slightly different for oil-containing and suspension are all lower than 5ppm.Current existing problems mainly contain two aspects, and one is need to be further improved as the oil removing pot treatment effeciency of the first order, and two is need the treatment process applying efficient stable more to make up the deficiency of simple physical method, prior art feature and weak point as follows:

Current oil removing pot is as the first order treatment facility of oil removing process, receive oil-containing 2000ppm, suspension is the recovered water raw water quality of 300ppm, design effluent index is generally that oil-containing is less than 300ppm, suspension is less than 150ppm, the design oil removal rate of oil removing pot generally reaches 90%, removal efficiency reaches 50%, but investment is less than rear end air supporting and filter, belongs to oil removing system operation first concern up to standard factor.Cause rear end air supporting and filter plant to affect total system effluent quality because oil removing pot water outlet is not up to standard, and then destruction is brought to desalting facilities such as the MVC (falling film evaporation desalination) of rear end, and will the maintenance cost of great number be caused.Therefore ensureing to be in whole oil removing process and desalination process is the key point alleviating back-end processing pressure, ensure rear end stable operation as the treatment effect of the oil removing pot of first order treatment facility foremost.External conventional oil removing pot mainly contains following two kinds of forms at present:

Flat flow oil removing pot: this oil removing pot is horizontal-flow type, and tank inside is provided with vertical baffle, and tank body is divided into a few part, and adjacent portions sets up flow channels separately, an overall formation horizontal baffled oil removing pot.Owing to separating a few part, therefore the longer flow channels of interior formation is amassed at limited tank circumferential section, when current flow through, oil droplet floats up to ullage because density is less than water, from water inlet to delivery port, the oil droplet of greater particle size completes floating overall process successively, is collected discharge at oil removing pot top, and less oil droplet has failed floating removal process and enter next stage flow process with current because ascent rate is little.

Common perpendicular stream oil removing pot: this oil removing pot is vertical oil removing tank, current are vertically flow on the whole, and intake by the water tank water outlet on tank central tube, water tank water outlet adopts pipeline water outlet, current Vertical dimension after sparge pipe distributes is dirty, finally enters the receipts mouth of a river at the bottom of tank and collects outside rear drain tank.

These oil removing pots for recovered water only considered the oil droplet floating effect that profit density contrast brings; but do not do basic improvement from the improvement of oil droplet coarse, raising ascent rate aspect; and poor to water fluctuation adaptability, need for evenly collecting water distribution, improve current state in tank, improve the aspects such as sludge discharge way and be optimized

On the other hand, external most for the treatment of Technology for Petroleum Water Flooding is more single, be mainly physics flow process and air supporting flow process, to water fluctuation, water quality inferiority the opposite sex adaptability poor, the situation that instability due to the gentle emersion water of leading portion oil removing pot causes filter leaching material to pollute and stops using happens occasionally, and special solution is not had for system corrosion, fouling, reagent cost is higher, and the medicament coagulating sedimentation process used at present is immature, is not suitable with the oil field produced requirement that water treatment engineering construction efficiently processes, water stabilization is up to standard.

In sum, in prior art mainly there is following problem in produced water treatment:

1) oil removing pot aspect:

A, water distribution of catchmenting are uneven: above two kinds of oil removing pots all adopt the mode of the large stock water inlet of water inlet, when current enter in tank, disturbance is larger, do not have uniform water distribution can affect the fluidised form of water, flow-disturbing is formed in water, the shearing force of disturbance current multiple directions makes oil droplet except the ascent rate that buoyancy brings, also have the speed in other directions, within the limited time, have impact on the height that floats, therefore under the requirement of design oil removal rate, improve the requirement of the time of staying.And do not have uniform water distribution to also reduce adaptive capacity to carrying out water slug, easily cause reunion shape crude oil to fail distribution and come and just enter oil removing pot, directly enter lower end flow process because sedimentation capacity is not enough, lower end equipment is polluted.Water after oil removing is owing to failing uniform collection, and easily form short stream, sump oil and mud are easily assembled in the place that near water exit end delivery port, fluidised form is bad, bring effluent quality to fluctuate.

B, without efficient spoil disposal facility: at present in these two kinds of oil removing pots without special spoil disposal facility, in silt, organic matter colloid and water that upstream is brought at the bottom of settled sludge equal natural subsidence to tank, arrange the mode that sewage draining exit connects the regularly clear tank operation of tank car clearly at present to remove, the water at the bottom of a discharge section tank when mud is less, the clear full tank when heavy mud is larger.This mode of operation can not all remove mud at the bottom of tank on the one hand, still can pile up at the mud of clear tank mouth opposite side, need on the other hand to stop production, or oil removing pot generally will build two, increases investment during clear full tank.

C, flat flow oil removing pot fluidised form are undesirable.Because water and oil droplet are co-flow, oil droplet is except the ascent rate brought due to buoyancy, and also have a horizontal pace by about flow shear, therefore oil droplet is actual is parabola floating track.Because flow rate of water flow is much larger than floating flow velocity, make in limited floating height, level advances track longer, higher to runner length requirement, when lifting height is constant, increases oil removing pot sectional area, the corresponding prolongation of effective time of staying.

2) technological process aspect: existing oil removing pot and air supporting flow process can not guarantee that stable effluent quality is qualified, larger to filter pressure.Part crude oil dehydrating effect is bad, makes sewage oil content large, impacts sewage treatment facility, and the gravity oil-removing of front end coagulation and the air supporting of two stage treatment and degreaser cyclone go out water unstable.Along with the popularization on a large scale of multiple secondary, tertiary oil recovery technology, recycle-water mixes the process of produced water treatment system, and recovered water viscosity is increased, and oil emulsion is more stable, and profit density contrast is little, and air supporting and cyclone separator are difficult to reach ideal effect.The defect that the removal efficiency of ubiquity small granular suspended matters and nominal particle size oil is low in equipment, processing pressure is all married again filter by above many reasons, cause filter clogging to affect treatment effect, and to carry out oil mass defective and make filtrate pollute situation about cannot run to happen occasionally because of front end.

3) produced water treatment system is without effective ion balanced measure, and corrosion and scaling problem is serious.Because oil removing pot+air supporting flow process only carries out Physical process to recovered water, can not effectively reduce incrustation ions such as calcium magnesium in water, oil removing system scale problems is given prominence to, and scale remover dosing cost is large.

4) chemical treatment technology is urgently optimized.In view of physics flow process is to the deficiency of stable water outlet and antiscale ability, part oil field starts to adopt the technique of chemical agent reaction tank to solve the problems referred to above, but because Applicative time is shorter, be only the technique of chemical agent reaction flocculation basin, do not form effective, integrated dosing Reaction Separation technology and equipment.Flocculation tank cost is high, constructional difficulties.During method process oil-polluted water with chemical coagulation sedimentation, need to add a large amount of Water purification medicament, thus form a large amount of flcos, become mud after settling of floccus, directly discharged by after sedimentation, the performance of Water purification medicament does not utilize completely, and the flco formed is loose, and sludge settling property is poor, is unfavorable for the processed of follow-up mud, therefore inefficiency, work quality is poor, cost is high.

Utility model content

In view of the above-mentioned problems in the prior art, technical problem to be solved in the utility model is to provide a kind of sedimentation oil removing pot effectively can removing oil in recovered water and suspended solid.

In order to solve the problems of the technologies described above, the utility model have employed following technical scheme: sedimentation oil removing pot, comprises tank body,

The center tubing string of hollow, distributing water room, oil trap and mud discharging device is provided with in described tank body;

Described center tubing string is vertically located at also at least lower end sealing in described tank body, the top of described center tubing string is communicated with the first outlet pipe extended to outside described tank body, bottom is communicated with the multiple pipelines that catchment being positioned at described tank body, described in catchment on pipeline and be provided with water inlet;

Described distributing water room is connected with the multiple water distribution pipeline being positioned at described tank body and the first water inlet pipe extended to outside described tank body, and described water distribution pipeline is provided with delivery port;

Described oil trap forms annular around the inwall of described tank body;

Described mud discharging device is arranged at the bottom in described tank body.

As preferably, each described water distribution pipeline comprises perpendicular to a distributing main of described center tubing string, many water distribution branched pipes being vertically connected at a water distribution primary branch on described distributing main and being connected on described water distribution primary branch, and water distribution branched pipe described in every root has described delivery port respectively.

As preferably, described delivery port is horn-like and opening upwards.

As preferably, described distributing water room is set on the tubing string of described center, and many described distributing mains of multiple described water distribution pipeline are distributed in described distributing water room.

As preferably, the pipeline that catchments described in each comprise perpendicular to described center tubing string the main that catchments, be vertically connected at described in catchment primary branch and many of catchmenting on primary branch described in being connected to of of catchmenting on main to catchment branched pipe, the branched pipe that catchments described in every root has described water inlet respectively.

As preferably, described water inlet is horn-like and Open Side Down.

The utility model discloses a kind of produced water treatment system simultaneously, and comprise oil removing pot and chemistry adjustment cyclone reaction separator, described oil removing pot is above-mentioned sedimentation oil removing pot, and described first outlet pipe is connected to described chemistry adjustment cyclone reaction separator.

As preferably, described chemistry adjustment cyclone reaction separator is cyclone reaction knockout drum, the cyclone reaction central tube that described cyclone reaction knockout drum comprises tank body and is longitudinally placed in described tank body, the lower end of described cyclone reaction central tube and the intracavity inter-connection of described tank body, described cyclone reaction central tube is divided into first order cyclone reaction section, second level cyclone reaction section and third level cyclone reaction section from top to bottom successively;

The flocculant pipe described tank body is fixedly connected with the second water inlet pipe extend in described first order cyclone reaction section, extending into the second water purification agent pipe in the cyclone reaction section of the described second level and extend in described third level cyclone reaction section, described second water inlet pipe is communicated with the first water purification agent pipe;

Top in described tank body is fixedly installed collector pipe and is positioned at the oil collecting pipe of top of described collector pipe, described collector pipe offers water inlet, described collector pipe is connected with the second outlet pipe stretched out outside described tank body; Described oil collecting pipe offers oil-in, described oil collecting pipe is connected with the flowline stretched out outside described tank body;

The bottom of described tank body is connected with discharge pipeline;

Described first outlet pipe is connected with described second water inlet pipe.

As preferably, described collector pipe and oil collecting pipe are annular, and described collector pipe and oil collecting pipe are all enclosed within outside described cyclone reaction central tube, and described water inlet is that it is multiple to be distributed on described collector pipe, and described oil-in is that it is multiple to be distributed on described oil collecting pipe.

As preferably, the axis direction of described second water inlet pipe and the inwall of described cyclone reaction central tube tangent.

As preferably, described chemistry adjustment cyclone reaction separator comprises Cyclonic reactor and slagging-off knockout drum;

Described Cyclonic reactor comprises tank body, is provided with the dividing plate for described tank body being divided into first order reaction chamber and the superposed second level reaction chamber being positioned at bottom in described tank body;

The tank body of corresponding described first order reaction chamber offers water inlet, in described water inlet, is provided with the 3rd water inlet pipe stretched in described first order reaction chamber;

The tank body of corresponding described second level reaction chamber offers Water purification medicament and adds mouth and delivery port, described Water purification medicament adds in mouth the adding of agent pipe being provided with and stretching in the reaction chamber of the described second level, the 3rd outlet pipe stretched in the reaction chamber of the described second level is provided with in described delivery port, described adding of agent pipe is positioned at the bottom of described second level reaction chamber, and described 3rd outlet pipe is positioned at the top of described second level reaction chamber;

Described dividing plate offers through hole, and described through hole is communicated with described adding of agent pipe by tube connector;

The bottom of described tank body is provided with blowdown blow-down pipe;

Described 3rd water inlet pipe is connected with described first outlet pipe.

As preferably, described slagging-off knockout drum is spraying slagging-off knockout drum, and described spraying slagging-off knockout drum comprises tank body, Swirl cylinder, spraying deslagging device, oil-collecting device, mud discharging device and water collector;

Described Swirl cylinder is positioned at described tank body and upper end is uncovered, lower end and described tank body are fixed and seal, ring cavity is formed between described Swirl cylinder and described tank body, the bottom of described Swirl cylinder has the connected entrance of the intracavity inter-connection of at least one and described tank body, the middle part of described Swirl cylinder is connected with the 4th water inlet pipe, one end of described 4th water inlet pipe is positioned at described Swirl cylinder, and the other end is connected with described 3rd outlet pipe;

Described spraying deslagging device is arranged at the upper outside of described Swirl cylinder;

Described oil-collecting device is arranged in inner tank wall corresponding to described Swirl cylinder upper end;

Described mud discharging device is arranged at the position of the corresponding described connected entrance of described tank base;

Described water collector comprises the plug-in water tank and receipts water pipe that are installed on described tank body outer upper, and described receipts water pipe comprises receives water ring pipe and L shape skirt, and described receipts water ring pipe is positioned at the middle part of tank body and is placed on outside described Swirl cylinder; One end of described L shape skirt is communicated with described receipts water ring pipe, and the other end passes described tank body and stretches in described plug-in water tank, is connected with the 4th outlet pipe in described plug-in water tank.

As preferably, water-level regulator is provided with in described plug-in water tank, described water-level regulator comprises urceolus, regulates inner core, screw mandrel, installing rack, handwheel and handwheel seat, described urceolus is fixed on the bottom in plug-in water tank, described L shape skirt is positioned at described urceolus, and described 4th outlet pipe is positioned at the outside of described urceolus; Described adjustment inner core is set in described urceolus and also can moves up and down, and the outer wall of described adjustment inner core and the inwall of described urceolus keep sealing, described adjustment inner core is fixed with described screw mandrel, described installing rack is positioned at the top of described urceolus, the lower end of described handwheel seat is installed on described installing rack, described handwheel is installed in the upper end of described handwheel seat, is provided with the nut that described screw mandrel can be made to pass in the middle part of described handwheel.

As preferably, the axis direction of described 4th water inlet pipe and the inwall of described Swirl cylinder tangent, and the outlet of described 4th water inlet pipe is positioned on the inwall of described Swirl cylinder; Described oil-collecting device is the cannelure formed around the inwall of described tank body, described cannelure is connected with the collection tube stretched out outside described tank body.

As preferably, described spraying deslagging device comprises slag receiving trough, slag gathering hopper, receipts slag pipe and wash tub pipe;

The upper end of described Swirl cylinder is positioned at described slag receiving trough through the bottom surface of described slag receiving trough, and the bottom surface of described slag receiving trough is the inclined-plane that higher end is low;

Described slag gathering hopper is arranged at the outside of the bottom of described slag receiving trough;

Described receipts slag pipe to be connected on described slag gathering hopper and to stretch out outside described tank body;

The top of described Swirl cylinder is fixed in the upper end of described wash tub pipe, and described wash tub pipe is connected with spraying nozzle, and the lower end of described wash tub pipe passes outside described tank body.

As preferably, described slagging-off knockout drum is negative pressure deslagging knockout drum, described negative pressure deslagging knockout drum comprises tank body and is arranged at the cylindrical shell in described tank body, the upper end of described cylindrical shell is uncovered, lower end and described tank body are fixed and seal, form ring cavity between described cylindrical shell and described tank body, the bottom of described cylindrical shell has the outlet of the intracavity inter-connection of at least one and described tank body; Top in described cylindrical shell is installed with receives slag funnel, and the bottom of described receipts slag funnel is connected with the scum pipe stretched out outside tank body; The middle part of described cylindrical shell is connected with the 5th water inlet pipe; The upper inside wall of described tank body is formed the collection tank of annular, described collection tank is connected with the collection tube stretched out outside described tank body; The middle part of described ring cavity is fixed with the packing layer of annular; The receipts water pipe of annular is set in the ring cavity above described packing layer, described receipts water pipe is connected with the 5th outlet pipe stretched out outside described tank body; Described tank base is fixed with the first annular dredging tube being positioned at described ring cavity, is fixed with the second annular sludge-suction pipe above described packing layer.

Compared with prior art, the beneficial effect of sedimentation oil removing pot of the present utility model, produced water treatment system and processing method is:

1, the sedimentation oil removing pot in the utility model adopts vertical vertical-flow storage tank, arrange and collect water distribution system uniformly, make under perpendicular stream mode the oil in recovered water, water and suspended solid because density is different natural separation, and there is receipts oil and spoil disposal function, thus greatly improve operating efficiency and the work quality of extracted water deoiling.Compare traditional flat flow oil removing pot oil removal efficiency and improve about 40%, save construction investment about 30%, efficiently solve the problem that in prior art, oil removing pot treatment effeciency is low.

2, produced water treatment system of the present utility model is primarily of the sedimentation oil removing pot as coagulation and the adjustment of the chemistry as two stage treatment cyclone reaction separator composition, the deficiency of simple physical method can be made up, along with the environmental requirement increasingly stringent of reuse up to standard after oily waste water treatment, and it is up to standard and effectively prevent the demand of corrosion and scaling from highlighting to produced water treatment system stable water outlet, the utility model takes into account purification of water quality and water stabilization, utilization effectively can control the chemistry adjustment cyclone reaction separator of recovered water corrosion and scaling, little to adapt to profit density contrast, containing the process of a certain amount of macromolecule organic or complicated water-based recovered water.By adding Water purification medicament (chemical agent), realize the improvement to recovered water water-based, and realize the hybrid reaction of oil, suspension and Water purification medicament by efficient consersion unit, and be effectively separated, realize water purification, and the one-tenth dirt in water and corrosive ion are controlled.

3, the utility model can be applied in the high temperature low profit density contrast and high emulsifiability produced water treatment produced in domestic and international SAGD heavy oil development, recovered water is after this two stages for the treatment of, within water outlet oil-containing and suspension can reach 15mg/L, rear end is aided with filtration can meet reuse requirement.Solve the problem that high temperature low profit density contrast high emulsifiability recovered water oil bead diameter is little, profit stability strong, conventional process flow difficulty is large, for heavy oil development solves the problem of outlet of recovered water treatment for reuse boiler up to standard, the wastewater disposition contaminated environment avoided, saves clear water simultaneously and produces huge economic benefit.

Accompanying drawing explanation

Fig. 1 is the structural representation of sedimentation oil removing pot of the present utility model.

Fig. 2 is the A-A direction view in Fig. 1.

Fig. 3 is the structural representation of the cyclone reaction knockout drum in produced water treatment system of the present utility model.

Fig. 4 is the structural representation of the Cyclonic reactor in produced water treatment system of the present utility model.

Fig. 5 is the structural representation of the spraying slagging-off knockout drum in produced water treatment system of the present utility model.

Fig. 6 is the structural representation of the negative pressure deslagging knockout drum in produced water treatment system of the present utility model.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.

As shown in Figure 1, sedimentation oil removing pot disclosed in embodiment of the present utility model, comprises tank body 101, is provided with the center tubing string 102 of hollow, distributing water room 103, oil trap 104 and mud discharging device 105 in tank body 101.Center tubing string 102 is vertically located at also at least lower end sealing in tank body 101.The lower end of the center tubing string 102 of the present embodiment is connected with the bottom of tank body 101 and seals, and upper end is connected with the top of tank body 101 and seals.The top of center tubing string 102 is communicated with the first outlet pipe 106 extended to outside tank body 101, and bottom is communicated with the multiple pipelines 107 that catchment being positioned at tank body 101, and the pipeline 107 that catchments is provided with water inlet 108.

Distributing water room 103 is connected with the multiple water distribution pipelines 109 being positioned at tank body 101 and the first water inlet pipe 110 extended to outside tank body 101, water distribution pipeline 109 is provided with delivery port 111.Oil trap 104 forms annular around the inwall of tank body 101.The opening upwards of oil trap 104, its cross section is U-shaped, specifically see Fig. 1.Oil trap 104 is communicated with flowline 112, flowline 112 stretches out outside tank body 101.Mud discharging device 105 is arranged at the bottom in tank body 101.

As a kind of preferred version of the present utility model, continue composition graphs 1 and reference Fig. 2, each water distribution pipeline 109 comprises perpendicular to center tubing string 102 and the distributing main 113, the many water distribution branched pipes 115 being vertically connected at a water distribution primary branch 114 on distributing main 113 and being connected on water distribution primary branch 114 that are communicated with center tubing string 102 inside, and every root water distribution branched pipe 115 has delivery port 111 respectively.As shown in Figure 1, delivery port 111 is horn-like and opening upwards.

Continue composition graphs 1, in order to make the even water distribution on the same cross section of tank body 101, distributing water room 103 should be arranged at the middle part of tank body 101, center tubing string 102 in the present embodiment is positioned at the center of tank body 101, distributing water room 103 is arranged on center tubing string 102, distributing water room 103 in the present embodiment is annular, and is enclosed within center tubing string 102.The many distributing mains 113 of multiple water distribution pipeline 109 are located in distributing water room 103 in uniform mode.

The pipeline 107 that catchments adopts the structure substantially identical with water distribution pipeline, namely each pipeline 107 that catchments comprises perpendicular to center tubing string 102 and the main that catchments be communicated with center tubing string 102 inside, is vertically connected at of catchmenting on main and catchments primary branch and be connected to many of catchmenting on primary branch and catchment branched pipe, and every root catchments on branched pipe and has water inlet 108 respectively.The structure of pipeline 107 of catchmenting can be understood with reference to Fig. 2.Water inlet 108 is horn-like and Open Side Down.

Mud discharging device 105 is for removing the sediment deposition thing in liquid.Mud discharging device employing Chinese patent Authorization Notice No. in the present embodiment is a kind of sludge removing device for oil tank of CN2516279Y.

In addition, as shown in Figure 1, be provided with one end in tank body 101 and be positioned at overflow pipe 117 outside tank body 101, with when liquid level is too high in tank body 101, by overflow pipe 117, the water in tank body 101 is discharged outside tank body 101.

Below in conjunction with Fig. 1, the course of work of sedimentation oil removing pot of the present utility model is introduced: recovered water flows into distributing water room 103 by the first water inlet pipe 110, then flow in tank body 101 through water distribution pipeline 109 and delivery port 111, first the oil droplet that in water, particle diameter is larger floats up to oil reservoir, and the oil droplet that particle diameter is less flows downward with water.In the process flowed downward, the little oil droplet of a part is due to promotion that is different from ascent rate in hydrostatic and water velocity gradient, continuous collision coalescence becomes large oil droplet and floats, the part oil droplet of supreme i enters through water inlet 108 pipeline 107 that catchments with water, then center tubing string 102 is entered, flow out outside tank body 101 through the first outlet pipe 106 again, enter down one program; Oil slick in oil reservoir flows into oil trap 104, then flows out through flowline 112; The mud of tank body 101 congregate enters mud discharging device 105, then discharges through blow-off pipe 116.

By the above-mentioned description to sedimentation oil removing pot, its beneficial effect known is:

1) due to delivery port 111 opening upwards of water distribution pipeline, after water flows out from the mouth of pipe with certain speed, outside the ascent rate in water that oil droplet process obtains because of self buoyancy (caused by profit relative density difference), also by the promotion of vertical speed on current direction, oil droplet will arrive oil reservoir sooner, required separate and subside time shorten.

2) sedimentation oil removing pot in the utility model adopt upper water distribution, under the mode of catchmenting.Initial because of collision coalescence, diameter becomes large floating oil droplet and is carried secretly by current between the oil droplet that flows downward, and there is convection current collision coalescence process all the time, this process is to short grained coalescent very favourable.The efficiency of convection current collision coalescence depends on the number of oil droplet in unit volume, and in unit volume, the number of oil droplet is more, then collision coalescence chance is more, and efficiency is higher.

3) the catchment water inlet of pipeline and the delivery port of water distribution pipeline all adopts radiant type horn mouth, the uniformity of can ensure water distribution, catchmenting, and has the advantage that structure is simple, easy for installation, not easily block, operate steadily.The water flowed out from water distribution pipeline is assigned to the horizontal cross-section in tank body uniformly, and evenly collects outflow tank body.Because water distribution pipeline has been arranged to the mode of distributing main, water distribution primary branch and Duo Gen water distribution branched pipe, the water flowed out is successively decreased by certain velocity gradient, reduce the perturbation entering water in tank body, can not flow-disturbing be produced and affect oily ascent rate, more utilizing the coalescent of oil droplet.

The utility model also discloses a kind of produced water treatment system, it comprises oil removing pot and chemistry adjustment cyclone reaction separator, oil removing pot adopts the sedimentation oil removing pot shown in Fig. 1, and the first outlet pipe 106 of sedimentation oil removing pot is connected to chemistry adjustment cyclone reaction separator.Chemistry adjustment cyclone reaction separator is the characteristic according to recovered water, filter out the Water purification medicament needing to add, test out Water purification medicament interval of adding and hybrid reaction intensity simultaneously, the vortex field that the turbulent flow that recycling chemistry adjusts cyclone reaction separator diminishes step by step, technique provides power for Water purification medicament with mixing of recovered water, after reaction, product flco is separated with water by the mode of coagulant precipitation by water outlet, realizes water purification.

Chemistry adjustment cyclone reaction separator of the present utility model can adopt following two kinds of modes to realize, and one is combination type device, for mainly for the cyclone reaction knockout drum under conventional condition of water quality; The second is two part arrangement, mainly for complicated water-based, is made up of Cyclonic reactor and slagging-off knockout drum two parts.

Chemistry adjustment cyclone reaction separator adopts the cyclone reaction knockout drum shown in Fig. 3, the cyclone reaction central tube that cyclone reaction knockout drum comprises tank body 201 and is longitudinally placed in tank body 201, the upper end closed of cyclone reaction central tube also offers oil gas vent 214, the intracavity inter-connection of lower end and tank body 201, cyclone reaction central tube is divided into first order cyclone reaction section 202, second level cyclone reaction section 203 and third level cyclone reaction section 204 from top to bottom successively.Tank body 201 is fixedly connected with the second water inlet pipe 205 extend in first order cyclone reaction section 202, extend into the second water purification agent pipe 207 in second level cyclone reaction section 203 and extend on flocculant pipe 208, second water inlet pipe 205 in third level cyclone reaction section 204 and be communicated with the first water purification agent pipe 206.Top in tank body 201 is fixedly installed collector pipe 209 and is positioned at the oil collecting pipe 210 of top of collector pipe, collector pipe 209 offers water inlet (not shown), collector pipe 209 is connected with the second outlet pipe 211 stretched out outside tank body 201; Oil collecting pipe 210 offers oil-in (not shown), oil collecting pipe 210 is connected with the flowline 212 stretched out outside tank body 201.The bottom of tank body 201 is connected with discharge pipeline 213.The connection of sedimentation oil removing pot, the water after the process of sedimentation oil removing pot enters cyclone reaction knockout drum through the first outlet pipe 106 and the second water inlet pipe 205 and carries out chemical treatment.

Continue composition graphs 3, for the ease of catchmenting and oil-collecting, collector pipe 209 and oil collecting pipe 210 are annular, and collector pipe 209 and the equal fixed cover of oil collecting pipe 210 are outside the top of cyclone reaction central tube, water inlet is that it is multiple to be distributed on collector pipe 209, and oil-in is that it is multiple to be distributed on oil collecting pipe 210.In order to make the gas produced in sewage can discharge outside tank body 201, be provided with exhaust outlet 215 on the top of tank body 201.

In addition, the axis direction of the second water inlet pipe 205 and the inwall of cyclone reaction central tube tangent.Adopt the mode of tangential water inlet, current are formed in cyclone reaction central tube and rotates fluidised form, keep certain water velocity, to form velocity gradient field, improve flco coalescence effect further.

The water come by sedimentation oil removing pot enters in first order cyclone reaction section 202 by the second water inlet pipe 205, water added the first Water purification medicament by the first water purification agent pipe 206 before entering first order cyclone reaction section 202, reacted in first order cyclone reaction section 202; Separable fuel-displaced and gas in first order cyclone reaction section 202, isolated oil and gas can be discharged in tank body 201 from oil gas vent 214 and discharge tank body 201 from exhaust outlet 215.Then enter in second level cyclone reaction section 203, in second level cyclone reaction section 203, add the second Water purification medicament by the second water purification agent pipe 207, flocculation reaction again; Last water enters in third level cyclone reaction section 204, adds organic polymer coargulator by flocculant pipe 208 in third level cyclone reaction section 204 simultaneously, and net is flutterred and adsorbed and forms little flco; Beginning to take shape loose flco enters in tank body 1 through the bottom of cyclone reaction central tube, due to upper reaches and the gravity compressed of current, in first order cyclone reaction section 202, second level cyclone reaction section 203 with form Sludge Bed 216 between third level cyclone reaction section 204 and tank body 201, continuation is filtered, net is flutterred and adsorbs little flco, compress the Interstitial Water between mud simultaneously, form closely knit mud and be deposited to the bottom of tank body 2011.Sewage is by after Sludge Bed, and take full advantage of the rest potential of Water purification medicament, the negative potential of little oil droplet is reduced, and coalescence becomes large oil droplet to float, and enters in the oil collecting pipe 210 at tank body 201 top, then discharges from flowline 212; Water after purification enters collector pipe 209 and discharges from the second outlet pipe 211; By regularly opening the valve on the discharge pipeline 213 bottom tank body 201, mud can be discharged.

Cyclone reaction knockout drum reasonable and compact in structure in the utility model, can purify waste water fast and effectively, remove mud and collect oil droplet, thus greatly improves operating efficiency and the work quality of process oil-polluted water.

The second two part arrangement of the chemistry adjustment cyclone reaction separator in produced water treatment system of the present utility model comprises Cyclonic reactor and slagging-off knockout drum; As shown in Figure 4, Cyclonic reactor comprises tank body 301, arranges dividing plate 307 in tank body 301, tank body 301 is divided into the first order reaction chamber 302 that is positioned at bottom and superposed second level reaction chamber 303 by dividing plate 307; The tank body 301 of corresponding first order reaction chamber 303 offers water inlet, is provided with the 3rd water inlet pipe the 304, three water inlet pipe 304 stretched in first order reaction chamber 303 in water inlet and is connected with the first outlet pipe 106 of sedimentation oil removing pot.The tank body 301 of corresponding second level reaction chamber 303 offers Water purification medicament and adds mouth and delivery port, Water purification medicament adds in mouth the adding of agent pipe 305 being provided with and stretching in second level reaction chamber 303, the 3rd outlet pipe 306 stretched in second level reaction chamber 303 is provided with in delivery port, adding of agent pipe 305 is positioned at the bottom of second level reaction chamber 303 and is close to dividing plate 307, and the 3rd outlet pipe 306 is positioned at the top of second level reaction chamber 303.Dividing plate 307 offers through hole, arranges tube connector 308 in through hole, tube connector 308 is communicated with adding of agent pipe 305.

Dividing plate 307 can enter to arrange through hole, and do not arrange tube connector 308, the water in first order reaction chamber 302 directly enters second level reaction chamber 303.Arrange tube connector 308 can enable fully to be reacted by the water of first order reaction chamber 302 and the Water purification medicament that adding of agent pipe 305 adds.

The 3rd water inlet pipe 304 in the present embodiment, the 3rd outlet pipe 306 and adding of agent pipe 305 are all horizontally disposed with, and tube connector 308 is vertically arranged.

As shown in Figure 4, entered the first order reaction chamber 302 of Cyclonic reactor bottom by the 3rd water inlet pipe 304 after adding the first Water purification medicament from the water of the first outlet pipe 106 of sedimentation oil removing pot, Water purification medicament fully mixes with sewage, after reaction, second level reaction chamber 303 is entered through the through hole on dividing plate 307, connect with adding of agent pipe 305 when entering second level reaction chamber 303, the second Water purification medicament is mixed in sewage, the second Water purification medicament and the first Water purification medicament are reacted rear water and are fully mixed in second level reaction chamber 303, reaction, flco is grown up further, settling of floccus is to the bottom of tank body 301, last a small amount of oil slick and logical 3rd outlet pipe 306 of water enter the knockout drum that removes the gred and are further processed.The top of Cyclonic reactor is provided with emergency vent 310, and bottom is provided with blowdown drain 309.

Slagging-off knockout drum in produced water treatment system of the present utility model can adopt spraying slagging-off knockout drum, also can adopt negative pressure deslagging knockout drum.

As shown in Figure 5, spraying slagging-off knockout drum comprises tank body 401, Swirl cylinder 402, spraying deslagging device, oil-collecting device, mud discharging device and water collector.The upper end of Swirl cylinder 402 is uncovered, lower end is fixed on the bottom of tank body 401 and seals, ring cavity is formed between Swirl cylinder 402 and tank body 401, the bottom of Swirl cylinder 402 has the connected entrance 403 of the intracavity inter-connection of at least one and tank body 401, the middle part of Swirl cylinder 402 is connected with the 4th water inlet pipe 404, one end of 4th water inlet pipe 404 is positioned at Swirl cylinder 402, and the other end is connected with the 3rd outlet pipe 306 of Cyclonic reactor.Spraying deslagging device is arranged at the upper outside of Swirl cylinder 402.Oil-collecting device is arranged on the inwall of tank body 401 corresponding to Swirl cylinder 402 upper end.Mud discharging device is arranged at the position of the corresponding connected entrance 403 in bottom of tank body 401.Water collector comprises the plug-in water tank 405 of the outer upper being installed on tank body 401 and receives water pipe, and the lower end of receiving water pipe is positioned at tank body 401 and is communicated with tank body 401, and the upper end of receiving water pipe is connected with plug-in water tank 405; The bottom of plug-in water tank 405 is fixedly connected with the 4th outlet pipe 406.

The scum silica frost that can continuously and effectively be gathered by tank body 401 inner top by spraying deslagging device and oil-collecting device is separated with the water after process and discharges outside tank body 401.And spraying deslagging device can spray water smoke, effectively scum, the scum silica frost avoiding tank body 401 top to gather flows out through the 4th outlet pipe 406, reduces the impact of scum silica frost on effluent quality and back segment flow process.

The inwall continuing the axis direction of composition graphs the 5, four water inlet pipe 404 and Swirl cylinder 402 is tangent, and the outlet of the 4th water inlet pipe 404 is positioned on the inwall of Swirl cylinder 402.The axial direction of the 4th water inlet pipe 404 and the inwall of Swirl cylinder 402 tangent, pending water can be made tangentially to enter in Swirl cylinder 402, produce high-speed eddy, accelerate mixing for the treatment of sewage and Water purification medicament.

Continue see Fig. 5, receive water pipe and comprise and receive water ring pipe 407 and L shape skirt 408, receiving water ring pipe 407, to be placed on the middle part of Swirl cylinder outer and fixed by the outer wall of gusset and tank body 401, and receipts water ring pipe 407 side down is evenly provided with multiple receipts water inlet 409.One end of L shape skirt 408 is communicated with receipts water ring pipe 407, and the other end passes tank body 401 and stretches in plug-in water tank 405.One end (hereinafter by this end called after upper end) that L shape skirt 408 is positioned at described plug-in water tank 405 is provided with filter.Water after purification is first flowed into by receipts water inlet 409 and receives water ring pipe 407, then flows into L shape skirt 408 from receipts water ring pipe 407, ensure that tank body 401 pinch purification after water evenly flow out.

As shown in Figure 5, water-level regulator is provided with in plug-in water tank 405, water-level regulator comprises urceolus 410, regulates inner core (not shown), screw mandrel 412, installing rack 413, handwheel 414 and handwheel seat 415, urceolus 410 is fixed on the bottom in plug-in water tank 405, the upper end of L shape skirt 408 is positioned at urceolus 410, and the 4th outlet pipe 406 is positioned at the outside of urceolus 410; Regulate inner core to be set in urceolus 410 also can move up and down, in the process regulating inner core movement, the outer wall of inner core and the inwall of urceolus 410 is regulated to keep sealing, regulate on inner core and be fixed with screw mandrel 412, installing rack 413 to be arranged in plug-in water tank 405 and to be positioned at the top of urceolus 410, and the lower end of handwheel seat 415 is fixedly installed on installing rack 413, and handwheel 414 is installed in the upper end of handwheel seat 415, be provided with nut in the middle part of handwheel 414, the upper end of screw mandrel 412 is through nut.

Water-level regulator can regulate the height of water level in plug-in water tank 405, according to the demand that reality changes water quality and the water yield in production process, rotating handwheel 414 drives screw mandrel 412 to move up and down, screw mandrel 412 drives and regulates inner core to slide up and down in urceolus 410, to regulate the freeboard of plug-in water tank 405.When the oil extraction deslagging in tank body 401 needs high liquid level, the height regulating inner core can be improved, the water level of plug-in water tank 405 is improved; When needing low liquid level draining in tank body 401, the height regulating inner core can be reduced, be beneficial to the discharge of water in tank body 401.By water-level regulator, the oil slick in tank body 401 is all discharged by oil-collecting device, accumulation can not be stopped in tank body 401, thus improve effluent quality further.

Oil-collecting device in the present embodiment is the collection tank 424 of the annular formed around the inwall of tank body 401, and the cross section of collection tank 424 is the U-shaped of opening upwards, collection tank 424 is connected with the collection tube 416 stretched out outside tank body 401.

Continue composition graphs 5, spraying deslagging device comprises slag receiving trough 417, slag gathering hopper 418, receives slag pipe 419 and wash tub pipe 420; Slag receiving trough 417 only upper end is uncovered, bottom surface offers the hole for making the upper end of Swirl cylinder 402 pass, seal between Swirl cylinder 402 and hole wall, the upper end of Swirl cylinder 402 is positioned at slag receiving trough 417, the bottom surface of slag receiving trough 417 is the inclined-plane that higher end is low, and the left end namely in Fig. 5 is low, right-hand member is high; Slag gathering hopper 418 is arranged at the outside of the bottom (i.e. left end) of slag receiving trough 417; Receive slag pipe 419 to be connected on slag gathering hopper 418 and to stretch out outside tank body 401, and slag receiving trough 417, slag gathering hopper 418 are all connected with receipts slag pipe 419.The top of Swirl cylinder 402 is fixed in the upper end of wash tub pipe 420, and wash tub pipe 420 is connected with spraying nozzle, and it is outer and be connected with running water that the lower end of wash tub pipe 420 passes tank body 401.

Continue composition graphs 5, the spraying nozzle in the present embodiment comprises upper strata spraying nozzle 421 and lower floor's spraying nozzle 422.Upper strata spraying nozzle 421 is at least two, and evenly installs outside the upper end of washing-round water pipe 420, and the wash tub pipe 420 of the below between adjacent two upper strata spraying nozzles 421 arranges lower floor's spraying nozzle 422.Upper strata spraying nozzle 421 and lower floor's spraying nozzle 422 are two-layer up and down and dislocation is arranged, makes developing result better.When actual production runs, when the scum silica frost thickness on center whirl cylinder 402 top is less, density is lighter, can only utilize lower floor's spraying nozzle 422; When scum silica frost thickness is thicker, then upper strata spraying nozzle 421 and lower floor's spraying nozzle 422 can use simultaneously.

As shown in Figure 5, mud discharging device can adopt Chinese patent Authorization Notice No. to be a kind of sludge removing device for oil tank of CN2516279Y.Its structure and principle do not repeat them here.In addition, overflow pipe 423 is fixed with near tank body 401 inside of slag receiving trough 417 outer upper end position, the upper port of overflow pipe 423 and the intracavity inter-connection of tank body 401, the middle part of overflow pipe 423 extends outside tank body 401 through tank body 401, the lower end of overflow pipe 423 is connected on the blowdown line of Sewage Disposal, when the water yield of coming of the 4th water inlet pipe 404 increases suddenly, when exceeding the processing load of spraying slagging-off knockout drum in the short time, unnecessary water flows out tank body 401 from overflow pipe 423, prevent untreated water from directly entering plug-in water tank 405, cause effluent quality to be deteriorated.

Below in conjunction with Fig. 5, the course of work of spraying slagging-off knockout drum is introduced: first, the 4th water inlet pipe 404 is entered through the 3rd outlet pipe 306 by the recovered water after Cyclonic reactor process, then the middle part in Swirl cylinder 402 is entered, current flow downward at Swirl cylinder 402 internal rotating, recovered water and Water purification medicament fully mix rear reaction and form the dregs of fat, the dregs of fat are separated gradually with the current after process and move up in Swirl cylinder 402, and the dregs of fat rising to Swirl cylinder 402 top form scum layer; Recovered water and Water purification medicament are reacted the oil slick generated and are entered collection tank 424, and are discharged outside tank body 401 by collection tube 416.Impurity such as the silt of recovered water, and recovered water and Water purification medicament react the sludgd deposition that the generates bottom to tank body 401, are collected by negative pressure mud exhauster and to discharge tank body 401 through discharge pipeline 425 outside.Pressure water from wash tub pipe 420 is sprayed by spraying nozzle, the scum silica frost being gathered in Swirl cylinder 402 top is purged in slag receiving trough 417, scum silica frost in slag receiving trough 417 slides onto in slag gathering hopper 418 along the bottom bevel of slag receiving trough 417 gradually, discharges outside tank body 401 by receiving slag pipe 419.Finally, the water after process is flowed in tank body 401 by connected entrance 403, and enters adjustment inner core through receipts water ring pipe 407 and L-type skirt 408, enters plug-in water tank 405 by the water regulating inner core upper end to flow out, and enters subsequent processing device through the 4th outlet pipe 406 discharge.

As shown in Figure 6, slagging-off knockout drum is negative pressure deslagging knockout drum, negative pressure deslagging knockout drum comprises tank body 501 and is positioned at the cylindrical shell 502 of tank body 501, the upper end of cylindrical shell 502 is uncovered, lower end and tank body 501 are fixed and seal, form ring cavity 517 between tank body 501 and cylindrical shell 502, the bottom of cylindrical shell 502 has the outlet 503 of the intracavity inter-connection of at least one and tank body 501; Top in cylindrical shell 502 is installed with receives slag funnel 504, and the bottom of receiving slag funnel 504 is connected with the scum pipe 505 stretched out outside tank body 501; The middle part of cylindrical shell 502 is connected with the 5th water inlet pipe the 506, five water inlet pipe 506 and stretches in cylindrical shell 502 along the tangential direction of cylindrical shell 502; The upper inside wall of tank body 501 is formed the collection tank 508 of annular, the cross section of collection tank 508 is U-shaped, and opening up, collection tank 508 is connected with the collection tube 509 stretched out outside tank body 501; The middle part of ring cavity 517 is fixed with the packing layer 507 of annular, arranges the receipts water pipe 510 of annular in the ring cavity 517 above packing layer 507, receives on water pipe 510 and is connected with the 5th outlet pipe 511 stretched out outside tank body 501.

Continue composition graphs 6, the bottom of tank body 501 is fixed with the first annular dredging tube 512 being positioned at ring cavity 517, and in the present embodiment, the first dredging tube 512 is two that arrange up and down.The second annular sludge-suction pipe 513 is fixed with above packing layer 507.The bottom surface of the first annular dredging tube 512 and the second annular sludge-suction pipe 513 is distributed with mud-suction hole.First annular dredging tube 512 and the second annular sludge-suction pipe 513 are communicated with the discharge pipeline 514 stretched out outside tank body 501 respectively.Two the first annular dredging tubes 512 can be communicated with a rear shared discharge pipeline 514, also can respectively with a discharge pipeline 514.First annular dredging tube 512 is identical with the second annular sludge-suction pipe 513 structure and be equipment public in prior art, does not repeat them here.

In addition, as shown in Figure 6, overfall is provided with in tank body 501 above the receipts water pipe 510 of annular, overfall is fixedly connected with overflow pipe 515, when in negative pressure deslagging knockout drum, inflow is excessive, by outside overflow pipe 515 drain tank, can prevent raw water from directly entering and receive water pipe 510, affect effluent quality.And the middle part inwall of tank body 501 is fixed with annular baffle ring 516, and packing layer 507 is on annular baffle ring 516, and annular baffle ring 516 plays the effect supporting fixing and spacing packing layer 507.Packing layer 507 is installed with U-shaped ventilation balance pipe 217, U-shaped ventilation balance pipe 217 makes its part be positioned at the top of packing layer 507 through packing layer 507, and a part is positioned at the bottom of packing layer 507.U-shaped ventilation balance pipe 217 for balance packing layer 507 upper and lower ring cavity 517 between pressure, prevent from building the pressure.

Packing layer 507 can adopt Propylene polymerization inclined plate packing layer, Propylene polymerization swash plate has excellent chemical property, stability is good, proportion is little, smooth surface and slip effective, avoid the broken leakage of filler.

Below in conjunction with Fig. 6, the course of work of negative pressure deslagging knockout drum is introduced: enter the 5th water inlet pipe 506 by the recovered water after Cyclonic reactor process through the 3rd outlet pipe 306, and tangentially enter in cylindrical shell 502 by the 5th water inlet pipe 506, recovered water is fully reacted by hydraulic cyclone and Water purification medicament in cylindrical shell 502, the flco that reaction is generated floats up to the water surface by the solution gas discharged in sewage and is condensed into scum silica frost, the current of bottom enter ring cavity 517 from the outlet 503 of cylindrical shell 502, then after the clear water of sedimentation separation passes packing layer 507 from bottom to top, flco in further interception water, water is purified further after packing layer 507, clear water after purification above packing layer 507 enters receives water pipe 510, discharge outside tank body 501 finally by the 5th outlet pipe 511.The scum silica frost floated is introduced into be received in slag funnel 504, is then discharged outside tank body 501 by scum pipe 505.Oil slick is discharged outside tank body 501 by collection tube 509 after being collected by collection tank 508.Regularly discharge outside tank body 501 respectively by the first annular dredging tube 512 and the second annular sludge-suction pipe 513 with the mud of packing layer 507 overburden bottom tank body 501.

The utility model also discloses a kind of method for treating water cut out, comprises the steps:

1) sedimentation oil removing: adopt the sedimentation oil removing pot shown in Fig. 1 to utilize the difference of extraction oil-in-water, water and aerosol density, most oil floats, suspension sinks and by natural separation, remaining small part oil and suspension carry out next program;

2) cyclone reaction oil removing: through step 1) recovered water after process enters foregoing chemistry adjustment cyclone reaction separator, and add 2-3 kind Water purification medicament and carry out chemical cyclone reaction, oil in recovered water and suspension are effectively caught by Water purification medicament grows up with coalescence, mud sinks, scum silica frost floats, and be effectively separated, realize the purification of effluent quality.

Method for treating water cut out of the present utility model utilizes two stages for the treatment of facility, the first order is the Physical process utilizing sedimentation oil removing pot, the second level is the chemical Treatment utilizing cyclone reaction chemistry adjustment cyclone reaction separator, to make up the deficiency of simple physical method process, purification of water quality and water stabilization can be taken into account, the environmental requirement of reuse increasingly stringent up to standard after meeting produced water treatment.

Concrete, first thickened oil recovery high-temperature produced water enter vertical vertical-flow sedimentation oil removing pot, and sedimentation oil removing pot arranges and collects water distribution system uniformly, and adopt upper water distribution, under the mode of catchmenting, water distribution and all employing radiant type horn mouths that catchments, the uniformity ensureing water distribution and catchment.After under perpendicular stream mode, recovered water upwards flows out with certain speed from sparge pipe, oil is except the ascent rate in water obtained because of the floating of self, also by the promotion of vertical speed on current direction, oil will arrive oil reservoir, required separate and subside time shorten sooner.And oil collision coalescence and form floating oil droplet and directly become large in the process risen, and in the process floated and to be carried secretly the process that there is convection current collision coalescence between the oil droplet that flows downward all the time by current, make oil be agglomerated into large oil droplet and be more conducive to float, shorten floating interval of floating dock, improve oil removal efficiency, the oil floating up to recovered water upper surface enters in the collection tank of the cell wall of sedimentation oil removing pot, then discharges sedimentation oil removing pot.Sludge settling in recovered water is discharged to the bottom of sedimentation oil removing pot through negative pressure mud exhauster.

Recovered water after the process of sedimentation oil removing pot enters chemistry adjustment cyclone reaction separator, according to the characteristic of recovered water, filter out the Water purification medicament needing to add, test out interval of adding and hybrid reaction intensity simultaneously, the vortex field that the turbulent flow that recycling chemistry adjusts cyclone reaction separator diminishes step by step, technique provides power for Water purification medicament with mixing of recovered water, by the mode of coagulant precipitation, product flco is separated with water after reaction, realizes water purification.The a small amount of oil simultaneously contained in recovered water floats and is collected.

What chemistry adjustment cyclone reaction separator can adopt combination type (only has a device, namely the cyclone reaction knockout drum shown in Fig. 3), also can adopt split type (comprise two devices, the Cyclonic reactor namely shown in Fig. 4 and the spraying shown in Fig. 5 remove the gred the combination of the negative pressure deslagging knockout drum shown in knockout drum or Fig. 6).For containing polymer, super-viscous oil, SAGD recovered water oil bead diameter are little, viscosity large, profit is not easily separated; Gassiness recovered water due to solution gas in water higher and unstable, above reason easily causes flocs float, and scum layer makes scum layer thickness increase in tank top long-term aggregated, scum silica frost flows out through delivery port and enters next section of flow process, cause tank water outlet oil-containing, suspension content exceeds standard, and bring the situation of processing pressure for back segment flow process, adopt the spraying slagging-off knockout drum shown in Fig. 5.Establish slag receiving trough at tank deck, hydraulic spray nozzle is established at slag receiving trough center.By spraying, scum silica frost is purged in slag receiving trough, and then outside drain tank, sludge settling to the bottom of spraying slagging-off knockout drum, and outside negative pressure mud discharging device drain tank.Negative pressure deslagging knockout drum shown in Fig. 6 is then collect by suction function the scum silica frost floating up to jar liquid surface, and outside drain tank, sludge settling to the bottom of negative pressure deslagging knockout drum, and outside negative pressure mud discharging device drain tank, guarantees effluent quality.

Recovered water is after two stages for the treatment of of the present utility model, and within water outlet oil-containing and suspension can reach 15mg/L, rear end is aided with filtration can meet reuse requirement.Solve the problem that high temperature low profit density contrast high emulsifiability recovered water oil bead diameter is little, profit stability strong, conventional process flow difficulty is large, enable the recovered water process up to standard that produces in heavy oil development and be back to boiler, avoid the outer pollution discharging environment of recovered water (sewage) produced in heavy oil development, saved clear water simultaneously and produced huge economic benefit.

Representative embodiment of the present utility model obtains detailed description.These detailed descriptions are not used in and limit scope of the present utility model.Those skilled in the art can in essence of the present utility model and protection domain, and make various amendment or equivalent replacement to the utility model, this amendment or equivalent replacement also should be considered as dropping in protection domain of the present utility model.Therefore, the feature in aforementioned detailed description in conjunction with dispensable for implementing the utility model in the broadest scope, and alternatively only instruction is provided to the representative embodiment of special detailed description of the present utility model.In addition, in order to obtain of the present utility model being attached with by embodiment, the various different feature providing instruction in the description combines by various ways, but these modes are not exemplified out especially.

Claims

1. sedimentation oil removing pot, comprises tank body, it is characterized in that, is provided with the center tubing string of hollow, distributing water room, oil trap and mud discharging device in described tank body;

Described oil trap forms annular around the inwall of described tank body;

2. sedimentation oil removing pot according to claim 1, it is characterized in that, each described water distribution pipeline comprises perpendicular to a distributing main of described center tubing string, many water distribution branched pipes being vertically connected at a water distribution primary branch on described distributing main and being connected on described water distribution primary branch, and water distribution branched pipe described in every root has described delivery port respectively.

3. sedimentation oil removing pot according to claim 2, is characterized in that, described delivery port is horn-like and opening upwards.

4. sedimentation oil removing pot according to claim 2, is characterized in that, described distributing water room is set on the tubing string of described center, and many described distributing mains of multiple described water distribution pipeline are distributed in described distributing water room.

5. sedimentation oil removing pot according to claim 1, it is characterized in that, the pipeline that catchments described in each comprise perpendicular to described center tubing string the main that catchments, be vertically connected at described in catchment primary branch and many of catchmenting on primary branch described in being connected to of of catchmenting on main to catchment branched pipe, the branched pipe that catchments described in every root has described water inlet respectively.

6. sedimentation oil removing pot according to claim 5, is characterized in that, described water inlet is horn-like and Open Side Down.

7. produced water treatment system, comprise oil removing pot and chemistry adjustment cyclone reaction separator, it is characterized in that, the sedimentation oil removing pot of described oil removing pot according to any one of claim 1 to 6, described first outlet pipe is connected to described chemistry adjustment cyclone reaction separator.

8. produced water treatment system according to claim 7, it is characterized in that, described chemistry adjustment cyclone reaction separator is cyclone reaction knockout drum, the cyclone reaction central tube that described cyclone reaction knockout drum comprises tank body and is longitudinally placed in described tank body, the lower end of described cyclone reaction central tube and the intracavity inter-connection of described tank body, described cyclone reaction central tube is divided into first order cyclone reaction section, second level cyclone reaction section and third level cyclone reaction section from top to bottom successively;

The bottom of described tank body is connected with discharge pipeline;

9. produced water treatment system according to claim 8, it is characterized in that, described collector pipe and oil collecting pipe are annular, described collector pipe and oil collecting pipe are all enclosed within outside described cyclone reaction central tube, described water inlet is that it is multiple to be distributed on described collector pipe, and described oil-in is that it is multiple to be distributed on described oil collecting pipe.

10. produced water treatment system according to claim 8, is characterized in that, the axis direction of described second water inlet pipe and the inwall of described cyclone reaction central tube tangent.

11. produced water treatment systems according to claim 7, is characterized in that, described chemistry adjustment cyclone reaction separator comprises Cyclonic reactor and slagging-off knockout drum;

The bottom of described tank body is provided with blowdown blow-down pipe;

Described 3rd water inlet pipe is connected with described first outlet pipe.

12. produced water treatment systems according to claim 11, it is characterized in that, described slagging-off knockout drum is spraying slagging-off knockout drum, and described spraying slagging-off knockout drum comprises tank body, Swirl cylinder, spraying deslagging device, oil-collecting device, mud discharging device and water collector;

13. produced water treatment systems according to claim 12, it is characterized in that, water-level regulator is provided with in described plug-in water tank, described water-level regulator comprises urceolus, regulates inner core, screw mandrel, installing rack, handwheel and handwheel seat, described urceolus is fixed on the bottom in plug-in water tank, described L shape skirt is positioned at described urceolus, and described 4th outlet pipe is positioned at the outside of described urceolus; Described adjustment inner core is set in described urceolus and also can moves up and down, and the outer wall of described adjustment inner core and the inwall of described urceolus keep sealing, described adjustment inner core is fixed with described screw mandrel, described installing rack is positioned at the top of described urceolus, the lower end of described handwheel seat is installed on described installing rack, described handwheel is installed in the upper end of described handwheel seat, is provided with the nut that described screw mandrel can be made to pass in the middle part of described handwheel.

14. produced water treatment systems according to claim 12, is characterized in that, the axis direction of described 4th water inlet pipe and the inwall of described Swirl cylinder tangent, and the outlet of described 4th water inlet pipe is positioned on the inwall of described Swirl cylinder; Described oil-collecting device is the cannelure formed around the inwall of described tank body, described cannelure is connected with the collection tube stretched out outside described tank body.

15. produced water treatment systems according to claim 12, is characterized in that, described spraying deslagging device comprises slag receiving trough, slag gathering hopper, receipts slag pipe and wash tub pipe;

16. produced water treatment systems according to claim 11, it is characterized in that, described slagging-off knockout drum is negative pressure deslagging knockout drum, described negative pressure deslagging knockout drum comprises tank body and is arranged at the cylindrical shell in described tank body, the upper end of described cylindrical shell is uncovered, lower end and described tank body are fixed and seal, and form ring cavity between described cylindrical shell and described tank body, and the bottom of described cylindrical shell has the outlet of the intracavity inter-connection of at least one and described tank body; Top in described cylindrical shell is installed with receives slag funnel, and the bottom of described receipts slag funnel is connected with the scum pipe stretched out outside tank body; The middle part of described cylindrical shell is connected with the 5th water inlet pipe; The upper inside wall of described tank body is formed the collection tank of annular, described collection tank is connected with the collection tube stretched out outside described tank body; The middle part of described ring cavity is fixed with the packing layer of annular; The receipts water pipe of annular is set in the ring cavity above described packing layer, described receipts water pipe is connected with the 5th outlet pipe stretched out outside described tank body; Described tank base is fixed with the first annular dredging tube being positioned at described ring cavity, is fixed with the second annular sludge-suction pipe above described packing layer.