CN207986832U - Fracturing outlet liquid processing system - Google Patents
Fracturing outlet liquid processing system Download PDFInfo
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- CN207986832U CN207986832U CN201820241883.9U CN201820241883U CN207986832U CN 207986832 U CN207986832 U CN 207986832U CN 201820241883 U CN201820241883 U CN 201820241883U CN 207986832 U CN207986832 U CN 207986832U
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Abstract
The utility model belongs to technical field of sewage, is related to a kind of fracturing outlet liquid processing system.The ozone generated with ozone generating-device by the fracturing outlet liquid of elevator pump conveying is mixed to form gas and liquid mixture by ozone jet stream throwing device, and is delivered in catalytic reactor, and reaction rate greatly improved in carry out catalytic oxidation with pressure.The first treatment fluid dealt through catalytic reactor enters the first air flotation tank, and the flotation to dross is carried out under the synergistic effect of eddy flow state using the gas of residual in water.The second processing liquid dealt through the first air flotation tank enters the further removing dross of eddy flow dissolved air flotation device.The third treatment fluid dealt through eddy flow dissolved air flotation device enters filter filtering, if reuse can be directly realized by with use by meeting back.The fracturing outlet liquid processing system integrates device for catalyzing and oxidating ozone and eddy flow dissolved air flotation device, can rapid break viscosity reduction, oxidation efficiency and ozone utilization rate raising.
Description
Technical field
The utility model belongs to technical field of sewage, is to be related to a kind of fracturing outlet liquid processing system more specifically
System.
Background technology
Fracturing outlet liquid is to increase oil gas well production with hydraulic fracturing technology to the row of returning after stratum progress fracturing work
To the mixed liquor on ground, not only enter the fracturing fluid on stratum including original annotation, but also carry the multiple pollutant in stratum.By
Development for many years, hydraulic fracturing technology have become improve oil gas well capacity and oil recovery important well stimulation it
One.Fracturing fluid has viscosity height, and leak-off is low, and rheological characteristic is good, to realize that fracturing fluid transmits pressure, purifies the purpose in crack.For
The requirement for meeting above-mentioned fracturing fluid property, need be added thickening agent, crosslinking agent, fungicide, clay stabilizer, high-temperature stabilizer,
The multiple additives such as cleanup additive, PH stabilizer, gel breaker, fluid loss additive, returning the drain main component of returning for draining into earth's surface has solid
Organic matter etc. based on suspended matter, crude oil, microorganism, inorganic salts, inorganic acid and polycyclic aromatic hydrocarbon compounds is a kind of complicated more
Phase dispersion has many characteristics, such as the features such as high COD, high stability, high viscosity, toxicity are big, difficult to degrade.
During China oil field carries out conventional pressing crack construction operation, each well fracturing outlet liquid volume is 100-
200m3.In the application of shale gas class horizontal fracturing technique, the fracturing outlet liquid amount that each well generates can reach 3000-6000m3。
If so a large amount of fracturing fluid cannot effectively handle realization reuse, the waste of a large amount of clear water resource is not only caused, and
If arbitrary outer row will certainly cause seriously to pollute to natural environments such as surface drainage, crops, air；A large amount of heavy metal simultaneously
Substance enters the Nature, also results in the ecosystem and water resource environment generates irreversible destruction.
Fracturing outlet liquid processing has following three difficult points：
(1) initial viscosity is larger
Although fracturing fluid can fill gel breaker and carry out brokenly glue viscosity reduction returning to drain into face of ground, since action time is shorter
And broken glue temperature is undesirable causes broken glue effect poor, returning to remain unchanged when draining into ground has very high viscosity, in 10-20mPas.
Viscosity height not only influences the treatment effeciency of equipment, but also has prodigious negative effect to oxidation effectiveness, flocculating effect.
Skid, modularization tended to the treatment process for returning drain at present, mounted well operations, therefore it is how fast
It is also difficult point that it is the key point for the treatment of process that the realizing to returning drain of speed, which breaks glue viscosity reduction,.
(2) COD high and complicated component
If outer row after fracturing outlet liquid processing, COD contents are a most key indexs, therefore reduce COD and contain
Amount also seems particularly significant and crucial in below the mark i.e. deep oxidation problem, due to returning drain complicated component, COD contents compared with
Height, therefore how effectively to reduce the difficult point that COD is treatment process.
(3) salt content is high, is rich in incrustation ion
No matter discharge, re-injection still compounds recycling for salt content in liquid, there is very stringent index, especially right
There is very specific regulation in calcium and magnesium, requires to be also to return drain processing links so whether the desalination effect in later stage can reach standard
An emphasis.
Mainly have to fracturing outlet liquid treatment process in the prior art following two：
(1) great Chi sedimentations+flocculating setting+filtering
The treatment process is most traditional processing mode, is built a station processing using concentration, drain vehicle is returned in neighbouring well site
Transport is realized by prolonged natural degradation in settling tank to treating stations and breaks glue viscosity reduction, follow-up to assist flocculating and purifying device
It is further processed with filter device, treated, and sewage can carry out back with use.
The technique has the disadvantage that：Long processing period, by territory restriction；A large amount of capital construction work is expended, is taken up a large area,
Flexibility is poor；Sludge quantity is big, causes secondary pollution；The toxic substance of outdoor settling tank volatilization is harmful to environment；It cannot achieve
With well operations.
(2) oxidation+flocculating setting+filtering
By prolonged technology exploration, discovery, which will be realized, efficiently handles fracturing outlet liquid, it is necessary to its into
Row re-oxidation further breaks glue viscosity reduction, and the mode of oxidation has three kinds of chemical method, electrochemical process and ozone oxidation at present, through peroxide
Flocculation separation and filtering are carried out after change can greatly improve treated water quality, be more favorable to subsequent advanced treating.
Chemical method：It is aoxidized using strong oxidizers such as hydrogen peroxide to returning drain.Since this method medicament adding amount is big, oxygen
Change efficiency it is low, and belong to harmful influence transport and carrying cost it is higher, this method has been eliminated at present.
Electrochemical process：Drain is returned by inert electrode electrolysis, generates O2、cl2、clo-With the oxidizing substances such as OH to returning
Drain carries out deep oxidation.This method non-secondary pollution, gather materials on the spot generates oxidisability using electrolysis such as chlorions in sewage
Substance, operating cost is low, and oxidation effectiveness is good, while having microbubble air flotation effect, is very promising technology；But due to
It returns in drain and all to contain higher incrustation ion, cause pole plate fouling serious, the problems such as electrolysis effectiveness is unstable, and restricting should
The maximum bottleneck of technology development.
Ozone oxidation：Ozone oxidation is the mode of oxidizing of green high-efficient the most at present, and traditional mode is smelly for that will generate
Oxygen is filled by certain mode in sewage, and since ozone is extremely unstable, degradation can be completed in 30min at normal temperatures, therefore
The oxidation efficiency and utilization rate of aforesaid way ozone are relatively low, and there is no the advantages for maximumlly highlighting ozone.
Utility model content
The purpose of this utility model is to provide a kind of fracturing outlet liquid processing systems, are difficult to effectively with solving the prior art
Handle the technical issues of fracturing outlet liquid realizes recycling.
To achieve the above object, the technical solution adopted in the utility model is：A kind of fracturing outlet liquid processing system is provided,
Including：
Elevator pump for extracting fracturing outlet liquid；
Device for catalyzing and oxidating ozone comprising for the catalyst-adding device of catalyst to be added to fracturing outlet liquid, incites somebody to action
The ozone jet stream that ozone and fracturing outlet liquid from the elevator pump are mixed to form the gas and liquid mixture containing microbubble adds dress
It sets, be connected with the output end of the ozone jet stream throwing device and for carrying out catalytic oxidation for the gas and liquid mixture
And the catalytic reactor of the first treatment fluid and dross is discharged, for making first treatment fluid carry out air supporting point under cyclonic action
From and the first air flotation tank of second processing liquid and dross is discharged；
It is connected with first air flotation tank and for making the second processing liquid carry out dissolved air flotation under cyclonic action
And the eddy flow dissolved air flotation device of third treatment fluid and dross is discharged；And
Filter for being filtered to the third treatment fluid.
Further, the bottom sidewall of the catalytic reactor offers the output end with the ozone jet stream throwing device
The water inlet of connection is vertically arranged with water outlet inner tube in the catalytic reactor, and the upper end of the water outlet inner tube is opening, described
The lower end for being discharged inner tube forms water outlet through the bottom of the catalytic reactor, and the top of the catalytic reactor, which is equipped with, floats
Slag exports.
Further, it is equipped in the catalytic reactor for containing using metal oxide as the catalysis of the catalyst of host agent
Reaction bed, the catalytic bed are honeycomb；
And/or the ultrasonic generator for generating cavitation effect is equipped in the catalytic reactor.
Further, the upper portion side wall of first air flotation tank offers first entrance, vertical in first air flotation tank
It is provided with the first inner cylinder, the upper end of first inner cylinder is opening, and the lower end of first inner cylinder is through first air supporting
First slag-drip opening is formed on the bottom of tank, and the bottom sidewall of first air flotation tank offers the first leakage fluid dram, first inner cylinder
Bottom outer wall be equipped with the first vortex board, the inner wall of the end of first vortex board and first air flotation tank separately, institute
It states and is connected by pipeline between the water outlet of catalytic reactor and the first entrance.
Further, it is equipped with for described first on the pipeline connected between the water outlet and the first entrance
Flocculant adding apparatus of the flocculant to generate flco, the first treatment fluid for making to be mixed with the flocculant is added in treatment fluid
Decompression release is mixed with generating the release device of ultramicro air bubble and the cavitation for making the flco be mixed with the ultramicro air bubble
Device.
Further, the eddy flow dissolved air flotation device includes for making the second processing liquid be carried out under cyclonic action
Simultaneously the second air flotation tank of third treatment fluid and dross is discharged and for generating dissolved air water and being transmitted to second gas in dissolved air flotation
Air dissolving system in buoyant tank.
Further, the upper portion side wall of second air flotation tank offers second entrance, vertical in second air flotation tank
It is provided with the second inner cylinder, the upper end of second inner cylinder is opening, and the lower end of second inner cylinder is through second air supporting
Second slag-drip opening is formed on the bottom of tank, and the bottom sidewall of second air flotation tank offers the second leakage fluid dram, second inner cylinder
Bottom outer wall be equipped with second eddy current plate, the inner wall of the end of the second eddy current plate and second air flotation tank is separately.
Further, the air dissolving system includes for extracting the third treatment fluid and at purified gas and the third
Reason liquid is mixed to form the air dissolved pump of dissolved air water and the stable can for storing the dissolved air water, the stable can and described second
It is connected by pipeline between entrance, and the pipeline is equipped with relief valve and for making the dissolved air water and the second processing liquid
Mixed mixer.
Further, further include for the device for catalyzing and oxidating ozone and the eddy flow dissolved air flotation device to be discharged
There is dross entrance, the outlet of dry mud and outlet of sewer, the dross to enter for the sludge dewatering equipment of dross dehydration, the sludge dewatering equipment
Mouthful connected by pipeline between the device for catalyzing and oxidating ozone, the dross entrance and the eddy flow dissolved air flotation device it
Between connected by pipeline, connected by pipeline between the outlet of sewer and the input terminal of the elevator pump.
The utility model having the technical effect that compared with the existing technology：It is sent out by the fracturing outlet liquid and ozone of elevator pump conveying
The ozone that generating apparatus generates is mixed to form gas and liquid mixture by ozone jet stream throwing device, and is delivered in catalytic reactor,
Carry out catalytic oxidation with pressure, greatly improved reaction rate.The first treatment fluid dealt through catalytic reactor enters
First air flotation tank carries out the flotation to dross using the gas of residual in water under the synergistic effect of eddy flow state, no longer needs to match
Standby air dissolving system.The second processing liquid dealt through the first air flotation tank enters the further removing dross of eddy flow dissolved air flotation device.
The third treatment fluid dealt through eddy flow dissolved air flotation device enters filter filtering, if meeting back can be directly realized by with use
Reuse.The fracturing outlet liquid processing system integrates device for catalyzing and oxidating ozone and eddy flow dissolved air flotation device, can rapid break drop
Viscous, oxidation efficiency and ozone utilization rate improve.Equipment skid, modularization, can be with well operations.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the schematic diagram for the fracturing outlet liquid processing system that the utility model embodiment provides；
Fig. 2 be Fig. 1 fracturing outlet liquid processing system in apply elevator pump, device for catalyzing and oxidating ozone, sludge dewatering
The schematic diagram of machine；
The schematic diagram of the eddy flow dissolved air flotation device, filter applied in the fracturing outlet liquid processing system that Fig. 3 is Fig. 1；
The vertical view for the first air flotation tank applied in the fracturing outlet liquid processing system that Fig. 4 is Fig. 1.
Specific implementation mode
In order to make technical problem to be solved in the utility model, technical solution and advantageous effect be more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on ... shown in the drawings or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, does not indicate or imply the indicated device or element is necessary
With specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
It please refers to Fig.1 to Fig.3, first fracturing outlet liquid processing system provided by the utility model is illustrated.Pressure break is returned
Drain processing system includes elevator pump 100, device for catalyzing and oxidating ozone 200, eddy flow dissolved air flotation device 300 and filter 400.
Elevator pump 100 is for extracting fracturing outlet liquid.Device for catalyzing and oxidating ozone 200 includes for catalyst to be added to fracturing outlet liquid
Catalyst-adding device 10, ozone and fracturing outlet liquid from elevator pump 100 are mixed to form the gas-liquid containing microbubble mix
The ozone jet stream throwing device 20 of liquid is closed, is connected with the output end of ozone jet stream throwing device 20 and for for gas and liquid mixture
It carries out catalytic oxidation and the catalytic reactor 30 of the first treatment fluid and dross is discharged, for making the first treatment fluid in cyclonic action
With lower the first air flotation tank 40 for carrying out dissolved air flotation and second processing liquid and dross is discharged.Eddy flow dissolved air flotation device 300 and
One air flotation tank 40 is connected, for making second processing liquid carry out dissolved air flotation under cyclonic action and third treatment fluid being discharged and floats
Slag.Filter 400 is used to filter third treatment fluid.
The fracturing outlet liquid conveyed by elevator pump 100 is added with the ozone that ozone generating-device 22 generates by ozone jet stream
Device 20 is mixed to form gas and liquid mixture, and is delivered in catalytic reactor 30, and carry out catalytic oxidation with pressure greatly improves
Reaction rate.The first treatment fluid dealt through catalytic reactor 30 enters the first air flotation tank 40, in water using residual
Gas the flotation to dross is carried out under the synergistic effect of eddy flow state, no longer need to be equipped with air dissolving system.Through the first air flotation tank 40
The second processing liquid dealt enters 300 further removing dross of eddy flow dissolved air flotation device.Through eddy flow dissolved air flotation device 300
The third treatment fluid dealt enters the filtering of filter 400, if reuse can be directly realized by with use by meeting back.The pressure break returns row
Liquid treating system integrates device for catalyzing and oxidating ozone 200 (CDOF) and eddy flow dissolved air flotation device 300 (CDFU), can rapid break
Viscosity reduction, oxidation efficiency and ozone utilization rate improve.Equipment skid, modularization, can be with well operations.
The fracturing outlet liquid that discharge is returned from stratum enters receiving tank buffering, the preliminary silt larger except degranulation, by carrying
It rises pump 100 and is delivered to the progress treating technology of device for catalyzing and oxidating ozone 200 and dissolved air flotation.
Ozone production process：Air through oxygen generation system 21 generate high-purity oxygen with pressure (pressure 0.2~0.4Mpa most
It is good), oxygen with pressure enters back into ozone generating-device 22, and high-purity oxygen with pressure acts in high-voltage discharge tube through high voltage electric field
Under, oxygen molecule occurs electrochemical reaction and generates high-concentrated ozone with pressure.By being pressurized to ozone gas, elevator pump is substantially reduced
100 lifts and flow can be greatly reduced energy consumption and improve ozone solubility, further speed up and improve ozone advanced catalytic oxidation
Reaction rate and efficiency.
Ozone jet stream throwing device 20 is ejector, and laggard incident flow device is mixed with the catalyst of addition, and the pressure energy of water turns
It changes kinetic energy into, the ozone gas high speed shear with pressure that high velocity stream will enter from ejector gas access is formed in ejector throat,
Ozone gas group is cut into many micro-bubbles, and enters catalysis reaction after ejector boosting section is rapidly dissolved in sewage
Tank 30.
By using ejector and supercharging ozone so that ejector can add ozone under identical power traffic conditions
Gas increase by 2~6 times, 100 lift of elevator pump reduce by 30% or more, can be greatly reduced energy consumption (add identical ozone, it is more conventional
Ejector is compared with low pressure ozone reduces by 50% or more energy consumption), while in the case where adding identical ozone gas, it can be substantially
Kinetic current flow (only traditional 1/4~1/2) is reduced, reduces 100 flow of elevator pump so that the smaller (volume of retort
1/2~3/4 can be reduced), single unit system is more compact.
Relative to traditional ozonation technology, the mode that gas-liquid mixed mode and operation with pressure are carried out using ejector is carried
The utilization rate and oxidation efficiency of high ozone, wherein the grain size minimum of microbubble are up to 30um hereinafter, operating pressure is in 200kPa-
Between 300kPa.Microbubble is greatly improved with pollutant contact probability, and reaction rate is fast, and ozone utilization rate is high, pollutant removal
Effect is good.
Catalyst is added by catalyst-adding device 10, in catalytic reactor 30, dissolved ozone is in catalyst and high energy
Ultrasonic cavitation multiple action, ozone fast decoupled can promote the quick generation of strong oxidizing property hydroxyl radical free radical (OH), carry out one
(such as colloid breaks glue unstability to series catalyst oxidation reaction, and oil emulsion is demulsified, and for organic matter by fast degradation, bacterium, virus are quick
Kill etc.), dirty water pollutant is by fast degradation, demulsification, separation.The catalyst includes compound alkali (sodium hydroxide and calcium oxide
Mixture), the alkalinity value appropriate for improving sewage, to influencing the ion such as CO of ozone oxidation effect3 2-、HCO3 -It is fine etc. playing
Shielding action, it is above-mentioned two aspect all have fabulous facilitation to ozone oxidation.
By adding effective catalyst, (wherein, catalyst is preferably H2O2, metal ion/oxide, alkali, metallic element can
To be but not limited to Fe (II), Mn (II), Ni (1I), Co (II), Cd (II), Cu (ii), Ag (I), Cr (II), Zn (II) etc.
The preferred Fe of metal ion2+Ion, alkali is including but not limited to NaOH, MgOH, lime stone, NaCO3Deng preferably NaOH, lime stone.It is real
Ozone efficiently catalyzing and oxidizing is showed.
To sum up, 10 times or more up to traditional handicraft of the oxidation effectiveness of the technique.
Catalytic reactor 30 is closed container, whole catalytic oxidation progress with pressure, relative to conventional ozone oxidation system
The carried out synthesis under normal pressure of system, greatly improved reaction rate.
The third treatment fluid dealt through eddy flow dissolved air flotation device 300 enters the filtering of filter 400, and water after filter can root
Advanced treating is carried out again according to actual demand, such as COD and NH3-N drops in MVR deep desaltings, biochemical depth, makes if meeting back and matching
With reuse can be directly realized by.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, is urged
The bottom sidewall for changing retort 30 offers the water inlet 31 being connected to the output end of ozone jet stream throwing device 20, catalysis reaction
Water outlet inner tube 32 is vertically arranged in tank 30, the upper end of water outlet inner tube 32 is opening, is discharged the lower end of inner tube 32 through catalysis
Water outlet 33 is formed on the bottom of retort 30, and the top of catalytic reactor 30 is equipped with dross and exports 34.The bottom of catalytic reactor 30
Portion is equipped with cowling panel 35, and cowling panel 35 is equipped with several vias, is used for rectification gas and liquid mixture.It is anti-that gas and liquid mixture enters catalysis
It answers and carries out catalytic oxidation in tank 30, the first treatment fluid is discharged in water outlet inner tube 32.Sewage is dirty after demulsification after catalysis is reacted
Microbubble floats after quickly capturing in the tank bodies such as oil, the colloid of unstability, suspended matter, dross is formed, from 30 dross of catalytic reactor
34 discharge of outlet.In order to rationally control bed drain purge (usually handle water 0.1%~5% range, best 1%~3%), together
When ensure that super ultrasonic cavitation bar immerses liquid depth and ensures high-energy ultrasonic cavitation effect, be provided with liquid level gauge 36 and dross control
Valve 37, realization accurately control liquid level in retort, it is ensured that cavitation effect is best, and rationally control of sewage disposal amount, to ensure
Ozone reaction is abundant, and dross can exclude in time, reaches best removal effect.
The top of catalytic reactor 30 is equipped with liquid level gauge 36, and dross outlet 34 is connected with scum pipe, and scum pipe is equipped with floating
Slag control valve 37, liquid level gauge 36 are electrically connected with dross control valve 37 to control the break-make switching of dross control valve 37.In liquid level gauge
36 when detecting liquid level to the precalculated position of catalytic reactor 30, and dross control valve 37 is opened, the dross in catalytic reactor 30
It is discharged by scum pipe.
The top of catalytic reactor 30 has exhaust outlet, exhaust outlet to be connected with gas exhausting valve 38, the top of catalytic reactor 30
Portion is equipped with pressure transmitter 39, and pressure transmitter 39 is electrically connected with gas exhausting valve 38 to be cut with the break-make for controlling gas exhausting valve 38
It changes.When pressure transmitter 39 detects 30 internal pressure of catalytic reactor to predetermined value, control gas exhausting valve 38 is opened, and is urged
The exhaust gas changed in retort 30 is discharged by exhaust outlet.Realization accurately controls pressure in catalytic reactor 30, usual pressure control
Within the scope of 0.1~1.0Mpa, most preferably in 0.25~0.5Mpa, under best tank body pressure, ozone comprehensive energy consumption is minimum, catalysis
Reaction is best, and operating cost is minimum.
By the way that liquid level gauge 36, pressure transmitter 39, gas exhausting valve 38, dross control valve is arranged in catalytic reactor 30
37, tank interior pressure and liquid level are carried out automatically controlling realizing, while realizing and exhaust gas and dross is precipitated individually being discharged, is saved
Separate System of Water-jet has been gone, technique is optimized so that apparatus structure is more compact, and the degree of automation higher is more advantageous to small-sized
Change and skid.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, is urged
Change in retort 30 and is equipped with for containing the catalytic bed 51 using metal oxide as the catalyst of host agent, catalytic bed 51
For honeycomb.If honeycomb has the dry passage that the short transverse along catalytic reactor 30 extends, contains and urged in channel
Agent makes fluid maximumlly carry out haptoreaction with catalyst.Metal oxide can include the gold such as Fe, Al, Cu, Ni, Ti
Belong to one or more in element.
The ultrasonic generator 52 for generating cavitation effect is equipped in catalytic reactor 30, make catalyst, ozone and
Sewage carries out catalytic oxidation under the effect of super ultrasonic cavitation.Ozone is improved using the fabulous cavitation effect of ultrasonic wave
Oxidation effectiveness, while ultrasonic wave itself has good oxidability, and the effect of synergistic oxidation can be played with ozone, low energy consumption,
It is efficient.Ultrasonic generator 52 is high-energy ultrasonic cavitation bar, is easy assembly.By the way that high-energy ultrasonic cavitation bar (frequency is arranged
For 14~28KHZ, wherein 18~22KHZ is best), realize efficient Cavitation (conventional ultrasound cavitation apparatus under environment with pressure
Band pressure cavitation effect is substantially weakened, and pressure increases to 0.2Mpa or more and do not work substantially, high-energy ultrasonic cavitation apparatus
Pressure energy maximum can reach 10Mpa or more within the scope of cavitation), it can obtain big while preferable cavitation supercritical catalyst oxidation
Width reduces the energy consumption needed for ultrasonic cavitation (energy consumption reduces by 30% or more).
Device for catalyzing and oxidating ozone 200 is integrated with the oxidation technology of " microbubble, with pressure, catalysis, ultrasonic wave ", greatly
While improving ozone oxidation ability, air-dissolving air-float efficiency, ozone consumption is reduced, shortens the residence time, reduces operating cost.
Oxidation efficiency and ozone utilization rate are 10 times of traditional ozone oxidation or more.Relative to other techniques, medicament adding amount is reduced
30% or more, sludge yield reduces 1 times or more.
Catalytic oxidation is carried out to ozone by multi-catalytics means such as catalyst, high-energy ultrasonic cavitation, Hydrodynamic cavitations,
Catalytic ozonation efficiency is set to greatly improve, compared with traditional technology, in the case where obtaining same effect, ozone consumption traditional technology is should
Smelly 3~4 times of technology, can be greatly reduced energy consumption, operating cost can reduce by 1/3 or more.
Realize the catalytic oxidation (within the scope of 0.1~1.0Mpa, most preferably in 0.25~0.5Mpa) at elevated pressures, it is real
Existing ozone fully dissolves, and greatly improves ozone dissipation degree and specific surface area, ozone gas and pollutant contact surface greatly improved
Product and probability so that ozone is easier, is more efficient, more rapidly and pollutant reaction, is improving ozone utilization rate, reduce operation at
This while, substantially reduces equipment size so that single unit system is more compact, is easy to implement automation, skid, moves, more
It meets customer need well.
For the weak situation of traditional cavitation apparatus cavitation intensity, by catalytic reactor 30 by ozone in super ultrasonic wave
Cavitation and advanced catalytic oxidation double action, carry out catalytic oxidation in advance, then in the first air flotation tank 40, pass through water
After further promoting ozone efficiently catalyzing and oxidizing to react under the collective effects such as power cavitation, eddy flow and nanometer microbubble, pollutant
Rapid catalytic ozonation is simultaneously captured and gradually formed by microbubble dross, realizes pollutant and sewage quick separating.By filling
Divide and first carry out efficiently catalyzing and oxidizing reaction using the residence time in catalytic reactor 30, shortens the residence time, and first
The effects that in air flotation tank 40 by Hydrodynamic cavitation, the release of molten gas, eddy flow, keep the reaction of ozone advanced catalytic oxidation further fully anti-
Ying Hou, pollutant, which is caught rapidly to flutter by nanometer microbubble, catches rear quick separating.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, the
The upper portion side wall of one air flotation tank 40 offers first entrance 41, is vertically arranged with the first inner cylinder 42 in the first air flotation tank 40, and first
The upper end of inner cylinder 42 is opening, and the lower end of the first inner cylinder 42 forms the first slag-drip opening 43 through the bottom of the first air flotation tank 40,
The bottom sidewall of first air flotation tank 40 offers the first leakage fluid dram 44, and the bottom outer wall of the first inner cylinder 42 is equipped with the first vortex board
45, the inner wall of the end of the first vortex board 45 and the first air flotation tank 40 separately, the water outlet 33 and first of catalytic reactor 30
It is connected by pipeline between entrance 41.It enters back into after mixing arrangement is sufficiently mixed to enter through first containing a large amount of nanometers of microbubble sewage
Mouthfuls 41 with tank body is tangent enters inside the first air flotation tank 40, generate eddy flow, eddy flow and PAC flocculations under PAM Coagulation aidings,
Oil emulsion after being further demulsified, colloid, suspended matter etc. quickly form small floc sedimentation and are captured by nanometer microbubble after breaking gel
And gradually form dross, dross in the case where eddy flow generates centrifugation force effect gradually to gathering among tank body, and along the first inner cylinder 42
Outer wall is gradually accumulated into scum layer upwards, and after reaching certain liquid level into the first inner cylinder 42, inner cylinder liquid level gauge 48 outputs signal to
Discharge control valve 49, dross are gradually discharged through the first slag-drip opening 43, treated second processing liquid through the first leakage fluid dram 44 with go out
Water control valve is discharged.
Please refer to Fig. 4, entered inside the first air flotation tank 40 by tangential first entrance 41, it, can to generate eddy flow
This is one or more tangential inlets, but in order to ensure best eddy flow effect, the first air flotation tank 40 be arranged two it is tangential
First entrance 41 increases the probability of oil droplet and bubble hit, improves the removal rate to oil.Two first entrances 41 are staggered 180
It is best to tangent entrance tank interior with the first air flotation tank 40 to spend angle pair.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model,
The pipeline between water outlet 33 and first entrance 41 is connected to be equipped with for flocculant to be added to generate flco to the first treatment fluid
Flocculant adding apparatus 61, for making to be mixed with the first treatment fluid decompression release of flocculant to generate the release of ultramicro air bubble
Device 62 and cavitation mixing arrangement 63 for making flco be mixed with ultramicro air bubble.Release device 62 is for making to be mixed with flocculation
Mixture of gas streams after agent carries out decompression release, generates ultramicro air bubble, while flocculant generates flco, cavitation mixing with pollutant
Device 63 makes flco be mixed with microbubble mixture.Water outlet and addition aluminium polychloride after catalytic reactor 30 reacts
(PAC), for polyacrylamide (PAM) after the decompression release of release device 62, dissolved oxygen and the complete ozone of part unreacted are quick
Be precipitated, and generate a large amount of nanometer microbubbles, under Hydrodynamic cavitation, residual catalyst comprehensive function, unreacted ozone further into
The efficient quick catalysis oxidation reaction of row, realizes ozone high density dispersion (nanometer ozone microbubble), reaction of high order (catalytic reactor
30 and first two-stage reaction in air flotation tank 40), greatly improve ozone utilization rate, reduce operating cost.
The top of first air flotation tank 40 has exhaust outlet, exhaust outlet to be connected with gas exhausting valve 46, the top of the first air flotation tank 40
Portion is equipped with pressure transmitter 47, and pressure transmitter 47 is electrically connected with gas exhausting valve 46 to be cut with the break-make for controlling gas exhausting valve 46
It changes.When pressure transmitter 47 detects 40 internal pressure of the first air flotation tank to predetermined value, control gas exhausting valve 46 is opened, the
Exhaust gas in one air flotation tank 40 is discharged by exhaust outlet.
By the way that liquid level gauge, pressure transmitter 47, gas exhausting valve 46, dross control valve is arranged in the first air flotation tank 40,
Realization carries out automatically controlling tank interior pressure and liquid level, while realizing and exhaust gas and dross is precipitated individually being discharged, and eliminates
Separate System of Water-jet optimizes technique so that apparatus structure is more compact, the degree of automation higher, be more advantageous to miniaturization and
Skid.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, rotation
It includes for making second processing liquid carry out dissolved air flotation under cyclonic action and third treatment fluid being discharged to flow dissolved air flotation device 300
Air dissolving system 80 with the second air flotation tank 70 of dross and for generating dissolved air water and being transmitted in the second air flotation tank 70.Eddy flow
Though dissolved air flotation device 300 is air-floating apparatus but realizes that dross is arranged in bottom.The device is also operation with pressure, and pressure is in 100kPa-
Efficient between 300kPa, low energy consumption, and removal efficiency is up to 85% or more.And traditional air-floating apparatus not only reagent consumption
Amount is big, and only has between 40%-60% to the removal rate of suspended matter.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, the
The upper portion side wall of two air flotation tanks 70 offers second entrance 71, is vertically arranged with the second inner cylinder 72 in the second air flotation tank 70, and second
The upper end of inner cylinder 72 is opening, and the lower end of the second inner cylinder 72 forms the second slag-drip opening 73 through the bottom of the second air flotation tank 70,
The bottom sidewall of second air flotation tank 70 offers the second leakage fluid dram 74, and the bottom outer wall of the second inner cylinder 72 is equipped with second eddy current plate
75, the inner wall of the end of second eddy current plate 75 and the second air flotation tank 70 is separately.In liquid level and second in second air flotation tank 70
Cylinder 72 it is highly consistent, removed oil emulsion and dross are gradually accumulated in liquid level, liquid level higher than the second inner cylinder 72 when oil emulsion
It is discharged into the second inner cylinder 72 through delivery pipeline with dross.Realize that dross is arranged in bottom.Enter the by tangential second entrance 71
Inside two air flotation tanks 70, to generate eddy flow, but this is one or more tangential inlets, but in order to ensure best eddy flow effect,
Two tangential second entrances 71 are set in the second air flotation tank 70, increases the probability of oil droplet and bubble hit, improves to oil
Removal rate.Two second entrances 71 are staggered, and to enter tank interior best to tangent for 180 degree angle pair and the second air flotation tank 70.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, it is molten
Gas system 80 include for extract third treatment fluid and purified gas and third treatment fluid be mixed to form dissolved air water air dissolved pump 81,
And the stable can 82 for storing dissolved air water, it is connected by pipeline between stable can 82 and second entrance 71, and on the pipeline
Mixer 84 equipped with relief valve 83 and for making dissolved air water be mixed with second processing liquid.30% third processing is taken to enter molten gas
Pump 81 realizes the mixing of gas-liquid, and into stable can 82, the operating pressure of stable can 82 is between 400kPa-600kPa, dissolved air water
It is mixed in mixer 84 through stable can 82, the process of air supporting choosing is realized in the second air flotation tank 70.Purified gas can be nitrogen or
Purified factory's wind.
One stage catalyzing oxidation reaction (for main reaction region) is carried out by carrying out ozone in catalytic reactor 30, in the molten gas of eddy flow
The multistage catalytic ozonation reaction of ozone two level (for side reaction area) is carried out in air flotation tank so that ozone fully reacts, and reduces nothing
Ozone-depleting is imitated, operating cost is reduced and reduce rear end ozone tail gas handling load, to reduce device operating cost.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, also
It include the sludge dewatering equipment of the dross dehydration for device for catalyzing and oxidating ozone 200 and eddy flow dissolved air flotation device 300 to be discharged
500, there is sludge dewatering equipment 500 dross entrance 501, dry mud outlet 502 and outlet of sewer 503, dross entrance 501 to be urged with ozone
It is connected by pipeline between change oxidation unit 200, is connected by pipeline between dross entrance 501 and eddy flow dissolved air flotation device 300
It connects, is connected by pipeline between outlet of sewer 503 and the input terminal of elevator pump 100.It is de- that the dross of all generations is collected to sludge
Water dispenser 500 is dehydrated dross, and the dry mud that sludge dewatering equipment 500 generates is transported to storage place, and the sewage of generation returns again
The import for flowing to device for catalyzing and oxidating ozone 200 is again introduced into processing system.Sludge dewatering equipment 500 is folded spiral shell machine, sludge dewatering
Effect is good.
Further, a kind of specific implementation mode as fracturing outlet liquid processing system provided by the utility model, is urged
The change top of retort 30, the top of the first air flotation tank 40, eddy flow dissolved air flotation device 300 offer exhaust outlet respectively, each
Exhaust outlet is communicated in same exhaust pipe.Exhaust outlet one-to-one correspondence is equipped with pressure transmitter, pressure transmitter and gas exhaust inspecting
Valve electrical connection is switched with the break-make for controlling gas exhausting valve.Detect some tank interior pressure to predetermined value in pressure transmitter
When, control gas exhausting valve is opened, and the exhaust gas in the tank body is discharged by exhaust outlet, realizes that pressure accurately controls.
The utility model also provides a kind of fracturing outlet liquid treatment process, and the pressure break of any of the above-described embodiment is used to return row
Liquid treating system comprising following steps：
S10 catalyst) is added to fracturing outlet liquid, is mixed to form containing micro- gas by ozone jet stream throwing device 22 and ozone
The gas and liquid mixture of bubble；
S20 gas and liquid mixture) is sent to catalytic reactor 30, gas and liquid mixture is made to carry out catalytic oxidation, discharge the
One treatment fluid；
S30 the first treatment fluid) is sent to the first air flotation tank 40, the first treatment fluid is made to be carried out to dross under cyclonic action
Flotation, and second processing liquid is discharged；
S40 second processing liquid) is sent to eddy flow dissolved air flotation device 300, second processing liquid is made to be carried out under cyclonic action
Dissolved air flotation removes dross and third treatment fluid is discharged；
S50) third treatment fluid is filtered by filter 400.
The fracturing outlet liquid conveyed by elevator pump 100 is added with the ozone that ozone generating-device 22 generates by ozone jet stream
Device 20 is mixed to form gas and liquid mixture, and is delivered in catalytic reactor 30, and carry out catalytic oxidation with pressure greatly improves
Reaction rate.The first treatment fluid dealt through catalytic reactor 30 enters the first air flotation tank 40, in water using residual
Gas the flotation to dross is carried out under the synergistic effect of eddy flow state, no longer need to be equipped with air dissolving system.Through the first air flotation tank 40
The second processing liquid dealt enters 300 further removing dross of eddy flow dissolved air flotation device.Through eddy flow dissolved air flotation device 300
The third treatment fluid dealt enters the filtering of filter 400, if reuse can be directly realized by with use by meeting back.The pressure break returns row
Liquid treating system integrates device for catalyzing and oxidating ozone 200 (CDOF) and eddy flow dissolved air flotation device 300 (CDFU), can rapid break
Viscosity reduction, oxidation efficiency and ozone utilization rate improve.Equipment skid, modularization, can be with well operations.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle
Within the scope of shield.
Claims (9)
1. fracturing outlet liquid processing system, which is characterized in that including：
Elevator pump for extracting fracturing outlet liquid；
Device for catalyzing and oxidating ozone comprising for fracturing outlet liquid being added the catalyst-adding device of catalyst, by ozone
With the fracturing outlet liquid from the elevator pump be mixed to form the gas and liquid mixture containing microbubble ozone jet stream throwing device, with
The output end of the ozone jet stream throwing device is connected and for carrying out catalytic oxidation side by side for the gas and liquid mixture
Go out the catalytic reactor of the first treatment fluid and dross, for making first treatment fluid carry out dissolved air flotation simultaneously under cyclonic action
The first air flotation tank of second processing liquid and dross is discharged；
It is connected with first air flotation tank and for making the second processing liquid carry out dissolved air flotation side by side under cyclonic action
Go out the eddy flow dissolved air flotation device of third treatment fluid and dross；And
Filter for being filtered to the third treatment fluid.
2. fracturing outlet liquid processing system as described in claim 1, which is characterized in that the bottom sidewall of the catalytic reactor
The water inlet being connected to the output end of the ozone jet stream throwing device is offered, is vertically arranged with out in the catalytic reactor
The upper end of water inner tube, the water outlet inner tube is opening, and the lower end of the water outlet inner tube is through the bottom of the catalytic reactor
Water outlet is formed, the top of the catalytic reactor is exported equipped with dross.
3. fracturing outlet liquid processing system as claimed in claim 2, which is characterized in that be equipped with and be used in the catalytic reactor
It contains using metal oxide as the catalytic bed of the catalyst of host agent, the catalytic bed is honeycomb；
And/or the ultrasonic generator for generating cavitation effect is equipped in the catalytic reactor.
4. fracturing outlet liquid processing system as claimed in claim 2, which is characterized in that the upper portion side wall of first air flotation tank
First entrance is offered, the first inner cylinder is vertically arranged in first air flotation tank, the upper end of first inner cylinder is opening, institute
The lower end for stating the first inner cylinder forms the first slag-drip opening, the bottom of first air flotation tank through the bottom of first air flotation tank
Side wall offers the first leakage fluid dram, and the bottom outer wall of first inner cylinder is equipped with the first vortex board, the end of first vortex board
The inner wall of end and first air flotation tank separately, passes through pipe between the water outlet of the catalytic reactor and the first entrance
Road is connected.
5. fracturing outlet liquid processing system as claimed in claim 4, which is characterized in that connecting the water outlet and described the
Pipeline between one entrance is equipped with is added dress for flocculant to be added to first treatment fluid with the flocculant for generating flco
Set, for making to be mixed with the first treatment fluid decompression release of the flocculant to generate the release device of ultramicro air bubble and be used for
Make the cavitation mixing arrangement that the flco is mixed with the ultramicro air bubble.
6. such as fracturing outlet liquid processing system described in any one of claim 1 to 5, which is characterized in that the molten gas gas of eddy flow
Floating device includes for making the second processing liquid carry out dissolved air flotation under cyclonic action and third treatment fluid and dross being discharged
The second air flotation tank and air dissolving system for generating dissolved air water and being transmitted in second air flotation tank.
7. fracturing outlet liquid processing system as claimed in claim 6, which is characterized in that the upper portion side wall of second air flotation tank
Second entrance is offered, the second inner cylinder is vertically arranged in second air flotation tank, the upper end of second inner cylinder is opening, institute
The lower end for stating the second inner cylinder forms the second slag-drip opening, the bottom of second air flotation tank through the bottom of second air flotation tank
Side wall offers the second leakage fluid dram, and the bottom outer wall of second inner cylinder is equipped with second eddy current plate, the end of the second eddy current plate
The inner wall of end and second air flotation tank is separately.
8. fracturing outlet liquid processing system as claimed in claim 7, which is characterized in that the air dissolving system includes for extracting
The third treatment fluid and purified gas and the third treatment fluid be mixed to form the air dissolved pump of dissolved air water and for storing it is described
The stable can of dissolved air water is connected between the stable can and the second entrance by pipeline, and the pipeline is equipped with release
Valve and mixer for making the dissolved air water be mixed with the second processing liquid.
9. such as fracturing outlet liquid processing system described in any one of claim 1 to 5, which is characterized in that further include for by institute
The sludge dewatering equipment of device for catalyzing and oxidating ozone and the dross dehydration of eddy flow dissolved air flotation device discharge is stated, the sludge is de-
Water dispenser has dross entrance, the outlet of dry mud and outlet of sewer, leads between the dross entrance and the device for catalyzing and oxidating ozone
Piping connect, connected by pipeline between the dross entrance and the eddy flow dissolved air flotation device, the outlet of sewer with
It is connected by pipeline between the input terminal of the elevator pump.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108218042A (en) * | 2018-02-09 | 2018-06-29 | 深圳科力迩科技有限公司 | Fracturing outlet liquid processing system and technique |
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