CN107021584A - Circulating type electrochemical gel breaking device and method for oilfield fracturing wastewater - Google Patents
Circulating type electrochemical gel breaking device and method for oilfield fracturing wastewater Download PDFInfo
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- CN107021584A CN107021584A CN201710348749.9A CN201710348749A CN107021584A CN 107021584 A CN107021584 A CN 107021584A CN 201710348749 A CN201710348749 A CN 201710348749A CN 107021584 A CN107021584 A CN 107021584A
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- waste water
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- oil field
- wastewater
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides a circulating electrochemical gel breaking device and method for oilfield fracturing wastewater, wherein the gel breaking device comprises a reactor, an electrolytic bath and a direct-current power supply; the lower half part of the reactor is provided with a wastewater inlet and a wastewater outlet, and the upper half part of the reactor is provided with an overflow port (namely a gel breaking liquid outlet) and a gel breaking liquid inlet; the bottom of the electrolytic cell is provided with an electrolyte inlet, and the top of the electrolytic cell is provided with an electrolyte outlet; a lower circulating pipe and an upper circulating pipe are arranged between the reactor and the electrolytic bath, the lower circulating pipe is connected with a wastewater outlet and an electrolyte inlet, and the upper circulating pipe is connected with an electrolyte outlet and a gel breaking liquid inlet; the electrolytic bath is connected with a direct current power supply through a lead cable arranged between the electrolytic bath and the direct current power supply. The treatment technology overcomes the defects of large dosage, high treatment cost, inconvenient operation, large occupied space of treatment equipment, low efficiency and the like caused by adding the gel breaker into the gel breaking of the existing fracturing wastewater.
Description
Technical field
The present invention relates to the technical field of oil field compression fracture wastewater treatment, and in particular to a kind of oil field compression fracture waste water breaks the dress of glue
Put and method.
Background technology
The aqueous fracturing fluid used in oil-gas mining fracturing process needs the row of returning ground thus production after the completion of pressing crack construction
Raw substantial amounts of fracturing wastewater.Water-based fracturing waste water in addition to containing plurality of inorganic salt also usually containing it is a variety of to the mankind, animal and
The harmful pollutant of environment, such as contains benzene, ethylbenzene, toluene and dimethylbenzene arene material, is given up for pressure break is reduced or avoided
The adverse effect that water is caused to environment, it is necessary to effective harmless treatment is carried out to fracturing wastewater.
Aqueous fracturing fluid can typically add a certain amount of thickening agent, friendship because of processing performances such as control filter loss, outstanding sand abilities
Connection agent etc. makes it contain high molecular polymer to reach certain viscosity, and this is accomplished by fully breaking it glue in favor of fracturing fluid
The row of returning and follow-up fracturing wastewater harmless treatment.At present, the broken glue of fracturing wastewater causes pressure break frequently with addition gel breaker
High molecular polymer degraded or catalyzing hydrolysis in waste water are realized（Such as Wang Yan is big, Xiao Yan is edited《Oil field chemical is produced
With synthesis》（Petroleum industry publishing house）P39 addresses some oxidants such as persulfate, percarbonate, potassium permanganate, tert-butyl group mistake
Hydrogen oxide frequently as the natural plant gum such as sesbania gum thickening agent gel breaker, and enzyme can as glycan class thickening agent gel breaker）, but
The pharmaceutical quantities of these treatment technologies addition are larger, and processing cost is higher, inconvenient operation, and processing equipment space-consuming is big, efficiency
It is relatively low.Therefore develop effective fracturing wastewater and break adhesive dispenser and method as a kind of real needs.
The content of the invention
The present invention provides a kind of oil field compression fracture waste water circulation formula electrochemistry and breaks adhesive dispenser, including reactor, electrolytic cell and straight
Flow power supply；The lower half of the reactor is provided with waste water inlet and wastewater outlet, and the first half is provided with overfall（Namely breaking glue solution goes out
Mouthful）With breaking glue solution import；The bottom of the electrolytic cell is provided with electrolyte inlet, and top is provided with electrolyte outlet；The reactor
Lower circulation pipe and upper circular tube are provided between electrolytic cell, lower the circulation pipe connection wastewater outlet and electrolyte inlet are described
Upper circular tube connects electrolyte outlet and breaking glue solution import；The electrolytic cell passes through located at leader cable therebetween with dc source
Connection.
The device produces oxidisability in the case of logical direct current using electrolyte such as the chlorides contained in fracturing wastewater
Material so that the high molecular polymer degraded in fracturing wastewater, realizes the broken glue of fracturing wastewater.Also, due to above-mentioned circulation knot
The setting of structure, operationally suitable control wastewater flow, you can the waste water of broken glue requirement needed for overfall is produced and reached.At this
Reason technology overcomes that the pharmaceutical quantities brought of addition gel breaker are larger, and processing cost is higher, inconvenient operation, and processing equipment takes empty
Between it is big, the shortcomings of less efficient.
Wherein, operationally, oil field compression fracture waste water enters reactor from waste water inlet, and waste water is imported into electricity by lower circulation pipe
Trench bottom is solved, waste water flows out after electrolytic tank electrolysis from top, then reactor is led back to by upper circular tube, not up to break glue requirement
Waste water flows to reactor lower half and continues cycling through brokenly glue, and the qualified waste water in top flows out from overfall.In the process, by outside
Flow and electrolytic tank electrolysis into the waste water of reactor are produced and up gas push the circulation of waste water in the apparatus
Flowing.
Further, electrode slice is vertically set in the electrolytic cell.During being somebody's turn to do, it is broken by electrolysis that waste water " passes by " electrode slice
Glue, and then flowed away at the top of electrolytic cell.
Further, the location of described waste water inlet is the location of less than described wastewater outlet, and waste water inlet and
Wastewater outlet is oppositely arranged.Such setting can preferably in settled wastewater impurity（Deposit can be from following reactors
The sewage draining exit of bottom and the sewage draining exit of bottom of electrolytic tank are periodically discharged）, then enter back into electrolytic cell and be electrolysed, it is to avoid or reduce
The blocking of electrolytic cell and pipeline.
Further, the location of described overfall is the location of higher than described breaking glue solution import, and overfall and broken
Glue import is oppositely arranged.Such setting can be such that waste water is then exhausted from after glue requirement is sufficiently achieved brokenly.
Further, in the reactor, provided with filtering silk screen or offscum catcher between overfall and breaking glue solution import.
Filtering silk screen or offscum catcher can capture waste water itself carry and wastewater electrolytic during the offscum that produces, make overfall
The waste water of discharge is more suitable for subsequent treatment.
Further, the top of the reactor is provided with exhaust outlet.The exhaust outlet can discharge waste water itself and contain or be electrolysed
During the gas that produces.
Further, the bottom of the reactor is provided with reactor sewage draining exit, the dirt deposited for discharging in reactor.
Further, the bottom of the electrolytic cell is provided with electrolytic cell sewage draining exit, the dirt for discharging electrolytic cell deposition.It is more excellent
Selection of land, the electrolytic cell sewage draining exit is provided close on the lower circulation pipe of electrolyte inlet.
Reactor auxiliary described further is provided with heat exchanger.Heat exchanger can be a variety of known types, can using heat exchanger
Further the efficiency of glue is broken in lifting.
The present invention also provides a kind of method that oil field compression fracture waste water breaks glue, and it is given up using any of the above-described described oil field compression fracture
Water circulation type electrochemistry breaks adhesive dispenser and carries out the broken glue of circulating electrochemistry.
Brief description of the drawings
Fig. 1 is the structural representation that oil field compression fracture waste water circulation formula electrochemistry of the present invention breaks adhesive dispenser.
Fig. 2 is the structural representation that another oil field compression fracture waste water circulation formula electrochemistry of the invention breaks adhesive dispenser, wherein overflowing
The relative position and Fig. 1 difference of the relative position and waste water inlet and wastewater outlet of head piece and breaking glue solution import.
The implication of label is as follows in figure：1 is lower circulation pipe, and 2 be reactor, and 3 be reactor sewage draining exit, and 4 be waste water inlet,
5 be cooling water inlet, and 6 be heat exchanger, and 7 be coolant outlet, and 8 be overfall, and 9 be exhaust outlet, and 10 be upper circular tube, and 11 be to lead
Line cable, 12 be cathode terminal, and 13 be anode terminal, and 14 be electrode slice, and 15 be electrolytic cell, and 16 be electrolytic cell sewage draining exit,
17 be dc source, and 18 be wastewater outlet, and 19 be breaking glue solution import, and 20 be electrolyte inlet, and 21 be electrolyte outlet.
Embodiment
Below by way of embodiment, the invention will be further described, but is not intended to limit the invention.
Oil field compression fracture waste water circulation formula electrochemistry of the present invention breaks adhesive dispenser as depicted in figs. 1 and 2, including an electricity
Groove 15 is solved, there is electrode slice 14 in electrolytic cell, electrolytic cell 15 passes through the wire that is connected on cathode terminal 12 and anode terminal 13
Cable 11 is connected with dc source 17.Electrolytic cell 15 is connected by upper circular tube 10 and lower circulation pipe 1 with reactor 2, under
The bottom of circulation pipe 1 is provided with electrolytic cell sewage draining exit 16.The bottom of reactor 2 is provided with reactor sewage draining exit 3, and top is provided with exhaust outlet 9, in
Bottom is provided with waste water inlet 4, and middle and upper part is provided with overfall 8, and the middle part of reactor 2 sets heat exchanger 6, and the bottom of heat exchanger 6 sets cooling water
Import 5, top sets coolant outlet 7.
The shape of the reactor 2 can be case with bottom plate and cover plate or have the cylinder of upper low head.
The electrolytic cell 15 is undivided cell, and its electrode can be acyclic type or bipolar type, and electrode shape can be with
Column, tubular or tabular, electrode coating using not pole or can pole compound analysis chloride electrode formula（It is commercially available）.Figure
Electrode in 1 and Fig. 2 is bipolar type, electrode shape tabular, electrode coating using can pole compound analysis chloride electrode formula.
The fracturing wastewater of mechanical admixture is removed with certain flow from waste water inlet 4 into reactor 2 by pretreatment, then is entered
Enter electrolytic cell 15, electrolytic cell 15 connects direct current, the electrolyte such as sodium chloride that waste water contains in electrolytic cell 15 is made in direct current
With lower by electrolytic tank electrode generation electrochemical reaction, produce oxidizing substance and the high molecular polymer in fracturing wastewater is filled
Divide degraded, realize the broken glue of fracturing wastewater.In this process, the castering action for the gas that electrolytic process is produced passes through waste water upper
Circulation pipe 10 is brought gas after reactor 2, gas-liquid separation into and discharged from exhaust outlet 9, the descending dirt deposition of wastewater liquid to reactor
Bottom timing is discharged from reactor sewage draining exit 3, and wastewater liquid enters the cyclic electrolysis of electrolytic cell 15 by lower circulation pipe 1.A part
Waste water by the broken glue of electrolysis goes out from the overflow of overfall 8.
In the said equipment, with flow 1m3/H will remove the fracturing wastewater of mechanical admixture（Viscosity 60mPaS）Send into reactor
2 carry out the broken glue of electrolysis, and after circulating 30 minutes, the viscosity for the breaking glue solution waste water discharged from overfall is less than 5mPaS.
Claims (10)
1. a kind of oil field compression fracture waste water circulation formula electrochemistry breaks adhesive dispenser, including reactor（2）, electrolytic cell（15）And dc source
（17）；The reactor（2）Lower half be provided with waste water inlet（4）And wastewater outlet（18）, the first half is provided with overfall（8）With
Breaking glue solution import（19）；The electrolytic cell（15）Bottom be provided with electrolyte inlet（20）, top is provided with electrolyte outlet（21）；
The reactor（2）And electrolytic cell（15）Between be provided with lower circulation pipe（1）And upper circular tube（10）, the lower circulation pipe（1）Even
Connect wastewater outlet（18）And electrolyte inlet（20）, the upper circular tube（10）Connect electrolyte outlet（21）With breaking glue solution import
（19）；The electrolytic cell（15）With dc source（17）By located at leader cable therebetween（11）Connection.
2. oil field compression fracture waste water circulation formula electrochemistry according to claim 1 breaks adhesive dispenser, it is characterised in that the electrolysis
Groove（15）Electrode slice is inside vertically set（14）.
3. oil field compression fracture waste water circulation formula electrochemistry according to claim 1 breaks adhesive dispenser, it is characterised in that the waste water
Import（4）Location is less than the wastewater outlet（18）Location, and waste water inlet（4）And wastewater outlet（18）Phase
To setting.
4. oil field compression fracture waste water circulation formula electrochemistry according to claim 1 breaks adhesive dispenser, it is characterised in that the overflow
Mouthful（8）Location is higher than the breaking glue solution import（19）Location, and overfall（8）With breaking glue solution import（19）Phase
To setting.
5. oil field compression fracture waste water circulation formula electrochemistry according to claim 1 breaks adhesive dispenser, it is characterised in that the reaction
Device（2）It is interior, in overfall（8）With breaking glue solution import（19）Between provided with filtering silk screen or offscum catcher.
6. the oil field compression fracture waste water circulation formula electrochemistry according to any one of claim 1 to 5 breaks adhesive dispenser, its feature exists
In the reactor（2）Top be provided with exhaust outlet（9）.
7. the oil field compression fracture waste water circulation formula electrochemistry according to any one of claim 1 to 5 breaks adhesive dispenser, its feature exists
In the reactor（2）Bottom be provided with reactor sewage draining exit（3）.
8. the oil field compression fracture waste water circulation formula electrochemistry according to any one of claim 1 to 5 breaks adhesive dispenser, its feature exists
In the electrolytic cell（15）Bottom be provided with electrolytic cell sewage draining exit（16）.
9. the oil field compression fracture waste water circulation formula electrochemistry according to any one of claim 1 to 5 breaks adhesive dispenser, its feature exists
In the reactor（2）Auxiliary is provided with heat exchanger（6）.
10. a kind of method that oil field compression fracture waste water breaks glue, it is characterised in that utilize the oil field described in any one of claim 1 to 9
The circulating electrochemistry of fracturing wastewater breaks adhesive dispenser and carries out the broken glue of circulating electrochemistry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348749.9A CN107021584A (en) | 2017-05-17 | 2017-05-17 | Circulating type electrochemical gel breaking device and method for oilfield fracturing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348749.9A CN107021584A (en) | 2017-05-17 | 2017-05-17 | Circulating type electrochemical gel breaking device and method for oilfield fracturing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107021584A true CN107021584A (en) | 2017-08-08 |
Family
ID=59529772
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348749.9A Withdrawn CN107021584A (en) | 2017-05-17 | 2017-05-17 | Circulating type electrochemical gel breaking device and method for oilfield fracturing wastewater |
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| CN (1) | CN107021584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716074A (en) * | 2021-01-04 | 2022-07-08 | 山东海岸线环保科技有限公司 | Harmless treatment device for oil-gas field operation waste liquid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030098247A1 (en) * | 2001-10-22 | 2003-05-29 | Omega Co., Ltd. | Waste fluid or waste water treatment method and its apparatus |
| JP2007057203A (en) * | 2005-08-26 | 2007-03-08 | Hiroshi Tanaka | Cooling water circulating device |
| CN203200042U (en) * | 2013-03-29 | 2013-09-18 | 北京矿冶研究总院 | Multifunctional water purifier |
| CN203593647U (en) * | 2013-10-08 | 2014-05-14 | 中国石油天然气集团公司 | Reactor for treating oil field sewage through chemical method |
| CN204417185U (en) * | 2014-12-30 | 2015-06-24 | 沈阳碧海环保技术有限公司 | A kind of circulating water cooling device |
| CN106430740A (en) * | 2016-12-08 | 2017-02-22 | 中国石油天然气股份有限公司 | Process suitable for treating polymer flooding injection allocation pipeline flushing waste liquid in oil fields |
| CN206767829U (en) * | 2017-05-17 | 2017-12-19 | 天津寰宜环保科技有限公司 | Circulating electrochemistry gel breaking device of oil field fracturing waste water |
-
2017
- 2017-05-17 CN CN201710348749.9A patent/CN107021584A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030098247A1 (en) * | 2001-10-22 | 2003-05-29 | Omega Co., Ltd. | Waste fluid or waste water treatment method and its apparatus |
| JP2007057203A (en) * | 2005-08-26 | 2007-03-08 | Hiroshi Tanaka | Cooling water circulating device |
| CN203200042U (en) * | 2013-03-29 | 2013-09-18 | 北京矿冶研究总院 | Multifunctional water purifier |
| CN203593647U (en) * | 2013-10-08 | 2014-05-14 | 中国石油天然气集团公司 | Reactor for treating oil field sewage through chemical method |
| CN204417185U (en) * | 2014-12-30 | 2015-06-24 | 沈阳碧海环保技术有限公司 | A kind of circulating water cooling device |
| CN106430740A (en) * | 2016-12-08 | 2017-02-22 | 中国石油天然气股份有限公司 | Process suitable for treating polymer flooding injection allocation pipeline flushing waste liquid in oil fields |
| CN206767829U (en) * | 2017-05-17 | 2017-12-19 | 天津寰宜环保科技有限公司 | Circulating electrochemistry gel breaking device of oil field fracturing waste water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716074A (en) * | 2021-01-04 | 2022-07-08 | 山东海岸线环保科技有限公司 | Harmless treatment device for oil-gas field operation waste liquid |
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