CN109293059A - The oil gas field sewage disposal system and method separated using air bearing and high-efficiency cyclone - Google Patents
The oil gas field sewage disposal system and method separated using air bearing and high-efficiency cyclone Download PDFInfo
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- CN109293059A CN109293059A CN201811259344.9A CN201811259344A CN109293059A CN 109293059 A CN109293059 A CN 109293059A CN 201811259344 A CN201811259344 A CN 201811259344A CN 109293059 A CN109293059 A CN 109293059A
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- Prior art keywords
- efficiency cyclone
- flotation tank
- cyclone separator
- reactor
- gas field
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a kind of oil gas field sewage disposal systems and method separated using air bearing and high-efficiency cyclone, and system includes collecting pit, flotation tank, pre-reactor, chemicals dosing plant, high-efficiency cyclone separator；Collecting pit, flotation tank, pre-reactor, high-efficiency cyclone separator connection；Chemicals dosing plant is connected to flotation tank, pre-reactor.Oil gas field production water initially enters collecting pit and is collected, flotation tank is promoted to by elevator pump, remove that a part of machine is miscellaneous and non-solubility oil content in flotation tank, flotation tank water outlet is entered, and pass through chemicals dosing plant corresponding chemical agent is added into pre-reactor to pre-reactor simultaneously, enter after being sufficiently mixed high-efficiency cyclone separator carry out three phase separation, high-efficiency cyclone separator removes remaining oil content and machine is miscellaneous, and high-efficiency cyclone separator water outlet carries out re-injection and enters in oil well.Handling rate of the present invention is high, and oil content and the miscellaneous handling rate of machine are all up to 99%；System operation is more stable, and anti impulsion load is stronger；Water outlet can satisfy higher index request.
Description
Technical field
The invention belongs to environmental technology field, it is related to a kind of sewage disposal system and method, and in particular to a kind of to utilize gas
The oil gas field sewage disposal system and method for floating and high-efficiency cyclone separation.
Background technique
With deepening continuously for China's oil-gas field development, oil gas field sewage handling problem is also given birth to therewith, and wherein air bearing is made
For a kind of water purification technology, the increasingly attention by petroleum gas chemical industry.Currently, removing some onshore oil gas fields both at home and abroad
Outside using air flotation technology, the oily wastewaters such as offshore platform and petrochemical industry all use air bearing as intermediate treatment unit, naturally
Gas disposal factory also increases air-floating apparatus.Air flotation technology principle is that air is passed through into water, makes to generate a large amount of fine gas in water
Bubble, and it is promoted to be adhered on magazine particle, floating body having a specific gravity smaller than that of water, upper floatation surface are formed, to obtain separation impurity
A kind of process for purifying water.In such a way that bubble generates, air bearing can be divided into air-dissolving air-float, inflation air bearing, electrofloatation etc..Air bearing process
It is generated including bubble, bubble and particle (solid or liquid) adhere to and float and the consecutive steps such as separate.Realize gas floatation process separation
Necessary condition there are two: first, it is necessary to provide sufficient amount of micro air bubble into water, bubble ideal dimensions are 15~30 μ
m；Second, it is necessary to make purpose object in suspension or hydrophobic property, to be attached to bubble floating.
Other than air-float technology, there are also a kind of techniques to be slowly extended to water of oil-gas field processing.The hair of cyclone separator
It is bright, using the separation of solid and liquid and Liquid liquid Separation being used primarily in ore dressing process, have about as long as a century and a half away from the present, extensively
It is general to be applied to the fields such as solid-liquid, liquid liquid, gas-liquid and gas solid separation.With cyclone separation process, the development of water treatment field and ring
Border requires increasingly strict, and various cyclone separators come into being.Wherein hydrocyclone is as a kind of novel oil field produced
Water treatment facilities, because its is compact-sized, light, efficient, space utilization rate is high, and many advantages such as simple process, low-cost
Show one's talent in petroleum industry field.Scientific research experience, engineering practice and field application for many years the result shows that, cyclonic separation skill
Art is applied to grease, is separated by solid-liquid separation that there is the wide of technical feasibility, necessity economically and engineer application in field
Wealthy prospect.
In terms of oily waste water treatment, the Con trolling index of suspended matter is very stringent.Oilfield sewage, especially oil field extracted water are more
For re-injection, and the suspended matter in reinjected water is oily wastewater one of the main reason for causing formation blockage, oil transportation channel blocking
The presence of middle oil content, so that suspended matter is difficult to be effectively separated with liquid, therefore in terms of oily waste water treatment, to solid-liquid point
Requirements at the higher level are proposed from technology.Traditional independent treatment process is all lacking in terms of handling rate and stability, and water quality is held
It easily forms oil, precipitating, water to be not completely separated, is unable to satisfy the processing requirement of oily wastewater at present.
Summary of the invention
In order to solve the technical problems such as the handling rate encountered in traditional single treatment technical process is low, stability is poor, this
Invention provides a kind of oil gas field sewage disposal system and method separated using air bearing and high-efficiency cyclone.
Technical solution used by system of the invention is: a kind of oil gas field sewage separated using air bearing and high-efficiency cyclone
Processing system, it is characterised in that: including collecting pit, flotation tank, pre-reactor, chemicals dosing plant, high-efficiency cyclone separator；
The collecting pit, flotation tank, pre-reactor, high-efficiency cyclone separator are connected to by pipeline；The collecting pit setting
There is water inlet, the high-efficiency cyclone separator is provided with water outlet；
The chemicals dosing plant is connected to the flotation tank, pre-reactor respectively by pipeline.
Technical solution used by method of the invention is: a kind of oil gas field sewage separated using air bearing and high-efficiency cyclone
Processing method, it is characterised in that: oil gas field production water initially enters collecting pit and is collected, and is promoted to air bearing by elevator pump
Pond, while corresponding chemical agent is added into flotation tank by chemicals dosing plant, it is miscellaneous and non-that a part of machine is removed in flotation tank
Dissolubility oil content, flotation tank water outlet is entered, and pass through chemicals dosing plant corresponding chemical drugs are added into pre-reactor to pre-reactor simultaneously
Agent, high-efficiency cyclone separator of entering after being sufficiently mixed medicament and sewage carry out three phase separation, and high-efficiency cyclone separator removal is surplus
Remaining oil content and machine is miscellaneous, and high-efficiency cyclone separator water outlet carries out re-injection and enters in oil well.
The present invention also provides a kind of oil gas field sewage water treatment method separated using air bearing and high-efficiency cyclone, feature exists
In: oil gas field production water initially enters collecting pit and is collected, and is promoted to flotation tank by elevator pump, while passing through chemicals dosing plant
Corresponding chemical agent is added into flotation tank, removes that a part of machine is miscellaneous and non-solubility oil content in flotation tank, flotation tank goes out
Water is entered, and pass through chemicals dosing plant corresponding chemical agent is added into pre-reactor to pre-reactor simultaneously, keeps medicament and sewage abundant
High-efficiency cyclone separator of entering after mixing carries out three phase separation, and high-efficiency cyclone separator removes remaining oil content and machine is miscellaneous, efficiently
The machine of cyclone separator water outlet into first filter removal residual fraction is miscellaneous and oil content, first filter water outlet carry out re-injection and enter
In oil well.
The present invention also provides a kind of oil gas field sewage water treatment method separated using air bearing and high-efficiency cyclone, feature exists
In: oil gas field production water initially enters collecting pit and is collected, and is promoted to flotation tank by elevator pump, while passing through chemicals dosing plant
Corresponding chemical agent is added into flotation tank, removes that a part of machine is miscellaneous and non-solubility oil content in flotation tank, flotation tank goes out
Water is entered, and pass through chemicals dosing plant corresponding chemical agent is added into pre-reactor to pre-reactor simultaneously, keeps medicament and sewage abundant
High-efficiency cyclone separator of entering after mixing carries out three phase separation, and high-efficiency cyclone separator removes remaining oil content and machine is miscellaneous, efficiently
The machine of cyclone separator water outlet into first filter removal residual fraction is miscellaneous and oil content, first filter water outlet enter the second mistake
Final process is carried out in filter, the water outlet of the second filter carries out re-injection and enters in oil well.
Compared with the existing technology, the invention has the following advantages:
(1) handling rate is high, and oil content and the miscellaneous handling rate of machine are all up to 99%；
(2) system operation is more stable, and anti impulsion load is stronger；
(3) water outlet can satisfy higher index request.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of first embodiment of the invention；
Fig. 2 is the structural schematic diagram of second embodiment of the invention；
Fig. 3 is the structural schematic diagram of third embodiment of the invention.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, with reference to the accompanying drawings and embodiments to this hair
It is bright to be described in further detail, it should be understood that implementation example described herein is merely to illustrate and explain the present invention, not
For limiting the present invention.
Referring to Fig.1, a kind of oil gas field sewage disposal system separated using air bearing and high-efficiency cyclone provided in this embodiment,
Including collecting pit 1, flotation tank 2, pre-reactor 3, chemicals dosing plant 4, high-efficiency cyclone separator 5；It is collecting pit 1, flotation tank 2, pre- anti-
Device 3, high-efficiency cyclone separator 5 is answered to be sequentially communicated by pipeline；Collecting pit 1 is provided with water inlet, and high-efficiency cyclone separator 5 is arranged
There is water outlet；Chemicals dosing plant 4 is connected to flotation tank 2, pre-reactor 3 respectively by pipeline.Collecting pit 1,2 connecting pipe of flotation tank
On, elevator pump is provided on flotation tank 2,3 connecting pipe of pre-reactor.
In the present embodiment, oil gas field production water initially enters collecting pit 1 and is collected, and is promoted to flotation tank by elevator pump
2, while corresponding chemical agent is added into flotation tank 2 by chemicals dosing plant 4, removed in flotation tank 2 a part of machine it is miscellaneous and
Non-solubility oil content, flotation tank 2 are discharged pre-reactor 3 of entering and are added simultaneously into pre-reactor 3 accordingly by chemicals dosing plant 4
Chemical agent, high-efficiency cyclone separator 5 of entering after being sufficiently mixed medicament and sewage carry out three phase separation, high-efficiency cyclone separator
The remaining oil content of 5 removals and machine are miscellaneous, and the water outlet of high-efficiency cyclone separator 5 carries out re-injection and enters in oil well.
The present embodiment has following advantages:
(1) handling rate is high；
(2) system is stablized.
See Fig. 2, a kind of oil gas field sewage disposal system separated using air bearing and high-efficiency cyclone provided in this embodiment,
Including collecting pit 1, flotation tank 2, pre-reactor 3, chemicals dosing plant 4, high-efficiency cyclone separator 5, first filter 6；Collecting pit 1,
Flotation tank 2, pre-reactor 3, high-efficiency cyclone separator 5, first filter 6 are sequentially communicated by pipeline；Collecting pit 1 be provided with into
The mouth of a river, first filter 6 are provided with water outlet；Chemicals dosing plant 4 is connected to by pipeline with pre-reactor 3.Collecting pit 1, flotation tank 2
On connecting pipe, elevator pump is provided on flotation tank 2,3 connecting pipe of pre-reactor.
In the present embodiment, oil gas field production water initially enters collecting pit 1 and is collected, and is promoted to flotation tank by elevator pump
2, while corresponding chemical agent is added into flotation tank 2 by chemicals dosing plant 4, removed in flotation tank 2 a part of machine it is miscellaneous and
Non-solubility oil content, flotation tank 2 are discharged pre-reactor 3 of entering and are added simultaneously into pre-reactor 3 accordingly by chemicals dosing plant 4
Chemical agent, high-efficiency cyclone separator 5 of entering after being sufficiently mixed medicament and sewage carry out three phase separation, high-efficiency cyclone separator
5 remove most of oil contents and machine is miscellaneous, the water outlet of high-efficiency cyclone separator 5 enter first filter 6 remove residual fraction machine it is miscellaneous and
Oil content, the water outlet of first filter 6 carry out re-injection and enter in oil well.
The present embodiment has following advantages:
(1) handling rate is high；
(2) system run all right；
(3) water outlet can satisfy higher index request.
See Fig. 3, a kind of oil gas field sewage disposal system separated using air bearing and high-efficiency cyclone provided in this embodiment,
It is filtered including collecting pit 1, flotation tank 2, pre-reactor 3, chemicals dosing plant 4, high-efficiency cyclone separator 5, first filter 6, second
Device 7；Collecting pit 1, flotation tank 2, pre-reactor 3, high-efficiency cyclone separator 5, first filter 6, the second filter 7 pass through pipeline
It is sequentially communicated；Collecting pit 1 is provided with water inlet, and the second filter 7 is provided with water outlet；Chemicals dosing plant 4 passes through pipeline and pre- anti-
Device 3 is answered to be connected to.On collecting pit 1,2 connecting pipe of flotation tank, promotion is provided on flotation tank 2,3 connecting pipe of pre-reactor
Pump.
In the present embodiment, oil gas field production water initially enters collecting pit 1 and is collected, and is promoted to flotation tank by elevator pump
2, while corresponding chemical agent is added into flotation tank 2 by chemicals dosing plant 4, removed in flotation tank 2 a part of machine it is miscellaneous and
Non-solubility oil content, flotation tank 2 are discharged pre-reactor 3 of entering and are added simultaneously into pre-reactor 3 accordingly by chemicals dosing plant 4
Chemical agent, high-efficiency cyclone separator 5 of entering after being sufficiently mixed medicament and sewage carry out three phase separation, high-efficiency cyclone separator
5 remove most of oil contents and machine is miscellaneous, the water outlet of high-efficiency cyclone separator 5 enter first filter 6 remove residual fraction machine it is miscellaneous and
Oil content, the water outlet of first filter 6, which enters in the second filter 7, carries out final process, and the water outlet of the second filter 7 carries out re-injection and enters oil
In well.
The present embodiment has following advantages:
(1) handling rate is high, and oil content and the miscellaneous handling rate of machine are all up to 99%；
(2) system operation is more stable, and anti impulsion load is stronger；
(3) water outlet can satisfy higher index request.
Amounting in this system chemicals dosing plant 4 has 5 kinds of medicaments: demulsifier, oxidant, sodium hydroxide, flocculant, flocculation aid；
Demulsifier and oxidant add at flotation tank inlet pipeline, enter flotation tank after carrying out liquid medicine mixing via pipe-line mixer,
Sodium hydroxide, flocculant, flocculation aid are added at pre-reactor, enter high-efficiency cyclone separator after liquid medicine mixing.Wherein
Demulsifier matched proportion density be 2.5%~5%, oxidant matched proportion density be 5%~10%, sodium hydroxide matched proportion density be 5%~
10%, flocculant matched proportion density is 5%~10%, and flocculation aid matched proportion density is 1 ‰~2 ‰.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present invention
Benefit requires to make replacement or deformation under protected ambit, fall within the scope of protection of the present invention, this hair
It is bright range is claimed to be determined by the appended claims.
Claims (9)
1. a kind of oil gas field sewage disposal system separated using air bearing and high-efficiency cyclone, it is characterised in that: including collecting pit
(1), flotation tank (2), pre-reactor (3), chemicals dosing plant (4), high-efficiency cyclone separator (5)；
The collecting pit (1), flotation tank (2), pre-reactor (3), high-efficiency cyclone separator (5) are connected to by pipeline；The receipts
Ji Chi (1) is provided with water inlet, and the high-efficiency cyclone separator (5) is provided with water outlet；
The chemicals dosing plant (4) is connected to the flotation tank (2), pre-reactor (3) respectively by pipeline.
2. the oil gas field sewage disposal system according to claim 1 separated using air bearing and high-efficiency cyclone, feature are existed
In: the system is also configured with the first filter (6), and high-efficiency cyclone separator (5) passes through pipeline and first filter (6)
Connection.
3. the oil gas field sewage disposal system according to claim 1 separated using air bearing and high-efficiency cyclone, feature are existed
In: the system is also configured with the first filter (6), the second filter (7), the high-efficiency cyclone separator (5), first
Filter (6), the second filter (7) pass through pipeline sequential communication.
4. the oil gas field sewage treatment system separated using air bearing and high-efficiency cyclone according to claim 1 to 3
System, it is characterised in that: on the collecting pit (1), flotation tank (2) connecting pipe, flotation tank (2), pre-reactor (3) connecting pipe
On be provided with elevator pump.
5. a kind of oil gas field sewage water treatment method separated using air bearing and high-efficiency cyclone, it is characterised in that: oil gas field produces water
It initially enters collecting pit (1) to be collected, be promoted to flotation tank (2) by elevator pump, while passing through chemicals dosing plant (4) to air bearing
Corresponding chemical agent is added in pond (2), a part of machine of removal is miscellaneous in flotation tank (2) and non-solubility oil content, flotation tank (2)
Water outlet enters pre-reactor (3) simultaneously by chemicals dosing plant (4) to the interior corresponding chemical agent of addition of pre-reactor (3), makes medicine
Agent and sewage enter after being sufficiently mixed high-efficiency cyclone separator (5) carry out three phase separation, high-efficiency cyclone separator (5) removal is remaining
Oil content and machine it is miscellaneous, high-efficiency cyclone separator (5) water outlet carry out re-injection enter in oil well.
6. a kind of oil gas field sewage water treatment method separated using air bearing and high-efficiency cyclone, it is characterised in that: oil gas field produces water
It initially enters collecting pit (1) to be collected, be promoted to flotation tank (2) by elevator pump, while passing through chemicals dosing plant (4) to air bearing
Corresponding chemical agent is added in pond (2), a part of machine of removal is miscellaneous in flotation tank (2) and non-solubility oil content, flotation tank (2)
Water outlet enters pre-reactor (3) simultaneously by chemicals dosing plant (4) to the interior corresponding chemical agent of addition of pre-reactor (3), makes medicine
Agent and sewage enter after being sufficiently mixed high-efficiency cyclone separator (5) carry out three phase separation, high-efficiency cyclone separator (5) removes big portion
Point oil content and machine are miscellaneous, high-efficiency cyclone separator (5) water outlet enter first filter (6) removal residual fraction machine is miscellaneous and oil content,
First filter (6) water outlet carries out re-injection and enters in oil well.
7. a kind of oil gas field sewage water treatment method separated using air bearing and high-efficiency cyclone, it is characterised in that: oil gas field produces water
It initially enters collecting pit (1) to be collected, be promoted to flotation tank (2) by elevator pump, while passing through chemicals dosing plant (4) to air bearing
Corresponding chemical agent is added in pond (2), a part of machine of removal is miscellaneous in flotation tank (2) and non-solubility oil content, flotation tank (2)
Water outlet enters pre-reactor (3) simultaneously by chemicals dosing plant (4) to the interior corresponding chemical agent of addition of pre-reactor (3), makes medicine
Agent and sewage enter after being sufficiently mixed high-efficiency cyclone separator (5) carry out three phase separation, high-efficiency cyclone separator (5) removes big portion
Point oil content and machine are miscellaneous, high-efficiency cyclone separator (5) water outlet enter first filter (6) removal residual fraction machine is miscellaneous and oil content,
First filter (6) water outlet, which enters, carries out final process in the second filter (7), the second filter (7) water outlet carries out re-injection and enters
In oil well.
8. the oil gas field sewage treatment side separated according to claim 5-7 any one using air bearing and high-efficiency cyclone
Method, it is characterised in that: the medicament in the chemicals dosing plant (4) is demulsifier, oxidant, sodium hydroxide, flocculant, flocculation aid；
The demulsifier and oxidant add at flotation tank (2) inlet pipeline, enter after carrying out liquid medicine mixing via pipe-line mixer
Flotation tank (2)；The sodium hydroxide, flocculant, flocculation aid are added at pre-reactor (3), enter height after liquid medicine mixing
It imitates cyclone separator (5).
9. the oil gas field sewage water treatment method according to claim 8 separated using air bearing and high-efficiency cyclone, feature are existed
In: the demulsifier matched proportion density is 2.5%~5%, and oxidant matched proportion density is 5%~10%, sodium hydroxide matched proportion density
It is 5%~10%, flocculant matched proportion density is 5%~10%, and flocculation aid matched proportion density is 1 ‰~2 ‰.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259344.9A CN109293059A (en) | 2018-10-26 | 2018-10-26 | The oil gas field sewage disposal system and method separated using air bearing and high-efficiency cyclone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259344.9A CN109293059A (en) | 2018-10-26 | 2018-10-26 | The oil gas field sewage disposal system and method separated using air bearing and high-efficiency cyclone |
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ID=65159035
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| CN101113035A (en) * | 2007-06-22 | 2008-01-30 | 中国石油大学(北京) | Method for treating oil refining sewage by employing multi-stage inflatable cyclonic current technology |
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