CN107459191A - A kind of new and effective sewage treatment system of oilfield - Google Patents
A kind of new and effective sewage treatment system of oilfield Download PDFInfo
- Publication number
- CN107459191A CN107459191A CN201610388068.0A CN201610388068A CN107459191A CN 107459191 A CN107459191 A CN 107459191A CN 201610388068 A CN201610388068 A CN 201610388068A CN 107459191 A CN107459191 A CN 107459191A
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- Prior art keywords
- sewage
- oilfield
- heat exchanger
- pretreatment
- treatment system
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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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)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention proposes the sewage treatment system of oilfield that a kind of new and effective pretreatment system and advanced treatment system are combined, mainly by gravity separator, fluid reservoir, feed pump, heat exchanger 1., heat exchanger 2., heat exchanger 3., blender, delivery pump, evaporator, compressor, boiler, oil extraction system form.Pretreatment system carries out preliminary treatment to oilfield sewage, and oilfield sewage is filtered out to the sewage by pretreatment using gravity separator.Pretreated sewage is heated by high temperature and high pressure steam and steam condensate respectively, and caused concentrate returns to knockout drum and continues to separate after by thermal evaporation, and the condensate after heat exchange enters boiler as boiler replenishing water.It is combined by two processes of sewage disinfection treatment and advanced treating, using high-temperature produced fluid residual heat, realizes the efficient process of oilfield sewage, and advanced treatment system realizes internal system heat exchange, saves outside power consumption, improves economy.
Description
Technical field
The present invention relates to the pretreatment and advanced treatment system of sewage treatment system of oilfield in petroleum industry, more particularly to sewage
System, both are combined and form Efficient Cycle.
Background technology
Oil is a kind of important strategic resource, has important work to national economic development and the raising of living standards of the people
With.For a long time during oil exploitation, caused trade effluent after simple precipitation and water-oil separating merely through just arranging
Put, great destruction is caused to ecological environment, while also result in the waste of resource.
At present, major part oil field in China's has been enter into the middle and later periods of oil development, the water content in Produced Liquid for 70%~
80%, some is even as high as more than 90%, and daily output oil-polluted water amount is very big, and the more oil fields dirts of 5t will be produced by often producing 1t crude oil
Water.The t of Crude Oil in China yield 2.0 hundred million in 2013 is calculated, year water injection rate be up to 1,200,000,000 t, and annual about more than 2% increases, it is seen that oil
Field flood pattern engineering water consumption is big.The Produced Liquid temperature of steam soak and steam flooding well is up to 80 DEG C, and SAGD wells are adopted
Go out liquid temperature degree and be then up to more than 140 DEG C, rich in substantial amounts of middle high-quality residual heat resources, if the high temperature sewage isolated through multi-purpose station
Directly discharged without processing, not only result in the pollution at soil, water source, or even sump oil firing accident can be caused, serious threat life
Life and property safety, simultaneously because sewage temperature is higher, directly discharge can waste substantial amounts of heat, produce thermal pollution.
Thus a large amount of oilfield sewages directly discharge, and not only result in environment, ecological pollution problem, also with energy-saving and emission-reduction policy
Run counter to., whereas if being effectively treated simultaneously re-injection to oilfield sewage, it can not only meet in oil extraction process water injection rate day
The requirement that benefit increases, while water resource can also be saved, reduce environmental pollution, recovery waste heat is that economic benefit is brought in oil field, is had
Beneficial to the Green Sustainable in oil field.Therefore, the present invention proposes a kind of new approaches of novel oilfield sewage disposal.
The content of the invention
The present invention is directed to the weak point of traditional process for treating oil field sewage, it is proposed that a kind of new, efficient pre-
The sewage treatment system of oilfield that processing and advanced treating are combined.
Sewage disposal system includes pretreatment system for sewage and advanced treatment system；Pretreatment system includes Gravity Separation
Device, fluid reservoir, feed pump, heat exchanger；Advanced treatment system includes heat exchanger, blender, delivery pump, evaporator, compressor.In advance
Processing system carries out preliminary treatment to oilfield sewage, and oilfield sewage is filtered out to the dirt by pretreatment using gravity separator
Water.Pretreated sewage is heated by high temperature and high pressure steam and steam condensate respectively, and caused concentrate returns after by thermal evaporation
Continue to separate to knockout drum, the condensate after heat exchange enters boiler as boiler replenishing water.
Pretreatment system carries out preliminary treatment to oilfield sewage, and oilfield sewage is divided into lower floor using gravity separator (1)
Water and silt and the oil on upper strata, oil from left side collect, silt from lower floor discharge, water from right side enter fluid reservoir (2) it is standby.
Before sewage enters advanced treatment system, by sewage, by a heat exchanger, 1. (4) are preheated, and heat medium
For the high-temperature produced liquid produced from oil well.
By heat exchanger, 2. 3. (5), heat exchanger enter evaporator to sewage after (6) preheat respectively in advanced treatment system
(9) pipe side, is heated by the high temperature and high pressure steam of shell-side, and sewage remaining concentrate after heating evaporation falls water vapour in pipe side enters
Enter heat exchanger 2. sewage of (5) heating by pretreatment, the condensate that the water vapour of shell-side is condensed into enter heat exchanger 3. (6) plus
Sewage of the heat by pretreatment, the condensate after heat exchange enter boiler as boiler replenishing water.
It is combined by two processes of sewage disinfection treatment and advanced treating, using the waste heat of high-temperature produced liquid, realizes oil
The efficient process of field sewage, and advanced treatment system realizes internal system heat exchange, with conventional oil field sewage disposal system
System is compared, and is saved outside power consumption, is improved economy.
Brief description of the drawings
Accompanying drawing is the principle schematic of new sewage treatment system of oilfield；Each component names are as follows：
1-gravity separator, 2-fluid reservoir, 3-feed pump, 4-heat exchanger 1., 5-heat exchanger 2., 6-heat exchanger
3., 7-blender, 8-delivery pump, 9-evaporator, 10-compressor, 11-boiler, 12-oil extraction system, pretreatment system
System -001, advanced treatment system -002.
Wherein, pretreatment system 001 is by gravity separator (1), fluid reservoir (2), feed pump (3), heat exchanger 1. (4) group
Into；Advanced treatment system 002 by heat exchanger 2. (5), heat exchanger 3. (6), blender (7), delivery pump (8), evaporator (9), pressure
Contracting machine (10) forms.
Embodiment
A kind of new and effective sewage disposal system includes pretreatment system and advanced treatment system.Come below in conjunction with the accompanying drawings
The present invention is described in detail：
Concrete technology flow process is：The sewage separated from gravity separator (1) enters fluid reservoir (2), in fluid reservoir (2)
Sewage by feed pump (3) enter heat exchanger 1. (4), sewage is preheated in heat exchanger 1. (4) by high-temperature produced liquid, above mistake
Journey is preprocessing process.Advanced treatment system is that the sewage by preheating is divided into two-way：Enter heat exchanger 2. (5) all the way, sewage
It is heated again in heat exchanger 2. (5), heating medium is the heated remaining after evaporation of sewage from the discharge of evaporator (9) bottom
Concentrate；3. (6) another way then enters heat exchanger, heating medium is the condensate after steam condenses in evaporator.Sewage passes through
After crossing the heating of two heat exchangers, temperature rise, converge in blender (7) with carrying out the circulation fluid of flash-pot (9), then by
Delivery pump (8) is sent into evaporator (9).In evaporator (9), sewage is first heated to the saturation under corresponding salt content in tube side
Temperature, then proceed to, by thermal evaporation, the sewage salt content increase of remaining after evaporation, as concentrate discharge evaporator (9), enter
Heat exchanger is 2. (5).Steam caused by sewage evaporation then enters compressor (10), and the steaming of HTHP is compressed into by compressor (10)
Enter the shell side of evaporator (9) after vapour, the sewage as heating medium heating tube side.Steam is condensed into condensate, from evaporation
Device (9) is discharged into heat exchanger, and 3. (6) preheating sewage, the condensate after being exchanged heat in heat exchanger 3. (6) enter as boiler replenishing water
Enter boiler (11), be heated into the steam of HTHP in the boiler, oil extraction system (12) injection well is transported to by surface line
Under.
Claims (4)
1. the present invention provides a kind of new and effective sewage treatment system of oilfield, it is characterized in that：Sewage disposal system includes sewage
Pretreatment system and advanced treatment system；Pretreatment system includes gravity separator, fluid reservoir, feed pump, heat exchanger；Depth
Reason system includes heat exchanger, blender, delivery pump, evaporator, compressor.Pretreatment system is tentatively located to oilfield sewage
Reason, oilfield sewage is filtered out to the sewage by pretreatment using gravity separator.Pretreated sewage is respectively by high temperature height
Steam and steam condensate heating are pressed, caused concentrate returns to knockout drum and continues to separate after by thermal evaporation, the condensation after heat exchange
Water enters boiler as boiler replenishing water.
2. the present invention provides a kind of new and effective sewage treatment system of oilfield, it is characterized in that：Pretreatment system is to oilfield sewage
Preliminary treatment is carried out, oilfield sewage is divided into the water and silt and the oil on upper strata of lower floor using gravity separator (1), it is oily from a left side
Side is collected, and silt is discharged from lower floor, and water is standby from right side into fluid reservoir (2).
3. the present invention provides a kind of new and effective sewage treatment system of oilfield, it is characterized in that：Enter advanced treating system in sewage
Before system, by sewage, by a heat exchanger, 1. (4) are preheated, and heating medium is the high-temperature produced liquid produced from oil well.
4. the present invention provides a kind of new and effective sewage treatment system of oilfield, it is characterized in that：Sewage is in advanced treatment system
By heat exchanger, 2. 3. (5), heat exchanger enter evaporator (9) pipe side after (6) preheat respectively, are added by the high temperature and high pressure steam of shell-side
Heat, sewage remaining concentrate after heating evaporation falls water vapour in pipe side enters heat exchanger, and 2. pretreatment is passed through in (5) heating
Sewage, the condensate that the water vapour of shell-side is condensed into enters heat exchanger 3. sewage of (6) heating by pretreatment, solidifying after heat exchange
Bear water and enter boiler as boiler replenishing water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610388068.0A CN107459191B (en) | 2016-06-02 | 2016-06-02 | Efficient oil field sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610388068.0A CN107459191B (en) | 2016-06-02 | 2016-06-02 | Efficient oil field sewage treatment system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107459191A true CN107459191A (en) | 2017-12-12 |
| CN107459191B CN107459191B (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610388068.0A Active CN107459191B (en) | 2016-06-02 | 2016-06-02 | Efficient oil field sewage treatment system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107459191B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862437A (en) * | 2018-07-24 | 2018-11-23 | 中石化石油工程技术服务有限公司 | A kind of vertical tube falling evaporation recycling treatment process of oilfield sewage |
| CN110306969A (en) * | 2019-06-18 | 2019-10-08 | 浙江陆博环境设备有限公司 | The water-oil separating of oil field oil extraction transportation station and waste water are concentrated by evaporation heat pump system device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708914A (en) * | 2009-11-17 | 2010-05-19 | 辽河石油勘探局 | Technology for treating super heavy oil sewage through heat pump evaporation method |
| CN102351361A (en) * | 2011-07-07 | 2012-02-15 | 大连理工大学 | Device and technology capable of combining high-salt content oil field sewage treatment and viscous oil recovery |
| CN202747688U (en) * | 2012-06-15 | 2013-02-20 | 成都昊地科技有限责任公司 | Oil extraction sewage afterheat comprehensive utilization device for oil fields |
| CN203640707U (en) * | 2013-12-06 | 2014-06-11 | 中国石油化工股份有限公司 | Device for manufacturing high-dryness steam for steam flooding from oil-produced wastewater |
-
2016
- 2016-06-02 CN CN201610388068.0A patent/CN107459191B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708914A (en) * | 2009-11-17 | 2010-05-19 | 辽河石油勘探局 | Technology for treating super heavy oil sewage through heat pump evaporation method |
| CN102351361A (en) * | 2011-07-07 | 2012-02-15 | 大连理工大学 | Device and technology capable of combining high-salt content oil field sewage treatment and viscous oil recovery |
| CN202747688U (en) * | 2012-06-15 | 2013-02-20 | 成都昊地科技有限责任公司 | Oil extraction sewage afterheat comprehensive utilization device for oil fields |
| CN203640707U (en) * | 2013-12-06 | 2014-06-11 | 中国石油化工股份有限公司 | Device for manufacturing high-dryness steam for steam flooding from oil-produced wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 杨贵模等: "蒸汽在稠油油田产出水处理中的应用", 《国外油田工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862437A (en) * | 2018-07-24 | 2018-11-23 | 中石化石油工程技术服务有限公司 | A kind of vertical tube falling evaporation recycling treatment process of oilfield sewage |
| CN110306969A (en) * | 2019-06-18 | 2019-10-08 | 浙江陆博环境设备有限公司 | The water-oil separating of oil field oil extraction transportation station and waste water are concentrated by evaporation heat pump system device |
| CN110306969B (en) * | 2019-06-18 | 2024-02-27 | 浙江陆博环境设备有限公司 | Oil-water separation and wastewater evaporation concentration heat pump system device of oil field oil extraction gathering and transportation station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107459191B (en) | 2022-03-11 |
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