CN202785887U - Three-compound combination flooding oily sewage treatment device - Google Patents
Three-compound combination flooding oily sewage treatment device Download PDFInfo
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- CN202785887U CN202785887U CN201220426521.XU CN201220426521U CN202785887U CN 202785887 U CN202785887 U CN 202785887U CN 201220426521 U CN201220426521 U CN 201220426521U CN 202785887 U CN202785887 U CN 202785887U
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Abstract
The utility model relates to the technical field of oily sewage treatment devices and discloses a three-compound combination flooding oily sewage treatment device. The three-compound combination flooding oily sewage treatment device comprises a pressure coalescent pack horizontal type de-oiler, a static mixer, a compact type air floatation device and a filter which are communicated in sequence through a conveying pipe for oily sewage to flow. The oily sewage is treated with the pressure coalescent pack horizontal type de-oiler, the static mixer, the compact type air floatation device and the filter in sequence; the treated oily sewage can meet the C-level standard of water quality index of fragmental rock oil reservoir water flooding in combination with chemical agents such as a de-oiling agent, a coagulating agent, a coagulant aid and an air floatation agent and the like by utilizing the means of conglomeration and settlement, rotational flow and air floatation, and filteration and the like; the problems of excessively long sewage retention time, complicated treatment process, high sludge treatment amount, high required chemical addition amount, incapability of operating under pressure, high investment and the like are solved; and the oil extraction cost can be greatly reduced.
Description
Technical field
The utility model relates to the technical field of oil-contained waste water treatment device, relates in particular to the bearing sewage for ternary combination flooding in oil treatment unit.
Background technology
Along with PetroChina Company Limited., China Petrochemical Industry and CNOOC progressively implement the tertiary oil recovery development plan, namely adopt the ternary composite driving (polymkeric substance+alkali+tensio-active agent) of polymer flooding and in recent years development to carry out the stimulation work measure, all obtain good oil displacement efficiency in oil fields such as Shengli Oil Field, Daqing oil field, Henan Oil Field, greatly improved recovery ratio.But the participation of polymer flooding and ternary composite driving has brought problem also for the processing of follow-up oil, gas, water.Produced Liquid behind the notes ternary composite driving is a kind of profit system of complexity, Produced Liquid than filled drive is difficult to process more, its Produced Liquid viscosity is large, emulsification is serious, and profit is difficult to separate by natural subsidence, and there is following defective in the oily water treatment aspect of annotating the Produced Liquid of ternary composite driving:
1), the oily(waste)water of extraction contains polymkeric substance, so that oily(waste)water viscosity is multiplied; As adopting filled drive, the viscosity of the oily(waste)water of its extraction is generally 0.6mPa.S, and when annotating ternary composite driving, the oily(waste)water of its extraction increases along with the increase of polymer content, usually increases more than 4 ~ 6 times;
2), the oil droplet size in the oily(waste)water of extraction diminishes, and by the test of oil droplet size, finds oil droplet size in the oily(waste)water of ternary composite driving extraction less than 10 microns account for more than 90%, the oil droplet size intermediate value is generally 3 ~ 6 microns;
3), polymkeric substance is that water-oil interface film toughness in the oily(waste)water strengthens, interfacial charge strengthens, and causes stable the existing in the water body of little oil droplet in the oily(waste)water of extraction;
4), because the existence of tensio-active agent, after the oily(waste)water of extraction was subjected to the shearing action of the mechanical means such as pump, easily further emulsification descended so that aggregate into the ability of larger oil droplet between the little oil droplet;
5), because the existence of polymkeric substance, severe jamming the result of use of flocculation agent, weaken the effect of flocculation agent, like this, then need greatly to have increased the consumption of medicament.
6), the general effect variation of oily water treatment, the water quality after the processing does not reach water quality standard, oil-contg, suspended solids content severe overweight, corresponding corrosion in water rate, bacterium exceed standard seriously.
In sum, because after annotating ternary composite driving, the oily(waste)water of extraction is affected by polymkeric substance etc., and sewage disposal investment and processing cost are increased, and utilizes conventional treatment process, then need increase equipment, strengthen the residence time, cause that complex process, investment are multiplied, pharmacy variety and quantity increase and the problems such as sewage disposal expense increase, and produce a large amount of mud, regularly spoil disposal, workload and the difficulty of management like this, have just greatly been increased.
At present, technical process and the equipment for the produced water disposal of ternary composite driving mainly contains following several:
1), GQF efficient air-floating+filtration
Adopt GQF efficient air-floating+filtration process, i.e. sedimentation oil removing---GQF efficient air-floating---is filtered, and the efficient total head air-dissolving air-float of GQF technology adopts vortex mixer and gas-liquid reactor as molten gas generation; Filtration process then adopts pressure filter tank, and air water associating backwash is adopted in backwash.The characteristics that this oil-contained waste water treatment device is processed are that bubble diameter is little, number of bubbles is many, have the advantages such as deoiling effect is good; Defective is that device volume is large, and the time that sewage stops in device is long, and the air supporting working pressure is normal pressure, can't be with press operation etc.
2), DNF air supporting+filtration process
Adopt the DNF Air-float separator, utilize the characteristic of water different solubility under different pressures, the water after the partially disposed is pressurizeed and aerating, increase the gas dissolving amount of water, add coagulating agent, coagulant aids and molten gas bubble, and under normal pressure, discharge, form air supporting.The principal feature of this oil-contained waste water treatment device is: before the DNF Air-float separator mixing reactor is set, adds medicament (coagulating agent and coagulant aids) in mixing reactor, the ripple swash plate is set in the DNF Air-float separator, increase oily water separation efficient; Its weak point is: the overlong time that oily(waste)water stops in device, and can only under normal pressure, operate, chemical feeding quantity is larger, and the sludge quantity of generation also increases thereupon, has increased the burden of sludge system.
3), OPS+CoMag technical matters
OPS(Oil Physical Process System) be a kind of system that adopts the comprehensive physical deoiling method, principal feature is to adopt physical motion to gather breakdown of emulsion and the assorted principle of the machine of removing, and it adopts sine bellows filler and Air-float separator; CoMag magnetic iron powder equipment adopts and adds flocculation agent, polymkeric substance and super-fine magnetic powder, form the chimeric flocs unit of highdensity magnetic, after carrying out the oily(waste)water separation, employing high-density magnetic removes by filter the suspended substance in the oily(waste)water, and mud then reclaims by the magnetic drum separator and reuses.The principal feature of this oil-contained waste water treatment device is to adopt OPS efficient air-floating system, adopts the external magnetic of introducing to separate (CoMag) device; Its weak point is: OPS efficient air-floating system deoiling filler is easily stopped up by greasy dirt, causes complex treatment process, and sludge yield is large and oil length is high, and the investment of device is larger.
The utility model content
The purpose of this utility model is to provide the bearing sewage for ternary combination flooding in oil treatment unit, be intended to solve oil-contained waste water treatment device of the prior art and process the oily(waste)water of annotating extraction behind the ternary composite driving, have that dwell time of sewage is long, complex treatment process, sludge yield are large, need chemical feeding quantity large, can not and invest high problem with press operation.
The utility model is to realize like this, the bearing sewage for ternary combination flooding in oil treatment unit, comprise the horizontal oil eliminator of pressure coalescent pack that can add coagulating agent and coagulant aids and oily(waste)water reaction, can add degreaser and the static mixer of flotation agent and oily(waste)water reaction, compact type gas floatation device and the strainer that adopts strong air supporting and weak air-flow treatment process that oily(waste)water is separated, the horizontal oil eliminator of described pressure coalescent pack, static mixer, compact type gas floatation device and strainer sequentially are communicated with by the transfer lime that flows for oily(waste)water.
Further, also comprise the electrolyzer that can carry out to oily(waste)water electrolysis, described electrolyzer places between described compact type gas floatation device and the strainer, and is communicated with respectively described compact type gas floatation device and described strainer by described transfer lime.
Further, the quantity of described compact type gas floatation device is two, is set up in parallel between the horizontal oil eliminator of described pressure coalescent pack and described strainer, and is communicated with by described transfer lime.
Further, described bearing sewage for ternary combination flooding in oil treatment unit also comprises circulating line, and the two ends of described circulating line are connected on the transfer lime of two described compact type gas floatation devices, and is provided with recycle pump in the described circulating line.
Further, described strainer comprises hay tank and is located at the filter bed that is used for filtering oily(waste)water in the described hay tank.
Compared with prior art; at the isolated oily(waste)water of triphase separator sequentially by the horizontal oil eliminator of pressure coalescent pack in the utility model; static mixer; the layer by layer processing of compact type gas floatation device and strainer; adopt coalescent sedimentation; the means such as cyclone air-flotation and filtration; be equipped with degreaser; coagulating agent; the chemical agent such as coagulant aids and gas floatation agent; can be so that the oily(waste)water after processing reaches petroclastic rock reservoir water water-quality guideline C grade standard; the solution dwell time of sewage is long; complex treatment process; mud handling capacity is large; need chemical feeding quantity large; the problems such as press operation and investment height can not be with, cost for oil production can be greatly reduced; protection of the environment and have good economic benefit and social benefit.
Description of drawings
Fig. 1 looks synoptic diagram for the master of the bearing sewage for ternary combination flooding in oil treatment unit that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model provides the bearing sewage for ternary combination flooding in oil treatment unit, comprise the horizontal oil eliminator of pressure coalescent pack that can add coagulating agent and coagulant aids and oily(waste)water reaction, can add degreaser and the static mixer of flotation agent and oily(waste)water reaction, compact type gas floatation device and the strainer that adopts strong air supporting and weak air-flow treatment process that oily(waste)water is separated, the horizontal oil eliminator of described pressure coalescent pack, static mixer, compact type gas floatation device and strainer sequentially are communicated with by the transfer lime that flows for oily(waste)water.
Oil-contained waste water treatment device in the utility model can be so that the oily(waste)water after processing reaches petroclastic rock reservoir water water-quality guideline C grade standard; solve that dwell time of sewage is long, complex treatment process, mud handling capacity are large, need chemical feeding quantity large, can not be with the problems such as press operation and investment be high, can greatly reduce cost for oil production, protection of the environment and have good economic benefit and social benefit.
Below in conjunction with concrete accompanying drawing realization of the present utility model is described in detail.
As shown in Figure 1, a preferred embodiment that provides for the utility model.
The waste disposal plant 1 that present embodiment provides is used for ternary combination flooding produced liquid is processed through the isolated oily(waste)water of triphase separator, namely carries out oily water separation.
Oil-contained waste water treatment device 1 in the present embodiment comprises the horizontal oil eliminator 11 of pressure coalescent pack, static mixer, compact type gas floatation device 12 and strainer 14, and the horizontal oil eliminator 11 of pressure coalescent pack, static mixer, compact type gas floatation device 12 and strainer 14 sequentially are communicated with by transfer lime 15.
Oily(waste)water enters in the container 112 of the horizontal oil eliminator 11 of pressure coalescent pack by water inlet pipe, in container 112, oily(waste)water carries out sedimentation, the time of sedimentation can be controlled in 0.5 ~ 1 hour, and, at container 112 interior adding coagulating agent and coagulant aidss, separate efficiently the suspended substance in the oily(waste)water, oil and water, oily(waste)water carry out initial gross separation in the horizontal oil eliminator 11 of pressure coalescent pack after enters in the static mixer by transfer lime 15, the suspended substance of separating can drain into by the sediment outflow structure 114 of container 112 belows container 112 outsides, and the sump oil of separating can drain into by the oil discharge outlet 111 of container 112 upper ends in the outside oil-drain pipe 16.
The horizontal oil eliminator 11 of above-mentioned pressure coalescent pack comprises the container 112 of horizontal placement, the middle part of container 112 is provided with inlet distribution device 115, above-mentioned water inlet pipe is connected on this inlet distribution device 115, the container 112 interior side by side alternate multilayer coalescent pack plates 113 that are provided with are used for the oily(waste)water that enters in the container 112 is carried out sedimentation; The sediment outflow structure 114 that is arranged on container 112 lower ends is long-pending sand hopper, owing to collect the suspended substance of separating in the oily(waste)water, oil discharge outlet 111 is arranged on the top of container 112, is communicated with outside oil-drain pipe 16.
Be added with the chemical agents such as degreaser and flotation agent in the static mixer, this chemical agent can mix with oily(waste)water and react, and reacted oily(waste)water enters in the compact type gas floatation device 12.
In compact type gas floatation device 12, adopt the combination of strong air supporting and two kinds of effects of weak air-flow, so that the velocity of separation of the oil droplet in the oily(waste)water in it and suspended substance is accelerated, general control action time is again in 5 ~ 10 minutes, like this, the missible oil of come-up can enter in the oil-drain pipe 16 by the oil of the receipts on it cylinder in compact type gas floatation device 12, and then enter in the slop oil tank, the suspended substance of bottom sedimentation and mud is entering in the sludge treating system of intermittence then, and treated oily(waste)water then enters in the strainer 14 by transfer lime 15.
Above-mentioned strainer 14 adopts the fine filtering tank, be provided with the filter bed 141 that oily(waste)water is filtered in this hay tank, this filter bed 141 adopts modified fiber ball or multilayer filtrate to support, in hay tank, adopt the method for air water associating backwash, strengthened the backwash effect and reduced backwash time and backwash water consumption.
In strainer 14, then enter in the water injection tank by water port through the oily(waste)water that filters.
In the present embodiment; pass through successively the horizontal oil eliminator 11 of pressure coalescent pack at the isolated oily(waste)water of triphase separator; static mixer; the layer by layer processing of compact type gas floatation device 12 and strainer 14; sequentially adopt coalescent sedimentation; the means such as cyclone air-flotation and filtration; be equipped with degreaser; coagulating agent; the chemical agent such as coagulant aids and gas floatation agent; can be so that the oily(waste)water after processing reaches petroclastic rock reservoir water water-quality guideline C grade standard; and for the multinomial treatment technology of prior art; it is long that it solves dwell time of sewage; complex treatment process; mud handling capacity is large; need chemical feeding quantity large; the problems such as press operation and investment height can not be with, cost for oil production can be greatly reduced; protection of the environment and have good economic benefit and social benefit.
In order further to improve the treatment effect to oily(waste)water, out oily(waste)water enters before the strainer 14 from compact type gas floatation device 12, oily(waste)water also enters in the electrolyzer 13, that is to say that waste disposal plant 1 also comprises electrolyzer 13, it is arranged between compact type gas floatation device 12 and the strainer 14, and is communicated with compact type gas floatation device 12 and strainer 14 by above-mentioned transfer lime 15 respectively.
After oily(waste)water enters in the electrolyzer 13, electrolyzer in the electrolyzer 13 carries out electrolysis to oily(waste)water, produce oxygen and hydrogen, and, oxygen and hydrogen are overflowed with the smile bubble form, in the process that rises of overflowing, can adhere to granulometric impurity and oil droplets in the water, form the effect of oil removal by air bubbling and air supporting oil removal.In addition, in the process of electrolyzer electrolyzing sewage, also aluminium hydroxide and ironic hydroxide can be generated, like this, the effect of adsorption-condensation can be played to the colloid in the oily(waste)water and suspended substance.
In order further oily(waste)water to be processed, above-mentioned compact type gas floatation device 12 is provided with two, two compact type gas floatation devices 12 are set up in parallel, like this, the oily(waste)water of horizontal oil eliminator 11 preliminary treatments of process pressure coalescent pack is introduced in the compact type gas floatation device 12 to be processed, enter in another compact type gas floatation device 12 again and process, like this, namely two compact type gas floatation devices 12 are processed oily(waste)water successively.
Certainly, for so that oily(waste)water can in two compact type gas floatation devices 12, circulate, waste disposal plant 1 also includes circulating line 17, the two ends of this circulating line 17 are connected on the transfer lime 15 of two compact type gas floatation devices 12, and also be provided with recycle pump 18 in the circulating line 17, be used for extracting oily(waste)water two compact type gas floatation device 12 circular treatment.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. bearing sewage for ternary combination flooding in oil treatment unit, it is characterized in that, comprise the horizontal oil eliminator of pressure coalescent pack that can add coagulating agent and coagulant aids and oily(waste)water reaction, can add degreaser and the static mixer of flotation agent and oily(waste)water reaction, compact type gas floatation device and the strainer that adopts strong air supporting and weak air-flow treatment process that oily(waste)water is separated, the horizontal oil eliminator of described pressure coalescent pack, static mixer, compact type gas floatation device and strainer sequentially are communicated with by the transfer lime that flows for oily(waste)water.
2. bearing sewage for ternary combination flooding in oil treatment unit as claimed in claim 1, it is characterized in that, also comprise the electrolyzer that can carry out to oily(waste)water electrolysis, described electrolyzer places between described compact type gas floatation device and the strainer, and is communicated with respectively described compact type gas floatation device and described strainer by described transfer lime.
3. bearing sewage for ternary combination flooding in oil treatment unit as claimed in claim 1 or 2, it is characterized in that, the quantity of described compact type gas floatation device is two, is set up in parallel between the horizontal oil eliminator of described pressure coalescent pack and described strainer, and is communicated with by described transfer lime.
4. bearing sewage for ternary combination flooding in oil treatment unit as claimed in claim 3, it is characterized in that, described bearing sewage for ternary combination flooding in oil treatment unit also comprises circulating line, the two ends of described circulating line are connected on the transfer lime of two described compact type gas floatation devices, and are provided with recycle pump in the described circulating line.
5. bearing sewage for ternary combination flooding in oil treatment unit as claimed in claim 3 is characterized in that, described strainer comprises hay tank and is located at the filter bed that is used for filtering oily(waste)water in the described hay tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220426521.XU CN202785887U (en) | 2012-08-24 | 2012-08-24 | Three-compound combination flooding oily sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220426521.XU CN202785887U (en) | 2012-08-24 | 2012-08-24 | Three-compound combination flooding oily sewage treatment device |
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| CN202785887U true CN202785887U (en) | 2013-03-13 |
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| CN201220426521.XU Expired - Lifetime CN202785887U (en) | 2012-08-24 | 2012-08-24 | Three-compound combination flooding oily sewage treatment device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086026A (en) * | 2014-07-08 | 2014-10-08 | 王宝辉 | Efficient innocent treatment device and efficient innocent treatment method for oil-gas field fracturing wastewater |
| CN105314796A (en) * | 2015-11-16 | 2016-02-10 | 克拉玛依市弘峰科技有限公司 | Oil field high-salinity and oil-bearing wastewater treatment technology |
| CN109678275A (en) * | 2019-01-15 | 2019-04-26 | 中国石油天然气集团公司 | Gas production wellhead recovered water water transfer type handles re-injection device and method |
| CN114477559A (en) * | 2022-03-03 | 2022-05-13 | 刘建恒 | Advanced treatment process for treating high-concentration polymer flooding oily sewage of oil field |
| CN115925204A (en) * | 2023-02-14 | 2023-04-07 | 珠海巨涛海洋石油服务有限公司 | Offshore oilfield production water on-site treatment and on-site reinjection system and process |
-
2012
- 2012-08-24 CN CN201220426521.XU patent/CN202785887U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086026A (en) * | 2014-07-08 | 2014-10-08 | 王宝辉 | Efficient innocent treatment device and efficient innocent treatment method for oil-gas field fracturing wastewater |
| CN105314796A (en) * | 2015-11-16 | 2016-02-10 | 克拉玛依市弘峰科技有限公司 | Oil field high-salinity and oil-bearing wastewater treatment technology |
| CN109678275A (en) * | 2019-01-15 | 2019-04-26 | 中国石油天然气集团公司 | Gas production wellhead recovered water water transfer type handles re-injection device and method |
| CN114477559A (en) * | 2022-03-03 | 2022-05-13 | 刘建恒 | Advanced treatment process for treating high-concentration polymer flooding oily sewage of oil field |
| CN114477559B (en) * | 2022-03-03 | 2023-02-03 | 刘建恒 | Advanced treatment process for treating high-concentration polymer flooding oily sewage of oil field |
| CN115925204A (en) * | 2023-02-14 | 2023-04-07 | 珠海巨涛海洋石油服务有限公司 | Offshore oilfield production water on-site treatment and on-site reinjection system and process |
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