CN103754986B - A kind of Oil stain mixture separation system - Google Patents

A kind of Oil stain mixture separation system Download PDF

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CN103754986B
CN103754986B CN201410033548.6A CN201410033548A CN103754986B CN 103754986 B CN103754986 B CN 103754986B CN 201410033548 A CN201410033548 A CN 201410033548A CN 103754986 B CN103754986 B CN 103754986B
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water
oil
spiral slot
mixed solution
separation
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CN103754986A (en
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高迎新
耿麒翔
焦思明
陈宏�
杨敏
张国林
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Research Center for Eco Environmental Sciences of CAS
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Research Center for Eco Environmental Sciences of CAS
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Abstract

A kind of Oil stain mixture separation system is provided, its main body is the separator main body (114) of roughly cylindrical tube shape, and major parts comprises spiral slot cylindrical shell (104), spiral slot (108), mixed solution entry portal (110), water shoot (113), particulate matter settlement plate (111) and separator main body (114); Separator main body (114) inner side is provided with spiral slot cylindrical shell (104), is close to spiral slot cylindrical shell (104) inwall and spiral slot (108) is installed; Separator main body (114) bottom is provided with entry to mixed solution (109), and the mixed solution of entry to mixed solution (109) enters flow velocity at more than 2m/s.Use Oil stain mixture separation system of the present invention can control the ratio of oily water separation, and have wide range of applications.

Description

A kind of Oil stain mixture separation system
Technical field
The invention belongs to material physical sepn field, be specifically related to a kind of Oil stain mixture separation system, it is applicable to the Oil stain mixture separation system in the large petroleum chemical industry for the treatment of capacity.
Background technology
Along with the development of economic society, contaminated wastewater grows with each passing day, and environmental pollution is more and more subject to the attention of the people, and oily(waste)water is common in numerous waste water, be easy to the industrial and life contaminated water bringing environmental pollution, harm is serious, and its process at home and abroad all attracts great attention.All oily(waste)water can be produced at present in the processes such as oil production, refining of petroleum, petrochemical complex, vehicle cleaning, machinofacture, food-processing.Oil pollutant diffuses to form oil film at the water surface at once once enter water body, stops water body reoxygenation from air.Oils migration circle is wide, degradation speed slow, finally affects human health.Different with the existence form of oils in water according to the source of oily(waste)water, can be divided into: the large class of oil slick, dispersed oil, oil in water emulsion and dissolving oil four.These oil component are complicated, and containing a large amount of mineral oil or vegetables oil, emulsifying agent and other organism, emulsification degree is high, stable in properties, removal difficulty are large.Therefore, how efficiently to carry out oily water separation and be still a difficult problem to reach emission standard.
The method of process oily(waste)water conventional at present has gravitational separation process, centrifugal separation, By Bubble-floating Method, ultrafiltration process, filtration method, absorption method etc.Each facture has oneself relative merits.Gravitational separation process and centrifugal separation can only oil slick in Separation of Water and the larger dispersed oils of a small amount of particle diameter, and the oil base for dispersion, emulsification, dissolving does not originally have removal effect, therefore usually used as the pretreatment unit of oily(waste)water.By Bubble-floating Method is the action principle according to buoyancy, sticks on a large amount of microbubbles by the oil droplet of oil in water emulsion and dispersed oil, and bubble takes oil droplet out of the water surface, to realize solid-liquid separation process due to the buoyancy of self.In actual applications, because waste water quality is different, consider treatment effect and the factor such as capital construction, working cost, selected air-float technology is also different.More commonly vacuum dissolved air flotation and method of pressed dissolved-air release, the former uses seldom at present by various factors restriction, and the latter is the By Bubble-floating Method the most often adopted.General and the coagulation technology of By Bubble-floating Method combines, and can remove most of dispersed oil in water, also have certain clearance to the oil of emulsification and dissolving, is therefore the maximum oily wastewater treatment method of employing.But existing traditional By Bubble-floating Method process oily(waste)water exists several large shortcoming: oil slick is difficult, flotation time stops longer; Mud is easily deposited at the bottom of air flotation pool, reliever frequent jams; When treatment capacity is large, airfloat equipment floor space is large, and investment cost is high; Whole Equipment is imperfect, installs loaded down with trivial details; To based on the oily(waste)water of oil in water emulsion and dissolving oil, traditional pneumatically supported removal effect is not good.
Ultrafiltration process was mainly used in condensed emulsified mineral oil in the last few years.Although ultra-filtration technique under certain condition can effective oil-water separation, the fouling membrane produced in concentration process can cause membrane flux deep fades, and transmembrane pressure significantly rises, and membrane lifetime shortens, membrane sepn decrease in efficiency, and energy consumption increases.Major part ultra-filtration membrane just enters the frequent cleaning phase after running half a year, not only consumes a large amount of clean-out system, and produces the secondary pollution problem of oil-containing scavenging solution.Seldom there is the work-ing life of ultra-filtration membrane can more than 2 years.Because the investment of film is usually comparatively large, the initial investment of ultrafiltration oil removing system and running cost are all very high.In addition ultrafiltration is extremely low to the tolerance of oil slick, once because pre-treatment is not good at, is concentrated the reason generation oil slick such as precipitation in system, can bring irreversible destruction to ultra-filtration membrane.
Filtration and absorption method mainly carry out the oil of trace in planar water with special filtrate (nut-shell, oil suction plastics) etc.This method is only applicable to the situation that in waste water, oleaginousness is very low, otherwise filtrate can be caused saturated very soon.To clean frequently and regeneration can cause the physical abuse of filtrate, and can lose efficacy gradually owing to being difficult to thorough backwash filtrate, need often to supplement, working cost is higher.And the removal effect of the method is not good when oil droplet emulsification.Egg Shape Plate Separator disclosed in Chinese patent CN201342267Y is achieved in that and comprises separation vessel and dividing plate, side, separation vessel top arranges water pump, separation vessel top arranges cover plate, cover plate is provided with water-in, container bottom sets out water pipe, separation vessel is divided into oil, separate tank and pond by the water-stop sheet arranged bottom separation vessel, oil separating plate and strongback successively, and oil sump top sets out oil pipe; Connected entrance is left bottom oil separating plate lower end and separate tank; Be provided with air supporting pipe bottom separate tank, air supporting pipe connects Airfloat pump.This tripping device is only applicable to the smaller oily(waste)water of the water yield, and treatment scheme is longer, and wastewater flow and operation can not well control.
The oil field reinjection water embrane method process of Chinese patent CN102225812A, its basic procedure comprises: oily(waste)water enters slurry tank sedimentation, the suspended solids that remove portion is large and oil slick, water after sedimentation enters ceramic membrane ultrafitration equipment, at ceramic membrane device interior circulating filtration, the direct re-injection of penetrating fluid through film, not through continuation settling circulation filter.Although this technique is simple, filtering accuracy is high, and after running for some time, wet goods dirt can block film pipe, causes membrane flux significantly to be decayed, and not easily reaches the result of oily water separation smoothly.
Based on the widespread use of cyclone separation process in oiliness sewage treatment, recent a lot of water treatment manufacturer all proposes the viewpoint traditional air supporting and cyclone technique combined, and achieves some achievements in research.
Set forth a kind of oil, gas, water three-phase separating device in US Patent No. 7157007, this device is a vertical-type air-flotation separating tank, is mainly divided into upper, middle and lower-ranking, make use of cyclonic separation, coarse and air supporting isolation technique respectively.The mid-way being positioned at tank top is provided with an inner core, and oily(waste)water enters into inner core from tangential inlet and produces eddy flow, in inner core, carry out oily water separation, and oil phase directly enters oil skimming bucket.The coalescing layer of the current flowed out bottom inner core through being positioned in the middle part of tank, the oil droplet of dispersion is at this agglomeration.Part macrobead oil droplet can under buoyancy, overcomes self gravitation and the lower of main body phase starts upwards buoyance lift to flowing, from and eliminate part oil.In tank bottom, injector is installed, utilizes the gas of tank inner top and back-flow scrubbing water in injector after shear-mixed, produce micro-bubble, air-flotation process is carried out to the oily(waste)water flow down from coalescing layer.But the periodic cleaning problem of coalescing layer bothers very much, the internal structure of whole plant is very complicated simultaneously, and the cost of processing and manufacturing is higher.
Set forth a kind of combined degassing and flotation tank in US Patent No. 7144503, have a cylindric inner core and a spiral entrance guide card in tank, oily(waste)water enters tank from the tangential inlet on tank top and forms eddy flow, and bubble is separated out from water simultaneously.Bubble and oil droplet are depressed into inner tube wall under the effect of eddy flow, and the two rises to tank deck after combining and adhering to, and is discharged by the oil gas vent of tank deck.According to patentee's, the treatment effect of this device to oily(waste)water is better, and cost and maintenance cost are very low, compare the oil production platforms that is applicable to offshore operation or Floating Production storage and unload the stricter field of the space requirements such as oil tanker (FPSO) and use.But from the structure iron appended by this patent, the outer row of the oil and bubble scum silica frost that rise to tank inner top also exists some problems.Especially the oil production platforms of offshore operation or FPSO can be in vibrating state because of the effect of ripple, wave, stream, now the liquid level of tank inside is difficult to keep stable, thus cause the water content in the outer oil extraction of this device and bubble scum silica frost too high, thus have a strong impact on separating effect.
From above-mentioned, current existing treatment technology is difficult to obtain good treatment effect to oily(waste)water, and particularly when the component of oily(waste)water becomes increasingly complex, intractability is increasing.
Summary of the invention
In order to solve the problem, the present inventor for for above-mentioned the deficiencies in the prior art, through repeatedly design and researchp, proposes a kind of Oil stain mixture separation system.
According to technical scheme of the present invention, a kind of Oil stain mixture separation system main body provided is the separator main body 114 of roughly cylindrical tube shape, and major parts comprises spiral slot cylindrical shell 104, spiral slot 108, mixed solution entry portal 110, water shoot 113, particulate matter settlement plate 111 and separator main body 114; Inside separator main body 114, be provided with spiral slot cylindrical shell 104, be close to spiral slot cylindrical shell 104 inwall and spiral slot 108 is installed; Separator main body 114 bottom is provided with entry to mixed solution 109, and the mixed solution of entry to mixed solution 109 enters flow velocity at more than 2m/s.
Preferably, spiral slot cylindrical shell 104 is for cyclonic separation, the oil-water mixture entered from entry to mixed solution 109 jet flows in groove along spiral slot 108, and the heavier material of proportion is adjacent to cell wall to upper reaches, and the lighter material of proportion gradually eddy flow is waited a moment to spiral slot cylindrical shell 104 mid-way slow floating.
More preferably, spiral slot 108 is fixed on spiral slot cylindrical shell 104 for entity structure, and the installation pitch H of spiral slot 108 is 75mm, groove depth 60mm;
Preferably, the proportionlity 1: 1: 1.25 of groove depth, pitch and entry to mixed solution diameter, i.e. groove depth: pitch: inlet diameter (entry to mixed solution 109 diameter)=1: 1: 1.25.
Preferably, Oil stain mixture separation system also comprises water port 101, draining regulated valve 102, separator fluid accumulation area 103, oil extraction regulated valve 105, water port 101, its for the treatment of after water discharge from this water port 101; Draining regulated valve 102, it is for adjusting water outlet height and Water discharge flow speed, coordinates water inlet to regulate and uses; Separator fluid accumulation area 103, the fluid that rotating separation goes out floats to region clustering herein and treats outer row; Oil extraction regulated valve 105, it is for by regulating fuel-displaced flow to control fuel-displaced water ratio, when oil mass is lower, closes oil extraction regulated valve 105, when oil mass is higher, then opens oil extraction regulated valve 105.
Further, Oil stain mixture separation system also comprises oil discharge outlet 106, and moisture lower fluid is discharged from here; The isolated water of major part flows to below separator main body from flowing water district 107 (gap).The water flow to below separator main body from flowing water district 107 (gap) is discharged from water port 101 by water shoot 113.
Further, the mouth of pipe of mixed solution entry portal 110 is tangentially contact with spiral slot 108.
Use Oil stain mixture separation system of the present invention can control the ratio of oily water separation, namely control the water content in separating oil well, there is unrivaled oil-water separation in prior art.And the separation gone for containing the material such as greasy dirt, sandstone, namely have wide range of applications.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram according to Oil stain mixture separation system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Additionally, protection scope of the present invention only should be limited to following concrete structure or parts or design parameter.
Oil stain mixture separation system of the present invention, be applicable to come from the mixture separation being mixed with water, landing oil and ground silt particle, described mixture is referred to as oil-water mixture.
Oil stain mixture separation system as shown in Figure 1, its main body is the separator main body 114 of roughly cylindrical tube shape, and major parts comprises spiral slot cylindrical shell 104, spiral slot 108, mixed solution entry portal 110, water shoot 113, particulate matter settlement plate 111 and separator main body 114.Inside separator main body 114, be provided with spiral slot cylindrical shell 104, depend on spiral slot cylindrical shell 104 inwall and spiral slot 108 is installed; Separator main body 114 bottom is provided with entry to mixed solution 109, mixed solution herein enters flow velocity at more than 2m/s, to ensure the cyclonic separation effect of current in spiral slot 108 (temperature of mixed solution remains on more than normal temperature, preferred more than 20 degrees Celsius further).
In addition, spiral slot cylindrical shell 104 is for cyclonic separation, the oil-water mixture entered from entry to mixed solution 109 jet flows in groove along spiral slot 108, and the heavier material of proportion is adjacent to cell wall to upper reaches, and the lighter material of proportion gradually eddy flow is waited a moment to spiral slot cylindrical shell 104 mid-way slow floating.Spiral slot 108 is fixed on spiral slot cylindrical shell 104 for entity structure, and the installation pitch H of spiral slot 108 is 75mm, groove depth 60mm; In a preferred embodiment, the proportionlity 1: 1: 1.25 of groove depth, pitch and entry to mixed solution diameter, i.e. groove depth: pitch: inlet diameter (entry to mixed solution 109 diameter)=1: 1: 1.25, now eddy flow effect is best.
Oil stain mixture separation system as shown in Figure 1 also comprises with lower component: water port 101, its for the treatment of after water discharge from this water port 101; Draining regulated valve 102, it is for adjusting water outlet height and Water discharge flow speed, coordinates water inlet to regulate and uses; Separator fluid accumulation area 103, the fluid that rotating separation goes out floats to region clustering herein and treats outer row; Oil extraction regulated valve 105, it is for by regulating fuel-displaced flow to control fuel-displaced water ratio, when oil mass is lower, closes oil extraction regulated valve 105, when oil mass is higher, then opens oil extraction regulated valve 105; Oil discharge outlet 106, moisture lower fluid is discharged from here; The isolated water of major part flows to below separator main body from flowing water district 107 (gap).The water flow to below separator main body from flowing water district 107 (gap) is discharged from water port 101 by water shoot 113.
Preferably, the mouth of pipe of mixed solution entry portal 110, makes to be all that jet is cut and can normally be rotated in spiral slot for the follow-up liquid entered lays the first stone in tangentially contacting with spiral slot 108.If have the particulate matter such as bulk matter such as sand or stone can be deposited on plate in the mixed solution that particulate matter settlement plate 111 jet enters, the regular vent valves opening particulate matter relief outlet 112 is discharged.(particulate matter relief outlet 112 is for being deposited to the particulate matter from then on mouth discharge on particulate matter settlement plate.Regular discharge or each use terminate rear discharge).
Separator main body 114 adopts wall thickness to be the tank body of 5mm in the present invention, and main material is 304 (stainless steel models) of high-quality.
Use Oil stain mixture separation system of the present invention, oil-water mixture enters in separator main body by high-pressure pump through entry to mixed solution 109, be ejected in spiral slot 108 from mixed solution jet orifice 110, by the rotation along spiral slot 108, wherein by the material eddy flow of lightweight to spiral slot cylindrical shell 104 mid-way and constantly float to separator fluid accumulation area 103 place, then discharged by oil discharge outlet 106.The larger water of proportion, then all the time near the marginal position of spiral slot cylindrical shell, after eddy flow to spiral slot cylindrical shell top, flows to bottom by water shoot 113 through water port 101 device for transferring from flowing water district 107.Wherein draining regulated valve 102 can adjust the speed of water outlet and the discharge height of fluid, and wherein oil extraction regulated valve 105 can regulate fuel-displaced water ratio.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.This area those skilled in the art are appreciated that when not deviating from the spirit and scope of the present invention of claims definition, can make various amendment in form and details.

Claims (5)

1. an Oil stain mixture separation system, its main body is the separator main body (114) of roughly cylindrical tube shape, and major parts comprises spiral slot cylindrical shell (104), spiral slot (108), mixed solution entry portal (110), water shoot (113), particulate matter settlement plate (111) and separator main body (114); Separator main body (114) inner side is provided with spiral slot cylindrical shell (104), is close to spiral slot cylindrical shell (104) inwall and spiral slot (108) is installed; Separator main body (114) bottom is provided with entry to mixed solution (109), and the mixed solution of entry to mixed solution (109) enters flow velocity at more than 2m/s;
Oil stain mixture separation system also comprises water port (101), draining regulated valve (102), separator fluid accumulation area (103), oil extraction regulated valve (105), water port (101), its for the treatment of after water discharge from this water port (101); Draining regulated valve (102), it is for adjusting water outlet height and Water discharge flow speed, coordinates water inlet to regulate and uses; Separator fluid accumulation area (103), the fluid that rotating separation goes out floats to region clustering herein and treats outer row; Oil extraction regulated valve (105), it is for by regulating fuel-displaced flow to control fuel-displaced water ratio, when oil mass is lower, closes oil extraction regulated valve (105), when oil mass is higher, then opens oil extraction regulated valve (105).
2. Oil stain mixture separation system according to claim 1, it is characterized in that: spiral slot cylindrical shell (104) is for cyclonic separation, the oil-water mixture entered from entry to mixed solution (109) jet flows in groove along spiral slot (108), the heavier material of proportion is adjacent to cell wall to upper reaches, and the lighter material of proportion gradually eddy flow is waited a moment to spiral slot cylindrical shell (104) mid-way slow floating.
3. Oil stain mixture separation system according to claim 2, it is characterized in that: spiral slot (108) is fixed on spiral slot cylindrical shell (104) for entity structure, and the installation pitch H of spiral slot (108) is 75mm, groove depth 60mm.
4. Oil stain mixture separation system according to claim 1, is characterized in that: Oil stain mixture separation system also comprises oil discharge outlet (106), and moisture lower fluid is discharged from here; The isolated water of major part flows to below separator main body from flowing water district (107) (gap); The water flow to below separator main body from flowing water district (107) (gap) is discharged from water port (101) by water shoot (113).
5. according to arbitrary described Oil stain mixture separation system of claim 2-4, it is characterized in that: the mouth of pipe and the spiral slot (108) of mixed solution entry portal (110) are tangentially contact.
CN201410033548.6A 2014-01-24 2014-01-24 A kind of Oil stain mixture separation system Active CN103754986B (en)

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CN106110754B (en) * 2016-08-15 2019-04-19 武汉金牛经济发展有限公司 A kind of separation of rainwater greasy dirt and filter device
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CN201746872U (en) * 2010-07-29 2011-02-16 兰州交通大学 Automatic initial roof rainwater drainage and vertical cyclone desanding integrated equipment

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