CN201643790U - Oil-water separator - Google Patents

Oil-water separator Download PDF

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Publication number
CN201643790U
CN201643790U CN2010201603484U CN201020160348U CN201643790U CN 201643790 U CN201643790 U CN 201643790U CN 2010201603484 U CN2010201603484 U CN 2010201603484U CN 201020160348 U CN201020160348 U CN 201020160348U CN 201643790 U CN201643790 U CN 201643790U
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CN
China
Prior art keywords
oil
inner member
water separator
oil phase
water
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Expired - Lifetime
Application number
CN2010201603484U
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Chinese (zh)
Inventor
刘文杰
张宏宇
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China Petroleum and Chemical Corp
Sinopec Shanghai Research Institute of Petrochemical Technology
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China Petroleum and Chemical Corp
Sinopec Shanghai Research Institute of Petrochemical Technology
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Priority to CN2010201603484U priority Critical patent/CN201643790U/en
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Abstract

The utility model relates to an oil-water separator, which mainly solves the problems that the effect of oil-water separation is poor and the equipment investment is large in the prior art. The oil-water separator is a lying type container, wherein a container shell is provided with an inlet pipe, a water phase outlet pipe and an oil phase outlet pipe, and a feeding pre-separation inner component, a constant-current inner component, an emulsion breaking inner component, an oil phase gather inner component and a baffle plate are orderly arranged in the container from the inlet pipe to the oil phase outlet pipe, thereby excellently solving the problems, and being capable of being used in industry production of the oil-water separation.

Description

Oil water separator
Technical field
The utility model relates to a kind of oil water separator.
Background technology
Oil water separator is industrial oil-containing water treatment facility commonly used, and is extensive in sector applications such as chemical industry, oil field, refineries.Oil and water are two immiscible class I liquid Is, it must be separated according to technology or requirement on environmental protection.Water-oil separating method commonly used has gravitational method, centrifugal process, floatation, electricity to take off method and method of chemical treatment etc., wherein gravitational method is the method for widespread usage nowadays, oil water separator is set on the commercial plant usually, utilize the severe difference of oil and water, by the gravitational settling effect, realize the separation of the same heavy phase of light phase (oil phase) (water).
Water-oil separating on the commercial plant is a considerable procedure, and according to production experience, this process had both been abstained from oil mixed with water, also abstains from band oil in the water.Because have excessive water in the oil phase, the purification operations of downstream oil phase will be influenced; And band is oily in the water, then may have a strong impact on the quality of water, makes it and should not recycle, and causes environmental pollution.For this reason, one of operating principle of oil water separator is not have in the oil phase under the prerequisite of excessive water, make to be with oil to be reduced to minimum level in the water.
In order to realize said process, the method that adopts in the industrial production is to guarantee that material has enough time of staying in oil water separator at present, make the fine droplets in the mixed liquor have the time enough coalescence to become bigger drop, thereby has bigger sedimentation (or buoyance lift) speed, therefore, oil water separator must have enough big volume.It is big that but the adverse effect of bringing is exactly an equipment volume, and investment and floor space are also big, and oil-water separation neither be fine simultaneously.
For overcoming the above problems, document 02129209.4 has proposed a kind of high efficiency torrent phase-change oil water separating method, its method is: contaminated oil is drawn from fuel tank by oil pump, remove impurity through filter screen, by heater oil is heated up 40~70 ℃, again oil is sent into turbulent flow generator, make the oily rapid phase transition of water from the liquid state to the steam state of under 40~70 ℃ of temperature, pressure 1.0~2.5 MPa conditions, finishing in the oil, oil after the phase transformation and steam enter the pressure-fired gun barrel, isolate gas; Document ZL200610110057.2 has proposed a kind of oil-water separation method and oily-water seperating equipment, to be air mix with processed liquid from the bottom sucking-off of treatment trough its method, boost with circulating pump, by the nozzle ejection that is located at the treatment trough bottom, make processed liquid return treatment trough, make processed liquid circulation, the processed liquid of state of being untreated is supplied with the circulation pipe arrangement system of processed liquid or the bottom of treatment trough, in this system, add a spot of calcium chloride, hydrochloric acid and NaOH, promote the cohesion of oil, make oil separate performance and improve.Above method all need increase a plurality of equipment, the operating pressure height that has, and the need that have add chemicals, and the flow process complexity is invested higher.
Summary of the invention
Technical problem to be solved in the utility model is that oil-water separation is poor in the conventional art, and the problem that equipment investment is big provides a kind of new oil water separator.It is good that this oil water separator has an oil-water separation, the little and little characteristics of floor space of equipment investment.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows: a kind of oil water separator, this oil water separator is a horizontal vessel, container casing I is provided with inlet tube 1, water outlet 7 and oil phase outlet pipe 8, internal tank II is disposed with pre-separation inner member 2 from inlet tube to oil phase outlet pipe direction, current stabilization inner member 3, breakdown of emulsion inner member 4 and oil phase are assembled inner member 5 and baffle plate 6, inlet tube 1 stretches into internal tank and is communicated with pre-separation inner member 2, the pre-separation inner member is positioned at internal tank II below, it is a structure of container, have the aperture that flows out for liquid above, current stabilization inner member 3 is filler or the vertical corrugated plating of placing, breakdown of emulsion inner member 4 is a metallic plate, have the aperture that flows through for liquid above, it be horizontal wave card or the woven wire of placing along the container circumference that oil phase is assembled inner member 5, and baffle plate is a metallic plate, before being positioned at water outlet back oil phase and exporting.
In the technique scheme, structure is connected in oil water separator inlet tube and the pre-separation, pre-separation inner member 2 is positioned at the below, it is a structure of container, the small aperture that distributes on the inner member is 5~50 millimeters, preferable range is 20~40 millimeters, and hole count is that the liquid flow velocity that portals is the needed quantity of 0.01~1.0 meter per second, and preferable range is that the liquid flow velocity that portals is the needed quantity of 0.05~0.3 meter per second; Be provided with current stabilization inner member 3 in the oil water separator, its preferred version is the vertical corrugated plating of placing, and corrugated plating thickness is 0.1~1 meter; Be provided with breakdown of emulsion inner member 4 in the oil water separator, it is a metallic plate, and the last small aperture of opening is 10~40 millimeters, and hole count is that the liquid flow velocity that portals is the needed quantity of 0.01~0.2 meter per second; Be provided with oil phase in the oil water separator and assemble inner member 5, it is horizontal wave card or the woven wire of placing along the container circumference, and corrugated plating thickness is 0.2~3 meter, and woven wire thickness is 0.05~1 meter; Be provided with baffle plate before water outlet back, the oil phase outlet in the oil water separator, height of baffle plate is 40~90% of a container height.
The utility model is by adopting the oil water separator technical scheme of Fig. 1, the oil-containing water material enters the pre-separation inner member through inlet tube, the pre-separation inner member is positioned at the bottom of oil water separator, have aperture above, material enters in the container through pre-separation inner member aperture, make liquid stream in the process that penetrates by aperture, except that overcoming fluid resistance, also to overcome gravity acting, the underlying of the inner member of pre-separation simultaneously makes the water feed liquor of material below oil-water interfaces, when condensate liquid passes through water, thereby the coalescent chance that the stirring shear action between the liquid group has increased between the water droplet has been strengthened profit pre-separation effect; Material enters the current stabilization inner member after pre-separation, the current stabilization inner member is the vertical corrugated plating of placing, and it is even to help the liquid distributions, and even fluid distribution helps the profit Gravity Separation.Condensate liquid behind the current stabilization inner member by the top breakdown of emulsion inner member that is covered with aperture, the main effect of breakdown of emulsion inner member is the emulsion of broken aqueous phase, little oil droplet is wherein separated, and special when temperature is lower, ethylbenzene dehydrogenation reaction condensate liquid water and oil phase easily form emulsion.Behind the breakdown of emulsion inner member, the material of initial gross separation enters oil phase and assembles inner member, oil phase gathering inner member is that the ripple of horizontal positioned is less, plate group equivalent diameter is little, can be in the larger process amount, the less time of staying keeps laminar condition down, liquid stream is " it " font and flows in the corrugated plating group, the flow direction and flow area constantly change, and have created chance for oil droplet in the gathering and the mutual collision of oil droplet on corrugated plating surface, and oil droplet is buoyance lift in gathering, in buoyance lift, assemble, improved water-oil separating efficient, the oil phase after the separation is discharged by the oil phase outlet through the baffle plate overflow, and water is discharged by the water outlet.
With 100,000 tons of/year ethyl benzene dehydrogenation preparation of styrene process units is example, and the gas after the dehydrogenation reaction contains ethylbenzene, styrene, toluene (oil phase) and water (water) usually through being condensed into liquid phase in the liquid.Wherein oil phase accounts for about 1/3 (weight) of reaction condensate liquid, and water accounts for about 2/3 (weight) of reaction condensate liquid.After adopting the utility model oil water separator that condensate liquid is carried out water-oil separating, moisturely in the oil phase drop to 0.07% (weight) by original 0.1%, the aqueous phase oil-containing drops to 0.6% by original 0.9%, and volume of equipment reduces to 30 cubic metres by original 60 cubic metres, has reduced 50%; Floor space reduces to 20 square metres by original 26 square metres, has reduced 23%; Equipment investment reduces to 1,100,000 yuan by original 1,500,000 yuan, has reduced 27%, has obtained better technical effect.
Description of drawings
Fig. 1 is for adopting the oil water separator schematic diagram of technical solutions of the utility model.
Among Fig. 1, I is a container casing, and II is an internal tank, and 1 is inlet tube, and 2 is preseparator, and 3 is the current stabilization inner member, and 4 is the breakdown of emulsion inner member, and 5 are oil phase gathering inner member, and 6 is baffle plate, and 7 is the water outlet, and 8 is the oil phase outlet.
The oil-containing water material enters pre-separation inner member 2 through inlet tube 1, the aperture that has on the pre-separation inner member enters in the container, assemble inner member 5 by current stabilization inner member 3, breakdown of emulsion inner member 4, oil phase successively then, oil phase after the separation is discharged by oil phase outlet 8 through baffle plate 6 overflows, and water is discharged by water outlet 7
Below by embodiment the utility model is further elaborated.
The specific embodiment
[embodiment 1]
Certain 100,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator adopts the technology of Fig. 1.Oil water separator is a horizontal vessel, 30 cubic metres of volumes, long 8 meters, 2.4 meters of diameters, charging condensate liquid flow is 45 cubic metres, wherein water accounts for 70% (weight), and hydro carbons accounts for 30% (weight), 250 millimeters of feed tube diameter, 40 millimeters in pre-distributor perforate aperture, hole count 100, the current stabilization inner member adopts vertically arranged corrugated plating, 500 millimeters of thickness, the breakdown of emulsion inner member adopts a metallic plate, on open 25 millimeters apertures, hole count 260, oil phase is assembled inner member and is adopted the horizontal positioned corrugated plating, 2 meters of thickness, 150 millimeters in oil phase outlet pipe footpath, 400 millimeters of water outlet calibers, height of baffle plate is 80% of a container height.
1,100,000 yuan of this oil water separator equipment investments, 20 square metres of floor spaces, liquid residence time 40 minutes, moisture 0.07% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.6%.
[embodiment 2]
Certain 100,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator adopts the technology of Fig. 1.Oil water separator inlet amount, composition and device structure are with embodiment 1, different is 20 millimeters in pre-distributor perforate aperture, hole count 400,1,100,000 yuan of this oil water separator equipment investments, 20 square metres of floor spaces, liquid residence time 40 minutes, moisture 0.08% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.65%.
[embodiment 3]
Certain 100,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator adopts the technology of Fig. 1.Oil water separator inlet amount, composition and device structure are with embodiment 1, different is that the current stabilization inner member adopts filling-material structure, 1,150,000 yuan of this oil water separator equipment investments, 20 square metres of floor spaces, liquid residence time 40 minutes, moisture 0.075% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.6%.
[embodiment 4]
Certain 100,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator adopts the technology of Fig. 1.Oil water separator inlet amount, composition and device structure are with embodiment 1, different is that oil phase is assembled inner member employing woven wire, 1,080,000 yuan of this oil water separator equipment investments, 20 square metres of floor spaces, liquid residence time 40 minutes, moisture 0.08% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.7%.
[embodiment 5]
Certain 100,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator adopts the technology of Fig. 1.Oil water separator inlet amount, composition and device structure are with embodiment 1, different is that height of baffle plate is 50% of a container height, 1,100,000 yuan of this oil water separator equipment investments, 20 square metres of floor spaces, liquid residence time 40 minutes, moisture 0.09% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.7%.
[embodiment 6]
Certain 60,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator adopts the technology of Fig. 1.Oil water separator is a horizontal vessel, 25 cubic metres of volumes, long 8 meters, 2.0 meters of diameters, charging condensate liquid flow is 32 cubic metres, wherein water accounts for 72% (weight), and hydro carbons accounts for 28% (weight), 200 millimeters of feed tube diameter, 35 millimeters in pre-distributor perforate aperture, hole count 120, the current stabilization inner member adopts vertically arranged corrugated plating, 500 millimeters of thickness, the breakdown of emulsion inner member adopts a metallic plate, on open 20 millimeters apertures, hole count 200, oil phase is assembled inner member and is adopted woven wire, 2 meters of thickness, 100 millimeters in oil phase outlet pipe footpath, 250 millimeters of water outlet calibers, height of baffle plate is 80% of a container height.
850,000 yuan of this oil water separator equipment investments, 16 square metres of floor spaces, liquid residence time 46 minutes, moisture 0.06% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.55%.
[comparative example 1]
Certain 100,000 tons of/year styrene device (year operation hour 8000 hours), its ethylbenzene dehydrogenation reaction condensate liquid oil water separator operating condition is identical with embodiment 1, and different is that no pre-distribution inner member in the oil water separator, current stabilization inner member, breakdown of emulsion inner member and oil phase are assembled inner member.Oil water separator is a horizontal vessel, 60 cubic metres of volumes, and long 10 meters, 2.6 meters of diameters, 250 millimeters of feed tube diameter, 150 millimeters in oil phase outlet pipe footpath, 400 millimeters of water outlet calibers, height of baffle plate is 80% of a container height.
1,500,000 yuan of this oil water separator equipment investments, 26 square metres of floor spaces, liquid residence time 80 minutes, moisture 0.1% (weight) in the oil phase by analysis, aqueous phase oil-containing 0.9%.

Claims (7)

1. oil water separator, this oil water separator is a horizontal vessel, container casing (I) is provided with inlet tube (1), water outlet (7) and oil phase outlet pipe (8), internal tank (II) is disposed with pre-separation inner member (2) from inlet tube to oil phase outlet pipe direction, current stabilization inner member (3), breakdown of emulsion inner member (4) and oil phase are assembled inner member (5) and baffle plate (6), inlet tube stretches into internal tank and is communicated with pre-separation inner member (2), the pre-separation inner member is positioned at internal tank (II) below, it is a structure of container, have the aperture that flows out for liquid above, current stabilization inner member (3) is filler or the vertical corrugated plating of placing, breakdown of emulsion inner member (4) is a metallic plate, have the aperture that flows through for liquid above, it is horizontal wave card or the woven wire of placing along the container circumference that oil phase is assembled inner member (5), baffle plate is a metallic plate, is positioned at behind the water outlet before the oil phase outlet pipe.
2. oil water separator according to claim 1 is characterized in that the small aperture that pre-separation inner member (2) go up to distribute is 5~50 millimeters, and hole count is that the liquid flow velocity that portals is the needed quantity of 0.01~1.0 meter per second.
3. oil water separator according to claim 2 is characterized in that the small aperture that pre-separation inner member (2) distributes is 20~40 millimeters, and hole count is that the liquid flow velocity that portals is the needed quantity of 0.05~0.3 meter per second.
4. oil water separator according to claim 1 is characterized in that current stabilization inner member (3) is the vertical corrugated plating of placing, and corrugated plating thickness is 0.1~1 meter.
5. oil water separator according to claim 1 is characterized in that the small aperture of opening is 10~40 millimeters on breakdown of emulsion inner member (4) metallic plate, and hole count is that the liquid flow velocity that portals is the needed quantity of 0.01~0.2 meter per second.
6. oil water separator according to claim 1 is characterized in that it is horizontal wave card or the woven wire of placing along the container circumference that oil phase is assembled inner member (5), and corrugated plating thickness is 0.2~3 meter, and woven wire thickness is 0.05~1 meter.
7. oil water separator according to claim 1 is characterized in that being provided with baffle plate before water outlet back, the oil phase outlet in the oil water separator, and height of baffle plate is 40~90% of a container height.
CN2010201603484U 2010-04-15 2010-04-15 Oil-water separator Expired - Lifetime CN201643790U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102372581A (en) * 2010-08-23 2012-03-14 中国石油化工股份有限公司 Water distribution method of reaction product in preparation of ethylbenzene by ethanol method
CN104707363A (en) * 2013-12-16 2015-06-17 乔治·克劳德方法的研究开发空气股份有限公司 Apparatus for mechanical separation of oil and tar from gas condensate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102372581A (en) * 2010-08-23 2012-03-14 中国石油化工股份有限公司 Water distribution method of reaction product in preparation of ethylbenzene by ethanol method
CN104707363A (en) * 2013-12-16 2015-06-17 乔治·克劳德方法的研究开发空气股份有限公司 Apparatus for mechanical separation of oil and tar from gas condensate

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Granted publication date: 20101124

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