CN110002662A - A kind of recycling of marine oil overflow and the demulsification and separation system of waste oil recovery - Google Patents
A kind of recycling of marine oil overflow and the demulsification and separation system of waste oil recovery Download PDFInfo
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- CN110002662A CN110002662A CN201910361243.0A CN201910361243A CN110002662A CN 110002662 A CN110002662 A CN 110002662A CN 201910361243 A CN201910361243 A CN 201910361243A CN 110002662 A CN110002662 A CN 110002662A
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- break milk
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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Abstract
The invention discloses a kind of recycling of marine oil overflow and the demulsifications and separation system of waste oil recovery, it include: that self-priming voraxial separator is under water carried out dehydrating the aqueous sump oil that oil skimmer skims, the water that dehydration goes out is discharged in water body, and the oil that dehydration goes out is fed in high pressure/high-frequency electrostatic coalescence break milk separation device, forms sump oil of going on board；High pressure/high-frequency electrostatic coalescence break milk separation device carries out break milk separation to sump oil of going on board, and the oil that break milk separation goes out is fed in cargo tank, and the water that break milk separation goes out is admitted in low sheraing dynamic centrifugal separator；Low sheraing dynamic centrifugal separator carries out purified treatment to the water that break milk separation goes out, and the water after purified treatment is discharged in water body through the water outlet of low sheraing dynamic centrifugal separator.Not only process flow is simple and convenient to operate the present invention, low cost, occupied area is small, can be mounted on oil skimmer barge and is demulsified and detached job, but also hydraulic detention time is short, outer draining meets relevant national standard requirement after processing, is suitble to long-term operation.
Description
Technical field
The present invention relates to the broken of Sea Oil Spill Recovery Technology field more particularly to a kind of recycling of marine oil overflow and waste oil recovery
Cream and separation system.
Background technique
Marine oil overflow accident can not only pollute surrounding sea areas environment, destroy the ecological balance, but also will cause weight once occurring
Huge economic loss.With the increasing of China's offshore petroleum resources exploitation dynamics, Crude Oil at Sea drilling and carried of crude oil increase rapidly
Add, the emergency processing of marine oil overflow accident and the construction of safeguards technique demand perfection urgently.
One of the main means that oil skimming recycling is marine oil overflow emergency processing are carried out using oil skimmer barge, however, oil skimming operation
When, the water content for skimming object it is high (such as: in " 4.20 " ultra-large type oil spill events in 2010, the moisture content for skimming object is up to
90%) it is even more impossible to control for the moisture content of regenerant when, especially water-surface oil film is relatively thin.Oil storage space on oil skimmer barge is limited, because
This oil skimmer barge must not infrequently round transport and skim object containing a large amount of moisture content.In order to reduce the round-trip number of oil skimmer barge, improve and skim
Oily efficiency carries out initial gross separation to skimming object on oil skimmer barge, and clean water after separation is returned the scheme of water body of being discharged into, undoubtedly
Solve the low effective measures of oil skimmer barge operating efficiency.But it is small by oil skimmer barge working space, operator is few is limited, oil at present
The gravitational settling of field and Petrochemical Enterprises large-scale application, air bearing, chemistry, biochemistry etc. handle system process it is long, it is complicated for operation,
Take up a large area, can not be mounted on oil skimmer barge, thus research and development applied on oil skimmer barge it is easy to operate, occupied area is small, stream
The short compact grease centrifugal separation technology of journey has received widespread attention.
However, can gradually be emulsified at the oil and water interface after oil spilling under wind wave action, form oil-water emulsion (ASM
The F1780-97 (2010) of standard proposes after oil spilling that oil reservoir can gradually form aqueous 30% oil-water emulsion 12 hours)；Daylight
Under effect, the light phase of upper layer crude oil is volatilized, oil product can gradually aging, and then lead to that the aqueous sump oil skimmed emulsification is serious, oily phase
Increase in density, moisture content increasing etc., therefore the aqueous sump oil water-oil separating difficulty skimmed is big.Using regular compact separation equipment
Water phase oil content that treated is difficult to meet the ship outlet water requirements of the national standard of 15mg/L.
Patent publication No. is that a kind of " the oil spilling recycling machine people water-oil separating Processes and apparatus " of CN102989200A is adopted
It is concentrated with hydrocyclone+gravity separator with coalescent pack to skimming object, however there is no to concentration
Outer draining is handled afterwards, and the oil content of wastewater for arranging sea is up to 10000mg/L (1%).Qualified discharge is drained outside ship to meet
Limitation, it is domestic mainly using air bearing and filtering two schemes.Patent publication No. is " being received based on weir formula oily for CN102864763B
Air-dissolved spilled-oil recovery unit and method " and patent publication No. be CN105731578A " one kind is based on air-flotation type oil spilling point
From boat-carrying skimming system " use the molten gas of air dissolved pump, and to after molten gas oil spilling regenerant carry out dissolved air flotation, air dissolved pump
There is preferable shear action to gas, but also result in the broken of dispersed oil droplets, since oil water interfacial tension is much smaller than air water circle
Face tension, therefore broken oil droplet size is much smaller than bubble diameter, and then will lead to the emulsification of grease, later separation difficulty increases
Add；And the requirement that reach water outlet 15mg/L when routine air bearing mode oil-water separation is also required to biggish hydraulic detention time.Specially
A kind of " the marine oil overflow recycling air flotation processing device based on Venturi effect " of sharp Publication No. CN10544251A uses jet stream
Pump collects oil slick, and jet stream power source is gas, to realize collection and gas injection while progress.Patent publication No. is
Coarse and air bearing are combined in " a kind of quick spilled oil on water surface recovery system " of CN103343528B, it is intended to oil-containing will be drained
Amount is reduced to 10mg/L or less.However, dissolved air flotation is commonly used in the sewage oil removing operation of low oil content, Large marine is faced
When oil spilling, regenerant oil content is higher (10%), is not appropriate for directlying adopt air bearing progress water-oil separating under such floorboard with high oil content
Operation.In addition, the hydraulic detention time of conventional oil removal by air bubbling technique is longer, generally at 20 minutes or more, therefore under high throughput,
The biggish airfloat equipment of volume is difficult to install and use on ship.
" a kind of oil spilling processing unit quickly recycled " that patent publication No. is CN106836160A is using double-filtration
Mode drains, and patent publication No. is " fast and efficiently sea oil spill recovery system and its application method " of CN108179732A
Regenerant is separated using membrane separation technique, for the technical solution in the two patents when in face of large-scale oil spilling, recycling is mixed
Oil content is higher in conjunction object, and filtrate or film will be blocked quickly, so that the effective time that will lead to work is difficult to ensure.Patent
Publication No. CN203212359U " skimming plant of recyclable marine thin oil film " is using the side for being centrifugated and stopping film oil removing
Formula is handled object is skimmed, and is obstructed and is amputated oily device characteristics limitation (needing a large amount of backwashing water), the obstruction of high throughput
Waste-oil scavenger is difficult installation aboard ship.Patent disclosure is the " a kind of to have storage and advanced treating function of CN106630514A
Soft bellows enclose oily weir " use eddy flow+level-one air bearing+inclined plate sedimentation+secondary air-floatation+fine filtering Pyatyi oil removing process, patent
" the oil spilling recycling and processing device " of Publication No. CN206768775U uses level-one gravitational settling+second level gravitational settling+level-one mistake
Filter+secondary filtration technique, technical solution in the two patents is using so long process flow, equipment volume when big processing
It is difficult to ensure, is unable to satisfy the small limitation in ship space.
In conclusion the High water cut sump oil of marine oil overflow recycling, water-oil separating process flow length operate in the prior art
Complexity, hydraulic detention time are long, equipment volume is big, occupied area is wide, can not be mounted on the small oil skimmer barge in space, and do not have
Consider emulsification and the problem of aging of waste oil recovery, therefore, outer draining is difficult to meet requirements of the national standard after processing, is badly in need of research and development sea
The new process of upper oil spilling recycling and sump oil demulsification and water-oil separating.
Summary of the invention
For above-mentioned shortcoming in the prior art, the present invention provides a kind of recycling of marine oil overflow and waste oil recoveries
Demulsification and separation system, not only process flow is simple and convenient to operate, low cost, occupied area is small, can be mounted on oil skimmer barge
On, and hydraulic detention time is short, outer draining meets relevant national standard requirement after processing, is suitble to long-term operation.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of recycling of marine oil overflow and the demulsification and separation system of waste oil recovery, comprising: oil skimmer, variable-frequency motor, self-priming
Formula voraxial separator, low sheraing elevator pump, high pressure/high-frequency electrostatic coalescence break milk separation device, low are cut at high pressure/high frequency electric source
Cut dynamic centrifugal separator and cargo tank；Oil skimmer, variable-frequency motor and self-priming voraxial separator are installed under water；Oil skimming
The outlet of device is connected to the entrance of self-priming voraxial separator, and the oil outlet of self-priming voraxial separator is by low
Shearing elevator pump is connected to high pressure/high-frequency electrostatic coalescence break milk separation device；Variable-frequency motor and self-priming voraxial separator connect
It connects, and controls self-priming voraxial separator revolving speed.High pressure/high-frequency electrostatic coalescence break milk separation device, high pressure/high frequency electric source,
Low sheraing dynamic centrifugal separator and cargo tank are installed on oil skimmer barge；High pressure/high-frequency electrostatic coalescence break milk separation device and high pressure/
High frequency electric source electrical connection；High pressure/high-frequency electrostatic coalescence break milk separation device oil outlet is connected to cargo tank, and high pressure/high-frequency electrostatic
The water outlet of coalescence break milk separation device is connected to the entrance of low sheraing dynamic centrifugal separator；Low sheraing dynamic centrifugal separator
Oil outlet is connected to cargo tank.Marine oil overflow skims recycling through oil skimmer, forms aqueous sump oil, and is fed to self-priming axial whirlpool
In stream separator；Self-priming voraxial separator is under water carried out dehydrating the aqueous sump oil, what dehydration went out
Water is discharged in water body through the water outlet of self-priming voraxial separator, and the oil that dehydration goes out is made in low sheraing elevator pump
It is fed in high pressure/high-frequency electrostatic coalescence break milk separation device, is formed with the lower oil outlet through self-priming voraxial separator
It goes on board sump oil；High pressure/high-frequency electrostatic coalescence break milk separation device carries out break milk separation, the oil that break milk separation goes out to the sump oil of going on board
It is fed in cargo tank, and the water that break milk separation goes out is admitted in low sheraing dynamic centrifugal separator；Low sheraing dynamic centrifugal point
Purified treatment is carried out to the water that the break milk separation goes out from device, the oil that purified treatment obtains is through low sheraing dynamic centrifugal separator
Oil outlet is sent in cargo tank, and the water after purified treatment is discharged in water body through the water outlet of low sheraing dynamic centrifugal separator.
Preferably, the oil skimming mouth direction of the oil skimmer is consistent with the direction of advance of oil skimmer barge, the self-priming axial whirlpool
The water outlet direction of stream separator is opposite with the direction of advance of oil skimmer barge.
Preferably, the moisture control of liquid is being not more than in the oil outlet of the self-priming voraxial separator
50%.
Preferably, the oil content of liquid is controlled not in the high pressure/high-frequency electrostatic coalescence break milk separation device water outlet
Higher than 200mg/L.
Preferably, the oil content control of liquid is being not higher than in the water outlet of the low sheraing dynamic centrifugal separator
15mg/L。
Preferably, the flow of the oil outlet of the self-priming voraxial separator is not more than the 20% of its inlet flow rate；
The high pressure/high-frequency electrostatic coalescence break milk separation device water outlet flow is not less than the 40% of its inlet flow rate；The low sheraing
The water outlet flow of dynamic centrifugal separator is not less than the 95% of its inlet flow rate.
Preferably, the pipeline between the oil skimmer and the self-priming voraxial separator is equipped with flowmeter；Become
Frequency motor automatically controls the revolving speed of self-priming voraxial separator according to flowmeter in real time.
Preferably, the pipeline between low sheraing elevator pump and high pressure/high-frequency electrostatic coalescence break milk separation device is equipped with online
Water content measuring instrument；The flow of low sheraing elevator pump carries out real-time control according to online water content measuring instrument.
Preferably, high pressure/high-frequency electrostatic coalesces on the pipeline between break milk separation device and low sheraing dynamic centrifugal separator
Equipped with internally piloted valve；High pressure/high-frequency electrostatic coalescence break milk separation device water outlet flow is gathered by internally piloted valve according to high pressure/high-frequency electrostatic
The inlet flow rate for tying break milk separation device carries out real-time control.
Preferably, the water outlet pipe road of the low sheraing dynamic centrifugal separator is equipped with online oil-containing flowmeter.
As seen from the above technical solution provided by the invention, marine oil overflow recycling and recycling provided by the present invention are dirty
In the demulsification and separation system of oil, underwater dehydration is combined with sewage purification on break milk separation on ship, ship: using no pressure
The self-priming voraxial separator of power loss is under water carried out dehydrating the aqueous sump oil that oil skimmer skims, to avoid
The limitation of oil content is drained outside ship, and using the moisture content for sump oil of going on board as unique Con trolling index, control is simple, significantly
Reduce sewage quantity of going on board；Using the compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device of installation aboard ship to sump oil of going on board
Break milk separation is carried out, solves the problems, such as that the aging of oil spilling regenerant and emulsification etc. influence separating property；Aboard ship using installation
Low sheraing dynamic centrifugal separator carries out purified treatment to the water that break milk separation goes out, so that outer draining be made to meet relevant national standard
It is required that.Not only simple process, easy to operate, low cost, occupied area are small by the present invention, can be mounted on the small oil skimmer barge in space
On, and total hrt is not more than 360s, and outer draining meets relevant national standard requirement after processing, is suitble to long period fortune
Turn, therefore the present invention is a kind of ideal technology scheme of marine oil overflow recycling, has biggish real value.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the process signal of marine oil overflow recycling and the demulsification of waste oil recovery and separation system in the embodiment of the present invention 1
Figure.
Wherein, 1- oil skimmer, 2- flowmeter, 3- variable-frequency motor, the self-priming voraxial separator of 4-, 5- low sheraing are promoted
Pump, the online water content measuring instrument of 6-, 7- high pressure/high-frequency electrostatic coalescence break milk separation device, 8- high pressure/high frequency electric source, 9- internally piloted valve,
10- low sheraing dynamic centrifugal separator, 11- cargo tank, the online oil-containing flowmeter of 12-.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
Marine oil overflow provided by the present invention recycling and the demulsification of waste oil recovery and separation system are retouched in detail below
It states.The content being not described in detail in the embodiment of the present invention belongs to the prior art well known to professional and technical personnel in the field.
As shown in Figure 1, a kind of marine oil overflow recycling and the demulsification and separation system of waste oil recovery, may include: oil skimmer
1, flowmeter 2, variable-frequency motor 3, self-priming voraxial separator 4, low sheraing elevator pump 5, online water content measuring instrument 6, height
Pressure/high-frequency electrostatic coalesces break milk separation device 7, high pressure/high frequency electric source 8, internally piloted valve 9, low sheraing dynamic centrifugal separator 10, cargo tank
11 and online oil-containing flowmeter 12.
Oil skimmer 1, variable-frequency motor 3 and self-priming voraxial separator 4 are installed under water；The outlet of oil skimmer 1 with
The entrance of self-priming voraxial separator 4 is connected to, and the oil outlet of self-priming voraxial separator 4 is promoted by low sheraing
Pump 5 is connected to high pressure/high-frequency electrostatic coalescence break milk separation device 7；Variable-frequency motor 3 is connect with self-priming voraxial separator 4, and
Control self-priming 4 revolving speed of voraxial separator.
High pressure/high-frequency electrostatic coalesces break milk separation device 7, high pressure/high frequency electric source 8,10 and of low sheraing dynamic centrifugal separator
Cargo tank 11 is installed on oil skimmer barge；High pressure/high-frequency electrostatic coalescence break milk separation device 7 is electrically connected with high pressure/high frequency electric source 8；It is high
Pressure/high-frequency electrostatic coalescence break milk separation device 7 oil outlet is connected to cargo tank 11, and high pressure/high-frequency electrostatic coalesces break milk separation device 7
Water outlet be connected to the entrance of low sheraing dynamic centrifugal separator 10；The oil outlet and oil of low sheraing dynamic centrifugal separator 10
Cabin 11 is connected to.
Pipeline between the oil skimmer 1 and the self-priming voraxial separator 4 is equipped with flowmeter 2；It is described low
The pipeline sheared between elevator pump 5 and high pressure/high-frequency electrostatic coalescence break milk separation device 7 is equipped with flowmeter 2 and online water content
Measuring instrument 6；The high pressure/high-frequency electrostatic coalesces on the pipeline between break milk separation device 7 and low sheraing dynamic centrifugal separator 10
Equipped with internally piloted valve 9 and flowmeter 2；The water outlet pipe road of the low sheraing dynamic centrifugal separator 10 is equipped with internally piloted valve 9, online
Oil-containing flowmeter 12 and flowmeter 2.
Marine oil overflow skims recycling through oil skimmer 1, forms aqueous sump oil, and is fed to self-priming voraxial separator
In 4；Self-priming voraxial separator 4 is under water carried out dehydrating the aqueous sump oil, and the water that dehydration goes out passes through certainly
The water outlet of suction voraxial separator 4 is discharged in water body, and the oil that dehydration goes out is under the effect of low sheraing elevator pump 5
Oil outlet through self-priming voraxial separator 4 is fed in high pressure/high-frequency electrostatic coalescence break milk separation device 7, in formation
Ship sump oil；High pressure/high-frequency electrostatic coalescence break milk separation device 7 carries out break milk separation, the oil that break milk separation goes out to the sump oil of going on board
It is fed in cargo tank 11, and the water that break milk separation goes out is admitted in low sheraing dynamic centrifugal separator 10；Low sheraing dynamic from
Centrifugal separator 10 carries out purified treatment to the water that the break milk separation goes out, and the oil that purified treatment obtains is through low sheraing dynamic centrifugal point
Oil outlet from device 10 is sent in cargo tank 11, and the water after purified treatment is arranged through the water outlet of low sheraing dynamic centrifugal separator 10
Out into water body.
Specifically, marine oil overflow recycling and the demulsification of waste oil recovery and each component of separation system may include following reality
Apply scheme:
(1) oil skimmer 1 and self-priming voraxial separator 4 are mounted in the water body of oil skimmer barge side, and are in water
The oil skimming mouth direction of existing suspended state, the oil skimmer 1 is consistent with the direction of advance of oil skimmer barge, the self-priming axial eddy point
Water outlet from device 4 is towards the direction of advance with oil skimmer barge on the contrary, to which oil skimmer barge when oil skimmer barge advances and the opposite of water body are transported
It moves and provides driving force to oil skimmer 1, be not necessarily to excess loss.
(2) the aqueous sump oil that oil skimmer 1 is skimmed under water using the self-priming voraxial separator 4 of no pressure loss
It is carried out dehydrating, the aqueous sump oil that oil skimmer 1 skims at this time is not gone on board, therefore the water that dehydration goes out is not by ship outlet
The limitation of water oil content, can be vented directly in water body, so that the Con trolling index of self-priming voraxial separator 4 does not need to examine
Consider the oil content of liquid in water outlet.Moisture content (the sump oil of going on board of liquid in self-priming 4 oil outlet of voraxial separator
Moisture content) it is unique Con trolling index, it can be according in self-priming 4 oil outlet of voraxial separator on the moisture control of liquid
Ship sump oil total amount, so as to which sewage quantity of going on board is greatly reduced.In practical applications, it is little to can control sump oil total amount of going on board
In the 20% of the aqueous sump oil that oil skimmer 1 skims, so as to greatly improve the treating capacity of oil skimmer 1.
(3) variable-frequency motor 3 carries out automatic in real time according to revolving speed of the flowmeter 2 to self-priming voraxial separator 4
Control, to have biggish adaptability to the fluctuation range of inlet flow rate.
(4) online water content measuring instrument 6 is used to detect the moisture content for sump oil of going on board；The flow of low sheraing elevator pump 5 according to
The testing result of online water content measuring instrument 6 carries out real-time control.When Large marine oil spill accident occurs, oil film is thicker, skims
Generally 90%, the moisture content for sump oil of going on board at this time can control below 50% the moisture content for the aqueous sump oil that oily device 1 skims；
When oil film is relatively thin, the moisture content for the aqueous sump oil that oil skimmer 1 skims is generally not more than 99%, and the moisture content for sump oil of going on board at this time can
To control below 80%.
(5) high pressure/high-frequency electrostatic coalescence break milk separation device 7 can use compact-type high-pressure/height in the prior art
Frequency electrostatic coalescence break milk separation device.Under high pressure/high-frequency electric field effect, particle water coalescence is sunk in the oil water mixture of emulsification,
It is oily mutually to float and then realize separation.High pressure/high-frequency electrostatic coalescence break milk separation device 7 is using high pressure/high-frequency electric field to sump oil of going on board
It is demulsified, while carrying out thickening, this reduces later separation difficulty while completing sump oil concentration.According to the U.S.
CAMERON company report, the said firm research and development compact-type high-pressure/high-frequency electrostatic coalesce break milk separation device, when entering moisture content not
When higher than 75%, water outlet oil content is lower than 200mg/L, and oil outlet moisture content is lower than 10%, and hydraulic detention time is not more than
300s, and after high pressure/high-frequency electrostatic coalescence processing, ageing oil and oil emulsion are changed into segregative dispersed oil phase in sewage.
It in practical applications, is the oil content convenient for operating and ensuring liquid in high pressure/high-frequency electrostatic coalescence 7 water outlet of break milk separation device
Not higher than 200mg/L, when the moisture content for sump oil of going on board is not higher than 50%, high pressure/high-frequency electrostatic coalescence break milk separation device 7 goes out
Mouth of a river flow can be set as the 40% of its inlet flow rate, and the moisture content of liquid is not more than 16.7% in its oil outlet at this time；When going on board
When the moisture content of sump oil is not higher than 80%, high pressure/high-frequency electrostatic coalescence break milk separation device 7 water outlet flow can be set as its entrance
The 60% of flow, the moisture content of liquid is not more than 50% in its oil outlet at this time.High pressure/high-frequency electrostatic coalesces break milk separation device 7
Water outlet flow real-time control is carried out according to the inlet flow rate of high pressure/high-frequency electrostatic coalescence break milk separation device 7 by internally piloted valve 9.
(6) the water outlet flow of the low sheraing dynamic centrifugal separator 10 is not less than the 95% of its inlet flow rate.Online
Oil-containing flowmeter 12 is used to detect the oil content of liquid in 10 water outlet of low sheraing dynamic centrifugal separator.The low sheraing is dynamic
The oil content control of liquid is being not higher than 15mg/L in 10 water outlet of state whizzer.The low sheraing dynamic centrifugal separator
10 can use level-one low sheraing dynamic centrifugal separator in the prior art.For containing lower than 200mg/L dispersed oil phase
For oily wastewater, French YLec Consultants's the experimental results showed that level-one low sheraing dynamic centrifugal separator handle
Afterwards, the oil content of liquid can be reduced to the ship outlet water national standard of 15mg/L completely in water outlet, to handle up to standard
Clean water be discharged into water body, and oil can mutually enter cargo tank 11.
(7) hydraulic detention time of the self-priming voraxial separator 4 is not more than 2s, the high pressure/high-frequency electrostatic
The hydraulic detention time for coalescing break milk separation device 7 is not more than 300s, the hydraulic retention of the low sheraing dynamic centrifugal separator 10
Time is not more than 15s, and total hrt of the invention is calculated and is not more than 360s, therefore hydraulic detention time of the present invention
It is short.Device therefor overall volume of the present invention is small, and sump oil amount of going on board is greater than 60m3When/h, the size for being mounted on ship upper module does not also surpass
Cross 6.0m × 2.45m × 2.5m Container Dimensions.Therefore the present invention fundamentally solves that sewage quantity of going on board is big, oil-water emulsion
Deng the critical issue for influencing oil skimmer barge efficiency, have a large promotion value.
Further, in marine oil overflow recycling and the demulsification and separation system of waste oil recovery provided by the present invention, by water
Lower dehydration is combined with sewage purification on break milk separation on ship, ship: using the self-priming axial eddy point of no pressure loss
The aqueous sump oil that oil skimmer 1 skims is carried out dehydrating under water from device 4, to avoid the limit for draining oil content outside ship
System, and using the moisture content for sump oil of going on board as unique Con trolling index, control is simple, drastically reduces sewage quantity of going on board；Using
Compact-type high-pressure/high-frequency electrostatic coalescence break milk separation the device of installation aboard ship carries out break milk separation to sump oil of going on board, and solves excessive
Oily regenerant aging and emulsification etc. influence the problem of separating property；Using the low sheraing dynamic centrifugal separator 10 of installation aboard ship
Purified treatment is carried out to the water that break milk separation goes out, so that outer draining be made to meet relevant national standard requirement.It is provided by the present invention
Marine oil overflow recycling and waste oil recovery demulsification and separation system process flow be short, total hrt is not more than 360s, be
A kind of ideal technology scheme of marine oil overflow recycling, has biggish real value.
Compared with prior art, marine oil overflow provided by the invention recycling and the demulsification of waste oil recovery and separation system be at least
It has the advantage that
(1) when being advanced in the present invention using oil skimmer barge 1 and the relative motion of water body realizes that oil skimming is recycled, using self-priming axis
Underwater dehydration is carried out to the aqueous sump oil skimmed to whirlpool separator 4, plays certain pumpability while separation.
(2) oil skimmer 1 is skimmed under water using the self-priming voraxial separator 4 of no pressure loss in the present invention
Aqueous sump oil is carried out dehydrating, and aqueous sump oil at this time is not gone on board, therefore the water that dehydration goes out is not drained by outside ship
Oil content limitation, can be vented directly in water body, it is only necessary to the i.e. controllable sump oil amount of going on board of moisture content for sump oil of going on board is controlled,
The mode of this single factors control, is easy to implement automatic control.
(3) present invention is dehydrated using the strong centrifugation of self-priming voraxial separator 4, and hydraulic detention time is short, only
For 2s, dehydration equipment size is small, can directly be installed under water.
(4) present invention is demulsified to sump oil of going on board, is dense using compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7
Contracting, not only reduces the moisture content of oil recovery, also improves the efficiency of subsequent water-oil separating.
(5) self-priming voraxial separator 4 and low sheraing dynamic centrifugal separator 10 used in the present invention are all made of frequency conversion
Motor real-time control, to sea situation it is applicable well.
(6) overall craft process of the present invention is short, hydraulic detention time is no more than 360s, equipment it is small in size, can be direct
Installation is aboard ship；The present invention can Automatic Control, it is easy to operate, without professional operate, be applicable in offshore spilled oil recycling at
The particular surroundings of reason.
To sum up, not only process flow is simple and convenient to operate the embodiment of the present invention, low cost, occupied area are small, can
It is mounted on oil skimmer barge and carries out demulsification and detached job, and hydraulic detention time is short, outer draining satisfaction country is related after processing
Standard requirements are suitble to long-term operation.
In order to more clearly from show technical solution provided by the present invention and generated technical effect, below with tool
Body embodiment in the embodiment of the present invention marine oil overflow recycling and waste oil recovery demulsification and separation system be described in detail.
Embodiment 1
As shown in Figure 1, a kind of marine oil overflow recycling and the demulsification and separation system of waste oil recovery, may include: oil skimmer
1, flowmeter 2, variable-frequency motor 3, self-priming voraxial separator 4, low sheraing elevator pump 5, online water content measuring instrument 6, tight
Type high pressure/the high-frequency electrostatic that gathers coalesces break milk separation device 7, high pressure/high frequency electric source 8, internally piloted valve 9, low sheraing dynamic centrifugal separator
10, cargo tank 11 and online oil-containing flowmeter 12.
Oil skimmer 1, variable-frequency motor 3 and self-priming voraxial separator 4 are installed under water；The outlet of oil skimmer 1 with
The entrance of self-priming voraxial separator 4 is connected to, and the oil outlet of self-priming voraxial separator 4 is promoted by low sheraing
Pump 5 is connected to high pressure/high-frequency electrostatic coalescence break milk separation device 7；Variable-frequency motor 3 is connect with self-priming voraxial separator 4, and
Control self-priming 4 revolving speed of voraxial separator.
Compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7, high pressure/high frequency electric source 8, the separation of low sheraing dynamic centrifugal
Device 10 and cargo tank 11 are installed on oil skimmer barge；Compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7 and high pressure/high-frequency electrical
Source 8 is electrically connected；Compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7 oil outlet is connected to cargo tank 11, and compact is high
Pressure/high-frequency electrostatic coalescence break milk separation device 7 water outlet is connected to the entrance of low sheraing dynamic centrifugal separator 10；Low sheraing is dynamic
The oil outlet of state whizzer 10 is connected to cargo tank 11.
Pipeline between the oil skimmer 1 and the self-priming voraxial separator 4 is equipped with flowmeter 2；It is described low
It shears the pipeline between elevator pump 5 and compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7 and is equipped with flowmeter 2 and online
Water content measuring instrument 6；The compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7 and low sheraing dynamic centrifugal separator 10
Between pipeline be equipped with internally piloted valve 9 and flowmeter 2；The water outlet pipe road of the low sheraing dynamic centrifugal separator 10 is equipped with
Internally piloted valve 9, online oil-containing flowmeter 12 and flowmeter 2.
Marine oil overflow skims recycling through oil skimmer 1, forms aqueous sump oil, and is fed to self-priming voraxial separator
In 4；Self-priming voraxial separator 4 is under water carried out dehydrating the aqueous sump oil, and the water that dehydration goes out passes through certainly
The water outlet of suction voraxial separator 4 is discharged in water body, and the oil that dehydration goes out is under the effect of low sheraing elevator pump 5
Oil outlet through self-priming voraxial separator 4 is fed in compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7,
Formation is gone on board sump oil；Compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7 carries out break milk separation to the sump oil of going on board, and breaks
The oil that cream is isolated is fed in cargo tank 11, and the water that break milk separation goes out is admitted in low sheraing dynamic centrifugal separator 10；
Low sheraing dynamic centrifugal separator 10 carries out purified treatment to the water that the break milk separation goes out, and the oil that purified treatment obtains is cut through low
The oil outlet for cutting dynamic centrifugal separator 10 is sent in cargo tank 11, and the water after purified treatment is through low sheraing dynamic centrifugal separator
10 water outlet is discharged in water body.
It specifically, is 300m with large-scale oil spill accident oil skimming amount3For the oil skimmer 1 of/h, 1 oepration at full load of oil skimmer
300m3/ h, the oil content of the aqueous sump oil skimmed according to oil skimmer 1 are 10% calculating, and to guarantee to go on board, sump oil moisture content is less than
50%, the oil outlet flow of self-priming voraxial separator 4 is not more than the 20% of its inlet flow rate, that is, is not more than 60m3/h；
Compact-type high-pressure/high-frequency electrostatic coalescence break milk separation device 7 inlet flow rate is not more than 60m3/ h, water outlet flow are set as it and enter
The 40% of mouth flow, as 24m3/h；10 inlet flow rate of low sheraing dynamic centrifugal separator and compact-type high-pressure/high-frequency electrostatic are poly-
The water outlet flow for tying break milk separation device 7 is equal, and water outlet flow is set as the 95% of its inlet flow rate, as 22.8m3/h。
As it can be seen that for large-scale oil spill accident, when 1 oil skimming amount of oil skimmer is 300m3/ h, the sump oil amount into cargo tank 11 is only 37.2m3/ h,
The oil skimmer barge working time is improved nearly 9 times.
Further, the oil outlet flow of self-priming voraxial separator 4 is by low sheraing elevator pump 5 according to online aqueous
6 auto-control of flowmeter, the flow of remaining separator at different levels are controlled by internally piloted valve.After being provided with, oil skimming is successively opened
Device 1, low sheraing elevator pump 5, self-priming voraxial separator 4, compact-type high-pressure/high-frequency electrostatic coalesce 7 and of break milk separation device
Low sheraing dynamic centrifugal separator 10.After starting, system is voluntarily operated, and the revolving speed of centrifugal separation equipment is voluntarily adjusted according to flow
It is whole.The present invention can be directly installed on oil skimmer barge, only need to adjust separators at different levels according to oil spilling place core intersection when operation
Flow, it is easy to operate, stability is good, high-efficient.
The present invention is carried out dehydrating under water using self-priming voraxial separator 4, controls dirt of going on board well
The moisture content of oil, when extensive oil spilling, goes on board sump oil moisture content not higher than 50%, so that sump oil amount of going on board is greatly lowered, total amount
No more than the 20% of 1 oil skimming amount of oil skimmer, the treating capacity of oil skimmer 1 is greatly improved.The present invention is using the compact on ship
High pressure/high-frequency electrostatic coalescence break milk separation device 7 carries out break milk separation, the sewage containing free state oil phase of abjection to sump oil of going on board
After the processing of level-one low sheraing dynamic centrifugal separator can standard discharge, the moisture content of sump oil is not higher than 20% in cargo tank.Tool
When body is implemented, realize that the equipment volume of the technique stream is small, treating capacity is big, separative efficiency is high；It is suitble to promote the use of in spill response
Guarantee in operation, cooperation oil fence using effect is more preferably.
To sum up, not only process flow is simple and convenient to operate the embodiment of the present invention, low cost, occupied area are small, can
It is mounted on oil skimmer barge and carries out demulsification and detached job, and hydraulic detention time is short, outer draining satisfaction country is related after processing
Standard requirements are suitble to long-term operation.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of marine oil overflow recycling and the demulsification and separation system of waste oil recovery characterized by comprising oil skimmer (1) becomes
Frequency motor (3), self-priming voraxial separator (4), low sheraing elevator pump (5), high pressure/high-frequency electrostatic coalesce break milk separation device
(7), high pressure/high frequency electric source (8), low sheraing dynamic centrifugal separator (10) and cargo tank (11)；
Oil skimmer (1), variable-frequency motor (3) and self-priming voraxial separator (4) are installed under water；Oil skimmer (1) goes out
Mouthful be connected to the entrance of self-priming voraxial separator (4), and the oil outlet of self-priming voraxial separator (4) pass through it is low
Shearing elevator pump (5) is connected to high pressure/high-frequency electrostatic coalescence break milk separation device (7)；Variable-frequency motor (3) and self-priming axial eddy
Separator (4) connection, and control self-priming voraxial separator (4) revolving speed；
High pressure/high-frequency electrostatic coalesces break milk separation device (7), high pressure/high frequency electric source (8), low sheraing dynamic centrifugal separator (10)
It is installed on oil skimmer barge with cargo tank (11)；High pressure/high-frequency electrostatic coalescence break milk separation device (7) and high pressure/high frequency electric source (8) electricity
Connection；High pressure/high-frequency electrostatic coalescence break milk separation device (7) oil outlet is connected to cargo tank (11), and high pressure/high-frequency electrostatic coalescence
The water outlet of break milk separation device (7) is connected to the entrance of low sheraing dynamic centrifugal separator (10)；The separation of low sheraing dynamic centrifugal
The oil outlet of device (10) is connected to cargo tank (11)；
Marine oil overflow skims recycling through oil skimmer (1), forms aqueous sump oil, and is fed to self-priming voraxial separator
(4) in；Self-priming voraxial separator (4) is under water carried out dehydrating the aqueous sump oil, the water that dehydration goes out
Water outlet through self-priming voraxial separator (4) is discharged in water body, and the oil that dehydration goes out is in low sheraing elevator pump
(5) oil outlet through self-priming voraxial separator (4) is fed to high pressure/high-frequency electrostatic coalescence break milk separation device under acting on
(7) in, sump oil of going on board is formed；High pressure/high-frequency electrostatic coalescence break milk separation device (7) carries out break milk separation to the sump oil of going on board,
The oil that break milk separation goes out is fed in cargo tank (11), and the water that break milk separation goes out is admitted to low sheraing dynamic centrifugal separator
(10) in；Low sheraing dynamic centrifugal separator (10) carries out purified treatment to the water that the break milk separation goes out, and purified treatment obtains
The oily oil outlet through low sheraing dynamic centrifugal separator (10) be sent in cargo tank (11), the water after purified treatment is through low sheraing
The water outlet of dynamic centrifugal separator (10) is discharged in water body.
2. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that institute
The oil skimming mouth direction for stating oil skimmer (1) is consistent with the direction of advance of oil skimmer barge, and the self-priming voraxial separator (4) goes out
Mouth of a river direction is opposite with the direction of advance of oil skimmer barge.
3. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that institute
The moisture control of liquid in the oil outlet of self-priming voraxial separator (4) is stated no more than 50%.
4. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that institute
The oil content control of liquid in high pressure/high-frequency electrostatic coalescence break milk separation device (7) water outlet is stated not higher than 200mg/L.
5. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that institute
The oil content control of liquid in the water outlet of low sheraing dynamic centrifugal separator (10) is stated not higher than 15mg/L.
6. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that institute
The flow for stating the oil outlet of self-priming voraxial separator (4) is not more than the 20% of its inlet flow rate；High pressure/the high frequency is quiet
The water outlet flow of voltolisation knot break milk separation device (7) is not less than the 40% of its inlet flow rate；The low sheraing dynamic centrifugal separation
The water outlet flow of device (10) is not less than the 95% of its inlet flow rate.
7. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that institute
The pipeline stated between oil skimmer (1) and the self-priming voraxial separator (4) is equipped with flowmeter (2)；Variable-frequency motor (3)
Automatically control the revolving speed of self-priming voraxial separator (4) in real time according to flowmeter (2).
8. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that low
The pipeline sheared between elevator pump (5) and high pressure/high-frequency electrostatic coalescence break milk separation device (7) is equipped with online water content measuring instrument
(6)；The flow of low sheraing elevator pump (5) carries out real-time control according to online water content measuring instrument (6).
9. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that high
Pressure/pipeline between high-frequency electrostatic coalescence break milk separation device (7) and low sheraing dynamic centrifugal separator (10) is equipped with internally piloted valve
(9)；High pressure/high-frequency electrostatic coalescence break milk separation device (7) water outlet flow is poly- according to high pressure/high-frequency electrostatic by internally piloted valve (9)
The inlet flow rate for tying break milk separation device (7) carries out real-time control.
10. marine oil overflow recycling according to claim 1 and the demulsification and separation system of waste oil recovery, which is characterized in that
The water outlet pipe road of the low sheraing dynamic centrifugal separator (10) is equipped with online oil-containing flowmeter (12).
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