CN106242205B - A kind of process handling oil field oil sludge - Google Patents
A kind of process handling oil field oil sludge Download PDFInfo
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- CN106242205B CN106242205B CN201610630028.2A CN201610630028A CN106242205B CN 106242205 B CN106242205 B CN 106242205B CN 201610630028 A CN201610630028 A CN 201610630028A CN 106242205 B CN106242205 B CN 106242205B
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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
- C02F11/00—Treatment of sludge; Devices therefor
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to oil sludge processing technology fields, more particularly to a kind of process for handling oil field oil sludge, the process are as follows: the screening of solid-state oily sludge, the crushing of solid-state oily sludge dry blowing vapo(u)rizing oil, solid-state oily sludge high pressure water, liquid oily sludge pre-processes, level-one cleaning, second level cleaning, three-level cleaning, level Four is cleaned, dehydration and grease recycle；Wherein oil dissolving tank includes cabinet, uniformly distributed ring cavity sieve column and dry saturated steam spray head, and dry saturated steam spray head is located at the inside of ring cavity sieve column, and the sieve diameter that ring cavity sieves column inside and outside wall is 5 millimeters, and ring cavity sieve column bottom, which is equipped with, may be reversed discharging cover board；Crush box includes shell, uniformly distributed hopper and high-pressure water spraying gun, and high-pressure water spraying gun is located at the top of hopper, and the two side walls of hopper are equipped with uniformly distributed circular hole.Technological design of the invention is reasonable, safety and environmental protection, high treating effect, and treatment effeciency is high, and processing capacity is strong, save the cost, economic and practical.
Description
Technical field:
The invention belongs to oil sludge processing technology fields, and in particular to a kind of process for handling oil field oil sludge.
Background technique:
Currently, oilfield treatments oil sludge technical solution is: oil sludge squeezes into heating and stirring tank, and demulsifier and cleaning is added
It is heated to 60~80 DEG C after the medicaments such as agent, flocculant is added simultaneously subsequently into the common sewage decanter centrifuge of two-phase, by sludge
It separates with oil water mixture, then again separates oil, water.However it is had the disadvantage in that using the prior art due to adding in the process
Enter medicament, on the other hand one side waste of resource can generate secondary pollution, furthermore the process is difficult to reach national dirty
Standard as defined in oil content in mud is handled if accomplishing that sludge oil content is also difficult to carry out industrialization production lower than national standard
Measure it is small, generally in 200~300KG/H.Existing complex treatment process, module number is more, and high failure rate, space occupied is big, oil,
Water is separated by settlement separation tank；If producing 2 tons or more silt oil-containings 3%~6% per hour, oil-containing is greater than in water
500PPM, Water in oil are greater than 5%.
Summary of the invention:
In place of the present invention makes up and improves above-mentioned the deficiencies in the prior art, provide a kind of technological design rationally, safety collar
Guarantor, high treating effect, treatment effeciency is high, processing capacity is strong, save the cost, a kind of work of economic and practical processing oil field oil sludge
Process can be promoted and be used on a large scale.
The technical solution adopted by the present invention are as follows: a kind of process for handling oil field oil sludge, the process are as follows:
Step 1: solid-state oily sludge screens
Solid-state oily sludge is broken up by sludge sorting unit, the solid-state sump oil clod after breaing up passes through vibrating screen
Machine is selected to be screened, the particle in sludge greater than 2 centimetres is delivered to sludge sorting unit and breaks up again, and particle is less than 2 centimetres
Sludge bulking is to be processed in oil dissolving tank by being delivered to, and during vibration screening, the sundries such as stone and fiber are sorted to receipts
In header；
Step 2: solid-state oily sludge dry blowing vapo(u)rizing oil
The oil sludge particle no more than 1 centimetre that vibrating screener is sifted out is delivered to oil dissolving tank by screw feeding machine
Ring cavity sieves in column, after ring cavity sieve column fills oil sludge particle, ring cavity is sieved the dry saturated steam spray head in column and the steaming of superheater is housed
Boiler furnace connection, starting steam boiler carry out carburetion, and wherein the temperature of dry saturated steam is 250 DEG C -300 DEG C, and the oil of precipitation is returned
Receipts processing；
Step 3: solid-state oily sludge high pressure water crushes
Oil sludge particle after carburetion in step 2 is delivered in the hopper of crush box, by the high pressure water jets at the top of hopper
Rifle is connect with high pressure washer, starts high pressure washer, is carried out high pressure water crushing to the oil sludge particle in hopper, is crushed
Liquid oily sludge afterwards is delivered to level-one cleaning device and is handled；
Step 4: liquid oily sludge pre-processes
Liquid oily sludge is filtered by the screen to filtrate device, the solid-state oily sludge or semisolid that filter out are contained
Greasy dirt repeats step 1 to step 3, and filtered liquid oily sludge is delivered to level-one cleaning device and is cleaned；
Step 5: level-one is cleaned
The liquid oily sludge of step 3 and step 4 is delivered in level-one cleaning device by delivery pump and carries out level-one
Cleaning, level-one cleaning device includes level-one rinse bath, level-one cleans ultrasonic Treatment of Sludge device, level-one cleans air-floating apparatus, medicament
Chemicals dosing plant receives oil pump and level-one and cleans oil-collecting device, oil sludge by delivery pump be delivered to level-one rinse bath top into mud
Mouthful, sludge slides into along level-one cleaning device along cloth mud plate, cleans ultrasonic Treatment of Sludge device, clearly by level-one in level-one rinse bath
Lotion and pneumatically supported collective effect, clean oily sludge, recycle to the crude oil of precipitation, the behaviour of level-one cleaning device
Making temperature is 90 DEG C；Pass through investment adding medicine and be aided with the quenched means for heating visbreaking, adjusts character and the row of solid grain subgroup
Column-shaped state makes the desorption of absorption oil and demulsification that its medium viscosity is big, is allowed to be suitble to the processing of different dehydration conditions；
Step 6: second level is cleaned
Mixing mud after level-one is cleaned is delivered to second level cleaning device and carries out second level cleaning, and second level cleaning device includes
Second level rinse bath, second level clean ultrasonic Treatment of Sludge device, second level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil
Pump and second level physics oil-collecting device, the mixing mud into second level cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Second level cleaning is carried out to oily sludge, recycles top oil slick, lower part mud is sent to three-level cleaning device；
Step 7: three-level is cleaned
Mixing mud after second level is cleaned is delivered to three-level cleaning device and carries out three-level cleaning, and three-level cleaning device includes
Three-level rinse bath, three-level clean ultrasonic Treatment of Sludge device, three-level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil
Pump and three-level physics oil-collecting device, the mixing mud into three-level cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Three-level cleaning is carried out to oily sludge, recycles top oil slick, lower part mud is sent to level Four cleaning device；
Step 8: level Four is cleaned
Mixing mud after three-level is cleaned is delivered to level Four cleaning device and carries out level Four cleaning, and level Four cleaning device includes
Level Four rinse bath, level Four clean ultrasonic Treatment of Sludge device, level Four cleaning air-floating apparatus, oxidant chemicals dosing plant, elevator pump, receive oil
Pump and level Four physics oil-collecting device, the mixing mud into level Four cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Level Four cleaning is carried out to oily sludge, oxidant and flocculant are added after cleaning, and mixing mud is delivered at centrifugation
Reason device is handled；
Step 9: dehydration
Mixing mud after level Four is cleaned is carried out dehydrating by Centrifugal treatment device, which is integrated with flocculant
Chemicals dosing plant, the sludge separated from Centrifugal treatment device, oil-containing≤2%, aqueous is 75%, can be by if you need to advanced treating
Screw conveyor send to advanced treatment apparatus and is further processed；
Step 10: grease recycles
Level-one rinse bath, second level rinse bath, three-level rinse bath and the oil slick on level Four rinse bath top are carried out by oil tank
Recycling, is recycled the oily wastewater isolated by water pot.
Oil dissolving tank in the step 2 for realization sump oil sludge treatment technology includes cabinet, uniformly distributed ring cavity sieve column and dry blowing
Vapour spray head, dry saturated steam spray head are located at the inside of ring cavity sieve column, and the sieve diameter that ring cavity sieves column inside and outside wall is 5 millimeters, and ring cavity sieves column
Bottom, which is equipped with, may be reversed discharging cover board.
Crush box in the step 3 for realization sump oil sludge treatment technology includes shell, uniformly distributed hopper and high pressure water jets
Rifle, high-pressure water spraying gun are located at the top of hopper, and the two side walls of hopper are equipped with uniformly distributed circular hole.
Beneficial effects of the present invention: technological design is reasonable, safety and environmental protection, high treating effect, and treatment effeciency is high, processing capacity
By force, save the cost, it is economic and practical.Oil-containing is generally 2% or so in treated sludge, moisture content 80% or so, if being not required to depth
Degree processing can directly outlet handle, if you need to advanced treating, can be transported to advanced treating by screw conveyor or sludge dummy car and set
Near applying；The heat preservation of whole set process pipeline peripheral hardware prevents thermal losses and operator's high temperature from scalding, motor hand-operated valve in technique
Door selection liner polytetrafluoro spool, reduces damage of the silt to valve body.
Detailed description of the invention:
Fig. 1 is the Oil Containing Sludge Treatment flow chart of embodiment two in the present invention.
Fig. 2 is the structural schematic diagram of oil dissolving tank in the present invention.
Fig. 3 is the structural schematic diagram of crush box in the present invention.
Specific embodiment:
Embodiment one
Referring to Fig. 2 and Fig. 3, a kind of process handling oil field oil sludge, the process are as follows:
Step 1: solid-state oily sludge screens
Solid-state oily sludge is broken up by sludge sorting unit, the solid-state sump oil clod after breaing up passes through vibrating screen
Machine is selected to be screened, the particle in sludge greater than 2 centimetres is delivered to sludge sorting unit and breaks up again, and particle is less than 2 centimetres
Sludge bulking is to be processed in oil dissolving tank by being delivered to, during vibration screening, by stone, fiber, weeds, building waste etc.
Sundries is sorted in collecting box；
Step 2: solid-state oily sludge dry blowing vapo(u)rizing oil
The oil sludge particle no more than 1 centimetre that vibrating screener is sifted out is delivered to oil dissolving tank by screw feeding machine
Ring cavity sieves in column 2, after ring cavity sieve column 2 fills oil sludge particle, ring cavity is sieved the dry saturated steam spray head 3 in column 2 and superheater is housed
Steam boiler connection, starting steam boiler carry out carburetion, wherein the temperature of dry saturated steam be 280 DEG C, the oil of precipitation is recycled
Processing；
Step 3: solid-state oily sludge high pressure water crushes
Oil sludge particle after carburetion in step 2 is delivered in the hopper 5 of crush box, by the high pressure water at 5 top of hopper
Spray gun 6 is connect with high pressure washer, starts high pressure washer, carries out high pressure water crushing to the oil sludge particle in hopper 5,
Smashed liquid oily sludge is delivered to level-one cleaning device and is handled；
Step 4: liquid oily sludge pre-processes
Liquid oily sludge is filtered by the screen to filtrate device, the solid-state oily sludge or semisolid that filter out are contained
Greasy dirt repeats step 1 to step 3, and filtered liquid oily sludge is delivered to level-one cleaning device and is cleaned；
Step 5: level-one is cleaned
The liquid oily sludge of step 3 and step 4 is delivered in level-one cleaning device by delivery pump and carries out level-one
Cleaning, level-one cleaning device includes level-one rinse bath, level-one cleans ultrasonic Treatment of Sludge device, level-one cleans air-floating apparatus, medicament
Chemicals dosing plant receives oil pump and level-one and cleans oil-collecting device, oil sludge by delivery pump be delivered to level-one rinse bath top into mud
Mouthful, sludge slides into along level-one cleaning device along cloth mud plate, cleans ultrasonic Treatment of Sludge device, clearly by level-one in level-one rinse bath
Lotion and pneumatically supported collective effect, clean oily sludge, recycle to the crude oil of precipitation, the behaviour of level-one cleaning device
Making temperature is 90 DEG C；Pass through investment adding medicine and be aided with the quenched means for heating visbreaking, adjusts character and the row of solid grain subgroup
Column-shaped state makes the desorption of absorption oil and demulsification that its medium viscosity is big, is allowed to be suitble to the processing of different dehydration conditions；
Step 6: second level is cleaned
Mixing mud after level-one is cleaned is delivered to second level cleaning device and carries out second level cleaning, and second level cleaning device includes
Second level rinse bath, second level clean ultrasonic Treatment of Sludge device, second level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil
Pump and second level physics oil-collecting device, the mixing mud into second level cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Second level cleaning is carried out to oily sludge, recycles top oil slick, lower part mud is sent to three-level cleaning device；
Step 7: three-level is cleaned
Mixing mud after second level is cleaned is delivered to three-level cleaning device and carries out three-level cleaning, and three-level cleaning device includes
Three-level rinse bath, three-level clean ultrasonic Treatment of Sludge device, three-level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil
Pump and three-level physics oil-collecting device, the mixing mud into three-level cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Three-level cleaning is carried out to oily sludge, recycles top oil slick, lower part mud is sent to level Four cleaning device；
Step 8: level Four is cleaned
Mixing mud after three-level is cleaned is delivered to level Four cleaning device and carries out level Four cleaning, and level Four cleaning device includes
Level Four rinse bath, level Four clean ultrasonic Treatment of Sludge device, level Four cleans air-floating apparatus, cleaning agent chemicals dosing plant, oxidant dosing
Device, receives oil pump and level Four physics oil-collecting device at elevator pump, and the mixing mud into level Four cleaning device passes through ultrasound, air bearing
And the collective effect of stirring, level Four cleaning is carried out to oily sludge, oxidant and flocculant are added after cleaning, and will mixing
Slurry transportation to Centrifugal treatment device is handled；
Step 9: dehydration
Mixing mud after level Four is cleaned is carried out dehydrating by Centrifugal treatment device, which is integrated with flocculant
Chemicals dosing plant, the sludge separated from Centrifugal treatment device, oil-containing≤2%, aqueous is 75%, can be by if you need to advanced treating
Screw conveyor send to advanced treatment apparatus and is further processed；
Step 10: grease recycles
Level-one rinse bath, second level rinse bath, three-level rinse bath and the oil slick on level Four rinse bath top are carried out by oil tank
Recycling, is recycled the oily wastewater isolated by water pot.
Embodiment two
Referring to Fig.1, a kind of process handling oil field oil sludge, the process are
Step 1: automatic feed
Since various regions oily sludge is from a wealth of sources, main group becomes crude oil, water and solid particle, wherein also big containing part
Block material, solid refuse etc..Such as the geographical location of Liaohe Oil Field, the four seasons temperature difference is larger, and summer high temperature makes oily sludge Central Plains
Oil is precipitated, and forms oil slick, more liquid, the solids particles precipitate in mud has between solid and oil slick in the bottom of storage basin
Water-bearing layer；After autumn air temperature reduces, upper layer oil slick is made to condense to form oil cap, with the reduction of temperature, sludge mobility weakens, until
Winter frost.So to consider the charging of liquid sludge and solid semisolid sludge in oily sludge transhipment charging.Liquid contains
Greasy dirt transports to the feed inlet of pretreatment unit by pneumatic diaphragm pump or Pulp pump；Solid-state and semisolid oily sludge pass through bucket
Formula sludge lifting machine or screw conveyor are sent into buried quenched tank and carry out modifier treatment, and wherein solid-state or semisolid oily sludge is grasped
Making temperature is room temperature, and liquid oily sludge operation temperature is 85 DEG C；
Step 2: modifier treatment
By adding medicament and being aided with the quenched means such as heating visbreaking, the character and ordered state of adjustment solid grain subgroup,
Make absorption oil desorption that its medium viscosity is big and demulsification be allowed to be suitble to the pretreatment operation of different dehydration conditions, by bucket elevator or
Pneumatic diaphragm pump conveying come oil sludge enter buried tank be diluted, heat, stirring, dosing and sufficiently it is quenched, mixing go forward side by side
The preliminary demulsification of row, broken glue, adjustment temperature is 85 DEG C, longer in view of the single prizing body mixed liquor residence time, therefore using three sets of tune
The mode of matter tank quenched charging in turn shortens the residence time of sludge in technique；
Step 3: pretreatment
The feed inlet of sludge pretreatment device, pretreatment dress are initially entered by the oily sludge that automatic feed pump conveying comes
It sets including pretreatment unit slot, sludge sorter, pre-process ultrasonic Treatment of Sludge device, pretreatment air-floating apparatus, demulsifier dosing
Device receives oil pump and pretreatment oil-collecting device, and oily sludge is at feed inlet through the runner of sludge sorter and being total to for sieve plate
Same-action, the sludge that bulk coalesces together are broken up by the rotation that sludge sorts runner, and 2 centimetres of particle is greater than in sludge
It is sorted runner to promote in the bulk materials collecting box of pretreatment unit side, the sludge less than 2 centimetres passes through sludge separating sieve
The sieve pore of plate enters sludge pretreatment slot, sorts runner and sieve plate collective effect by oily sludge, realizes the miscellaneous of oily sludge
Object removal, fibre object crushes, evenly dispersed.Entered in pretreatment tank by the oily sludge of sieve plate along cloth mud plate, by slot
Ultrasonic Treatment of Sludge device and add the interaction of demulsifier, promote crude oil to separate from solid particles surface, pass through air bearing pipe
Rising bubble, so that crude oil is floated, recovery section crude oil, pretreatment operation temperature be 90 DEG C, addition medicament be demulsifier；
Step 4: level-one is cleaned
Oily sludge after pretreatment is delivered to level-one cleaning dress by the pump connecting with the perforated pipe of lower part in treatment trough
Interior progress level-one cleaning is set, level-one cleaning device includes level-one rinse bath, the ultrasonic Treatment of Sludge device of level-one cleaning, level-one purgative gas
Floating device, medicament agent chemicals dosing plant, receipts oil pump and level-one clean oil-collecting device, and oil sludge passes through delivery pump level-one rinse bath top
Mud inlet, sludge slides into along level-one cleaning device along cloth mud plate, passes through ultrasonic Treatment of Sludge device, cleaning in level-one rinse bath
Agent and pneumatically supported collective effect, clean oily sludge, recycle to the crude oil of precipitation, the operation of level-one cleaning device
Temperature is 90 DEG C, and addition medicament is degreaser；
Step 5: second level is cleaned
Mixing mud after level-one is cleaned is delivered to second level cleaning device and carries out second level cleaning, and second level cleaning device includes
Second level rinse bath, second level clean ultrasonic Treatment of Sludge device, second level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil
Pump and second level physics oil-collecting device, the mixing mud into second level cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Second level cleaning is carried out to oily sludge, recycles top oil slick, lower part mud is sent to three-level cleaning device, second level cleaning device
Operation temperature is 90 DEG C, and addition medicament is cleaning agent；
Step 6: three-level is cleaned
Mixing mud after second level is cleaned is delivered to three-level cleaning device and carries out three-level cleaning, and three-level cleaning device includes
Three-level rinse bath, three-level clean ultrasonic Treatment of Sludge device, three-level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil
Pump and three-level physics oil-collecting device, the mixing mud into three-level cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Three-level cleaning is carried out to oily sludge, recycles top oil slick, lower part mud is sent to level Four cleaning device, three-level cleaning device
Operation temperature is 85 DEG C, and addition medicament is cleaning agent；
Step 7: level Four is cleaned
Mixing mud after three-level is cleaned is delivered to level Four cleaning device and carries out level Four cleaning, and level Four cleaning device includes
Level Four rinse bath, level Four clean ultrasonic Treatment of Sludge device, level Four cleaning air-floating apparatus, oxidant chemicals dosing plant, elevator pump, receive oil
Pump and level Four physics oil-collecting device, the mixing mud into level Four cleaning device pass through ultrasound, the collective effect of air bearing and stirring,
Level Four cleaning is carried out to oily sludge, oxidant and flocculant are added after cleaning, and mixing mud is delivered at centrifugation
Reason device is handled, and the operation temperature of level Four cleaning device is 80 DEG C, and addition medicament is oxidant；
Step 8: centrifugal treating
Mixing mud after level Four is cleaned is carried out dehydrating by Centrifugal treatment device, and centrifugal treating sled includes two-phase
Centrifuge, flocculant chemicals dosing plant and static mixer, the sled are integrated with flocculant chemicals dosing plant, separate from centrifuge
Sludge, oil-containing≤2%, aqueous is 75%, if you need to advanced treating, can be sent by screw conveyor to advanced treatment apparatus further
Reason, wherein two-phase centrifuge is decanter centrifuge, and operation temperature is 62 DEG C, and addition medicament is flocculant；
Step 9: grease recycles
Sled is stored by grease and carries out grease recycling, and pretreatment unit, level-one rinse bath, second level are cleaned by oil tank
The oil slick of slot, three-level rinse bath and level Four rinse bath top is recycled, and is recycled by the oily wastewater that water pot is isolated
It utilizes.
When ultrasonic wave is propagated in liquid medium, not only there is cavitation, but also have mechanical agitation and thermal effect
It answers.It is mainly manifested in following aspect:
1, ultrasonic cavitation
(1) microbubble being present in liquid vibrates under the action of sound field, and when acoustic pressure reaches certain value, bubble will be after
Continuous to become larger, then closure, the impact water wave energy generated in bubble closure generate the pressure of thousands of a atmospheric pressure around it suddenly
Power destroys insoluble pollutant and is dispersed in them in cleaning solution.
(2) vibrated cleans the surface of solids, and pollution layer is made to fall off.
(3) cavitation bubble itself will occur during the shaking process along with a series of second order phenomenons, such as radiate torsion.Radiation
Torsion acts on liquid itself in uniform liquid, so as to cause liquid circulation itself, becomes acoustic streaming.Micro- acoustic streaming can make to vibrate
Bubble surface is in very high velocity gradient and viscous stress, it is sufficient to surface of solids dirt be made to damage and fall off.
(4) ultrasonic cavitation generated high-speed micro-jet on solid and liquid surface can remove or slacken boundary dirt
Layer increases stirring action, accelerates the dissolution of soluble dirt, strengthen the cleaning action of chemical.
2, mechanical agitation
Ultrasonic wave is the mode of propagation of mechanical energy, related with wave process, can generate the effect of vibration of linear alternation, is surpassed
When sound wave is propagated in a liquid, although particle displacement amplitude very little, particle acceleration caused by ultrasound is very big, therefore works as
Ultrasonic wave can generate fierce and fast-changing mechanical movement when acting on liquid.
3, fuel factor
Ultrasonic wave is propagated in medium, and vibrational energy is constantly changed into thermal energy by medium absorption and makes medium temperature liter
It is high.The energy of absorption can increase the office when bulk temperature of medium, the local temperature outside boundary and cavitation form shock wave at wavefront
Portion's temperature etc..Oily sludge enters ultrasonic processing apparatus, and the ultrasonic wave generated through high-frequency vibration makes around the solid particle in water
The crude oil of cladding forms bulky grain oil slick and floats.
Ultrasonic wave refers to that sound wave of the frequency higher than 20kHz can generate a system when the ultrasonic wave of some strength passes through media
The physics of column, chemical effect.Because wavelength is that 10 ~ 0.015cm(is equivalent to 15kHz to 10MHz to ultrasound in a liquid), much greatly
In the size of molecule, and with the cavitation bubble that is generated in liquid collapse go out (collapse) have substantial connection, power resources
It is acoustic cavitation (sound cavitation).When the ultrasonic wave of sufficient intensity passes through liquid, when the acoustic pressure of sound wave negative pressure half period
When amplitude is more than liquid internal static pressure, the micro-bubble (cavitation nucleus) being present in liquid will be increased rapidly, mutually then
In the sound wave positive pressure phase come bubble again adiabatic compression and collapse and go out, generate very short strong pressure pulses collapsing moment of going out, bubble week
It encloses short space and forms hot localised points (hotspot), temperature is up to 5000K, and pressure reaches 500atm, after last microseconds,
The hot spot cools down therewith, and cooling rate reaches 109k/s, with powerful shock wave (to homogeneous liquid medium) and speed per hour up to 400km's
Jet stream (to heterogeneous liquid medium).When ultrasonic wave is by the fluid media (medium) that has oil or fat particles, elaioleucite therein starts and is situated between
Matter is vibrated together, but since particle of different sizes has different vibration velocities, elaioleucite will collide mutually, be bonded, volume and
Weight increases.Then, it cannot can only make random movement with ultrasonic vibration since particle becomes larger, continue collision, glue
It closes, become larger, finally float, form oil slick.
Air bearing selecting technology is more tiny to partial size in liquid greasy filth by the dissolved air water containing micro-bubble of air bearing generation
Oil droplet carries out further FLOTATION SEPARATION, to achieve the purpose that separation oil.
The centrifugal separation equipment of embodiment two uses decanter centrifuge, and decanter centrifuge is a kind of horizontal screw unloading, company
The precipitation apparatus of continuous operation, its working principle is that: rotary drum and spiral are rotated with certain differential same-directional high-speed, and material is connected by feed pipe
It is continuous to introduce conveying spiral inner cylinder, rotary drum is entered after acceleration, under effect of centrifugal force, heavier solid formation is deposited on rotatory drum wall
Form sediment layer.The solid formation of deposition is continuously pushed into rotary drum tapered end by conveying spiral, through slag-drip opening discharge machine outside.It is relatively light
Liquid phase object then form internal layer pendular ring, rotary drum is continuously overflowed by rotary drum big end overflow port, through leakage fluid dram discharge machine outside.This function exists
Under full-speed operation, continuous feed, separation, washing and discharging.With compact-sized, continuous operation, smooth running, it is adaptable,
The features such as production capacity is big, easy to maintenance.
The package unit of embodiment two is divided into ten processing units, including a set of automatic feeder, three sets it is buried
Quenched sled, four sets of sludge cleaning sledges, a set of grease storage sled and a set of adroit sled of centrifugation, each skid body is having a size of 8 meters × 2.8 meters
× 2.6 meters, the weight of each prizing body is about 6.5t--8t.Liquid oily sludge feed pump uses Roots's oil pump, diaphragm pump or slag
Stock pump, the heat preservation of whole set process pipeline peripheral hardware prevent thermal losses and operator's high temperature from scalding, motor manually-operated gate in technique
Liner polytetrafluoro spool is selected, damage of the silt to valve body is reduced, each prizing body needs to set ladder at worker's maintenance and maintenance and enclose
Column, air bearing use roots blower air bearing network management.
Claims (3)
1. a kind of process for handling oil field oil sludge, it is characterised in that: the process are as follows:
Step 1: solid-state oily sludge screens
Solid-state oily sludge is broken up by sludge sorting unit, the solid-state sump oil clod after breaing up passes through vibrating screener
It is screened, the particle in sludge greater than 2 centimetres is delivered to sludge sorting unit and breaks up again, sludge of the particle less than 2 centimetres
Block is to be processed in oil dissolving tank by being delivered to, and during vibration screening, stone and fiber sundries are sorted in collecting box；
Step 2: solid-state oily sludge dry blowing vapo(u)rizing oil
The ring cavity for being delivered to oil dissolving tank by screw feeding machine no more than 1 centimetre of oil sludge particle that vibrating screener is sifted out
It sieves in column (2), after ring cavity sieve column (2) fills oil sludge particle, ring cavity is sieved into the dry saturated steam spray head (3) in column (2) and was equipped with
The steam boiler of hot device connects, and starting steam boiler carries out carburetion, and wherein the temperature of dry saturated steam is 250 DEG C -300 DEG C, precipitation
Oil is recycled；
Step 3: solid-state oily sludge high pressure water crushes
Oil sludge particle after carburetion in step 2 is delivered in the hopper (5) of crush box, by the high pressure water at the top of hopper (5)
Spray gun (6) is connect with high pressure washer, starts high pressure washer, carries out high pressure water to the oil sludge particle in hopper (5)
It crushes, smashed liquid oily sludge is delivered to level-one cleaning device and is handled；
Step 4: liquid oily sludge pre-processes
Liquid oily sludge is filtered by the screen to filtrate device, the solid-state oily sludge or semisolid that filter out are contained into greasy dirt
Mud repeats step 1 to step 3, and filtered liquid oily sludge is delivered to level-one cleaning device and is cleaned；
Step 5: level-one is cleaned
The liquid oily sludge of step 3 and step 4 is delivered to progress level-one cleaning in level-one cleaning device by delivery pump,
Level-one cleaning device includes level-one rinse bath, level-one cleans ultrasonic Treatment of Sludge device, level-one cleans air-floating apparatus, medicament dosing dress
It sets, receive oil pump and level-one cleaning oil-collecting device, oil sludge is delivered to the mud inlet on level-one rinse bath top, sludge by delivery pump
Slid into along level-one cleaning device along cloth mud plate, in level-one rinse bath by level-one cleaning ultrasound Treatment of Sludge device, cleaning agent and
Pneumatically supported collective effect, cleans oily sludge, recycles to the crude oil of precipitation, the operation temperature of level-one cleaning device
It is 90 DEG C；Pass through investment adding medicine and be aided with the quenched means for heating visbreaking, adjusts the character and ordered state of solid grain subgroup,
Make the desorption of absorption oil and demulsification that its medium viscosity is big, is allowed to be suitble to the processing of different dehydration conditions；
Step 6: second level is cleaned
Mixing mud after level-one is cleaned is delivered to second level cleaning device and carries out second level cleaning, and second level cleaning device includes second level
Rinse bath, second level clean ultrasonic Treatment of Sludge device, second level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil pump and
Second level physics oil-collecting device, into second level cleaning device mixing mud by ultrasound, the collective effect of air bearing and stirring, to containing
Greasy dirt carries out second level cleaning, recycles top oil slick, and lower part mud is sent to three-level cleaning device；
Step 7: three-level is cleaned
Mixing mud after second level is cleaned is delivered to three-level cleaning device and carries out three-level cleaning, and three-level cleaning device includes three-level
Rinse bath, three-level clean ultrasonic Treatment of Sludge device, three-level cleaning air-floating apparatus, cleaning agent chemicals dosing plant, elevator pump, receive oil pump and
Three-level physics oil-collecting device, into three-level cleaning device mixing mud by ultrasound, the collective effect of air bearing and stirring, to containing
Greasy dirt carries out three-level cleaning, recycles top oil slick, and lower part mud is sent to level Four cleaning device；
Step 8: level Four is cleaned
Mixing mud after three-level is cleaned is delivered to level Four cleaning device and carries out level Four cleaning, and level Four cleaning device includes level Four
Rinse bath, level Four clean ultrasonic Treatment of Sludge device, level Four cleaning air-floating apparatus, oxidant chemicals dosing plant, elevator pump, receive oil pump and
Level Four physics oil-collecting device, into level Four cleaning device mixing mud by ultrasound, the collective effect of air bearing and stirring, to containing
Greasy dirt carries out level Four cleaning, oxidant and flocculant is added after cleaning, and mixing mud is delivered to centrifugal treating dress
It sets and is handled；
Step 9: dehydration
Mixing mud after level Four is cleaned is carried out dehydrating by Centrifugal treatment device, which is integrated with flocculant dosing
Device, the sludge separated from Centrifugal treatment device, oil-containing≤2%, aqueous is 75%, if you need to advanced treating, by spiral transferring
It send machine to send to advanced treatment apparatus to be further processed；
Step 10: grease recycles
Level-one rinse bath, second level rinse bath, three-level rinse bath and the oil slick on level Four rinse bath top are recycled by oil tank,
The oily wastewater isolated is recycled by water pot.
2. a kind of process for handling oil field oil sludge according to claim 1, it is characterised in that: in the step 2
To realize that the oil dissolving tank of sump oil sludge treatment technology includes cabinet (1), uniformly distributed ring cavity sieve column (2) and dry saturated steam spray head (3), dry blowing
Vapour spray head (3) is located at the inside of ring cavity sieve column (2), and the sieve diameter that ring cavity sieves column (2) inside and outside wall is 5 millimeters, and ring cavity sieves column (2)
Bottom, which is equipped with, may be reversed discharging cover board.
3. a kind of process for handling oil field oil sludge according to claim 1, it is characterised in that: in the step 3
To realize that the crush box of sump oil sludge treatment technology includes shell (4), uniformly distributed hopper (5) and high-pressure water spraying gun (6), high pressure water jets
Rifle (6) is located at the top of hopper (5), and the two side walls of hopper (5) are equipped with uniformly distributed circular hole (7).
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| CN113060884B (en) * | 2021-03-25 | 2022-11-25 | 中汇金源（北京）科技发展有限公司 | Petrochemical oily sewage and oil sludge purifying and recycling system |
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