CN106635428A - Method and device for extracting oils from oil-containing spent bleaching clay dregs by water slurry heating flash method - Google Patents
Method and device for extracting oils from oil-containing spent bleaching clay dregs by water slurry heating flash method Download PDFInfo
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- CN106635428A CN106635428A CN201710103926.7A CN201710103926A CN106635428A CN 106635428 A CN106635428 A CN 106635428A CN 201710103926 A CN201710103926 A CN 201710103926A CN 106635428 A CN106635428 A CN 106635428A
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- 239000004927 clay Substances 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 239000002002 slurry Substances 0.000 title claims abstract description 32
- 239000003921 oil Substances 0.000 title abstract description 93
- 238000004061 bleaching Methods 0.000 title abstract description 35
- 238000009833 condensation Methods 0.000 claims abstract description 10
- 230000005494 condensation Effects 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000005485 electric heating Methods 0.000 claims abstract description 3
- 238000011084 recovery Methods 0.000 claims description 29
- 239000002351 wastewater Substances 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 19
- 239000000284 extract Substances 0.000 claims description 19
- 239000012071 phase Substances 0.000 claims description 16
- 238000004064 recycling Methods 0.000 claims description 16
- 238000007701 flash-distillation Methods 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 11
- 241001417501 Lobotidae Species 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000004537 pulping Methods 0.000 claims description 4
- 230000009172 bursting Effects 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 235000021050 feed intake Nutrition 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 description 83
- 239000002904 solvent Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000010721 machine oil Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- -1 press filtration Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- CMXPERZAMAQXSF-UHFFFAOYSA-M sodium;1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate;1,8-dihydroxyanthracene-9,10-dione Chemical compound [Na+].O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=CC=C2O.CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC CMXPERZAMAQXSF-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
- C11B13/04—Recovery of fats, fatty oils or fatty acids from waste materials from spent adsorption materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/006—Distillation of hydrocarbon oils of waste oils other than lubricating oils, e.g. PCB's containing oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/06—Vacuum distillation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a method for extracting oils from oil-containing spent bleaching clay dregs. The method includes sequentially adding the oil-containing spent bleaching clay dregs and water into a stirring kettle with an electric heating jacket, and heating to stir to obtain uniform slurry; through a flash method, enabling gasified vapor to disperse into bleaching clay pores under the action of self-pressure to desorb the oils adsorbed by the bleaching clay, and separating oil gas and water vapor through a segmented condensation method. The method has the advantages that the method is free of externally added chemical reagents in a whole extraction process, hardly destroys a physical structure of the bleaching clay and enables the recovered oils to be free of new impurities; through testing, the deoiling rate of the spent bleaching clay in the method is as high as 95%. The invention further discloses a corresponding device for extracting the oils from the oil-containing spent bleaching clay dregs by the water slurry heating flash method. The device comprises a slurrying and heating system, a deoiling system, a recovering system and a vacuum-pumping system. The device is simple in structure, high in operability and continuous in production.
Description
Technical field
The present invention relates to a kind of Oil Recovery method in oil-containing spent bleaching clay, more particularly to a kind of Refinery Oil subtractive process
The method of Oil Recovery in the oil-containing spent bleaching clay that all kinds of mineral oil spent bleaching clays for producing and edible oil processing factory produce；The present invention
Also relate to realize the device of the de-oiling method.
Background technology
In oil refining and petrochemical industry production, clay-filtered removed in product not using the atlapulgite of high adsorption capacity
A kind of reliable process of good impurity, such as lubricating oil carclazyte post-refining, paraffin carclazyte decolourize.Although carclazyte has to polar substances
Preferable absorption property, but carclazyte has certain absorption limit, and polar substances to be adsorbed are reached after saturation, that is, lose absorption
Ability, thereby produces substantial amounts of oil-containing spent bleaching clay.
Oil-containing spent bleaching clay typically contains about 30%～50% oil or wax, so, abandon or fill spent bleaching clay and be actually
Very big waste in a kind of resource, while also polluting environment.Oil or wax are reclaimed from spent bleaching clay, and by appropriate method
Regeneration spent bleaching clay, is not only able to make the resource of carclazyte to obtain repetitive cycling utilization, and oil plant, chemical plant, oil are solved well
The waste sludge discharge problem of the enterprises such as fat processing factory, and the oils such as lubricating oil therein can be extracted and turn waste into wealth, this
For environmental protection, the utilization rate of raising oil, reduction consumption of petroleum have important theoretical and realistic meaning, economy is capable of achieving
Benefit social benefit and environmental benefit multi-win.
Oil product is reclaimed from oil-containing spent clay has many documents and patent to be related to.CN101700492A discloses a kind of petrochemical industry and gives up
Carclazyte extracts the method that petrol and diesel oil reclaims carclazyte, and its main technical schemes is：Petrochemical industry spent bleaching clay carries oil, press filtration, soap through solvent
The means such as change, activation, centrifugal dehydration, drying, crushing, finally obtained the atlapulgite of petrol and diesel oil and regeneration.
CN103394339A discloses a kind of method of regeneration spent bleaching clay, using a kind of non-polar solven and polar solvent and both
Mixed solvent is mixed extraction solvent with spent bleaching clay in the presence of ultrasonic wave as extraction solvent, is desorbed, is extracted
The oil adsorbed in spent bleaching clay, finally washes with water, filters, dried carclazyte, carclazyte surface recovery, activity is able to again
Raw, the oil of spent bleaching clay absorption is reclaimed.CN104801266A discloses a kind of spent bleaching clay novel technique for harmless treatment, and being will be useless
Carclazyte is added in solvent naphtha, is processed using level Four centrifuging process, and the carclazyte drying after process obtains innoxious carclazyte.Should
The oil adsorbed in spent bleaching clay can be kept completely separate out by method.Machine oil content is zero in carclazyte after after testing the method is processed,
The machine oil of leaching is recyclable, and carclazyte drying can be used as the raw material of aerated bricks.However, all there is behaviour in above-mentioned various schemes
Make complicated, need to introduce solvent, acid, alkali etc., the destruction of dialogue soil structure is serious, and solvent, acid, the alkali of new addition are mixed with oil recovery
Deng oil quality is poor.
The content of the invention
The purpose of the present invention is for problem present in existing spent bleaching clay de-oiling technology, there is provided a kind of water slurry heating flash evaporation
The method that method extracts oil product in oily waste water clay dregs；
It is a further object of the present invention to provide a kind of device for realizing said method --- water slurry heating flash evaporation method extracts oily waste water
The device of oil product in clay dregs.
First, the method that water slurry heating flash evaporation method extracts oil product in oily waste water clay dregs
The method that water slurry heating flash evaporation method of the present invention extracts oil product in oily waste water clay dregs, comprises the following steps that：
（1）Slurrying：Oily waste water clay dregs, water are sequentially added in the stirred tank with electric heating cover, 200～300 DEG C are warming up to,
Uniform slurry is made in stirring；Water feeds intake volume ratio for 1 with oily waste water clay dregs:（0.1～0.15）；Stir speed (S.S.) is 100
～200rpm, 20～40min of mixing time；Stirred tank pressure ＜ 5MPa, charge reaches the 1/2～2/3 of kettle volume.
（2）Flash distillation：By slurry from stirred tank suction flash column, vacuumizing makes flash column vacuum in 60～80KPa；Dodge
Steam the outlet valve of water, oil in tower slurry with gas phase from the top of flash column to extract out.
（3）Segmentation condensation：The gas phase that flash distillation tower top is extracted out sends into Oil Recovery tank Jing after oil separating condenser condensation；Oil is cold
The fixed gas of condenser is admitted to condensate moisture device and is condensed into aqueous water into moisture recycling can；The fixed gas of condensate moisture device is by machine
Tool vacuum pumped is discharged；The condensed water that moisture recycling can is reclaimed returns stirred tank slurrying again.
（4）Slag dumping：Repeat step（1）、（2）、（3）3～5 times, flash column bursting vacuum；The outlet valve of flash distillation tower bottom is unloaded
Go out body refuse, next round circulation is started after the completion of slag dumping.Body refuse is at 100～150 DEG C as final process after mummification 1～3 hour
Residue.
2nd, water slurry heating flash evaporation method extracts the device of oil product in oily waste water clay dregs
Water slurry heating flash evaporation method of the present invention extracts the device of oil product in oily waste water clay dregs, including slurrying heating system, de-oiling system
System, recovery system and pumped vacuum systems, wherein：
The slurrying heating system is the stirred tank of electrified heating set, and stirred tank top is provided with charge door, and stirred tank bottom is provided with
Outlet valve, the outlet valve connects the inlet valve of flash column by pipeline；
The de-oiling system includes vacuum flasher；Vacuum flasher top is provided with inlet valve, and bottom is provided with blow valve；Flash column
Top be provided with gas phase outlet valve；Vacuum flasher is connected by oil separating condenser and condensate moisture device with pumped vacuum systems；
The recovery system includes oil recovery system and water reclamation system；Oil recovery system includes that oil separating condenser and oil connect
Closed cans；The input of oil separating condenser connects the gas phase outlet valve of flash distillation tower top, the liquid phase output connection oil of oil separating condenser
Recycling can, the gas phase outlet of oil separating condenser is divided to connect the input of condensate moisture device；Moisture recovery system includes that moisture is cold
Condenser and moisture recycling can；The liquid phase output connection moisture recycling can of condensate moisture device；The fixed gas of condensate moisture device is by machine
Tool vacuum pumped is discharged；Moisture reclaims pot bottom and connects stirred tank by valve and pipeline.
Flash column is two vacuum flashers of connection arranged side by side, is easy to be used alternatingly.
The principle of the present invention：Spent bleaching clay slag mix with water after heating stirring, the steam of gasification from pressure in the case where acting on to carclazyte
Pore diffusion, the oil of bleaching earth adsorption is deviate from.Slurry is entered after flash column, and because pressure is reduced suddenly, oil gas is made clear one's meaning and position rapidly
Gasify in native surface or hole, and Oil recovery system is entered in the case where steam is carried；Recovery system is using the larger boiling point of oil, water
Difference, is respectively successively reclaimed oil, water condensation with two condensers, and the water circulation of recovery returns pulping system.According to flash distillation tankage size,
When body refuse builds up to tank volume 1/2～2/3 in tank, flash tank vacuum breaker opens the blow valve of tank bottom, carclazyte is drawn off dry
It is dry, obtain the clay dregs of hardly oil-containing.
Advantages of the present invention：By water slurry heating flash evaporation method so that the oil, water in spent bleaching clay to mix gas phase in the form of with
Clay dregs are separated, then are separated oil gas, steam by the method for condensing, thus without additional change in whole extraction process
Work reagent, the physical arrangement destruction to carclazyte is relatively small, while so that reclaiming in oil product without the new impurity for introducing.Jing is examined
Survey, the method may be up to more than 95% to the de-oiling rate of spent bleaching clay；Moisture content is less in oil recovery.In addition, the condensed water for reclaiming is followed
Ring reduces quantity of wastewater effluent and oil product loss to stirred tank slurrying.
Description of the drawings
Fig. 1 is the structural representation that water slurry heating flash evaporation method extracts oil product device in oily waste water clay dregs.
Specific embodiment
The method and apparatus that oil product in oily waste water clay dregs is extracted to the present invention below by specific embodiment makees further
Explanation.
Embodiment 1
1st, oil product extraction element
With reference to Fig. 1, water slurry heating flash evaporation method extracts the device of oil product in oily waste water clay dregs, including slurrying heating system, de-oiling
System, recovery system and pumped vacuum systems；Wherein：
Slurrying heating system is the stirred tank C-1 of electrified heating set（Stainless steel, 100 liters, 0～300 DEG C, 5Mpa, conduction oil adds
Heat, pressure ＜ 5MPa）, charge door arranged at stirred tank top, and bottom bottom is provided with discharging opening and control valve V1；The discharging opening and control
Valve V-1 connects the charging aperture and control valve V-2, V-4 of flash column by pipeline；
De-oiling system includes two vacuum flasher C-2, C-3 for connecting side by side（Stainless steel, 100 liters）, for blocked operation.Very
Empty flash column top is provided with charging aperture and control valve V-2, V-4, and bottom is provided with unloads cinder notch and control valve V-6, V-7；Flash column
Top is provided with gas phase outlet valve V-3, V-5.Vacuum flasher C-2, C-3 are vented vacuum breaker by valve V-10, V-11.
Recovery system includes oil recovery system and water reclamation system.Oil recovery system includes oil separating condenser E-1 and oil
Divide recycling can C-4（Stainless steel, 100 liters）；The input of oil separating condenser E-1 connects gas phase outlet valve V-3, V- of flash distillation tower top
5, oil separating condenser E-1（Stainless steel, shell and tube, the m of heat exchange area 1～2,0～250 DEG C of temperature in pipe manages outer temperature 0～100
℃.）Liquid phase output connection Oil recovery tank C-4, oil separating condenser gas phase outlet connection condensate moisture device E-2 it is defeated
Enter end.Moisture recovery system includes condensate moisture device E-2（Stainless steel, shell and tube, the m of heat exchange area 1～2, the interior temperature 0 of pipe～
250 DEG C, manage outer 0～100 DEG C of temperature.）With moisture recycling can C-5（Stainless steel, 100 liters）；The liquid phase output of condensate moisture device E-2
End connection moisture recycling can C-5；The fixed gas of condensate moisture device is discharged by mechanical vacuum pumped；In moisture recycling can C-5
Condensed water Jing valves V-9 returns stirred tank C-1 slurrying again.
2nd, oil product extracting method
Spent bleaching clay slag raw material：The used oil under certain 4 S auto shop is changed is collected, 4% atlapulgite is added, constant temperature is stirred at 130 DEG C
30min is mixed, with Vacuum filtration device machine oil is filtered, filter residue is the spent bleaching clay containing mineral oil, determines this spent bleaching clay oil content
35.2%, smash this oil-containing spent bleaching clay to pieces standby.
Oil product extraction process
Slurrying：Spent bleaching clay slag 9kg, 60L water is sequentially added in stirred tank C-1,280 DEG C is warming up to, stirring（200rpm,
30min）Make uniform slurry；
Flash distillation：By slurry from stirred tank suction flash column C-1, pumped vacuum systems is opened, make flash column vacuum in 70KPa；
Outlet valve of the water, oil in flash column slurry with gas phase from the top of flash column is extracted out.
Segmentation condensation：The gas phase that flash distillation tower top is extracted out sends into Oil Recovery tank Jing after oil separating condenser E-1 condensations；Oil is cold
The fixed gas of condenser is admitted to condensate moisture device and is condensed into aqueous water into moisture recycling can；The fixed gas of condensate moisture device is by machine
Tool vacuum pumped is discharged；The condensed water that moisture recycling can is reclaimed returns stirred tank C-1 slurrying again.
Slag dumping：Repeat step（1）、（2）、（3）3～5 times, flash column bursting vacuum；Open flash column bottom discharge valve to unload
Go out body refuse, next round circulation is started after the completion of slag dumping.According to flash distillation tankage size, treat that body refuse builds up to tank volume 1/2～2/3 in tank
When, charging is switched to into another flash tank C-2.After the flash tank vacuum breaker for switching out, the blow valve at flash tank C-1 bottoms is opened
V6, carclazyte is drawn off into drying, obtain the clay dregs of hardly oil-containing.
As a result：Carclazyte residual oil content 4.8%, Oil Recovery rate 86.4%.
Embodiment two
1st, oil product extraction element：With embodiment 1.
2nd, oil product extracting method
Spent bleaching clay slag raw material：The spent bleaching clay produced after certain grain and oil company soybean oil decolorization, measures oil-containing 20.7%, and aqueous 2.8%.
Extraction process：250 DEG C are stirred and heated to, other are with embodiment 1.
As a result：Carclazyte residual oil content 2.3%, Oil Recovery rate 88.9%.
Claims (9)
1. the method that water slurry heating flash evaporation method extracts oil product in oily waste water clay dregs, comprises the following steps that：
（1）Slurrying：Oily waste water clay dregs, water are sequentially added in the stirred tank with electric heating cover, 200～300 DEG C are warming up to,
Uniform slurry is made in stirring；
（2）Flash distillation：By slurry from stirred tank suction flash column, vacuumizing makes flash column vacuum in 60～80KPa；Flash column
Outlet valve of the water, oil in slurry with gas phase from the top of flash column is extracted out；
（3）Segmentation condensation：The gas phase that flash distillation tower top is extracted out sends into Oil Recovery tank Jing after oil separating condenser condensation；Oil separating condenser
Fixed gas be admitted to condensate moisture device and be condensed into aqueous water into moisture recycling can；
（4）Slag dumping：Repeat step（1）、（2）、（3）3～5 times, flash column bursting vacuum；The outlet valve of flash distillation tower bottom unloads mud extraction
Slag, starts next round circulation after the completion of disposing slag.
2. the method that water slurry heating flash evaporation method as claimed in claim 1 extracts oil product in oily waste water clay dregs, it is characterised in that：Step
Suddenly（1）Pulping process in, water and oily waste water clay dregs feed intake volume ratio for 1:（0.1～0.15）.
3. the method that water slurry heating flash evaporation method as claimed in claim 1 extracts oil product in oily waste water clay dregs, it is characterised in that：Step
Suddenly（1）Pulping process in, stir speed (S.S.) be 100～200rpm, 20～40min of mixing time.
4. the method that water slurry heating flash evaporation method as claimed in claim 1 extracts oil product in oily waste water clay dregs, it is characterised in that：Step
Suddenly（1）Pulping process in, the pressure ＜ 5MPa of stirred tank, charge reaches the 1/2～2/3 of kettle volume.
5. the method that water slurry heating flash evaporation method as claimed in claim 1 extracts oil product in oily waste water clay dregs, it is characterised in that：Step
Suddenly（3）Segmentation condensation process in, the fixed gas of condensate moisture device is discharged by mechanical vacuum pumped.
6. the method that water slurry heating flash evaporation method as claimed in claim 1 extracts oil product in oily waste water clay dregs, it is characterised in that：Step
Suddenly（3）Segmentation condensation process in, moisture recycling can reclaim condensed water return stirred tank slurrying again.
7. realize that water slurry heating flash evaporation method as claimed in claim 1 extracts the device of oil product in oily waste water clay dregs, its feature exists
In：Including slurrying heating system, de-oiling system, recovery system and pumped vacuum systems；
The slurrying heating system is the stirred tank of electrified heating set, and stirred tank top is provided with charge door, and stirred tank bottom is provided with
Outlet valve, the outlet valve connects the inlet valve of flash column by pipeline；
The de-oiling system includes vacuum flasher；Vacuum flasher top is provided with inlet valve, and bottom is provided with blow valve；Flash column
Top be provided with gas phase outlet valve；Vacuum flasher is connected by oil separating condenser and condensate moisture device with pumped vacuum systems；
The recovery system includes oil recovery system and water reclamation system；Oil recovery system includes that oil separating condenser and oil connect
Closed cans；The input of oil separating condenser connects the gas phase outlet valve of flash distillation tower top, the liquid phase output connection oil of oil separating condenser
Recycling can, the gas phase outlet of oil separating condenser is divided to connect the input of condensate moisture device；Moisture recovery system includes that moisture is cold
Condenser and moisture recycling can；The liquid phase output connection moisture recycling can of condensate moisture device；The fixed gas of condensate moisture device is by machine
Tool vacuum pumped is discharged.
8. water slurry heating flash evaporation method as claimed in claim 1 extracts the device of oil product in oily waste water clay dregs, it is characterised in that：Dodge
Steam two vacuum flashers that tower is connection arranged side by side.
9. water slurry heating flash evaporation method as claimed in claim 1 extracts the device of oil product in oily waste water clay dregs, it is characterised in that：Water
Divide and reclaim pot bottom by valve and pipeline connection stirred tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103926.7A CN106635428A (en) | 2017-02-24 | 2017-02-24 | Method and device for extracting oils from oil-containing spent bleaching clay dregs by water slurry heating flash method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103926.7A CN106635428A (en) | 2017-02-24 | 2017-02-24 | Method and device for extracting oils from oil-containing spent bleaching clay dregs by water slurry heating flash method |
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| CN106635428A true CN106635428A (en) | 2017-05-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107189863A (en) * | 2017-07-03 | 2017-09-22 | 江苏恒茂再生能源有限公司 | A kind of spent bleaching clay nuisanceless disposal Processes and apparatus |
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| CN109701508A (en) * | 2019-02-19 | 2019-05-03 | 安徽国孚凤凰科技有限公司 | The device and its process of desorption and regeneration after a kind of absorption of adsorbent |
| CN111440636A (en) * | 2020-03-31 | 2020-07-24 | 鲁西化工集团股份有限公司硅化工分公司 | Heat conduction oil online regeneration and purification treatment system and treatment method |
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