CN109181739A - Oil sand separating method - Google Patents
Oil sand separating method Download PDFInfo
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- CN109181739A CN109181739A CN201811128632.0A CN201811128632A CN109181739A CN 109181739 A CN109181739 A CN 109181739A CN 201811128632 A CN201811128632 A CN 201811128632A CN 109181739 A CN109181739 A CN 109181739A
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- oil
- sand
- double solvents
- extractor
- pitch
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- 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
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Extraction Or Liquid Replacement (AREA)
- Working-Up Tar And Pitch (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a kind of oil sand separating methods, belong to oil sand separation technology field.This method is transported in extractor first by oil-sand raw material after crushing and drying；Oil-sand isolates the miscella of pitch and double solvents after the double solvents in extractor carries out extraction processing, is pumped into filter by mixing oil pump, is pumped into distillation still again after removing impurity, evaporates to obtain coal tar through distillation still, be pumped into asphalt oil tank.Become liquid circulation use after the condensation of double solvents gas.Then the mixed material in extractor is heated to 90-130 DEG C, and controls under conditions of vacuum degree is 2-3KPa and stirs, the double solvents in tailings is changed into gaseous state output, becomes liquid circulation use after the condensation of double solvents gas, then tailings is exported.Oil-sand is handled by specific double solvents and technological parameter in the separation process, the recovery rate of pitch is 97% or more in oil-sand, and pitch residual is less in separated tailings out.
Description
Technical field
The present invention relates to oil sand separation technology fields, and in particular to a kind of oil sand separating method.
Background technique
Oil-sand refers to the settling sand rich in bitumen, therefore also referred to as " tar sand ".Oil-sand be substantially a kind of pitch,
Husky, rich ore clay and water mixture, wherein bitumen content is 10~16% (Canada) or 22.54-33.72% (Indonesia),
The mineral such as husky and clay account for 60~85%, and remainder is water.
China is to occupy the 5th, the world in one of oil-sand ore resources country abundant of the world.Preresearch estimates China oil-sand has
Hundred billion tons, 10,000,000,000 tons of recoverable oil stock number or so.It is mainly distributed on Xinjiang, Qinghai, Tibet, Sichuan, Guizhou.In addition, wide
West, Zhejiang, the Inner Mongol are also distributed.China's oil-sand Prospective resources are 10,000,000,000 tons, it is contemplated that the year two thousand fifty, production capacity is up to year
Produce 18,000,000 tons.
Oil-sand is a kind of important supplement resource of petroleum resources, international petroleum demand is growing and oil price occupy it is high
In the case where not lower, the heavy oil asphalt resource being enriched in exploitation oil-sand has a vast market foreground and economic benefit.
Currently, existing oil-sand processing method mainly has in the world: thermokalite water surface activating agent washes method and steam assisted gravity
It rushes down oil process (SAGD), but both methods consumes a large amount of freshwater resources and natural gas resource, while all having that yield is low, cost
Height destroys groundwater resources and causes the problem of seriously polluting to environment.
As international petroleum demand is growing and oil price is constantly soaring, there are the research and development of oil-sand abstraction technique in China
Certain breakthrough, has surmounted U.S.'s laboratory centrifugal isolation technics eighties and has simply amplified, and also fails to be applied to industrialized production,
The specific requirement of state's laws regulation is not reached, production technology bottleneck problem does not solve, and lacks reliable running technology number
According to and technological parameter, technique is not perfect, and stabilization of equipment performance is poor, is unable to serialization industrialized production, can not apply daily output ten thousand tons
Above extensive oil-sand production.The most key, the cost accounting of no data support production can not quantify and embody project
Economic benefit, social benefit is not known where to begin more, therefore more difficult popularization and application.
Summary of the invention
For the shortcomings of the prior art, produced the purpose of the present invention is to provide a kind of oil sand industry metaplasia
Separation method extracts the bottleneck problem during industrial production this method solve oil-sand, passes through in separation process specific
Double solvents and technological parameter handle oil-sand, and the recovery rate of coal tar is 97% or more in oil-sand, separated tail out
In sand, pitch remains 0.33-0.85%.
To achieve the above object, the technical solution adopted in the present invention is as follows:
A kind of oil sand separating method, it is characterised in that: this method comprises the following steps:
(1) oil-sand raw material is transported in extractor after crushing and drying；
(2) oil-sand carries out extraction processing, pitch and tailings separation through the double solvents in extractor；The double solvents
Composition are as follows: petroleum ether 24.2-26wt.%, normal heptane 14.5-16wt.%, No. 120 solvent naphthas are surplus.
(3) oil-sand obtains mixed material after complex solvent extraction is handled, and pitch and double solvents therein are formed mixed
It closes oil and filter is pumped by mixing oil pump, be pumped into distillation still again after removing impurity, pitch and compound molten is isolated after distilling
Agent；Miscella output after, by extractor residual double solvents and tailings be heated to 90-130 DEG C, and control vacuum degree be 2-
Under conditions of 3KPa, the double solvents remained in extractor is changed into gaseous state and exports, and finally again exports tailings.
In above-mentioned steps (1), detailed process of the oil-sand feedstock transportation into extractor are as follows: oil-sand raw material is conveyed through conveyer
To pulverizer, being crushed to partial size is 10mm particle below；It is transported in drying machine through conveyer again, under the conditions of 50-65 DEG C
After drying and dehydrating, extractor is transported to by conveyer.
In above-mentioned steps (2), the temperature of the extraction processing is 50-65 DEG C, and the time is 50-120 minutes, and extraction processing exists
It is carried out under stirring condition.
In above-mentioned steps (2), the usage amount of double solvents is the 0.50-0.70wt.% of the weight of oil-sand raw material.
In above-mentioned steps (2), the extractor includes closed container, blender and heating layer；The heating layer is arranged in
The side and bottom surface of closed container are passed through steam or conduction oil in heating layer, by heating steam or conduction oil in extractor
Material heated；Blender is set in closed container and is stirred to the mixed material in extractor；The closed container
Top be equipped with vacuum pump interface, gas vent and colvent inlet；Vacuum pump interface is for connecting vacuum pump, to control extractor
Interior vacuum degree, vacuum pump connect condenser simultaneously；Gas vent and colvent inlet are respectively used to the output of double solvents gas
With the input of liquid double solvents；The bottom of closed container is equipped with tailings and exports and mix oil export.
The double solvents is placed in solvent circulating tank, by solvent pump after extracting out in solvent circulating tank, is entered via solvent
Mouth enters in extractor, after extracting to oil-sand, is input to distillation still after the miscella removal of impurities that double solvents and pitch are formed
It is interior, 90-130 DEG C is heated in distillation still, double solvents becomes gaseous state, and solvent is entered after condenser is condensed into liquid and is recycled
It is recycled in tank, remaining pitch is input to asphalt oil tank in distillation still；Remaining double solvents becomes gaseous state in extractor
Afterwards, it is exported by gas vent, after vacuum pump enters condenser, is become in liquids recovery to solvent circulating tank.
In above-mentioned steps (3), the oil-sand in extractor is after complex solvent extraction is handled, answering after oil to be mixed and heating
After the output of bonding solvent gas, remaining tailings is exported through conveyer, for building or comprehensively utilizing.In separated tailings out,
Coal tar remains 0.3-0.85%.
After the oil-sand raw material uses this method separation and Extraction, the recovery rate of pitch is 97% or more in oil-sand.
It design principle of the present invention and has the beneficial effect that:
1, the present invention is that oil-sand continuously separates production technology, and for the separation of oil-sand, the bitumen crude oil after separation reaches refining
Change and require, solve the problems, such as international raw oil market insufficient supply, tailings can be used for firing high-intensitive masonry or comprehensive utilization.
2, by the present invention in that with specific composition and the double solvents of content, in strict control extraction temperature and operating time
In the case where, realize the extraction and separation of oil-sand material asphalt oil and tailings.And further pass through structure design, the extraction of extractor
The control of temperature and vacuum degree etc. in device realizes that the difference of double solvents, coal tar and tailings in mixed material in extractor is defeated
Out.
3, the continuous separation production technology of oil-sand of the present invention has producing cost low, not by seasonal effect, whole year production
300 days or more.
4, oil-sand of the present invention continuously separates in production technology, 97% or more bitumen extraction rate (bituminous oil in oil-sand
22.54% calculates), tailings pitch remains within 0.33-0.85%.
5, oil-sand of the present invention continuously separates production technology, no exhaust gas, waste water and waste sludge discharge.
6, oil-sand of the present invention continuously separates production technology, and the construction period is short, can put into production within eight months.
Detailed description of the invention
Fig. 1 is extractor structural schematic diagram used in the present invention.
Fig. 2 is separation method flow diagram of the present invention.
Specific embodiment
For a further understanding of the present invention, present invention is described with reference to embodiments, but embodiment is only to this
The characteristics of invention and advantage are further elaborated, rather than limiting to the claimed invention.Present invention process parameter is in
Obtain there is very strong operability and feasibility after examination equipment experiment.
The present invention is oil sand separating method, and the structure of extractor used is as shown in Figure 1 in this method.The extractor includes close
Close container, blender and heating layer；The heating layer is arranged in the side and bottom surface of closed container, be passed through in heating layer steam or
Conduction oil, by adding steam or conduction oil to heat the material in extractor；Blender is set in closed container to extraction
Mixed material in device is stirred；The top of the closed container is equipped with vacuum pump interface, gas vent and colvent inlet；Very
Empty pump interface is for connecting vacuum pump, and to control the vacuum degree in extractor, vacuum pump connects condenser simultaneously；Gas vent and
Colvent inlet is respectively used to the output of double solvents gas and the input of liquid double solvents；The bottom of closed container is equipped with tailings
Outlet, closed container lower part is additionally provided with mixing oil export.
Embodiment 1:
The present embodiment oil sand separating method, process such as Fig. 2, specifically comprises the following steps:
(1) oil-sand raw material includes the mineral such as bitumen, sand and clay, water, (the Indonesia's oil of pitch oil content 22.54%
Sand)；Oil-sand raw material is transported to pulverizer through conveyer, and being crushed to partial size is 10mm particle below；It is transported to again through conveyer
In drying machine, under the conditions of 50-65 DEG C after drying and dehydrating, extractor is transported to by conveyer.
(2) oil-sand carries out extraction processing through the double solvents in extractor, and the double solvents is placed in solvent circulating tank,
By solvent pump after being extracted out in solvent circulating tank, enter in extractor via colvent inlet；The usage amount of double solvents is oil-sand
The 0.5wt.% of the weight of raw material.The temperature of extraction processing is 60 DEG C, and extraction time is 120 minutes, and extraction processing is in stirring bar
It is carried out under part.The composition of the double solvents are as follows: No. 120 solvent naphtha 60wt.%, petroleum ether 25.5wt.%, normal heptane
14.5wt.%.
(3) oil-sand obtains in mixed material after complex solvent extraction is handled, and pitch and part double solvents are formed mixed
Oil is closed, filter is pumped by mixing oil pump, is pumped into distillation still again after removing impurity, it is defeated to become gaseous state for double solvents after evaporating
Enter into condenser, becomes liquid after solidifying and enter in solvent circulating tank to be recycled.The bitumen crude oil isolated squeezes into pitch
Oil tank.After oil-sand raw material uses this method separation and Extraction, the recovery rate of pitch is 97.65% in oil-sand.
After miscella output in extractor, the tailings in extractor containing double solvents is heated to 90-130 DEG C, control
Vacuum degree processed be 2-3KPa, stir 22 minutes, the double solvents in tailings is changed into gaseous state and exports at this time, via vacuum pump into
Enter in condenser, is cooled to be input in solvent circulating tank after liquid to be recycled.Finally tailings is exported again, it is separated
Pitch residual 0.53% in tailings out.
Embodiment 2:
Difference from Example 1 is:
The composition of the double solvents are as follows: No. 120 solvent naphtha 60wt.%, petroleum ether 24.5wt.%, normal heptane
15.5wt.%.
By 1 operating procedure of example, oil-sand raw material is after separation and Extraction, and the recovery rate of pitch is 98.67% or more in oil-sand.
In separated sand material and building stones out, pitch residual 0.3%.
Comparative example 1:
Difference from Example 1 is:
The composition of the double solvents are as follows: No. 120 solvent naphtha 60wt.%, petroleum ether 20wt.%, normal heptane 20wt.%.
Oil-sand raw material is after separation and Extraction, and the recovery rate of pitch is 81.2% in oil-sand.
In separated sand material and building stones out, pitch residual 4.24%.
Comparative example 2:
Difference from Example 1 is:
The composition of the double solvents are as follows: hexane 60wt.%, petroleum ether 25wt.%, normal heptane 15wt.%.
Oil-sand raw material is after separation and Extraction, and the recovery rate of pitch is 75.1% in oil-sand.
In separated sand material and building stones out, pitch residual 6.50%.
Claims (9)
1. a kind of oil sand separating method, it is characterised in that: this method comprises the following steps:
(1) oil-sand raw material is transported in extractor after crushing and drying；
(2) oil-sand carries out extraction processing, pitch and tailings separation through the double solvents in extractor；The composition of the double solvents
Are as follows: petroleum ether 24.2-26wt.%, normal heptane 14.5-16wt.%, No. 120 solvent naphthas are surplus.
(3) oil-sand obtains mixed material, the miscella that pitch and double solvents therein are formed after complex solvent extraction is handled
Filter is pumped by mixing oil pump, is pumped into distillation still again after removing impurity, pitch and double solvents is isolated after distilling；It is mixed
Close oil output after, by extractor residual double solvents and tailings be heated to 90-130 DEG C, and control vacuum degree be 2-3KPa
Under conditions of, the double solvents remained in extractor is changed into gaseous state and exports, and finally again exports tailings.
2. oil sand separating method according to claim 1, it is characterised in that: in step (1), oil-sand feedstock transportation to extraction
Detailed process in device are as follows: oil-sand raw material is transported to pulverizer through conveyer, and being crushed to partial size is 10mm particle below；It passes through again
Conveyer is transported in drying machine, after drying and dehydrating under the conditions of 50-65 DEG C, is transported to extractor by conveyer.
3. oil sand separating method according to claim 1, it is characterised in that: in step (2), the temperature of the extraction processing
It is 50-65 DEG C, the time is 50-120 minutes, and extraction processing carries out under agitation.
4. oil sand separating method according to claim 1 or 3, it is characterised in that: in step (2), the use of double solvents
Amount is the 0.50-0.70wt.% of the weight of oil-sand raw material.
5. oil sand separating method according to claim 1, it is characterised in that: in step (2), the extractor includes closed
Container, blender and heating layer；The heating layer is arranged in the side and bottom surface of closed container, is passed through steam in heating layer or leads
Hot oil heats the material in extractor by steam or conduction oil；Blender is set in closed container in extractor
Mixed material be stirred；The top of the closed container is equipped with vacuum pump interface, gas vent and colvent inlet；Vacuum pump
Interface is for connecting vacuum pump, and to control the vacuum degree in extractor, vacuum pump connects condenser simultaneously；Gas vent and solvent
Entrance is respectively used to the output of double solvents gas and the input of liquid double solvents；The bottom of closed container is exported equipped with tailings
With mixing oil export.
6. oil sand separating method according to claim 5, it is characterised in that: the double solvents is placed in solvent circulating tank
In, by solvent pump after being extracted out in solvent circulating tank, enter in extractor via colvent inlet, it is multiple after being extracted to oil-sand
It is input in distillation still after the removal of impurities of the miscella of bonding solvent and pitch, double solvents becomes after being heated to 90-130 DEG C in distillation still
At gaseous state, and enters in solvent circulating tank after condenser is condensed into liquid and be recycled, remaining pitch input in distillation still
To asphalt oil tank；After remaining double solvents is transformed into gaseous state in extractor, exported through gas vent, and through vacuum pump enter it is cold
After condenser, become in liquids recovery to solvent circulating tank.
7. oil sand separating method according to claim 5, it is characterised in that: in step (3), the oil-sand in extractor is through multiple
After bonding solvent extraction processing, after the double solvents gas output after oil to be mixed and heating, remaining tailings is exported through conveyer,
For building or comprehensively utilizing.
8. oil sand separating method according to claim 7, it is characterised in that: in separated tailings out, coal tar residual
0.3-0.85%.
9. oil sand separating method according to claim 1, it is characterised in that: the oil-sand raw material is mentioned using this method separation
After taking, the recovery rate of pitch is 97% or more in oil-sand.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811128632.0A CN109181739B (en) | 2018-09-27 | 2018-09-27 | Oil-sand separation method |
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| CN201811128632.0A CN109181739B (en) | 2018-09-27 | 2018-09-27 | Oil-sand separation method |
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| CN109181739B CN109181739B (en) | 2020-10-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172360A (en) * | 2019-04-22 | 2019-08-27 | 江苏云端重工科技有限公司 | A kind of natural oil-sand separating and treating apparatus |
| CN115430171A (en) * | 2021-06-03 | 2022-12-06 | 陕西青朗万城环保科技有限公司 | Oil-sand separation treatment process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113912A (en) * | 2013-03-13 | 2013-05-22 | 天津市朗敦环保科技有限公司 | Method for separating and extracting crude oil from oil sand |
| CN105861041A (en) * | 2016-05-09 | 2016-08-17 | 辽宁石油化工大学 | Method for removing sediment in tar sand oil |
| CN207193205U (en) * | 2017-08-22 | 2018-04-06 | 迈安德集团有限公司 | The organic solvent continuous extraction system of tar sand oil |
-
2018
- 2018-09-27 CN CN201811128632.0A patent/CN109181739B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113912A (en) * | 2013-03-13 | 2013-05-22 | 天津市朗敦环保科技有限公司 | Method for separating and extracting crude oil from oil sand |
| CN105861041A (en) * | 2016-05-09 | 2016-08-17 | 辽宁石油化工大学 | Method for removing sediment in tar sand oil |
| CN207193205U (en) * | 2017-08-22 | 2018-04-06 | 迈安德集团有限公司 | The organic solvent continuous extraction system of tar sand oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172360A (en) * | 2019-04-22 | 2019-08-27 | 江苏云端重工科技有限公司 | A kind of natural oil-sand separating and treating apparatus |
| CN115430171A (en) * | 2021-06-03 | 2022-12-06 | 陕西青朗万城环保科技有限公司 | Oil-sand separation treatment process |
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| Publication number | Publication date |
|---|---|
| CN109181739B (en) | 2020-10-16 |
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