CN111375324A - Continuous blending method for fuel oil - Google Patents
Continuous blending method for fuel oil Download PDFInfo
- Publication number
- CN111375324A CN111375324A CN201811629663.4A CN201811629663A CN111375324A CN 111375324 A CN111375324 A CN 111375324A CN 201811629663 A CN201811629663 A CN 201811629663A CN 111375324 A CN111375324 A CN 111375324A
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- Prior art keywords
- oil
- viscosity component
- reservoir
- low
- viscosity
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- 238000002156 mixing Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000295 fuel oil Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 140
- 239000010763 heavy fuel oil Substances 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 239000002283 diesel fuel Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000010747 number 6 fuel oil Substances 0.000 claims description 6
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000003079 shale oil Substances 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 239000010771 distillate fuel oil Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000000084 colloidal system Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010762 marine fuel oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention relates to a fuel oil continuous blending method. The reconciliation method comprises the following steps: (1) delivering the low viscosity component oil into a first reservoir formation, and preheating the low viscosity component oil with geothermal energy to increase its temperature; (2) mixing and shearing the preheated low-viscosity component oil and the high-viscosity component oil in a second oil reservoir layer to obtain mixed oil; (3) and (3) carrying out heat exchange on the mixed oil and the high-viscosity component oil, increasing the temperature of the high-viscosity component oil, and reducing the temperature of the mixed oil to be below the flash point of the mixed oil to obtain the fuel oil. The invention utilizes the oil reservoir and the heat exchange mode of the high and low viscosity component oil, solves the problems of low production efficiency, long blending time and high energy consumption of the traditional intermittent tank type blending method, and improves the safe production capability when the production process is in the underground oil reservoir. The safe, continuous, homogeneous and efficient blending of the heavy fuel oil is realized.
Description
Technical Field
The invention relates to a fuel oil continuous blending method, in particular to a residue type heavy fuel oil continuous blending method.
Background
Bunker fuel oils are typically made by blending a high viscosity component oil (typically a residual oil) with a low viscosity component oil. Because the high viscosity component oil has a high viscosity, the low viscosity component oil for blending generally adopts light component oil with a low viscosity such as catalytic diesel oil, slurry oil, shale oil and the like.
At present, the marine fuel oil blending mode mostly adopts a ground tank blending mode, and particularly adopts methods such as pump circulation, electric stirring and the like to uniformly mix high-viscosity component oil and low-viscosity component oil. Since the viscosity difference between the high-viscosity component oil and the low-viscosity component oil is large, the component oil, particularly the high-viscosity component oil, needs to be heated and kept warm during blending to reduce the viscosity of the high-viscosity component oil. Therefore, the blending mode is long in time consumption and high in energy consumption, is intermittent blending and cannot be used for continuous production.
The prior art discloses a marine fuel oil blending device, and the technical scheme is as follows: the light component oil and the heavy component oil enter the static mixer and the colloid mill sequentially through the valve, the pipeline and the flowmeter respectively, so that the preliminary mixing of the fuel oil and the refinement of the colloid are realized. However, in the case of the device, when the viscosity ratio and density of the heavy component oil and the light component oil are relatively high, the mixed oil is difficult to be uniformly mixed in the static mixer, the layering phenomenon is easily caused, the local heterogeneity is large, and after the mixed oil is refined by the colloid mill, the colloid particle size is reduced, but the uniform mixing is difficult. Meanwhile, the colloid mill has higher power and higher energy consumption.
In addition, the prior art also discloses a heavy bunker fuel oil blending device, and the technical scheme is as follows: the heavy oil is respectively mixed with the backflow blend oil and the at least two light oil components in the static mixer according to a certain proportion, the viscosity of the blend oil is gradually reduced, and then the blend oil is fully mixed in the shearing mixing unit, so that the local uneven mixing caused by the large difference between the viscosity and the density of the heavy oil and the light oil is avoided. However, in the method, heavy component oil needs to be heated to reduce the viscosity, and then the heavy component oil and light component oil are subjected to gradual viscosity reduction in a static mixer, so that the energy consumption in the heating and heat preservation processes is high. And the blended oil is subjected to shear mixing by the shear mixing unit, and the energy consumption in the process is high. In conclusion, the method is continuous in adjustment, but has high energy consumption and large equipment investment.
Disclosure of Invention
In order to overcome the problems of the prior art, the invention provides a novel fuel oil continuous blending method, which solves the problems of low production efficiency, long blending time and high energy consumption of the traditional intermittent tank type blending method by utilizing an oil reservoir and a high-viscosity and low-viscosity component oil heat exchange mode, and improves the safety production capacity when the production process is in an underground oil reservoir. The safe, continuous, homogeneous and efficient blending of the heavy fuel oil is realized.
The technical scheme of the invention is as follows:
a method for continuously blending fuel oil, comprising:
(1) delivering the low viscosity component oil into a first reservoir formation, and preheating the low viscosity component oil with geothermal energy to increase its temperature;
(2) mixing and shearing the preheated low-viscosity component oil and the high-viscosity component oil in a second oil reservoir layer to obtain mixed oil;
(3) and (3) carrying out heat exchange on the mixed oil and the high-viscosity component oil, increasing the temperature of the high-viscosity component oil, and reducing the temperature of the mixed oil to be below the flash point of the mixed oil to obtain the fuel oil.
In the invention, the oil reservoir is a sandstone oil reservoir, the permeability range of the reservoir is 10 millidarcy-1000 millidarcy, and the oil reservoir temperature is within the range of 50-300 ℃. The first reservoir and the second reservoir may be in one reservoir, or may be two or more reservoirs connected in parallel or in series. According to the invention, the low-viscosity component oil is preheated by utilizing the geothermal energy of the sandstone reservoir, and the high-viscosity component oil is sheared and mixed for many times by utilizing the porous medium structure of the sandstone reservoir, so that the high-viscosity component oil and the low-viscosity component oil are mixed more fully.
In order to obtain better mixing effect and improve the quality of the fuel oil, in the step (2), the low-viscosity component oil and the high-viscosity component oil are subjected to heat exchange for 1 time or more, so that the temperature of the high-viscosity component oil is improved, the viscosity of the high-viscosity component oil is reduced, the pipe conveying resistance is reduced, and the mixing effect is improved. The specific number of times can be determined according to the type of the raw oil.
The blending method is not only suitable for marine fuel oil, but also suitable for fuel oil of other purposes, such as fraction fuel oil, residual fuel oil and lubricating oil.
In the present invention, the low viscosity component oil is a low viscosity component oil having a relatively low viscosity such as catalytic diesel oil, slurry oil, shale oil, diesel oil, etc., and usually has a viscosity of 1 to 120mm2In the range of/s. The low-viscosity component oil can be one or more than two of catalytic diesel oil, oil slurry, shale oil, diesel oil and the like.
In the present invention, the high viscosity component oil refers to residual oil, slurry oil, crude oil, etc., and the viscosity is usually 200-10000mm2In the range of/s. The high-viscosity component oil can be one or more than two of residual oil, slurry oil, crude oil and the like.
Further, in the step (1), the preheating refers to heating the low-viscosity component oil to raise the temperature of the low-viscosity component oil to be more than 50 ℃, and a heat source in the preheating process is geothermal heat from the first reservoir stratum.
Further, in the step (2), the mixing ratio and flow rate of the high-viscosity component oil and the low-viscosity component oil can be determined by those skilled in the art according to the properties of the raw material oil and the target fuel oil in combination with the general knowledge.
Compared with the existing fuel oil blending method, the method has the advantages that:
according to the invention, the temperature rise and the viscosity reduction of the high-viscosity component oil are realized by utilizing the special geological structure and the geothermal resources of the sandstone oil reservoir and adopting a heat energy exchange mode, so that the viscosity and density difference of the high-viscosity component oil and the low-viscosity component oil is reduced; the problem of uneven local mixing caused by large viscosity and density difference of heavy oil and light oil in the prior art is avoided; compared with the traditional blending method, the energy consumption of heating and heat preservation of the high-viscosity component oil is reduced; meanwhile, by utilizing the geological characteristics of the sandstone reservoir stratum, the high-viscosity component oil and the low-viscosity component oil are fully sheared and mixed in the flowing process of the reservoir stratum, so that the stability of the oil product is improved. Realizes low-cost continuous blending.
Drawings
FIG. 1 is a schematic diagram of the continuous blending method of bunker fuel oil according to the present invention.
In the figure: 1. a low viscosity component oil; 2. a first reservoir; 3. a preheated low viscosity component oil; 4. high-viscosity component oil after first heat exchange; 5. high-viscosity component oil after the second heat exchange; 6. a low viscosity component oil after heat exchange; 7. a second reservoir; 8. mixing oil; 9. a fuel oil; 10. a high viscosity component oil; 11. a heat exchanger; 12. a heat exchanger.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the present embodiment provides a method for continuously blending bunker fuel, comprising the following steps:
step (1): mixing low viscosity component oil 1 (catalytic diesel oil and oil slurry mixture, viscosity of 80mm at 50 deg.C)2/s) is transported from the surface into the first reservoir 2 for preheating to raise its temperature to 100 ℃;
step (2): conveying the low-viscosity component oil 3 preheated in the first reservoir stratum 2 to the ground, and carrying out heat exchange on the high-viscosity component oil 4 (hydrogenated residual oil, the viscosity of which is 300mm at the temperature of 50 ℃) after the first heat exchange2/s) second heat exchange is performed by the heat exchanger 11 to raise the temperature of the high-viscosity component oil 4;
and (3): conveying the high-viscosity component oil 5 subjected to the second heat exchange and temperature increase and the low-viscosity component oil 6 subjected to the heat exchange to a second oil reservoir 7 according to a certain proportion and flow rate, and mixing and shearing in the reservoir; the mixing proportion and the flow rate can be determined by the person skilled in the art according to the requirements of raw oil and fuel oil;
and (4): the mixed oil 8 mixed in the second reservoir 7 is conveyed to the ground, and is subjected to first heat exchange with the high-viscosity component oil 10 through a heat exchanger 12, the temperature of the mixed oil is reduced to be lower than the flash point of the fuel oil, and the bunker fuel oil product 9 (the viscosity at 50 ℃ is 165 mm) is obtained2/s)。
The first reservoir and the second reservoir refer to sandstone reservoir reservoirs, the permeability range is 500 millidarcy, and the reservoir temperature is 150 ℃.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A method for continuously blending fuel oil, comprising:
(1) delivering the low-viscosity component oil into a first reservoir, and preheating the low-viscosity component oil by utilizing terrestrial heat to increase the temperature of the low-viscosity component oil to be more than 50 ℃;
(2) mixing and shearing the preheated low-viscosity component oil and the high-viscosity component oil in a second oil reservoir layer to obtain mixed oil;
(3) and (3) carrying out heat exchange on the mixed oil and the high-viscosity component oil, increasing the temperature of the high-viscosity component oil, and reducing the temperature of the mixed oil to be below the flash point of the mixed oil to obtain the fuel oil.
2. The blending method according to claim 1, wherein the reservoir is a sandstone reservoir having a permeability in the range of 10 millidarcy to 1000 millidarcy and a reservoir temperature in the range of 50-300 ℃.
3. The reconciliation method of claim 1 or 2 wherein the first reservoir and the second reservoir are in one reservoir or are two or more reservoirs in parallel or in series.
4. The blending method according to claim 1 or 2, wherein in the step (2), the low-viscosity component oil and the high-viscosity component oil are heat-exchanged and then mixed.
5. The blending method according to claim 4, wherein the number of heat exchanges is determined according to a type of the feedstock oil and a target fuel oil.
6. The blending method according to any one of claims 1 to 5, wherein the blending method is suitable for bunker fuel oil, distillate fuel oil, residual fuel oil, and lubricating oil.
7. Blending process according to any of claims 1 to 6, characterized in that the viscosity of the low viscosity component oil is between 1 and 120mm2In the range of/s.
8. The blending method according to claim 7, wherein the low-viscosity component oil is one or more of catalytic diesel oil, slurry oil, shale oil and diesel oil.
9. The blending method according to any one of claims 1 to 8, wherein the viscosity of the high-viscosity component oil is 200-10000mm2In the range of/s.
10. The blending method according to claim 9, wherein the high viscosity component oil is one or more selected from a residue, a slurry oil, and a crude oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629663.4A CN111375324B (en) | 2018-12-28 | 2018-12-28 | Continuous blending method for fuel oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629663.4A CN111375324B (en) | 2018-12-28 | 2018-12-28 | Continuous blending method for fuel oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111375324A true CN111375324A (en) | 2020-07-07 |
| CN111375324B CN111375324B (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629663.4A Active CN111375324B (en) | 2018-12-28 | 2018-12-28 | Continuous blending method for fuel oil |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588831A (en) * | 2020-12-07 | 2022-06-07 | 中国石油化工股份有限公司 | Fuel oil preparation system and method |
| CN115181584A (en) * | 2021-04-01 | 2022-10-14 | 中国石油天然气股份有限公司 | Production process and system of residual type low-sulfur marine fuel oil |
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| JPS54120302A (en) * | 1978-03-10 | 1979-09-18 | Toshiba Corp | Control method for terrestrial heat mixed-pressure turbine |
| CN207203991U (en) * | 2017-06-17 | 2018-04-10 | 中国石油化工股份有限公司 | A kind of residue type fuel oil mixing device |
-
2018
- 2018-12-28 CN CN201811629663.4A patent/CN111375324B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120302A (en) * | 1978-03-10 | 1979-09-18 | Toshiba Corp | Control method for terrestrial heat mixed-pressure turbine |
| CN207203991U (en) * | 2017-06-17 | 2018-04-10 | 中国石油化工股份有限公司 | A kind of residue type fuel oil mixing device |
Non-Patent Citations (3)
| Title |
|---|
| 李菊香，王良虎: "稠性油田井下作业的热管利用可行性探讨 ", 《能源研究与利用》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114588831A (en) * | 2020-12-07 | 2022-06-07 | 中国石油化工股份有限公司 | Fuel oil preparation system and method |
| CN114588831B (en) * | 2020-12-07 | 2024-05-17 | 中国石油化工股份有限公司 | Fuel oil preparation system and method |
| CN115181584A (en) * | 2021-04-01 | 2022-10-14 | 中国石油天然气股份有限公司 | Production process and system of residual type low-sulfur marine fuel oil |
| CN115181584B (en) * | 2021-04-01 | 2023-12-22 | 中国石油天然气股份有限公司 | Production process and system of residue type low-sulfur marine fuel oil |
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| CN111375324B (en) | 2022-11-08 |
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Effective date of registration: 20231111 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec (Dalian) Petrochemical Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: DALIAN RESEARCH INSTITUTE OF PETROLEUM AND PETROCHEMICALS, SINOPEC Corp. |
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