CN109749793B - Method for preparing asphalt-based fuel oil - Google Patents
Method for preparing asphalt-based fuel oil Download PDFInfo
- Publication number
- CN109749793B CN109749793B CN201910082858.XA CN201910082858A CN109749793B CN 109749793 B CN109749793 B CN 109749793B CN 201910082858 A CN201910082858 A CN 201910082858A CN 109749793 B CN109749793 B CN 109749793B
- Authority
- CN
- China
- Prior art keywords
- asphalt
- fuel oil
- based fuel
- fluid
- jet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention relates to a method for preparing asphalt-based fuel oil, which adopts a cavitation-enhanced jet method to jet mix asphalt, a diluent and an accelerant together to obtain the asphalt-based fuel oil. The method realizes non-emulsification blending of the asphalt, greatly improves the dispersibility and stability of the asphaltene in the diluent, and ensures that the prepared asphalt-based fuel oil can be stored at normal temperature for more than 1 year without layering. Compared with the prior art, the method has the advantages of simplicity, safety, stable quality, low cost and the like, and is easy to implement.
Description
Technical Field
The invention belongs to the fields of coal chemical industry and fuel science, and particularly relates to a method for preparing asphalt-based fuel oil.
Background
The asphalt is a black brown high-viscosity complex organic gel substance composed of hydrocarbons with different molecular weights and nonmetal derivatives thereof, and is mainly divided into four types, namely coal tar asphalt, petroleum asphalt, natural asphalt and shale asphalt according to the source of the asphalt. The surface of the asphalt is black and can be dissolved in carbon disulfide. From a chemical composition standpoint, bitumen is a complex sol system consisting of an oil phase, a colloid, and asphaltenes. Wherein the oil phase is a micromolecular dispersed phase consisting of saturated hydrocarbon and aromatic hydrocarbon, and accounts for 50-70% of the mass of the asphalt; the colloid is resin with the molecular weight of 1000-2000, and accounts for 15-30% by mass; the asphaltene is a complex thick aromatic substance with the molecular weight of thousands to tens of thousands, and the mass percentage is 2-25%. Thus, bitumen can be described, on a molecular level, as: takes asphaltene with large molecular mass as a center, adsorbs resin colloid around to form micelle, and disperses in oil phase to form asphalt sol system.
The asphalt is used as a waterproof, moistureproof and anticorrosive organic cementing material. Can be applied to the fields of paint, plastics, rubber and other industries, pavement and the like. However, in terms of the downstream market demand, the asphalt product is mainly applied to the pavement of places such as expressways, municipal roads, bridges, airports and the like, wherein the consumption of asphalt for road construction accounts for 82%. Under the condition of certain capacity, the increase of downstream demand can further promote the increase of the price of the asphalt product, and otherwise, the price can be descended.
Due to the low price, research on fuels from bitumen has begun to be valued by energy power workers. The asphalt is added with light oil or water for emulsification, blending and appropriate treatment to prepare the fuel oil meeting the application requirements, and has certain cost advantage. Because asphalt is a gelatinous substance with a high softening point, the asphalt is generally dispersed by a colloid mill when being used for preparing fuel oil, and then is emulsified and prepared [ the army, the oil tar and the asphalt are emulsified to produce the fuel oil, the fuel and the chemical industry, 2002,33(6):318 and 319 ]. The preparation efficiency is low, the rapid large-scale production is difficult, and the quality is also difficult to control. Attempts should be made to employ more efficient oil blending techniques.
Jet (Jet), refers to a stream of fluid that exits a nozzle, orifice, slit, and blends with the surrounding fluid. The jet is generally free turbulent without solid wall constraints, and is continuously enlarged by entrainment of surrounding fluid through active turbulent mixing at the boundary and flows downstream. The jet flow has turbulent motion diffusion function, can transfer momentum, heat and mass, and can be applied to the technical fields of jet engines, hydroelectric generation, fire-fighting lances, farmland sprinkling irrigation, pollution diffusion, artificial fountains, hydraulic mining, earth and stone excavation and the like. Jet cavitation is the artificially induced cavitation in a water jet emitted from a nozzle. The liquid flow enters the jet pipe at a certain speed, and when the liquid flow flows out of the jet pipe, the aperture is narrowed, so that jet flow is formed at the outlet end. Two low pressure zones are formed before and after jet formation: one is the tangential region when the jet is formed; the other is the vortex region created when the jet enters a relatively stationary fluid. Under certain conditions, the pressure in these two regions is lower than necessary for the gas nuclei to stabilize, which grow and rapidly form large vapor-filled cavitation bubbles. When the Cavitation bubbles flow out of this area with the fluid, the bubbles collapse due to the sudden increase in pressure, creating a Cavitation (Cavitation) effect. When cavitation occurs, each cavitation bubble acts as a "microreactor". In a multiphase system containing organic polymers, strong shearing force can be generated in fluid when cavitation bubbles collapse, so that molecular chemical bonds are broken, free radicals are generated, and various reactions are initiated, typically degradation reaction and oxidation reaction.
The jet technology has been applied to many cases of oil blending, such as: CN1079278C discloses a method for emulsifying and mixing diesel oil by using a tubular ejector; a rotary jet mixing system for blending gasoline is provided by the super deliquescence and the like [ the super deliquescence, the dynamic characteristic research of the gasoline rotary jet blending process, a master academic paper of Shandong university, 2011 ]; zhanggumei et al also applied cross-flow jet mixing to gasoline blending [ Zhanggumei, study of application of jet mixing technology in gasoline blending, master academic paper of China university of Petroleum (east China), 2007 ]. These cases only use the jet mixing technology to mix and blend low-viscosity oil (the cavitation chemistry of oil in jet is rarely studied), there are few cases of jet mixing application of asphalt and high-viscosity oil, and asphalt itself is easy to aggregate and phase-separate (layer) due to its thick aromatic nature and its molecular weight over thousands, which also indicates that the non-emulsifying blending of asphalt is very difficult.
From the perspective of practical production and economic benefit, the more efficient physical and chemical integration method of jet cavitation is adopted to solve the dispersion and stabilization problems of asphalt on a molecular level, and becomes the key for the industrialization of preparing fuel oil from asphalt.
Disclosure of Invention
In view of the drawbacks of the prior art, it is an object of the present invention to provide a method for preparing an asphalt-based fuel oil.
The purpose of the invention is realized by the following technical scheme:
the invention provides a method for preparing asphalt-based fuel oil, which adopts a cavitation-enhanced jet method to jet mix asphalt, a diluent and an accelerant together to obtain the asphalt-based fuel oil.
Preferably, the method comprises in particular the steps of:
heating asphalt, and then allowing the asphalt to enter a jet device under positive pressure to form a fluid 1;
after the accelerant is pre-dissolved in the diluent, the accelerant enters a jet device under positive pressure to form a fluid 2;
releasing the pressure to enable the fluid 1 and the fluid 2 to be mixed in a turbulent way and flow out, thus obtaining the asphalt-based fuel oil.
Preferably, the mass ratio of the asphalt to the diluent to the accelerator is as follows: 10-60: 30-89: 0.1 to 10.
Preferably, the bitumen comprises one or more of coal bitumen, petroleum bitumen, natural bitumen and shale bitumen.
Preferably, the diluent comprises one or more of benzene, toluene, xylene, ethylbenzene, wash oil, anthracene oil, white oil, mineral spirits, ethyl acetate, ethanol, methanol, butanol and dimethyl ether.
Preferably, the accelerator comprises one or more of dibenzoyl peroxide, t-butyl hydroperoxide, cyclohexanone peroxide, lauroyl peroxide, oxygen, hydrogen peroxide, azobisisobutyronitrile, azobisisoheptonitrile, and ammonium persulfate.
Preferably, the asphalt is heated to 30-60 ℃ above the softening temperature.
Preferably, the asphalt enters the jet device at a positive pressure of 0.1-5 MPa; the accelerant is pre-dissolved in the diluent and then enters the jet device at a positive pressure of 0.1-5 MPa.
The cavitation strengthening is to add an accelerant to strengthen the chemical reaction in the jet flow cavitation. When the cavitation bubbles collapse, strong shearing force can be generated in fluid, so that molecular chemical bonds can be broken, free radicals are generated, and various reactions are initiated, typically degradation reaction and oxidation reaction. The added accelerant can generate free radicals in jet flow, promote the degradation reaction and oxidation reaction of asphalt, degrade the asphaltene macromolecules into micromolecules, increase polar groups, reduce the aggregation tendency of the asphaltene and improve the storage stability of the asphaltene in a diluent (or a solvent).
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a simple and safe physical method, has low cost and is easy to implement.
The method realizes non-emulsification blending of the asphalt, greatly improves the dispersibility and stability of the asphaltene in the diluent, and ensures that the prepared asphalt-based fuel oil can be stored at normal temperature for more than 1 year without layering.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1:
heating coal tar pitch (softening point 60 ℃) with the mass percentage of 40% to 110 ℃, and then entering a primary feeding pipe of a jet device at a positive pressure of 0.3MPa to form a fluid 1; mixing 59.5% benzene and 0.5% dibenzoyl peroxide, and feeding into a secondary feeding pipe of a jet device at a positive pressure of 0.3MPa to form a fluid 2; the two streams of fluid release pressure in the flash tank of the device, and are mixed in a turbulent way, after the two streams of fluid flow out through the slit of the jet device, the fluid generates empty explosion and stimulation due to the expansion effect to form micronized fluid, and after the micronized fluid flows out of the jet device, stable and uniform mixed asphalt-based fuel oil is formed, and the mixed asphalt-based fuel oil can be stored for more than 1 year at normal temperature without layering.
Example 2:
heating petroleum asphalt (softening point 80 ℃) with the mass percentage of 30% to 125 ℃, and then entering a primary feeding pipe of a jet device at the positive pressure of 0.8MPa to form a fluid 1; mixing 62% of washing oil with 8% of cyclohexanone peroxide by mass, and feeding the mixture into a secondary feeding pipe of a jet device at a positive pressure of 0.8MPa to form a fluid 2; the two streams of fluid release pressure in the flash tank of the device, and are mixed in a turbulent way, after the two streams of fluid flow out through the slit of the jet device, the fluid generates empty explosion and stimulation due to the expansion effect to form micronized fluid, and after the micronized fluid flows out of the jet device, stable and uniform mixed asphalt-based fuel oil is formed, and the mixed asphalt-based fuel oil can be stored for more than 1 year at normal temperature without layering.
Example 3:
coal tar pitch (softening point 90 ℃) with the mass percentage of 20 percent is heated to 130 ℃, and then enters a primary feeding pipe of a jet device at the positive pressure of 1.5MPa to form a fluid 1; mixing 55% of dimethylbenzene, 22% of anthracene oil and 3% of azodiisobutyronitrile, and feeding the mixture into a secondary feeding pipe of a jet device at a positive pressure of 1.5MPa to form a fluid 2; the two streams of fluid release pressure in the flash tank of the device, and are mixed in a turbulent way, after the two streams of fluid flow out through the slit of the jet device, the fluid generates empty explosion and stimulation due to the expansion effect to form micronized fluid, and after the micronized fluid flows out of the jet device, stable and uniform mixed asphalt-based fuel oil is formed, and the mixed asphalt-based fuel oil can be stored for more than 1 year at normal temperature without layering.
Example 4:
shale asphalt (softening point 90 ℃) with the mass percentage of 10% is heated to 120 ℃ and then enters a primary feeding pipe of a jet device at the positive pressure of 0.1MPa to form a fluid 1; mixing ethyl acetate with the mass ratio of 89.9% and oxygen with the mass ratio of 0.1%, and feeding the mixture into a secondary feeding pipe of a jet device at the positive pressure of 0.1MPa to form a fluid 2; the two streams of fluid release pressure in the flash tank of the device, and are mixed in a turbulent way, after the two streams of fluid flow out through the slit of the jet device, the fluid generates empty explosion and stimulation due to the expansion effect to form micronized fluid, and after the micronized fluid flows out of the jet device, stable and uniform mixed asphalt-based fuel oil is formed, and the mixed asphalt-based fuel oil can be stored for more than 1 year at normal temperature without layering.
Example 5:
heating natural asphalt (softening point 60 ℃) with the mass percentage of 60% to 120 ℃, and then entering a primary feeding pipe of a jet device at a positive pressure of 5MPa to form a fluid 1; mixing 39% white oil and 1% hydrogen peroxide, and feeding the mixture into a secondary feeding pipe of a jet device at a positive pressure of 5MPa to form a fluid 2; the two streams of fluid release pressure in the flash tank of the device, and are mixed in a turbulent way, after the two streams of fluid flow out through the slit of the jet device, the fluid generates empty explosion and stimulation due to the expansion effect to form micronized fluid, and after the micronized fluid flows out of the jet device, stable and uniform mixed asphalt-based fuel oil is formed, and the mixed asphalt-based fuel oil can be stored for more than 1 year at normal temperature without layering.
Comparative example 1:
heating petroleum asphalt (with a softening point of 80 ℃) with a mass percentage of 30% to 125 ℃, stirring and mixing the petroleum asphalt and benzene with a mass percentage of 70% to obtain the asphalt-based fuel oil, and storing the asphalt-based fuel oil at normal temperature for 3 days to realize the layering phenomenon.
Comparative example 2:
heating coal tar pitch (softening point 60 ℃) with the mass percentage of 40% to 110 ℃, and then entering a primary feeding pipe of a jet device at a positive pressure of 0.3MPa to form a fluid 1; enabling 60% of benzene in percentage by mass to enter a secondary feeding pipe of the jet device at a positive pressure of 0.3MPa to form a fluid 2; the two streams of fluid release pressure in a flash tank of the device, are mixed in a turbulent way, and flow out through a slit of the jet device, the fluid generates empty explosion and stimulation due to expansion effect to form micronized fluid, and the micronized fluid flows out of the jet device to form stable and uniform mixed asphalt-based fuel oil, and the stratified phenomenon occurs after the mixed asphalt-based fuel oil is stored for 30 days at normal temperature.
Comparative example 3:
the comparative example was prepared essentially the same as example 1, except that: in the comparative example, coal tar pitch (softening point 60 ℃) with the mass ratio of 40% is firstly heated to 130 ℃. The method causes a great amount of dense smoke on the production field, pollutes the environment and cannot be implemented.
Comparative example 4:
the comparative example was prepared essentially the same as example 1, except that: in the comparative example, coal tar pitch (softening point 60 ℃) with the mass ratio of 40% is firstly heated to 70 ℃. Due to the fact that the heating temperature is too low, coal tar pitch is too viscous to be subjected to jet processing.
Comparative example 5:
the comparative example was prepared essentially the same as example 5, except that: in the comparative example, the mass ratio of the adopted natural asphalt is 70%. The obtained asphalt-based fuel oil has the layering phenomenon after being stored for 40 days at normal temperature.
Comparative example 6:
the comparative example was prepared essentially the same as example 5, except that: in the comparative example, the natural asphalt enters the jet device by adopting a positive pressure of 7 MPa. The production noise is too big, easily causes the equipment to damage.
The invention has many applications, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (7)
1. A method for preparing asphalt-based fuel oil is characterized in that asphalt, a diluent and an accelerant are subjected to jet mixing together by adopting a cavitation-enhanced jet method to obtain the asphalt-based fuel oil;
the accelerant comprises one or more of dibenzoyl peroxide, tert-butyl hydroperoxide, cyclohexanone peroxide, lauroyl peroxide, oxygen, hydrogen peroxide, azobisisobutyronitrile, azobisisoheptonitrile and ammonium persulfate.
2. The method for preparing an asphalt-based fuel oil according to claim 1, characterized in that the method comprises the following steps:
heating asphalt, and then allowing the asphalt to enter a jet device under positive pressure to form a fluid 1;
after the accelerant is pre-dissolved in the diluent, the accelerant enters a jet device under positive pressure to form a fluid 2;
releasing the pressure to enable the fluid 1 and the fluid 2 to be mixed in a turbulent way and flow out, thus obtaining the asphalt-based fuel oil.
3. The method for preparing asphalt-based fuel oil according to claim 1 or 2, wherein the mass ratio of the asphalt, the diluent and the accelerator is as follows: 10-60: 30-89: 0.1 to 10.
4. The method for preparing asphalt-based fuel oil according to claim 1 or 2, wherein the asphalt comprises one or more of coal asphalt, petroleum asphalt, natural asphalt and shale asphalt.
5. The method for preparing asphalt-based fuel oil according to claim 1 or 2, wherein the diluent comprises one or more of benzene, toluene, xylene, ethylbenzene, wash oil, anthracene oil, white oil, mineral spirits, ethyl acetate, ethanol, methanol, butanol, and dimethyl ether.
6. The method for preparing asphalt-based fuel oil according to claim 2, wherein the asphalt is heated to 30 to 60 ℃ above the softening temperature.
7. The method for preparing asphalt-based fuel oil according to claim 2, wherein the asphalt enters the jet device at a positive pressure of 0.1-5 MPa; the accelerant is pre-dissolved in the diluent and then enters the jet device at a positive pressure of 0.1-5 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082858.XA CN109749793B (en) | 2019-01-23 | 2019-01-23 | Method for preparing asphalt-based fuel oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910082858.XA CN109749793B (en) | 2019-01-23 | 2019-01-23 | Method for preparing asphalt-based fuel oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109749793A CN109749793A (en) | 2019-05-14 |
| CN109749793B true CN109749793B (en) | 2020-11-13 |
Family
ID=66406458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910082858.XA Expired - Fee Related CN109749793B (en) | 2019-01-23 | 2019-01-23 | Method for preparing asphalt-based fuel oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109749793B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551537A (en) * | 2019-08-26 | 2019-12-10 | 珠海市三悦石油化工有限公司 | fuel composition containing petroleum asphalt |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088473A (en) * | 1992-12-25 | 1994-06-29 | 王广武 | Circulating emulsion device for viscous fuel oil |
| JP4489756B2 (en) * | 2003-01-22 | 2010-06-23 | ヴァスト・パワー・システムズ・インコーポレーテッド | Energy conversion system, energy transfer system, and method of controlling heat transfer |
| US20120132565A1 (en) * | 2010-11-29 | 2012-05-31 | Exxonmobil Research And Engineering Company | Asphalt oxidation process using liquid jet ejection |
| TW201243244A (en) * | 2011-04-22 | 2012-11-01 | Tian-De Li | Fuel emulsification device |
| CN106474948B (en) * | 2015-08-24 | 2019-09-17 | 宝武炭材料科技有限公司 | Method for producing fuel oil with high asphalt content |
-
2019
- 2019-01-23 CN CN201910082858.XA patent/CN109749793B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN109749793A (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2009352654B2 (en) | Process for drying fine tailings or colloidal fluids | |
| CN107083071B (en) | Normal-temperature asphalt pavement maintenance repair material and preparation method thereof | |
| CA2678818C (en) | Process for drying oil sand mature fine tailings | |
| Xu et al. | Effect of oily sludge on the rheological characteristics of coke-water slurry | |
| CN105462568A (en) | Resin type nanoparticle latex blocking agent for drilling fluids and preparation method of blocking agent | |
| CN101235279A (en) | Highly effective viscosity-reducing agent for thermodynamic oil extraction process | |
| CN109749793B (en) | Method for preparing asphalt-based fuel oil | |
| CN104164224B (en) | A kind of inverse emulsion drilling fluid and its preparation method and application | |
| CN105112033A (en) | Plugging control agent prepared by oil residues or oily sewage and preparation method thereof | |
| CN105038746A (en) | Preparation method of jelly-type oily sludge profile control agent | |
| CN106318356B (en) | A kind of water blockoff lotion and preparation method thereof | |
| CN105198187A (en) | Polymer-containing sludge dispersion and treatment method | |
| CN103819918A (en) | Composite high-viscosity modified asphalt and preparation method thereof | |
| CN101240701B (en) | Non-strong water-sensitive special oil reservoir heating power oil extraction method | |
| WO2020248310A1 (en) | Polymer monodisperse nano-microsphere for deep profile control, and preparation method for polymer monodisperse nano-microsphere | |
| CN102585787B (en) | Efficient urea-formaldehyde resin plugging agent and application thereof | |
| CN101240044B (en) | Method for preparing cross-linking polymer clew with bimodal distribution grain diameter | |
| CN102585530B (en) | Nanometer modified asphalt micro-emulsion and preparation method thereof | |
| CN112898595A (en) | Anionic emulsified asphalt and preparation method thereof | |
| CN105505445B (en) | A kind of equipment of Hydrodynamic Cavitation and system for heavy oil modification | |
| CN104226178A (en) | III-shaped supergravity device and process for continuously preparing methanol emulsified diesel fuel | |
| CN106800926A (en) | A kind of nano-composite fiber liquid carbon dioxide fracturing fluid | |
| US20140116925A1 (en) | Mixing systems for mixing oil sands tailings and polymer | |
| CN113025293A (en) | Epoxy resin self-generated particle profile adjusting system and application thereof | |
| CN104356655A (en) | Road prime coat oil and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201113 Termination date: 20220123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |