CN110461995A

CN110461995A - The endogenous asphalitine encapsulating of asphalt material with light fraction recycling

Info

Publication number: CN110461995A
Application number: CN201880017481.3A
Authority: CN
Inventors: 伊恩·D·盖茨; 王静怡
Original assignee: Solidam Holding Co
Current assignee: Solidam Holding Co
Priority date: 2017-03-14
Filing date: 2018-03-09
Publication date: 2019-11-15
Anticipated expiration: 2038-03-09
Also published as: CN110461995B; SA519402501B1; WO2018165745A1; EP3596187A4; EP3596187A1; MX2019010894A; CA3051612A1

Abstract

A kind of method for forming elastic outer membrane in the aliquot of the bituminous liquids the present invention provides endogenous asphalitine by induction bituminous liquids to be granulated bituminous liquids, this method collect the light component generated by inducing endogenous asphalitine forming process optionally together.

Description

The endogenous asphalitine encapsulating of asphalt material with light fraction recycling

Technical field

The invention belongs to especially by physics and be chemically treated viscous bitumen liquid for making the method field of material forming Body encapsulates shape with the solid for forming discrete (discrete), optionally recycles light fraction as independent product stream.

Background technique

Common practice is that high viscosity and highdensity oil substance are divided into two classes, " heavy oil " and " pitch ".For example, one " heavy oil " is defined as mass density between about 920kg/m by a little sources³(or about 26 ° of API degree) and 1,000kg/m³(or API degree is about 10 °) between petroleum.Pitch is sometimes be described as in natural sediment with petroleum part existing for semi-solid phase or solid phase, in nothing It is measured on the basis of gas, under the original temperature and atmospheric pressure of deposit, mass density is greater than about 1,000kg/m³(or API Degree about 10 °) and viscosity be greater than 10,000 centipoises (cP or 10Pa.s).Although these terms are commonly, to heavy oil and pitch Denotion represent convenient classification and there are continuous properties between heavy oil and pitch.Therefore, the heavy oil that is mentioned above and/ Or pitch includes the non-individual body of these substances, be not meant between both substances there are some fixations and generally approve Boundary.Particularly, term " heavy oil " includes within its scope all " pitches ", including existing for semisolid or solid form Hydrocarbon.Similarly, " pitch " material is the material for including asphalt component, because the component is broadly defined.

Bituminous liquids generally include asphalitine component.Asphalitine for example can be used as nano-colloid suspend or otherwise It is dispersed in bituminous liquids.Asphalitine can be defined in practice by different solubility, such as insoluble in nalka Hydrocarbon (such as pentane or normal heptane) and dissolve in toluene or benzene asphalt material component.In molecule term, asphalitine Existing usually as complex mixture comprising polycyclic aromatic hydrocarbon with high molecular weight carbocyclic unit has oxygen, nitrogen and sulfur heteroatom, with And alkane chain and cycloalkane.As used herein, term " asphalitine " includes the material of this wide variety of definition, " asphalitine " material is the material for including asphalitine component, because the component is broadly defined.

In some cases, the presence of pitch studies on asphaltene has been prompted to represent potential production or transportation problem.Example Such as, in process of production, asphaltene precipitation and deposition be considered as may be by pressure, temperature, chemical component and shear rate Risk caused by changing.On the contrary, relatively high asphaltene concentration seems to deposit as stable viscoplasticity network in some pitches At (Yang and Czarnecki, 2005, Energy&Fuels 19, no.6:2455-2459).In terms of transport, such as describe The method of asphalitine is removed from pitch before transportation (see, for example, U.S. Patent Publication 20170002275).Due to this A little and other reasons, it is known that a variety of methods are used to remove asphalitine from petroleum liquid, such as change in crude oil refineries or pitch Deasphalting units in matter device (upgrader), such as can dissolved fat race chemical combination according to light hydrocarbon such as propane, butane or pentane Object, but the Solvent deasphalting unit of asphalitine is separated the fact that insoluble asphalitine.

Heavy oil and pitch can not only be separated into sticky ingredient, such as asphalitine, and can be separated into lighter material. These light fractions are formed by being saturated (alkane) and aromatic components, and usually have the viscosity lower than asphalitine component.Heavy oil Or pitch can react when heated, which can destroy the key in the heavy constituent of heavy oil and pitch, to generate lighter Material, such as saturated hydrocarbons and aromatic component.When these components are mixed with original heavy oil and pitch, the oil of modification can produce Product.

The preceding feature of heavy oil and pitch causes with liquid or other modes transport, operates and store relevant various risks And challenge.Therefore, it is constantly needed to the technology for being modified to transport and operate heavy oil and pitch.In addition, if processing heavy oil or drip Blueness generates lighter component to transport from the reaction completed to be readily transported heavy oil or pitch, then these light components can To collect and sell as product stream, or collects and re-mixed with original heavy oil and pitch to generate crude oil products or part and change The oil product of matter.

Summary of the invention

In one aspect of the invention, provide the method using following understanding: the endogenous asphalitine in bituminous liquids can On surface to be induced to be flocked on the aliquot of bituminous liquids, so that elastic membrane is formed, with enough structural integrities Property is to remain discrete shape for remaining bituminous liquids.In fact, the endogenous asphalitine in bituminous liquids is in bituminous liquids Elastic cured superficial layer is converted on forming unit.Then, these pitch pellets or capsule can be subjected to adjusted for pellet solid Material processing technology.It, can at these during forming endogenous asphalitine on the surface of the aliquot of bituminous liquids To generate light component from the reaction occurred on bituminous liquids surface.These light components are usually (straight by the alkane of relatively low molecular weight Chain hydrocarbon, up to C20 and possible higher alkane) and aromatic hydrocarbons (cyclic hydrocarbon, until C20 and possible higher aromatic hydrocarbons) composition.These are light Component can be used as individual liquid product stream and collect.

Thus provide the method that bituminous liquids are segregated into discrete forming unit.In the pitch for being usually applied to heating Continuation method in, bituminous liquids can be divided into the liquid aliquot of forming, and each aliquot has by including equal part The discrete shape that partial material processing parts limit.For example, during being similar to intaglio printing, rotor can be at Shape is with dent, and the surface of cylinder is full of bituminous liquids.Then cylinder can be wiped with doctor blade, so that asphaltic liquid The independent aliquot of body is retained in the dent of each recess.Then it can for example be handled by heated rotating cylinder each Shape the outer surface of aliquot so that the gravure cylinder with dent plays the role of the applicator roll of heating, heat from The bituminous liquids of shape form bituminous material outer membrane.In this way, the aliquot of each forming is encapsulated in elasticity In asphalitine coating.When aliquot is discharged from material processing parts, external asphalitine layer has enough elasticity to keep Shape the discrete shape of aliquot.During the printing ink transfer being also similar in intaglio printing, aliquot is shaped Such as it can be discharged into substrate from patterned rotor, such as in the figure for the backing roll and heating for being sandwiched in the second heating After between the gravure roll of case.The forming aliquot being discharged into substrate forms the bullet being encapsulated in asphalitine outer membrane Property forming bituminous liquids unit, such as can cool down in substrate, then for example be discharged from substrate with scraper, generate and drip Green liquid pellet.During being similar to intaglio printing, the light component that generates in the step of forming the bituminous liquids of forming It can be collected into individual liquid product stream.

In other respects, the density of the bituminous liquids unit of the method for the present invention production is adjustable, such as by pellet Interior incorporation reagent, such as bubble, catalyst or solvent.In some embodiments, pellet can be correspondingly designed to float in water, This can for example promote the recycling of pellet material in the case where Environment release or spilling.

In other respects, light component stream can be used as individual product and collect and sale, or can later with pitch Liquid unit is mixed to form the mixture similar to original heavy oil or pitch or partly upgraded oil.

Detailed description of the invention

Fig. 1 is to illustrate a kind of figure of embodiment of methods described herein, this method be used for by heavy oil or bitumen treatment at Pellet form simultaneously recycles the light component formed in this process.

Fig. 2 is to illustrate the figure of the another embodiment of methods described herein, and this method is used for heavy oil or bitumen treatment At pellet form and recycle the light component formed in this process.

Fig. 3 is to illustrate the figure of the another embodiment of methods described herein, and this method is used for heavy oil or bitumen treatment At pellet form and recycle the light component formed in this process.

Fig. 4 is to illustrate the figure of the another embodiment of methods described herein, and this method is used for heavy oil or bitumen treatment At pellet form and recycle the light component formed in this process.

Fig. 5 is a diagram, illustrates heavy oil or pitch are converted to pellet form by patterned roller and obtains different balls Particle shape shape.

Fig. 6 includes three photographs, illustrates the feature of undressed pitch, spherical pellet and steam condensate.

Fig. 7 is to list fossil bitumen, encapsulate the crust of spherical pellet and from the pitch after extraction in the pellet of encapsulating or again The table of the property of oil product.

Fig. 8 is the figure for illustrating alternate embodiment of the invention.

Fig. 9 includes two images, it is shown that the discharge of cylindrical pitch pellet and the pitch encapsulated in pellet.

Specific embodiment

It provides and various heavy oil and pitch (including the residual oil fractions for example from modification and refinery) is granulated, Method lighter component being collected into simultaneously in individual product stream.In some embodiments, continuous high speed method is provided, such as Shown in Fig. 1-6.The unit or pellet of the asphalt material that size and density largely can be changed can be produced.

It, will using the roller arrangement of the intaglio pattern of heating in controlled material operating environment in the method for selection Heavy oil or pitch circulation chemical conversion have the individual junior unit of specific shape.Patterned roller can be used to apply heat to pellet Outside.The output of intaglio plate roller arrangement can be the pellet form of heavy oil or pitch and enter lighter group of individual product stream Point, the pellet form of the heavy oil or pitch has relatively thin semisolid or solid coating on the surface, with enough Elasticity is liquid heavy oil or pitch to be included in pellet.In alternative embodiments, patterned roller can be mentioned by forming For the pellet that shape largely can be changed, for example, spherical shape, ellipse, cube, pyramid, double pyramids or other Shape.Fig. 5 shows the example pattern that can be used to form pitch pellet.In the embodiment of selection, the size of pellet can be In the range of several millimeters to tens centimetres, magnitude of some preferred size embodiments at several centimetres.

Fig. 1 illustrates the present invention being simultaneously collected into lighter component in individual product stream for handling heavy oil or pitch The embodiment of method.In the method, pitch is heated and flows into tank.It is heated, so that the viscosity of heavy oil or pitch Decline, in order to be processed with patterned roller arrangement.In the embodiment of selection, the temperature range of the heating can be in example Between such as from about 150 DEG C and 250 DEG C.In the embodiment of selection, at this stage, temperature may be limited to about 250 DEG C hereinafter, so that The reaction occurred in heavy oil or pitch minimizes.Heat can for example convey by various methods, including the heating of heating tape, steam And electric heating.Light component can be collected by using cold surface or standard condenser coil.

As shown in Figure 1, patterned roller immerses in tank, and the pattern in roller is full of heated bitumen.That heats is patterned Roller for example may remain between about 300 DEG C and 500 DEG C, most preferably be maintained between 350 DEG C and 450 DEG C.

The surface of patterned roller can be for example made of oleophobic material.It then can be by the pitch on roller in recess patterns It is deposited on lipophobic group bottom, as shown, the substrate is heated by backing roll.Then the pitch pattern in substrate is cooling and from base It is scraped on bottom for subsequent transport or processing.The parts are adjustable, so that the reaction on pitch pellet outer surface occurs In protrusion (nib) (contact area between roller), to be coated outside formation on pellet.Roller can be for example loaded, and be made There are normal pressures in protrusion.In this way, the heat and pressure of patterned roller and protrusion cause to react, and lead Cause forms thin solid layer on pitch pellet surface.For example, it may be possible to which thermal cracking (pyrolysis) reaction occurs, produced in pellet surface Raw adhesive coat, and asphaltene precipitation can also be occurred in a manner of helping to enhance the coating on pellet surface.

Controlled material operating environment for example may include for pellet apply additional surface processing parts, such as with change Learn the outside of reagent and/or ultrasonic stimulation processing pellet.Such as it can be using these additional surface treatments to improve outsourcing The desired qualities of clothing.For example, the bituminous liquids of aliquot are likely to be exposed at chemical reagent, such as CO₂, propane, pentane or heptan Alkane.Furthermore it is possible to using physical treatment in addition to heat, such as ultrasonic wave.In order to be formed outside heavy oil or pitch pellet The chemical change occurred outside coating, heavy oil or pitch pellet may for example including asphaltene precipitation and thermal cracking (pyrolysis-general Biggish hydrocarbon chain splits into the compound of smaller hydrocarbon chain).Especially in the protrusion of patterned roller system, it can introduce molten Agent is to increase the formation of asphalitine on pellet surface.

In the downstream side of the unit, light component is collected using condenser.Collect liquid condensate and as product stream It removes.Any form, including coldplate or standard condenser coil pipe can be used in condenser.

Fig. 2 illustrates an exemplary embodiment, and wherein solvent area is located exactly at the upstream of protrusion, while will be compared with Light component is collected into individual product stream.Process conditions may be selected in this embodiment so that the asphalitine from pitch is into one Step is deposited to the surface of pitch pellet.Selectable solvent includes propane, pentane and heptane.

Fig. 3 illustrates another exemplary embodiment, wherein using ultrasonic stimulation in protrusion, while will be relatively light Fraction collection into individual product stream.Process conditions may be selected in this embodiment, exist to further cause asphalitine The precipitating of pitch pellet outer surface, because the aliquot of bituminous liquids is retained in pattern.Such as ultrasonic wave thorn can be carried out Swash to cause the generation of phonochemical reaction, such as the reaction for causing pitch to viscosify.In the embodiment of selection, ultrasonic stimulation Operating frequency for example can be between about 20 and 40kHz.

Fig. 4 illustrates one embodiment, wherein heat, solvent and ultrasonic stimulation are all used on pitch pellet surface be formed Cortex, while lighter component being collected into individual product stream.In other alternative solution, other fluids point can be used Pitch is placed on patterned roller by match system (such as tub coating).

As shown in Figs 1-4, in the embodiment of selection, pellet can be cooled to for example in the downstream of patterned roller arrangement Room temperature or freezing conditions.In this way, in pellet after being come out in protrusion, pellet is cooling, so as to pellet and branch Hold net (substrate) separation.Quench is also contemplated, by lighter Fraction collection into individual product stream.

In some embodiments, before patterned roller arrangement, heavy oil or pitch can be mixed with other materials to produce The raw pellet with other function performance.For example, oil can be partial foaming, so that it has the gas in liquid, this changes The gross density for having become oil, generates natant pellet.For example, as shown in Figure 1, can make pitch enter tank before foam, To form foam-like pitch pellet.Gas for generating foam for example can be nitrogen or carbon dioxide.It can control ball Gas flow in grain is to control the gross density of pitch pellet.It, can be by the molten of encapsulating in the another embodiment of this method Agent is added in heavy oil or pitch, obtains the pellet containing solvent, and when handling pellet, which may be used as one of product Point.Similarly, in another alternate embodiments, one or more catalyst can be distributed in heavy oil or asphalt pellets intragranular so as to In such as processing in future bituminous liquids.

In alternative embodiments, thus it is possible to vary the processing time and condition in patterned rolls device on pellet to provide more Thick coating.In this way, the overall chemical composition of pellet can be adjusted according to specific needs.For example, drip can be improved Green matter content, so that pellet is more amenable for use with the pitch processing of road construction.

Fig. 6 shows the example of the pitch pellet generated by using one of methods described herein.The first width figure of Fig. 6 is shown Undressed pitch.The second width figure of Fig. 6 shows pitch pellet.Skin thickness is less than 1 millimeter.The third width figure of Fig. 6 is shown The liquid condensate that is formed by this method.The density of liquid condensate is equal to 0.875g/cm³。

Fig. 7 shows the inside pitch of exemplary pitch pellet and the analysis data of outer skin.Fossil bitumen is viscosity The about liquid of 1,000,000 cP.After the treatment, outer skin is solid and has the Young's modulus for being equal to 0.1GPa.It is original The asphalt content of pitch and cortex is respectively 18 weight % and 35 weight %.The pitch encapsulated in pellet has and fossil bitumen Essentially identical property.Data show that cortex is relatively thin and hard.

Fig. 8 illustrates another alternate embodiments of the method for the present invention, wherein in solvent bath formed asphalt liquid droplets to Form the asphalitine cortex on outer surface.These methods for example can produce spherical or pitch pellet close to spherical shape.

The example that Fig. 9 shows the pitch pellet generated by using one of methods described herein.The first width figure of Fig. 9 is shown Cylindrical pitch pellet.The second width figure of Fig. 9 shows the pitch being discharged from after pellet is opened and is heated.Viscous bitumen from It is discharged in pellet.Skin thickness is less than 1 millimeter.

In the alternate embodiments of methods described herein, pitch pellet can be coated, for example, with solid bituminite or Coke or polymer coating.The coating can be applied to enhance the mechanical performance of pellet.

In another embodiment, during forming cortex on pellet, the light fraction from heavy oil or pitch can quilt It discharges and captured consequently as individual product stream.Catching method for example may include being contained in the downstream side of pelletizing unit In shell, the steam light fraction discharged in the housing is collected in condenser or Quench condenser or is collected in cooling table On face, then it is directed in collection system and is further processed.

In further step, light fraction can be reconfigured with pitch pellet to form new heavy oil or pitch and mix Object.This can be crushed and mixing liquid and solid by using the method for such as crusher or screw extruder or similar device And it completes.

Although, can according to the common knowledge of those skilled in the art disclosed herein is various embodiments of the present invention To carry out many reorganizations and modification within the scope of the invention.These modifications include replaced with known equivalents it is of the invention any Aspect, to obtain identical result in substantially the same manner.Digital scope includes limiting those of range number.Word " comprising " is used herein as open-ended term, is substantially equivalent to phrase " including but not limited to ", and word "comprising" has There is corresponding meaning.It as used herein, include plural referents without specific amount of censure, unless the context otherwise specifically It is bright.Thus, for example, referring to including more than such things to " things ".References cited herein is not to hold Recognizing these bibliography is the prior art of the invention.Any first file quoted in this specification and all publications (packet Include but be not limited to patents and patent applications) all it is incorporated herein by reference, as each individual publication is by specific and independent It points out to be incorporated herein by reference and as fully expounding herein in ground.The present invention includes basically described above and joining Examine all embodiments and variant of example and attached drawing.

Claims

1. a kind of method that bituminous liquids are segregated into discrete forming unit, comprising:

The bituminous liquids are continuously divided into the liquid aliquot of forming, each aliquot has by including the equal part The discrete shape that partial material processing parts limit；

The outside of the aliquot of each forming is handled, so as to outside the bituminous liquids precipitation bitumens material of forming The aliquot of forming is encapsulated, when the aliquot is from the material by film to be coated with the asphalitine of elasticity The asphalitine coating of the elasticity keeps the discrete shape of the aliquot of forming when managing parts release, is encapsulated in drip to be formed The bituminous liquids unit of elastic forming in green matter outer membrane.

2. according to the method described in claim 1, wherein the initial density of the bituminous liquids is greater than 1g/cm³, and the bullet Property forming bituminous liquids unit density be less than 1g/cm³。

3. method according to claim 1 or 2, wherein the material handler part includes wherein having reeded patterning Roller, the groove retains the bituminous liquids aliquot of each forming, wherein the patterned roller be heated to The outside of each aliquot application heat and the aliquot for thus handling each forming, so as to heavy from the bituminous liquids of forming The outer membrane of shallow lake bituminous material.

4. according to the method described in claim 3, the patterned roller wherein heated be maintained at about 300 DEG C to 500 DEG C it Between temperature.

5. according to the method described in claim 3, the patterned roller wherein heated be maintained at about 350 DEG C to 450 DEG C it Between.

6. the method according to any one of claim 3,4 or 5 further includes the backing roll of heating, at protrusion It is engaged with the patterned roller.

7. method according to any one of claim 3 to 6, wherein the patterned roller is by the drip of the elastic forming Green liquid unit is deposited on lipophobic group bottom.

8. according to the method described in claim 7, wherein the bituminous liquids unit of the elastic forming is on the lipophobic group bottom It is cooled.

9. method according to any one of claim 1 to 8, wherein handling the outside of the aliquot of each forming with heavy The outer membrane of shallow lake bituminous material includes the outer exposed by each aliquot in alkane solvent.

10. according to the method described in claim 9, wherein the alkane solvent is propane, pentane or heptane.

11. method according to any one of claim 1 to 10, wherein handle the outside of the aliquot of each forming with The outer membrane of precipitation bitumens material includes the outer exposed by each aliquot in ultrasonic wave.

12. according to the method for claim 11, wherein the ultrasonic wave is between about 20kHz and 40kHz.

13. method according to claim 1 or 2, wherein the material handler part includes the pitch to form each forming The solvent bath of the aliquot of liquid.

14. according to the method for claim 13, wherein the solvent bath is alkane solvent bath.

15. according to the method for claim 14, wherein alkane solvent is propane, pentane or heptane.

16. according to claim 1 to method described in any one of 15, wherein the thickness that the asphalitine of the elasticity is coated is less than 2mm。

17. according to claim 1 to method described in any one of 16, wherein the original viscosity of the bituminous liquids is at least 1 Million cP.

18. according to claim 1 to method described in any one of 17, wherein the asphalitine coating of the elasticity has at least The Young's modulus of 0.1GPa.

19. according to claim 1 to method described in any one of 18, wherein the asphalt content of the bituminous liquids be 15 to 20 weight percent.

20. according to claim 1 to method described in any one of 19, wherein the asphalitine that the asphalitine of the elasticity is coated contains Amount is 30-40 weight percent.

21. according to claim 1 to method described in any one of 20, wherein being released from heavy oil or pitch in granulation process Light fractions are put, and collect the light fractions.

22. according to claim 1 to method described in any one of 20, wherein the external of aliquot to each forming carries out Processing further includes generating and collecting the light fractions of the bituminous liquids.

23. the method according to claim 21 or 22, wherein by mixing asphalitine outer membrane with the bituminous liquids of encapsulating And heavy oil product is recycled from the bituminous liquids being encapsulated in asphalitine outer membrane, to provide mixing hydrocarbon products, and wherein The light fractions are reconfigured with the hydrocarbon products that mix to provide the heavy oil product.

24. further including according to the method for claim 23, grinding the mixing hydrocarbon products.

25. the method according to claim 23 or 24 further includes heating the mixing hydrocarbon products.

26. the method according to claim 21 or 22, wherein by from the asphaltic liquid being encapsulated in asphalitine outer membrane Body removes asphalitine outer membrane to recycle heavy oil product, and wherein by the light fractions and the heavy oil product again group It closes.