CN105567300B - A kind of method of solvent deasphalting extraction tower and solvent deasphalting - Google Patents
A kind of method of solvent deasphalting extraction tower and solvent deasphalting Download PDFInfo
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- CN105567300B CN105567300B CN201410543556.5A CN201410543556A CN105567300B CN 105567300 B CN105567300 B CN 105567300B CN 201410543556 A CN201410543556 A CN 201410543556A CN 105567300 B CN105567300 B CN 105567300B
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Abstract
The invention discloses a kind of methods of solvent deasphalting extraction tower and solvent deasphalting.The filler component being arranged in the extraction tower includes the baffle of multiple placements that are mutually parallel, and can effectively improve extraction effect.
Description
Technical field
The present invention relates to a kind of methods of solvent deasphalting extraction tower and solvent deasphalting, and in particular, to a kind of solvent
The extraction tower of pitch in heavy oil is removed, and carries out the method for heavy oil extractable bitumen on the extraction tower.
Background technology
The raw material of solvent deasphalting is mostly residual oil, and viscosity is big, mostly uses the extraction tower of extraneous input energy.It is domestic most
The propane deasphalting extraction tower of number oil plant all uses hydro powered rotating disc column.Since the high speed liquid flow of hydro powered turbine generates
Vortex caused by excessive agitation, the drop of dispersed phase can be made too small, generate serious back-mixing, be unfavorable for mass transfer and detach.Greatly
The deasphalting unit of most oil plants reflects, influences unobvious to deasphalted oil yield whether turntable rotates, therefore, many factories are not
The turntable for restarting rotating disc column, causes rotating disc column to actually become baffle column, and mass-transfer efficiency is very low；Certain factories have attempted to
Propane deasphalting extraction tower is transformed using random packing, but because its anti-clogging, anti-coking performance are very poor, correctional effect is very
It is undesirable, and be forced to stop work to device with the growth of operating time and clean.In view of these situations, it is necessary to develop new efficient pumping
Stripper replaces traditional rotating disc column, sieve-plate tower or packed tower.
CN2090288U discloses a kind of column extractor with cellular-type grid regular packing.Primary structure is porous calandria in tower
Liquid distributor, cellular-type grid structured packing and the corrugated plate dst packing support plate with effect of mass transmitting., biography big with treating capacity
Matter is functional, convenient and reliable operation, feature easy to maintenance.
CN102631794A discloses a kind of perforated-plate extraction tower；At tray outlet install flow apron, flow apron with
The parallel installation of downspout.Downspout mounted angle determined by continuous phase throat width and column plate spacing, i.e. tower continuous phase entrance
Wide, column plate spacing and downcomer wall length constitute a right angled triangle.It is downspout and flow apron fluting.Downspout top
Lateral small front apron is installed, it is the one third of downspout fluting number to two install the number of lateral small front apron at several flutings
/ mono-, lateral small front apron width is 2-3 times of downspout wall thickness.Continuous phase liquid can be flowed through uniformly entirely in extraction tower
In tower, recirculating zone disappears substantially between column plate, and Flow Field Distribution is uniform.
CN102698465A discloses a kind of packed extraction tower with redistributor and/or vertical baffle.The extraction tower
Including one or more redistributors and/or one or more layers vertical baffle, redistributor is placed between two packing layers, filler
Between layer and light phase distributor or between packing layer and heavy phase distributor；Vertical baffle is placed in packing layer, every layer of vertical baffle
There are one or multiple, parallel to each other between multiple vertical baffles or mutual right-angled intersection.The present invention changes the internals knot inside tower
Structure, redistributor eliminate the axial backmixing of continuous phase, and vertical baffle eliminates the lateral flow of continuous phase, and continuous phase is made to extract
It takes the flow regime in tower close to plug flow, improves the separative efficiency of extraction, also improve extraction output of column, structure
It is upper simple and practical, it is easy to accomplish.
It includes several lattice disposed in parallel that CN101623617A, which discloses a kind of grid packing and filling-material structure, grid packing,
Grid, screen are equipped with more than two perforation, distance sink tube are equipped between every two blocks of screens, separately have pull rod corresponding with perforation number to hand over
For across screen and distance sink tube, pull rod both ends, which are equipped with fastener, makes screen be linked to be an entirety with distance sink tube.Applied to packed tower
If filling-material structure be made of dried layer above-mentioned grid packing setting up and down, the grid of filler is perpendicular to filler tower section, up and down
Adjacent two layers of grid packing is staggered in 45 °.In terms of this structure may be advantageously employed in gas purification, but for high viscosity
Heavy oil depitching system for, easily cause deposition on grid and block.
For extraction tower, the extraction tower especially without extraneous input energy, the component of extraction tower rises in extraction process
Important role, mainly there are two aspects for effect, first, inhibiting the axial backmixing of continuous phase, two are to provide surface area to promote
Into dispersed phase crushing, polymerization and redisperse to strengthen mass transfer.Due to solvent deasphalting raw material-heavy oil density and viscosity compared with
Greatly, with greater need for the component of extraction tower disclosure satisfy that continuous phase smooth flow and dispersed phase dispersion with polymerize, avoid extraction tower
Interior axial backmixing influences the separative efficiency of extraction tower.The pumping of solvent deasphalting can't be effectively performed in the above-mentioned prior art
It carries, therefore, it is necessary to a kind of extraction towers and method of more effective solvent deasphalting.
Invention content
The purpose of the invention is to more effectively extract the pitch in heavy oil, a kind of solvent deasphalting extraction tower is provided
With the method for solvent deasphalting.
To achieve the goals above, the present invention provides a kind of solvent deasphalting extraction tower, as shown in Figure 1, the extraction tower packet
It includes：Light component discharge port 1, tower body 2 and heavy constituent discharge port 15；Light component discharge port 1 is arranged in the top of tower body 2, heavy constituent
Discharge port 15 is arranged in the bottom of tower body 2；Wherein, the inner space of tower body 2 is equipped with filler and extracts Disengagement zone successively from top to bottom
3, solvent distribution area 13 and heavy constituent collecting region 16；The inner space that filler extracts Disengagement zone 3 includes sedimentation separation area and solvent
Adverse current extracting area, the top that area is extracted in the solvent counter current is arranged in the sedimentation separation area, in the sedimentation separation area and institute
It states between solvent counter current extracts area and is additionally provided with heavy oil feed pipe 18 and heavy oil fluid distributor 7；It is equipped in the sedimentation separation area
Heat exchanger 5 and at least one set of filler component, the filler component in solvent counter current extracting area equipped with multigroup stacking and admittedly
The supporting beam 11 of the fixed filler component.
The present invention also provides a kind of method of solvent deasphalting, this method is extracted in solvent deasphalting provided by the invention
It is carried out in tower, including：The filler that the mixed liquor of solvent and heavy oil is added to the solvent deasphalting extraction tower extracts Disengagement zone, with
Extract the asphalt component in the heavy oil.
Through the above technical solutions, depitching raw material --- what heavy oil and solvent mixture can be arranged in extraction tower fills out
Expect in component, solvent and heavy oil adverse current, cross-flow passes contact can be achieved under the action of multiple dip-parallel baffles of setting, carry
High extraction efficiency.It is equipped with heat exchanger above filler component and adjusts extracting top fluid temperature, further increases extraction efficiency.
Filler baffle has certain inclination angle so that filler has from the function of rinsing, and it is stifled in filler to be effectively prevented from heavy oil
Plug deposition.Overcome in the prior art, liquid flowing is uneven in extraction tower, there are the prodigious recirculating zone of area between column plate, in tower
The disadvantages such as space effective rate of utilization is low, and two-phase mass-transfer efficiency is low and the disadvantage that random packing pressure drop is big, efficiency is low.Using this
The extraction tower provided and method are provided, the flowing of fluid can be improved, improves mass-transfer efficiency, to improve the extracting effect of extraction tower
Rate.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the extraction tower structural shape that the present invention uses；
Fig. 2 is the vertical view of filler component；
Fig. 3 is the partial sectional view of filler component；
Fig. 4 is the stereoscopic schematic diagram of heat exchange baffle in heat exchanger.
Reference sign
1, light component discharge port 2, tower body 3, filler extract Disengagement zone
4, vertical heat exchanger tube 5, heat exchanger 6, the first filler component
7, heavy oil fluid distributor 8, the second filler component 9, third filler component
10, the 4th filler component 11, supporting beam 12, distributor
13, solvent distribution area 14, bottom of tower shell 15, heavy constituent discharge port
16, heavy constituent collecting region 17, solvent feed pipe 18, heavy oil feed pipe
19, heat transferring medium collecting pipe 20, heat transferring medium entrance 21, heat transferring medium outlet
22, heat transferring medium distribution pipe 23, baffle 24, annular sidewall
25, gap 27 between plate muscle 26, baffle, heat exchange baffle are supported
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, with reference to the direction in attached drawing, solvent deasphalting extraction tower is
It erects, the noun of locality used such as " upper, top or top " refers to the central axis direction light component along solvent deasphalting extraction tower
The direction of discharge port；" under, lower section or bottom " refers to being directed toward heavy constituent discharge port along the central axis of solvent deasphalting extraction tower
Direction.
The present invention provides a kind of solvent deasphalting extraction tower, as shown in Figure 1, the extraction tower includes：Light component discharge port 1,
Tower body 2 and heavy constituent discharge port 15；Light component discharge port 1 is arranged at the top of tower body 2, and heavy constituent discharge port 15 is arranged in tower body
2 bottom；Wherein, the inner space of tower body 2 is equipped with filler extracting Disengagement zone 3, solvent distribution area 13 and again successively from top to bottom
Fraction collection area 16；The inner space of filler extracting Disengagement zone 3 includes sedimentation separation area and solvent counter current extracting area, the sedimentation
The top that area is extracted in the solvent counter current is arranged in Disengagement zone, between the sedimentation separation area and solvent counter current extracting area
It is additionally provided with heavy oil feed pipe 18 and heavy oil fluid distributor 7；Heat exchanger 5 and at least one set of filler are equipped in the sedimentation separation area
Component, the solvent counter current extract the supporting beam of the filler component that multigroup stacking is equipped in area and the fixed filler component
11。
In solvent deasphalting extraction tower provided by the invention, light component discharge port 1 is used to arrange the deasphalted oil extracted
Go out the extraction tower.Heavy constituent discharge port 15 is used to the de-oiled asphalt obtained after extracting the extraction tower is discharged.Filler extracting separation
For carrying out solvent deasphalting extracting, raw material extracting effectively can be separated into depitching by the filler component being provided in area 3
Oil and de-oiled asphalt.
According to the present invention, as shown in Figure 2, it is shown that the vertical view effect of the filler component.Under preferable case, the filler
Component includes the baffle 23, annular sidewall 24 and multiple support plate muscles 25 being placed in parallel of multiple placements that are mutually parallel；Baffle 23
It is arranged in the cylinder that annular sidewall 24 surrounds with support plate muscle 25, support plate muscle 25 and 23 vertical connection of baffle, for branch
Baffle 23 is simultaneously fixed on annular sidewall 24 by spacer plate 23.Support plate muscle 25 and annular sidewall 24 are played and are supported and fixed jointly
The effect of baffle 23, and can prevent from, as connecting with annular sidewall 24 using baffle 23, the defect of fluid flow dead zone being formed.
The final filler component is fixed in supporting beam 11.As long as the filler component can be fixed in extraction tower by supporting beam 11
, can be tower structure, be welded to connect with extraction tower.
According to the present invention, multiple baffles 23 in the filler component are arranged according to certain rule.Baffle and gear
There are certain spaces between plate, form coating region, separation is stripped for raw material.As shown in Figure 3, it is shown that institute
State the sectional view of the partial elevational of filler component.Multiple baffles 23 are arranged parallel to each other into multiple rows of.The baffle-plate misplacement row of difference row
Row, i.e. gap between the baffle of a row are against the centre position of the baffle of an adjacent row.Under preferable case, baffle 23 and horizontal plane
Acute angle β be 30-70 °；Baffle 23 is rectangle or arc, and the length-width ratio of baffle 23 is 4-15:1, the width of baffle can
Think 10-400mm；Vertical interval between adjacent, parallel baffle 23 is 20-300mm, the spacing between the baffle 23 of arranged adjacent
Ratio with the width of baffle 23 is 0.1-0.5：1.Preferably, the length-width ratio of baffle 23 is 4-10:1, β is 40-60 °, baffle 23
Width be 10-200mm, the vertical interval between adjacent, parallel baffle 23 is 20-200mm.Baffle 23 is arranged in an inclined manner
Can be after raw material enter the coating region, under gravity, heavy constituent sinks to the baffle below coating region simultaneously
Flow downward along baffle, and simultaneously light component because buoyancy rise along the baffle above coating region and along baffle to
Upper flowing.Multiple coating regions in the filler component, which are equivalent to, constitutes multiple extracting separation sub-districts, allows raw material more
Multiple extracting separation is carried out when being flowed between a baffle, improves extraction efficiency.
In the present invention, multiple filler components are set in filler extracts Disengagement zone 3.The described of neighbouring placement is filled out
Expect in component, the inclined direction of baffle 23 is different, such as in Fig. 1, and the baffle in a filler component is extracted from solvent deasphalting
The right side of tower obliquely left side, then the baffle in the other filler component above and below this filler component be exactly from solvent take off
The left side of asphalt extraction tower obliquely right side.
A preferred embodiment according to the present invention is equipped with the first filler component 6 in the sedimentation separation area；It is described molten
The inner space in agent adverse current extracting area is equipped with the second filler component 8, third filler component 9 and the 4th filler component from top to bottom
10.As illustrated in fig. 1, it is preferred that the inclined direction of the baffle in the first filler component 6 is oblique from the right side of solvent deasphalting extraction tower
Left side downwards, the inclined direction of the baffle in the second filler component 8 is from the right side of solvent deasphalting extraction tower left side obliquely, and the
The inclined direction of baffle in three filler components 9 from the left side of solvent deasphalting extraction tower obliquely right side, the 4th filler component
The inclined direction of baffle in 10 from the right side of solvent deasphalting extraction tower obliquely left side.
Heavy oil feed pipe 18 and heavy oil fluid distributor 7 in the present invention are used to provide weight to the solvent deasphalting extraction tower
The mixed liquor of oil and solvent.There is no particular limitation for heavy oil fluid distributor 7, can effectively distribute fluid even into extraction tower
It is interior.
According to the present invention, in the sedimentation separation area, setting heat exchanger 5 can adjust the fluid temperature (F.T.) at the top of extraction tower, carry
High extraction effect.Under preferable case, heat exchanger 5 includes heat transferring medium collecting pipe 19, heat transferring medium distribution pipe 22, and is connected to and changes
Thermal medium collecting pipe 19 and heat transferring medium distribution pipe 22 and the vertical heat exchanger tube 4 for carrying heat exchange baffle 27.
As shown in Figure 4, it is shown that band heat exchange baffle 27 on vertical heat exchanger tube 4.Vertical heat exchanger tube 4 is located at heat exchange baffle 27
Center, can be by being welded to connect.Baffle on adjacent vertical heat exchanger tube is staggered between each other.
In the case of, according to the invention it is preferred to, heat exchange baffle 27 has multiple and is mutually parallel on vertical heat exchanger tube 4, adjacent
Spacing between parallel heat exchange baffle 27 is 20-300mm, and the acute angle α of heat exchange baffle 27 and horizontal plane is 30-70 °.
In the present invention, heat transferring medium collecting pipe 19 is arranged in the top of vertical heat exchanger tube 4, and heat transferring medium distribution pipe 22 is arranged
In the lower section of vertical heat exchanger tube 4.
In the case of, according to the invention it is preferred to, solvent distribution area 13 is arranged in the lower section of supporting beam 11, and solvent distributes in area 13
Equipped with distributor 12 and solvent feed pipe 17；Heavy constituent collecting region 16 is arranged in the lower section of distributor 12, with heavy constituent discharge port
15 connections.Distributor 12 is connected to solvent feed pipe 17, can be ability for providing in the solvent to extraction tower evenly distributed
The conventional use of fluid distributor in domain and feed pipe.
The present invention also provides a kind of method of solvent deasphalting, this method is extracted in solvent deasphalting provided by the invention
It is carried out in tower, including：The filler that the mixed liquor of solvent and heavy oil is added to the solvent deasphalting extraction tower extracts Disengagement zone, with
Extract the asphalt component in the heavy oil.
In the case of, according to the invention it is preferred to, the temperature at the top of the solvent deasphalting extraction tower is 60-190 DEG C, described
The temperature of the bottom of solvent deasphalting extraction tower is 70-210 DEG C；In terms of gauge pressure, the inside of the solvent deasphalting extraction tower
Pressure is 2-10MPa.
In the case of, according to the invention it is preferred to, the solvent is C3-C7 alkane；The heavy oil is residual oil, decompression residuum, thick
At least one of oil and inferior heavy oil；The volume ratio of the solvent and heavy oil is 3-12：1.Preferably, the solvent is third
Alkane.
In the present invention, A and two road direction extraction towers of B is divided to provide raw material.The roads A are heavy oil feed pipe 18 and heavy oil fluid distributor
7, solvent and heavy oil are provided；The roads B are solvent feed pipe 17 and distributor 12, provide solvent.Under preferable case, the roads A provide molten
The volume ratio for the solvent that agent and the roads B provide is 1:3-10；In the roads A, the volume ratio of solvent and heavy oil is 0.1-2:1.
The course of work of the method provided by the invention in extraction tower provided by the invention is described referring to Fig. 1.
The mixed of the heavy oil and solvent that are uniformly mixed is provided to extraction tower by heavy oil feed pipe 18 and heavy oil fluid distributor 7
Close liquid.Under gravity, mixed liquor enter filler extracting Disengagement zone 3 in solvent counter current extracting area in filler component 8,
9,10, and each coating region constituted full of wherein baffle 23.Simultaneously from solvent feed pipe 17 and distributor 12 to extraction tower
Middle feed solution, solvent rise the filler component 8,9,10 also entered in the area of the solvent counter current extracting in filler extracting Disengagement zone 3,
And in each coating region being made of baffle 23 with above-mentioned mixed liquor counter current contacting.In the coating region of component, mixing
Heavy constituent is sunk to below coating region in liquid baffle simultaneously flows downward along baffle；Light component because buoyancy rise along
The upper surface of coating region baffle is simultaneously flowed along baffle obliquely.In the lower edge of baffle, heavy constituent enters next thin layer, and light
Component cross-flow contacts.Constantly adverse current, cross-flow contact solvent in the coating region of filler component with heavy oil so that light group in heavy oil
Divide constantly dissolving in a solvent, realize that heavy oil removes pitch, heavy constituent finally enters heavy constituent collecting region 16, is separated by recombinating
Material mouth 15 flows out extraction tower.The solvent entrainment portions heavy constituent for having dissolved light component flows up, residing for filler component 6
Sedimentation separation area.In the coating region that baffle 23 in filler component 6 is constituted, fluid further occurs for light component and heavy constituent
Countercurrently, cross-flow extracts, and light component enters the region where heat exchanger 5, and the effect of fluid temperature (F.T.) is adjusted in the heat exchange of heat exchanger 5
Under, improve solvent extraction process of the light component in the coating region that heat exchange baffle 27 is constituted, further increases deasphalted oil
Quality.Last light component flows out extraction tower by extraction tower light component discharge port 1.
The present invention will be described in detail by way of examples below.
Extraction efficiency is calculate by the following formula to obtain in embodiment and comparative example：
Extraction efficiency=(deasphalted oil rewinding rate ÷ heavy oil feeds rate) × 100%
Heavy oil property used in embodiment and comparative example is shown in Table 1.
Embodiment 1
The method that the present embodiment is used to illustrate solvent deasphalting provided by the invention.
As shown in Figure 1, tower a diameter of 200mm, tower height degree 2m.As shown in Figures 2 and 3, the baffle 23 in filler component is
The angle β of rectangle, width 30mm, length 120mm, baffle 23 and horizontal plane is 30 °.Hanging down between adjacent, parallel baffle
Straight spacing is 20mm, and the spacing between the baffle of arranged adjacent is 15mm.Filler extracts Disengagement zone and is equipped with 5 groups of filler components.
As shown in figure 4, in heat exchanger, the spacing between adjacent, parallel heat exchange baffle 27 is 30mm, and exchange heat baffle 27 and water
The acute angle of plane is 55 °.
2kg/h heavy oil and the propane of 0.5 times of heavy oil volume enter extracting from heavy oil feed pipe 18 and heavy oil fluid distributor 7
Tower, while the propane of 5 times of heavy oil volumes is added from distributor 12 and solvent feed pipe 17.The head temperature for controlling extraction tower is 80
DEG C, the temperature of bottom is 70 DEG C, and the pressure inside extraction tower is 2.9MPa, and the heat-exchange temperature of heat exchanger 5 is 80 DEG C.Extract is certainly
The light component discharge port 1 of tower top exits into subsequent piece-rate system and obtains deasphalted oil, and deasphalted oil rewinding rate is 1kg/
h；Raffinate exits into subsequent separation system from the heavy constituent discharge port 15 of bottom of tower and obtains pitch.Extraction tower is operated continuously
300 hours, component Internal baffle did not find that heavy oil accumulates.
Product yield and property are shown in Table 2.
Embodiment 2
The method that the present embodiment is used to illustrate solvent deasphalting provided by the invention.
As shown in Figure 1, tower a diameter of 200mm, tower height degree 2m.As shown in Figures 2 and 3, the baffle 23 in filler component is
The angle β of arc, width 20mm, length 200mm, baffle 23 and horizontal plane is 70 °.It is vertical between adjacent, parallel baffle
Spacing is 10mm, and the spacing between the baffle of arranged adjacent is 5mm.Filler extracts Disengagement zone and is equipped with 3 groups of filler components.
As shown in figure 4, in heat exchanger, the spacing between adjacent, parallel heat exchange baffle 27 is 20mm, and exchange heat baffle 27 and water
The acute angle α of plane is 30 °.
2kg/h heavy oil and the propane of 0.5 times of heavy oil volume enter extracting from heavy oil feed pipe 18 and heavy oil fluid distributor 7
Tower, while the propane of 5 times of heavy oil volumes is added from distributor 12 and solvent feed pipe 17.The head temperature for controlling extraction tower is 80
DEG C, the temperature of bottom is 70 DEG C, and the pressure inside extraction tower is 2.9MPa, and the heat-exchange temperature of heat exchanger 5 is 80 DEG C.Extract is certainly
The light component discharge port 1 of tower top exits into subsequent piece-rate system and obtains deasphalted oil, and deasphalted oil rewinding rate is
1.04kg/h；Raffinate exits into subsequent separation system from the heavy constituent discharge port 15 of bottom of tower and obtains pitch.Extraction tower is connected
Continuous operation 300 hours, component Internal baffle do not find that heavy oil accumulates.
Product yield and property are shown in Table 2.
Embodiment 3
The method that the present embodiment is used to illustrate solvent deasphalting provided by the invention.
As shown in Figure 1, tower a diameter of 200mm, tower height degree 2m.As shown in Figures 2 and 3, the baffle 23 in filler component is
The angle β of rectangle, width 30mm, length 100mm, baffle 23 and horizontal plane is 45 °.Hanging down between adjacent, parallel baffle
Straight spacing is 20mm, and the spacing between the baffle of arranged adjacent is 10mm.Filler extracts Disengagement zone and is equipped with 4 groups of filler components.
As shown in figure 4, in heat exchanger, the spacing between adjacent, parallel heat exchange baffle 27 is 20mm, and exchange heat baffle 27 and water
The acute angle α of plane is 70 °.
2kg/h heavy oil and the propane of 0.5 times of heavy oil volume enter extracting from heavy oil feed pipe 18 and heavy oil fluid distributor 7
Tower, while the propane of 6 times of heavy oil volumes is added from distributor 12 and solvent feed pipe 17.The head temperature for controlling extraction tower is 80
DEG C, the temperature of bottom is 70 DEG C, and the pressure inside extraction tower is 2.9MPa, and the heat-exchange temperature of heat exchanger 5 is 80 DEG C.Extract is certainly
The light component discharge port 1 of tower top exits into subsequent piece-rate system and obtains deasphalted oil, and deasphalted oil rewinding rate is
1.064kg/h；Raffinate exits into subsequent separation system from the heavy constituent discharge port 15 of bottom of tower and obtains pitch.Extraction tower is connected
Continuous operation 300 hours, component Internal baffle do not find that heavy oil accumulates.
Product yield and property are shown in Table 2.
Comparative example 1
According to the method and extraction tower of embodiment 3, unlike, extracting tower packing extracting Disengagement zone use specification for 25 ×
The ladder ring packing of 12.5 × 0.5mm, heat exchanger used are usual heat exchanger.Extraction tower is operated continuously 300 hours, some are filled out
Heavy oil accumulation is found on material.
Deasphalted oil rewinding rate is 0.828kg/h, and product yield and property are shown in Table 2.
Table 1
| Residual oil property | Numerical value |
| Density (20 DEG C), g/cm3 | 0.9641 |
| Viscosity (100 DEG C), mm2/s | 159.48 |
| Carbon residue, weight % | 20.4 |
| Heavy metal, μ g/g | 80 |
Table 2
Pumping can more effectively be improved using the method for solvent deasphalting extraction tower provided by the invention and solvent deasphalting
Put forward effect.It is compared with existing filler tower structure, the extraction effect of extraction tower of the invention and method for extracting can improve at least
20%.
Claims (10)
1. a kind of solvent deasphalting extraction tower, the extraction tower include：Light component discharge port（1）, tower body（2）With heavy constituent discharge port
（15）；Light component discharge port（1）It is arranged in tower body（2）Top, heavy constituent discharge port（15）It is arranged in tower body（2）Bottom；
It is characterized in that, tower body（2）Inner space from top to bottom successively be equipped with filler extract Disengagement zone（3）, solvent distribute area
（13）With heavy constituent collecting region（16）；
Filler extracts Disengagement zone（3）Inner space include sedimentation separation area and solvent counter current extracting area, the sedimentation separation area
The top for extracting area in the solvent counter current is set, is additionally provided between the sedimentation separation area and solvent counter current extracting area
Heavy oil feed pipe（18）With heavy oil fluid distributor（7）；Heat exchanger is equipped in the sedimentation separation area（5）With at least one set of filler
Component, the solvent counter current extract the supporting beam of the filler component that multigroup stacking is equipped in area and the fixed filler component
（11）；
Wherein, the filler component includes the baffle of multiple placements that are mutually parallel（23）, there are space, shapes between baffle and baffle
The coating region of separation is stripped at raw material；Multiple baffles（23）Be arranged parallel to each other into it is multiple rows of, difference row it is described
Baffle-plate misplacement arranges；
Heat exchanger（5）Including carrying heat exchange baffle（27）Vertical heat exchanger tube（4）；Exchange heat baffle（27）In vertical heat exchanger tube（4）
On have multiple and be mutually parallel, adjacent vertical heat exchanger tube（4）On heat exchange baffle（27）It is staggered between each other.
2. extraction tower according to claim 1, wherein the filler component includes annular sidewall（24）It parallel is put with multiple
The support plate muscle set（25）；Baffle（23）With support plate muscle（25）It is arranged in annular sidewall（24）In the cylinder surrounded, support
Plate muscle（25）With baffle（23）Vertical connection is used to support baffle（23）And by baffle（23）Fixed to annular sidewall（24）On.
3. extraction tower according to claim 2, wherein baffle（23）Acute angle β with horizontal plane is 30-70 °；Baffle
（23）For rectangle or arc, baffle（23）Length-width ratio be 4-15:1, the width of baffle is 10-400mm；Adjacent, parallel gear
Plate（23）Between vertical interval be 20-300mm, the baffle of arranged adjacent（23）Between spacing and baffle（23）The ratio of width be
0.1-0.5：1.
4. according to the extraction tower described in any one of claim 1-3, wherein be equipped with the first filler in the sedimentation separation area
Component（6）；The inner space in solvent counter current extracting area is equipped with the second filler component from top to bottom（8）, third filler component
（9）With the 4th filler component（10）.
5. according to the extraction tower described in any one of claim 1-3, wherein heat exchanger（5）Including heat transferring medium collecting pipe
（19）, heat transferring medium distribution pipe（22）And vertical heat exchanger tube（4）It is connected to heat transferring medium collecting pipe（19）It is distributed with heat transferring medium
Pipe（22）.
6. extraction tower according to claim 5, wherein adjacent, parallel heat exchange baffle（27）Between spacing be 20-300
Mm, exchange heat baffle（27）Acute angle α with horizontal plane is 30-70 °.
7. according to the extraction tower described in any one of claim 1-3, wherein solvent distributes area（13）It is arranged in supporting beam
（11）Lower section, solvent distribute area（13）It is interior to be equipped with distributor（12）With solvent feed pipe（17）；Heavy constituent collecting region（16）If
It sets in distributor（12）Lower section, with heavy constituent discharge port（15）Connection.
8. a kind of method of solvent deasphalting, solvent deasphalting extracting of this method described in any one of claim 1-7
It is carried out in tower, including：The filler that the mixed liquor of solvent and heavy oil is added to the solvent deasphalting extraction tower extracts Disengagement zone, with
Extract the asphalt component in the heavy oil.
9. according to the method described in claim 8, wherein, the temperature at the top of the solvent deasphalting extraction tower is 60-190
DEG C, the temperature of the bottom of the solvent deasphalting extraction tower is 70-210 DEG C；In terms of gauge pressure, the solvent deasphalting extraction tower
Internal pressure is 2-10MPa.
10. method according to claim 8 or claim 9, wherein the solvent is C3-C7 alkane；The heavy oil is residual oil, subtracts
Press at least one of residual oil, viscous crude and inferior heavy oil；The weight ratio of the solvent and heavy oil is 3-12：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107970643B (en) * | 2016-10-25 | 2020-06-12 | 中国石油化工股份有限公司 | Solvent deasphalting extractor and solvent extraction deasphalting method |
| CN108203597A (en) * | 2016-12-19 | 2018-06-26 | 中国石油天然气股份有限公司 | Solvent deasphalting process for inferior heavy oil |
| CN112680242B (en) * | 2019-10-18 | 2022-12-13 | 中国石油化工股份有限公司 | Extraction tower top internal member, extraction tower and solvent deasphalting extraction method |
| CN112370814A (en) * | 2020-10-29 | 2021-02-19 | 中国石油化工股份有限公司 | Filler extraction tower, application thereof and residual oil solvent deasphalting method |
| WO2022089609A1 (en) * | 2020-10-29 | 2022-05-05 | 中国石油化工股份有限公司 | Grid packing unit, structured packing composed of same, and packing extraction tower and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3811844A (en) * | 1973-02-22 | 1974-05-21 | Foster Wheeler Corp | Rotating disc contactor draw-off system |
| US4088540A (en) * | 1976-11-05 | 1978-05-09 | Uop Inc. | Solvent deasphalting apparatus |
| CN101045882A (en) * | 2006-03-31 | 2007-10-03 | 中国石油化工股份有限公司 | Heating method for extruction column top in solvent de-asphalting apparatus |
| CN202590429U (en) * | 2012-05-31 | 2012-12-12 | 北京泽华化学工程有限公司 | Filling extracting tower provided with redistributor and / or vertical baffles |
| CN203545942U (en) * | 2013-11-03 | 2014-04-16 | 中国石油化工股份有限公司 | Solvent deasphalting device |
-
2014
- 2014-10-15 CN CN201410543556.5A patent/CN105567300B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3811844A (en) * | 1973-02-22 | 1974-05-21 | Foster Wheeler Corp | Rotating disc contactor draw-off system |
| US4088540A (en) * | 1976-11-05 | 1978-05-09 | Uop Inc. | Solvent deasphalting apparatus |
| CN101045882A (en) * | 2006-03-31 | 2007-10-03 | 中国石油化工股份有限公司 | Heating method for extruction column top in solvent de-asphalting apparatus |
| CN202590429U (en) * | 2012-05-31 | 2012-12-12 | 北京泽华化学工程有限公司 | Filling extracting tower provided with redistributor and / or vertical baffles |
| CN203545942U (en) * | 2013-11-03 | 2014-04-16 | 中国石油化工股份有限公司 | Solvent deasphalting device |
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