CN106512867A - Gas-liquid-solid multiphase flow reactor and filter arrangement method thereof - Google Patents
Gas-liquid-solid multiphase flow reactor and filter arrangement method thereof Download PDFInfo
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- CN106512867A CN106512867A CN201510580499.2A CN201510580499A CN106512867A CN 106512867 A CN106512867 A CN 106512867A CN 201510580499 A CN201510580499 A CN 201510580499A CN 106512867 A CN106512867 A CN 106512867A
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Abstract
The invention discloses a gas-liquid-solid multiphase flow reactor and a filter arrangement method thereof. The gas-liquid-solid multiphase flow reactor comprises a reactor body (1) and a filter (2) located in the reactor body (1). The reactor is characterized in that the filter (2) includes a plurality of filtration components (21) arranged in a circle along the circumferential direction, wherein the center of each filtration component (21) avoids areas with slow slurry flow rate. During filter arrangement, the invention gives consideration to the slurry flow rate, solid holdup and other hydrodynamic factors in the filter body, as areas with slow slurry flow rate are avoided, a filter cake formed on the filter adopting cross flow filtration can be flushed timely without rapid thickening, also by avoiding the high solid holdup areas, rapid filter cake thickening can also be avoided, thus increasing the filtration capacity and stable filtration time of the filter, and the filtration performance of the filter can be improved significantly.
Description
Technical field
The present invention relates to the filtration art of gas-liquid-solid multiphase flow reactor, in particular it relates to a kind of gas-liquid-solid
The method for arranging of filter in multiphase flow reactor, and using the gas-liquid-solid multiphase flow reaction of the method
Device.
Background technology
In the reaction system of gas-liquid-solid multiphase flow, such as F- T synthesis paste state bed reactor, reacting gas is from anti-
Answer device bottom to enter, gas-liquid-solid three-phase bed formed with solid catalyst and liquid product, be to keep liquid level,
These liquid products need to carry out separating with solid catalyst using filter method and outflow reactor.Filter
Method is divided into two kinds of technologies of built-in filtration and outer filtration again.Outer filtration is referred to the multiphase flow thing in reactor
Separated in the filter that pastern separates outside reactor, it is remaining including solid particle after the completion of separation
Catalyst needs to return in interior material and participate in reactor reaction, and the advantage of outer filtering technique is outer mistake
Filter can repair and replacement online, but have the disadvantage complex structure, operation and maintenance high cost.Industry at present
Production large-scale multiphase flow reactor mostly adopt built-in filter technology, will filter assemblies be placed into instead
Answer in device, serosity is separated to into reaction by the pipeline with filter element connection using the technological means of cross flow filter
Outside device, interior filter assemblies simple structure is easy to operate, however it is necessary that enough filter areas and rational
Filter element preferred arrangement, it is ensured that interior filter assemblies can leach serosity steadily in the long term, has the disadvantage to change online
Filter assemblies.
Meanwhile, mass transfer, heat-transfer effect will be ensured in gas-liquid-solid multiphase flow reactor, solid particle is also required
Suspended state to be in, under the conditions of certain empty tower gas velocity, i.e., will not be entrained out reactor, also not
A large amount of depositions can occur.50 microns of mean particle size are required typically, while less than 20 microns
Granule<5%.In the running of reactor, sub-fraction catalyst granules can also because of physical abrasion or
There is broken, some even less than 5 microns of the broken fine grained for falling in the reasons such as chemical stress, may block
Filter duct, therefore, the specification of structure and filtration space to filter element has very high requirement,
Typically need to be using sintering metal, sintered metal mesh or ceramic capillary filter etc..
In disclosed in Chinese patent application CN101396647A, filter core is substantially all in reactor
Nearby annular is evenly arranged wall.As filter element is only to be uniformly distributed near wall, do not make full use of
The area of section of whole reactor, is likely to result in filter area deficiency or arrangement pitch is unsatisfactory for requirement etc.
Problem.Less, the filtration stability to filter additionally, due to the factor for considering inside reactor multiphase flow
Can have an impact.
The content of the invention
It is an object of the present invention to provide a kind of gas-liquid-solid multiphase flow reactor, the filtration in the reactor
Device connection and reasonable arrangement, can lift the strainability of filter.
It is a further object to provide a kind of arrangement of gas-liquid-solid multiphase flow reactor internal filter
Method, the method for arranging are rationally ingenious, can lift the strainability of filter.
To achieve these goals, according to an aspect of the present invention, there is provided a kind of gas-liquid-solid multiphase flow is anti-
Device, including reactor body and the filter in the reactor body, the filter is answered to include institute
The multiple filter assemblies of the circumference in multi-turn arrangement of reactor are stated, the center of wherein each filter assemblies is kept away
The slurry flow rate relatively higher region of slow and/or solid holdup is opened, wherein
The slower region of the slurry flow rate refers to：Flow velocity is in the region of 0-10cm/s；The solid holdup is higher
Region refer to：Solids content concn 5% area above higher than reactor center solids content concn.
Preferably, the slower region of the slurry flow rate meets：0.75R≤rd≤ 0.85R, wherein, R
For the radius of the reactor body, rdIt is the slower region of slurry flow rate to the reactor body center
Distance.
Preferably, the higher region of the solid holdup meets：0≤rb≤ 40mm, rbFor the filtration group
Minimum radial distance of the outward flange of part apart from the medial wall of the reactor body, wherein the reactor
The radius R ＞ 300mm of body.
Preferably, integrally to avoid slurry flow rate relatively slow and/or solid holdup higher for each described filter assemblies
Region.
Preferably, the multi-turn filter assemblies are included positioned at outermost first lap and adjacent with the first lap
The second circle, wherein each filter assemblies is located at outside the slower region of the slurry flow rate in the first lap
The higher region of the higher solid holdup of solid holdup is avoided at the center of side and each filter assemblies, and described
In second circle, each filter assemblies is located at the slower area inside of the slurry flow rate.
Preferably, the first lap is arranged in the first circumference, first circumference be located at the slurry flow rate compared with
Between the higher region of slow region and the solid holdup, second circle is arranged in the second circumference, and this
Two circumference are located at the slower area inside of the slurry flow rate, and meet：0.65R<r2<0.75R, its
Middle r2For the distance of second circumference to the reactor body center.
Preferably, also including the n-th circle, the circumference of the n-th circle arrangement meets the multi-turn filter assemblies：
[0.65-0.1(n-2)]R<rn<[0.75-0.1 (n-2)] R, wherein n >=3, wherein rnFor the circle of the n-th circle arrangement
The distance at the thoughtful reactor body center.
Preferably, the circumference of n-th circle meets：rn>0.2R。
Preferably, multiple filter elements being arranged in parallel are parallel with the filter assemblies, the filter assemblies
Circumscribed circle diameter is D, a diameter of d of the filter element, with described in two adjacent in circle or in adjacent turn
The centre-to-centre spacing of filter assemblies is L, and meets L >=D+2d.
Preferably, the centre-to-centre spacing of the two neighboring described filter element in the filter assemblies is t, and is met
T ＜ 0.8D, and 5d >=t >=2.5d.
According to a further aspect in the invention, there is provided the arrangement of filter in a kind of gas-liquid-solid multiphase flow reactor
Method, the method for arranging include：Determine the slower slurry flow rate of slurry flow rate in reactor body compared with
The higher region of slow and/or solid holdup, by the multiple filter assemblies in the filter circumferentially in circle cloth
Put, and cause the center of each filter assemblies to avoid that the slurry flow rate is relatively slow and/or solid holdup is higher
Region arrangement.
Preferably, the slower region of the slurry flow rate meets：0.75R≤rd≤ 0.85R, wherein, R
For the radius of the reactor body, rdIt is the slower region of slurry flow rate to the reactor body center
Distance.
Preferably, the higher region of the solid holdup meets：0≤rb≤ 40mm, rbFor the filtration group
Most short radial distance of the outward flange of part apart from the medial wall of the reactor body, wherein the reactor
The radius R ＞ 300mm of body.
Preferably so that each described filter assemblies integrally avoids slurry flow rate relatively slow and/or solid holdup
Higher region.
By above-mentioned technical proposal, the present invention is when the arrangement of filter is carried out, it is contemplated that reactor gas
The hydrodynamics state of the solid bed of liquid, wherein the slower region of flowing velocity is avoided, using cross-flow
The filter cake formed on the filter of filter can be obtained serosity in time and be washed away, without quickly thickening,
So as to the filter capacity for increasing filter and the stable time filtered, the strainability of filter is obtained significantly
Lifted.And avoid the higher region of solid holdup, it is also possible to avoid the filter cake on filter assemblies from quickly being thickened,
So as to ensure the filter efficiency of filter assemblies.
Filter is carried out after blowback in addition, in the filter cake got off from filter element blowback, contain substantial amounts of solid
Grain, if filter assemblies are arranged in the region that flow velocity is relatively low or solid holdup is higher, these filter cakes can not
Reaction is participated in by serosity or gas rapid dispersion, it is more likely that after implementing again to filter after filter blowback
It is adsorbed onto outside filter element quickly, causes filter cake thickness quickly to increase, so can also affects the normal mistake of filter
Filter, reduces its filter capacity.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of description, with
Detailed description below is used for explaining the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is that the cross section structure of the gas-liquid-solid multiphase flow reactor that the preferred embodiment for the present invention is provided is illustrated
Figure；
Fig. 2 is the cross section structure schematic diagram of the filter assemblies provided in one embodiment of the present invention；
Fig. 3 is the cross section structure schematic diagram of the filter assemblies that another embodiment of the present invention is provided；
Fig. 4 is the structural representation of the filter assemblies connected by house steward in the preferred embodiment for the present invention；
Fig. 5 is that the cross section structure of the gas-liquid-solid multiphase flow reactor that the preferred embodiment of the present invention is provided is illustrated
Figure；
Fig. 6 is slurry stream inside the reactor body tested when empty tower gas velocity is 0.1,0.2 and 0.3m/s
Speed and the functional arrangement in region；
Fig. 7 is that empty tower gas velocity is respectively multiphase inside the reactor body tested when 0.1,0.2 and 0.3m/s
The Gas content of stream and the functional arrangement in region.
Description of reference numerals
1 reactor body, 2 filter
21 filter assemblies, 22 filter element
24 times headers of header on 23
26 times house stewards of house steward on 25
31 first lap 32 second is enclosed
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Specific embodiment described herein is merely to illustrate and explains the present invention, is not limited to this
It is bright.
In the present invention, in the case where contrary explanation is not made, the noun of locality for using such as " upper and lower " is
Defined on the basis of the page of Fig. 4, in addition " inside and outside " refer to the interior of corresponding component profile and
Outward.
As shown in Figures 1 to 7, the present invention provides a kind of cloth of filter in gas-liquid-solid multiphase flow reactor
Put method and the gas-liquid-solid multiphase flow reactor using the method for arranging, such as F- T synthesis slurry reactor
Device.Wherein, gas-liquid-solid multiphase flow reactor includes reactor body 1 and is located in the reactor body 1
Filter 2, i.e., the gas-liquid-solid multiphase flow reactor by the way of internal cross flow filter to by serosity from
Isolate the inside of reactor body 1.
In order to lift the strainability of filter 2, the present invention when the arrangement of filter is carried out, not with
It is intended to be arranged in filter body 1, but take into account the fluid of multiphase flow in filter body 1
Impact of the mechanical characteristic to the strainability of filter 2, for the arrangement of the employing differentiation of zones of different
Mode, so as to lift the strainability of filter 2.
Specifically, the method for arranging that the present invention is provided includes：Determine the slurry flow rate in reactor body 1
Slower region, by the multiple filter assemblies 21 in filter along reactor body 1 circumference be in multi-turn
Arrangement, the wherein radially spaced setting of multi-turn filter assemblies, and with the multiple filter assemblies 21 in enclosing
Positioned at same circumference.And cause the center of each filter assemblies 21 to avoid the slower area of slurry flow rate
Domain is arranged.That is, in the gas-liquid-solid multiphase flow reactor that the present invention is provided, filter 2 is included circumferentially
Multiple filter assemblies 21 in circle arrangement, slurry flow rate is avoided at the wherein center of each filter assemblies 21
Slower region.
Therefore, in the inventive solutions, the present invention considers the factor of the flowing velocity of serosity,
The region slower due to avoiding flowing velocity, using the filter cake energy formed on the filter of cross flow filter
Access, without quickly thickening, so as to increase filtration
The filter capacity of device and the stable time filtered, the strainability of filter is significantly improved.It is right in addition
After filter carries out blowback, contain substantial amounts of solid particle in the filter cake got off from filter element blowback, if mistake
Filter module is arranged in the relatively low region of flow velocity, and these filter cakes can not be joined by serosity or gas rapid dispersion
With reaction, it is more likely that be adsorbed onto outside filter element quickly after being filtered after filter implements blowback again, caused
Filter cake thickness quickly increases, and so can also affect the normal filtration of filter, reduces its filter capacity.
Additionally, invention also contemplates that in serosity solid holdup factor.This is because, be located at solid holdup compared with
The filter cake outside filter in high region is quickly thickened, and as solid holdup is high, serosity is separated
Efficiency will substantially reduce, so as to cause the filter strainability in the region poor.Therefore, this
The method for arranging of bright offer also includes：Determine the higher region of solid holdup in reactor body 1, and will
Avoid the higher region arrangement of solid holdup in the center of each filter assemblies 2.That is, the gas for providing in the present invention
In the solid multiphase flow reactor of liquid, the higher region of solid holdup is also avoided at the center of each filter assemblies 2, from
And lift the strainability of filter 2.
Wherein, the region of " slurry flow rate is slower " in the present invention refers to：Flow velocity in 0-10cm/s regions,
It is preferred that 0-5cm/s regions, and the higher region of solid holdup refers to：Solid concentration is higher than reactor center concentration
More than 5% region, due to gas holdup+solid content=100%, it may also be said to which gas holdup compares reactor center
The region of gas holdup low more than 5%.
In addition, it is higher to avoid the relatively low solid holdup of slurry flow rate using the center of filter assemblies 2 in the present invention
The saying in region, allows for filter assemblies and has circumscribed circle diameter D, i.e. the filter assemblies itself are also
Extend D/2, in other words, same filtration to reactor center and reactor wall respectively by midpoint of center
Component is provided with two borders in the region that should be avoided closer and farther from above-mentioned two simultaneously, away from this two
The boundary effect in individual region is more preferable.Therefore, take the center of filter assemblies 2 for reference point be in order to it is average this
The effect for avoiding the two regions of individual filter assemblies.
Again therefore, in a preferred embodiment of the invention, in order to further solve filter assemblies circumscribed circle
The impact of diameter D, the present invention were being carried out for the region that slurry flow rate is relatively low and/or solid holdup is higher
During the arrangement of filter component, it is preferable that so that each filter assemblies integrally to avoid slurry flow rate relatively slow and/or solid
Containing the higher region of rate, i.e. corresponding above-mentioned zone is avoided in the optional position of filter assemblies, so as to take
Obtain best effect.Now, if when filter assemblies 21 are arranged, being with the center of filter assemblies 21
If the slurry flow rate relatively higher region of slow or solid holdup is avoided for reference point, then for filter assemblies
It is overall to avoid accordingly carrying out region, then need on the region positioned on the basis of center, correspondingly plus
Go up or deduct at least D/2, normally in order in order to be effective, it is preferable to D≤0.1R.
Further, in order to make full use of the space inside reactor body 1, the arrangement that the present invention is provided
Method is additionally included in reactor body 1 filter assemblies 21 for arranging the radially spaced arrangement of multi-turn.Exist
In the gas-liquid-solid multiphase flow reactor that the present invention is provided, filter 2 includes the multi-turn of radially spaced arrangement
Filter assemblies 21.Therefore the filter assemblies 21 of the radially spaced setting of multi-turn can make full use of reactor
Space in body 1, dramatically increases the filter area of filter 2, carries so as to further increase the present invention
For filter 2 strainability.Wherein it is preferred to, multi-turn filter assemblies 21 all should in arrangement
Avoid the higher region of the slower region of slurry flow rate and solid holdup simultaneously, to ensure carrying for strainability
Rise.
Based on above-mentioned design of the invention, slurry stream can accurately be determined by modes such as test, theoretical derivations
The higher region of the slower region of speed and solid holdup.Description first determines the side in the slower region of slurry flow rate
Formula.
As shown in fig. 6, being tested so that empty tower gas velocity is for 0.1,0.2 and 0.3m/s as an example, slurry flow rate
(list of references is measured using Pavlov pipes：Zhang Yu, Wang Lijun, Li Xi. turbulence slurry bed system fluid
The radial distribution [J] of mechanics study (II) axial direction slurry velocity. Journal of Chemical Industry and Engineering, 2008,59 (12):3003-
3008), in reactor body 1 of the radius for R, it can be seen that under different empty tower gas velocities, slurry
Liquid flowing velocity is almost nil at the region of 0.8R or so, and when more than 0.8R, serosity starts stream again
It is dynamic and contrary with flow direction before.Therefore can draw slurry flow rate mentioned in the present invention compared with
Positioned at 0.8R or so, in this region, the strainability of filter 2 declines substantially in low region.
Therefore when filter 2 is arranged, it should so that filter assemblies 21 avoid the region.Can additionally enter
Test under row other empty tower gas velocities is verifying this conclusion.
Specifically, the slower region of slurry flow rate meets：0.75R≦rd0.85R, wherein, rdFor flow velocity
Distance of the slower region to 1 center of reactor body.It is highly preferred that the region meets：0.77R≦rd
The region of 0.82R, particularly 0.8R, i.e. needs avoid the arrangement on the region in this region from filtering
Component 21.In other words, the slower radial zone of slurry flow rate be by flow velocity be 0 region centered on area
Domain, flow velocity be zero region substantially in 0.8R, centered on herein, respectively to reactor center and reaction
Device inwall direction each extend the region definition of substantially 0.05R then can for preferred flow velocity in the present invention compared with
Slow region, i.e. 0.75R≤rd≤ 0.85R, flow velocity is in 0-10cm/s in the region.
As for the determination in the higher region of solid holdup, can be with reference to gas holdup in multiphase flow as shown in Figure 7
Test verified that wherein gas holdup and solid holdup substantially have reference value in inverse ratio.Wherein contain admittedly
The result of the test of rate is similar with result by references, relatively low in the center solid holdup of reactor body 1,
Nearby solid holdup is higher for the wall of reactor body 1, specifically, in the region solid holdup more than 0.95R
Highest.Wherein in order to further verify the conclusion, according to hydromechanical boundary layer theory, near anti-
Answer due to the presence of serosity boundary region at the wall of device body 1, gas holdup also larger can be reduced, i.e., herein
Three-phase flow in solid holdup can be higher.And as shown in fig. 7, it is 0.1,0.2 and 0.3m/s in empty tower gas velocity
When, the change in location of the gas holdup of reactor radial direction with measurement point, in the radial direction gas near reactor wall
Low containing rate, it is that solid holdup is higher to correspond to serosity or concentration of slurry therewith.Therefore, in arrangement filter assemblies
When, it is required that filter assemblies are spaced apart with reactor wall, and now, described solid holdup in the present invention
Higher region needs to meet, 0≤rb≤ 40mm, rbIt is filter assemblies outward flange apart from wall of reactor
Most short radial distance, solid concentration is higher than reactor center concentration by more than 5% in the region.In addition
The generally radius R ＞ 300mm of reactor.
Can during the higher region of the slower region of above-mentioned determination slurry flow rate and solid holdup
Go out, the slower region of slurry flow rate is located at the inner side in the higher region of solid holdup, in order that multi-turn arrangement
Filter assemblies 21 in often circle simultaneously meet and avoid the slower region of slurry flow rate and solid holdup is higher
Area requirement, it is preferable that multi-turn filter assemblies 21 include positioned at outermost first lap 31 and with this
The second adjacent circle 32 of one circle 31, wherein, by each the filtration group in outermost first lap 31
Part be centrally disposed on the slower areas outside of slurry flow rate and to avoid the higher solid holdup of solid holdup higher
Region arrangement, i.e., the higher region by avoiding the slower region of slurry flow rate and solid holdup, and will
Each filter assemblies in adjacent with the first lap 31 second circle 32 be centrally disposed on slurry flow rate compared with
Each filter assemblies in the inner side in slow region, so second circle 32 equally can avoid slurry simultaneously
The higher region of the slower region of flow velocity and solid holdup.
Wherein as a kind of preferred implementation, first lap 31 is arranged in into the first circumference (filter assemblies
21 centrally along the first circumference), first circumference is located at the slower region of slurry flow rate and solid holdup
Between higher region, and meet：0.85R<r1<0.95R, wherein r1It is the first circumference to reactor
Distance in body 1.And the second circle 32 is arranged in into the second circumference, second circumference is located at slurry stream
The slower area inside of speed, and meet：0.65R<r2<0.75R, wherein r2Be the second circumference to reaction
The distance at 1 center of device body.As such, it is possible to so that the center of two circle filter assemblies 21 can be simultaneously
Satisfaction avoids the requirement in the higher region of the slower region of slurry flow rate and solid holdup, and can be fully sharp
With the space of reactor body 1, it is ensured that strainability.
Additionally, according to the specification of reactor body 1, more multi-turn filter assemblies 21 can also be set,
Now in the method for arranging that the present invention is provided, arrangement n-th is enclosed the circumference of filter assemblies 21 and is met：
[0.65-0.1(n-2)]R<rn<[0.75-0.1 (n-2)] R, wherein n>2, wherein rnFor the region of the n-th circle arrangement
To the distance at 1 center of reactor body.For example as shown in figure 1, the 3rd each filtration group enclosed in 33
The circumference of the center arrangement of part 21 meets：0.55<r5<0.65.The like, to realize uniformly fully
Using the space in filter body 1.It should be noted that the above-mentioned first lap of the present invention, the second circle
The region at the center of each filter assemblies in corresponding circle is referred to the position of the n-th circle.
Further, since the slurry flow rate at 1 center of reactor body is too fast, in order to avoid affecting serosity to enter
The efficiency of filter 2, therefore should also avoid arranging filter assemblies 21 in central area.For this purpose, preferably,
The circumference of the n-th circle meets：rn>0.2R.That is, as shown in figure 1, the center of all filter assemblies 21 is equal
The outside of 0.2R in diagram should be located at.
As shown in Figure 2, Figure 3 and Figure 4, in a preferred embodiment of this invention, in filter assemblies 21 simultaneously
Multiple filter elements 22 being arranged in parallel are associated with, the quantity of the filter element 22 in each component 21 is 1-12,
Specifically multiple filter elements 22 can be made using metal or ceramic capillary membrane tube etc., same filter assemblies 21
Interior multiple filter elements 22 are connected in parallel by upper header 23 and lower header 24, with by upper and lower remittance
Pipe realizes the filtration work of same filter assemblies 21 and blowback work.In addition, the multiple mistakes in same circle
Filter component 21 can also be connected in parallel by upper house steward 25 and lower house steward 26, to be filtered simultaneously
Work with blowback.In concrete placement process, two up and down of the filter element 22 in each filter assemblies 21
Outlet is connected respectively on the upper and lower header of same filter assemblies 21, if each circle filter assemblies 21
Quantity be 3-6, then these headers can be directly connected to the filtration outside reactor or blowback pipeline, such as
Fruit filter assemblies 21 then need at least 2 filter assemblies 21 (maximum less than 10) more than 6
Become a big group, the upper and lower header of each big group of filter assemblies 21 needs to be connected to upper and lower
Draw reactor body 1 after house steward is upper again.
Wherein, the circumscribed circle diameter of filter assemblies 21 is D, a diameter of d of filter element 22, in order to abundant
Play the function of each filter assemblies 21, it is preferable that with two filtrations adjacent in circle or in adjacent turn
The centre-to-centre spacing of component 21 is L, and meets L >=D+2d.So, each filter assemblies 21 can be with
Fully the region around which is filtered, without arranging that excessive filter assemblies 21 are caused to reaction
The excessive occupancy of 1 inner space of device body.In addition to the function of each filter element 22 is given full play to, it is excellent
Selection of land, the centre-to-centre spacing of the two neighboring filter element 22 in same filter assemblies 21 is t, and meets t ＜ 0.8D,
And 5d >=t >=2.5d, no matter one group of three filter elements so as shown in Figure 2 or as shown in Figure 3 four
One group of filter element, effect for each filter element 22 that fully can volatilize, without excessive arrangement filter element.Separately
Outward, the circumscribed circle diameter of filter assemblies 21 is preferably 0.05R≤D≤0.1R, so that filter assemblies 21
During the higher region in the region and solid holdup that avoid slurry flow rate slower at center, its overall strainability
More preferably.
Additionally, the circumscribed circle diameter positioned at the filter assemblies 21 of different circles can be different, institute in filter assemblies
If filter element quantity also can be different, such as less filter element quantity can be set in outer ring, as shown in Figure 2 three
Individual, inner ring then arranges as shown in Figure 3 four of more filter element, can so cause inner ring and outer ring filter element
On filter efficiency and filter cake thicken similar rate.
In a preferred embodiment of the invention, the radius R of reactor body 1>300mm, so,
In order to ensure filter efficiency, the centre-to-centre spacing L >=60mm of the filter assemblies 21 of two adjacent rings, filter element 22
Diameter 15mm >=d >=50mm.Complete in reactor body 1 so as to pass through limited filter core
Multiphase flow complete high efficiency filter.
The present invention is further illustrated with reference to embodiments.
Embodiment 1
Using the radius of the reactor body 1 of the gas-liquid-solid multiphase flow reactor of interior filter separation method
R=1000mm.The specification and filter assemblies 21 of filter element 22 and filter assemblies 21 is in the same footpath of reactor
Fig. 5 is shown in arrangement under section.
Wherein, using the arrangement of two circles.The center arrangement of each filter assemblies 21 in first lap 31
The first circumference meet r1=900mm.The center arrangement of each filter assemblies 21 in the second circle 32
Second circumference meets r2=700mm.In first lap 31 and the second circle 32 between adjacent filter assemblies 21
Minimum centre-to-centre spacing Lmin=220mm.
The center of wherein each filter assemblies 21 of first lap and the second circle avoids 0.75R≤rd≤
The slower region of the slurry flow rate of 0.85R (that is, 750mm-850mm), the in addition mistake of first lap 31
Radial distance of the outward flange of filter component apart from reactor medial wall is rb=45mm, meets 0≤rb≤
40mm needs the requirement in the higher region of the solid holdup avoided.
The pore size filter specification of the filter element 22 for being used is 20 μm, and outside diameter d=20mm, length are 1.2m.
Centre-to-centre spacing t=60mm in the middle of filter element 22, the circumscribed circle diameter D of filter assemblies 21 is 95mm.This
Sample, no matter first lap or the filter assemblies in the second circle, except center avoids the slower area of slurry flow rate
Domain, which integrally also all avoids the slower region of serosity, and effect is good.
As the filter element group quantity of first lap is 12 (more than 6), therefore it is divided into 4 big groups, often
Big group is made up of 3 filter element groups, and per group of upper and lower header is connected on upper and lower house steward, is finally connected
Filtration blowback pipeline outside reactor.
The filter element group quantity of the second circle is 8, (more than 6), therefore is divided into 2 big groups, per big group
It is made up of 4 filter element groups, per group of upper and lower header is connected on upper and lower house steward, is connected to reactor sheet
Outside body 1.
In the present embodiment, reactor is operated under 3.0MPa at 250-270 DEG C, filter according to
The filtration parameter and program of setting carries out filter operation, and serosity filter capacity can be stablized in 2.5-3.0t/h
Between, filter capacity is stable, and filter usage cycles can reach more than 6000 hours.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited
Detail in above-mentioned embodiment, in the range of the technology design of the present invention, can be to the present invention
Technical scheme carry out various simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned specific embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, the present invention are no longer separately illustrated to various possible compound modes.
Additionally, combination in any between a variety of embodiments of the present invention, can also be carried out, as long as its
Without prejudice to the thought of the present invention, which should equally be considered as content disclosed in this invention.
Claims (14)
1. a kind of gas-liquid-solid multiphase flow reactor, including reactor body (1) and be located at the reactor sheet
Filter (2) in body (1), it is characterised in that the filter (2) is included along the reactor
Multiple filter assemblies (21) of the circumference in multi-turn arrangement, the wherein center of each filter assemblies (21)
The slurry flow rate relatively higher region of slow and/or solid holdup is avoided, wherein
The slower region of the slurry flow rate refers to：Flow velocity is in the region of 0-10cm/s；The solid holdup is higher
Region refer to：The region of solids content concn higher than reactor center solids content concn more than 5%.
2. gas-liquid-solid multiphase flow reactor according to claim 1, it is characterised in that the slurry
The slower region of flow velocity meets：0.75R≤rd≤ 0.85R, wherein, R is the reactor body (1)
Radius, rdFor the radial distance in the slower region of slurry flow rate to the reactor body (1) center.
3. gas-liquid-solid multiphase flow reactor according to claim 1, it is characterised in that described solid
The higher region containing rate meets：0≤rb≤ 40mm, rbFor the filter assemblies (21) outward flange away from
From the most short radial distance of the medial wall of the reactor body (1).
4. gas-solid-liquid multiphase flow reactor according to claim 1, it is characterised in that each institute
State filter assemblies (21) and integrally avoid the slurry flow rate relatively higher region of slow and/or solid holdup.
5. the gas-liquid-solid multiphase flow reactor according to any one in claim 1-4, its feature
Be, the multi-turn filter assemblies (21) include positioned at outermost first lap (31) and with this first
The second adjacent circle (32) of circle (31), wherein each filter assemblies (21) in the first lap (31)
Positioned at the slower areas outside of the slurry flow rate and the center of each filter assemblies (21) is avoided
In the higher region of solid holdup, and second circle (32), each filter assemblies (21) are positioned at described
The slower area inside of slurry flow rate.
6. gas-liquid-solid multiphase flow reactor according to claim 5, it is characterised in that described
One circle (31) is arranged in the first circumference, and first circumference is located at the slower region of the slurry flow rate and institute
State between the higher region of solid holdup, second circle (32) is arranged in the second circumference, second circumference
Positioned at the area inside that the slurry flow rate is slower, and meet：0.65R<r2<0.75R, wherein r2For
Distance of second circumference to the reactor body (1) center.
7. gas-liquid-solid multiphase flow reactor according to claim 5, it is characterised in that described many
Also including the n-th circle, the circumference of the n-th circle arrangement meets circle filter assemblies (21)：
[0.65-0.1(n-2)]R<rn<[0.75-0.1 (n-2)] R, wherein n >=3, wherein rnFor the circle of the n-th circle arrangement
The distance at thoughtful reactor body (1) center.
8. gas-liquid-solid multiphase flow reactor according to claim 7, it is characterised in that described n-th
The circumference of circle meets：rn>0.2R。
9. gas-liquid-solid multiphase flow reactor according to claim 5, it is characterised in that the mistake
Multiple filter elements (22) being arranged in parallel are parallel with filter component (21), the filter assemblies (21)
Circumscribed circle diameter is D, a diameter of d of the filter element (22), with circle or adjacent two in adjacent turn
The centre-to-centre spacing of the individual filter assemblies (21) is L, and the centre-to-centre spacing of minimum meets Lmin≥D+2d。
10. gas-liquid-solid multiphase flow reactor according to claim 9, it is characterised in that the mistake
The centre-to-centre spacing of the two neighboring described filter element (22) in filter component (21) is t, and meets t ＜ 0.8D,
And 5d >=t >=2.5d.
The method for arranging of filter in a kind of 11. gas-liquid-solid multiphase flow reactors, it is characterised in that described
Method for arranging includes：
Determine the slurry flow rate relatively higher region of slow and/or solid holdup in reactor body (1),
By the multiple filter assemblies in the filter circumferentially in circle arrangement, and cause each filtration group
The higher region arrangement of the slurry flow rate relatively slow and/or solid holdup is avoided in the center of part (21).
12. method for arranging according to claim 11, it is characterised in that the slurry flow rate compared with
Slow region meets：0.75R≤rd≤ 0.85R, wherein, radiuses of the R for the reactor body (1),
rdFor the distance in the slower region of slurry flow rate to the reactor body (1) center.
13. method for arranging according to claim 11, it is characterised in that the solid holdup is higher
Region meet：0≤rb≤ 40mm, rbFor the filter assemblies outward flange apart from the reactor sheet
The most short radial distance of the medial wall of body (1).
14. method for arranging according to claim 11, it is characterised in that so that each described mistake
The slurry flow rate relatively higher region of slow and/or solid holdup is integrally avoided in filter component (21).
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