CN207025351U - Batch (-type) impregnates rotary drum and batch (-type) dipping systems - Google Patents
Batch (-type) impregnates rotary drum and batch (-type) dipping systems Download PDFInfo
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- CN207025351U CN207025351U CN201720540430.1U CN201720540430U CN207025351U CN 207025351 U CN207025351 U CN 207025351U CN 201720540430 U CN201720540430 U CN 201720540430U CN 207025351 U CN207025351 U CN 207025351U
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- rotary drum
- drum body
- impregnates
- impregnated
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Abstract
It the utility model is related to field of catalyst preparation, disclose a kind of batch (-type) impregnates rotary drum and batch (-type) dipping systems, the impregnates rotary drum includes being used for the hollow rotary drum body (301) for carrying material to be impregnated, at least one retractable material mouth for receiving and/or exporting material to be impregnated is provided with the rotary drum body (301), spray boom (303) is disposed with the rotary drum body (301), at least one atomizer for maceration extract to be injected in surface of material to be impregnated is provided with the spray boom (303), it is characterized in that, the impregnates rotary drum is horizontally disposed with, the axial length of the rotary drum body (301) is 39 with the ratio of radial direction maximum length.The batch (-type) impregnates rotary drum is used to prepare shell profile catalyst with higher shell rate, obtained catalyst strength and ratio of briquetting significantly improve, and are more beneficial for detecting product quality.
Description
Technical field
Field of catalyst preparation is the utility model is related to, in particular it relates to batch (-type) impregnates rotary drum and batch (-type) dipping system
System.
Background technology
In catalyst duct depths, the product molecule of reaction generation such as can not in time spread out and further react,
On the one hand the selectivity of catalyst is influenceed, on the other hand will influence the life-span of catalyst.Especially internally it is diffused as rate-determining steps
Reaction, it is desirable to reaction occur beneficial to reactant and product diffusion position, it is generally desirable to occur in catalyst coating.Separately
Outside, in the cost of catalyst, the large percentage shared by the cost of active component, if by utilization rate it is not high be distributed in duct
The component of depths is moved closer in the region of catalyst coating, can undoubtedly significantly reduce the cost of catalyst, and is advantageous to carry
The activity and selectivity of high catalyst.
This kind of gas-solid-liquid multiphase reaction system, catalysis are synthesized for carrying out Fischer-Tropsch (FT) such as in fixed bed reactors
The particle size of agent is generally several mm, and therefore, influence of the diffusion control to catalytic activity is difficult to avoid that.It should be noted that：By
The heavy paraffinic waxes that FT synthesizes to obtain generally are attached to catalyst surface in the form of liquid, vapour colloidal sol or slurry, to reactant H2With
Diffusions of the CO inside catalyst granules has an impact.In the interior diffusion process of reactant, H2Diffusion velocity it is faster than CO, CO
H is significantly stronger than in the diffusion restriction effect of catalyst particles intragranular2.Because the particle diameter of particle is different, CO concentration inside particle result in
The difference of gradient, it have impact on the combination of CO and metal active centres position so that the H/C adsorbed on activated centre is than increase, carbon
Chain growth probability reduces, and reduces C5+Selectivity.The prior art indicate that the catalyst being evenly distributed relative to active component
For, the catalyst of active component non-uniform Distribution, such as shell profile catalyst (that is, shell type catalyst or eggshell type
Catalyst), because diffusion limitation is small, can significantly increase such as the C in this kind of reaction of F- T synthesis5+Selectivity, reduces methane
Selectivity, is particularly suited for this kind of reaction of F- T synthesis.
CN204911534U discloses a kind of dipping systems, and the dipping systems include maceration extract feed unit, porous carrier
Feed unit, impregnating unit, vacuum unit and drying unit, the maceration extract feed unit are used to carry to the impregnating unit
For maceration extract, the porous carrier feed unit is used to provide porous carrier to the impregnating unit, and the impregnating unit is used for
Maceration extract is set to be contacted with porous carrier, the drying unit is used to the porous carrier through dipping being dried, and the dipping is single
Member includes a kind of dipping rotating cylinder, and the axis of the drum body (301) of the dipping rotating cylinder makes with respect to the horizontal plane to be obliquely installed
Obtain charging aperture (302) and be located at higher axial one end, discharging opening (303) is located at the relatively low axial other end, vacuum lines
(305) connected with vacuum unit.The dipping systems need to be set dipping drum inclination to realize continuous operation.Serialization
In operating process, if aging or failure occurs in a certain component inside impregnates rotary drum, when influenceing product quality, it can continuously produce
Substandard product, and can not effectively distinguish that product where starts to produce is unqualified, it is unfavorable to stabilized product quality.
CN204503105U discloses a kind of impregnates rotary drum, and the impregnates rotary drum includes being used for the hollow rotary drum body for carrying porous carrier
(301) at least one retractable material mouth for receiving and/or exporting porous carrier, is provided with the rotary drum body (301),
Spray boom (303) is disposed with the rotary drum body (301), is provided with the spray boom (303) more for maceration extract to be injected in
At least one atomizer of hole carrier surface, interior be disposed with of the rotary drum body (301) vacuumize for what is vacuumized
Pipeline (304), the vacuum lines (304) are placed adjacent to the inwall of carrying porous carrier in the rotary drum body (301),
And the vacuum lines (304) are enough to make with the distance between inwall of carrying porous carrier in the rotary drum body (301)
Bleeding point on the vacuum lines (304) is landfilled in the layer formed by porous carrier, and is further disclosed described
Rotary drum body (301) is the biconial that taper either shares same cone bottom surface.But this impregnates rotary drum is used to prepare catalysis
During agent, the intensity of catalyst is poor and ratio of briquetting is relatively low.
As can be seen here, it is still desirable to continue to explore the preparation technology and production equipment of shell profile catalyst.
Utility model content
The purpose of this utility model is to provide a kind of batch (-type) impregnates rotary drum and a kind of batch (-type) dipping systems, using this
Batch (-type) impregnates rotary drum or batch (-type) dipping systems can prepare shell profile catalyst with higher shell rate, obtained to urge
Agent intensity and ratio of briquetting significantly improve, and are more beneficial for detecting product quality.
Inventor of the present utility model has found that the axial length and radial direction of existing rotary drum (cone-element) body are most in research process
The ratio of long length is approximately less than 1, and in the dipping rotating cylinder that prior art provides, the general length of drum body is 10-15m, and is turned
The radial diameter of cylinder is arranged to 1m or so, i.e. the ratio of the axial length of drum body and radial direction maximum length is more than 10 more, now
There is the centrifugal force of material in rotary course of the impregnates rotary drum using rotary drum (cone-element) body larger, greatly reduce obtained catalysis
The intensity and ratio of briquetting of agent；In addition, prior art dipping rotating cylinder is obliquely installed to realize continuous operation more, it is of the present utility model
Inventor has found in research process, during continuous operation, if aging or mistake occurs in a certain component inside impregnates rotary drum
Effect, when influenceing product quality, can continuously produce substandard product, and can not effectively distinguish that product where starts to produce does not conform to
Lattice, it is unfavorable to stabilized product quality.And intermittent operation is used, it is more beneficial for monitoring product quality, when a batch materials are asked
During topic, it can remedy in time.Inventor of the present utility model further study show that, using axial length and radial direction maximum length
Ratio be 3-9 rotary drum body, and be horizontally disposed with, not only obtained catalyst has higher shell rate,
And the intensity and ratio of briquetting of catalyst are substantially increased, and product quality can be monitored, when a batch materials go wrong,
It can be remedied in time.Based on this, according to one side of the present utility model, the utility model provides a kind of batch (-type)
Impregnates rotary drum, the impregnates rotary drum include being used for the hollow rotary drum body for carrying material to be impregnated, are provided with the rotary drum body
For receiving and/or exporting at least one retractable material mouth of material to be impregnated, spray boom is disposed with the rotary drum body, it is described
At least one atomizer for maceration extract to be injected in surface of material to be impregnated is provided with spray boom, the impregnates rotary drum is horizontal
Set, the axial length of the rotary drum body and the ratio of radial direction maximum length are 3-9.
Preferably, the axial length of the rotary drum body and the ratio of radial direction maximum length are 3-5.
Preferably, the spray boom is along the axially extending of the rotary drum body；The impregnates rotary drum also includes and the rotary drum
The rotary shaft that body is fixedly connected, the rotary shaft are arranged on the outside of the rotary drum body and along the axial directions of the rotary drum body
Extension.
Preferably, it is provided with lifting blade on the internal face of the rotary drum body.
Preferably, the lifting blade is that sheet is raised, and the sheet projection is towards the edge in rotary drum body cavity direction
Smooth curve.
Preferably, the rotary drum body is elliposoidal.
Preferably, the double top domes of the elliposoidal radially are each provided with a material mouth.
According to second of the present utility model aspect, the utility model provides a kind of batch (-type) dipping systems, the dipping
System includes maceration extract feed unit, impregnating unit and drying unit, and the maceration extract feed unit is used for the dipping
Unit provides maceration extract, and the impregnating unit is used to make maceration extract contact with material to be impregnated, and the drying unit is for will be through
The material of dipping is dried, and the impregnating unit is included according to impregnates rotary drum of the present utility model.
Preferably, the impregnating unit also includes being used for the pedestal for supporting the impregnates rotary drum, and rotary drum body is rotationally
It is connected to the pedestal.
Preferably, the impregnating unit also includes being used for the drive device for driving rotary drum body to rotate.
Preferably, the maceration extract feed unit includes dipping liquid storage tank and for connecting the dipping liquid storage tank and turning
The pipeline of spray boom in drum body.
Preferably, the dipping systems also include material feed unit to be impregnated, and the material feed unit to be impregnated is used for
Material to be impregnated is provided to rotary drum body.
Preferably, the drying unit includes dry zone and distributing device, and the distributing device includes cylinder and is arranged on institute
State at least one retractable entrance on cylinder and at least one retractable outlet, the position of the entrance of the distributing device with it is described
The position of at least one material mouth of impregnates rotary drum is corresponding, to receive the material through dipping for coming from the impregnates rotary drum, institute
The position for stating the outlet of distributing device is enough the material through dipping being transferred to the dry zone.
Under the utility model preferable case, by controlling the axial length of rotary drum body and the ratio of radial direction maximum length
For 3-5, and it is more beneficial for for the raised lifting blade of sheet obtaining the shell profile catalyst with higher shell rate, and
And further improve made from catalyst strength and ratio of briquetting, still more preferably in the case of, limit rotary drum body as elliposoidal
The performance for the shell profile catalyst that dipping systems are prepared can more further be improved.Inventor of the present utility model
Found in research process, by limiting axial length with the ratio of radial direction maximum length as 3-5, and limit lifting blade as sheet
Raised, rotary drum body is that elliposoidal causes the carrier in impregnates rotary drum to have more surface area contacts in motion process
To maceration extract (can by device correct position apparatus for making a video recording is installed, during by lifting blade on reference rotary drum and material movement
The relativeness of institute's area coverage is calculated), it is more beneficial for the preparation of shell profile catalyst.
According to batch (-type) impregnates rotary drum of the present utility model and batch (-type) dipping systems, its operating process is simple and easy to control, fits
Implement in scale.
Brief description of the drawings
Accompanying drawing is to be further understood for providing to of the present utility model, and a part for constitution instruction, and following
Embodiment be used to explain the utility model together, but do not form to limitation of the present utility model.
Fig. 1 is for illustrating the signal according to batch (-type) impregnates rotary drum of the present utility model and batch (-type) dipping systems
Figure.
Fig. 2 is showing for the stirring part that illustrates to set on rotary drum body inwall according to impregnates rotary drum of the present utility model
It is intended to.
Description of reference numerals
101：Material storage tank 201 to be impregnated：Impregnate liquid storage tank
202：Pump 301：Rotary drum body
302：Pedestal 303：Spray boom
304：Lifting blade 305：Rotary shaft
306：Power generating part part 307：Transmission parts
308：First material mouth 309：Second material mouth
401：Dry zone 402：Distributing device
403：Housing
Embodiment
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
In the utility model, " axial direction " and " radial direction " is for rotary drum body, i.e., along the rotation of rotary drum body
Turn center (that is, rotating shaft) direction extension direction be axial direction, and perpendicular to the axial direction be radial direction, it is necessary to illustrate
Be these nouns of locality be served only for illustrate the utility model, be not limited to the utility model.In the utility model, " extremely
It is few one " represent one or more.
According to one side of the present utility model, the utility model provides a kind of batch (-type) impregnates rotary drum, such as Fig. 1 institutes
Show, the impregnates rotary drum includes being used for the hollow rotary drum body 301 for carrying material to be impregnated, is provided with the rotary drum body 301
For receiving and/or exporting at least one retractable material mouth of material to be impregnated, spray boom is disposed with the rotary drum body 301
303, at least one atomizer for maceration extract to be injected in surface of material to be impregnated is provided with the spray boom 303, should
Impregnates rotary drum is horizontally disposed with, and the axial length of the rotary drum body 301 and the ratio of radial direction maximum length are 3-9.
In the utility model, axial length refers respectively to the axle of the internal cavities of rotary drum body 301 with radial direction maximum length
To length and radial direction maximum length.
In the utility model, impregnates rotary drum is horizontally disposed to refer to that the left and right ends of impregnates rotary drum are in same level.This
The setting of utility model impregnates rotary drum allows have certain error, but need to control the difference in height of impregnates rotary drum higher-end and lower end not
More than 10cm.
Impregnates rotary drum provided by the utility model is horizontally disposed with, and inside is not provided with other and enables to material to be impregnated to transport
Dynamic inner member, impregnates rotary drum provided by the utility model is intermittent operation, for example, impregnates rotary drum provided by the utility model
It is horizontally disposed, and prior art dipping rotating cylinder is obliquely installed to realize continuous operation more.During continuous operation, if leaching
There is aging or failure in a certain component inside stain rotary drum, when influenceing product quality, can continuously produce substandard product, and can not
Effectively distinguish that the product produced since where is unqualified, it is unfavorable to stabilized product quality.And intermittent operation is used, more favorably
In monitoring product quality, when a batch materials go wrong, can remedy in time.
As shown in figure 1, the impregnates rotary drum includes being used for the hollow rotary drum body 301 for carrying material to be impregnated.Rotary drum sheet
Body 301 is hollow container, can have variously-shaped, such as biconial of nearly elliposoidal, single taper or shared bottom surface, can be with
For the irregular shape not without special corner angle.In a preferred embodiment, as shown in figure 1, rotary drum body 301 is ellipsoid
Shape.
According to a kind of preferred embodiment of the present utility model, the axial length of the rotary drum body 301 and radially maximum
The ratio of length is 3-5.Using preferred embodiment of the present utility model, can further avoid sharing bottom in the prior art
In diconical dipping body (ratio of axial length and radial direction maximum length the is less than 1) rotary course in face, material by compared with
Big inertia force effect, is more beneficial for avoiding the reduction of catalyst strength and ratio of briquetting.And axial length and the footpath of rotary drum body 301
To maximum length ratio it is excessive when, be unfavorable for the dipping of active component, be unfavorable for preparing the higher catalyst of shell rate.
As shown in figure 1, it is additionally provided with rotary drum body 301 for receiving and/or exporting at least one of material to be impregnated
Retractable material mouth.It is " retractable " to represent that the material mouth have unlatching and closure two states.The quantity of the material mouth can be with
Selected according to the concrete shape of the charging of material to be impregnated and discharge method and rotary drum body 301.Specifically, Ke Yishe
A material mouth is put, the material mouth is used to receive material to be impregnated, and after the completion of dipping, by the output of the material through dipping.Turning
When drum body 301 is elliposoidal, two top domes of elliposoidal radially are preferably each provided with a material mouth.Specifically,
As shown in figure 1, when rotary drum body 301 is elliposoidal, it is provided with the upper top dome of the elliposoidal radially retractable
First material mouth 308, another top dome relative with the top dome residing for the first material mouth 308 is provided with retractable second material mouth 309.
The material of the inner wall surface of rotary drum body 301 can be selected according to the species of maceration extract, with will not be impregnated
Corrosion is defined.Usually, the inner wall surface of rotary drum body 301 can be stainless steel.
As shown in figure 1, being disposed with spray boom 303 in the rotary drum body 301, it is provided with the spray boom 303 for that will soak
Stain liquid is injected at least one atomizer of surface of material to be impregnated.It is multiple (such as more than three) in the quantity of atomizer
When, multiple atomizers can be to set at equal intervals on spray boom 303, or unequal interval is set.The atomizer
Bore can be selected according to the size of expected atomized drop, usually, the size of the atomizer to spray
The particle diameter of the drop gone out is more preferably micro- in 50-300 preferably in the range of 20-400 microns in the range of 1-600 microns
In the range of rice, further preferably in the range of 60-200 microns, such as in the range of 70-150 microns.Preferably, it is described
The direction of atomizer is adjustable, and the injection direction of maceration extract can be so adjusted according to practical condition.The atomizer
Can be the conventional various nozzles that can be atomized the liquid into, for example, can be drive nozzle, two-phase flow nozzle, ultrasonic nozzle and
Combination more than one or both of electrostatic atomiser.
The quantity of spray boom 303 can be one or more.The spray boom 303 can be various hollow tubular things.In spray boom
When 303 quantity is one, spray boom 303 can be the hollow tube of serpentine-like bending, so that atomizer can be covered by be impregnated
The surface for the layer that material is formed, so as to which maceration extract more uniformly is sprayed on into surface of material to be impregnated.It is in the quantity of spray boom 303
At more, more spray booms 303 can be to be arranged along the mode parallel with the rotor shaft direction of rotary drum body 301, so that atomizer
The surface of the layer formed by material to be impregnated can be covered, so as to equably by maceration extract even application in material table to be impregnated
Face.Can also be cross arrangement between more spray booms 303, as long as the layer that atomizer covering is formed by material to be impregnated can be made
Surface.
Preferably, as shown in figure 1, pivot hermetically passing rotary drum body of the spray boom 303 along rotary drum body 301 can be made
301 side wall enters the inside of rotary drum body 301, wherein, the mist is set on the spray boom 303 inside rotary drum body 301
Change nozzle, so can be while rotary drum body 301 rotate, spray immersion liquid.It is excellent between spray boom 303 and rotary drum body 301
Elect as and be rotatably connected, such spray boom 303 can not rotate with rotary drum body 301.
Preferably, as shown in figure 1, the impregnates rotary drum also includes the rotary shaft 305 being fixedly connected with rotary drum body 301,
Rotary shaft 305 is arranged on the outside of rotary drum body 301 and along the axially extending of rotary drum body 301.Rotary shaft 305 is used for band turn
Drum body 301 is rotated, and rotary drum body 301 can be so rotated during dipping, so that dipping liquid energy is more uniformly distributed
Ground is ejected at surface of material to be impregnated.The quantity of rotary shaft 305 can be selected according to the shape of rotary drum body, typically
Ground, rotary shaft 305 are symmetrically arranged two.
Preferably, as shown in Fig. 2 lifting blade 304 is provided with the internal face of rotary drum body 301, so in rotary drum body
During 301 rotation, material to be impregnated can be kicked up certain height under the carrying of lifting blade 304, so as to realize to be impregnated
Material is more effectively stirred, so that maceration extract is ejected at surface of material to be impregnated with being more uniformly distributed, so that system
Standby catalyst has the composition being more uniformly distributed.Lifting blade 304 can be the various components that can realize above-mentioned function.In one kind
In preferred embodiment, as shown in Fig. 2 lifting blade 304 is at least one convex on the internal face of rotary drum body 301 to be fixed on
Rise.Center of rotation of the projection from the inwall of rotary drum body 301 towards rotary drum body 301 is protruded, with can be in rotary drum body 301
It will again throw down after material lifting to be impregnated to certain altitude while rotation, material to be impregnated stirred so as to realize.Such as
It is described raised for sheet projection according to a kind of preferred embodiment of the present utility model shown in Fig. 2.Invention of the present utility model
People has found in research process, using sheet projection compared with spiral salient that prior art uses, block-shaped protrusion with preferably turning over
Dynamic effect.It is further preferred that the sheet projection towards the edge in the cavity direction of rotary drum body 301 be smooth curve.Institute
State the smooth curve that smooth curve can be rule, or irregular smooth curve (such as can be in wave).From
The angle that effect (stirring efficiency and finished catalyst rate) is stirred in further raising is set out, as shown in Fig. 2 most preferably described sheet
It towards the edge in the cavity direction of rotary drum body 301 is circular arc that projection, which is,.
If sheet projection has corner angle towards the edge in the cavity direction of rotary drum body 301, although to a certain extent can
The efficiency of stirring of material to be impregnated is enough improved, but the intensity of obtained catalyst and ratio of briquetting are relatively low.
According to impregnates rotary drum of the present utility model, preferably axial direction arrangement of the sheet projection along rotary drum body 301.More
Preferably, lifting blade 304 includes the sheet projection that multiple row be arranged in parallel, wherein the spacing between adjacent two row is adjustable, such energy
Enough change the stirring frequency of material to be impregnated, then change dipping effect.
Specifically, the raised spacing of adjacent two column-slice shape is bigger for the frequency of smaller then stirring.As a kind of preferred embodiment,
Spacing between adjacent two column-slice shape projection be z (z be the raised right endpoint of the left sheet left end point raised with right sheet it
Between air line distance), and meet be 0<z<R, preferably 0<z<0.25R, more preferably 0.1R<z<0.25R, wherein R are rotary drum
The radius (for radially maximum inside radius) of body 301, to realize best dipping effect.
Specifically, the raised shape of each sheet can be just as, can also be different, and the utility model is not special to this
Limit.Preferably, each sheet raised shape is just as in order to ensure stirring effect, it is further preferred that radial section
The chord length of bottom arc is x, a height of y of the radial section distance of the string of arc (circular arc summit on earth), wherein meeting：0.5y≤x≤
2.5y, preferably meet：1.8y≤x≤2.3y, so that material to be impregnated can either be elevated, under can also being thrown in time,
And it can prevent material to be impregnated from crushing, so as to be optimal the dipping effect of choosing.
In addition, each raised arranged direction can also have certain angle in addition to parallel to axial direction with axial direction
The arrangement of degree, or it is a plurality of it is raised between angularly interlaced arrangement, all should fall in the utility model for these arrangements
Protection domain in.
According to preferred embodiment of the present utility model, by limiting axial length with the ratio of radial direction maximum length as 3-
5, and lifting blade is limited as sheet is raised, rotary drum body is that elliposoidal causes carrier in the impregnates rotary drum energy in motion process
Enough there are more surface area contacts (reference rotary drum can be passed through by the correct position installation apparatus for making a video recording in device to maceration extract
The relativeness of upper lifting blade and material movement when institute's area coverage is calculated), it is more beneficial for shell profile catalyst
Prepare, and obtained catalyst strength and ratio of briquetting are high.
According to second of the present utility model aspect, the utility model provides a kind of batch (-type) dipping systems, the dipping
System includes maceration extract feed unit, impregnating unit and drying unit, and the maceration extract feed unit is used for the dipping
Unit provides maceration extract, and the impregnating unit is used to make maceration extract contact with material to be impregnated, and the drying unit is for will be through
The material of dipping is dried, and the impregnating unit is included according to impregnates rotary drum of the present utility model.The impregnates rotary drum and its
Structure has been carried out being described in detail above, is no longer described in detail herein.
As shown in figure 1, the maceration extract feed unit includes dipping liquid storage tank 201 and impregnates liquid storage tank for connecting
201 and the pipeline of the spray boom 303 in rotary drum body 301, so as to continuously be sent into maceration extract into rotary drum body 301.According to
It is specific to need, pump 202 can be set on pipeline to improve the efficiency of conveying, while improve the maceration extract being sent into spray boom 303
Pressure, for injection necessary pressure is provided.Valve can also be set on pipeline, to control the connection of pipeline and disconnection, and
Adjust the flow of maceration extract.
Preferably, as shown in figure 1, the dipping systems also include material feed unit to be impregnated, the material to be impregnated
Feed unit is used to provide material to be impregnated to rotary drum body 301.The material feed unit to be impregnated includes material to be impregnated
Storage tank 101, the position of the material outlet to be impregnated of the material storage tank 101 to be impregnated and at least one material mouth of impregnates rotary drum
Position is corresponding, and material to be impregnated is sent into rotary drum body 301 by the material mouth.
As shown in figure 1, the impregnating unit is in addition to including impregnates rotary drum, in addition to for supporting the base of the impregnates rotary drum
Seat 302, rotary drum body 301 is rotatably connected to pedestal 302.When rotary drum body has rotary shaft 305, rotation can be passed through
Rotary drum body 301 is rotatably connected to pedestal 302 by axle 305.
Preferably, as shown in figure 1, the impregnating unit also includes being used for the drive device for driving rotary drum body 301 to rotate.
, can be by the way that the power of drive device be passed into rotary shaft 305, so as to turn when impregnates rotary drum has rotary shaft 305
Drum body 301 rotates.Specifically, the drive device includes power generating part part 306 and transmission parts 307, the driving section
Part 307 is used for the power transmission that power generating part part 306 exports to rotary drum body 301 or rotary shaft 305.Power produces
Part 306 can be the various parts that can be produced and export power, such as motor.Transmission parts 307 can be that various power pass
Part is passed, such as one or more combinations in travelling gear, worm and gear, transmission belt and spiral.Preferably, transmission parts
307 be travelling gear.
The drying unit is used to the material through dipping for coming from impregnating unit being dried.As shown in Fig. 1, institute
Dry zone 401 and distributing device 402 can be included by stating drying unit.
Distributing device 402 is used to receive the material through dipping from impregnates rotary drum output, and the material through dipping is shifted
To the load-bearing surface of dry zone 401.Distributing device 402 can be the various parts that can realize above-mentioned function.In preferable embodiment party
In formula, as shown in figure 1, distributing device 402 is including cylinder and at least one retractable entrance being arranged on the cylinder and extremely
A few retractable outlet.The position of the entrance of distributing device 402 is relative with the position of at least one material mouth of the impregnates rotary drum
Should, to receive the material through dipping for coming from impregnates rotary drum, the position of the outlet of distributing device 402 is enough the material through dipping
It is transferred to dry zone 401.
Dry zone 401 is used for the dry materials through dipping.The material of dry zone 401 is can bear to dry required temperature
Degree is defined.Usually, the material of dry zone 401 is enough to bear 50-300 DEG C of temperature, can preferably bear 100-250 DEG C of temperature
Degree.
As needed, dry zone 401 can be arranged in a housing 403, the pipe vacuumized is provided with housing 403
Line, it can so be dried at reduced pressure.
According to specific needs, the dipping systems can also include calciner, with to being calcined through dry material.
The calciner can be the conventional device that can realize roasting function, be not particularly limited, such as roaster.
According to dipping systems of the present utility model, can be operated using following technique.
Material to be impregnated is fitted into material storage tank 101 to be impregnated, maceration extract is placed in dipping liquid storage tank 201.Make to turn
Drum body 301 on the first material mouth 308 or the second material mouth 309 towards material storage tank 101 to be impregnated material outlet to be impregnated, with
Material to be impregnated is sent into material storage tank 101 to be impregnated.The generating means that turns on the power 306 with pass through rotary shaft 305 driving turn
Drum body 301 rotates.
The valve on the pipeline of connection dipping liquid storage tank 201 and spray boom 303 is opened, by dipping liquid storage tank 201 and spray boom
303 connections, so as to which maceration extract to be injected in the surface of material to be impregnated by the atomizer on spray boom 303, and then are waited to soak
Stain material is adsorbed.Wherein, the cumulative volume of maceration extract is less than the total pore volume of material to be impregnated.Contain the molten of catalytic active component
Total quantity for spray of liquid is VL, the total pore volume of the material to be impregnated is VC, VL/VC=0.01-0.99；Preferably, VL/VC=
0.1-0.8；It is highly preferred that VL/VC=0.2-0.7；It is further preferred that VL/VC=0.3-0.6, such as VL/VC=0.4-0.5.
Wherein, VCQuality equal to material to be impregnated (in gram) is multiplied by the water absorption rate of material to be impregnated (density of water is 1g/cm3), inhale
Water rate is the water absorption of the carrier of unit weight.Specifically, following methods measure water absorption rate can be used：Can be by carrier (weight
Amount is calculated as w1, in gram) and water is used using the ratio of carrier (by weight) and water (by volume) as 1：3 dippings 2 hours, filtering
Afterwards, solid is drained, then weighing the weight of the solid drained, (weight is calculated as w2, in gram), calculated and absorbed water by below equation
Rate：
, can be by the temperature control in rotary drum body 301 in the range of 0-70 DEG C, preferably by rotary drum in course of injection
Temperature control in body 301 is in the range of 20-50 DEG C.The duration of the injection can be -200 minutes 5 minutes.Institute
The duration for stating injection is preferably more than 10 minutes, more preferably more than 15 minutes.Preferably, the duration of the injection
Preferably less than 100 minutes, more preferably less than 60 minutes, it is even more preferably 30 minutes below.
After the completion of dipping, rotary drum body 301 is stopped operating, make the first material mouth 308 or the second in rotary drum body 301
Material through dipping is transferred on dry zone 401, is dried towards the entrance of distributing device 402 by material mouth 309.
After the completion of drying, it will optionally be sent into calciner and be calcined through dry material.
Material to be impregnated described in the utility model can be the thing that various needs commonly used in the art are impregnated
Material, such as can be porous carrier.
Using according to dipping systems of the present utility model by catalytic active component load on porous support and prepare urge
In agent, along the radial section of porous carrier, catalytic active component is higher than it in the dense of porous carrier core in the concentration of outer layer
Degree, be shell profile catalyst, as diffusion controlling react, as Fischer-Tropsch synthesis catalyst when, show more
High catalytic activity.
" shell distribution catalyst " is generally also referred to as eggshell type catalyst with non-uniform distribution by those skilled in the art, referred to as
Egg-shell catalyst, its definition are known to the skilled person, such as may refer to that (Zhu Hongfa writes《Catalyst carrier
Preparation and application technology》The definition in the 199-200 pages (petroleum industry publishing house May the 1st edition in 2002) in book.This practicality
In new, shell rate passes through SEM-energy spectrum analysis (i.e. SEM-EDX, Scanning Electron
Microscope-Energy Dispersive Spectrometry) method measures.Specific method includes：Randomly select 30
Catalyst granules simultaneously radially cuts catalyst granules, the section particle diameter of catalyst granules is observed with SEM, afterwards with EDX edges
Radial section scans to obtain the radial distribution of catalytic active component.Tied because ESEM-X-ray energy spectrum (SEM-EDX) characterizes
It is mutually corresponding with the constituent content along the counting rate of carrier radial direction every bit in fruit, although the size of counting rate may not generation
The real content of the table element, but counting rate be sized to reflect the constituent content height.Therefore, in order to represent to be catalyzed
It is catalytic active component and catalyst aid that the regularity of distribution of active component and catalyst aid along carrier radial direction, which introduces distribution factor σ, σ,
The ratio between concentration at the heart and the concentration of a certain opening position in addition to center in the catalyst.In general, described, " eggshell type is catalyzed
Agent " refers to：The distribution factor σ of catalyst is 0≤σ ＜ 0.95 a kind of catalyst, wherein, concentration is except center on a certain position
The average value of (position deviation≤20nm) 20 numerical point counting rates near certain point outside point；Put at center centered on concentration attached
The closely average value of (position deviation≤20nm) 20 numerical point counting rates.What shell distribution catalyst described in the utility model referred to
It is that active metal component in catalyst is mainly distributed on shell.To be shell profile in 30 catalyst granules of test
Percentage shared by the particle of catalyst is referred to as shell rate.Wherein, shell thickness refers to that the distribution factor of catalytic active component is expired
The thickness of 0≤σ of foot ＜ 0.95 part.
Describe the utility model in detail with reference to embodiments, but and be not so limited the utility model.
In following examples and comparative example, the composition of the catalyst prepared is determined using x-ray fluorescence spectrometry method.
In following examples and comparative example, pass through SEM-energy spectrum analysis (that is, SEM-EDX, Scanning
Electron Microscope-Energy Dispersive Spectrometry) method determines catalytic active component along porous
The distribution of carrier radial direction, and calculate shell rate.
In following examples and comparative example, the size of atomized drop is determined using Malvern Particle Size Analyzer, is put down for volume
Equal particle diameter.
In following examples, rotary drum body 301 is elliposoidal.
Embodiment 1
1st, as shown in figure 1,200kg is extruded by 1.6mm orifice plates butterfly gama-alumina particle (particle length be 2-8 milli
Rice, its water absorption rate is determined as 0.8 ml/g) it is used as catalyst carrier and is put into material storage tank 101 to be impregnated.
2nd, cobalt nitrate is dissolved in the water, is configured to maceration extract (in terms of CoO, the concentration of cobalt nitrate is 330 g/l) simultaneously
It is placed in dipping liquid storage tank 201.
3rd, porous carrier is sent into rotary drum body 301, rotating rotary drum body 301, (axial direction of rotary drum body 301 is a length of
3.5 meters, maximum radial internal diameter (diameter) is 1 meter, and smallest radial internal diameter (diameter) is 0.3 meter.The inwall of rotary drum body 301 is set
It is equipped with lifting blade 304, the axial cross section of lifting blade 304 is circular arc, x=2.2y, z 0.2R, and the level of rotary drum body 301 is set
Put, wherein, x is the chord length of the bottom arc of the radial section of lifting blade, and y is the height of the radial section of lifting blade, and z is adjacent two column-slice
Spacing between shape projection, R are the radial direction maximum inside radius of rotary drum body), velocity of rotation is 3.5 revs/min, to rotary drum sheet
Maceration extract is sent into body 301, maceration extract is sprayed on porous carrier surface by atomizer in the form of atomized drop.Its
In, the straying quatity V of maceration extractLWith the total pore volume V of porous carrierCRatio meet VL/VC=0.5, the size of atomized drop is
80μm；Temperature in rotary drum body 301 is 25 DEG C, and residence time of the porous carrier in rotary drum body 301 is 30 minutes.
4th, after the completion of impregnating, in 5 minutes, sample after dipping is all sent on dry zone 401 and is dried, wherein,
Drying is carried out at ambient pressure, and temperature is 160 DEG C, and residence time of the sample on dry zone 401 is 4 hours after dipping.
5th, by dried sample at a temperature of 380 DEG C, it is calcined 4 hours, so as to obtain catalyst.The group of the catalyst
Into and shell rate listed in table 1, along the radial section of porous carrier by outer layer to core, the percentage contents of cobalt element
Listed in table 2.Size distribution is listed in table 3.
Comparative example 1
Catalyst is prepared according to method same as Example 1, unlike, the axial direction a length of 3.5 of rotary drum body 301
Rice, maximum radial internal diameter (diameter) are 2 meters, and smallest radial internal diameter (diameter) is 0.6 meter.
The composition and shell rate of the catalyst of preparation are listed in table 1, along the radial section of porous carrier by outer layer extremely
Core, the percentage contents of cobalt element are listed in table 2.Size distribution is listed in table 3.
Comparative example 2
Catalyst is prepared according to method same as Example 1, unlike, the axial direction a length of 1.3 of rotary drum body 301
Rice, maximum radial internal diameter (diameter) are 2.8 meters, and smallest radial internal diameter (diameter) is 0.6 meter.
The composition and shell rate of the catalyst of preparation are listed in table 1, along the radial section of porous carrier by outer layer extremely
Core, the percentage contents of cobalt element are listed in table 2.Size distribution is listed in table 3.
Comparative example 3
According in CN204911534U, method disclosed in embodiment 1 prepares catalyst, unlike, in its step 3,
During spraying, vavuum pump is not turned on, i.e., during spraying, without vacuumizing.
The composition and shell rate of the catalyst of preparation are listed in table 1, along the radial section of porous carrier by outer layer extremely
Core, the percentage contents of cobalt element are listed in table 2.Size distribution is listed in table 3.
Comparative example 4
According in CN204503105U, method disclosed in embodiment 1 prepares catalyst, unlike, in its step 3,
During spraying, vavuum pump is not turned on, i.e., during spraying, without vacuumizing.
The composition and shell rate of the catalyst of preparation are listed in table 1, along the radial section of porous carrier by outer layer extremely
Core, the percentage contents of cobalt element are listed in table 2.Size distribution is listed in table 3.
Embodiment 2
1st, (particle length is 2-8 millimeters to the butterfly gama-alumina particle extruded 300kg by 1.6mm orifice plates, determines it
Water absorption rate is 1.0 mls/g) it is used as catalyst carrier and is put into material storage tank 101 to be impregnated.
2nd, ammonium metatungstate and nickel nitrate are dissolved in the water, are configured to maceration extract (WO3Concentration be 402 g/l, NiO
Concentration be 25 g/l) and be placed on dipping liquid storage tank 201 in.
3rd, porous carrier is sent into rotary drum body 301, rotates (the axial direction a length of 4 of rotary drum body 301 of rotary drum body 301
Rice, maximum radial internal diameter (diameter) are 1 meter, and smallest radial internal diameter (diameter) is 0.3, and the inwall of rotary drum body 301, which is provided with, to be raised
Flitch 304, the axial cross section of lifting blade 304 is circular arc, and x=2y, z 0.2R, rotary drum body 301 is horizontally disposed, wherein, x
For the chord length of the bottom arc of the radial section of lifting blade, y is the height of the radial section of lifting blade, and z is adjacent two column-slice shape projection
Between spacing, R be rotary drum body radial direction maximum inside radius), velocity of rotation be 3.5 revs/min, sent into rotary drum body 301
Enter maceration extract, maceration extract is sprayed on porous carrier surface by atomizer in the form of atomized drop.Wherein, maceration extract
Straying quatity VLWith the total pore volume V of porous carrierCRatio meet VL/VC=0.4, the size of atomized drop is 100 μm；Rotary drum
Temperature in body 301 is 50 DEG C, and residence time of the porous carrier in rotary drum body 301 is 24 minutes.
4th, after the completion of impregnating, in 6 minutes, sample after dipping is all sent on dry zone 401 and is dried, wherein,
Drying is carried out at ambient pressure, and temperature is 120 DEG C, and the drying is carried out under reduced pressure, and pressure (gauge pressure) is -8kPa, sample after dipping
Residence time of the product on dry zone 401 is 2 hours.
5th, by dried sample at a temperature of 400 DEG C, it is calcined 2 hours, so as to obtain catalyst.The group of the catalyst
Into and shell rate listed in table 1, along the radial section of porous carrier by outer layer to core, the percentage contents of wolfram element
Listed in table 2.Size distribution is listed in table 3.
Embodiment 3
1st, (particle length is 2-8 millimeters to the butterfly gama-alumina particle extruded 500kg by 1.6mm orifice plates, determines it
Water absorption rate is 1.0 mls/g) it is used as catalyst carrier and is put into material storage tank 101 to be impregnated.
2nd, ammonium molybdate, ammonium metatungstate, nickel nitrate and phosphoric acid are dissolved in the water, are configured to maceration extract (MoO3Concentration be
225 g/l, WO3Concentration be 100 g/l, NiO concentration is 50 g/l, P2O5Concentration be 50 g/l) and put
In impregnating in liquid storage tank 201.
3rd, porous carrier is sent into rotary drum body 301, rotates (the axial direction a length of 5 of rotary drum body 301 of rotary drum body 301
Rice, maximum radial internal diameter (diameter) are 1 meter, and smallest radial internal diameter (diameter) is 0.3 meter, and the inwall of rotary drum body 301 is provided with
Lifting blade 304, the axial cross section of lifting blade 304 is circular arc, and x=2y, z 0.2R, rotary drum body 301 is horizontally disposed, wherein,
X is the chord length of the bottom arc of the radial section of lifting blade, and y is the height of the radial section of lifting blade, and z is adjacent two column-slice shape projection
Between spacing, R be rotary drum body radial direction maximum inside radius), velocity of rotation be 3.5 revs/min, sent into rotary drum body 301
Enter maceration extract, maceration extract is sprayed on porous carrier surface by atomizer in the form of atomized drop.Wherein, maceration extract
Straying quatity VLWith the total pore volume V of porous carrierCRatio meet VL/VC=0.31, the size of atomized drop is 100 μm；Rotary drum
Temperature in body 301 is 50 DEG C, and residence time of the porous carrier in rotary drum body 301 is 24 minutes.
4th, after the completion of impregnating, in 6 minutes, sample after dipping is all sent on dry zone 401 and is dried, wherein,
Drying is carried out at ambient pressure, and temperature is 120 DEG C, and the drying is carried out under reduced pressure, and pressure (gauge pressure) is -8kPa, sample after dipping
Residence time of the product on dry zone 401 is 2 hours.
5th, by dried sample at a temperature of 400 DEG C, it is calcined 2 hours, so as to obtain catalyst.The group of the catalyst
Into and shell rate listed in table 1, along the radial section of porous carrier by outer layer to core, the percentage contents of molybdenum element
Listed in table 2.Size distribution is listed in table 3.
Embodiment 4
Catalyst is prepared according to method same as Example 1, unlike, a length of 6 meters of the axial direction of rotary drum body 301.
The composition and shell rate of obtained catalyst are listed in table 1, along the radial section of porous carrier by outer layer to core, cobalt member
The percentage contents of element are listed in table 2.Size distribution is listed in table 3.
Table 1
Table 2
The relative concentration of element：Along the radial section of catalyst, with EDX, radially section is scanned from outermost layer to core,
Take 5 points to measure the concentration of catalytic active component at each point respectively at equal intervals, obtain the concentration and the point of each catalytic active component
Locate the ratio of aluminium element concentration.
Table 3
Note：2-3mm does not include 3nm in table.
It can be seen that from the result of Tables 1 and 2 and urged by prepared by the dipping systems using impregnates rotary drum of the present utility model
Agent has higher shell rate, so as to repeat stably to prepare shell profile catalyst.
From the results shown in Table 3, the catalyst prepared by the dipping systems using impregnates rotary drum of the present utility model
Intensity and yield rate are higher, and crushed particles are less, and the catalyst prepared compared with the dipping systems that prior art provides, particle diameter is less than
2mm particle is less, and the less particle of the more particle diameter of generation prepared by the dipping systems that prior art provides, catalyst strength
Poor, yield rate is relatively low.
The dipping systems using impregnates rotary drum of the present utility model are can be seen that from the comparative result of embodiment and comparative example
The catalyst shell rate of preparation is higher, and catalyst strength and yield rate are higher.Further, comparative example 1 and comparative example
1st, comparative example 2 and embodiment 4 are it can be found that using the preferable axial length of the utility model and turn of radial direction maximum length ratio
Drum body is more beneficial for optimizing catalyst property；Comparative example 1 is with comparative example 3 and comparative example 5 it can be found that the utility model
Preferable rotary drum body form fit rotary drum body is horizontally disposed with, and is more beneficial for optimizing catalyst property；Comparative example 1 with
Comparative example 4 is it can be found that impregnates rotary drum provided by the utility model avoids radial direction material to be impregnated from being entered by excessive centrifugal force
And avoid the reduction of catalyst strength and yield rate.With greater need for explanation, the utility model rotary drum body is horizontally disposed with, more
Be advantageous to monitor product quality, when a batch materials go wrong, can remedy in time, and need not use Lift Part will
Rotary drum body is obliquely installed, therefore simpler easily-controllable.
Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing
Detail in above-mentioned embodiment, can be to skill of the present utility model in range of the technology design of the present utility model
Art scheme carries out a variety of simple variants, and these simple variants belong to the scope of protection of the utility model.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is to each
The possible combination of kind no longer separately illustrates.
In addition, it can also be combined between a variety of embodiments of the present utility model, as long as it is not disobeyed
Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.
Claims (13)
1. a kind of batch (-type) impregnates rotary drum, the impregnates rotary drum includes being used for the hollow rotary drum body (301) for carrying material to be impregnated,
At least one retractable material mouth for receiving and/or exporting material to be impregnated is provided with the rotary drum body (301), it is described
Spray boom (303) is disposed with rotary drum body (301), is provided with the spray boom (303) to be impregnated for maceration extract to be injected in
At least one atomizer of surface of material, it is characterised in that the impregnates rotary drum is horizontally disposed with, the rotary drum body (301)
Axial length and the ratio of radial direction maximum length are 3-9.
2. impregnates rotary drum according to claim 1, it is characterised in that the axial length of the rotary drum body (301) and footpath
It is 3-5 to the ratio of maximum length.
3. impregnates rotary drum according to claim 1, it is characterised in that the spray boom (303) is along the rotary drum body (301)
It is axially extending；
The impregnates rotary drum also includes the rotary shaft (305) being fixedly connected with the rotary drum body (301), the rotary shaft
(305) it is arranged on the outside of the rotary drum body (301) and along the axially extending of the rotary drum body (301).
4. impregnates rotary drum according to claim 1, it is characterised in that set on the internal face of the rotary drum body (301)
There is lifting blade (304).
5. impregnates rotary drum according to claim 4, it is characterised in that the lifting blade is that sheet is raised, and the sheet is convex
It is smooth curve to rise towards the edge in rotary drum body (301) cavity direction.
6. according to the impregnates rotary drum described in any one in claim 1-5, it is characterised in that the rotary drum body (301) is
Elliposoidal.
7. impregnates rotary drum according to claim 6, it is characterised in that the double top domes of the elliposoidal radially are respectively set
It is equipped with a material mouth.
8. a kind of batch (-type) dipping systems, the dipping systems include maceration extract feed unit, impregnating unit and drying unit, institute
State maceration extract feed unit be used for the impregnating unit provide maceration extract, the impregnating unit be used for make maceration extract with it is to be impregnated
Material contacts, and the drying unit is used to the material through dipping being dried, it is characterised in that the impregnating unit includes power
Profit requires the impregnates rotary drum described in any one in 1-7.
9. dipping systems according to claim 8, it is characterised in that the impregnating unit also includes being used to support the leaching
The pedestal (302) of stain rotary drum, rotary drum body (301) are rotatably connected to the pedestal (302).
10. dipping systems according to claim 8, it is characterised in that the impregnating unit also includes being used to drive rotary drum
The drive device that body (301) rotates.
11. dipping systems according to claim 8, it is characterised in that the maceration extract feed unit stores up including maceration extract
Tank (201) and the pipeline for connecting the spray boom (303) in the dipping liquid storage tank (201) and rotary drum body (301).
12. according to the dipping systems described in any one in claim 8-11, it is characterised in that the dipping systems also include treating
Material feed unit is impregnated, the material feed unit to be impregnated is used to provide material to be impregnated to rotary drum body (301).
13. dipping systems according to claim 8, it is characterised in that the drying unit includes dry zone (401) and cloth
Glassware (402), the distributing device (402) is including cylinder and at least one retractable entrance being arranged on the cylinder and extremely
A few retractable outlet, the position of the entrance of the distributing device (402) and the position of at least one material mouth of the impregnates rotary drum
Put corresponding, come from the material through dipping of the impregnates rotary drum to receive, the position foot of the outlet of the distributing device (402)
So that the material through dipping is transferred into the dry zone (401).
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| CN112919465A (en) * | 2021-01-25 | 2021-06-08 | 成都达奇能自科技有限公司 | Impregnation system and activated carbon impregnation method |
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