CN109718722A - Trickle bed reactor - Google Patents
Trickle bed reactor Download PDFInfo
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- CN109718722A CN109718722A CN201711025292.4A CN201711025292A CN109718722A CN 109718722 A CN109718722 A CN 109718722A CN 201711025292 A CN201711025292 A CN 201711025292A CN 109718722 A CN109718722 A CN 109718722A
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Abstract
The present invention relates to the fields of the reactor with solid particle bed, disclose a kind of trickle bed reactor, the trickle bed reactor includes with the feed inlet (100) entered for raw material, discharge port (101) for product discharge and for catalyst discharge discharge port (102) shell of reactor (10) and be installed in the shell of reactor (10) and along multiple beds (11) for loading catalyst of the short transverse of the shell of reactor (10) arrangement, it is connected between the adjacent bed (11) by discharge duct (12), folding unit (13) for being opened and closed the discharge duct (12) is installed on the discharge duct (12).The trickle bed reactor can reduce the back-mixing rate of the catalyst in each bed, reduce the air-teturning mixed phenomenon of catalyst.
Description
Technical field
The present invention relates to the reactors with solid particle bed, more particularly to a kind of trickle bed reactor.
Background technique
Reactor is a kind of equipment for realizing reaction process, is widely used in the fields such as chemical industry, oil refining, metallurgy.Reactor
For realizing the heterogeneous reaction process such as single liquid phase reaction process and the solid, gas-liquid-solid of liquid liquid, gas-liquid, liquid.The packet of common reactor
Include tubular reactor, tank reactor, bubbling reactor (alternatively referred to as bubbling stirred tank), stirring autoclave slurry reactor, tower
Formula reactor and injection reactor.In addition, further include the reactor (also known as packed bed reactor) with solid particle bed,
It is filled with solid catalyst or solid reactant, when gas and/or liquid pass through fixed or movement solid particle bed
To realize heterogeneous reaction process, including fixed bed reactors, fluidized-bed reactor, moving-burden bed reactor etc..Fixed bed reactors
It is mainly used for realizing gas-solid catalysis, such as ammonia convertor, sulfur dioxide contact oxidation device, hydrocarbon steam converting furnace,
Difference with fluidized-bed reactor and moving-burden bed reactor is that solid particle remains static.Trickle bed reactor also known as drips
Fluidized bed reactor is gas and liquid cocurrent by particulate solid catalyst bed, to carry out gas-liquid solid phase reaction process
A kind of reactor.Catalyst exists as a fixed bed in trickle bed reactor, therefore this reactor also can be considered fixed bed
One kind of reactor.
In order to adapt to the demand of reaction, multiple catalyst beds can be set in the reactor, in different catalyst beds
Load different types of catalyst.For example, first can be set gradually from top to bottom in the trickle bed reactor for being used to be hydrocracked
Bed, the second bed, third bed and the 4th bed, wherein load Hydrobon catalyst in the first bed, second and third bed
Hydrocracking catalyst is loaded in layer, loads hydrocracking catalyst and rear catalyst for refining in the 4th bed.One reaction
After period, needs successively to unload the catalyst being loaded in different catalysts bed and carry out catalyst regeneration.However it unloads and urges
Catalyst when agent in different beds will appear the phenomenon that different degrees of mixing each other, referred to as back-mixing.It urges
The filling of catalyst after largely effecting on catalyst regeneration and regeneration is influenced the reality of catalyst by the air-teturning mixed phenomenon of agent
Application effect.
Currently, mainly avoiding the air-teturning mixed phenomenon of catalyst using following manner, first way is the method by sieving
The catalyst of variable grain size is separated, it is more and more however as the type for the catalyst being applied in reactor, it is this logical
The method for crossing screening separating catalyst is more and more impracticable；The second way is to be respectively provided at each bed and corresponding bed
The discharge port being connected, then by corresponding discharge port reactor is discharged in catalyst by each bed, in such mode, by
In being provided with multiple discharge ports, it therefore will increase the leak source of reactor, reduce the leakproofness of reactor, be particularly unsuitable for height
Pressure reaction, in addition, making reactor using the above-mentioned second way, structure is complicated, and transformation difficulty is larger.In addition, can also use
Catalyst is unloaded since top, that is, loading catalyst reverse process of reactor to reduce air-teturning mixed phenomenon.Inversely unloading catalyst
During, the broken comparison of catalyst is severe, and whole process will cause more catalyst loss；And time-consuming, manually
Large labor intensity, work situation is severe, since time-consuming and large labor intensity, substantially increases production cost.
Summary of the invention
The purpose of the invention is to overcome in each bed of the existing technology positioned in trickle bed reactor
Catalyst more serious problem of the air-teturning mixed phenomenon of catalyst during unloading, provides a kind of trickle bed reactor, the drop
Fluidized bed reactor can reduce the back-mixing rate of the catalyst in each bed, reduce the air-teturning mixed phenomenon of catalyst.
To achieve the goals above, one aspect of the present invention provides a kind of trickle bed reactor, the trickle bed reactor packet
It includes with the feed inlet entered for raw material, for the discharge port of product discharge and the shell of reactor of the discharge port for catalyst discharge
And it is installed in the shell of reactor and along the multiple for loading catalysis of the short transverse of shell of reactor arrangement
The bed of agent is connected between the adjacent bed by discharge duct, is equipped on the discharge duct for being opened and closed the discharging
The folding unit of pipe.
Preferably, the folding unit includes covering the cover board of the bottom end opening of the discharge duct and described for controlling
The driving mechanism of cover board opening and closing.
Preferably, the driving mechanism includes: fixation kit, and the fixation kit includes be set to the discharge duct outer
The fixation bracket of wall and the support frame detachably connectable with the fixed bracket, connecting rope, the both ends of the connecting rope respectively with
The outer wall of the discharge duct is connected with support frame as described above, and the cover board is connected to the connecting rope and pulling rope, described to lead
One end of drawstring is connected to support frame as described above, and the other end of the pulling rope extends to the discharge port, the pulling rope by
It separates support frame as described above mutually with the fixed bracket and the cover board is driven to remove the bottom of the discharge duct
End opening.
Preferably, it is connected between the fixed bracket and support frame as described above by buckle structure, wherein the buckle structure
Including being set to the support bracket fastened buckle and be set to support frame as described above buckles the bayonet matched with described, or
The buckle structure includes being set to the buckle of support frame as described above and being set to the described support bracket fastened and buckle to match
The bayonet of conjunction.
Preferably, the outer wall of the discharge duct is provided with connection component, and the end of the connecting rope passes through the connection group
Part is connected with the outer wall of the discharge duct.
Preferably, the connection component includes being installed on the cylinder of the outer wall of the discharge duct and being rotationally arranged at
The inside of the cylinder and the shaft being connected with the end of the connecting rope, the central axis upright of the shaft is in described anti-
The short transverse of device shell is answered, the rotation of the shaft is able to drive the connecting rope winding or stretches out the shaft.
Preferably, connection ring is installed, the end of the pulling rope is connected to the connection ring on support frame as described above.
Preferably, at least one hole is offered on the cover board, the aperture in the hole is less than the partial size of the catalyst.
Preferably, multiple through-holes, the week of tube wall of multiple through-holes along the discharge duct are offered on the discharge duct
It is uniformly distributed to direction, opens up the gross area of throughhole portions as the 10-90% of the gross area of the tube wall of the discharge duct.
Preferably, each bed includes that the first packing layer set gradually from top to bottom, catalyst layer and second are filled out
The bed of material, the discharge duct extend along the short transverse of the shell of reactor, and the top end opening of the discharge duct protrudes into adjacent
First packing layer of the bed on the upper layer in the bed, the bottom end opening of the discharge duct protrude into the described of lower layer
Second packing layer or the catalyst layer in bed.
Preferably, the discharge duct is multiple, and the opposite port between the adjacent discharge duct aligns, and is connected to
Each pulling rope of the corresponding cover board is marked respectively.
Preferably, distributor and/or discharge outlet peace so that raw material diffusion are installed at the feed inlet
Equipped with product collector.
Preferably, it is arranged between the catalyst layer and second packing layer of the bed of the feed inlet
There is scale trap, and/or, the inside of the shell of reactor is equipped with so that the distribution plate that material is evenly distributed, institute
The top that distribution plate is located at the corresponding bed is stated, is provided with cold hydrogen box, the cold hydrogen box position between the adjacent bed
In the top of the distribution plate.
In the above-mentioned technical solutions, corresponding so as to control by installing the folding unit on the discharge duct
The bed in the unloading time of catalyst thus make in this way, the catalyst in multiple beds can be unloaded successively
It obtains the interference in uninstall process of the catalyst in multiple beds to reduce, and greatly reduces each bed
In catalyst back-mixing rate, such as the back-mixing rate of the catalyst in each bed can be reduced to 7%, thus subtract significantly
Lack the air-teturning mixed phenomenon of catalyst, so that the catalyst unloaded is convenient for regeneration, while making the interval between each reaction time
It shortens.In addition, the setting folding unit can also control the flow of the catalyst by the corresponding discharge duct.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the trickle bed reactor of the preferred embodiment for the present invention；
Fig. 2 is the preferred structure signal of the opening/closing unit for being set to discharge duct in trickle bed reactor shown in Fig. 1
Figure.
Description of symbols
10- shell of reactor；100- feed inlet；101- discharge port；102- discharge port；11- bed；110- supporting beam；12-
Discharge duct；13- opens and closes unit；130- cover board；131- fixes bracket；132- support frame；133- connecting rope；134- pulling rope；
136- cylinder；137- shaft；138- connection ring；14- distributor；15- distribution plate；16- scale trap；17- cold hydrogen box；18-
Product collector.
Specific embodiment
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " typically refers to
Understand in conjunction with the orientation in orientation shown in the drawings and practical application.
The present invention provides a kind of trickle bed reactor, the trickle bed reactor includes with the charging entered for raw material
Mouthfuls 100, the discharge port 101 for product discharge and for catalyst discharge discharge port 102 shell of reactor 10 and be installed on
It is adjacent in shell of reactor 10 and along multiple beds 11 for loading catalyst of the short transverse of shell of reactor 10 arrangement
Bed 11 between be connected to by discharge duct 12, the folding unit 13 for being opened and closed discharge duct 12 is installed on discharge duct 12.It is logical
The installation folding unit 13 on discharge duct 12 is crossed, so as to control the unloading time of the catalyst in corresponding bed 11, this
Sample, the catalyst in multiple beds 11 can successively be unloaded according to sequence from top to bottom, be thereby reduced in multiple beds 11
Interference of the catalyst in uninstall process, and greatly reduce the back-mixing of the catalyst in each bed 11
The back-mixing rate of catalyst in rate, such as each bed 11 can be reduced to 7%, and the back-mixing for thus substantially reducing catalyst is existing
As so that the catalyst unloaded is convenient for regeneration, while accelerating the linking between each reaction time.In addition, setting folding is single
Member 13 can also control the flow of the catalyst by corresponding discharge duct 12.After the completion of a reaction time, can gradually it subtract
The intake of few raw material can also be passed through atent solvent into the trickle bed reactor or replace oily (gasoline and/or light fraction
Oil) to reduce the temperature and pressure of entire reaction system, it in addition can also be passed through inert gas and entire reaction system is made to be in lazy
Property gas atmosphere in, later, open discharge port 102, unload the catalyst in the bed 11 of the bottom, to most bottom
After catalyst completion of discharge in the bed 11 of layer, the bed 11 for being installed on the connection bottom and the bed 11 with the bottom are opened
The folding unit 13 of the discharge duct 12 of adjacent bed 11, so that urging in the bed 11 adjacent with the bed 11 of the bottom
Agent unloads, and so on, after the catalyst in the bed 11 of lower layer unloads, corresponding folding unit 13 is opened, so that phase
Catalyst in the bed 11 on adjacent upper layer unloads.It should be pointed out that it is preferred that filling solid is granular in bed 11 urges
Agent can also load respectively different catalyst in different beds 11 to improve the performance of reaction product.In addition, into
Material mouth 100 can be opened in the roof of shell of reactor 10, and discharge port 101 can be opened in the bottom wall of shell of reactor 10, discharge port
102 can be opened in the bottom wall of shell of reactor 10, and the preferably position where discharge port 102 is higher than the position where discharge port 101.
Wherein, the setting position for opening and closing unit 13 is not particularly limited, if can control catalyst by discharge duct 12 or
It is intercepted, it is preferable that folding unit 13 may be disposed at the bottom end opening of discharge duct 12.As for 12 material of discharge duct not by
It to specific limitation, such as can be stainless steel, or ceramics can also be the materials such as titanium, zirconium.The position of discharge duct 12
Can be at the middle part of the inner cavity of shell of reactor 10, it can also be close to the wall of shell of reactor 10, naturally it is also possible in other positions
It sets, as long as catalyst is enabled to pass into next bed 11.In addition, discharge duct 12 can be the straight of uniform diameter
Pipe can also not make specifically the shape of discharge duct 12 at this in top caliber is larger and the lesser state of lower part caliber
Restriction.Discharge duct 12 can be integrally formed, is also possible to multistage pipe and passes through screw thread or flanged joint shape each other
At can pass through bell and spigot frame, groove structure or ferrule structure each other with multistage pipe and connect to be formed.Discharge duct 12 can be with
For straight tube, it is also possible to curved pipe, as long as catalyst is enabled to pass into next bed 11.
The structure type of folding unit 13 is not exposed to specific limitation, as long as can play the role of being opened and closed discharge duct 12
?.Preferably, folding unit 13 may include covering the cover board 130 of the bottom end opening of discharge duct 12 and for controlling cover board
The driving mechanism of 130 opening and closings, under the driving effect of the driving mechanism, cover board 130 can be covered in the bottom end of discharge duct 12
It is open or removes the bottom end opening of discharge duct 12, wherein the driving method can be selected according to actual needs, such as can be selected
The mode being driven by electricity.
In conjunction with shown in Fig. 1 and Fig. 2, the driving mechanism may include fixation kit, connecting rope 133 and pulling rope 134,
In, the fixation kit includes being set to the fixation bracket 131 of the outer wall of discharge duct 12 and detachably connectable with fixed bracket 131
Support frame 132, the both ends of connecting rope 133 are connected with the outer wall of discharge duct 12 and support frame 132 respectively, and cover board 130 connects
In connecting rope 133, one end of pulling rope 134 is connected to support frame 132, and the other end of pulling rope 134 extends to discharge port 102,
The end of pulling rope 134 can be connected to support frame 132 so that pulling rope by the connection ring 138 being installed on support frame 132
134 are bonded with support frame 132, even by traction force, also can securely connect with support frame 132.When the drip
Bed reactor also in the raw material in reaction time, that is, trickle bed reactor also in the stage of reaction when, in connecting rope 133
Supporting role under be connected to the cover board of connecting rope 133 and be covered in the bottom end opening of discharge duct 12；When needing to unload corresponding bed
When catalyst in layer 11, traction force is applied to pulling rope 134 at discharge port 102, pulling rope 134 makes after by traction force
It obtains support frame 132 and separates the bottom end opening for driving cover board 130 to remove discharge duct 12 simultaneously with fixed 131 phase of bracket；When needs exist
When recharging catalyst in the trickle bed reactor to enter next reaction time, after bed 11 completes filling, then
It is secondary so that support frame 132 is connected with fixed bracket 131, and cover board 130 is made to be covered in the bottom end opening of discharge duct 12.
Above-mentioned form is set by the driving mechanism, it, can be by cover board by pulling the pulling rope 134 extended at discharge port 102
130 remove the bottom end opening of discharge duct 12 or are connected again with fixed bracket 131 so that discharge duct 12 by support frame 132
State in closure, therefore the process for opening discharge duct 12 is relatively simple, facilitates operation, it is even more important that select this kind
Driving mechanism in this way can't be because being arranged additional component and shadow without additionally opening up mounting hole on shell of reactor 10
Ring the airtightness of entire trickle bed reactor.
When bed 11 be 3 or more when, settable multiple discharge ducts 12, correspondingly, pulling rope 134 be it is multiple, in order to just
In operation, each pulling rope 134 for being connected to corresponding cover board 130 can be marked respectively, wherein the mode of label is not
It is specifically limited, such as the metallic cable of optional different colours is connected to corresponding cover board 130, it can also be to each
Upper number and/or letter are remembered in the end positioned at discharge port 102 of pulling rope 134, when the catalysis for needing to unload some bed 11
When agent, corresponding pulling rope 134 is pulled.It may also be noted that deploying to ensure effective monitoring and control of illegal activities for the ease of pulling rope 134, so that setting
The pulling rope 134 of discharge duct 12 in upper layer passes sequentially through the inside of the discharge duct 12 in lower layer until discharge port 102.
When discharge duct 12 is multiple, the opposite port between adjacent discharge duct 12 aligns, in this way, being convenient for the stream of catalyst
It is dynamic.In addition, being preferably provided with multiple unloading efficiency for improving catalyst such as 2 discharge ducts 12 between adjacent bed 11.
It, can be in fixed branch for the ease of making fixed bracket 131 and support frame 132 be in connection status or discrete state
Buckle structure is set between frame 131 and support frame 132.Further, the buckle structure may include being set to fixed bracket 131
Buckle and being set to support frame 132 with the bayonet for buckling and matching.In addition, the buckle structure may include setting
In the buckle of support frame 132 and being set to fixed bracket 131 with the bayonet for buckling and matching.
In addition, connection component can be arranged in the outer wall of discharge duct 12, the end of connecting rope 133 by the connection component with
The outer wall of discharge duct 12 is connected, in such manner, it is possible to be bonded connecting rope 133 and the outer wall of discharge duct 12.
Further, the connection component may include the cylinder 136 and rotatably for being installed on the outer wall of discharge duct 12
The shaft 137 for being set to the inside of cylinder 136 and being connected with the end of connecting rope 133, the central axis upright of shaft 137 in
The short transverse of shell of reactor 10, the rotation of shaft 137 are able to drive the winding of connecting rope 133 or stretch out shaft 137.In bed
After layer 11 completes filling, shaft 137 rotates, and connecting rope 133 stretches out shaft 137, and support frame 132 is connected with fixed bracket 131,
Cover board 130 is covered in the bottom end opening of discharge duct 12, when needing to unload the catalyst in lower bed layer 11, corresponding pulling rope 134
Support frame 132 separate the bottom end for driving cover board 130 to remove discharge duct 12 simultaneously with fixed 131 phase of bracket by traction force to open
Mouthful, while the rotation of shaft 137 drives 133 twisting shaft 137 of connecting rope, in this way, after cover board 130 is removed, connecting rope 133
Length is suitably shortened, and the component such as cover board 130 for being connected to connecting rope 133 will not be because of the discharge duct 12 for blocking adjacent lower layer
Opening and influence the unloading of catalyst.In addition, the structure of entire connection component is simple, and operates convenient for operating personnel.
At least one hole can be offered on cover board 130, the aperture in the hole is less than the partial size of the catalyst.By covering
Hole is opened up on plate 130, when entire reaction system may make to be in the stage of reaction, the material in the trickle bed reactor is such as
Gas-liquid material can be uniformly distributed.It is not particularly limited as the shape in hole, such as can be circle, rectangle, pros
Shape, ellipse, diamond shape or triangle can also be in Five-pointed star, hexagon or other irregular shapes, naturally it is also possible to be
The combination of these shapes, this component can be combined by arbitrary hole of different shapes, such as the one end in hole is in arc-shaped,
Other end triangular shape can also be in rice-shaped.In addition, percent opening, that is, hole area summation and cover board 130 on cover board 130
The ratio of the gross area be not exposed to specific limitation, can be selected according to actual needs.It preferably, can be on cover board 130
Open up multiple equally distributed holes.
It, can also be with it should be pointed out that material used by component set in folding unit 13, can be stainless steel
It is other corrosion-and high-temp-resistant materials such as ceramics, Titanium, titanium alloy, metal zirconium or zircaloy.It certainly can also be other
Material does not make special limit herein.
It, can in order to enable the material such as gas-liquid material in the trickle bed reactor to be uniformly distributed in reaction time
At least one through-hole is opened up on the tube wall of discharge duct 12, is preferably provided with multiple through-holes, and makes multiple through-holes along discharging
The circumferential direction of the tube wall of pipe 12 is uniformly distributed.When being provided with multiple through-holes, the gross area for opening up throughhole portions is set
The summation for being placed in the area of all through-holes on discharge duct 12 can be the 10-90% of the gross area of the tube wall of discharge duct 12, in this way,
Further such that material is as described in being uniformly distributed in gas-liquid material in trickle bed reactor.Further, throughhole portions are opened up
The gross area is the gross area that the summation of the area for all through-holes being set on discharge duct 12 is preferably the tube wall of discharge duct 12
20%-80%, further, the gross area for opening up throughhole portions are set to the area of all through-holes on discharge duct 12
Summation is preferably the 30%-60% of the gross area of the tube wall of discharge duct 12.It is understood that preferable uniform pore diameter is in net
The pipe of shape structure is as discharge duct 12.
Each bed 11 includes the first packing layer, catalyst layer and the second packing layer set gradually from top to bottom, wherein
Can load porcelain ball in first packing layer, in the catalyst layer can loading catalyst, can load in second packing layer
Porcelain ball either protective agent, preferably protective agent RG series, such as RG-10, RG-10A/B/C, RG-20 and RG-30 etc., it is also necessary to
Illustrate, the different porcelain ball of partial size can be loaded in packing layer such as first packing layer, for example, can be in first filler
Multiple porcelain layers of balls are set gradually from top to bottom to load various sizes of porcelain ball respectively, in multiple porcelain from top to bottom in layer
In layers of balls, the partial size of the porcelain ball in the porcelain layers of balls is gradually become smaller, specifically, in multiple porcelain layers of balls from top to bottom,
Diameter can be set gradually for 3/4ths inches, one-half inch, quarter inch and 1/8th inches of porcelain ball, separately
Outside, the partial size of the porcelain ball in each porcelain layers of balls is identical.In addition, the thickness of multiple porcelain layers of balls is all the same, such as can be
200mm。
Further, discharge duct 12 can extend along the short transverse of shell of reactor 10, and the top end opening of discharge duct 12 is stretched
Enter first packing layer of the bed 11 on the upper layer in adjacent bed 11, the bottom end opening of discharge duct 12 protrudes into the bed of lower layer
Second packing layer or the catalyst layer in layer 11.When in the bed 11 that the bottom end opening of discharge duct 12 protrudes into lower layer
When the catalyst layer, it can be further reduced the air-teturning mixed phenomenon of catalyst, the catalyst unloaded is directly carried out again
It is raw, and the efficiency for unloading carried catalyst is substantially increased, thus accelerate the linking between reaction time.
As shown in fig. 1, the supporting beam 110 for being used to support catalyst can need not be set positioned at the bed of bottommost 11, and
The support for being connected to the inner wall of shell of reactor 10 is provided in each bed 11 of the top of the bed 11 of bottommost
Beam 110 and the first packing layer, catalyst layer and the second packing layer for being set in turn in supporting beam 110, supporting beam 110 can be lattice
Grid structure.In order to remove solid impurity in the material for entering feed inlet 100, can be located in the bed 11 close to feed inlet 100
Scale trap 16 is set between the catalyst layer of the bed 11 of top and second packing layer.
In order to enable the raw material into feed inlet 100 is spread, distributor 14 can be installed at feed inlet 100, in addition,
At discharge port 101 mountable product collector 18 in order to product collection.The inside of shell of reactor 10 is mountable have so that
The distribution plate 15 that material is evenly distributed, distribution plate 15 are located at the top of corresponding bed 11.In addition, can between adjacent bed 11
Cold hydrogen box 17 is provided in order to control the temperature in the trickle bed reactor so that the reacting balance in reactor into
The service life of catalyst is gone and extends, cold hydrogen box 17 may be disposed at the top of distribution plate 15.
The effect that the present invention will now be further described by way of examples.
Embodiment
Embodiment 1
After trickle bed reactor completes a reaction time, the intake of raw material is gradually decreased, and also to the drip
It is passed through naphtha in bed reactor, later, nitrogen is passed through in trickle bed reactor, opens discharge port 102 then successively to unload
Under catalyst in each bed 11.Wherein, the configuration in the trickle bed reactor is as follows:
The shell of reactor 10 of feed inlet 100, discharge port 101 and discharge port 102 is offered substantially in cylindrical body, reactor
The internal diameter of shell 10 is 2438mm, in shell of reactor 10 setting there are three bed 11, be followed successively by from bottom to top the first bed,
Second bed and third bed, in which:
The a height of 5300mm of the headroom of first bed, leave a blank a height of 300mm on the top of the first bed, and the first bed is from top to bottom
Set gradually the porcelain layers of balls (the porcelain ball that diameter is 1/4 inch is loaded in the porcelain layers of balls) with a thickness of 200mm, with a thickness of 4200mm's
Catalyst bed (catalyst loaded in this layer is denoted as catalyst C, i.e. catalyst RN-32V), the porcelain layers of balls with a thickness of 200mm
(it is 1/8 inch of porcelain ball that diameter is loaded in the porcelain layers of balls), with a thickness of the porcelain layers of balls of 200mm, (diameter is loaded in the porcelain layers of balls is
1/4 inch of porcelain ball), with a thickness of 200mm porcelain layers of balls (it is 1/2 inch of porcelain ball that diameter is loaded in the porcelain layers of balls) and with a thickness of
The porcelain layers of balls (the porcelain ball that diameter is 3/4 inch is loaded in the porcelain layers of balls) of 200mm；
The a height of 5180mm of the headroom of second bed, leave a blank high 300mm on the top of the second bed, the second bed from top to bottom according to
Secondary setting is with a thickness of the porcelain layers of balls (loading the porcelain ball that diameter is 1/4 inch in the porcelain layers of balls) of 180mm, urging with a thickness of 4000mm
Agent bed (catalyst loaded in this layer is denoted as catalyst B, i.e. catalyst RT-1), porcelain layers of balls (porcelain with a thickness of 200mm
In layers of balls load diameter be 1/8 inch porcelain ball), with a thickness of 200mm porcelain layers of balls (in the porcelain layers of balls filling diameter be 1/4 English
Very little porcelain ball), with a thickness of the porcelain layers of balls (loading diameter in the porcelain layers of balls is 1/2 inch of porcelain ball) of 200mm and with a thickness of 200mm
Porcelain layers of balls (it is 3/4 inch of porcelain ball that diameter is loaded in the porcelain layers of balls)；
The a height of 7270mm of the headroom of third bed, leave a blank high 300mm on the top of third bed, third bed from top to bottom according to
It is secondary that the protection oxidant layer (protective agent in this layer is RG-30) with a thickness of 500mm is set, with a thickness of the catalyst bed of 5400mm
(catalyst loaded in this layer is denoted as catalyst A, i.e. RHC-131) (loads with a thickness of the porcelain layers of balls of 200mm in the porcelain layers of balls
The porcelain ball that diameter is 1/8 inch), with a thickness of 200mm porcelain layers of balls (in the porcelain layers of balls load diameter be 1/4 inch porcelain ball),
With a thickness of the porcelain layers of balls (loading the porcelain ball that diameter is 1/2 inch in the porcelain layers of balls) of 200mm and with a thickness of the porcelain layers of balls of 200mm
(the porcelain ball that diameter is 3/4 inch is loaded in the porcelain layers of balls)；
Discharge duct 12 is set between adjacent bed 11, and the top port of each discharge duct 12 protrudes into adjacent bed 11
In the bed 11 on upper layer is the porcelain layers of balls of 3/4 inch of porcelain ball with diameter, and the bottom port of each discharge duct 12 protrudes into lower layer
Bed 11 in diameter be 1/4 inch of porcelain ball porcelain layers of balls, the length of each discharge duct 12 is identical, and each discharging
Setting folding unit 13 on pipe 12, wherein folding unit 13 can be for preferred structure provided by the invention (i.e. shown in Fig. 2
Structure) folding unit 13.
Above-mentioned catalyst A, catalyst B and catalyst C are respectively different types of catalyst.
Comparative example
Comparative example 1
Select trickle bed reactor same as Example 1, wherein folding unit is not provided on each discharge duct 12
13, remaining configuration condition is all the same, and mode same as Example 1 is selected to unload the catalyst in each bed 11.
Test example
Detect to obtain the back-mixing rate of the catalyst A and catalyst B in embodiment 1-5 and comparative example 1 by following methods: will
It screens out to come from the catalyst in the material that each bed 11 unloads, by the composition of the catalyst loaded in each bed 11
Different each other, after later crushing the catalyst in corresponding bed 11, analysis metal composition is to obtain corresponding catalyst
Back-mixing rate, as a result as shown in Table 1 below.
Table 1
By above-mentioned table 1 it is known that greatly reducing returning for catalyst on discharge duct 12 after setting folding unit 13
Mixed rate, thus substantially reduces the air-teturning mixed phenomenon of catalyst.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention, including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
Claims (13)
1. a kind of trickle bed reactor, which is characterized in that the trickle bed reactor includes with the feed inlet entered for raw material
(100), for product discharge discharge port (101) and for catalyst discharge discharge port (102) shell of reactor (10) and
It is installed in the shell of reactor (10) and along the multiple for loading of the short transverse of the shell of reactor (10) arrangement
The bed (11) of catalyst is connected between the adjacent bed (11) by discharge duct (12), is pacified on the discharge duct (12)
Equipped with the folding unit (13) for being opened and closed the discharge duct (12).
2. trickle bed reactor according to claim 1, which is characterized in that the folding unit (13) includes described in covering
The cover board (130) of the bottom end opening of discharge duct (12) and the driving mechanism being opened and closed for controlling the cover board (130).
3. trickle bed reactor according to claim 2, which is characterized in that the driving mechanism includes:
Fixation kit, the fixation kit include be set to the discharge duct (12) outer wall fixation bracket (131) and with institute
The detachably connectable support frame (132) of fixed bracket (131) is stated,
Connecting rope (133), the both ends of the connecting rope (133) outer wall and support frame as described above with the discharge duct (12) respectively
(132) it is connected, the cover board (130) is connected to the connecting rope (133), and
One end of pulling rope (134), the pulling rope (134) is connected to support frame as described above (132), the pulling rope (134)
The other end extends to the discharge port (102), and the pulling rope (134) makes support frame as described above (132) after by traction force
The bottom end opening for mutually separating with the fixed bracket (131) and the cover board (130) being driven to remove the discharge duct (12).
4. trickle bed reactor according to claim 3, which is characterized in that the fixed bracket (131) and the support
It is connected between frame (132) by buckle structure, wherein
The buckle structure includes being set to the buckle of the fixed bracket (131) and being set to support frame as described above (132)
The bayonet matched with the buckle, or
The buckle structure includes being set to the buckle of support frame as described above (132) and being set to the fixed bracket (131)
With the bayonet for buckling and matching.
5. trickle bed reactor according to claim 3, which is characterized in that the outer wall of the discharge duct (12) is provided with company
The end of connected components, the connecting rope (133) is connected by the connection component with the outer wall of the discharge duct (12).
6. trickle bed reactor according to claim 5, which is characterized in that the connection component includes being installed on described unload
The cylinder (136) of the outer wall of expects pipe (12) and be rotationally arranged at the cylinder (136) inside and with the connecting rope
(133) shaft (137) that end is connected, the central axis upright of the shaft (137) is in the shell of reactor (10)
Short transverse, the rotation of the shaft (137) is able to drive the connecting rope (133) winding or stretches out the shaft
(137)。
7. trickle bed reactor according to claim 3, which is characterized in that support frame as described above is equipped with connection on (132)
The end of ring (138), the pulling rope (134) is connected to the connection ring (138).
8. trickle bed reactor according to claim 2, which is characterized in that offer at least one on the cover board (130)
A hole, the aperture in the hole are less than the partial size of the catalyst.
9. trickle bed reactor according to claim 1, which is characterized in that offered on the discharge duct (12) multiple logical
Hole, multiple through-holes are uniformly distributed along the circumferential direction of the tube wall of the discharge duct (12), open up the gross area of throughhole portions
For the 10-90% of the gross area of the tube wall of the discharge duct (12).
10. the trickle bed reactor according to any one of claim 3-7, which is characterized in that each bed
It (11) include the first packing layer, catalyst layer and the second packing layer set gradually from top to bottom, the discharge duct (12) is along institute
The short transverse for stating shell of reactor (10) extends, and the top end opening of the discharge duct (12) protrudes into the adjacent bed (11)
In upper layer the bed (11) first packing layer, the bottom end opening of the discharge duct (12) protrudes into the described of lower layer
Second packing layer or the catalyst layer in bed (11).
11. trickle bed reactor according to claim 10, which is characterized in that the discharge duct (12) be it is multiple, it is adjacent
The discharge duct (12) between opposite port align, be connected to each of the corresponding cover board (130) and described lead
Drawstring (134) is marked respectively.
12. trickle bed reactor according to claim 10, which is characterized in that being equipped at the feed inlet (100) makes
It obtains and product collector (18) is installed at the distributor (14) and/or the discharge port (101) of the raw material diffusion.
13. trickle bed reactor according to claim 10, which is characterized in that close to the described of the feed inlet (100)
It is provided between the catalyst layer of bed (11) and second packing layer scale trap (16), and/or, it is described
The inside of shell of reactor (10) is equipped with so that the distribution plate (15) that material is evenly distributed, the distribution plate (15) are located at corresponding
The bed (11) top, be provided with cold hydrogen box (17) between the adjacent bed (11), cold hydrogen box (17) position
In the top of the distribution plate (15).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025292.4A CN109718722B (en) | 2017-10-27 | 2017-10-27 | Trickle bed reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711025292.4A CN109718722B (en) | 2017-10-27 | 2017-10-27 | Trickle bed reactor |
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| CN109718722B CN109718722B (en) | 2022-03-11 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528737A (en) * | 2003-10-10 | 2004-09-15 | 清华大学 | Apparatus and method for preparing aminobenzene by nitrobenzene gas-phase hydrogenation |
| CN101121635A (en) * | 2007-07-19 | 2008-02-13 | 新疆天业（集团）有限公司 | Method for preparing vinyl chloride by circulating fluidized bed reactor and device thereof |
| CN101705837A (en) * | 2009-11-27 | 2010-05-12 | 兖州煤业股份有限公司 | Multi-loading point coal flow control system |
-
2017
- 2017-10-27 CN CN201711025292.4A patent/CN109718722B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528737A (en) * | 2003-10-10 | 2004-09-15 | 清华大学 | Apparatus and method for preparing aminobenzene by nitrobenzene gas-phase hydrogenation |
| CN101121635A (en) * | 2007-07-19 | 2008-02-13 | 新疆天业（集团）有限公司 | Method for preparing vinyl chloride by circulating fluidized bed reactor and device thereof |
| CN101705837A (en) * | 2009-11-27 | 2010-05-12 | 兖州煤业股份有限公司 | Multi-loading point coal flow control system |
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| CN109718722B (en) | 2022-03-11 |
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