CN108499493A - A kind of gas-liquid counter current reaction unit - Google Patents
A kind of gas-liquid counter current reaction unit Download PDFInfo
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- CN108499493A CN108499493A CN201810410353.7A CN201810410353A CN108499493A CN 108499493 A CN108499493 A CN 108499493A CN 201810410353 A CN201810410353 A CN 201810410353A CN 108499493 A CN108499493 A CN 108499493A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 91
- 239000007788 liquid Substances 0.000 title claims abstract description 78
- 239000003054 catalyst Substances 0.000 claims abstract description 64
- 239000012071 phase Substances 0.000 claims abstract description 50
- 239000007791 liquid phase Substances 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims description 52
- 239000012530 fluid Substances 0.000 claims description 20
- 230000008676 import Effects 0.000 claims description 13
- 239000007792 gaseous phase Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 13
- 238000009826 distribution Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000005049 silicon tetrachloride Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0285—Heating or cooling the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of gas-liquid counter current reaction units, the device is by being arranged the first catalyst dense layer and the second catalyst dense layer, sealing function can be played, bulk catalyst is avoided material leakage phenomenon occur, increase the amount of catalyst, the compact structure of itself is also resistant to big flow liquid phase simultaneously, and the gas phase of rising can be made by identical resistance, good initial distribution is formed to be conducive to gas phase；In addition the dense layer can maintain suitable liquid holdup, eliminate siccative and short circuit phenomenon, and coordinate that resistance is small, gas-liquid is in contact and readily accumulates uniform bulk catalyst layer, and the device is finally enable to keep gas-liquid mass transfer effect for a long time；Stripping section is set again, effectively the liquid phase flowed into it can be heated, the deliquescent gas-phase heating carried by liquid phase is escaped, maintain good Liquid Flow, improve gas phase conversion rate；It is last only to need setting stripping section and conversion zone, greatly reduce the complexity of device.
Description
Technical field
The invention belongs to reaction unit preparing technical fields, and in particular to a kind of gas-liquid counter current reaction unit.
Background technology
In air-liquid contact physics or chemical reaction process existing for catalyst or filler, air-liquid type of flow generally use
Two kinds, one is air-liquid cocurrent modes in the same direction, another is the reversed reflux type of air-liquid.For counter-current modes of operation
For, the mass-transfer efficiency of stable operation and air-liquid two-phase is two important considerations, there may come a time when to become decision feasible process
Property key factor, the especially mass-transfer efficiency of air-liquid two-phase is that researcher wishes always the factor improved.
In order to improve the mass-transfer efficiency of air-liquid two-phase, multigroup high efficient gas and liquid mass transfer component would generally be arranged in researcher, such as
Chinese patent literature CN 204265444U disclose a kind of gas-liquid counter current reactor comprising gas-liquid counter current reactor shell, instead
Answer device housing bottom in distributed inlet duct is arranged on gas source pipeline, reactor shell top is in hydride source pipeline
The distributed feeding device of upper setting, inside reactor are arranged multigroup high efficient gas and liquid mass transfer component, in the setting of reactor middle section position
Gas exhaustion line is arranged in the formula of inserting cooling device, reactor head, and liquid discharge pipe road, gas discharge pipe therein is arranged in bottom
Road takes off liquid/gas separator with oxidized tail gas and is connected, and liquid discharge pipe road is connected with oxidation tower bottom liquid degassing separator.
In above-mentioned technology, composite construction that high efficient gas and liquid mass transfer component is made of sieve plate, filler and packing support grid
Form is arranged much 5~20 of number, although the setting can improve gas-liquid mass transfer effect, at the same time, also increases device
Complexity easily occur material leakage phenomenon after long time running, reduce liquid holdup, lead to siccative and short circuit phenomenon occur,
It finally is degrading gas-liquid mass transfer effect, the phenomenon is even more serious in the case of big flow liquid phase.Therefore how to provide a kind of device
Simply, can keep for a long time gas-liquid mass transfer effect, suitable for big flow liquid phase gas-liquid counter current reaction unit be this field there is an urgent need for
The technical problem solved.
Invention content
Therefore, that the technical problem to be solved by the present invention is to existing gas-liquid counter current structure of reactor is complicated, be difficult to protect for a long time
The defect for holding gas-liquid mass transfer effect, to provide, one kind is simple in structure, can keep gas-liquid mass transfer effect for a long time, is suitable for big stream
Measure the gas-liquid counter current reaction unit of liquid phase.
For this purpose, the technical solution that the application takes is,
A kind of gas-liquid counter current reaction unit, including shell and the first shell end being oppositely arranged and second shell end, close to described
Fluid inlet is arranged in first shell end on the housing, close to the second shell end and far from the fluid inlet in the shell
Upper setting gas phase import；
On from the second shell end to the direction at the first shell end, between the second shell end and the fluid inlet
Shell successively include stripping section and conversion zone, the conversion zone successively include the first catalyst dense layer, bulk catalyst layer and
Second catalyst dense layer.
Further, further include liquid-phase outlet, the shell is set to close to the second shell end and far from the stripping section
On body, the liquid-phase outlet is connected to the fluid inlet.
Further, the length ratio of the stripping section and conversion zone is (1-2):(4-20).
Further, the thickness of the first catalyst dense layer, bulk catalyst layer and the second catalyst dense layer it
Than for (1-2):(10-100):(2-4).
Further, the conversion zone is at least two-stage.
Further, the ratio of height to diameter (8~3) of the conversion zone:1；
The ratio of height to diameter (8~3) of the stripping section:1.
Further, the conversion zone is between the gas phase import and the fluid inlet；
The stripping section is between the second shell end and the gas phase import.
Further, further include gas phase homogenizing zone, be set in the shell, and reacted with described positioned at the stripping section
Between section, the gas phase import is connected to the gas phase homogenizing zone；
Liquid phase is evenly distributed with section, is set in the shell, and between the conversion zone and the first shell end, the liquid
Section is mutually evenly distributed with to be connected to the fluid inlet.
Further, further include demisting section, be set in the shell, and section and described first is evenly distributed with positioned at the liquid phase
Between shell end, the ratio between the demisting section and the thickness of the first catalyst dense layer are (2-5)：(1-3).
Further, further include gaseous phase outlet, be set on the first shell end；
Anti-wall flow device is set in the conversion zone, to prevent wall flow phenomenon.
Technical solution of the present invention has the following advantages that：
1. gas-liquid counter current reaction unit provided by the present invention, from second shell end to the direction at first shell end on, exist for the first time
Shell between second shell end and fluid inlet sets gradually stripping section and conversion zone, and the conversion zone includes the first catalysis successively
Agent dense layer, bulk catalyst layer and the second catalyst dense layer, by the way that the first catalyst dense layer and the second catalyst is arranged
Dense layer can play sealing function, and bulk catalyst is avoided material leakage phenomenon occur, increase the amount of catalyst, while itself is close
Real structure is also resistant to big flow liquid phase, and the gas phase of rising can be made by identical resistance, to be conducive to gas phase formed it is good
Initial distribution；In addition the dense layer can maintain suitable liquid holdup, eliminate siccative and short circuit phenomenon, and coordinate that resistance is small, gas
Uniform bulk catalyst layer is readily accumulated in liquid phase contact, and the device is finally enable to keep gas-liquid mass transfer effect for a long time；Again
Stripping section is set, effectively the liquid phase flowed into it can be heated, the deliquescent gas-phase heating carried by liquid phase is escaped, maintained
Good Liquid Flow improves gas phase conversion rate；It is last only to need setting stripping section and conversion zone, greatly reduce the complexity of device
Degree.
2. gas-liquid counter current reaction unit provided by the present invention, by the length ratio and the institute that optimize stripping section and conversion zone
State the first catalyst dense layer, bulk catalyst layer and the second catalyst dense layer the ratio between thickness, can effectively optimize gas-liquid two
The flowing of phase increases gas-liquid mass transfer effect；By the way that the ratio of height to diameter of the ratio of height to diameter and stripping section of conversion zone is arranged, equipment resistance can be reduced
Power optimizes Liquid Flow, while reducing manufacturing cost.
3. gas-liquid counter current reaction unit provided by the present invention, which is suitable for chemical industry, petrochemical industry, medication chemistry etc.
Field, it is particularly applicable under specific temperature and pressure, the reaction product of gas-phase feed and liquid phase feeding is pure gas phase and not
Reaction liquid phase feeding temperature can become liquid phase after reducing, such as silicon tetrachloride reacts with hydrogen and generates trichlorosilane, dichloro-dihydro
Silicon and hydrogen chloride strictly control feeding temperature and pressure in reaction process, it is ensured that liquid phase silicon tetrachloride is not vaporized, product three
Chlorine hydrogen silicon and dichlorosilane are not liquefied.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of gas-liquid counter current reaction unit in the embodiment of the present invention；
Wherein reference numeral is expressed as：
1- stripping sections；2- conversion zones；2-1- the first catalyst dense layers；2-2- bulk catalyst layers；2-3- first is catalyzed
Agent dense layer；3- fluid inlets；4- gas phase imports；5- liquid-phase outlets；6- gaseous phase outlets；7- demisting sections；8- liquid is evenly distributed with section；9-
Anti-wall flow device；10- gas phase homogenizing zones；11- is pumped；12- first shells end；13- second shells end.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
Embodiment 1
Present embodiments provide a kind of gas-liquid counter current reaction unit, as shown in Figure 1, include shell and be oppositely arranged first
Shell end 12 and second shell end 13, when being placed vertically such as shell, first shell end 12 is the top of shell, and second shell end 13 is shell
Fluid inlet 3 is arranged close to first shell end 12 in bottom end on shell, close to second shell end 13 and far from fluid inlet 3 in shell
Upper setting gas phase import 4；
On from second shell end 13 to the direction at first shell end 12, the shell between second shell end 13 and fluid inlet 3 is successively
Including stripping section 1 and conversion zone 2, conversion zone 2 includes the first catalyst dense layer 2-1, bulk catalyst layer 2-2 and second successively
Catalyst dense layer 2-3, such as in the present embodiment, the first catalyst dense layer 2-1 and the second catalyst dense layer 2-3 are bundle
Packet catalyst layer, the bale packing catalyst are that catalyst is packaged bundled or packet, so that catalyst particles intergranular gap is become smaller, become close
It is real；Bulk catalyst layer 2-2, which uniformly dissipates catalyst, piles up the first catalyst dense layer 2-1 and the second catalyst dense layer 2-
Between 3；Specifically, bale packing catalyst layer is to be much smaller than the filter screen tight of catalyst particle diameter in catalyst by hole
It goes up and is compacted and is formed；In the present embodiment, conversion zone 2 is at least two-stage, more specifically, upper conversion zone and lower conversion zone group
At upper conversion zone is identical with the structure of lower conversion zone；Stripping section 1 can need to select structure shape according to amount of heat needed for system etc.
Tubular heat exchanger structure, heating coil, electric heater such as can be used in formula；Preferably stripping section 1 is from bottom to top by bringing-up section and mistake
Hot arc forms, and bringing-up section and superheat section are 1：(2-5), in this way setting can preferably come out the gas evaporation in liquid phase.
In above-mentioned gas-liquid counter current reaction unit, by the way that the first catalyst dense layer 2-1 and the second catalyst dense layer is arranged
2-3 can play sealing function, and bulk catalyst is avoided material leakage phenomenon occur, increase the amount of catalyst, while the closely knit knot of itself
Structure is also resistant to big flow liquid phase, and the gas phase of rising can be made by identical resistance, to be conducive to gas phase formed it is good initial
Distribution；In addition the dense layer can maintain suitable liquid holdup, eliminate siccative and short circuit phenomenon, and coordinate that resistance is small, liquid phase
Uniform bulk catalyst layer 2-2 is readily accumulated in contact, and the device is finally enable to keep gas-liquid mass transfer effect for a long time；It sets again
Stripping section 1 is set, effectively the liquid phase flowed into it can be heated, the deliquescent gas-phase heating carried by liquid phase is escaped, maintained
Good Liquid Flow improves gas phase conversion rate；It is last only to need setting stripping section 1 and conversion zone 2, greatly reduce answering for device
Miscellaneous degree.Meanwhile first the setting of catalyst dense layer 2-1, bulk catalyst layer 2-2 and the second catalyst dense layer 2-3 remove
Strengthen reaction and mass transport process, additionally aids and eliminate enlarge-effect and wall stream effect.
In the actual production process, in order to improve gas phase conversion efficiency, gas phase amount is as few as possible, and liquid phase is excessive, liquid phase object
Material remains that liquid is constant from top to bottom, and reaction product is gaseous state, while in order to energy saving, and improves the reaction unit
Transformation efficiency, further include liquid-phase outlet 5,1 be set on shell close to second shell end 13 and far from stripping section, liquid-phase outlet 5
It is connected to fluid inlet 3, in this way, excessive liquid phase falls to stripping section 1, by stripping section 1 by gas evaporation therein,
Liquid phase then drops to second shell end 13, and is come out from liquid-phase outlet 5, by 11 pressurization of pump and the fresh liquid phase object outside system
Enter reaction unit after material mixing to recycle.
The length ratio of embodiment preferably, stripping section 1 and conversion zone 2 is (1-2):(4-20), first urges
The ratio between thickness of agent dense layer 2-1, bulk catalyst layer 2-2 and the second catalyst dense layer 2-3 is (1-2):(10-100):
(2-4), so in this way, the length ratio and the first catalyst dense layer of optimization stripping section and conversion zone, in bulk urging
The ratio between the thickness of agent layer and the second catalyst dense layer can effectively optimize the flowing of gas-liquid two-phase, increase gas-liquid mass transfer effect；
More specifically, the thickness of the first catalyst dense layer 2-1 is 100~300mm,
In order to reduce equipment resistance, optimize Liquid Flow, while reducing manufacturing cost, the ratio of height to diameter (8~3) of conversion zone 2:
1；The ratio of height to diameter (8~3) of stripping section 1:1.
Embodiment 2
Present embodiments provide a kind of gas-liquid counter current reaction unit, on the basis of above-described embodiment 1, in order to make gas phase into
Material is uniformly distributed, and improves gas-liquid mass transfer effect, and is entered in conversion zone 2 after being thoroughly mixed with 1 escaping gas of stripping section, is also wrapped
Gas phase homogenizing zone 10 is included, is set in shell, and between stripping section 1 and conversion zone 2, gas phase import 4 and gas phase homogenizing zone
10 connections, further, even gas distribution section are arranged gas distributor and parallel works, parallel works concretely diversion pipe；
In order to carry out refining uniformly distributed by the liquid phase of the secondary collection of liquid phase feeding and middle part and form little particle drop, entering
Energy fast filming, reaches best initial distribution effect, further includes that liquid phase is evenly distributed with section 8, be set in shell when conversion zone 2, and
Between conversion zone 2 and first shell end 12, liquid phase is evenly distributed with section 8 and is connected to fluid inlet 5.
Embodiment 3
A kind of gas-liquid counter current reaction unit is present embodiments provided, further includes removing on the basis of above-described embodiment 1 or 2
Mist section 7, is set in shell, and is evenly distributed between section 8 and first shell end 12 positioned at liquid phase, and demisting section 7 and the first catalyst are closely knit
The ratio between the thickness of layer 2-3 is (2-5)：(1-3), in this way setting can will be continued by conversion zone in the entrainment gas phase risen
Mist completely eliminates, while the reaction was continued with mist whereabouts for unreacted gas, reaches optimum efficiency；Specifically, demisting section 7 is
Demister, more specifically, demister can be the silk screen that thickness is 200~500mm；
Further include gaseous phase outlet 4, be set on first shell end 12, gas phase reaction product can be collected in time in this way, and will
It leads to the external world in time；
Anti-wall flow device 9 is set in conversion zone 2, to prevent wall flow phenomenon, is improved gas-liquid two-phase and is distributed in conversion zone 2
Anti-wall flow device 9 is arranged especially in the bed of larger ratio of height to diameter, can effectively alleviate to make mass-transfer efficiency improve for uniformity
Wall flow phenomenon provides reaction mass transfer efficiency.
Embodiment 4
Present embodiments provide a kind of gas-liquid counter current reaction unit, above-described embodiment 1,2 or on the basis of, as variable
The embodiment of type, conversion zone are level-one；The thickness of first catalyst dense layer 2-1 and the second catalyst dense layer 2-3 are equal；
Further, conversion zone 2 is between gas phase import 4 and fluid inlet；
Stripping section 1 is between second shell end 13 and gas phase import 4.
The operation principle of above-mentioned gas-liquid counter current reaction unit is as follows：Cold conditions gaseous phase materials enter from gas homogenization section 10 to react
Device, liquid phase material from liquid be evenly distributed with section 8 enter reaction unit, liquid phase conversion zone 2 inversely contact conducted heat, mass transfer and
Reaction；After the completion of reaction, reaction product be evenly distributed in section 8 across liquid in a gaseous form be advanced into demisting section 7 (strengthen reaction removes
Mist section), unreacted liquid phase material is mingled with partial solubility reaction product or unreacted gas phase and wears gas after the outflow of conversion zone 2
Body homogenizing zone 10 enters stripping section 1；The unreacted gentle phase product of gas can carry a small amount of when being evenly distributed with section 8 across liquid
Liquid phase material, the gas-liquid mixture enter demisting section 7 further react, pure Gaseous materials are finally discharged；It is anti-to be mingled with dissolubility
The liquid of product is answered to enter stripping section 1, which is made of heating tubulation, low head and pedestal, after being heated using external heat source,
Reaction product in liquid phase is completely vaporized to escape from liquid phase and be detached；Gas and gas-phase feed after effusion is in gas phase homogenizing zone 10
It is uniformly mixed and enters the progress mass-and heat-transfer of conversion zone 2 as gaseous phase materials；Liquid is evenly distributed with section 8 and liquid distribution trough is arranged, by liquid phase
Material refinement distribution, uniformly enters conversion zone 2.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of gas-liquid counter current reaction unit, including shell and the first shell end being oppositely arranged and second shell end, close to described the
Fluid inlet is arranged in one shell end on the housing, on the housing close to the second shell end and far from the fluid inlet
Gas phase import is set, which is characterized in that
On from the second shell end to the direction at the first shell end, the shell between the second shell end and the fluid inlet
Include stripping section and conversion zone successively, the conversion zone includes the first catalyst dense layer, bulk catalyst layer and second successively
Catalyst dense layer.
2. gas-liquid counter current reaction unit according to claim 1, which is characterized in that further include,
Liquid-phase outlet is set to close to the second shell end and far from the stripping section on the shell, the liquid-phase outlet with
The fluid inlet connection.
3. gas-liquid counter current reaction unit according to claim 1 or 2, which is characterized in that the stripping section and conversion zone
Length ratio is (1-2):(4-20).
4. gas-liquid counter current reaction unit according to any one of claim 1-3, which is characterized in that first catalyst
The ratio between thickness of dense layer, bulk catalyst layer and the second catalyst dense layer is (1-2):(10-100):(2-4).
5. the gas-liquid counter current reaction unit according to any one of claim 1-4, which is characterized in that the conversion zone is at least
For two-stage.
6. gas-liquid counter current reaction unit according to any one of claims 1-5, which is characterized in that the height of the conversion zone
Diameter ratio (8~3):1；
The ratio of height to diameter (8~3) of the stripping section:1.
7. the gas-liquid counter current reaction unit according to any one of claim 1-6, which is characterized in that the conversion zone is located at
Between the gas phase import and the fluid inlet；
The stripping section is between the second shell end and the gas phase import.
8. the gas-liquid counter current reaction unit according to any one of claim 1-7, which is characterized in that further include,
Gas phase homogenizing zone is set in the shell, and between the stripping section and the conversion zone, the gas phase import
It is connected to the gas phase homogenizing zone；
Liquid phase is evenly distributed with section, is set in the shell, and between the conversion zone and the first shell end, the liquid phase is equal
Cloth section is connected to the fluid inlet.
9. gas-liquid counter current reaction unit according to claim 8, which is characterized in that further include,
Demisting section is set in the shell, and is evenly distributed between section and the first shell end positioned at the liquid phase, the demisting section
It is (2-5) with the ratio between the thickness of the first catalyst dense layer：(1-3).
10. the gas-liquid counter current reaction unit according to any one of claim 1-9, which is characterized in that further include,
Gaseous phase outlet is set on the first shell end；
Anti-wall flow device is set in the conversion zone, to prevent wall flow phenomenon.
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