CN108554353A - A kind of venturi injection circulation esterifier - Google Patents
A kind of venturi injection circulation esterifier Download PDFInfo
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- CN108554353A CN108554353A CN201810641643.2A CN201810641643A CN108554353A CN 108554353 A CN108554353 A CN 108554353A CN 201810641643 A CN201810641643 A CN 201810641643A CN 108554353 A CN108554353 A CN 108554353A
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- blade
- venturi
- esterifier
- circulation
- inclination
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- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000004014 plasticizer Substances 0.000 claims abstract description 25
- 150000002148 esters Chemical class 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010992 reflux Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 description 18
- 230000032050 esterification Effects 0.000 description 13
- 238000005886 esterification reaction Methods 0.000 description 13
- 238000002156 mixing Methods 0.000 description 9
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 8
- 239000000376 reactant Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 5
- 150000008065 acid anhydrides Chemical class 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000005591 trimellitate group Chemical group 0.000 description 2
- -1 Formic acid dioctyl ester Chemical class 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 1
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- 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
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00081—Tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention provides a kind of venturi injection circulation esterifier, is used for the industrialized production of ester plasticizer, and the venturi injection circulation esterifier includes：Reactor shell, heating system, stirring system, venturi type injection circulation system and alcohol reflux system.The equipment of the present invention improves the production efficiency of ester plasticizer, and production cost is greatly lowered and saves energy consumption, to improve the ester plasticizer competitiveness of product in market.
Description
Technical field
The present invention relates to a kind of reactors more particularly to a kind of venturi of industrialized production for ester plasticizer to spray
Penetrate circulation esterifier.
Background technology
Plasticizer is the high molecular material auxiliary agent being widely used in industrial production, also referred to as plasticiser.It is a kind of high
The substance of boiling point, low volatility, molecular structure have polar portion and nonpolar moiety.Because plasticizer molecule can be inserted into height
Between polymers strand, weakens intermolecular force, increase the plasticity of high polymer, reduce the processing temperature of high polymer, therefore
Plasticizer is added in plastic processing, the material modulus of low plastics, hardness, brittle temperature and softening temperature can be reduced, may be used also
To improve elongation, flexibility and flexibility.
It is well known that often causing plastic ageing since volatilization, extraction, migration of plasticizer etc. are lost.And inclined benzene
Three sour three monooctyl esters have extremely excellent heat resistance, migration and electrical insulating property etc. as a kind of new special top grade plasticizer
Feature, it is also increasing to its demand in plastic industry and telecommunication cause using upper increasingly wider.Trioctyl trimellitate (TOTM) is given birth to
Production. art is simple, easily prepared, and price is again low compared with polyester plasticizer, not only comprehensive durability with Reoplex, and
And also there is the good cryogenic property of monomer-plasticizer, intermiscibility, processability and low temperature properties are superior to polyester plasticizer.Institute
With big promising one of the kind as primary plasticizer of trioctyl trimellitate (TOTM).
The production of traditional trioctyl trimellitate (TOTM) be by the inclined acid anhydride of primary raw material and octanol in esterifier with certain
Ratio coordinates, and is subject to temperature appropriate, pressure condition, keeps enough time to complete esterification, generates tri trimellitate
Monooctyl ester.However, traditional handicraft there are low output, energy consumption is big, product yield is low, unstable quality the shortcomings of, be unsuitable for industrializing
Production.Therefore, in view of the above-mentioned problems, it is necessary to propose further solution.
Invention content
The purpose of the present invention is to provide a kind of venturi to spray circulation esterifier, is existed in the prior art with overcoming
Deficiency.
For achieving the above object, the present invention provides a kind of venturi injection circulation esterifier, is used for esters
The industrialized production of plasticizer, the venturi injection circulation esterifier include：Reactor shell, heating system, stirring
System, venturi type injection circulation system and alcohol reflux system；
The reaction compartment of the venturi injection circulation esterifier, the reaction are formed inside the reactor shell
The upper end of device cylinder is sealed by upper cover, and the lower end of the reactor shell is sealed by low head, is provided on the upper cover
The feed inlet being connected with the reaction compartment is provided with the discharge port being connected with the reaction compartment on the low head；
The heating system includes：Heating tube, the heating tube extend to lower part from the top of the reactor shell, institute
The coiled pipe that heating tube is arranged by straight tube and in a spiral form is stated to form；
The stirring system includes：Agitating shaft and at least three paddle components being fixed on the agitating shaft, at least
Three paddle components are alternatively arranged from top to bottom, and any paddle components include：First blade, the second blade and third blade,
First blade, the second blade and third blade are disposed adjacent from top to bottom, first blade, the second blade and
Three blades are respectively provided with respective angle of inclination；
The venturi type sprays circulation system：Venturi nozzle, circulating pump and First Heat Exchanger, the text mound
In nozzle be set on the upper cover, one end stretches in the reaction compartment, the other end of Venturi nozzle warp
Pipeline is connected with one end of the First Heat Exchanger, and the other end of the First Heat Exchanger is through the one of pipeline and the circulating pump
End is connected, and the other end of the circulating pump is connected through pipeline with the low head；
The alcohol reflux system includes：Gas phase mouth, the second heat exchanger and alcohol-water separation device, the gas phase mouth are set to institute
State on upper cover, the gas phase mouth is connected through pipeline with one end of second heat exchanger, second heat exchanger it is another
End is connected through pipeline with one end of the alcohol-water separation device, and the other end of the alcohol-water separation device is through pipeline and the venturi
The other end of nozzle is connected.
As the present invention venturi spray circulation esterifier improvement, the reactor shell include shell and
Inner casing in the shell forms chuck layer between the shell and inner casing.
The improvement of circulation esterifier is sprayed as the venturi of the present invention, further includes in the circumferential lateral surface of the shell
There is heat-preservation cotton.
The improvement of circulation esterifier is sprayed as the venturi of the present invention, is also set up in the interior sidewall surface of the inner casing
Have from wall type baffle and spiral guider, it is described to be arranged alternately successively from wall type baffle and spiral guider.
The improvement of circulation esterifier is sprayed as the venturi of the present invention, and emptying is additionally provided on the upper cover
Mouthful, it is additionally provided with sample tap and air inlet on the low head.
The improvement of circulation esterifier is sprayed as the venturi of the present invention, the stirring system further includes motor, institute
Electric machine external is stated in the top of the reactor shell, and is sequentially connected with the upper end of the agitating shaft.
The improvement that circulation esterifier is sprayed as the venturi of the present invention, in the heating system, adjacent straight tube
It is connected by coiled pipe, the heating tube that the coiled pipe arranged by straight tube and in a spiral form forms is in the reactor shell
Mandrel line extends to lower part from the top of the reactor shell.
The improvement of circulation esterifier is sprayed as the venturi of the present invention, first blade includes the first fixation
Plate and the second inclination blade for tilting blade and the other end positioned at the first of first fixed plate one end, described first inclines
Oblique blade is axisymmetricly arranged with the second inclination blade；Second blade includes the second fixed plate and is located at described
The third of second fixed plate one end tilts blade and the 4th of the other end the and tilts blade, and the third tilts blade and the described 4th
Blade is tilted axisymmetricly to be arranged；The third blade includes third fixed plate and positioned at third fixed plate one end
Second horizontal blade of first level blade and the other end, the first level blade and the described second horizontal blade are axisymmetricly
Setting.
The improvement of circulation esterifier is sprayed as the venturi of the present invention, described first, which tilts blade and second, tilts
The angle of inclination of blade is between 10 °~30 °；The third tilt blade and the 4th tilt the angle of inclination of blade 70 °~
Between 90 °.
Spray the improvement of circulation esterifier as the venturi of the present invention, first blade and the second blade it
Between and the second blade and third blade between be both provided with gasket.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is same in sucking slurry by venturi type nozzle
The mixing of Shi Jinhang slurries is effectively improved mixed effect, and stirring system uses three layers of blade group device, promotes stirring equal
It is even, and can accordingly shorten mixing time, while it being equipped with spiral guider in reactor shell inner wall, it is effectively formed slurry
Cycle, promotes material mixed effect significantly to reinforce, and esterification yield can be up to 99% or more after esterification completely, and the present invention is also by heating tube
It is improved to be made of straight tube and coiled pipe, improves heat transfer efficiency, meet the requirement of industrialized production ester plasticizer.The present invention
Equipment improve the production efficiency of ester plasticizer, production cost is greatly lowered and saves energy consumption, to improve esters
The plasticizer competitiveness of product in market.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in invention, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is that the venturi of the present invention sprays control table and one specific implementation mode of system cabinet in circulation esterifier
Floor map；
Fig. 2 is the plane enlarged diagram of any group of paddle components in Fig. 1.
In the venturi injection circulation esterifier of the present invention, the correspondence of each structure and label is：
Reactor shell 1, stirring system 2, heating system 3, Venturi nozzle 4, First Heat Exchanger 5, circulating pump 6, from wall
Formula baffle 7, discharge port 9, spiral guider 10, the second heat exchanger 11, alcohol-water separation device 12, discharge outlet 121, is put feed inlet 8
It eats dishes without rice or wine 13, sample tap 14, air inlet 15, gas phase mouth 16, paddle components 21, the first blade 211, the second blade 212, third blade
213。
Specific implementation mode
The present invention is described in detail for each embodiment shown in below in conjunction with the accompanying drawings, but it should explanation, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to function, method made by these embodiments,
Or the equivalent transformation in structure or replacement, all belong to the scope of protection of the present invention within.
As shown in Figure 1, the present invention provides a kind of venturi injection circulation esterifier, it can be used for ester plasticizer
Industrialized production.Wherein, ester plasticizer is preferably trioctyl trimellitate (TOTM).In addition, ester plasticizer can also be adjacent benzene two
Formic acid dioctyl ester, dibutyl phthalate, diisononyl phthalate, dioctyl terephthalate, tri trimellitate are just
Pungent positive last of the ten Heavenly stems ester etc..
Specifically, the venturi injection circulation esterifier includes：Reactor shell 1, stirring system 2, heating system
System 3, venturi type injection circulation system and alcohol reflux system.
1 inside of the reactor shell forms the reaction compartment of the venturi injection circulation esterifier, described anti-
The upper end of device cylinder 1 is answered to be sealed by upper cover, the lower end of the reactor shell is sealed by low head.Meanwhile the upper cover
On be provided with the feed inlet 8 being connected with the reaction compartment, be provided on the low head and be connected with the reaction compartment
Discharge port 9.Preferably, the feed inlet 8 is oppositely arranged with the discharge port 9.
In one embodiment, the reactor shell 1 uses the structure design of interlayer, at this point, the reactor cylinder
Body 1 includes shell and the inner casing in the shell, and chuck layer is formed between the shell and inner casing.In addition, in order to tie up
It holds the temperature environment inside reaction compartment to keep constant, further includes having heat-preservation cotton in the circumferential lateral surface of the shell.
In addition, being additionally provided in the interior sidewall surface of the inner casing from wall type baffle 7 and spiral guider 10.Preferably,
It is described to be arranged alternately successively from wall type baffle 7 and spiral guider 10.By be arranged it is described from wall type baffle 7 with spirally lead
To device 10 so that be effectively formed the cycle of slurry, material mixed effect is promoted significantly to reinforce, completely the equal energy of esterification yield after esterification
Up to 99% or more.
It is additionally provided with drain 13 on the upper cover, sample tap 14 and air inlet 15 are additionally provided on the low head.
Wherein, the drain 13 and air inlet 15 are used to adjust the air pressure in reaction compartment.The sample tap 14 is reacted for extracting
The sample of reactant in space, in order to be detected analysis.
The heating system 3 is for heating the reactant in reaction compartment, so that reactant can adapt to
Temperature condition under fully reacted.The heating system 3 includes：Heating tube, the heating tube is from the reactor shell 1
Top extend to lower part, the coiled pipe that the heating tube is arranged by straight tube and in a spiral form forms.
In one embodiment, in the heating system 3, adjacent straight tube is connected by coiled pipe, by straight tube and with
The heating tube of the coiled pipe composition of spiral form arrangement around the reactor shell 1 central axis from the reactor shell 1
Top extend to lower part.So set, improving heat transfer efficiency, wanting for industrialized production trioctyl trimellitate (TOTM) is met
It asks.
The stirring system 2 is for being stirred the reactant in reaction compartment, in order to be filled between reactant
The reaction divided.The stirring system 2 includes：Agitating shaft and at least three paddle components 21 being fixed on the agitating shaft,
At least three paddle components 21 are alternatively arranged from top to bottom.Preferably, the quantity of the paddle components 21 is three.In addition, institute
It further includes motor to state stirring system 2, and the electric machine external is and upper with the agitating shaft in the top of the reactor shell 1
End is sequentially connected.
As shown in Fig. 2, any paddle components 21 include：First blade 211, the second blade 212 and third blade 213,
First blade 211, the second blade 212 and third blade 213 are disposed adjacent from top to bottom, first blade 211,
Two blades 212 and third blade 213 are respectively provided with respective angle of inclination.
In one embodiment, first blade 211 of any paddle components 21 includes the first fixed plate, Yi Jiwei
Tilt blade and the other end in the first of first fixed plate one end second tilts blade, and described first tilts blade and institute
The second inclination blade is stated axisymmetricly to be arranged.Second blade 212 of any paddle components 21 include the second fixed plate and
Third positioned at second fixed plate one end tilts the 4th of blade and the other end and tilts blade, the third tilt blade with
The 4th inclination blade is axisymmetricly arranged.The third blade 213 of any paddle components 21 include third fixed plate, with
And positioned at the first level blade of third fixed plate one end and the second horizontal blade of the other end, the first level blade
Axisymmetricly it is arranged with the described second horizontal blade.
In the above embodiment, it is preferable that it is described first tilt blade and second tilt blade angle of inclination 10 °~
Between 30 °；The third tilts blade and the 4th and tilts the angle of inclination of blade between 70 °~90 °.In addition, described first
It is both provided with gasket between blade 211 and the second blade 212 and between the second blade 212 and third blade 213.To stir
It mixes system 2 and uses three layers of blade group device, promote to stir evenly, and can accordingly shorten mixing time.
The venturi type sprays circulation system being sufficiently mixed for realizing reactant, to improve connecing between reactant
Contacting surface is accumulated.The venturi type sprays circulation system：Venturi nozzle 4, First Heat Exchanger 5 and circulating pump 6.
Wherein, the Venturi nozzle 4 is set on the upper cover, and one end stretches in the reaction compartment, institute
The other end for stating Venturi nozzle 4 is connected through pipeline with one end of the First Heat Exchanger 5, the First Heat Exchanger 5 it is another
One end is connected through pipeline with one end of the circulating pump 6, and the other end of the circulating pump 6 is connected through pipeline with the low head
It connects.
When venturi type injection circulation system work, by the inclined acid anhydride of primary raw material for producing trioctyl trimellitate (TOTM), pungent
Alcohol and the agitated mixing of catalyst are pumped into venturi type after being heated to 150~180 DEG C through circulating pump 6 under inert gas protection
Circulation system is sprayed, control injection 40~80m/s of flow velocity makes Venturi nozzle 4 nearby generate partial drop of pressure, circular response material
It is sufficiently mixed through injection, contact area is improved.Reaction mass through circulating pump 6 beat be recycled into First Heat Exchanger 5 exchange heat after,
It is recycled to Venturi nozzle and carries out injection circulation.Inventory into circulation system and the inventory ratio after venturi sprays
For recycle ratio, recycle ratio is (2.5~3.3)：1.It is continuously heating to 200~230 DEG C of reaction temperature, completely after esterification, detection is full
Subsequent technique can be transferred to after sufficient product requirement.
The alcohol reflux system for realizing alcohol in reactant and water separation, and by the alcohol reflux after purification to reacting empty
Between in recycled.The alcohol reflux system includes：Gas phase mouth 16, the second heat exchanger 11 and alcohol-water separation device 12.
Wherein, the gas phase mouth 16 is set on the upper cover, and the gas phase mouth 16 exchanges heat through pipeline and described second
One end of device 11 is connected, and the other end of second heat exchanger 11 is connected through pipeline with one end of the alcohol-water separation device 12
It connects, the other end of the alcohol-water separation device 12 is connected through pipeline with the other end of the Venturi nozzle 4.In addition, the alcohol
The lower end of separator 12 is additionally provided with discharge outlet 121.
The course of work for spraying the venturi of the present invention circulation esterifier with reference to several embodiments is lifted
Example explanation.
Embodiment 1
By the inclined acid anhydride of primary raw material for producing trioctyl trimellitate (TOTM), octanol and the agitated mixing of catalyst, in inert gas
Venturi type is pumped into through circulating pump spray circulation system under protection, after being heated to 150~180 DEG C, flow velocity 40m/s is sprayed in control,
Reaction mass is recycled to Venturi nozzle and carries out injection circulation, recycle at this time after circulating pump is beaten and is recycled into heat exchanger heat exchange
Than being 3.3.It is continuously heating to 200~230 DEG C of reaction temperature, after being esterified a period of time, after tested, esterification yield 99.47%.
Embodiment 2
By the inclined acid anhydride of primary raw material for producing trioctyl trimellitate (TOTM), octanol and the agitated mixing of catalyst, in inert gas
Venturi type is pumped into through circulating pump spray circulation system under protection, after being heated to 150~180 DEG C, flow velocity 60m/s is sprayed in control,
Reaction mass is recycled to Venturi nozzle and carries out injection circulation, recycle at this time after circulating pump is beaten and is recycled into heat exchanger heat exchange
Than being 2.9.It is continuously heating to 200~230 DEG C of reaction temperature, after being esterified a period of time, after tested, esterification yield 99.82%.
Embodiment 3
By the inclined acid anhydride of primary raw material for producing trioctyl trimellitate (TOTM), octanol and the agitated mixing of catalyst, in inert gas
Venturi type is pumped into through circulating pump spray circulation system under protection, after being preheating to 150~180 DEG C, flow velocity 80m/s is sprayed in control,
Reaction mass is recycled to Venturi nozzle and carries out injection circulation, recycle at this time after circulating pump is beaten and is recycled into heat exchanger heat exchange
Than being 2.5.It is continuously heating to 200~230 DEG C of reaction temperature, after being esterified a period of time, after tested, esterification yield 99.13%.
As can be seen from the above-described embodiment, this technique compared with prior art, improves heat transfer efficiency, energy consumption can be greatly reduced
With equipment investment expense, material mixed effect is significantly reinforced, and esterification yield can be up to 99% or more after esterification completely, product quality
It is good, production cost is saved, is conducive to improve yield, meets the requirement of green chemical industry and sustainable development.
In conclusion the present invention is carried out at the same time the mixing of slurry by Venturi nozzle in sucking slurry, effectively improve
Mixed effect, stirring system use three layers of blade group device, promote to stir evenly, and can accordingly shorten mixing time, simultaneously
It is equipped with spiral guider in reactor shell inner wall, the cycle of slurry is effectively formed, material mixed effect is promoted significantly to add
By force, esterification yield can be up to 99% or more completely after esterification, and heating tube also is improved to be made of straight tube and coiled pipe by the present invention, improves
Heat transfer efficiency, meets the requirement of industrialized production ester plasticizer.The equipment of the present invention improves the life of ester plasticizer
Efficiency is produced, production cost is greatly lowered and saves energy consumption, to improve the ester plasticizer competitiveness of product in market.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (10)
1. a kind of venturi sprays circulation esterifier, it is used for the industrialized production of ester plasticizer, which is characterized in that institute
Stating venturi injection circulation esterifier includes：Reactor shell, heating system, stirring system, venturi type spray circulation
System and alcohol reflux system；
The reaction compartment of the venturi injection circulation esterifier, the reactor cylinder are formed inside the reactor shell
The upper end of body is sealed by upper cover, and the lower end of the reactor shell is sealed by low head, is provided on the upper cover and institute
The feed inlet that reaction compartment is connected is stated, the discharge port being connected with the reaction compartment is provided on the low head；
The heating system includes：Heating tube, the heating tube extends to lower part from the top of the reactor shell, described to add
The coiled pipe that heat pipe is arranged by straight tube and in a spiral form forms；
The stirring system includes：Agitating shaft and at least three paddle components being fixed on the agitating shaft, at least three
Paddle components are alternatively arranged from top to bottom, and any paddle components include：First blade, the second blade and third blade, it is described
First blade, the second blade and third blade are disposed adjacent from top to bottom, first blade, the second blade and third leaf
Piece is respectively provided with respective angle of inclination；
The venturi type sprays circulation system：Venturi nozzle, circulating pump and First Heat Exchanger, the venturi spray
Mouth is set on the upper cover, and one end stretches in the reaction compartment, and the other end of the Venturi nozzle is through pipeline
It is connected with one end of the First Heat Exchanger, one end phase of the other end through pipeline with the circulating pump of the First Heat Exchanger
Connection, the other end of the circulating pump are connected through pipeline with the low head；
The alcohol reflux system includes：Gas phase mouth, the second heat exchanger and alcohol-water separation device, the gas phase mouth are set on described
On end socket, the gas phase mouth is connected through pipeline with one end of second heat exchanger, the other end warp of second heat exchanger
Pipeline is connected with one end of the alcohol-water separation device, and the other end of the alcohol-water separation device is through pipeline and the Venturi nozzle
The other end be connected.
2. venturi according to claim 1 sprays circulation esterifier, which is characterized in that the reactor shell packet
Shell and the inner casing in the shell are included, chuck layer is formed between the shell and inner casing.
3. venturi according to claim 2 sprays circulation esterifier, which is characterized in that the peripheral side of the shell
Further include having heat-preservation cotton on face.
4. venturi according to claim 2 sprays circulation esterifier, which is characterized in that the madial wall of the inner casing
It is additionally provided on face from wall type baffle and spiral guider, it is described alternately to be set successively from wall type baffle and spiral guider
It sets.
5. venturi according to claim 1 sprays circulation esterifier, which is characterized in that also set on the upper cover
It is equipped with drain, sample tap and air inlet are additionally provided on the low head.
6. venturi according to claim 1 sprays circulation esterifier, which is characterized in that the stirring system also wraps
Motor is included, the electric machine external is sequentially connected in the top of the reactor shell, and with the upper end of the agitating shaft.
7. venturi according to claim 1 sprays circulation esterifier, which is characterized in that in the heating system,
Adjacent straight tube is connected by coiled pipe, and the heating tube that the coiled pipe arranged by straight tube and in a spiral form forms surrounds the reaction
The central axis of device cylinder extends to lower part from the top of the reactor shell.
8. venturi according to claim 1 sprays circulation esterifier, which is characterized in that first blade includes
First fixed plate and the second inclination blade for tilting blade and the other end positioned at the first of first fixed plate one end, institute
The first inclination blade is stated with the second inclination blade to be axisymmetricly arranged；Second blade include the second fixed plate and
Third positioned at second fixed plate one end tilts the 4th of blade and the other end and tilts blade, the third tilt blade with
The 4th inclination blade is axisymmetricly arranged；The third blade includes third fixed plate and is fixed positioned at the third
The first level blade of plate one end and the second horizontal blade of the other end, the first level blade and the described second horizontal blade
Axisymmetricly it is arranged.
9. venturi according to claim 8 sprays circulation esterifier, which is characterized in that described first tilts blade
And second tilt blade angle of inclination between 10 °~30 °；The third tilts blade and the 4th and tilts the inclination angle of blade
Degree is between 70 °~90 °.
10. venturi according to claim 8 sprays circulation esterifier, which is characterized in that first blade with
It is both provided with gasket between second blade and between the second blade and third blade.
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| CN111113677A (en) * | 2020-01-04 | 2020-05-08 | 陈必祥 | High-precision quantitative reaction system for A material and B material for concrete preparation |
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Application publication date: 20180921 |