CN207042485U - Dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor - Google Patents
Dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor Download PDFInfo
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- CN207042485U CN207042485U CN201720971290.3U CN201720971290U CN207042485U CN 207042485 U CN207042485 U CN 207042485U CN 201720971290 U CN201720971290 U CN 201720971290U CN 207042485 U CN207042485 U CN 207042485U
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Abstract
It the utility model is related to a kind of dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor, belong to organic peroxide oxidation unit technical field, including reactor, spiral tube exchanger, condenser, connecting line, reactor, spiral tube exchanger is connected with condenser by connecting line, described reactor is interconnected to form reactor group with flange, reactor group one end after connection is connected by reactor connecting tube and condenser connecting tube with condenser, the tube wall of the other end is built with air distributor, it is connected by air inlet pipe connected pipe flange with air inlet pipe connected pipe, the ratio between the diameter of described connecting line and the height of tubular reactor are 1：37.5, the distance between described reactor group is 4 times of reactor diameter, and the angle corresponding to the arc length of described reactor connecting tube and condenser connecting tube bent portion is 90 °.Concentration, security and the production efficiency of the oxidation reaction product of reactor of the present utility model are further enhanced.
Description
Technical field
The utility model belongs to organic peroxide oxidation unit technical field, and in particular to a kind of dimensionally-optimised isopropyl
Benzene hydrogen peroxide normal pressure tubular reactor.
Background technology
Air-oxidation reaction generation isopropyl benzene hydroperoxide（Abbreviation CHP), it is that cumene method production peroxidating is different
Propyl benzene（DCP first step reaction), and most important reaction.Existing cumene oxidation reaction is influenceed very big by pH value.If
Acidity is big in reaction system, that is, pH value is low, then very unfavorable to oxidation reaction.Because acidic materials can promote CHP to decompose, and
And the phenol product that acid decomposes further suppresses the progress reacted.So need pH value control in certain scope.Instead
It is mainly the formic acid and benzoic acid for aoxidizing side reaction generation to answer the acidic materials in system, and sometimes the carbon dioxide in air contains
Amount increases, or carries some acidic materials in charging isopropylbenzene, can also influence the content of reaction system middle acid substance.In isopropyl
In benzene oxidatoin production, in order to neutralize acidic materials, in oxidizing process, by intermittently or continuously manually adding into oxidizing tower
Add the aqueous solution or basic salt of the alkali of certain volume low-concentration（Such as sodium carbonate）The aqueous solution solve.Control be present in the processing step
System hysteresis, the alkali concn fluctuation into oxidative system is big, adds alkali regular poor, can not accurately control in oxidation reaction process and aoxidize
The problems such as pH value of liquid, at the same DCP condensation production technology use acidic catalyst, when oxidation solution in neutrality or meta-alkalescence, also can
Cause condensation reaction to slow, do not react even.
At present, equipment mainly has two kinds used by air-oxidation reaction generation isopropyl benzene hydroperoxide, one kind
It is the multi-tower type oxidation reactor that Helcles companies of the U.S. use.Another kind is the big volume that UOP uses
Slot type oxidation reactor.The acidic materials generated in oxidation reaction process all can not be excluded reactor in time by two kinds of reactors.
The accumulation of acidic materials reduces pH value, is suppressed the oxidation reaction of isopropylbenzene and air, thus the reactant generated is dense
Degree at most can only achieve 20% or so.Second, because CHP is unstable, thermally decomposed, at 80 DEG C, thermal decomposition is more serious, temperature
When degree raises again, thermal decomposition is more violent, in the case where upgrading system has acid, often therefore explodes, therefore,
Oxidation solution can not be concentrated with air-distillation, and the security of two kinds of devices needs further to be improved.3rd, above two reactor returns
It is mixed serious.In order to overcome above mentioned problem, number of patent application is 201720418084.X Chinese patent " isopropyl benzene hydroperoxide
Normal pressure tubular reactor " proposes a kind of technical scheme of isopropyl benzene hydroperoxide normal pressure tubular reactor, and the program includes reaction
Device, spiral tube exchanger, condenser, connecting line.Reactor, spiral tube exchanger and condenser are connected by connecting line,
Described reactor is interconnected to form reactor group with flange, and charging aperture is formed with the tube wall of left first reactor group of number,
Discharging opening is formed with the tube wall of right first reactor group of number, reactor group one end after connection passes through reactor connecting tube and cold
Condenser connecting tube is connected with condenser, and the tube wall of the other end is built with air distributor, by air inlet pipe connected pipe flange with entering
Tracheae connecting tube is connected, and air inlet pipe connected pipe is connected with air inlet pipe, and air inlet pipe is connected with air compressor machine, the top of described condenser
Equipped with reaction gas outlet, reactor is built with spiral tube exchanger.The isopropyl benzene hydroperoxide normal pressure pipe reaction of the patent
Device is simple in construction, cheap, easy to use, because equipment can exclude the sour gas that is generated in oxidation reaction process in real time
Body, course of reaction will not be suppressed, and the concentration of oxidation reaction product improves, therefore the production efficiency of equipment is high；It is continuous anti-
The crude product that should be sent out obtains alkaline hydrogen peroxide isopropylbenzene purity after concentrate, alkali cleaning can reach 95% or so；Due to can be with
The reaction temperature of oxidation reactor is precisely controlled by the heat exchanger and cooler of reactor, therefore the security of equipment significantly carries
It is high；Almost there is no air-teturning mixed phenomenon in reactor, therefore CHP purity is high, impurity is few.But the equipment does not have due to dimension scale
Optimize, the concentration and security of oxidation reaction product are affected, and then influence production efficiency.
The content of the invention
The purpose of this utility model is to provide a kind of dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor, improves
The concentration of oxidation reaction product, security is improved, improve production efficiency.
The purpose of this utility model is achieved through the following technical solutions：Dimensionally-optimised isopropyl benzene hydroperoxide normal pressure
Tubular reactor, including reactor, spiral tube exchanger, condenser, connecting line, reactor, spiral tube exchanger and condensation
Device is connected by connecting line, and described reactor is interconnected to form reactor group, left first reactor group of number with flange
Tube wall on be formed with charging aperture, be formed with discharging opening on the tube wall of right first reactor group of number, reactor group one end after connection
It is connected by reactor connecting tube and condenser connecting tube with condenser, the tube wall of the other end passes through built with air distributor
Air inlet pipe connected pipe flange is connected with air inlet pipe connected pipe, and air inlet pipe connected pipe is connected with air inlet pipe, and air inlet pipe connects with air compressor machine
Connect, the top of described condenser is equipped with reaction gas outlet, and reactor is built with spiral tube exchanger, it is characterised in that described
The ratio between the diameter of connecting line and the height of tubular reactor are 1：37.5, the distance between described reactor group is that reactor is straight
4 times of footpath, the angle corresponding to the arc length of described reactor connecting tube and condenser connecting tube bent portion are 90 °.
Further, it is characterised in that second reactor group pipe of tube wall and right number of described second reactor group of left number
Reaction mass delivery pipe is connected between wall, flowmeter is housed on described air inlet pipe connected pipe.
Further, it is characterised in that be equably formed with hole on described air distributor.
The utility model realizes following beneficial effect:
1. the concentration of oxidation reaction product can reach more than 40%, 100% is improved than existing equipment；
2. the security of equipment further improves；
3. the production efficiency of equipment further improves.
Brief description of the drawings
Fig. 1 is the schematic diagram of the dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor of the utility model.
Fig. 2 is the air distributor top view of the utility model isopropyl benzene hydroperoxide normal pressure tubular reactor.
In figure
1- air compressor machines, 2- flowmeters, 3- air distributors, 4- spiral tube exchangers, 5- condensers, 6- reactions
Device connecting tube, 7- air inlet pipe, 8- charging apertures, 9- discharging openings, 10- reaction mass delivery pipes, 11- reactors, 12- are anti-
Should gas outlet, 13- condenser connecting tubes, 14- air inlet pipe connected pipes, 15- air inlet pipe connected pipe flanges, 16- air point
Distribution.
Illustrate embodiment of the present utility model below in conjunction with the accompanying drawings.
Embodiment
The dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor ordered of the present utility model, including reactor 11, spiral shell
Coil heat exchanger 4, condenser 5, connecting line.Described reactor 11, spiral tube exchanger 4, condenser 5 pass through connecting line
Connection.Described reactor 11 is 5, is interconnected to form reactor group by flange, the reactor group one formed after connection
End is connected by flange with reactor connecting tube 6.The other end of reactor connecting tube 6 is connected by flange and condenser connecting tube 13
Connect.Condenser connecting tube 13 is connected with condenser 5, and the top of condenser 5 is equipped with reaction gas outlet 12, anti-for excluding oxidation
The sour gas that should be generated.The pipeline of the described reactor group other end is built with air distributor 3, on air distributor 3
Air dispensing orifice 16 is formed with evenly.The pipeline of the reactor group other end passes through air inlet pipe connected pipe flange 15 and air inlet pipe connected pipe
14 connections.Air inlet pipe connected pipe 14 is connected with air inlet pipe 7, and described air inlet pipe 7 is connected with air compressor machine 1.Air distributor 3 is one
Individual metallic plate, is made up of ferrous materials.Equably being formed with metallic plate can be by the hole of gas, and the hole made can be by pneumatics
The air that machine 1 inputs is evenly distributed in tubular reactor group.Built with spiral tube exchanger 4, helix tube changes reactor 11
Hot device 4 is connected with thermal source.Charging aperture 8 is formed with the tube wall of left first reactor group of number, described reactor group is 4.It is right
Discharging opening 9, the tube wall of left second reactor group of number and right second reaction of number are formed with the tube wall of first reactor group of number
Reaction mass delivery pipe 10 is connected between the tube wall of device group.Flowmeter 2 is housed, for surveying on described air inlet pipe connected pipe 14
Determine the air mass flow in air inlet pipe connected pipe 14.The ratio between the diameter of described connecting line and the height of tubular reactor are 1：
37.5, the distance between described reactor group is 4 times of the diameter of reactor 11.Described reactor connecting tube 6 connects with condenser
Angle corresponding to the arc length of the bent portion of pipe 13 is 90 degree.
Processing step during isopropyl benzene hydroperoxide normal pressure tubular reactor produced of the present utility model is：
Reaction mass is pumped into by reactor 11 by charging aperture 8 with feed pump；Air is pressed into the He of air inlet pipe 7 by air compressor machine 1
Air inlet pipe connected pipe 14, reactor 11 is entered after air distributor 3 evenly distributes air；In reactor 11, heat exchange is situated between
Matter is heated by spiral tube exchanger 4, and at 80 DEG C, reaction mass is sufficiently mixed temperature control with air, carries out oxygen at ambient pressure
Change reaction；The sour gas of oxidation reaction generation is discharged after the cooling of cooler 5 by reacting gas outlet；By multistage anti-
After answering, the reactant of generation is discharged from discharging opening 9, completes the generation of isopropyl benzene hydroperoxide.
Claims (3)
1. dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor, including reactor (11), spiral tube exchanger（4）,
Condenser（5）, connecting line, reactor (11), spiral tube exchanger（4）And condenser（5）Connected by connecting line, it is described
Reactor（11）Reactor group is interconnected to form with flange, charging aperture is formed with the tube wall of left first reactor group of number
（8）, discharging opening is formed with the tube wall of right first reactor group of number（9）, reactor group one end after connection is connected by reactor
Adapter（6）With condenser connecting tube（13）With condenser（5）Connection, the tube wall of the other end is built with air distributor（3）, pass through
Air inlet pipe connected pipe flange（15）With air inlet pipe connected pipe（14）Connection, air inlet pipe connected pipe（14）With air inlet pipe（7）Connection, enters
Tracheae（7）With air compressor machine（1）Connection, described condenser（5）Top reaction gas outlet is housed（12）, reactor（11）It is interior
Equipped with spiral tube exchanger（4）, it is characterised in that the ratio between the diameter of described connecting line and the height of tubular reactor are 1：
37.5, the distance between described reactor group is reactor（11）4 times of diameter, described reactor connecting tube（6）And condenser
Connecting tube（13）Angle corresponding to the arc length of bent portion is 90 °.
2. such as dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor described in claim 1, it is characterised in that institute
Reaction mass delivery pipe is connected between second reactor group tube wall of tube wall and right number of second reactor group of the left number said
（10）, described air inlet pipe connected pipe（14）It is upper that flowmeter is housed（2）.
3. such as dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor described in claim 1 or 2, it is characterised in that
Described air distributor（3）On be equably formed with hole（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720971290.3U CN207042485U (en) | 2017-08-05 | 2017-08-05 | Dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720971290.3U CN207042485U (en) | 2017-08-05 | 2017-08-05 | Dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor |
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| CN207042485U true CN207042485U (en) | 2018-02-27 |
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| CN201720971290.3U Active CN207042485U (en) | 2017-08-05 | 2017-08-05 | Dimensionally-optimised isopropyl benzene hydroperoxide normal pressure tubular reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022202128A1 (en) * | 2021-03-24 | 2022-09-29 | 住友化学株式会社 | Production equipment and production method for cumene hydroperoxide |
-
2017
- 2017-08-05 CN CN201720971290.3U patent/CN207042485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022202128A1 (en) * | 2021-03-24 | 2022-09-29 | 住友化学株式会社 | Production equipment and production method for cumene hydroperoxide |
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