CN2508851Y - Alkylation reactor - Google Patents
Alkylation reactor Download PDFInfo
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- CN2508851Y CN2508851Y CN 01254679 CN01254679U CN2508851Y CN 2508851 Y CN2508851 Y CN 2508851Y CN 01254679 CN01254679 CN 01254679 CN 01254679 U CN01254679 U CN 01254679U CN 2508851 Y CN2508851 Y CN 2508851Y
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- reactor
- mixing tube
- alkylation reactor
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Abstract
The utility model relates to an alkylation reactor, which mainly resolves the problems that the structure of equipment is relatively complex and the operation is relatively troublesome which exist in the prior literature. In the utility model, a mixing pipe is arranged in the alkylation reactor. A muzzle which is arranged in the mixing pipe extends into the alkylation reactor. The upper position of the lower end of the muzzle is provided with an air hatch. Through the technical scheme, the problems are preferably resolved. The utility model can be widely used in the alkylation reactions of phenylamine products.
Description
Technical field
The utility model relates to a kind of alkylation reactor, particularly about a kind of aniline and alkylating reactor of derivative thereof of being used for.
Background technology
Aniline or the alkylation of phenyl amines product can make a series of products.As: aniline and ethylene reaction system 2,6-diethylaniline (DEA), ortho-aminotoluene and ethylene reaction system 2-methyl, 6-MEA (MEA), aniline and propylene reaction system 2,6-diisopropyl aniline (DIPA), ortho-aminotoluene and propylene reaction system 2-methyl, 6-isopropyl aniline (MIPA), ortho-aminotoluene and isobutene reaction system 2-methyl, 6-tert-butyl group aniline (MTBA) etc.
The said goods is the important intermediate of synthetic herbicide-alachlor, Acetochlor, butachlor, also can be used to make pesticide and plant growth regulator.It simultaneously also is the intermediate of medicine and dye industry.The anti-coagulants, the rubber antiozonant that can be used as gasoline in addition are crosslinking agent, chain extender of polyurethane, epoxy resin etc. with the condensed products of formaldehyde.
Main aluminum halide, alkyl aluminium halide, the anilid aluminium etc. of adopting of aniline alkylating reaction are as catalyst, are that 300～350 ℃, pressure are to carry out under the condition of 3.9～7.0MPa in temperature.Because the aniline alkylating reaction is a kind of reaction of gas-liquid two-phase.Except factors such as catalyst, temperature, pressure, the quality of gas-liquid two-phase contact also is one of key factor that influences reaction speed.The reaction of stirred tank reactor mainly concentrates on the liquid level of reactor, needs constantly to upgrade the touch opportunity that liquid level increases gas-liquid two-phase, to reach the purpose of fast reaction speed by the stirring arm agitated liquid.Along with the increase of reactor, the intensity of stirring and effect are also progressively descending.Secondly leak for preventing, reactor adopts magnetic stirring apparatus, its internal structure more complicated, and maintenance capacity is big.Be subjected to the restriction of stirred tank structure in addition, the profile of stirred tank is generally all shorter more and stout, and for pressure vessel, the wall thickness of same pressure rating is pyknic much thicker than leptosomatic, when reactor do will be after big because wall thickness is too thick the not very economical that seems.
In " 2-methyl-6-MEA process units technological design " article of 1999 the 3rd phases of " Liaoning chemical industry " magazine, mention, have and mention aerosol dispersion liquid phase gas phase contact reactor in a kind of new technology, overcome above shortcoming, its process characteristic is through injector with liquid, with tiny vaporific being distributed in the gas phase, thereby increased the area of vapour-liquid contact widely, reaction is under the very favourable dynamic conditions.So reaction speed is fast, with short production cycle, equipment capacity is big, and stirs because of not having, and system is safe and reliable to operation.But the structure of this process equipment is complicated, and operation is trouble.
Summary of the invention
Technical problem to be solved in the utility model is that to overcome the device structure that exists in the above-mentioned document complicated, and operation is the shortcoming of trouble, and a kind of new alkylation reactor is provided.This reactor has simple in structure, and is easy to operate, and when being used for the phenyl amines alkylated reaction, the gas-liquid contact is effective, the characteristics that production efficiency is high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows: a kind of alkylation reactor, comprise housing, charging aperture, discharging opening and heat transmission equipment, charging aperture is on reactor top, and discharging opening is at reactor lower part, and heat transmission equipment is positioned at the housing bottom, one mixing tube is arranged above the heat transmission equipment, one nozzle gos deep into the mixing tube upper end, and on mixing tube top, the position has a gas port on the nozzle lower extreme point.
In the technique scheme, the heat transmission equipment preferred version is the chuck coil pipe, mixing tube be set to axial setting, and be the venturi tubular construction.
In the utility model,, have nozzle in the mixing tube again and have a gas port, and the nozzle lower extreme point is positioned under the gas port owing to be provided with a mixing tube in the alkylation reactor.When nozzle in mixing tube during the jetting fluid phase materials, can in mixing tube, form negative pressure automatically, gaseous phase materials is sucked in the mixing tube continuously automatically, thereby strengthened gas-liquid contact effect, reach fast reaction speed, the purpose of enhancing productivity is provided with outer circulation outside reactor, to make gas-liquid mixed contact effect more, obtain better technical effect.
Description of drawings
Fig. 1 is a reactor sketch of the present utility model.
Among Fig. 1,1 is reactor, and 2 is the import of liquid phase material, and 3 is nozzle, and 4 is the blender mixing tube, and 5 is the chuck coil pipe, and 6 is the import of gas phase material, and 7 is the import of blender mixing tube gas phase, and 8 is the product discharging opening, and 9 is pump.
Alkylation reactor is as follows for the operation of phenyl amines product olefin alkylation among Fig. 1:
Earlier benzene feedstock amine product and catalyst are packed in the reactor 1, by a circulating pump 9 liquid in the reactor is taken out Go out, return again reactor and form circulation. When temperature of charge is raised to the temperature of reacting required, inject high pressure alkene, vapour-liquid two Hybrid concurrency is given birth to reaction fully in vapor-liquid mixer, until reaction end. The heat that reaction produces is pressed from both sides by reactor Heat medium oil in cover and the coil pipe 5 is taken out of.
Reactor of the present invention 1 is interior to arrange a vapor-liquid mixer, and this blender is to make according to the principle of injector. Tool The liquid that certain pressure arranged from 3 li at the nozzle of blender with the high-speed jet ejection, because high-speed jet has sticking to ambient gas Stagnate and entrainment effect, the alkene around the blender just is sucked in the blender continuously. The vapour-liquid two-phase is mixed at blender Manage in 4 narrow spaces and contacted fully, reaction is under the very favourable dynamic conditions. Portion gas and liquid Body reacts in blender, flows back to together then in the liquid, and back liquid constantly replenishes under the effect of circulating pump and enters Blender, cycle-index per hour reach for several times or tens times. Fluid product concentration increases gradually, until reaction finishes.
Because the speed of this reaction depends on the size of internal circulating load, reactor does not need agitating device, and structure of reactor is letter greatly Change, system is safe and reliable to operation. Reactor can be designed to a similar container. And the shape of reactor also can be designed to thin Elongated, this is both economical for pressure vessel.
In reactor more heat exchange coil 5 can be set in addition, this has not only shortened the time of heating and cooling, and can The amount of heat that produces when in time withdrawing from fast reaction is given security for improving reaction speed.
The operating condition of circulating pump 9 is: operating temperature is 300～350 ℃, and operating pressure is 4.5～6.0MPa, and lift is 30～50 meters, and per hour flow is 5～15 times (promptly per hour the cycle-index of liquid is 5～15 times) of every batch reaction amount.
Use alkylation reactor of the present utility model, obviously fast reaction speed.And can simplify structure of reactor, be convenient to make and operation.Can also increase heat exchange area, shorten reaction time, enhance productivity.Process units and other similar vapour-liquid phase reaction process units that can be used for large-scale aniline alkylating.
Below by embodiment the utility model is further elaborated.
The specific embodiment [embodiment 1]
Produce 2 with reactor of the present utility model, 6-diethylaniline (DEA).Reactor diameter is 1200 millimeters of φ, and the straight barrel height is 5000 millimeters, and wall thickness is 46 millimeters, 30 meters of heat exchange areas
2Total volume is 6.6 meters
3, can produce 4000 kilograms of product for every batch.Design temperature is 325 ℃, and design pressure is 6.5MPa, and liquid circulation amount is 50 meters
3/ hour, pressure reduction is greater than 0.2MPa before and after the blender.Practical operation result: heated up 3 hours, reacted 6 hours, lowered the temperature 3 hours.[comparative example 1]
With 5 meters
3Stirred autoclave produces 2, the 6-diethylaniline.1700 millimeters of reactor diameter φ, straight barrel height are 2500 millimeters, and wall thickness is 42 millimeters, 15 meters of heat exchange areas
2, can produce 4000 kilograms of product for every batch.Design temperature is 325 ℃, and design pressure is 4.5MPa, and the stirring arm rotating speed is 105 rev/mins.Practical operation result: heated up 5 hours, reacted 12 hours, lowered the temperature 6 hours.
Claims (3)
1, a kind of alkylation reactor, comprise housing, charging aperture, discharging opening and heat transmission equipment, charging aperture is on reactor top, discharging opening is at reactor lower part, and heat transmission equipment is positioned at the housing bottom, it is characterized in that in reactor, one mixing tube is arranged above the heat transmission equipment, one nozzle gos deep into the mixing tube upper end, and on mixing tube top, the position has a gas port on the nozzle lower extreme point.
2,, it is characterized in that heat transmission equipment is the chuck coil pipe according to the described alkylation reactor of claim 1.
3,, it is characterized in that mixing tube axially is provided with, and be the venturi tubular construction according to the described alkylation reactor of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254679 CN2508851Y (en) | 2001-11-14 | 2001-11-14 | Alkylation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254679 CN2508851Y (en) | 2001-11-14 | 2001-11-14 | Alkylation reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2508851Y true CN2508851Y (en) | 2002-09-04 |
Family
ID=33663947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254679 Expired - Lifetime CN2508851Y (en) | 2001-11-14 | 2001-11-14 | Alkylation reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2508851Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587926B (en) * | 2013-10-31 | 2017-08-22 | 中国石油化工股份有限公司 | A kind of microfilament contact reactor and a kind of alkylation reaction method |
-
2001
- 2001-11-14 CN CN 01254679 patent/CN2508851Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587926B (en) * | 2013-10-31 | 2017-08-22 | 中国石油化工股份有限公司 | A kind of microfilament contact reactor and a kind of alkylation reaction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111114 Granted publication date: 20020904 |