CN101219365A - Actinic reactor - Google Patents

Abstract

The invention relates to a photochemical reactor, comprising a reactor body that is open at an upper part and a reactor cover matched with the opening of the reactor body. The reactor body and the reactor cover form a reaction chamber of the reactor. The reaction chamber is also provided with a stirring device, one or more built-in light source (s). With the built-in stirring device, the reaction materials have higher mass-transfer efficiency. Utilization rate of light energy is improved through the direct contact between the reaction materials and the built-in light source (s). Besides, the reactor can be easily amplified according to production scale with small floor occupancy.

Description

Actinic reactor

Technical field

The present invention relates to a kind of photochemical reaction still, relate in particular to a kind of photochemical reaction still of easy realization industrially scalable photochemical reaction, be specially adapted to the Fluorine containing olefine photooxidation reaction of industrially scalable.

Background technology

U.S. Pat 5143589 discloses and has a kind ofly obtained the method for fluorochemical polyether by Fluorine containing olefine reaction, and the first step that wherein relates to reaction be the photooxidation reaction of Fluorine containing olefine, and these reaction need carry out under the condition of aerating oxygen and ultraviolet radiation.For realizing this photooxidation reaction, the document provides a kind of small-sized glass reactor.Yet, being subjected to the restriction of reactor inner transmission matter condition and ultraviolet source transmission capacity, this reactor is only applicable to experimental rig, can't be used for suitability for industrialized production.

Photochemical reaction reactor commonly used also has shell and tube or coiled etc., and one or more light sources are set outside reactor.In order to strengthen the mixing of the material in the reactor, can reaction mass be circulated or make modes such as whole reactor vibration with pump.The shortcoming of these reactors is that floor space is big, and energy consumption is higher, and difficult in the amplification of course of industrialization.Especially for the situation of ultralow temperature or superhigh temperature reaction and gas-liquid two-phase participation reaction, be difficult to make reaction system to be under good insulation, mass transfer and the light radiation condition.Therefore, for the Fluorine containing olefine photooxidation reaction that need feed a large amount of gases and need to carry out under-100～-20 ℃ of ultralow temperature, existing actinic reactor is not suitable for realizes its suitability for industrialized production.

Summary of the invention

In view of the above-mentioned defective of prior art, the object of the present invention is to provide a kind of actinic reactor of easy realization commercial scale photochemical reaction, particularly a kind of actinic reactor that carries out industrially scalable Fluorine containing olefine photooxidation reaction that is applicable to.

For achieving the above object, the invention provides a kind of actinic reactor, this reacting appliance is useful on reactor kettle and the kettle cover that forms reative cell, and this reactor also comprises:

Be positioned at the agitating device of described reative cell;

Be positioned at one or more built-in light sources of described reative cell.

In a better embodiment, described agitating device is the mechanical agitator that is installed on the described kettle cover.

In another better embodiment, a plurality of described built-in light sources around the rotating shaft of described agitator be arranged in described agitator around.

In another better embodiment, the described kettle outside removably is equipped with chuck, can be by cooling medium to control material temperature in the described kettle between the described kettle outside and the described chuck.

Agitating device and built-in light source in reactor of the present invention uses, make it be integrated in reaction system inside, interior agitating device makes the mass-transfer efficiency height of reaction mass, built-in light source directly contacts the utilization rate that can improve luminous energy with reaction mass, also have, this reactor floor space is less, and is easy to amplify according to production scale.Therefore, compare, use reactor of the present invention can improve reactor list batch reaction volume greatly, cut down the consumption of energy, reduce the equipment land used, enhance productivity, be more suitable for suitability for industrialized production with existing actinic reactor.

Be described further below with reference to the technique effect of accompanying drawing, to understand the present invention fully design of the present invention, structure and generation.

Description of drawings

Fig. 1 is the front section view of the reactor of the specific embodiment of the invention;

Fig. 2 is the side sectional view of reactor shown in Figure 1, shows the various parts that are contained on the reactor kettle cover;

Fig. 3 is the vertical view of reactor kettle cover illustrated in figures 1 and 2, shows the specific embodiment that built-in light source is arranged.

The specific embodiment

Fig. 1～Fig. 3 is an embodiment of actinic reactor of the present invention.Now characteristics of the present invention and advantage are elaborated in conjunction with this embodiment.

Reactor 1 shown in Figure 1 comprises cylindric kettle 2 and the circular kettle cover 3 that is used to form reative cell, and reactor 1 also has built-in agitating device 4 and built-in light source 5.Described agitating device can be the mechanical agitator as arm stirrer and anchor agitator and so on.One end of agitating device 4 is rotatably mounted in kettle cover 3, and the other end stretches into reative cell downwards and is used for the hybrid reaction material.Built-in light source 5 is a fluorescent tube, and an end of described fluorescent tube removably is fixed in kettle cover 3, and the other end stretches into reative cell and is used for direct haptoreaction material.For the Fluorine containing olefine oxidation reaction, described fluorescent tube is a ultraviolet lamp tube.

Compare with existing actinic reactor, such structure concentrates on mass transfer function and light radiation function in the reative cell, makes mixing of materials abundant, and the utilization rate of light is higher, and is applicable to industrial-scale production.

As shown in Figure 3, agitating device 4 is installed on the center of kettle cover 3, and a plurality of fluorescent tubes 5 are that the center of circle is evenly arranged in around this agitating device with agitating device 4.The quantity of fluorescent tube 5 depends on factors such as reactor scale, fluorescent tube intensity of illumination, for mini-reactor, can be 1～2, usually, can be more than or equal to 3.

Fluorescent tube 5 also plays the effect of stirring plate washer except as the light source, can promote to mix, and above-mentioned arrangement mode can make reaction mass obtain better mixing and light radiation more fully.

The photooxidation reaction of Fluorine containing olefine needs to carry out under-100～-20 ℃ ultralow temperature, so course of reaction need be cooled off.As shown in Figure 1, the outside of kettle 2 is equipped with the chuck 6 that is used to cool off reaction mass.Different with the welding connecting mode of common response still chuck, chuck 6 removably closely is connected by bolt 7 with kettle 2.For the Fluorine containing olefine oxidation reaction, the gap of chuck 6 and kettle 2 can charge into the low-freezing cooling medium as alcohol, chloroform and so on.

Because kettle 2 removably is connected with chuck 6, after finishing reaction, can from chuck, take out kettle easily, help kettle inside is cleaned and drying.

For further improving film-cooled heat, strengthen cooling effect, as shown in Figure 3, reactor 1 also comprises built-in cooling device 8, this cooling device can coil pipe or shell and tube.

In order to finish the photooxidation reaction of described Fluorine containing olefine, measuring instruments such as liquid level gauge 9 and temperature measuring equipment 14 also are housed on the reactor kettle cover 3, and material pipes such as gas phase charge pipe 10, liquid phase charge pipe 11, blast pipe 12 and discharge nozzle 13.

Above-described reactor is a kind of embodiment of the present invention, in other embodiments, can do following change to above-mentioned technical characterictic:

Described agitating device can be the end agitator that is loaded at the bottom of the still, and described agitating device also can be a magnetic stirring apparatus.

Described built-in light source can enter in the reative cell from kettle.

Also have, though the reactor of design of the present invention and embodiment proposes at the photooxidation reaction of the Fluorine containing olefine of industrially scalable, but only need according to after specifically reaction condition is done suitably to adjust to reactor scale, light source type, heat transfer area, heat transfer medium etc., just applicable to the photochemical reaction of other liquid phase or gas-liquid phase, and can realize constructed effect.

In sum, those of ordinary skill is scrutable in the art, and described in this specification is preferred embodiment of the present invention, and all changes of being made under this invention's idea or modification all should be in claim protection domains of the present invention.

Claims (7)

1. actinic reactor comprises the kettle and a kettle cover that cooperates with the opening of described kettle of a upper opening, and described kettle and described kettle cover form the reative cell of described reactor, it is characterized in that,

Also be provided with agitating device in the described reative cell;

Also be provided with one or more built-in light sources in the described reative cell.

2. reactor as claimed in claim 1 is characterized in that, described agitating device comprises a rotating shaft and can be around the stirring vane of described rotating shaft rotation, and described rotating shaft is passed described kettle cover and is fixedly mounted on the described kettle cover.

3. reactor as claimed in claim 2 is characterized in that, described agitating device is mechanical agitator or magnetic stirring apparatus.

4. reactor as claimed in claim 1 is characterized in that described built-in light source is removably mounted on the described kettle cover.

5. as claim 2 or 3 described reactors, it is characterized in that a plurality of described built-in light sources are around the described rotating shaft setting of described agitator.

6. reactor as claimed in claim 5 is characterized in that, described built-in light source is the described rotating shaft setting that centers on described agitator equally spacedly.

7. reactor as claimed in claim 1 is characterized in that, the described kettle outside removably is equipped with chuck, can be by cooling medium to control material temperature in the described kettle between the described kettle outside and the described chuck.

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