JP5461243B2 - Chemical substance production method and reaction apparatus - Google Patents

Description

  The present invention relates to a chemical substance production method and reaction apparatus, and more particularly to a chemical substance production method and reaction apparatus using energy rays such as light.

  Conventionally, chemical reactions using light energy are well known, and various methods for producing chemical substances and reaction apparatuses using the chemical reactions have been proposed. For example, the manufacturing method of the microstructure described in Patent Document 1 includes a step of supplying a first liquid containing an energy ray-curable monomer and a polymerization initiator to the first flow path, and the first flow path. Supplying a second liquid to a second flow path formed to surround the first flow path, and the first liquid and the second flow path at a point where the first flow path and the second flow path merge. A step of bringing the second liquid into contact with the second liquid, and a step of irradiating the first liquid brought into contact with the second liquid with energy rays. Thus, a microstructure having a desired shape and small size variation can be formed with high yield and at a low cost.

  In addition, a photocatalyst-supporting microreactor described in Patent Document 2 includes a reactor having a fine reaction channel formed of a light-transmitting material, a photocatalyst-supporting film formed in the reaction channel, a light irradiation device, The concentration of the reaction substrate A, the specific surface area of the photocatalyst carrying film, and the photocatalyst carrying region of the reaction channel are before the target product D and the intermediate product C further react to produce a byproduct. Further, the relationship is set such that the reaction solution escapes from the photocatalyst carrying region. As a result, the reaction molecules in the reaction solution can be reacted efficiently, and the target product can be selectively obtained.

  Furthermore, the photocatalytic microreaction apparatus described in Patent Document 3 includes a microreactor having a microchannel formed of a light-transmitting material, and a photocatalyst layer provided on the inner surface of the microchannel. And when the reaction raw material has a low affinity for the photocatalyst, the reaction raw material flows along the inner surface of the microchannel, and is configured to be able to form a pipe flow in a state where the gas raw material flows through the central portion. Yes. Thereby, even if it is a raw material liquid with low affinity with respect to a photocatalyst, the existence rate in the photocatalyst surface can be effectively raised within a microchannel.

JP 2007-90306 A JP 2007-313426 A JP 2008-86993 A

  However, when a photoreaction is performed, it has been difficult to reliably apply uniform light energy to a chemical substance present in the liquid. For example, in the methods described in Patent Documents 1 to 3, energy is supplied to the chemical substance in the vicinity of the wall surface of the microreactor and the chemical substance is activated, but until the chemical substance is molecularly diffused in the actual reaction field. The energy given in between is dissipated and there is a problem that the efficiency of the chemical reaction becomes worse.

  In view of such circumstances, the present invention is intended to provide a chemical production method and a reaction apparatus that increase the probability of encountering a reaction partner before the activated chemical substance loses its activity and increase the reaction efficiency.

  The problems of the present invention can be solved by the following inventions.

That is, in the reaction apparatus of the present invention, an energy ray source that radiates energy rays, a plurality of chemical substance supply paths for supplying chemical substances from the horizontal direction , and ends of the plurality of chemical substance supply paths are connected, A merging portion for merging the supplied chemical substances, a constricted portion for constricting a flow flowing in from the merging portion, one end portion of which is connected to the merging portion in a vertical direction; and the constricted flow And a discharge part connected to the other end of the part for discharging the flow flowing in from the contracted part to the outside, and transmitting the energy ray through at least a part of the chemical substance supply path The energy ray source is disposed such that the energy rays emitted from the energy ray source are irradiated to the chemical substance that passes through the transmission part and flows through the chemical substance supply path. Said contraction The cross-sectional area of the plane perpendicular to the flow direction in the contracted portion is smaller than the sectional area of the connecting portion side of the connecting portion of the contracted portion and the confluent portion, and the contracted portion The main feature is that it is smaller than the cross-sectional area on the discharge portion side of the connection portion of the discharge portion.

  Thereby, since the flow from the confluence | merging part is restrict | squeezed and a chemical substance passes through the narrow constriction part, the probability that the chemical substances excited by the energy beam meet each other can be increased. In other words, in the contraction part, the probability that the reacting chemical substances meet within a short time during which the activated state of the chemical substance is maintained can be increased, so that the photoreaction can be efficiently performed and the light It becomes possible to accelerate the reaction.

  The main feature of the reaction apparatus of the present invention is that the energy ray sources are provided in the number corresponding to the number of the chemical substance supply paths, and the energy ray sources are arranged for each chemical substance supply path.

  Thereby, reaction efficiency can be raised. Moreover, since the kind and intensity | strength of an energy beam can be changed for every chemical substance supply path, it also has the effect of a reaction yield increase.

  Furthermore, in the reaction apparatus of the present invention, the energy beam source is one, and the energy beam source is configured to irradiate the chemical substances in all the chemical substance supply paths with one energy beam source. Is the main feature. Thereby, an inexpensive apparatus can be manufactured without significantly reducing reaction efficiency and reaction yield.

  Furthermore, the reactor according to the present invention is characterized in that the junction unit also includes a transmission unit that transmits the energy beam, and an energy beam source for irradiating the chemical substance in the junction unit with the energy beam. It is said. As a result, the irradiation time can be kept long even in a state where the amount of energy that has flowed into the flow path is attenuated, and the structure of the energy beam supply unit is simplified, and the apparatus can be manufactured at low cost.

  Further, the reaction apparatus of the present invention has a mirror structure on the inner surface facing the transmission part in the chemical substance supply path, and the energy rays transmitted through the transmission part are reflected by the mirror structure, The main feature is that it has a structure in which the chemical substance in the chemical substance supply path is irradiated again.

  As a result, the energy rays pass through the transmission part, irradiate the chemical substance inside the chemical substance supply path, and after being reflected by the mirror structure, again irradiate the chemical substance, so that the chemical substance is efficiently excited. can do.

The method for producing a chemical substance according to the present invention includes a step of flowing a chemical substance in a plurality of flow paths in a horizontal direction, and irradiating the chemical substance with energy rays while the chemical substance is flowing in the flow path, A step of bringing a chemical substance into an excited state, a step of causing a chemical substance in an excited state flowing through the plurality of flow paths to merge at one merging portion and starting a chemical reaction, and a merged portion at the merging portion The chemical substance is flowed to the vertical contraction part in order to restrict the flow of the chemical substance, thereby promoting the chemical reaction and the chemical substance flowing in the contraction part to the outflow part for allowing the chemical substance to flow outside. The main feature is the provision of steps.

  As a result, the flow of the chemical substance from the merging part to the constricted part causes the flow to be narrowed and narrowed, so the probability that two kinds of chemical substances meet each other increases and the activated state is maintained. The reaction efficiency is improved because more chemical substances meet with the reaction partner.

  In addition, the chemical production method of the present invention is characterized mainly in that the residence time of the chemical substance at the junction is 1 second or less. Thereby, since the probability that the chemical substance in which the activated state is maintained will meet in the contracted portion increases, the reaction efficiency is further improved.

  According to the chemical substance production method and reaction apparatus of the present invention, the efficiency of photoreaction can be increased.

1 is a side view of a reaction apparatus according to a first embodiment of the present invention. It is a fragmentary sectional view of the reaction equipment concerning a 1st embodiment of the present invention. 1 is a plan view of a reaction apparatus according to a first embodiment of the present invention. It is a side view of the reaction apparatus which concerns on the 2nd Embodiment of this invention. It is a top view of the reaction device concerning a 2nd embodiment of the present invention. It is a side view of the reaction apparatus which concerns on the 3rd Embodiment of this invention. It is a top view of the reaction apparatus concerning a 3rd embodiment of the present invention. It is the reaction apparatus 200 concerning Example 1 of patent document 1. FIG.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. Here, in the drawing, portions indicated by the same symbols are similar elements having similar functions. In addition, in the present specification, when a numerical range is expressed using “˜”, upper and lower numerical values indicated by “˜” are also included in the numerical range.

<Reactor>
An embodiment of the reaction apparatus of the present invention will be described with reference to the drawings. FIG. 1A is a side view of the reaction apparatus according to the first embodiment of the present invention. FIG.1 (b) is a fragmentary sectional view of the reaction apparatus which concerns on the 1st Embodiment of this invention, and is IB-IB sectional drawing of FIG. FIG. 2 is a plan view of the reaction apparatus according to the first embodiment of the present invention.

  As shown in FIG. 1A, FIG. 1B, and FIG. 2, the reactor according to the first embodiment of the present invention includes an energy beam source 1 that irradiates an energy beam such as light, and a liquid chemical substance in the reactor. Alternatively, two chemical substance supply paths 2 for supplying a liquid (or liquid substance) containing a chemical substance, a merging section 3 for merging the chemical substances supplied from the chemical substance supply path 2, and a merging section 3 mainly includes a contraction section 4 for restricting the flow of the chemical substance flowing out from 3, and a discharge section 5 for discharging the chemical substance flowing out from the contraction section to the outside of the reaction apparatus. The chemical substance supply path 2, the merging section 3, the contracting section 4, and the discharging section 5 include a flow path 20, a flow path 22, a flow path 24, and a flow path 26, respectively. Further, the chemical substance supply path 2 includes a transmission unit 30 that transmits the energy rays irradiated from the energy ray source 1.

  Two energy ray sources 1 are arranged in the vicinity of each chemical substance supply path 2, one in total, and each energy ray source 1 radiates energy rays toward each chemical substance supply path 2. As the energy ray source 1, a radiation source that emits various electromagnetic waves, such as those that emit visible light, infrared rays, and ultraviolet rays, those that emit laser light, and those that emit microwaves, etc., are applicable. It can be selected according to the chemical reaction to be performed. As described above, by arranging the energy beam source 1 for each chemical substance supply path 2, the type and intensity of the energy beam irradiated for each chemical substance supply path 2 can be changed. Thereby, the minimum excited state required for reaction can be given by giving energy to a chemical substance.

  Here, a total of two energy ray sources 1 are arranged in the vicinity of each chemical substance supply path 2, but the number is not limited, and one energy ray source 1 is connected to all chemical substance supply paths 2. Or a plurality of energy ray sources may be arranged in each chemical substance supply path 2. When a plurality of energy ray sources 1 are arranged in each chemical substance supply path 2, a plurality of types and strengths of energy rays can be supplied to the chemical substance supply path 2. Thereby, a necessary minimum excitation state can be given by combining inexpensive and commercially available energy sources. With this energy beam, the chemical substance inside the chemical substance supply path 2 can be brought into an excited state.

  The two chemical substance supply paths 2 are respectively arranged such that the outlets through which the chemical substance flows out are opposed to each other with the junction part 3 interposed therebetween, and the chemical substance supplied from the outside of the present reaction apparatus flows into the junction part 3. Thereby, since the chemical substance which flowed out from the chemical substance supply path 2 collides from the front in the junction part 3, it becomes easy to meet chemical substances which react, and a chemical reaction can be promoted. However, the arrangement of the chemical substance supply path 2 is not limited to the opposite arrangement, that is, the arrangement in which the angle between the two chemical substance supply paths 2 is 180 °.

  The chemical substance supply path 2 has a transmission part 30 which is a part that transmits energy rays emitted from the energy ray source 1 at least in part, and is configured so that the internal chemical substance is irradiated with the energy rays. Has been. Moreover, the chemical substance supply path 2 can also be provided with a structure that reflects energy rays, such as a mirror structure, on the opposing surface of the transmission part 30. As a result, the energy rays pass through the transmission part 30, irradiate the chemical substance inside the chemical substance supply path 2, and after being reflected by the mirror structure, irradiate the chemical substance again, so that the chemical substance is efficiently excited. Can be in a state. Alternatively, the entire chemical substance supply path 2 may be formed of an energy ray transmitting material and irradiated with energy rays from all directions at 360 °.

  In this reaction apparatus, the chemical substance supply path 2 has two configurations. However, the present invention is not limited to this, and when applied to a chemical reaction in which a plurality of chemical substances react, for each chemical substance to be circulated, It is also possible to install one or a plurality of chemical substance supply paths 2.

  The merging unit 3 is connected to the end of each chemical substance supply path 2 and merges and mixes the chemical substances sent from each chemical substance supply path 2. Here, the merging portion 3 also has a transmission portion that is a portion that transmits the energy rays emitted from the energy ray source 1 in at least a part thereof, and is configured so that the internal chemical substance is irradiated with the energy rays. May be. Thereby, even an inexpensive, low-power energy source can generate an excited state necessary for the reaction by increasing the irradiation time.

  In addition, it is preferable to adjust the flow channel dimensions of the present reaction apparatus or the pump output for flowing the chemical substance so that the time of the chemical substance staying in the junction is 1 second or less. As a result, it is possible to prevent the chemical substance from being dissipated without reacting even when the chemical substance is in an excited state by turning the corner energy.

  One end of the contracted portion 4 is connected to the joining portion 3 and the other end is connected to the discharging portion 5. The contraction unit 4 causes the chemical substance supplied from the junction unit 3 to flow out to the discharge unit 5. The cross-sectional area of the flow path 24 in the contraction part 4 (the cross-sectional area of the surface perpendicular to the flow direction of the chemical substance) is the disconnection of the flow path 22 on the confluence part 3 side of the connection part of the constriction part 4 and the confluence part 3. It is smaller than the area (the cross-sectional area of the surface perpendicular to the flow direction of the chemical substance), and the cross-sectional area of the flow path 26 on the discharge part 5 side of the connecting part between the contraction part 4 and the discharge part 5 Smaller than the cross-sectional area of the vertical plane). In other words, at the connecting portion between the merging portion 3 and the converging portion 4, the equivalent circle diameter of the flow path on the confluence portion side is A, and the equivalent circular diameter of the flow passage on the constriction portion 4 side is B. When the equivalent circular diameter of the flow path on the discharge portion side of the connection portion between the flow portion 4 and the discharge portion 5 is C, A> B and C> B are satisfied. Thereby, since the flow from the confluence | merging part 3 is restrict | squeezed and the chemical substance passes through the flow path 24 of the narrow contraction part 4, the probability that the chemical substances excited by the energy rays meet each other can be increased. In other words, in the contraction part, the probability that the reacting chemical substances meet within a short time during which the activated state of the chemical substance is maintained can be increased, so that the photoreaction can be efficiently performed and the light It becomes possible to accelerate the reaction. In the present invention, “squeezing the flow” means that the liquid material flows from a large flow path to a small flow path as described above.

  The discharge unit 5 discharges the chemical substance flowing in from the contraction unit 4 to the outside of the apparatus.

  Here, the reaction apparatus according to the present invention includes a chemical substance to be reacted in the present reaction apparatus, a chemical substance generated by this reaction, a liquid substance for flowing the chemical substance to be reacted in the apparatus (a solvent for dissolving the chemical substance to be reacted) , A liquid inert to the chemical substance to be reacted, etc.) and a material having good processability can be used. Typical examples of such a substance include metals represented by titanium, stainless steel and the like, ceramics, and resins. Further, the chemical substance can be circulated in the apparatus by a pump (not shown).

  In addition, the energy ray irradiated from the energy ray source 1 is not only configured to irradiate the internal chemical substance through the transmission part 30 of the chemical substance supply path 2, but an energy ray transmission part is provided in the junction part 3, It is also possible to adopt a configuration in which energy rays are irradiated to the chemical substance inside the portion 3.

  A reaction apparatus according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a side view of the reaction apparatus according to the second embodiment of the present invention. FIG. 4 is a plan view of the reaction apparatus according to the second embodiment of the present invention.

  As shown in FIGS. 3 and 4, the reaction apparatus according to the second embodiment of the present invention is configured such that the reaction apparatus of the first embodiment is configured by two chemical substance supply paths 2. It is composed of four chemical substance supply paths 2 and one energy ray source 1 arranged in the vicinity of each chemical substance supply path 2, that is, a total of four energy ray sources 1. Except for this, the second embodiment is the same as the first embodiment. Description of the same parts as those in the first embodiment is omitted.

  The four chemical substance supply paths 2 are arranged on the same plane and are installed so as to have an angle of 90 ° with the adjacent chemical substance supply paths. Here, the arrangement is not limited to the angle of 90 °, and various arrangements can be applied. By increasing the opposing vectors of the supplied substances as much as possible, kinetic energy can be effectively applied to the mixing of chemical substances, and the efficiency of the reaction can be increased.

  In addition, the flow rate of the pump (not shown) for supplying the chemical substance to the present reactor, the chemical substance so that the average residence time of the chemical substance supplied to the merge part 3 is 1 second or less. It is preferable to adjust the diameters of the supply path 2, the merging portion 3, the contracted portion 4, and the discharge portion 5. Thereby, it is possible to prevent the chemical substance generated by the energy rays from losing reactivity due to energy dissipation.

  Since the reaction apparatus of the second embodiment has four chemical substance supply paths 2, even when there are four types of chemical substances to be reacted, the chemical substance supply paths 2 are allocated to each chemical substance. Can do. Further, even if there are two types of chemical substances to be reacted, one kind of chemical substance to be reacted is divided into two or three chemical substance supply paths 2 and supplied into the reaction apparatus, so that the subsequent reaction to the mixing unit By increasing the interfacial area, the reactants can be brought into contact with each other while maintaining the excited state, thereby speeding up the reaction.

  A reaction apparatus according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a side view of a reaction apparatus according to the third embodiment of the present invention. FIG. 6 is a plan view of a reaction apparatus according to the third embodiment of the present invention.

  As shown in FIGS. 5 and 6, the reaction apparatus according to the third embodiment of the present invention is configured such that the reaction apparatus of the second embodiment includes a total of four energy ray sources 1 for each chemical substance supply path 2. In contrast to this, it is composed of one energy ray source 6 having an energy ray emitting surface capable of irradiating energy rays simultaneously to all the chemical substance supply paths 2, and the other is the second one. This is the same as the embodiment. Description of the same parts as those of the second embodiment is omitted.

  Since the reaction apparatus of the third embodiment has one energy beam source 6 capable of simultaneously irradiating energy beams to all the chemical substance supply paths 2, the reaction apparatus can be made compact, and Energy can be supplied until just before chemical substances meet, and an inexpensive energy source can be used.

<Operation>
Next, the operation of the present invention will be described with reference to the apparatus according to the first embodiment. Referring to FIGS. 1 and 2, two kinds of chemical substances are separately supplied from two chemical substance supply paths 2 to the reaction apparatus. Supply is performed by a pump (not shown) or the like. The supplied chemical substance is irradiated with an energy beam by the energy beam source 1 through an energy beam transmission part (not shown) provided in the chemical substance supply channel 2 while passing through the chemical substance supply channel 2.

  When irradiated with energy rays, the chemical substance is activated and becomes an excited state. The two types of chemical substances in the excited state collide and mix at the junction. At this time, it is preferable that the time of the chemical substance staying in the junction is 1 second or less. By doing so, it is possible to cause the reaction at the next contracted portion within the time in which the activated state is maintained. A chemical reaction occurs when two kinds of excited chemical substances meet, but the flow of the chemical substance from the merging part 3 to the converging part 4 causes the flow to be narrowed and narrowed. The probability that two kinds of chemical substances meet each other increases, and the number of chemical substances that meet the reaction partner increases while the activated state is maintained, thereby improving the reaction efficiency. After passing through the contraction part, the chemical substance flows into the discharge part 5. The discharge part 5 has a larger equivalent circle diameter of the flow path than the contracted part. As a result, the reaction can be promoted by compressing the molecular diffusion distance in the contraction section, and the discharge section can increase the Re number by enlarging the flow path, thereby increasing the mixing effect. .

<Examples and Comparative Examples>
The results of experiments conducted as examples and comparative examples of the present invention will be described below.

Comparative example

  First, a comparative example will be described. As a comparative example, referring to Example 1 of Patent Document 1, a reactor was manufactured as close to Example 1 as possible, and an experiment was conducted.

  FIG. 7 shows a reaction apparatus 200 according to Example 1 of Patent Document 1. As shown in FIG. 7, the reaction apparatus 200 includes a first flow path 110, two second flow paths 120, and a junction of the first flow path 110 and the two second flow paths 120. It is configured to include a certain merge point 130, a merge flow path 140 connected to the tip of the merge point 130, an energy ray source 150, and a body 160.

  Hard glass was selected as the body 160, and the first flow path 110 was produced with an inner diameter of 0.42 mm by microdrilling. Next, the second flow path 120 merges at an angle of 60 ° with respect to the first flow path, the inner diameter of the second flow path 120 is 0.3 mm, and the flow path width after merging is 1.5 mm. Micro-drilling was performed as follows. Thereafter, the body 160 was covered (not shown) with sapphire glass.

In addition, a UV exposure device (manufactured by Ushio Inc., peak wavelength 365 nm) was used as the energy ray source 150, and the UV exposure device was installed so that ultraviolet light was irradiated from above the reaction apparatus main body. The illuminance of the direct light of the UV exposure device is 24.5 mW / cm ² , and the irradiance of the UV exposure device is set to 19 mW / cm ^{2 so} that the illuminance reaching the inside of the merge channel (thickness L: 0.3 mm) is 19 mW / cm ² . The position was adjusted. Further, the first flow path and the second flow path to the junction were covered with a light shielding tape. Furthermore, the downstream part was covered with a light-shielding tape so that the length of the irradiated part of the confluence channel was 40 mm.

  The following experiment was conducted using this reactor.

[First liquid adjustment]
To 6 g of 1,6-hexanediol diacrylate (trade name: HDDA, manufactured by New Frontier), 0.3 g of a photopolymerization initiator (trade name: Irgacure 1700, manufactured by Ciba Geigy) and 0.03 g of lipophilic dye VB2620 The mixture was added dropwise and mixed using a stirrer until uniform.

  Using the reaction apparatus prepared as described above, the above mixed solution is allowed to flow in the first flow path 110 (inner flow path), and a surfactant (sorbitan fatty acid ester, product) is flowed in the second flow path 120 (outer flow path). (Name: sorbitan monolaurate, manufactured by Nacalai Tesque) was flowed.

  Both the mixed solution and soybean oil were continuously flowed using a syringe pump. The flow rate of the mixed solution was 0.05 μl / second, the flow rate of soybean oil was 20 μl / second, and the flow rate ratio was 1: 400. The mixed solution and soybean oil were brought into contact at a junction 130 of the reactor main body.

  Ultraviolet light was irradiated to the mixed solution in contact with soybean oil to obtain a microstructure. The obtained microstructure was a spherical UV curable resin. In order to measure the size distribution, the particle size distribution was measured using a Horiba LA-950, and the average was 31 μm, and the size distribution was as broad as ± 18 μm.

  The size distribution varies widely because the fine structure is formed by irradiating ultraviolet rays after mixing, but the energy of UV light is not necessarily irradiated uniformly, so the curing rate is delayed, This is thought to be due to the occurrence of coalescence and the resulting size distribution to be pro-degree.

[Example 1]
As the reaction apparatus of the present invention, the reaction apparatus according to the third embodiment is selected, provided that the chemical substance supply path 2 is three for the first reaction liquid and three for the second reaction liquid, in total. Six installed ones were prepared and used.

The inner diameters of the three chemical substance supply paths 2 serving as the first reaction liquid flow paths are 1.0 mm, and the inner diameter of the three chemical substance supply paths 2 serving as the second reaction liquid flow paths is 0.1 mm. The inner diameter of the merging portion 3 was 8 mm, the inner diameter of the merging portion 3 was 1.5 mm, and the depth was 2 mm, the inner diameter of the contracted portion 4 was 1 mm, and the inner diameter of the discharge portion 5 was 2 mm. A UV exposure device is used as the energy ray source 1, and the illuminance of direct light of the UV exposure device is 24.5 mW / cm ² , and the illuminance reaching the inside of the chemical substance supply path 2 (thickness L: 0.3 mm) Is installed with the light source position adjusted to 19 mW / cm ² , each flow rate described in the comparative example is equally divided into three, and the same chemical substance as in the comparative example is supplied from each inlet to perform the reaction. It was.

  When the obtained sample was evaluated by the same evaluation method as in the comparative example, the obtained microstructure was a spherical UV curable resin. Since there is no method for simply analyzing the surface state of the microstructure thus obtained, the first liquid of the present invention and soybean oil dispersed using the zeta potential measurement method, the first liquid 1,6 hexanediol diacrylate, and the one dispersed without the photopolymerization initiator were compared and evaluated without UV irradiation. These three were clearly different in terms of surface modification. It was estimated that the acrylate was UV cured on the particle surface and converted into a resin. Further, in order to measure the size distribution of the particles obtained in the present invention, the particle size distribution was measured using a Horiba LA-950. The average particle size distribution was 15.3 μm, and the size distribution was ± 5.1 μm. It was.

  Thus, in the method of the comparative example, since the contraction part 4 is not provided, the probability that a chemical substance meets is low, and the reactivity is deteriorated. For this reason, the particle size distribution varies. On the other hand, in the present invention, since the contracted portion 4 is provided, the probability that excited chemical substances meet each other is increased, and the reactivity is improved. As a result, the particle size distribution did not vary and became monodisperse.

  DESCRIPTION OF SYMBOLS 1 ... Energy ray source, 2 ... Chemical substance supply path, 3 ... Merge part, 4 ... Condensation part, 5 ... Discharge part, 6 ... Energy ray source, 110 ... Flow path, 120 ... Flow path, 130 ... Merge point, 140 ... Merging channel, 150 ... Energy ray source, 160 ... Body, 200 ... Reaction apparatus

Claims (7)

A reactor for causing a chemical reaction,
An energy ray source that emits energy rays;
A plurality of chemical substance supply paths for supplying chemical substances from the horizontal direction ;
The end of the plurality of chemical substance supply paths are connected, and a merging unit for merging the supplied chemical substances,
One end portion is connected to the merging portion in the vertical direction, and a constricted portion for constricting the flow flowing in from the merging portion;
A discharge portion connected to the other end of the contracted flow portion, for discharging the flow flowing in from the contracted flow portion to the outside;
With
Having a transmission part that transmits the energy rays in at least a part of the chemical substance supply path;
The energy ray source is arranged so that the energy ray emitted from the energy ray source is irradiated to a chemical substance that passes through the transmission part and flows inside the chemical substance supply path,
The cross-sectional area of the flow path in the contracted portion and the cross-sectional area of the surface perpendicular to the flow direction in the contracted portion is the cross-sectional area of the flow path on the confluence portion side of the connecting portion of the contracted portion and the confluent portion The reaction apparatus is smaller than the cross-sectional area of the flow path on the discharge part side of the connection part between the contraction part and the discharge part. The number of the energy ray sources is equal to the number of the chemical substance supply paths,
The energy ray source is arranged for each chemical substance supply path,
The reaction apparatus according to claim 1. The energy source is one;
The energy beam source is arranged to irradiate energy beams to all the chemical substances in the chemical substance supply path with one energy beam source.
The reaction apparatus according to claim 1. The merging portion also includes a transmission portion that transmits the energy rays,
An energy ray source for irradiating the chemical substance in the junction with energy rays;
The reaction apparatus according to any one of claims 1 to 3. In the chemical substance supply path, the inner surface facing the transmission part has a mirror structure, and the energy rays transmitted through the transmission part are reflected by the mirror structure, and the chemical substance in the chemical substance supply path is Having a structure to irradiate again,
The reaction apparatus according to any one of claims 1 to 4. A method for producing a chemical substance using energy rays,
Flowing chemical substances horizontally in a plurality of flow paths;
Irradiating the chemical substance with energy rays while the chemical substance is flowing in the flow path to bring the chemical substance into an excited state;
Causing a chemical reaction in an excited state flowing through the plurality of flow paths to merge at one merging portion to initiate a chemical reaction;
Accelerating the chemical reaction by flowing the chemical substance merged in the merge part to the vertical contraction part to restrict the flow of the chemical substance;
Flowing the chemical substance flowing in the contraction part to the outflow part for allowing the chemical substance to flow out,
A method for producing a chemical substance comprising:   The method for producing a chemical substance according to claim 6, wherein the residence time of the chemical substance at the junction is 1 second or less.

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