WO2009084475A1 - フッ素化気体化合物の製造方法及び装置 - Google Patents
フッ素化気体化合物の製造方法及び装置 Download PDFInfo
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- WO2009084475A1 WO2009084475A1 PCT/JP2008/073178 JP2008073178W WO2009084475A1 WO 2009084475 A1 WO2009084475 A1 WO 2009084475A1 JP 2008073178 W JP2008073178 W JP 2008073178W WO 2009084475 A1 WO2009084475 A1 WO 2009084475A1
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/24—Inter-halogen compounds
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/083—Compounds containing nitrogen and non-metals and optionally metals containing one or more halogen atoms
- C01B21/0832—Binary compounds of nitrogen with halogens
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/083—Compounds containing nitrogen and non-metals and optionally metals containing one or more halogen atoms
- C01B21/0832—Binary compounds of nitrogen with halogens
- C01B21/0835—Nitrogen trifluoride
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- Fluorinated gaseous compounds such as NF 3 , IF 5 , IF 7 , ClF 3 , and WF 6 are used as internal cleaning agents for semiconductor manufacturing apparatuses such as CVD apparatuses and PVD apparatuses. Various methods for efficiently producing these gaseous compounds have been studied.
- the NF 3 , IF 5 , IF 7 , ClF 3 , and WF 6 are mentioned as examples in which the fluorination reaction has completely progressed in the present invention.
- the present applicant reacts a liquid ammonium complex compound with a gaseous interhalide such as ClF 3 to give the formula NF x L 3-x (L is a halogen other than F, 1 ⁇ x ⁇ 3).
- a gaseous interhalide such as ClF 3
- the nitrogen halide is further fluorinated in a later step and converted to NF 3 .
- continuous means that the raw material is continuously introduced during the operation of the technical means to cause a reaction to generate a functional gas.
- a fluorinated compound is produced by reacting a raw material gas with a non-gas raw material.
- the raw material liquid L and the raw material gas are made to react.
- the raw material liquid L needs to be continuously supplied to the reaction region where the raw material liquid L and the raw material gas react.
- a method for continuously supplying the raw material liquid L to the reaction zone a method of circulating the liquid acidic ammonium fluoride in the tank by applying the principle of the bubble column is disclosed (for example, see Patent Document 2).
- liquid acidic ammonium fluoride is reacted with gaseous fluorine to produce NF 3 .
- HF that does not participate in the reaction in the system is introduced into the tank as a vapor jet.
- a process for biological treatment of wastewater by converting into: (A) wastewater to be treated, one or more inlets / nozzles for inflow of wastewater, one or more outlets / nozzles for removal of purified water, one or more draft tubes, the draft Passing through a reaction vessel inside the tube having one or more inlets / nozzles for gas / air input capable of raising bubbles and a bed of particles with attached microbial membranes; (B) contacting the wastewater to be treated with a bed of particles containing the microorganisms to convert some components of the wastewater into a solid product; (C) introducing gas / air into the draft tube through a gas nozzle to form an upward flow of liquid through the draft tube; (D) separating the bed of particles from the solid product by the action of buoyancy; removing the
- an opening is provided from the middle wall of the reaction tank, and a partition wall is arranged upward.
- the inside of the partition wall is a reaction part
- the outside is a precipitation part
- air is sent from the lower part of the air lift wall provided in the reaction part to cause the carrier to flow upward, while microorganisms on the surface of the carrier enter the reaction tank.
- a wastewater treatment apparatus for treating wastewater to be supplied wherein a movable wall is provided on an upper portion of the air lift wall, and an upper end position of the movable wall is adjusted to suppress turbulent flow, thereby forming a biofilm on the surface of the carrier
- a wastewater treatment apparatus that promotes the above (see, for example, Patent Document 4).
- the heat of reaction substantially equivalent to the heat of HF evaporation is cooled by the HF recovery device by installing a coil cooler or the like on the outer wall of the reactor.
- the tank into which the liquid is introduced that is, the reactor 20 is not a linear shape as in the present invention, but is a bowl shape. Therefore, when the production scale is increased, the capacity of the reactor 20 is increased. Must be increased.
- the reactor 20 having a large capacity it is difficult to uniformly maintain the liquid introduced therein at a predetermined temperature, resulting in an increase in equipment costs and manufacturing costs. For example, in order to vaporize HF in ammonium oxyfluoride, it is necessary to maintain the reaction system at 100 ° C. or higher, and the above-described problem of increasing the capacity of the reactor becomes significant.
- the reaction vessel 1 that uses the process described in Patent Document 3 in the method for producing a fluorinated gas compound is also not a linear shape but a bowl shape as in the present invention. Therefore, if the production scale is to be increased, the capacity of the reaction vessel 1 must be increased, and there is the same problem as in Patent Document 2.
- the method and apparatus for producing a fluorinated gas compound according to the present invention includes a conventional method for producing nitrogen trifluoride and a method for returning a part of the gas generated by the reaction to the reaction region and using it as a flow source for circulating the reactants.
- An object of the present invention is to provide a method and an apparatus for producing a fluorinated gas compound, which is made in view of the above-described problems, has a simple apparatus, is less likely to fail, and can efficiently perform a chemical reaction.
- the first invention is in the method for producing a fluorinated gas compound in which a raw material liquid and a raw material gas are reacted to produce a fluorinated gas compound,
- a reaction region in which the mixed liquid containing the raw material liquid reacts with the raw material gas, a flow region in which only the mixed liquid flows, and an upper portion in which the mixed liquid after the reaction is moved from the upper part of the reaction region to the upper part of the flow region Forming a circulation system comprising a moving region and a lower moving region for moving the mixed liquid from a lower part of the flow region to a lower part of the reaction region; (A) a second gas obtained by further fluorinating the raw material gas below the reaction region, and (B) a first fluorinated gas compound and a first fluorinated gas compound which are reaction products in the reaction region.
- the second fluorinated gas compound obtained by further fluorinating the first fluorinated gas compound and the first fluorinated gas compound, which are reaction products in the reaction region, in addition to the raw material gas below the reaction region.
- the fluorinated gas compound of the reaction product may have a room for further fluorination, that is, the reactivity may be low due to the reactivity.
- the apparatus material such as the introduction pipe may be deteriorated. Therefore, in order to stably operate the apparatus, the gaseous compound introduced simultaneously with the raw material gas is obtained by further fluorinating the fluorinated gas compound, which is a reaction product in the reaction region, in order to reduce the reactivity. It is preferable to use a gaseous compound.
- Embodiments of the first invention are as follows.
- the liquid temperature of the mixed liquid is adjusted in the flow region or the region below the reaction region.
- the liquid temperature of the said mixed liquid can be adjusted effectively and a fluorinated gaseous compound can be manufactured efficiently.
- the region below the reaction region into which the raw material gas and the gaseous compound are introduced is a region in which the liquid temperature is adjusted, because the gas and liquid flows are in the same direction and the circulation of the liquid becomes more efficient.
- the source gas is preferably an interhalide.
- the raw material liquid L which is a complex compound, and the interhalide are combined
- the raw material interhalide (ClF 3 ) is injected into the raw material liquid L
- the interhalide gas is converted into the raw material It dissolves in the raw material liquid L according to the solubility in the liquid L.
- the reaction occurs between the raw material gas converted into the liquid and the raw material liquid L, so that the reaction proceeds efficiently.
- the circulation of the circulation system can be facilitated by further introducing the fluorinated gas compound of the reaction product into the lower part of the reaction region.
- the second invention is in the apparatus for producing a fluorinated gas compound, which reacts a raw material liquid and a raw material gas to produce a fluorinated gas compound,
- a reaction region in which the mixed liquid containing the raw material liquid reacts with the raw material gas, a flow region in which only the mixed liquid flows, and an upper portion in which the mixed liquid after the reaction is moved from the upper part of the reaction region to the upper part of the flow region Forming a circulation system comprising a moving region and a lower moving region for moving the mixed liquid from a lower part of the flow region to a lower part of the reaction region;
- An apparatus for producing a fluorinated gas compound is provided with a gas introduction part for introducing a compound.
- Embodiments of the second invention are as follows.
- a liquid temperature adjusting device for adjusting the liquid temperature of the mixed liquid is provided in the flow region or the region below the reaction region.
- the liquid temperature of the said mixed liquid can be adjusted effectively and a fluorinated gas compound can be manufactured efficiently.
- the method and apparatus for producing a fluorinated gas compound of the present invention it is possible to constitute a method and apparatus for producing a fluorinated gas compound that is simple and less prone to failure, and that can efficiently perform chemical reactions.
- FIG. 1 is a side view of the fluorinated gas compound production apparatus 10 of the first embodiment.
- FIG. 2 is a plan view of the fluorinated gas compound production apparatus 10.
- FIG. 3 is a horizontal sectional view of the return cooling section.
- FIG. 4 is an enlarged partial cross-sectional view of the source gas supply port of FIG.
- FIG. 5 is a longitudinal sectional view of the raw material reaction gas supply nozzle.
- the fluorinated gas compound production apparatus 10 includes a vertical cylindrical reaction unit 12, a separation tank 16 that separates liquid and gas by connecting an upper part of the reaction part 12 to a bottom part 14, and a separation tank 16. And a return cooling part 20 connected to the bottom part 14 and extending downward.
- a liquid such as NH 4 F ⁇ nHF is continuously circulated through the reaction unit 12, the separation tank 16, and the supply cooling unit 20 sequentially.
- the separation tank 16 connected to the bottom 14 above the reaction unit 12 to separate the liquid and the gas has a hollow cylindrical shape, and the inner surface is covered with a polytetrafluoroethylene thin film.
- the separation tank 16 having a circular horizontal cross section has a reaction part 12 and a return cooling part 20 connected to a bottom part 14.
- the separation tank 16 is provided with a reaction liquid amount adjusting port 30 for taking out or supplying the reaction liquid in a lower region of the side surface.
- a vacuum pump (not shown) may be installed at the port 32 in order to depressurize the inside of the separation tank 16.
- a liquid level gauge introduction port 32 is disposed at the center of the upper surface of the separation tank 16 (a liquid level gauge is not shown), and a thermometer introduction port 34 is formed on the same circumference in the middle part. (A thermometer is not shown) and four gas outlets 36 are provided.
- the return cooling unit 20 is provided with a refrigerant supply port 40 that supplies a chlorofluorocarbon refrigerant or the like in a lower region on the side surface, and a refrigerant takeout port 42 that extracts the chlorofluorocarbon refrigerant or the like in an upper region on the side surface.
- the return cooling unit 20 has a plurality of reaction liquid paths 46 in which the reaction liquid descends arranged in parallel inside a hollow cylindrical cooling housing 44. The refrigerant rises between the cooling housing 44 and the reaction liquid passage 46.
- the return cooling unit 20 has a lower end region that is bent at a right angle and becomes horizontal, and further bent at a right angle and is turned upward, and communicates with a lower end region of the reaction unit 12.
- a thermometer 50 for measuring the temperature of the reaction solution is horizontally disposed in a portion where the lower end region of the return cooling unit 20 is bent at a right angle and becomes horizontal.
- the reaction liquid which is taken out from the reaction liquid amount adjusting port 30 and adjusted to be the same level as the virgin raw material liquid L is returned to the return cooling section.
- a reaction solution replenishing port 54 for replenishing and supplying the gas 20 is provided vertically upward.
- the virgin raw material liquid L may be introduced from the return cooling unit 20.
- the return cooling unit 20 in the vicinity of the reaction unit 12 includes a raw material reaction gas ClF 3 , reaction products NF 2 Cl and NFCl 2 as reaction products in the reaction region, and NF obtained by further fluorinating these reaction product gases.
- a raw material gas supply port 60 for supplying 3 is provided.
- ClF 3 is a newly supplied raw material reaction gas
- NF 2 Cl and NFC 1 2 are taken out from the gas outlet 36 on the upper surface of the separation tank 16
- NF 3 is a product reaction gas NF taken out from the gas outlet 36. It was obtained by further fluorinating 2 Cl and NFCl 2 .
- fluorinating agents that fluorinate NF 2 Cl and NFCl 2 include, for example, fluorine-based gases such as F 2 and ClF 3 , metal fluorides such as CoF 3, and composite metals such as K 3 NiF 7. There are fluorides. It is also possible to generate NF 3 by thermal decomposition of NF 2 Cl and NFCl 2 besides fluorinating NF 2 Cl and NFCl 2.
- a raw material reaction gas supply nozzle 62 for supplying raw material reaction gases ClF 3 , NF 2 Cl, NFCl 2 , and NF 3 to the return cooling unit 20 is hollow and closed at its tip. A plurality of obliquely downward nozzle holes 66 are provided in the vicinity of the tip.
- the raw material reaction gas supply nozzle 62 is arranged such that the nozzle hole 66 is in the substantially central region of the return cooling unit 20.
- the operation of the fluorinated gas compound production apparatus 10 described above is as follows.
- the apparent specific gravity of the liquid in the reaction part (reaction area) is small and light, and the reaction part 12 (reaction area) rises while reacting and enters the separation tank 16.
- the source gas include (NH 4 ) 3 AlF 6 .nHF.
- Other examples of the raw material liquid include ClF, BrF, BrF 3 , ClF 5 , BrF 5 , IF 5 and IF 7 .
- the amount of the reaction liquid in the separation tank 16, that is, the water level of the reaction liquid, refers to the measurement value of the liquid level gauge 32, and the adjustment valve (not shown) of the reaction liquid amount adjustment port 30 of the separation tank 16 and the return cooling unit 20. Adjustment is performed by operating an adjustment valve (not shown) of the reaction liquid replenishing port 54.
- the generated reaction gases NF 2 Cl and NFC 1 2 are taken out from the four gas outlets 36, a part is sent to the next step as a target product, and the other part is supplied to the raw material gas supply port 60. .
- thermometer 34 of the separation tank 16 and the thermometer 50 of the return cooling unit 20 are set so that the temperature in the reaction unit 12 that directly affects the generation of the fluorinated gas compound is, for example, 20 ⁇ 5 ° C.
- an adjustment valve (not shown) is operated to control the supply amount of the refrigerant.
- FIG. 6 is a side view of the fluorinated gas compound production apparatus 10 of the second embodiment.
- the difference between the fluorinated gas compound production apparatus 110 of the second embodiment and the fluorinated gas compound production apparatus 10 of the first embodiment is that the cooling unit 124 is further below the lower part of the reaction region where the raw material gas and the gaseous compound are introduced. This is a point provided in the region.
- the cooling unit 124 may be configured to have a horizontal cross section as shown in FIG. Since the liquid temperature is adjusted by the cooling unit 124, the cooling unit 124 does not need to be provided in the return unit 122 corresponding to the return cooling unit 20 in FIG.
- Example 1 A reaction apparatus having the structure of the fluorinated gas compound apparatus 10 shown in FIG. 1 was prepared.
- the raw material liquid L (NH 4 F ⁇ 2.0HF) was introduced from the reaction liquid replenishing port 54, and the raw material liquid L was introduced into the reaction apparatus to a height approximately in the middle of the separation layer 16.
- the amount of raw material liquid introduced is about 35L.
- the reduced amount of the raw material liquid L was appropriately replenished from the reaction liquid replenishing port 54.
- a raw material gas ClF 3 gas is introduced from the raw material supply port 60 at a flow rate of 4 SLM, the reaction is started, and reaction product gases NF 2 Cl and NFCl 2 obtained by the reaction are taken out from the gas outlet 36, and a part thereof is not shown. It returns to the raw material supply port 60 through piping (made of SUS304).
- the flow rate of the reaction product gas introduced from the raw material supply port 60 was set to 40 to 60 SLM.
- the temperature of the liquid in the separation layer 16 parts was adjusted to 19 ° C. to 25 ° C. by cooling the return cooling part.
- the reactor was operated for 240 hours, but no problem occurred.
- Example 2 A reaction apparatus having the structure of the fluorinated gas compound apparatus 10 shown in FIG. 1 was prepared.
- the raw material liquid L (NH 4 F ⁇ 2.0HF) was introduced from the reaction liquid replenishing port 54, and the raw material liquid L was introduced into the reaction apparatus to a height approximately in the middle of the separation layer 16.
- the amount of the raw material liquid introduced is 35L.
- the reduced amount of the raw material liquid L was appropriately replenished from the reaction liquid replenishing port 54.
- the raw material gas ClF 3 gas is introduced from the raw material supply port 60 at a flow rate of 0.4 SLM, the reaction is started, the reaction product gases NF 2 Cl and NFCl 2 obtained by the reaction are taken out from the gas outlet 36, and the total amount thereof is as follows:
- “gas compound NF 3 obtained by further fluorination” is obtained, and a part of the obtained gas compound is returned to the raw material supply port 60 through a pipe (not shown) (manufactured by SUS304).
- the flow rate of the reaction product gas introduced from the raw material supply port 60 was set to 40 to 60 SLM. This includes 5 to 6 SLM of unreacted ClF 3 . Of these, including the source gas ClF 3 gas, about 4 SLM actually reacts.
- the temperature of the liquid in the separation layer 16 parts was adjusted to 19 ° C. to 25 ° C. by cooling the return cooling part.
- the reactor was operated for 240 hours, but no problem occurred. Further, the gas composition at the latter stage of the gas outlet 36 was analyzed during the reaction. The results are shown in Table 1. Compared to Comparative Example 1, the ratio of N 2 in the gas was small.
- Comparative Example 1 A reaction apparatus having the structure of the fluorinated gas compound apparatus 10 shown in FIG. 1 was prepared.
- the raw material liquid L (NH 4 F ⁇ 2.0HF) was introduced from the reaction liquid replenishing port 54, and the raw material liquid L was introduced into the reaction apparatus to a height approximately in the middle of the separation layer 16.
- the amount of the raw material liquid introduced is 35L.
- the reduced amount of the raw material liquid L was appropriately replenished from the reaction liquid replenishing port 54.
- the raw material gas ClF 3 gas is introduced from the raw material supply port 60 at a flow rate of 4 SLM, the reaction is started, the reaction product gases NF 2 Cl and NFCl 2 obtained by the reaction are taken out from the gas outlet 36, and a part of the taken out is shown in the figure. Is returned to the raw material supply port 60 through a pipe (made of SUS304).
- the flow rate of the reaction product gas introduced from the raw material supply port 60 was set to 40 to 60 SLM.
- the temperature of the liquid in the separation layer 16 parts was adjusted to 19 ° C. to 25 ° C. by cooling the return cooling part.
- FIG. 1 is a side view of the fluorinated gas compound production apparatus 10 of the first embodiment.
- FIG. 2 is a plan view of the fluorinated gas compound production apparatus 10 of the first embodiment.
- FIG. 3 is a horizontal sectional view of the return cooling unit 20 or the cooling unit 21.
- FIG. 4 is an enlarged partial cross-sectional view of the source gas supply port of FIG. 1 or FIG.
- FIG. 5 is a longitudinal sectional view of the raw material reaction gas supply nozzle.
- FIG. 6 is a side view of the fluorinated gas compound production apparatus 110 of the second embodiment.
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Description
(a)処理されるべき廃水を、廃水の流入のための1つ以上の入口/ノズル、精製された水の除去のための1つ以上の出口/ノズル、1つ以上のドラフトチューブ、該ドラフトチューブの内側の、泡を上昇させ得るガス/空気のインプットのための1つ以上の入口/ノズル、および微生物膜が付着した粒子のベッドを有する反応ベッセル中を通過させる工程;
(b)該処理されるべき廃水を、該微生物を含む粒子のベッドと接触させ、該廃水のいくつかの成分を固形産物に変換する工程;
(c)該ドラフトチューブを通る液体の上向き流れを形成するために、ガスノズルを通じて該ドラフトチューブ中にガス/空気を導入する工程;
(d)浮力の作用により該固形産物から該粒子のベッドを分離し;該ベッセルから、処理水を、所望であれば連続的に除去する工程;および
(e)該反応ベッセルの底から、該粒子の固形産物を、所望であれば連続的に除去する工程、を包含する、プロセスが提案されている(例えば、特許文献3参照)。
本発明のフッ素化気体化合物の製造方法及び装置は、従来の三フッ化窒素の製造方法及び反応により発生した気体の一部を反応領域に戻して反応物質の循環の流動源として使用する方法の上述した問題点に鑑みてなされたものであって、装置が簡易で故障のおそれが少なく、化学反応も効率的になされるフッ素化気体化合物の製造方法及び装置を提供することを目的とする。
原料液体と原料気体とを反応させてフッ素化された気体化合物を製造するフッ素化気体化合物の製造方法において、
前記原料液体を含む混合液体を原料気体と反応させる反応領域と、前記混合液体のみが流動する流動領域と、反応後の前記混合液体を前記反応領域の上部から前記流動領域の上部へ移動させる上部移動領域と、前記混合液体を前記流動領域の下部から前記反応領域の下部へ移動させる下部移動領域とからなる循環系を形成し、
(A)前記反応領域の下部に前記原料気体と、(B)前記反応領域における反応生成物である第1フッ素化気体化合物及び該第1フッ素化気体化合物をさらにフッ素化させて得られる第2フッ素気体化合物から選ばれる少なくとも一種のフッ素化気体化合物とを導入することによって前記混合液体を循環させることを特徴とするフッ素化気体化合物の製造方法である。
前記反応領域の下部に前記原料気体だけでなく、前記反応領域における反応生成物である第1フッ素化気体化合物及び該第1フッ素化気体化合物をさらにフッ素化させて得られる第2フッ素化気体化合物から選ばれる少なくとも一種のフッ素化気体化合物を導入することによって、液体と気体とが共存することによるみかけ比重の低下の抑制を確実に行うことができるようになる。
前記流動領域、又は前記反応領域より下方の領域において、前記混合液体の液温調整することを特徴とする。このように構成することによって、有効に前記混合液体の液温調整を行って、効率的にフッ素化気体化合物を製造することができる。
さらに、原料気体及び気体化合物が導入される反応領域の下方の領域を、液温調整する領域とすると、気体と液体の流れが同一方向となり、液の循環がより効率化するので好ましい。
原料液体と原料気体とを反応させてフッ素化された気体化合物を製造するフッ素化気体化合物の製造装置において、
前記原料液体を含む混合液体を原料気体と反応させる反応領域と、前記混合液体のみが流動する流動領域と、反応後の前記混合液体を前記反応領域の上部から前記流動領域の上部へ移動させる上部移動領域と、前記混合液体を前記流動領域の下部から前記反応領域の下部へ移動させる下部移動領域とからなる循環系を形成し、
前記反応領域の下部に前記原料気体及び反応生成物の第1フッ素化気体化合物及び該第1フッ素化気体化合物をさらにフッ素化させて得られる第2フッ素化気体化合物から選ばれる少なくとも一種のフッ素気体化合物を導入する気体導入部を設けたことを特徴とするフッ素化気体化合物の製造装置である。
前記流動領域、又は前記反応領域より下方の領域において、前記混合液体の液温調整する液温調整装置を設けたことを特徴とする。このように構成することにより、有効に前記混合液体の液温調整を行って、効率的にフッ素化気体化合物を製造することができる。
以下に、本発明の第1実施形態のフッ素化気体化合物の製造装置を図に基づいて説明する。図1は、第1実施形態のフッ素化気体化合物製造装置10の側面図である。図2は、フッ素化気体化合物製造装置10の平面図である。図3は、戻り冷却部の水平断面図である。図4は、図1の原料ガス供給口の拡大部分断面図である。図5は、原料反応ガス供給ノズルの縦断面図である。
フッ素化気体化合物製造装置10は、図1に示すように、垂直な円筒状の反応部12、反応部12の上方部を底部14に連結され液体と気体を分離する分離槽16、分離槽16の底部14に連結され下方へ延びた戻り冷却部20を有する。NH4F・nHF等の液体は、反応部12、分離槽16及び供給冷却部20を順次連続的に循環する。
戻り冷却部20に原料反応ガスであるClF3、NF2Cl、NFCl2、NF3を供給するための原料反応ガス供給ノズル62は、図4及び5に示すように、中空で先端が閉じ、先端近傍に斜め下向きの複数のノズル孔66を設けている。原料反応ガス供給ノズル62は、ノズル孔66が戻り冷却部20の管路の略中心領域にあるように配置される。
上述したフッ素化気体化合物製造装置10の作動は、以下のとおりである。戻り冷却部20において、反応液量調整口30から取り出され、バージンの原料液体Lと同程度になるように調整された反応液、バージンの原料液体L(例えば、NH4F・nHF)、及び戻り冷却部20で冷却された原料液体Lのいずれかを一種以上を有する液体に、供給口60から原料気体(原料反応ガス)ClF3と、生成反応ガスNF2Cl、NFCl2、NF3等とが混入される。その結果、反応部(反応領域)の液体の見かけ上の比重が小さく軽量になり、反応をしながら反応部12(反応領域)を上昇して、分離槽16に入る。
原料気体のその他の例として、(NH4)3AlF6・nHF等が挙げられる。また、原料液体のその他の例としてClF、BrF、BrF3、ClF5、BrF5、IF5、IF7等が挙げられる。
分離槽16では、生成反応ガスNF2Cl及びNFCl2が四つのガス出口36から取り出され、一部は目的物として次の工程に送られ、他の部分は原料ガス供給口60に供給される。
図6は、第2実施態様のフッ素化気体化合物製造装置10の側面図である。第2実施態様のフッ素化気体化合物製造装置110と第1実施態様のフッ素化気体化合物製造装置10の差異は、冷却部124が原料気体及び気体化合物が導入される反応領域の下部のさらに下方の領域に設けられている点である。冷却部124は、図3に示すような水平断面をもつように構成してもよい。冷却部124によって液温調整がなされるから、図6の装置110では、図1中の戻り冷却部20に相当する戻り部122では、冷却構造を設けなくてもよい。
図1に示すフッ素化気体化合物装置10の構造を有する反応装置を用意した。反応液補充口54から原料液体L(NH4F・2.0HF)を導入し、分離層16の中間程度の高さまで原料液体Lを反応装置に導入した。導入された原料液体量は、約35Lである。反応中に原料液体Lの減少分は、反応液補充口54から適宜補充を行った。
尚、反応中は、戻り冷却部を冷却することで、分離層16部の液体の温度19℃~25℃に調整された。
原料気体と反応生成ガスとを原料供給口60から導入し始めてから、240時間反応装置を作動させたが問題が発生することはなかった。
図1に示すフッ素化気体化合物装置10の構造を有する反応装置を用意した。反応液補充口54から原料液体L(NH4F・2.0HF)を導入し、分離層16の中間程度の高さまで原料液体Lを反応装置に導入した。導入された原料液体量は、35Lである。反応中に原料液体Lの減少分は、反応液補充口54から適宜補充を行った。
原料気体と反応生成ガスとを原料供給口60から導入し始めてから、240時間反応装置を作動させたが問題が発生することはなかった。さらに、反応中にガス出口36の後段のガス組成を分析した。その結果を表1に示す。比較例1と比べてガス中のN2の比率が少なかった。
図1に示すフッ素化気体化合物装置10の構造を有する反応装置を用意した。反応液補充口54から原料液体L(NH4F・2.0HF)を導入し、分離層16の中間程度の高さまで原料液体Lを反応装置に導入した。導入された原料液体量は、35Lである。反応中に原料液体Lの減少分は、反応液補充口54から適宜補充を行った。
尚、反応中は、戻り冷却部を冷却することで、分離層16部の液体の温度19℃~25℃に調整された。
実施例1と比較して明らかにガス出口36の後段のガス組成中に占めるN2の割合が多かった。NF2Cl、NFCl2とF2からNF3を合成する反応の収率はほぼ100%であるため、実施例2と比べ劣る結果となった。
10 フッ素化気体化合物製造装置
12 反応部
14 底部
16 分離槽
20 戻り冷却部
30 反応液量調整口
32 液面計導入口
34 温度計導入口
36 ガス出口
40 冷媒供給口
42 冷媒取り出し口
44 冷却ハウジング
46 反応液路
50 温度計
54 反応液補充口
60 原料ガス供給口
62 原料反応ガス供給ノズル
66 複数のノズル孔
110 フッ素化気体化合物製造装置
122 戻り部
124 冷却部
Claims (7)
- 原料液体と原料気体とを反応させてフッ素化された気体化合物を製造するフッ素化気体化合物の製造方法において、
前記原料液体を含む混合液体を原料気体と反応させる反応領域と、前記混合液体のみが流動する流動領域と、反応後の前記混合液体を前記反応領域の上部から前記流動領域の上部へ移動させる上部移動領域と、前記混合液体を前記流動領域の下部から前記反応領域の下部へ移動させる下部移動領域とからなる循環系を形成し、
(A)前記反応領域の下部に前記原料気体と、(B)前記反応領域における反応生成物である第1フッ素化気体化合物及び該第1フッ素化気体化合物をさらにフッ素化させて得られる第2フッ素化気体化合物から選ばれる少なくとも一種のフッ素化気体化合物とを導入することによって前記混合液体を循環させることを特徴とするフッ素化気体化合物の製造方法。 - 前記流動領域、又は前記反応領域より下方の領域において、前記混合液体の液温調整することを特徴とする請求項1に記載のフッ素化気体化合物の製造方法。
- 前記原料気体が、インターハロゲン化物であることを特徴とする請求項1又は請求項2に記載のフッ素化気体化合物の製造方法。
- 前記原料液体が、錯体化合物であることを特徴とする請求項1乃至請求項3のいずれかに記載のフッ素化気体化合物の製造方法。
- 前記第2フッ素化気体化合物が、フッ素化反応が完全に進行したものであることを特徴とする請求項1ないし4のいずれかに記載のフッ素化気体化合物の製造方法。
- 原料液体と原料気体とを反応させてフッ素化された気体化合物を製造するフッ素化気体化合物の製造装置において、
前記原料液体を含む混合液体を原料気体と反応させる反応領域と、前記混合液体のみが流動する流動領域と、反応後の前記混合液体を前記反応領域の上部から前記流動領域の上部へ移動させる上部移動領域と、前記混合液体を前記流動領域の下部から前記反応領域の下部へ移動させる下部移動領域とからなる循環反応部を形成し、
前記反応領域の下部に前記原料気体及び反応生成物の第1フッ素化気体化合物及び該第1フッ素化気体化合物をさらにフッ素化させて得られる第2フッ素化気体化合物から選ばれる少なくとも一種のフッ素気体化合物を導入する気体導入部を設けたことを特徴とするフッ素化気体化合物の製造装置。 - 前記流動領域、又は前記反応領域より下方の領域において、前記混合液体の液温調整する液温調整装置を設けたことを特徴とする請求項6に記載のフッ素化気体化合物の製造装置。
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CN2008801206339A CN101896423B (zh) | 2007-12-27 | 2008-12-19 | 氟化气体化合物的制造方法及装置 |
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US12/740,386 US20100239485A1 (en) | 2007-12-27 | 2008-12-19 | Method of manufacturing fluorinated gas compounds and apparatus for manufacturing the same |
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KR101163894B1 (ko) | 2012-07-09 |
CN101896423B (zh) | 2012-10-10 |
EP2246296B1 (en) | 2016-11-09 |
JPWO2009084475A1 (ja) | 2011-05-19 |
EP2246296A1 (en) | 2010-11-03 |
KR20100103574A (ko) | 2010-09-27 |
JP5413201B2 (ja) | 2014-02-12 |
CN101896423A (zh) | 2010-11-24 |
US20100239485A1 (en) | 2010-09-23 |
EP2246296A4 (en) | 2011-08-31 |
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