JPH05253468A - Method and device for spray thermal decomposition - Google Patents
Method and device for spray thermal decompositionInfo
- Publication number
- JPH05253468A JPH05253468A JP5147492A JP5147492A JPH05253468A JP H05253468 A JPH05253468 A JP H05253468A JP 5147492 A JP5147492 A JP 5147492A JP 5147492 A JP5147492 A JP 5147492A JP H05253468 A JPH05253468 A JP H05253468A
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- Japan
- Prior art keywords
- reaction chamber
- gas
- cooling gas
- spray pyrolysis
- thermal decomposition
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、噴霧熱分解方法および
装置に関する。FIELD OF THE INVENTION The present invention relates to a spray pyrolysis method and apparatus.
【０００２】[0002]
【従来の技術】ファインセラミックスのよりファインな
性質は、原料の純度、化学組成、微細な組織の制御によ
り初めて得ることができる。製造プロセス、特に原料の
合成法が製品開発の鍵を握ることも少なくない。高純度
かつ化合物・混合物の場合の組成の高均一性、また微細
で反応活性が高いことが原料粉体に共通して求められ
る。このような性質を有するセラミックス粉体を得るた
めの合成法は種々考案されているが、微細、高純度、高
組成均一性の要求を満たすための合成法として気相や液
相を経由した合成法がある。従来の固相を用いた場合と
異なり、液相を経由した合成法は各構成元素が原子オー
ダーで混合していると考えられている。液相法は、溶媒
中に存在する金属元素を水酸化物、硝酸塩、硫酸塩、炭
酸塩などにして析出させ、これを熱分解して酸化物微粉
末を合成する方法である。液相法には、金属塩の析出方
法や熱分解の方法の違いにより多くの方法が開発されて
いるが、噴霧熱分解法はその一方法である。Finer properties of fine ceramics can be obtained only by controlling the purity, chemical composition and fine structure of raw materials. The manufacturing process, especially the method of synthesizing raw materials, often holds the key to product development. High purity and high uniformity of composition in the case of compound / mixture, and fineness and high reaction activity are commonly required for raw material powders. Various synthetic methods have been devised to obtain ceramic powders having such properties, but as a synthetic method for satisfying the requirements for fineness, high purity, and high compositional uniformity, synthesis via a gas phase or a liquid phase is performed. There is a law. Unlike the conventional case where a solid phase is used, it is considered that each constituent element is mixed in atomic order in the synthesis method via a liquid phase. The liquid phase method is a method of precipitating metal elements present in a solvent into hydroxides, nitrates, sulfates, carbonates and the like, and thermally decomposing the metal elements to synthesize oxide fine powders. Many liquid phase methods have been developed depending on the difference in the method of precipitating a metal salt and the method of thermal decomposition, and the spray thermal decomposition method is one of them.
【０００３】噴霧熱分解法は、金属塩溶液を、熱分解が
起こる温度以上の高温に保持した雰囲気中に微細な液滴
として噴霧し、極めて短時間で溶媒の蒸発、金属塩の析
出、その熱分解を行ない、酸化物（非酸化物も可能）微
粉末を合成する方法である。この方法による粉末は、原
子スケールでの組成均一性や微量成分元素の均一分散性
の利点を有しており、分散性のよい微粒子が得られる。
そして、たとえ乾燥、熱分解による組成の不均一性があ
っても、それは分割された微粒子内に物理的に限定され
るので、成分の再配列による組成分離が少ない。また、
噴霧された個々の溶液に含まれる成分の割合は、調整さ
れた溶液のそれに極めて近く、そのため成分の分散を厳
密に制御することができる。In the spray pyrolysis method, a metal salt solution is sprayed as fine droplets in an atmosphere kept at a temperature higher than the temperature at which pyrolysis occurs, and the solvent is evaporated and the metal salt is precipitated in an extremely short time. This is a method in which thermal decomposition is performed to synthesize oxide (non-oxide) fine powder. The powder obtained by this method has the advantages of compositional uniformity on the atomic scale and uniform dispersibility of trace constituent elements, and fine particles with good dispersibility can be obtained.
Even if there is non-uniformity of composition due to drying or thermal decomposition, it is physically limited within the divided fine particles, so that composition separation due to rearrangement of components is small. Also,
The proportion of the components contained in the individual sprayed solutions is very close to that of the conditioned solution, so that the dispersion of the components can be tightly controlled.
【０００４】以上説明したように、噴霧熱分解法は、フ
アインセラミックスや酸化物超電導材料の原料の金属塩
溶液を、例えば５００〜１３００℃の高温の熱分解装置
に霧状に噴霧し、極めて短時間に熱分解・反応または合
成を行ない、微粉末を製造する方法である。As described above, in the spray pyrolysis method, a metal salt solution as a raw material for fine ceramics or oxide superconducting material is atomized into a pyrolysis device at a high temperature of, for example, 500 to 1300 ° C. It is a method of producing fine powder by performing thermal decomposition / reaction or synthesis in a short time.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の噴霧熱分解法は、実験室的段階に留まってい
る状況で、試験規模の非常に小さいものしかなく、また
運転時間も短く、連続運転性を考慮したものはなかっ
た。また、製品回収は、反応室下部に堆積した製品微粒
子を運転終了後に、運転終了の都度回収するという方法
が採られていた。従って本発明は、上記のような従来の
課題を解決し、製品を連続的に回収できるようにした噴
霧熱分解方法と装置を提供することを目的とするもので
ある。However, such a conventional spray pyrolysis method has a very small test scale in a situation where it remains in a laboratory stage, and also has a short operating time and continuous operation. There was nothing that considered drivability. In addition, the product was collected by collecting the product particles deposited in the lower part of the reaction chamber after the operation was completed and each time the operation was completed. Therefore, an object of the present invention is to solve the above-mentioned conventional problems and provide a spray pyrolysis method and apparatus capable of continuously collecting products.
【０００６】[0006]
【課題を解決するための手段】そして、その目的は、本
発明によれば、原液を竪型反応室の上部から反応室内に
噴霧するとともに、噴霧された原液を反応室内において
固化後熱分解し、得られた粉体を反応室下部より取り出
す噴霧熱分解方法において、反応室下部を半二重構造と
し、冷却用ガスを該半二重構造の隔壁間に導入して、噴
霧熱分解後の固気混合物を間接的に冷却することを特徴
とする噴霧熱分解方法により達成することができる。According to the present invention, the object is to spray the stock solution into the reaction chamber from the upper part of the vertical reaction chamber, and the sprayed stock solution is thermally decomposed after solidification in the reaction chamber. In the spray pyrolysis method of taking out the obtained powder from the lower part of the reaction chamber, the lower part of the reaction chamber is made to have a half-duplex structure, and a cooling gas is introduced between the partition walls of the half-duplex structure to obtain the powder after spray pyrolysis. It can be achieved by a spray pyrolysis method which is characterized by indirectly cooling the solid-gas mixture.
【０００７】また、本発明によれば、竪型反応室と、該
反応室の上部に配置された噴霧器とを備えた噴霧熱分解
装置において、該反応室の下部を逆円錐台状に形成する
とともに半二重構造とし、反応室下部の外側部に冷却用
ガス導入口を設けたことを特徴とする噴霧熱分解装置が
提供される。なお、本発明の噴霧熱分解方法では、冷却
用ガスの種類としては噴霧される原液により異なるが、
一般に空気、Ｎ2 ガスまたはＡｒガスを用いることが好
ましく、また冷却用ガスの温度としては４０〜１２０℃
が好ましい。さらに、冷却用ガスにより粉体を同伴した
ガス温度を７０〜２６０℃まで冷却することが、下流側
のサイクロン、バグフィルター等の固気分離装置の耐熱
性に鑑みて好ましい。Further, according to the present invention, in a spray pyrolysis apparatus equipped with a vertical reaction chamber and an atomizer arranged above the reaction chamber, the lower part of the reaction chamber is formed into an inverted truncated cone shape. Further, there is provided a spray pyrolysis apparatus characterized by having a half-duplex structure and having a cooling gas introduction port provided on the outer side of the lower part of the reaction chamber. In the spray pyrolysis method of the present invention, the type of cooling gas varies depending on the stock solution to be sprayed,
Generally, it is preferable to use air, N 2 gas or Ar gas, and the temperature of the cooling gas is 40 to 120 ° C.
Is preferred. Further, it is preferable to cool the gas temperature accompanied by the powder by the cooling gas to 70 to 260 ° C. in view of the heat resistance of the solid-gas separation device such as the cyclone and the bag filter on the downstream side.
【０００８】一方、噴霧熱分解装置としては、反応室内
雰囲気を熱分解温度以上に高く保持するため、反応室の
外側に反応室を取り囲んで加熱炉を設けることが好まし
い。なお、原液とガスとが接触し、燃焼等の反応熱によ
り高温になる場合には、加熱炉は特には必要でない。ま
た、反応室下部の半二重構造としては、底部に粉体取出
し口を有する内側隔壁（内部構造）とそれを取り囲む外
側隔壁（外部構造）とからなる構造が好ましい。On the other hand, as the spray pyrolysis apparatus, in order to maintain the atmosphere inside the reaction chamber at a temperature higher than the pyrolysis temperature, it is preferable to provide a heating furnace surrounding the reaction chamber outside the reaction chamber. A heating furnace is not particularly required when the undiluted solution and the gas come into contact with each other and the temperature becomes high due to the heat of reaction such as combustion. The half-duplex structure in the lower part of the reaction chamber is preferably a structure including an inner partition wall (internal structure) having a powder outlet at the bottom and an outer partition wall (external structure) surrounding the partition wall.
【０００９】[0009]
【作用】本発明者は、製品微粒子の品質を落とすことな
く、かつ反応室内部の反応に影響を与えることなく製品
微粒子を連続的に回収するために、得られる製品微粒子
の温度を下げるべく種々検討したところ、竪型反応室下
部に冷却用のガスを直接注入したのでは、反応室内部に
おけるガス流に乱れが生じ、噴霧熱分解に好ましくない
ことを見出した。そこで、竪型反応室の下部において、
冷却用のガスの流れが製品微粒子を運搬するキャリアガ
スと直接接触するような方法で注入することを止め、反
応室の下部を半（セミ）二重構造とする構成を採用し、
間接接触するような方法で冷却用のガスを注入すること
としたのである。In order to continuously collect the product particles without deteriorating the quality of the product particles and without affecting the reaction in the reaction chamber, the inventor has various methods for lowering the temperature of the product particles obtained. As a result of investigation, it was found that injecting the cooling gas directly into the lower portion of the vertical reaction chamber causes turbulence in the gas flow inside the reaction chamber, which is not preferable for spray pyrolysis. So, in the lower part of the vertical reaction chamber,
The cooling gas flow was stopped by direct contact with the carrier gas that carries the product particles, and the lower part of the reaction chamber had a semi-double structure.
It was decided to inject the cooling gas in such a manner as to make indirect contact.
【００１０】即ち、反応室下部のセミ二重構造は、その
内部構造が、逆円錐台状で底部に粉体取出し口を有する
内側隔壁を形成しており、その外部構造が内側隔壁を包
んだ構造を有する。冷却用ガスは、内側隔壁の外側面に
向かって注入されるので、外側面を冷却して反応室下部
内の粉体を同伴したキャリアガスと熱交換を行ない、ま
た注入された冷却用ガスは内側隔壁の外側面に衝突する
ことによって運動エネルギーを失って流速が減速され
る。次に、冷却用ガスは、内側隔壁底部の粉体取出し口
からのキャリアガスと混合することによりキャリアガス
をさらに冷却し、かつキャリアガスと共に落下してきた
製品微粒子を混合し、攪拌し、そして冷却する。That is, in the semi-double structure in the lower part of the reaction chamber, the inner structure forms an inner partition having an inverted truncated cone shape and a powder outlet at the bottom, and the outer structure encloses the inner partition. Have a structure. Since the cooling gas is injected toward the outer surface of the inner partition wall, the outer surface is cooled to perform heat exchange with the carrier gas entrained in the powder in the lower part of the reaction chamber, and the injected cooling gas is By colliding with the outer surface of the inner partition, the kinetic energy is lost and the flow velocity is reduced. Next, the cooling gas further cools the carrier gas by mixing with the carrier gas from the powder outlet at the bottom of the inner partition wall, and also mixes the product particles that have fallen together with the carrier gas, stirs, and cools them. To do.
【００１１】その結果、下流側に配置されるサイクロ
ン、バグフィルタなどの固・気分離装置に通ずる、反応
室下方部の冷却用ガスとキャリアガスとの混合室におい
て、適温の製品微粒子を同伴するガスを得ることができ
るのである。また、内側隔壁の側面は、反応室から混合
室への熱輻射の影響を防止することができる。内側隔壁
の側面は、注入されたガスによって外側から冷却される
ので、高耐熱性の材料を側面に使用する必要はなく、イ
ンコネル、ハステロイ、ステンレスなどの通常の金属材
料を使用することができる。内側隔壁６の傾斜角αは、
製品微粒子が流動し易くするため４０〜８０°、好まし
くは４５〜７５°に形成する。As a result, in the mixing chamber of the cooling gas and the carrier gas in the lower part of the reaction chamber, which communicates with the solid / gas separation device such as a cyclone or a bag filter arranged on the downstream side, the fine particles of a suitable temperature are entrained. You can get gas. Further, the side surface of the inner partition wall can prevent the influence of heat radiation from the reaction chamber to the mixing chamber. Since the side surface of the inner partition wall is cooled from the outside by the injected gas, it is not necessary to use a high heat resistant material for the side surface, and a normal metal material such as Inconel, Hastelloy, and stainless can be used. The inclination angle α of the inner partition wall 6 is
The product fine particles are formed at 40 to 80 °, preferably 45 to 75 ° in order to facilitate the flow.
【００１２】[0012]
【実施例】次に、本発明の実施例を図面に基ずいて更に
詳しく説明するが、本発明はこれらの実施例に限られる
ものではない。 （実施例１）図１は、本発明の噴霧熱分解装置の一例を
示す概略断面図である。図１において、噴霧熱分解装置
１は、竪型反応室２と、竪型反応室２の外側を囲んでな
るファーネス３と、竪型反応室２の上部に配置された噴
霧器たる二流体ノズル４を備えている。竪型反応室２の
下部５は、底部に粉体取出し口８を有する逆円錐台状の
内側隔壁（ホッパー）６と、同じく逆円錐台状の外側隔
壁７と、外側隔壁７から下方に連続して形成される混合
室９とからなり、セミ二重構造に構成されている。ま
た、外側隔壁７には冷却用ガス注入口１０が設けられ、
混合室９には図示しない下流側のバグフィルターなどの
固気分離装置に通じる吸引口１１が、それぞれ設けられ
ている。Embodiments of the present invention will now be described in more detail with reference to the drawings, but the present invention is not limited to these embodiments. (Embodiment 1) FIG. 1 is a schematic sectional view showing an example of the spray pyrolysis apparatus of the present invention. In FIG. 1, a spray pyrolysis apparatus 1 includes a vertical reaction chamber 2, a furnace 3 surrounding the outside of the vertical reaction chamber 2, and a two-fluid nozzle 4 as an atomizer arranged above the vertical reaction chamber 2. Is equipped with. The lower part 5 of the vertical reaction chamber 2 is continuous from the inner partition wall (hopper) 6 having an inverted frustoconical shape having a powder outlet 8 at the bottom, the outer partition wall 7 having the same inverted frustoconical shape, and downward from the outer partition wall 7. And a mixing chamber 9 formed as described above, and has a semi-double structure. Further, the outer partition wall 7 is provided with a cooling gas injection port 10,
The mixing chamber 9 is provided with a suction port 11 which communicates with a solid gas separation device such as a bag filter on the downstream side (not shown).
【００１３】また竪型反応室２は、３００ｍｍφ×１０
００ｍｍ（高さ）の石英管１２を採用した。ファーネス
３は、温度調節のできる電気ヒーターと耐火物から構成
され、石英管１２との間に空間１５を設けた。ファーネ
ス３の上部、下部は各々耐火物１４によって保持され、
熱ロスを防止するためファーネス３の外側には保温部材
１３を配設してある。又、内側隔壁（ホッパー）６の傾
斜角αは６０°とした。逆円錐台状の外側隔壁７の傾斜
角βは、内側隔壁６の傾斜角αよりも約１０°大きくと
って実施した。The vertical reaction chamber 2 is 300 mmφ × 10
A quartz tube 12 of 00 mm (height) was adopted. The furnace 3 is composed of an electric heater capable of temperature control and a refractory material, and a space 15 is provided between the furnace 3 and the quartz tube 12. The upper and lower parts of the furnace 3 are held by refractory materials 14,
A heat insulating member 13 is arranged outside the furnace 3 to prevent heat loss. The inclination angle α of the inner partition wall (hopper) 6 was set to 60 °. The inclination angle β of the outer partition 7 having the shape of an inverted truncated cone was set to be larger than the inclination angle α of the inner partition 6 by about 10 °.
【００１４】原料溶液としては、硝酸アルミニウムと珪
酸エチルのムライト（３Ａｌ2 Ｏ3・２ＳｉＯ2 ）組成
として０．２ｍｏｌ／ｌとなるように水およびエタノー
ル（５０：５０ｖｏｌ％）を加えて調整した溶液を用
い、二流体ノズルの微粒化用ガス、キャリアガス、およ
び冷却用ガスに夫々空気を用いて、表１の条件で運転を
行ない、表１の結果を得た。The raw material solution was prepared by adding water and ethanol (50:50 vol%) so that the composition of mullite (3Al 2 O 3 .2SiO 2 ) of aluminum nitrate and ethyl silicate would be 0.2 mol / l. And the air was used as the atomizing gas, the carrier gas, and the cooling gas of the two-fluid nozzle, and the operation was performed under the conditions of Table 1 to obtain the results of Table 1.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１の結果から、冷却用ガス注入口１０か
ら空気を表１の条件で注入して、反応後のキャリアガス
と製品微粒子の温度の低下、反応室下部５の状況を調べ
たところ、４０℃未満の温度の冷却用ガスの注入では、
局所的に温度が下がり過ぎ、壁面に結露が生じ、製品微
粒子がその部分に付着する。また、反応室下部５の金属
部材が腐蝕され易くなることが分かった。一方１２０℃
を超える温度の冷却用ガスの注入では、冷却効果が小さ
く、大量のガスの導入が必要となる。従って、冷却用ガ
スの最適温度は４０〜１２０℃であることが分かった。
このような温度範囲の冷却用ガスの使用により、反応室
の下部５のセミ二重構造内における冷却効果を保持する
ことができるので、これを構成するホッパー６、外側隔
壁７、混合室９、冷却用ガス注入口１０、および吸引口
１１の部材として、インコネル、ハステロイ、ステンレ
スなどの通常の金属を使用したが特段の支障はなかっ
た。From the results shown in Table 1, air was injected from the cooling gas inlet 10 under the conditions shown in Table 1, and the temperature of the carrier gas and the product fine particles after the reaction was lowered and the condition of the lower portion 5 of the reaction chamber was examined. , Injection of cooling gas at a temperature below 40 ° C.,
The temperature is locally too low, and dew condensation occurs on the wall surface, and product particles adhere to the part. It was also found that the metal member in the lower part of the reaction chamber 5 is easily corroded. Meanwhile, 120 ° C
Injecting the cooling gas at a temperature higher than 10 has a small cooling effect and requires introduction of a large amount of gas. Therefore, it was found that the optimum temperature of the cooling gas is 40 to 120 ° C.
By using the cooling gas in such a temperature range, it is possible to maintain the cooling effect in the semi-double structure of the lower part 5 of the reaction chamber, so that the hopper 6, the outer partition wall 7, the mixing chamber 9, As the members for the cooling gas inlet 10 and the suction port 11, ordinary metals such as Inconel, Hastelloy, and stainless steel were used, but there was no particular problem.
【００１７】（実施例２）実施例１と基本的に同一の装
置、同一の原料溶液を用い、反応室下部の混合室の構造
を図２、図３、表２のように変えて、反応室内のガスの
乱れ、混合室下部温度への影響を調べた。なお、図２で
は、内側隔壁（ホッパー）６の外側に、外側隔壁２１を
反応室２に外挿して混合室２２とした。図３は、噴霧熱
分解装置１の反応室２の下部をそのまま混合室３１と
し、その最下部側部中心部に冷却用ガス注入口１０を吸
引口１１と対向して設けた状況を示す。その条件、結果
を表２に示す。(Embodiment 2) Basically the same equipment and the same raw material solution as in Embodiment 1 were used, and the structure of the mixing chamber at the lower part of the reaction chamber was changed as shown in FIGS. The effects of gas turbulence in the room and the temperature on the lower part of the mixing room were investigated. In FIG. 2, the outer partition wall 21 is externally attached to the reaction chamber 2 outside the inner partition wall (hopper) 6 to form a mixing chamber 22. FIG. 3 shows a situation in which the lower part of the reaction chamber 2 of the spray pyrolysis apparatus 1 is used as it is as a mixing chamber 31, and the cooling gas inlet 10 is provided in the center of the lowermost side portion so as to face the suction port 11. The conditions and results are shown in Table 2.
【００１８】[0018]
【表２】 [Table 2]
【００１９】表２の結果を評価するに際し、反応室内の
ガスの乱れがある場合には反応室内に粉体の片寄り付着
が発生するので、その付着の有無で判断した。なお、製
品微粒子の平均粒子径は２μｍであった。表２の結果か
ら、内側隔壁（ホッパー）６の傾斜角が４０〜８０°の
場合に反応室のガスの乱れ、粉体の堆積が殆どないこと
が判明した。また、図３のように、内側隔壁を設けない
構造では、反応室のガスの乱れが大きいことも確認でき
た。In the evaluation of the results shown in Table 2, when the gas in the reaction chamber is disturbed, the powder adheres to the reaction chamber in a biased manner. The average particle size of the product particles was 2 μm. From the results in Table 2, it was found that when the inclination angle of the inner partition wall (hopper) 6 was 40 to 80 °, the gas in the reaction chamber was not disturbed and the powder was hardly deposited. It was also confirmed that, as shown in FIG. 3, in the structure in which the inner partition wall is not provided, the turbulence of the gas in the reaction chamber is large.
【００２０】[0020]
【発明の効果】以上説明したように、本発明の噴霧熱分
解方法および装置によれば、冷却用ガスの導入によって
も反応室のガスの乱れを生じることなく、熱分解後のキ
ャリアガス及び製品微粒子を冷却することができる。ま
た粉体の堆積も殆どなく、連続的に製品微粒子を取り出
す連続運転が可能となる。さらに反応室下部のホッパー
は、冷却用ガスによって冷却されるので、高耐熱性の材
料を使用する必要はなく、通常の金属材料を使用するこ
とができる。As described above, according to the spray pyrolysis method and apparatus of the present invention, the carrier gas and the product after pyrolysis do not cause the gas in the reaction chamber to be disturbed even when the cooling gas is introduced. The fine particles can be cooled. Further, there is almost no accumulation of powder, and continuous operation for taking out product fine particles can be continuously performed. Furthermore, since the hopper in the lower part of the reaction chamber is cooled by the cooling gas, it is not necessary to use a highly heat-resistant material, and an ordinary metal material can be used.
【図１】本発明の噴霧熱分解装置の一例を示す概略断面
図である。FIG. 1 is a schematic sectional view showing an example of a spray pyrolysis apparatus of the present invention.
【図２】反応室下部の構造の一例を示す説明図である。FIG. 2 is an explanatory diagram showing an example of a structure of a lower portion of a reaction chamber.
【図３】反応室下部の構造の他の例を示す説明図であ
る。FIG. 3 is an explanatory diagram showing another example of the structure of the lower portion of the reaction chamber.
１ 噴霧熱分解装置 ２ 反応室 ３ ファーネス ４ 二流体ノズル ５ 反応室の下部 ６ 内側隔壁（ホッパー） ７ 外側隔壁 ８ 粉体取出し口 ９ 混合室 １０ 冷却用ガス注入口 １１ 吸引口 １２ 石英管 １３ 保温部材 １４ 耐火物 １５ 空間 ２１ 外側隔壁 ２２ 混合室 ３１ 混合室 1 Spray Pyrolysis Device 2 Reaction Chamber 3 Furnace 4 Two-fluid Nozzle 5 Lower Part of Reaction Chamber 6 Inner Partition Wall (Hopper) 7 Outer Partition Wall 8 Powder Extraction Port 9 Mixing Chamber 10 Cooling Gas Injection Port 11 Suction Port 12 Quartz Pipe 13 Heat Insulation Member 14 Refractory 15 Space 21 Outer partition wall 22 Mixing chamber 31 Mixing chamber
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 崇 神奈川県横浜市緑区池辺町3847 大川原化 工機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takashi Ito 3847 Ikebe-cho, Midori-ku, Yokohama-shi, Kanagawa Okawara Kakoki Co., Ltd.
Claims (7)
噴霧するとともに、噴霧された原液を反応室内において
固化後熱分解し、得られた粉体を反応室下部より取り出
す噴霧熱分解方法において、反応室下部を半二重構造と
し、冷却用ガスを該半二重構造の隔壁間に導入して、噴
霧熱分解後の固気混合物を間接的に冷却することを特徴
とする噴霧熱分解方法。1. A spray pyrolysis method in which a stock solution is sprayed from the upper part of a vertical reaction chamber into the reaction chamber, and the sprayed stock solution is solidified in the reaction chamber and then pyrolyzed, and the obtained powder is taken out from the lower part of the reaction chamber. In, the lower part of the reaction chamber has a half-duplex structure, and a cooling gas is introduced between the partition walls of the half-duplex structure to indirectly cool the solid-gas mixture after spray pyrolysis. Disassembly method.
ガスである請求項１記載の噴霧熱分解方法。2. The cooling gas is air, N 2 gas or Ar.
The spray pyrolysis method according to claim 1, which is a gas.
請求項１記載の噴霧熱分解方法。3. The spray pyrolysis method according to claim 1, wherein the cooling gas temperature is 40 to 120 ° C.
温度を７０〜２６０℃まで冷却する請求項１記載の噴霧
熱分解方法。4. The spray pyrolysis method according to claim 1, wherein the temperature of the gas entraining the powder is cooled to 70 to 260 ° C. by the cooling gas.
れた噴霧器とを備えた噴霧熱分解装置において、該反応
室の下部を逆円錐台状に形成するとともに半二重構造と
し、反応室下部の外側部に冷却用ガス導入口を設けたこ
とを特徴とする噴霧熱分解装置。5. A spray pyrolysis apparatus comprising a vertical reaction chamber and a sprayer arranged above the reaction chamber, wherein the lower part of the reaction chamber is formed into an inverted truncated cone shape and has a half-duplex structure. A spray pyrolysis apparatus characterized in that a cooling gas inlet is provided on the outer side of the lower part of the reaction chamber.
加熱炉を設けた請求項５の噴霧熱分解装置。6. The spray pyrolysis apparatus according to claim 5, wherein a heating furnace is provided outside the reaction chamber so as to surround the reaction chamber.
取出し口を有する内側隔壁とそれを取り囲む外側隔壁か
らなる請求項５の噴霧熱分解装置。7. The spray pyrolysis apparatus according to claim 5, wherein the half-duplex structure in the lower part of the reaction chamber comprises an inner partition having a powder outlet at the bottom and an outer partition surrounding the inner partition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05147492A JP3201818B2 (en) | 1992-03-10 | 1992-03-10 | Spray pyrolysis method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05147492A JP3201818B2 (en) | 1992-03-10 | 1992-03-10 | Spray pyrolysis method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05253468A true JPH05253468A (en) | 1993-10-05 |
| JP3201818B2 JP3201818B2 (en) | 2001-08-27 |
Family
ID=12887953
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05147492A Expired - Lifetime JP3201818B2 (en) | 1992-03-10 | 1992-03-10 | Spray pyrolysis method and apparatus |
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| Country | Link |
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| JP (1) | JP3201818B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703479B1 (en) | 2001-12-03 | 2004-03-09 | Uop Llc | Process and apparatus for cooling polymer in a reactor |
| JP2006075708A (en) * | 2004-09-09 | 2006-03-23 | Optonix Seimitsu:Kk | Spherical superfine particle and its manufacturing method |
| JP2006077252A (en) * | 2005-09-09 | 2006-03-23 | Optonix Seimitsu:Kk | Ultrafine particle produced by pressurized vibration and injection granulation |
| JP2008246391A (en) * | 2007-03-30 | 2008-10-16 | Japan Fine Ceramics Center | Mist supply apparatus and spray pyrolysis apparatus |
| JP2018143995A (en) * | 2017-03-08 | 2018-09-20 | 太平洋セメント株式会社 | Spray fine particle manufacturing device |
| JP2018143946A (en) * | 2017-03-03 | 2018-09-20 | 太平洋セメント株式会社 | Spray fine particle manufacturing device |
-
1992
- 1992-03-10 JP JP05147492A patent/JP3201818B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703479B1 (en) | 2001-12-03 | 2004-03-09 | Uop Llc | Process and apparatus for cooling polymer in a reactor |
| JP2006075708A (en) * | 2004-09-09 | 2006-03-23 | Optonix Seimitsu:Kk | Spherical superfine particle and its manufacturing method |
| US7771788B2 (en) | 2004-09-09 | 2010-08-10 | Optnics Precision Co., Ltd. | Spherical ultrafine particles and process for producing the same |
| JP2006077252A (en) * | 2005-09-09 | 2006-03-23 | Optonix Seimitsu:Kk | Ultrafine particle produced by pressurized vibration and injection granulation |
| JP2008246391A (en) * | 2007-03-30 | 2008-10-16 | Japan Fine Ceramics Center | Mist supply apparatus and spray pyrolysis apparatus |
| JP2018143946A (en) * | 2017-03-03 | 2018-09-20 | 太平洋セメント株式会社 | Spray fine particle manufacturing device |
| JP2018143995A (en) * | 2017-03-08 | 2018-09-20 | 太平洋セメント株式会社 | Spray fine particle manufacturing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3201818B2 (en) | 2001-08-27 |
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