TW201516365A

TW201516365A - Powder producing apparatus

Info

Publication number: TW201516365A
Application number: TW102147483A
Authority: TW
Inventors: Kenichi Tomozawa; Yuuki Hayashi
Original assignee: Chugai Ro Kogyo Kaisha Ltd
Priority date: 2013-10-16
Filing date: 2013-12-20
Publication date: 2015-05-01
Also published as: JP5735607B2; CN104549040B; KR20150044358A; CN104549040A; JP2015077545A; KR101574002B1; TWI522591B

Abstract

The present invention provides a powder producing apparatus which is possible to prevent the combustion exhaust gas flowing within a vertical furnace from deflecting and uniformly heat the particles of the raw powder material flowing down within the furnace in an airborne state. Each of the raw material ejecting nozzles 4a constituting a first row of raw material ejecting nozzles 44 is arranged at an equal pitch angle. Each of the raw material ejecting nozzles 4b constituting a second row of raw material ejecting nozzles 46 are arranged at an equal pitch angle smaller than that of the raw material ejecting nozzles 4a constituting the first row of raw material ejecting nozzles 44. The first row of raw material ejecting nozzles 44 and the second row of raw material ejecting nozzles 46 are arranged so as to shift from each other by a half-pitch angle so that a clearance between the nozzles is formed as a passage of the combustion exhaust gas.

Description

粉體製造裝置 Powder manufacturing device

發明領域 Field of invention

本發明是有關於一種粉體製造裝置。 The present invention relates to a powder manufacturing apparatus.

發明背景 Background of the invention

進行原料粉體之高溫燒成、氣球化處理、或球狀化處理之加熱方法，已知的有在一定容量之容器填充粉體且以電爐或窯爐加熱之靜置型加熱方法、將原料粉體直接投射到高溫之燃燒排氣中，並在高溫之處理空間將原料粉體加熱之浮遊型加熱方法。 A heating method for performing high-temperature baking, ballooning treatment, or spheroidization treatment of a raw material powder, and a stationary heating method in which a powder having a predetermined capacity is filled with a powder and heated in an electric furnace or a kiln, and a raw material powder is known. The floating type heating method in which the body is directly projected into the high-temperature combustion exhaust gas and the raw material powder is heated in the high-temperature processing space.

採用靜置型加熱方法之裝置的其中一例是，在填充有粉體且稱為匣鉢(saggar)之陶瓷製容器載置於輥子上，以該輥子搬送匣鉢並加熱到預定之溫度之輥道窯(roller hearth kiln)為公知(例如參照專利文獻1。)。 An example of a device using a static type heating method is a roller container in which a ceramic container filled with a powder and called a saggar is placed on a roller, and the roller is conveyed and heated to a predetermined temperature. A kiln (roller hearth kiln) is known (for example, refer to Patent Document 1).

又，採用浮遊型加熱方法之裝置之其中一例，公知的是粉體製造裝置，其是由下述所構成：內部形成處理空間之縱型爐、於燃燒室之一端具有燃燒器，將在前述燃燒室產生之燃燒排氣通過縱型爐之上部導入本體內之燃燒裝置、及垂直向下地配置於位於前述縱型爐之上部之上端的爐頂部，並且將原料噴出到該縱型爐內之原料噴出噴嘴 (例如參照專利文獻2。)。 Further, an example of a device using a floating type heating method is a powder manufacturing apparatus which is constituted by a vertical furnace in which a processing space is formed inside, and a burner at one end of the combustion chamber, which will be described above. The combustion exhaust gas generated by the combustion chamber is introduced into the combustion device in the body through the upper portion of the vertical furnace, and is placed vertically downward on the top of the furnace at the upper end of the upper portion of the vertical furnace, and the raw material is sprayed into the vertical furnace. Raw material ejection nozzle (For example, refer to Patent Document 2.).

在該粉體製造裝置之縱型爐的上部，燃燒室之他端連接於對縱型爐之長邊方向之軸心直交之方向，使導入至縱型爐內之燃燒排氣之流向變化90度然後將該燃燒排氣導入本體內之下游側。 In the upper portion of the vertical furnace of the powder manufacturing apparatus, the other end of the combustion chamber is connected to the direction orthogonal to the axial direction of the longitudinal direction of the vertical furnace, so that the flow direction of the combustion exhaust gas introduced into the vertical furnace is changed 90 The combustion exhaust gas is then introduced into the downstream side of the body.

先行技術文獻 Advanced technical literature 專利文獻 Patent literature

【專利文獻1】日本實用新型登錄第3173374號公報 [Patent Document 1] Japanese Utility Model Registration No. 3173374

【專利文獻2】日本專利特開2012-35237號公報 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2012-35237

發明概要 Summary of invention

專利文獻1由於是加熱熱容量大之陶瓷製匣鉢內的原料粉體，因此到匣鉢內之原料粉體成為均一加熱溫度為止需要約30分鐘~數小時之加熱時間。又，陶瓷製匣鉢進行急遽的加熱‧冷卻時，會產生因表面與內部之熱膨脹差造成之應力破裂(熱環剝離(thermal spalling))。因此，必須緩慢地加熱‧冷卻，結果處理時間變長。不管是任一者，專利文獻1中，具有運轉成本變高的問題。除此之外，也擔心爐內之耐火材等的不純物混入匣鉢內。 In Patent Document 1, since the raw material powder in the ceramic crucible having a large heat capacity is heated, it takes about 30 minutes to several hours for the raw material powder in the crucible to reach a uniform heating temperature. Further, the ceramic crucible is subjected to rapid heating and ‧ cooling causes stress cracking (thermal spalling) due to a difference in thermal expansion between the surface and the inside. Therefore, it is necessary to slowly heat and cool, and as a result, the processing time becomes long. In any case, Patent Document 1 has a problem that the running cost is high. In addition to this, it is also feared that impurities such as refractory materials in the furnace are mixed into the crucible.

專利文獻2由於各個原料粒子分散到高溫的處理空間內而加熱，因此原料粉體之加熱時間為數秒，相較於專利文獻1所記載之加熱方法變得非常短。又，專利文獻2 是將原料粉體在浮遊狀態進行處理，因此原料粉體與爐內之耐火材的接觸少，也不會如專利文獻1擔心有不純物混入。 In Patent Document 2, since each raw material particle is heated by being dispersed in a high-temperature processing space, the heating time of the raw material powder is several seconds, and the heating method described in Patent Document 1 is extremely short. Also, Patent Document 2 Since the raw material powder is treated in a floating state, the contact between the raw material powder and the refractory material in the furnace is small, and there is no fear that the impurities are mixed in Patent Document 1.

相反地，專利文獻2在例如隨著縱型爐之擴大而爐的容積變大時，其構造上、容易在流通於縱型爐內之燃燒排氣產生偏流，難以將在浮遊狀態落下到爐內之原料粉體的粒子均一地加熱，而有粉體之熱歷程不會均一的問題點。 On the other hand, in the patent document 2, for example, as the volume of the furnace increases as the vertical furnace expands, it is structurally easy to cause a bias flow in the combustion exhaust gas flowing through the vertical furnace, and it is difficult to drop the floating state to the furnace. The particles of the raw material powder are uniformly heated, and there is a problem that the thermal history of the powder is not uniform.

又，具有如下問題：高溫之處理空間內的溫度分布不均一，且會因為原料粉體之粒子通過高溫之處理空間中的哪個場所而各個粒子受到的熱歷程變得不均一。 Further, there is a problem in that the temperature distribution in the processing space at a high temperature is not uniform, and the heat history of the respective particles is not uniform because the particles of the raw material powder pass through the high-temperature processing space.

因此，本發明之第1目的是提供一種抑制運轉成本，且抑制流通於縱型爐內之燃燒排氣之偏流，而可將在浮遊狀態下落下到爐內之原料粉體之粒子均一地加熱之粉體製造裝置。又，本發明之其他目的可提供一種可將粉體投射到粉體之熱歷程會均一之處理空間之粉體製造裝置。 Accordingly, a first object of the present invention is to provide a method for suppressing the running cost and suppressing the drift of the combustion exhaust gas flowing through the vertical furnace, and uniformly heating the particles of the raw material powder falling into the furnace in a floating state. Powder manufacturing device. Further, another object of the present invention is to provide a powder producing apparatus which can project a powder into a processing space in which the thermal history of the powder is uniform.

本發明之粉體製造裝置之特徵在於由下述構成：縱型爐，在內部形成處理空間；燃燒裝置，在燃燒室之一端具有燃燒器，並且將在前述燃燒室產生之燃燒排氣通過前述縱型爐之上部而導入本體內；及原料噴出噴嘴，垂直向下配置於位於前述縱型爐之上部之上端的爐頂部，並且將原料噴出到該縱型爐內，前述燃燒室之他端在對前述縱型爐之長邊方向之軸心直交之方向上連接於前述縱型爐之上部，前述原料噴出噴嘴由前述爐頂部到上部空間內均一地配置複數個，且配置在對形成於前述上部之前述燃燒排氣之噴出口之軸心直交之方向，進而，前述原料噴出噴嘴中***到前述縱型爐之內部之***長度具有前述噴出口之開口長度以上的長度，使從前述噴出口導入至前述縱型爐內之前述燃燒排氣流入鄰接之原料噴出噴嘴間之間隙，並且使該燃燒排氣之流向變化而導至前述縱型爐內之下游側。 The powder producing apparatus of the present invention is characterized in that it is constituted by a vertical furnace which forms a processing space therein, a combustion apparatus having a burner at one end of the combustion chamber, and a combustion exhaust gas generated in the combustion chamber through the aforementioned The upper part of the vertical furnace is introduced into the body; and the raw material discharge nozzle is vertically disposed downward on the top of the furnace located at the upper end of the upper portion of the vertical furnace, and the raw material is sprayed into the vertical furnace, the other end of the combustion chamber Connected to the aforementioned vertical furnace in a direction orthogonal to the axial direction of the longitudinal direction of the vertical furnace In the upper portion, the raw material discharge nozzles are uniformly disposed in the upper portion from the furnace top to the upper space, and are disposed in a direction orthogonal to the axial center of the discharge port of the combustion exhaust gas formed in the upper portion, and further, in the raw material discharge nozzle The insertion length inserted into the inside of the vertical furnace has a length equal to or longer than the opening length of the discharge port, and the combustion exhaust gas introduced into the vertical furnace from the discharge port flows into a gap between the adjacent raw material discharge nozzles, and The flow of the combustion exhaust gas is changed to the downstream side in the vertical furnace.

根據該構成，由於使燃燒排氣流入從爐頂部到上部空間內均一地配置複數個且鄰接之原料噴出噴嘴間之間隙，並且將燃燒排氣導引至縱型爐內之下游側，因此複數個原料噴出噴嘴發揮作為整流手段的功能。因此，可均一地加熱在浮遊狀態下落下到爐內之原料粉體之粒子。又，即使隨著縱型爐之擴大而爐之容積變大，也可使粉體之熱歷程均一。 According to this configuration, since the combustion exhaust gas flows into the gap between the plurality of adjacent raw material discharge nozzles uniformly from the top of the furnace to the upper space, and the combustion exhaust gas is guided to the downstream side in the vertical furnace, the plural The raw material discharge nozzle functions as a rectifying means. Therefore, the particles of the raw material powder falling down into the furnace in a floating state can be uniformly heated. Further, even if the volume of the furnace becomes larger as the vertical furnace expands, the thermal history of the powder can be made uniform.

配置於前述爐頂部之複數原料噴出噴嘴在同軸上至少配列1列以上之由預定數目之前述原料噴出噴嘴構成之環狀原料噴出噴嘴列，在同列上鄰接之前述原料噴出噴嘴之傾斜角相等且在相對之列中以錯開半傾斜角的方式配列。 a plurality of raw material discharge nozzles disposed on the top of the furnace, at least one or more rows of annular material discharge nozzle rows formed of a predetermined number of the raw material discharge nozzles arranged coaxially, and the inclination angles of the raw material discharge nozzles adjacent to each other in the same row are equal Arranged in a relative column with a staggered half-tilt angle.

根據該構成，由於燃燒排氣均等地流入構成複數個原料噴出噴嘴列之各原料噴出噴嘴所形成之間隙，因此在配置有複數個原料噴出噴嘴之爐內空間，燃燒排氣可整流。 According to this configuration, since the combustion exhaust gas uniformly flows into the gap formed by the respective material discharge nozzles constituting the plurality of material discharge nozzle rows, the combustion exhaust gas can be rectified in the furnace space in which the plurality of material discharge nozzles are disposed.

令就在由前述噴出口流入前述複數原料噴出噴嘴前之前述燃燒排氣的壓力為P1，令通過前述複數原料噴出噴嘴後之前述燃燒排氣的壓力為P2時，將前述鄰接之原料噴出噴嘴間之間隙設定為前述燃燒排氣之差壓P1-P2為5mmH₂O到30mmH₂O。 The pressure of the combustion exhaust gas before flowing into the plurality of raw material discharge nozzles from the discharge port is P1, and when the pressure of the combustion exhaust gas after passing through the plurality of raw material discharge nozzles is P2, the adjacent raw material discharge nozzles are used. The gap between the two is set to be 5 mmH ₂ O to 30 mmH ₂ O.

前述噴出口與前述上部之接合部分中之內緣下部進行倒角。根據該構成，減少了在噴出口之角部之附近產生之渦流，結果燃燒排氣之速度分布會變得略均等，提高燃燒排氣之整流效果。 The lower portion of the inner edge of the joint portion of the discharge port and the upper portion is chamfered. According to this configuration, the eddy current generated in the vicinity of the corner portion of the discharge port is reduced, and as a result, the velocity distribution of the combustion exhaust gas is slightly equalized, and the rectifying effect of the combustion exhaust gas is improved.

施行前述倒角之區域是使前述內緣下部之中央部較大，並隨著前述內緣下部之兩端而縮小。根據該構成，通過噴出口之燃燒排氣的速度是噴出口之內緣下部之中央部較快，隨著接近與縱型爐內之壁面接合之前述噴出口之兩端角部而速度漸漸降低，因此若使流速較快之中央部之倒角較大，更為減輕在其處發生之渦流，結果燃燒排氣之速度分布會變均等，更為提高燃燒排氣之整流效果。 The region where the chamfering is performed is such that the central portion of the lower portion of the inner edge is larger and is reduced in accordance with both ends of the lower portion of the inner edge. According to this configuration, the speed of the combustion exhaust gas passing through the discharge port is such that the central portion of the lower portion of the inner edge of the discharge port is faster, and the velocity gradually decreases as approaching the corner portions of the discharge ports that are joined to the wall surface of the vertical furnace. Therefore, if the chamfering of the central portion having a relatively high flow velocity is made larger, the eddy current generated therein is further reduced, and as a result, the velocity distribution of the combustion exhaust gas becomes uniform, and the rectifying effect of the combustion exhaust gas is further improved.

令前述原料噴出噴嘴之下端到從前述鄰接之原料噴出噴嘴噴出之噴流的交差部之距離為L，令鄰接之原料噴出噴嘴之中心間距離為P，令原料噴出噴嘴之噴嘴孔徑為d，令原料噴出噴嘴噴出之原料之噴流角度為θ時，各自之關係滿足L={(P-d)/2}/(tanθ/2)[mm]，前述距離L之位置中之原料的溫度是設定由在原料為乾燥粉體時為不凝聚之溫度以上、原料為漿狀之粉體時為液體之沸點以上構成之前述P。 The distance from the lower end of the raw material discharge nozzle to the intersection of the jets ejected from the adjacent raw material discharge nozzles is L, so that the distance between the centers of the adjacent raw material discharge nozzles is P, and the nozzle aperture of the raw material discharge nozzle is d, When the jet flow angle of the raw material ejected from the raw material discharge nozzle is θ, the relationship satisfies L={(Pd)/2}/(tan θ/2) [mm], and the temperature of the raw material in the position of the distance L is set by When the raw material is a dry powder, it is a temperature which is not higher than the temperature at which the temperature is not aggregated, and when the raw material is a slurry, the above-mentioned P is formed at a boiling point or more of the liquid.

根據該構成，在縱型爐之處理空間之中，可使原料粉體之粒子通過促進高溫燒成、氣球化處理、或球狀化處理之高溫的區域。其結果是，原料粉體之各個粒子受到的熱歷程可均一。 According to this configuration, in the processing space of the vertical furnace, the particles of the raw material powder can pass through a high-temperature region that promotes high-temperature firing, ballooning treatment, or spheroidization treatment. As a result, the heat history of each particle of the raw material powder can be uniform.

根據本發明，可提供一種抑制運轉成本，並且抑制流通於縱型爐內之燃燒排氣的偏流，可均一地加熱在浮遊狀態下落下到爐內之原料粉體之粒子之粉體製造裝置。進而，可發揮可提供一種將粉體投射到粉體之熱歷程變均一之處理空間之粉體製造裝置的效果。 According to the present invention, it is possible to provide a powder producing apparatus which can suppress the running cost and suppress the drift of the combustion exhaust gas flowing through the vertical furnace, and can uniformly heat the particles of the raw material powder which have fallen to the furnace in the floating state. Further, it is possible to provide an effect of providing a powder producing apparatus which can project a powder into a processing space in which the heat history of the powder becomes uniform.

1‧‧‧粉體製造裝置 1‧‧‧ powder manufacturing equipment

2‧‧‧縱型爐 2‧‧‧ vertical furnace

3‧‧‧燃燒裝置 3‧‧‧ burning device

4,4a,4b‧‧‧原料噴出噴嘴 4,4a,4b‧‧‧Material ejection nozzle

13A‧‧‧都市氣體 13A‧‧‧Urban Gas

20‧‧‧爐頂部 20‧‧‧ furnace top

22‧‧‧上部 22‧‧‧ upper

24‧‧‧本體部 24‧‧‧ Body Department

26‧‧‧隔熱材 26‧‧‧Insulation

28‧‧‧處理空間 28‧‧‧Processing space

30‧‧‧隔熱材 30‧‧‧Insulation

32‧‧‧燃燒室 32‧‧‧ combustion chamber

34‧‧‧燃燒器 34‧‧‧ burner

36‧‧‧噴出口 36‧‧‧Spray outlet

40‧‧‧長軸噴嘴 40‧‧‧Long shaft nozzle

42‧‧‧突緣 42‧‧‧Front

44‧‧‧第1原料噴出噴嘴列 44‧‧‧1st material ejection nozzle column

46‧‧‧第2原料噴出噴嘴列 46‧‧‧Second material ejection nozzle column

200‧‧‧中心 200‧‧‧ Center

260‧‧‧壁面 260‧‧‧ wall

280‧‧‧原料噴出噴嘴之下端附近區域 280‧‧‧The area near the lower end of the material ejection nozzle

282‧‧‧縱型爐內中央部之區域 282‧‧‧The area in the central part of the vertical furnace

300‧‧‧燃燒排氣 300‧‧‧burning exhaust

360‧‧‧內緣下部 360‧‧‧Lower rim

362‧‧‧倒角部 362‧‧‧Chamfering

364‧‧‧中央部 364‧‧‧Central Department

366‧‧‧兩端 366‧‧‧ both ends

400‧‧‧陶瓷纖維 400‧‧‧Ceramic fiber

402‧‧‧金屬製環 402‧‧‧Metal ring

404‧‧‧底面 404‧‧‧ bottom

406‧‧‧陶瓷纖維 406‧‧‧Ceramic fiber

408‧‧‧金屬製環 408‧‧‧Metal ring

422‧‧‧肋部 422‧‧‧ ribs

480‧‧‧噴流 480‧‧‧ jet

482‧‧‧交錯部 482‧‧‧Interlaced Department

L‧‧‧距離 L‧‧‧ distance

P‧‧‧距離 P‧‧‧ distance

d‧‧‧噴嘴孔徑 D‧‧‧Nozzle aperture

θ‧‧‧噴流角度 θ ‧‧‧jet angle

H1‧‧‧***長度 H1‧‧‧ insertion length

H2‧‧‧開口長度 H2‧‧‧ opening length

圖1(a)為本發明之實施形態之粉體製造裝置的側截面圖、(b)是顯示噴出口之倒角形狀之平面圖。 Fig. 1 (a) is a side sectional view showing a powder manufacturing apparatus according to an embodiment of the present invention, and Fig. 1 (b) is a plan view showing a chamfered shape of the discharge port.

圖2(a)為原料噴出噴嘴之截面圖、(b)是顯示將下端之陶瓷纖維做成大徑之原料噴出噴嘴之圖。 Fig. 2(a) is a cross-sectional view showing a raw material discharge nozzle, and Fig. 2(b) is a view showing a raw material discharge nozzle having a ceramic fiber having a large diameter at a lower end.

圖3是由圖1(a)之A方向觀看之縱型爐之爐頂部的平面圖。 Figure 3 is a plan view of the top of the furnace of the vertical furnace viewed from the direction A of Figure 1 (a).

圖4是圖1(a)之縱型爐之B-B截面圖。 Figure 4 is a cross-sectional view taken along line B-B of the vertical furnace of Figure 1 (a).

圖5(a)是模擬在形成於縱型爐內之燃燒排氣之噴出口的角部未施行倒角時之原料噴出噴嘴之下端附近之燃燒排氣之速度分布圖，(b)是模擬於噴出口之角部施行倒角時之原料噴出噴嘴之下端附近之燃燒排氣之速度分布圖。 Fig. 5(a) is a graph showing the velocity distribution of the combustion exhaust gas near the lower end of the raw material discharge nozzle when the corner portion of the discharge port of the combustion exhaust gas formed in the vertical furnace is not chamfered, and (b) is a simulation A velocity profile of the combustion exhaust gas near the lower end of the material discharge nozzle when the chamfering is performed at the corner of the discharge port.

圖6(a)是模擬形成於縱型爐內之燃燒排氣之噴出口的角部未施行倒角時之縱型爐內中央部之燃燒排氣的速度分布圖，(b)是模擬於噴出口之角部施行倒角時之縱型爐內中央部之燃燒排氣的速度分布圖。 Fig. 6 (a) is a graph showing the velocity of combustion exhaust gas in the center portion of the vertical furnace when the corner portion of the discharge port of the combustion exhaust gas formed in the vertical furnace is not chamfered. The layout (b) is a velocity distribution map of the combustion exhaust gas in the center portion of the vertical furnace when the corner portion of the discharge port is chamfered.

圖7是說明由原料噴出噴嘴之下端到由鄰接之原料噴出噴嘴噴出之噴流之交錯部為止之距離L的概略圖。(a)是顯示比較例，(b)是顯示本發明例。 Fig. 7 is a schematic view for explaining a distance L from the lower end of the raw material discharge nozzle to the interlaced portion of the jet flow ejected from the adjacent raw material discharge nozzle. (a) shows a comparative example, and (b) shows an example of the present invention.

較佳實施例之詳細說明 Detailed description of the preferred embodiment

以下、依據附圖說明本發明之第1實施形態之粉體製造裝置。再者，以下的說明中，為了方便使用表示方向或位置之用語(例如、「一端」或「他端」、「上游」或「下游」等)，但該等是為了容易理解本發明，本發明之技術的範圍並不受該等用語之意思而限定。又，以下之說明不過是例示本發明之一形態，並非是意圖用來限制本發明之該適用物或其用途。 Hereinafter, a powder producing apparatus according to a first embodiment of the present invention will be described with reference to the drawings. In the following description, in order to facilitate the use of the term indicating direction or position (for example, "one end" or "other end", "upstream" or "downstream", etc.), these are for easy understanding of the present invention. The scope of the technology of the invention is not limited by the meaning of such terms. In addition, the following description is merely an exemplification of the present invention, and is not intended to limit the application of the present invention or its use.

如圖1(a)所示，粉體製造裝置1具有：直立圓筒狀之縱型爐2、横型圓筒狀之燃燒裝置3、及垂直向下地配置於縱型爐2之爐頂部20，且將原料噴出到該縱型爐內2之原料噴出噴嘴4。 As shown in Fig. 1(a), the powder manufacturing apparatus 1 includes an upright cylindrical vertical furnace 2, a horizontal cylindrical combustion apparatus 3, and a furnace top 20 disposed vertically downward in the vertical furnace 2. The raw material is discharged to the raw material discharge nozzle 4 in the vertical furnace 2.

縱型爐2具有：位於上部22之上端之爐頂部20、及由上部22擴徑成圓錐狀之本體部24。縱型爐2內有隔熱材26為內襯，於內部形成有用以將原料粉體高溫燒成、氣球化處理、或球狀化處理之處理空間28。 The vertical furnace 2 has a furnace top portion 20 at the upper end of the upper portion 22, and a body portion 24 which is expanded in a conical shape by the upper portion 22. In the vertical furnace 2, a heat insulating material 26 is provided as an inner liner, and a processing space 28 for high-temperature baking, ballooning, or spheroidizing of the raw material powder is formed inside.

如圖1所示，燃燒裝置3具有內襯有隔熱材30之燃燒室32。燃燒室32於一端具有燃燒器34於他端縮徑成圓錐狀。如圖所示，燃燒室32之他端朝對縱型爐2之長邊方向之軸心直交之方向連接於上部22。在上部22之壁面260形成有噴出口36(參照圖1(b))，並且經由該噴出口36而連通縱型爐2內與燃燒室32。 As shown in FIG. 1, the combustion apparatus 3 has a combustion chamber 32 lined with a heat insulating material 30. The combustion chamber 32 has a burner 34 at one end and is reduced in diameter to a cone at the other end. shape. As shown, the other end of the combustion chamber 32 is connected to the upper portion 22 in a direction orthogonal to the axis of the longitudinal direction of the vertical furnace 2. A discharge port 36 (see FIG. 1(b)) is formed in the wall surface 260 of the upper portion 22, and the inside of the vertical furnace 2 and the combustion chamber 32 are communicated via the discharge port 36.

由燃燒器34生成之燃燒生成氣體成為與從設置於燃燒室32之外周部之空氣供給口38流入之空氣混合而調整成適當溫度之高溫之燃燒排氣300，並經由噴出口36而導入縱型爐2內，導至本體部24內之下游側。 The combustion-generating gas generated by the burner 34 is a combustion exhaust gas 300 that is mixed with air flowing in from the air supply port 38 provided on the outer peripheral portion of the combustion chamber 32 and adjusted to an appropriate temperature, and is introduced into the vertical through the discharge port 36. The inside of the furnace 2 is guided to the downstream side in the body portion 24.

燃燒器34宜為可以任意之空氣比將例如都市氣體13A、丙烷氣體、或丁烷氣體等之氣體燃料與燃燒用空氣燃燒。燃料除了氣體燃料之外，亦可為液體燃料、固體燃料之任一者。 Preferably, the burner 34 is capable of burning a gaseous fuel such as an atmospheric gas 13A, a propane gas, or a butane gas with combustion air at an arbitrary air ratio. The fuel may be any one of a liquid fuel and a solid fuel in addition to the gaseous fuel.

本實施形態中，雖然將在燃燒器34所生成之燃燒生成氣體混合了空氣之燃燒排氣300導入縱型爐2內，但不限於此，亦可將在可以燃料之理論燃燒空氣量之例如1．05~8倍之過剩的燃燒用空氣量燃燒之燃燒器所生成之燃燒生成氣體直接導入縱型爐2內。藉使用如此之燃燒器，可簡化燃燒裝置3之構造。 In the present embodiment, the combustion exhaust gas 300 in which the combustion-generating gas generated by the burner 34 is mixed with air is introduced into the vertical furnace 2, but the present invention is not limited thereto, and for example, the amount of theoretical combustion air of the fuel may be used. The combustion-generating gas generated by the burner of 1.05 to 8 times excess combustion air amount is directly introduced into the vertical furnace 2. By using such a burner, the construction of the combustion device 3 can be simplified.

如圖2所示，原料噴出噴嘴4具有乾燥狀態之原料粉體、或漿狀之原料粉體在內部流通之長軸噴嘴40。矩形之突緣42貫通設置於長軸噴嘴40之一端側(上端側)。 As shown in Fig. 2, the raw material discharge nozzle 4 has a raw material powder in a dry state or a long-axis nozzle 40 in which a slurry-like raw material powder flows inside. The rectangular flange 42 is provided to be provided on one end side (upper end side) of the long-axis nozzle 40.

又，在突緣42之下面側且長軸噴嘴40外周部，在圓周方向上等間隔(例如90°)地固定設置肋部422。以該肋部422固定長軸噴嘴40之外周部與突緣42之下面，藉此可防止長軸噴嘴40之撓曲。 Further, on the lower surface side of the flange 42 and the outer peripheral portion of the long-axis nozzle 40, the rib portion 422 is fixed at equal intervals (for example, 90°) in the circumferential direction. The outer peripheral portion of the long-axis nozzle 40 and the lower surface of the flange 42 are fixed by the rib 422, thereby preventing The deflection of the long axis nozzle 40.

長軸噴嘴40之他端側(下端側)之外周部外裝有圓錐梯形之陶瓷纖維400。圓錐梯形之陶瓷纖維400藉由設置於長軸噴嘴40之他端側(下端側)之附近之2個金屬製環402而防止脫落。 The outer peripheral portion (lower end side) of the long-axis nozzle 40 is provided with a conical trapezoidal ceramic fiber 400 outside the periphery. The conical trapezoidal ceramic fiber 400 is prevented from falling off by two metal rings 402 provided in the vicinity of the other end side (lower end side) of the long-axis nozzle 40.

在突緣42之下面到圓錐梯形之陶瓷纖維400之底面404之區域，與底面404之直徑大略相等之外徑且具有預定厚度之甜甜圈狀之陶瓷纖維406在厚度方向上積層有多數。該等陶瓷纖維406藉預定間隔設置於長軸噴嘴40之外周部之金屬製環408防止自體重量造成之鬆脫、脫落。 In the region from the lower surface of the flange 42 to the bottom surface 404 of the conical trapezoidal ceramic fiber 400, the donut-shaped ceramic fiber 406 having an outer diameter substantially equal to the diameter of the bottom surface 404 and having a predetermined thickness is laminated in the thickness direction. The ceramic fibers 406 are placed on the outer circumference of the long-axis nozzle 40 at predetermined intervals to prevent loosening or falling off due to the weight of the body.

如上述構成之原料噴出噴嘴4可將供原料粉體流通之長軸噴嘴40內部之溫度保持在預定溫度。又，由於不需要將長軸噴嘴40之外周部作成供冷卻媒體流通之多重管構成，因此原料噴出噴嘴4之製造變容易。 The material discharge nozzle 4 configured as described above can maintain the temperature inside the long-axis nozzle 40 through which the raw material powder flows, at a predetermined temperature. Further, since it is not necessary to form the outer peripheral portion of the long-axis nozzle 40 as a multi-tube structure through which the cooling medium flows, the production of the raw material discharge nozzle 4 becomes easy.

其次，就配置於縱型爐2之爐頂部20之原料噴出噴嘴4加以說明。如圖1(a)、圖3、及圖4所示，爐頂部20設有從中心200呈放射狀設置合計24支之原料噴出噴嘴4a，4b。 Next, the raw material discharge nozzle 4 disposed in the furnace top 20 of the vertical furnace 2 will be described. As shown in Fig. 1 (a), Fig. 3, and Fig. 4, the furnace top portion 20 is provided with a total of 24 raw material discharge nozzles 4a, 4b radially provided from the center 200.

合計24支之原料噴出噴嘴4配置成從爐頂部20到上部22之空間內均一之放射狀。複數個原料噴出噴嘴4之配置若是可從爐頂部20均一地配置於上部22之空間內則不限定於放射狀。亦可將複數個原料噴出噴嘴4配置成例如格子狀、網眼狀。再者，若配置成放射狀，雖然亦可於中心200配置原料噴出噴嘴4，但由於如此會顯示出中心200附近之燃燒排氣之流速不均一的傾向，因此如圖3所示，宜於中心200不配置原料噴出噴嘴4。 A total of 24 raw material discharge nozzles 4 are arranged to be uniformly radiated from the space of the furnace top 20 to the upper portion 22. The arrangement of the plurality of material discharge nozzles 4 is not limited to a radial shape if it is uniformly disposed in the space of the upper portion 22 from the furnace top portion 20. A plurality of material discharge nozzles 4 may be arranged, for example, in a lattice shape or a mesh shape. Further, if it is arranged in a radial shape, the material discharge nozzle 4 may be disposed in the center 200, but this will show the vicinity of the center 200. Since the flow rate of the combustion exhaust gas tends to be non-uniform, as shown in FIG. 3, it is preferable that the material discharge nozzle 4 is not disposed at the center 200.

如圖4所示，原料噴出噴嘴4配置於對噴出口36之軸心直交之方向。如圖示，原料噴出噴嘴4a，4b中***至縱型爐2之內部之***長度H1具有噴出口36之開口長度H2以上之長度。在此，所謂「***長度」是表示從爐頂部20之底面到原料噴出噴嘴4之下端之尺寸，所謂「噴出口36之開口長度」，意指噴出口36之開口形狀為例如矩形時，為爐頂部20之底面到長邊或短邊之下端之尺寸，噴出口36之開口形狀為例如圓形時，意指爐頂部20之底面到圓之下端之尺寸。 As shown in FIG. 4, the raw material discharge nozzle 4 is disposed in a direction orthogonal to the axis of the discharge port 36. As shown in the figure, the insertion length H1 of the raw material discharge nozzles 4a, 4b inserted into the inside of the vertical furnace 2 has a length equal to or longer than the opening length H2 of the discharge port 36. Here, the "insertion length" means the size from the bottom surface of the furnace top 20 to the lower end of the material discharge nozzle 4, and the "opening length of the discharge port 36" means that the opening shape of the discharge port 36 is, for example, a rectangular shape. The size of the bottom surface of the furnace top 20 to the lower end or the lower end of the short side, and the shape of the opening of the discharge port 36 is, for example, a circle, means the size of the bottom surface of the furnace top 20 to the lower end of the circle.

回到圖3，於爐頂部20，相對中心200配列有由8支之原料噴出噴嘴4a構成之環狀第1原料噴出噴嘴列44，並且在第1原料噴出噴嘴列44之外側，由16支之原料噴出噴嘴4b構成之環狀第2原料噴出噴嘴列46配列在同軸上。 Referring back to Fig. 3, in the top portion 20 of the furnace, an annular first material discharge nozzle row 44 composed of eight raw material discharge nozzles 4a is arranged in the center portion 20, and 16 sides are provided on the outer side of the first material discharge nozzle row 44. The annular second material discharge nozzle row 46 formed of the material discharge nozzles 4b is arranged coaxially.

又，構成第1原料噴出噴嘴列44之各原料噴出噴嘴4a分別以相等之傾斜角配列。構成第2原料噴出噴嘴列46之各原料噴出噴嘴4b以比構成第1原料噴出噴嘴列44之各原料噴出噴嘴4a小之傾斜角配列。如圖示，第1原料噴出噴嘴列44與第2原料噴出噴嘴列46在相對之列中呈錯開半傾斜角的方式配列，並將由各原料噴出噴嘴4a與各原料噴出噴嘴4b形成之間隙形成燃燒排氣之通路(未圖示)。 Further, the respective material discharge nozzles 4a constituting the first material discharge nozzle row 44 are arranged at equal inclination angles. Each of the raw material discharge nozzles 4b constituting the second raw material discharge nozzle row 46 is arranged at a smaller inclination angle than each of the raw material discharge nozzles 4a constituting the first raw material discharge nozzle row 44. As shown in the figure, the first raw material discharge nozzle row 44 and the second raw material discharge nozzle row 46 are arranged at a half-inclination angle in a row, and a gap formed between each of the raw material discharge nozzles 4a and each of the raw material discharge nozzles 4b is formed. A path for burning exhaust gas (not shown).

因此，燃燒排氣均等地流入各原料噴出噴嘴4a與各原料噴出噴嘴4b形成之間隙，因此在配置有複數之原料噴出噴嘴之爐內空間，燃燒排氣會整流。 Therefore, since the combustion exhaust gas uniformly flows into the gap formed between each of the raw material discharge nozzles 4a and the respective raw material discharge nozzles 4b, the plural is disposed. The material in the furnace is sprayed out of the nozzle, and the combustion exhaust gas is rectified.

本發明之第1實施形態之粉體製造裝置1由於如上述所構成，因此構成第1、2之原料噴出噴嘴列44，46之各原料噴出噴嘴4a，4b所形成之間隙發揮燃燒排氣之整流手段的功能，結果可將為浮遊狀態落下到縱型爐2內之原料粉體之粒子均一地加熱。又，即使是隨著縱型爐2之擴大而爐的容積變大，也可將粉體之熱歷程均一。 Since the powder production apparatus 1 of the first embodiment of the present invention is configured as described above, the gap formed by each of the material discharge nozzles 4a and 4b constituting the first and second material discharge nozzle rows 44 and 46 serves as combustion exhaust gas. The function of the rectifying means can uniformly heat the particles of the raw material powder falling into the vertical furnace 2 in a floating state. Further, even if the volume of the furnace is increased as the vertical furnace 2 is enlarged, the thermal history of the powder can be made uniform.

再者，本實施形態中，是以將24支之原料噴出噴嘴4配置於爐頂部20之例作說明，但不在此限。可因應於粉體製造裝置1之處理能力(例如、燃燒排氣300之流量、縱型爐2之容積等)適當地變更配置於爐頂部20之原料噴出噴嘴4之支數，只要可將鄰接之原料噴出噴嘴4之間的間隙形成為燃燒排氣之通路即可。 Further, in the present embodiment, an example in which 24 raw material discharge nozzles 4 are disposed on the furnace top portion 20 will be described, but the present invention is not limited thereto. The number of the raw material discharge nozzles 4 disposed in the furnace top 20 can be appropriately changed in accordance with the processing capability of the powder manufacturing apparatus 1 (for example, the flow rate of the combustion exhaust gas 300, the volume of the vertical furnace 2, etc.) as long as it can be adjacent The gap between the material discharge nozzles 4 may be formed as a passage for burning the exhaust gas.

原料噴出噴嘴4之支數、即鄰接之原料噴出噴嘴4間之間隙的形成可藉以從噴出口36流入複數個原料噴出噴嘴4之前之燃燒排氣300的壓力、及通過複數個原料噴出噴嘴4後(即，複數個原料噴出噴嘴4之下游側)之燃燒排氣300之壓力的差壓為5mmH₂O到30mmH₂0的方式，設定鄰接之原料噴出噴嘴4之間的間隙(參照圖1(a))。 The number of the raw material discharge nozzles 4, that is, the gap between the adjacent raw material discharge nozzles 4, can be formed by the pressure of the combustion exhaust gas 300 before flowing into the plurality of raw material discharge nozzles 4 from the discharge port 36, and through the plurality of raw material discharge nozzles 4 The difference pressure between the pressures of the combustion exhaust gas 300 after the combustion of the plurality of raw material discharge nozzles 4 is 5 mmH ₂ O to 30 mmH ₂ 0, and the gap between the adjacent raw material discharge nozzles 4 is set (refer to FIG. 1). (a)).

當下降到為上述之差壓之下限值之5mmH₂O時，無法得到整流效果。相反的，當上升到上限值之30mmH₂O時，爐壓變高的結果，防止爐氣洩漏到爐外之耐壓密封之構造會複雜化，並且設備全體之成本會變高。如此，若將差壓設定在5mmH₂O到30mmH₂0之範圍內、設備全體可不提高成本，將燃燒排氣300整流。 When it is lowered to 5 mmH ₂ O which is the lower limit of the above-mentioned differential pressure, the rectifying effect cannot be obtained. On the contrary, when the furnace pressure is increased to 30 mmH ₂ O of the upper limit value, the structure of the pressure-resistant seal which prevents the furnace gas from leaking to the outside of the furnace is complicated, and the cost of the entire apparatus becomes high. In this manner, if the differential pressure is set within the range of ₅ mmH ₂ O to 30 mmH ₂ 0, the entire exhaust equipment can be rectified without increasing the cost.

再者，如圖2(b)所示，亦可僅將原料噴出噴嘴4之下端之圓錐梯形之陶瓷纖維400作成大徑，將差壓設定在5mmH₂O到30mmH₂0之範圍內。如此，可提高複數個原料噴出噴嘴4之下端到上游側之空間(與噴出口36對向之空間)之內壓。其結果是，可從鄰接之原料噴出噴嘴4間之間隙使燃燒排氣300均等地流出。 Further, as shown in Fig. 2(b), only the conical trapezoidal ceramic fiber 400 at the lower end of the raw material discharge nozzle 4 may be formed to have a large diameter, and the differential pressure may be set within a range of ₅ mmH ₂ O to 30 mmH ₂ 0 . Thus, the internal pressure of the space from the lower end of the plurality of material discharge nozzles 4 to the upstream side (the space opposed to the discharge port 36) can be increased. As a result, the combustion exhaust gas 300 can be uniformly discharged from the gap between the adjacent raw material discharge nozzles 4.

其次，說明本發明之第2實施形態之粉體製造裝置。如圖1(a)所示，第2實施形態之粉體製造裝置1具有用以將從噴出口36流入縱型爐2內之燃燒排氣300之流向在該縱型爐2內變化90度之彎曲部之內側對向的區域進行倒角之倒角部362。 Next, a powder producing apparatus according to a second embodiment of the present invention will be described. As shown in Fig. 1 (a), the powder producing apparatus 1 of the second embodiment has a flow for changing the combustion exhaust gas 300 flowing from the discharge port 36 into the vertical furnace 2 by 90 degrees in the vertical furnace 2. The chamfered portion 362 is chamfered in the region opposite to the inner side of the curved portion.

詳細說明的話，倒角部362形成於噴出口36與上部22與之接合部分中之內緣下部360。其他構成與第1實施形態所說明之粉體製造裝置1相同，因此省略在此之再次說明。 In detail, the chamfered portion 362 is formed in the inner edge lower portion 360 of the joint portion between the discharge port 36 and the upper portion 22. The other configuration is the same as that of the powder manufacturing apparatus 1 described in the first embodiment, and thus the description thereof will be omitted.

如此，藉由將倒角部362形成於噴出口36與上部22之接合部分中之內緣下部360，可減輕在其區域附近發生之渦流。其結果是，流入縱型爐2內之燃燒排氣300之速度分布會略均等，提高燃燒排氣之整流效果。 As described above, by forming the chamfered portion 362 in the inner edge lower portion 360 of the joint portion between the discharge port 36 and the upper portion 22, the eddy current occurring in the vicinity of the region can be alleviated. As a result, the velocity distribution of the combustion exhaust gas 300 flowing into the vertical furnace 2 is slightly equal, and the rectification effect of the combustion exhaust gas is improved.

如圖1(b)所示，倒角部362中施行倒角之區域使內緣下部360之中央部364較大，並隨著接近該內緣下部360之兩端366而縮小(平面視為新月形)，可更為提高整流效果，故較佳。 As shown in Fig. 1(b), the chamfered portion of the chamfered portion 362 causes the central portion 364 of the inner edge lower portion 360 to be larger and is reduced as approaching the both ends 366 of the inner edge lower portion 360 (the plane is regarded as The crescent shape) can improve the rectification effect, so it is better.

通常、通過噴出口36之內緣下部360之燃燒排氣300的速度是中央部364較快，隨著接近為與縱型爐2內之壁面260接合點之兩端366而漸漸地降低速度，因此若是使流速較快之中央部364之倒角較大，可更為減輕在那裏產生的渦流。其結果是，流入縱型爐2內之燃燒排氣300的速度分布會均等，更為提高燃燒排氣300之整流效果。 Typically, the velocity of the combustion exhaust gas 300 passing through the lower inner portion 360 of the discharge port 36 is faster at the central portion 364, and gradually decreases as it approaches the ends 366 of the point of engagement with the wall surface 260 in the vertical furnace 2, Therefore, if the chamfer of the central portion 364 having a relatively high flow velocity is large, the eddy current generated there can be further alleviated. As a result, the velocity distribution of the combustion exhaust gas 300 flowing into the vertical furnace 2 is equalized, and the rectifying effect of the combustion exhaust gas 300 is further enhanced.

圖5、圖6是顯示將縱型爐2縱切，燃燒排氣300之流量在10000m3N/h、燃燒排氣300之溫度在1200℃之條件下，模擬將在原料噴出噴嘴4之下端附近區域280、及縱型爐2內中央部之區域282之徑方向之流速分布之圖。圖5(a)、圖6(a)是顯示無倒角部362之情況(比較例)，圖5(b)、圖6(b)是顯示有倒角部362之情況(本發明例)。圖中，粗箭頭記號是顯示速度較快之燃燒排氣300之流速分布。 5 and 6 show that the vertical furnace 2 is slit, the flow rate of the combustion exhaust gas 300 is 10000 m3 N/h, and the temperature of the combustion exhaust gas 300 is 1200 ° C, and the simulation is performed in the vicinity of the lower end of the raw material discharge nozzle 4. 280, and a map of the flow velocity distribution in the radial direction of the region 282 of the central portion of the vertical furnace 2. 5(a) and 6(a) show the case where the chamfered portion 362 is not provided (comparative example), and FIGS. 5(b) and 6(b) show the case where the chamfered portion 362 is displayed (example of the present invention) . In the figure, the thick arrow mark is a flow velocity distribution of the combustion exhaust gas 300 showing a faster speed.

如圖5(a)、圖6(a)所示，比較例中，顯示在原料噴出噴嘴4之下端附近區域280、及縱型爐2內中央部之區域282，燃燒排氣300之速度會變快的傾向。 As shown in Fig. 5 (a) and Fig. 6 (a), in the comparative example, the region 280 in the vicinity of the lower end of the raw material discharge nozzle 4 and the region 282 in the central portion of the vertical furnace 2 are displayed, and the speed at which the exhaust gas 300 is burned is The tendency to get faster.

另一方面，如圖5(b)、圖6(b)所示，本發明例之情況是，在原料噴出噴嘴4之下端附近區域280、及縱型爐2內中央部之區域282中，會得到燃燒排氣300之速度略均等之結果。如此，可理解藉具有倒角部362提高燃燒排氣300之整流效果。 On the other hand, as shown in Fig. 5 (b) and Fig. 6 (b), in the case of the present invention, in the region 280 near the lower end of the raw material discharge nozzle 4 and the region 282 in the central portion of the vertical furnace 2, The result is that the speed of the combustion exhaust gas 300 is slightly equal. As such, it can be understood that the rectifying effect of the combustion exhaust gas 300 is enhanced by having the chamfered portion 362.

說明本發明之第3實施形態之粉體製造裝置。如圖7(a)所示，各原料噴出噴嘴4具有由該原料噴出噴嘴4噴出之原料的噴流角度θ。由於各原料噴出噴嘴4接近配置，因此在縱型爐(未圖示)之處理空間28中，一定會形成噴流480交錯之交錯部482。 A powder manufacturing apparatus according to a third embodiment of the present invention will be described. As shown in Fig. 7 (a), each of the raw material discharge nozzles 4 has a jet flow angle θ of the raw material discharged from the raw material discharge nozzle 4. Since each of the raw material ejection nozzles 4 is close to the configuration, In the processing space 28 of the vertical furnace (not shown), the staggered portion 482 in which the jet streams 480 are staggered is formed.

形成交錯部482之處理空間28若為高溫之區域(原料為乾燥粉體的情況則在燒成溫度以上、原料為漿狀之粉體的情況則在液體之沸點以上的區域)，原料粉體可沒問題地進行高溫燒成、氣球化處理、或球狀化處理。 When the processing space 28 in which the interlaced portion 482 is formed is a high-temperature region (in the case where the raw material is a dry powder, the powder is in a slurry-like powder or higher, and the raw material is in a region above the boiling point of the liquid), the raw material powder High-temperature firing, ballooning treatment, or spheroidization treatment can be performed without any problem.

可是，如圖7(a)所示，當鄰接之原料噴出噴嘴4之中心間距離P不適當時，會在促進高溫燒成、氣球化處理、或球狀化處理之處理空間28面前的區域(原料為乾燥粉體時則在燒成溫度以下、原料為漿狀之粉體之情況則在液體之沸點以下之區域)形成交錯部482。在如此之區域形成交錯部482時，原料為乾燥粉體時粉體之粒子會凝聚，由於在粉體緊密附著之內側與外側反應較慢，因此製品會不一樣。又，原料為漿狀之粉體時，液滴會碰撞而成為混有大粒子與小粒子之製品。 However, as shown in Fig. 7(a), when the distance P between the centers of the adjacent material discharge nozzles 4 is not appropriate, the area in front of the processing space 28 for promoting high-temperature firing, ballooning, or spheroidizing treatment ( When the raw material is a dry powder, the staggered portion 482 is formed in a region below the boiling temperature of the powder and in the region below the boiling point of the liquid. When the staggered portion 482 is formed in such a region, when the raw material is a dry powder, the particles of the powder aggregate, and since the inside of the powder adheres to the inside and the outside is slow, the product is different. Further, when the raw material is a slurry powder, the droplets collide and become a product in which large particles and small particles are mixed.

因此，發明人們精心檢討之結果、如圖7(b)所示，令原料噴出噴嘴4之下端到噴流480之交錯部482之距離為L、令鄰接之原料噴出噴嘴4之中心間距離為P、令原料噴出噴嘴4之噴嘴孔徑為d、令由原料噴出噴嘴4噴出之原料之噴流角度為θ時，各自之關係滿足L={(P-d)/2}/(tanθ/2)〔mm〕，並且發現在該距離L之位置之原料的溫度在原料為乾燥粉體時為不凝聚之溫度以上、原料為漿狀之粉體時為液體之沸點以上之原料噴出噴嘴4之中心間距離P。上述之距離L由原料噴出噴嘴4之附近之燃燒排氣300之溫度、流量、爐內壓力等之條件，可從發明人們之實驗、及實驗數據之分析而得到。 Therefore, as a result of careful examination by the inventors, as shown in Fig. 7(b), the distance from the lower end of the material discharge nozzle 4 to the interlaced portion 482 of the jet stream 480 is L, and the distance between the centers of the adjacent material discharge nozzles 4 is P. When the nozzle aperture of the material discharge nozzle 4 is d and the jet flow angle of the material discharged from the material discharge nozzle 4 is θ, the relationship satisfies L={(Pd)/2}/(tan θ/2) [mm]. Further, it is found that the temperature of the raw material at the position of the distance L is a distance between the centers of the raw material discharge nozzles 4 which is equal to or higher than the boiling point of the liquid when the raw material is a dry powder, and the raw material is a slurry having a boiling point or higher. . The distance L described above is the temperature and flow rate of the combustion exhaust gas 300 in the vicinity of the raw material discharge nozzle 4, Conditions such as pressure in the furnace can be obtained from experiments by the inventors and analysis of experimental data.

如此，根據本發明之第3實施形態之粉體製造裝置，可將粉體投射到粉體之熱歷程均一之處理空間28。 As described above, according to the powder producing apparatus of the third embodiment of the present invention, the powder can be projected onto the processing space 28 in which the thermal history of the powder is uniform.

產業上之可利用性 Industrial availability

本發明之粉體製造裝置對於機能材微粉末之熱處理分解或燒成處理、複合酸化物粉末之合成處理、玻璃等之陶瓷粉末之球狀化處理或發泡化處理是有用的。 The powder production apparatus of the present invention is useful for heat treatment decomposition or baking treatment of functional material fine powder, synthesis treatment of composite acid powder, and spheroidization treatment or foaming treatment of ceramic powder such as glass.

1‧‧‧粉體製造裝置 1‧‧‧ powder manufacturing equipment

2‧‧‧縱型爐 2‧‧‧ vertical furnace

3‧‧‧燃燒裝置 3‧‧‧ burning device

4‧‧‧原料噴出噴嘴 4‧‧‧Material ejection nozzle

20‧‧‧爐頂部 20‧‧‧ furnace top

22‧‧‧上部 22‧‧‧ upper

24‧‧‧本體部 24‧‧‧ Body Department

26‧‧‧隔熱材 26‧‧‧Insulation

28‧‧‧處理空間 28‧‧‧Processing space

30‧‧‧隔熱材 30‧‧‧Insulation

32‧‧‧燃燒室 32‧‧‧ combustion chamber

34‧‧‧燃燒器 34‧‧‧ burner

36‧‧‧噴出口 36‧‧‧Spray outlet

38‧‧‧噴出口 38‧‧‧Spray outlet

260‧‧‧壁面 260‧‧‧ wall

300‧‧‧燃燒排氣 300‧‧‧burning exhaust

360‧‧‧內緣下部 360‧‧‧Lower rim

362‧‧‧倒角部 362‧‧‧Chamfering

364‧‧‧中央部 364‧‧‧Central Department

366‧‧‧兩端 366‧‧‧ both ends

Claims

一種粉體製造裝置，其特徵在於由下述構成：縱型爐，在內部形成處理空間；燃燒裝置，在燃燒室之一端具有燃燒器，並且將在前述燃燒室產生之燃燒排氣通過前述縱型爐之上部而導入本體內；及原料噴出噴嘴，垂直向下配置於位於前述縱型爐之上部之上端的爐頂部，並且將原料噴出到該縱型爐內，前述燃燒室之他端在對前述縱型爐之長邊方向之軸心直交之方向上連接於前述縱型爐之上部，前述原料噴出噴嘴由前述爐頂部到上部空間內均一地配置複數個，且配置在對形成於前述上部之前述燃燒排氣之噴出口之軸心直交之方向，進而，前述原料噴出噴嘴中***到前述縱型爐之內部之***長度具有前述噴出口之開口長度以上的長度，使從前述噴出口導入至前述縱型爐內之前述燃燒排氣流入鄰接之原料噴出噴嘴間之間隙，並且使該燃燒排氣之流向變化而導至前述縱型爐內之下游側。 A powder manufacturing apparatus characterized by comprising: a vertical furnace having a processing space formed therein; a combustion device having a burner at one end of the combustion chamber, and passing the combustion exhaust gas generated in the combustion chamber through the longitudinal direction The upper part of the furnace is introduced into the body; and the raw material discharge nozzle is disposed vertically downward on the top of the furnace located at the upper end of the upper portion of the vertical furnace, and the raw material is sprayed into the vertical furnace, and the other end of the combustion chamber is The axial direction of the longitudinal direction of the vertical furnace is connected to the upper portion of the vertical furnace, and the raw material discharge nozzles are uniformly disposed from the top of the furnace to the upper space, and are disposed in the foregoing a direction in which the axis of the discharge port of the combustion exhaust gas is orthogonal to the upper portion, and further, the insertion length of the raw material discharge nozzle inserted into the vertical furnace has a length equal to or longer than the opening length of the discharge port, and the discharge port is opened from the discharge port. The combustion exhaust gas introduced into the vertical furnace flows into a gap between adjacent raw material discharge nozzles, and changes the flow direction of the combustion exhaust gas. To the downstream side of the vertical furnace.

如請求項1之粉體製造裝置，其中配置於前述爐頂部之複數原料噴出噴嘴在同軸上至少配列1列以上之由預定數目之前述原料噴出噴嘴構成之環狀原料噴出噴嘴列，在同列上鄰接之前述原料噴出噴嘴之傾斜角(pitch angle)相等且在相對之列中以錯開半傾斜角的方式配列。 The powder producing apparatus according to claim 1, wherein the plurality of raw material discharge nozzles disposed on the top of the furnace have at least one or more rows of annular raw material discharge nozzles formed of a predetermined number of the raw material discharge nozzles arranged coaxially. The pitch angles of the raw material discharge nozzles adjacent to each other in the same row are equal and are arranged in a staggered half oblique angle in the opposite row.

如請求項1或2之粉體製造裝置，其中令就在由前述噴出口流入前述複數原料噴出噴嘴前之前述燃燒排氣的壓力為P1，令通過前述複數原料噴出噴嘴後之前述燃燒排氣的壓力為P2時，將前述鄰接之原料噴出噴嘴間之間隙設定為前述燃燒排氣之差壓P1-P2為5mmH₂O到30mmH₂O。 The powder producing apparatus according to claim 1 or 2, wherein the pressure of the combustion exhaust gas before flowing into the plurality of raw material discharge nozzles from the discharge port is P1, and the combustion exhaust gas after passing through the plurality of raw material discharge nozzles When the pressure is P2, the gap between the adjacent raw material discharge nozzles is set such that the differential pressure P1-P2 of the combustion exhaust gas is 5 mmH ₂ O to 30 mmH ₂ O.

如請求項1~3中任一項之粉體製造裝置，其中前述噴出口與前述上部之接合部分中之內緣下部進行倒角。 The powder manufacturing apparatus according to any one of claims 1 to 3, wherein a lower portion of the inner edge of the joint portion between the discharge port and the upper portion is chamfered.

如請求項4之粉體製造裝置，其中施行前述倒角之區域是使前述內緣下部之中央部較大，並隨著前述內緣下部之兩端而縮小。 The powder producing apparatus according to claim 4, wherein the chamfering region is formed such that a central portion of the lower portion of the inner edge is larger and narrows along both ends of the lower portion of the inner edge.

如請求項1~5中任一項之粉體製造裝置，其中令前述原料噴出噴嘴之下端到從前述鄰接之原料噴出噴嘴噴出之噴流的交差部之距離為L，令鄰接之原料噴出噴嘴之中心間距離為P，令原料噴出噴嘴之噴嘴孔徑為d，令原料噴出噴嘴噴出之原料之噴流角度為θ時，各自之關係滿足L={(P-d)/2}/(tan θ/2)[mm]，前述距離L之位置中之原料的溫度是設定由在原料為乾燥粉體時為不凝聚之溫度以上、原料為漿狀之粉體時為液體之沸點以上構成之前述P。 The powder manufacturing apparatus according to any one of claims 1 to 5, wherein a distance from a lower end of the raw material discharge nozzle to a jet of the jet discharged from the adjacent raw material discharge nozzle is L, and the adjacent raw material is ejected from the nozzle. The distance between the centers is P, so that the nozzle aperture of the raw material ejection nozzle is d, and when the jet flow angle of the raw material ejected from the raw material ejection nozzle is θ , the relationship satisfies L={(Pd)/2}/(tan θ /2). [mm] The temperature of the raw material in the position of the distance L is the P which is formed by setting the boiling point of the liquid to be higher than the temperature at which the raw material is a dry powder, and the raw material is a slurry.