JPS6232392B2 - - Google Patents
Info
- Publication number
- JPS6232392B2 JPS6232392B2 JP57155873A JP15587382A JPS6232392B2 JP S6232392 B2 JPS6232392 B2 JP S6232392B2 JP 57155873 A JP57155873 A JP 57155873A JP 15587382 A JP15587382 A JP 15587382A JP S6232392 B2 JPS6232392 B2 JP S6232392B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- combustion gas
- air
- opening
- roasting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Description
【発明の詳細な説明】
この発明は金属塩化物の水溶液を焙焼する炉の
燃焼ガス吹出ノズル部に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion gas blowing nozzle section of a furnace for roasting an aqueous solution of metal chlorides.
金属塩化物の水溶液を焙焼する炉とは、金属塩
化物の水溶液を炉頂部より噴霧状に落下させ、第
１図に示すように、該炉Ａの横断面円形の極く短
い割線ｍ−ｍ方向に取付けられた燃焼室Ｂから出
て炉壁に沿つて旋回する高温ガスに接しさせて熱
分解を起させ、金属酸化物と塩化水素を含むガス
体とし、通常0.1〜1.0mmの顆粒状粉体となつたも
のは炉底に落下させ、炉底に取付けられているフ
イーダーにより炉外に取出すもので、なお微細な
金属酸化物を含すガス体は炉上部より誘引ブロワ
ーで排出し、微細な金属酸化物を除去した後、塩
化水素を水に吸収して塩酸として回収するもので
ある。 A furnace for roasting an aqueous solution of a metal chloride is one in which the aqueous solution of a metal chloride is dropped from the top of the furnace in the form of a spray, and as shown in FIG. The granules are brought into contact with high-temperature gas that comes out of the combustion chamber B installed in the m direction and swirls along the furnace wall to cause thermal decomposition, resulting in a gaseous body containing metal oxides and hydrogen chloride, usually granules of 0.1 to 1.0 mm. The powdered material is dropped to the bottom of the furnace and taken out of the furnace by a feeder attached to the bottom of the furnace.The gas containing fine metal oxides is discharged from the top of the furnace using an induced blower. After removing fine metal oxides, hydrogen chloride is absorbed into water and recovered as hydrochloric acid.
この場合、従来、炉内で生成された金属酸化物
例えばFe2O3、Mn2O3等の一部は、不完全焙焼の
ため未反応塩化物を残して炉壁に到達してここに
附着したり、或は燃焼室出口の高温部で焼結され
て該出口に附着し、堆積して厚さが増し、この出
口の形状の変化は高温ガス流の正常な方向を偏寄
させ、そのため炉内の温度分布が変化し、焙焼炉
の微妙な運転条件に変化を来したり、又堆積した
ものが自重により不定期に前記顆粒状粉体と混つ
て炉底に落下したりした。そしてこの炉壁に附着
した酸化物は団塊状で粉砕し難く、時には炉壁の
耐火材と結合した形で落下し、フイーター以降の
排出系を詰らせたり、金属酸化物製品に不純物が
混入して不良品にしたり、又止むを得ず運転を停
止し、上記の排出系の詰りを開通させる時は、前
記不良品と共に製品までも廃棄することとなり、
金属酸化物の回収率が低下し、生産能率を悪化さ
せる等の欠点があつた。 In this case, conventionally, some of the metal oxides such as Fe 2 O 3 and Mn 2 O 3 generated in the furnace reach the furnace wall and leave behind unreacted chlorides due to incomplete roasting. or sintered at the high-temperature part of the combustion chamber outlet and deposited on the outlet, increasing its thickness, and this change in the shape of the outlet biases the normal direction of the hot gas flow. As a result, the temperature distribution inside the furnace changes, causing changes in the delicate operating conditions of the roasting furnace, and the accumulated material mixes with the granular powder irregularly due to its own weight and falls to the bottom of the furnace. did. The oxides adhering to the furnace walls are in the form of nodules and difficult to crush, and sometimes fall together with the refractory material on the furnace walls, clogging the exhaust system after the feeder or contaminating metal oxide products with impurities. If the above-mentioned discharge system is clogged and the above-mentioned discharge system is unblocked due to unavoidable operation, the product must be disposed of along with the defective product.
There were drawbacks such as a decrease in the recovery rate of metal oxides and a deterioration in production efficiency.
この発明は叙上の欠点を除去できた金属塩化物
の水溶液を焙焼する炉の燃焼ガス吹出ノズル部を
提供するのをその目的とする。 An object of the present invention is to provide a combustion gas blowing nozzle section for a furnace for roasting an aqueous solution of metal chloride, which can eliminate the above-mentioned drawbacks.
この発明に係る金属塩化物の水溶液を焙焼する
炉の燃焼ガス吹出ノズル部の構成を、第２図に示
す一実施例に基づいて詳細に説明すると、焙焼炉
Ａの横断面円形の内壁１に該円形に極く短い割線
ｍ−ｍの方向に設けられている燃焼ガス吹出ノズ
ル２の開口部３の外周に、該開口部３から吹出さ
れる燃焼ガスの周囲を空気膜４で包囲できるよう
に空気吹出口５を設けたものである。 The structure of the combustion gas blowing nozzle part of the furnace for roasting an aqueous solution of metal chlorides according to the present invention will be explained in detail based on an embodiment shown in FIG. 2.The inner wall of the roasting furnace A has a circular cross section. 1, an air film 4 surrounds the combustion gas blown out from the opening 3 on the outer periphery of the opening 3 of the combustion gas blowing nozzle 2 provided in the direction of the very short dividing line m-m in the circular shape. An air outlet 5 is provided to allow the air to flow freely.
なお、第２図に示す実施例において、Ｂは燃焼
室を示し、ガス又は灯油が空気の供給を受けて燃
焼し、スロート部６で所定の流速に加速されるよ
うにし、吹出ノズル２より円形炉壁の極く短い割
線ｍ−ｍの方向に吹出すようにし、空気は燃焼用
空気の一部を該スロート部６を中心にして環状に
設けたヘツダー７に導き、該ヘツダーに、数多、
略等ピツチに設けた分岐管８の他端を、前記燃焼
ガス吹出ノズル２の開口部３を取巻くように炉壁
に導き、空気吹出口５として開口させたもので、
なお数多の空気吹出口５は炉内の一点で収斂する
ように設けるとよい。なお又第２図（い）中、９
は点検口を示す。 In the embodiment shown in FIG. 2, B indicates a combustion chamber in which gas or kerosene is combusted by air supply, and is accelerated to a predetermined flow velocity at the throat part 6. The air is blown out in the direction of the very short dividing line m-m on the furnace wall, and a part of the combustion air is guided to a header 7 provided in an annular shape around the throat part 6, and a number of air ,
The other ends of branch pipes 8 provided at approximately equal pitches are guided to the furnace wall so as to surround the openings 3 of the combustion gas blow-off nozzles 2, and are opened as air blow-off ports 5.
It is preferable that the large number of air outlets 5 be provided so as to converge at one point within the furnace. Furthermore, in Figure 2 (i), 9
indicates an inspection port.
この実施例は叙上のような構成を有するから燃
焼ガス吹出ノズル２より吹出した燃焼ガスの周囲
には、該吹出ノズル２の開口部３の外周を取巻い
て設けられている空気吹出口５より吹出す空気に
より空気膜が形成され而も該吹出ノズル２は横断
面円形の炉壁１の極く短い割線ｍ−ｍ方向に吹出
されるので直ちに炉壁１に沿つて旋回流となり、
空気吹出口５の開口部３の周囲には空気膜が形成
されて温度が低くなつているので、開口部３に酸
化物及び未反応塩化物が焼結することなく、又燃
焼ガス吹出ノズル付近の炉壁に到達した金属酸化
物は空気流で吹飛ばされ且つ燃焼ガス吹出ノズル
出口は空気で冷却されるので溶融して吹出ノズル
付近の炉壁に付着することも殆んどなく、若干付
着堆積しても、該壁面温度が低いので、付着成長
した堆積物は燃焼ガス流の方向に影響を与えない
ある一定の大きさになると壁面より離脱する。 Since this embodiment has the above-mentioned configuration, the combustion gas blown out from the combustion gas blow-off nozzle 2 is surrounded by an air blow-off port 5 provided around the outer periphery of the opening 3 of the blow-off nozzle 2. An air film is formed by the air blown out, and since the blowing nozzle 2 blows out in the direction of the extremely short dividing line m-m of the furnace wall 1, which has a circular cross section, a swirling flow immediately follows the furnace wall 1.
Since an air film is formed around the opening 3 of the air outlet 5 and the temperature is low, oxides and unreacted chlorides are not sintered in the opening 3, and the vicinity of the combustion gas blowing nozzle is prevented from being sintered. The metal oxides that have reached the furnace wall are blown away by the air flow, and the outlet of the combustion gas blow-off nozzle is cooled by air, so they hardly melt and stick to the furnace wall near the blow-off nozzle, and only a little sticks. Even if the deposits are deposited, since the temperature of the wall surface is low, the deposits that have grown will separate from the wall surface when they reach a certain size that will not affect the direction of the combustion gas flow.
なお、上記の作用は空気膜が一点に収斂するよ
うに構成しているので一層確実に行われる。 It should be noted that the above-mentioned action is performed more reliably since the air film is configured to converge to one point.
なお、第３図に示すものは他の実施例で、燃焼
用空気の一部は、吹出ノズル２を中心として環状
に設けた空気通路１０に導き、該空気通路より吹
出ノズル２の開口部３に向つて形成した円錐状の
通路１１を通つて該開口部３の周囲より吹出さ
せ、吹出ノズル２より吹出す高温ガスの周囲を空
気膜で包囲するようにしたものである。 Note that the one shown in FIG. 3 is another embodiment in which a part of the combustion air is guided to an air passage 10 provided in an annular shape around the blow-off nozzle 2, and from the air passage to the opening 3 of the blow-off nozzle 2. The high-temperature gas is blown out from around the opening 3 through a conical passage 11 formed toward the air, and the high-temperature gas blown out from the blow-off nozzle 2 is surrounded by an air film.
この発明は叙上のような構成作用を有するの
で、未反応塩化物及び酸化物が燃焼ガス吹出ノズ
ル２の開口部３に附着し高温ガス流の正常な方向
を偏寄させることがないので炉内の温度分布が狂
うことなく運転条件は常に一定にでき、品位の一
定した優良な製品が得られ又排出系に詰りを生じ
ることがないので安定した操業が長時間継続して
行える等顕著な効果がある。 Since this invention has the above-mentioned configuration, unreacted chlorides and oxides do not adhere to the opening 3 of the combustion gas blowing nozzle 2 and bias the normal direction of the high-temperature gas flow. The operating conditions can be kept constant without changing the internal temperature distribution, producing high-quality products with consistent quality, and the discharge system will not be clogged, allowing stable operation for long periods of time. effective.
第１図は従来の金属塩化物の水溶液を焙焼する
炉の燃焼ガス吹出ノズルの横断平面図、第２図
（い）はこの発明にかゝる金属塩化物の水溶液を
焙焼する炉の燃焼ガス吹出ノズル部の横断平面
図、第２図（ろ）は燃焼ガス吹出ノズルの開口部
の正面図、第２図（は）はその側面図、第３図
（い）は他の実施例の吹出ノズル部の縦断正面
図、第３図（ろ）はその側面図を夫々示し、Ａは
焙焼炉、１は内壁、２は燃焼ガス吹出ノズル、３
は開口部、５は空気吹出口を夫々示す。
Figure 1 is a cross-sectional plan view of a combustion gas blowing nozzle of a conventional furnace for roasting an aqueous solution of metal chlorides, and Figure 2 (a) is a cross-sectional plan view of a furnace for roasting an aqueous solution of metal chlorides according to the present invention. A cross-sectional plan view of the combustion gas blow-off nozzle section, FIG. 2 (b) is a front view of the opening of the combustion gas blow-off nozzle, FIG. 2 (b) is a side view thereof, and FIG. 3 (b) is another embodiment. FIG. 3(B) is a longitudinal sectional front view of the blow-off nozzle part, and FIG.
5 indicates an opening, and 5 indicates an air outlet.
Claims (1)
く短い割線ｍ−ｍの方向に設けられている燃焼ガ
ス吹出ノズル２の開口部３の外周に、該開口部３
から吹出される燃焼ガスの周囲を空気膜で包囲し
て冷却できるように空気吹出口５を一点に収斂す
るように設けたことを特徴とする、金属塩化物の
水溶液を焙焼する炉の燃焼ガス吹出ノズル部。1. On the outer periphery of the opening 3 of the combustion gas blowing nozzle 2 provided on the inner wall 1 of the roasting furnace A having a circular cross section in the direction of the very short dividing line m-m of the circular shape, the opening 3 is installed.
A combustion furnace for roasting an aqueous solution of a metal chloride, characterized in that the air outlet 5 is provided so as to converge to one point so that the combustion gas blown out from the combustion gas can be surrounded by an air film and cooled. Gas blowing nozzle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15587382A JPS5946478A (en) | 1982-09-09 | 1982-09-09 | Blow-off nozzle section for combustion gas from furnace in which aqueous solution of metallic chloride is roasted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15587382A JPS5946478A (en) | 1982-09-09 | 1982-09-09 | Blow-off nozzle section for combustion gas from furnace in which aqueous solution of metallic chloride is roasted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5946478A JPS5946478A (en) | 1984-03-15 |
| JPS6232392B2 true JPS6232392B2 (en) | 1987-07-14 |
Family
ID=15615365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15587382A Granted JPS5946478A (en) | 1982-09-09 | 1982-09-09 | Blow-off nozzle section for combustion gas from furnace in which aqueous solution of metallic chloride is roasted |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946478A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238608B2 (en) * | 1973-03-05 | 1977-09-30 |
-
1982
- 1982-09-09 JP JP15587382A patent/JPS5946478A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5946478A (en) | 1984-03-15 |
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