JPH01236901A - Hot air blowoff device for spray dryer - Google Patents
Hot air blowoff device for spray dryerInfo
- Publication number
- JPH01236901A JPH01236901A JP6003888A JP6003888A JPH01236901A JP H01236901 A JPH01236901 A JP H01236901A JP 6003888 A JP6003888 A JP 6003888A JP 6003888 A JP6003888 A JP 6003888A JP H01236901 A JPH01236901 A JP H01236901A
- Authority
- JP
- Japan
- Prior art keywords
- hot air
- cylindrical member
- duct
- port
- spray dryer
- 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.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract 3
- 238000005192 partition Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は並流式の遠心式又はノズル式噴震乾燥機におけ
る熱風吐出部の構造に係り、殊に熱効率に優れた噴霧乾
燥機の熱風吐出装置に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the structure of a hot air discharge part in a co-current centrifugal type or nozzle type spray dryer, and particularly relates to the structure of a hot air discharge part of a spray dryer with excellent thermal efficiency. This invention relates to a discharge device.
従来より第５図及び第６図に示すように、ホッパ−５０
上部に連続し、た円筒部５１に熱風供給口５２を備えた
渦巻ダクト５３を構成し、該渦巻ダクト５３の熱風吐出
口５４内に遠心式又はノズル式噴霧機５５を設けてなり
、溶液又は懸濁液を微粒状にしで該噴霧機５５から噴出
し、熱風吐出口５４から噴出する熱風に曝して瞬時に乾
燥する並流型の遠心式又はノズル式噴霧乾燥機が使用さ
れている。Conventionally, as shown in FIGS. 5 and 6, the hopper 50
A spiral duct 53 is provided with a hot air supply port 52 in a cylindrical portion 51 continuous to the upper part, and a centrifugal or nozzle type sprayer 55 is provided in the hot air discharge port 54 of the spiral duct 53. A co-current type centrifugal or nozzle type spray dryer is used in which the suspension is made into fine particles, which are ejected from the sprayer 55, and then exposed to hot air ejected from the hot air outlet 54 for instant drying.
しかし、この種の噴＄１乾燥機では、噴霧時における噴
霧液滴と熱風の接触が必すしも完全に行なわれないため
、熱損失が大きく効率が低いものであった。However, in this type of $1 spray dryer, the spray droplets do not necessarily come into perfect contact with the hot air during atomization, resulting in large heat loss and low efficiency.
本発明は上記問題に鑑みてなされたもので、熱効率に優
れると共に乾燥した粉粒体の壁面への付着が少ない噴霧
乾燥機の熱風吐出装置１ｔを提供することを目的とする
ものである。The present invention has been made in view of the above problems, and an object of the present invention is to provide a hot air discharge device 1t for a spray dryer that has excellent thermal efficiency and less adhesion of dried powder to the wall surface.
〔＋（１題を解決するための手段〕 即ち本発明に係る噴１１乾燥機の熱風吐出装置は。[＋(Means for solving one problem)] That is, the hot air discharge device of the jet 11 dryer according to the present invention is as follows.
乾燥機本体のＦ部に熱風供給口を備えた渦巻ダクトを構
成し、該渦巻ダクトの中心部に風域調節用ダンパーを備
えた熱風吐出口を開口すると共に、該熱風熱風吐出口内
に遠心式又はノズル式噴霧機を構成した噴１１蛇燥機に
おへ）で、熱風吐出口を前記噴霧器の周りに同心状に突
設した円筒部材によって上記１１Ａ巻ダクトの下端に構
成すると共に、該円筒部材の開口端を上記噴霧機の噴霧
部の高さ位置まで降下してなり、１該円筒部材のト端部
内面に軸方向に延びる多数の整流板を放射方向に突設し
。A spiral duct equipped with a hot air supply port is formed in the F part of the dryer body, and a hot air discharge port equipped with a damper for adjusting the air range is opened in the center of the spiral duct, and a centrifugal type is installed in the hot air hot air discharge port. Alternatively, the hot air discharge port is formed at the lower end of the 11A winding duct by a cylindrical member protruding concentrically around the sprayer, and the cylindrical The opening end of the member is lowered to the height of the spraying section of the sprayer, and a large number of rectifying plates extending in the axial direction are provided protruding in the radial direction on the inner surface of the top end of the cylindrical member.
該円筒部材のヒ部に上記渦巻ダクトの熱風吐出し１に連
続する旋回流加速筒状室を構成することを要旨とするも
のである。また各整流板は放射方向に対して左右４５度
の範囲内で傾倒した構造に構成することもできる。The gist is that a swirling flow accelerating cylindrical chamber that is continuous with the hot air discharge 1 of the swirl duct is formed in the hollow part of the cylindrical member. Further, each rectifying plate may be configured to be tilted within a range of 45 degrees left and right with respect to the radiation direction.
従って、噴霧乾燥機の噴霧機から溶油又は懸濁液を微粒
状にして噴出される被乾燥液滴は、渦巻ダク１−を介し
て熱風吐出［］に連結構成した円筒部材を経由して噴霧
機の噴霧部位置で吐出される熱風と曝する。然るに該円
筒部材の下端にはその内面に多数の！ａ流板が放射方向
に突設してあり、そりト部に旋回流加速筒状室が形成さ
れるため、渦巻ダクトから旋回流加速筒状室に侵入した
熱風は核部で高速の旋回流を形成して乱流成分が消失す
る。この旋回流は整流板によって更に乱流成分を除去し
、吐出方向を規制した高速整流に成り、噴霧機から噴出
する液滴はこの熱風に曝して瞬時に乾燥するもので、旋
回流加速筒状室と整流板の作用によって高速熱風の乱流
成分を排除し、吐出方向を制御しているため、被乾燥噴
霧液滴と確実に交錯曝して瞬時に熱交換し、効率よく乾
燥することができると共に、被乾燥処理粉粒体の壁面付
着をμ■止するようになる。Therefore, the droplets to be dried, which are ejected from the atomizer of the spray dryer in the form of fine particles of dissolved oil or suspension, are passed through the cylindrical member connected to the hot air discharge [] via the swirl duct 1-. Exposure to hot air discharged at the atomizing part of the atomizer. However, at the lower end of the cylindrical member, there are many ! a) The flow plates protrude in the radial direction, and a swirling flow accelerating cylindrical chamber is formed in the sled section, so the hot air that enters the swirling flow accelerating cylindrical chamber from the swirl duct is converted into a high-speed swirling flow at the core. is formed and the turbulent component disappears. This swirling flow further removes turbulence components using a rectifier plate, and becomes a high-speed rectification with the discharge direction regulated.The droplets ejected from the sprayer are exposed to this hot air and are instantly dried. The turbulent components of the high-speed hot air are eliminated by the action of the chamber and the rectifying plate, and the discharge direction is controlled, so that the droplets are reliably intersected with the sprayed droplets to be dried, allowing instant heat exchange and efficient drying. At the same time, adhesion of the powder and granules to be dried to the wall surface is prevented.
以下、本発明の一実施例を第１図乃至第４図に従って説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
本実施例は遠心式噴霧乾燥機に実施したものであり、第
１図は乾燥機頂部の一部切欠した縦断面図、第２図は同
一部切欠した平面図である。This embodiment was implemented in a centrifugal spray dryer, and FIG. 1 is a partially cutaway vertical sectional view of the top of the dryer, and FIG. 2 is a partially cutaway plan view of the top of the dryer.
図面の乾燥機は乾燥室１の天井部に渦巻ダクト２を構成
したもので、該渦巻ダクト２は乾燥室天井板３の上面に
固設した渦巻状の外板４と内板５及びｈ板３′によって
構成され、一端に熱風供給［］６を開口してなる。また
符号７は該渦巻ダクト２の軸心に位置して乾燥室１の端
板８に固設した公知の遠心噴霧機であり、回転軸の下端
に対して円錐台型の噴−回転盤９が回動自在に軸設して
あり、回転軸ト端に設けたプーリ１０と図示しない回転
駆動装ｈ′ｔを回動連結し、該噴震回転盤９を高速度で
回ｌ１ｌＩノせしめ、供給口から導入した被乾燥液を該
噴霧回転盤９）′、に落下せしめ、遠心噴霧する構造に
なる。上記渦巻ダクト２の内周部には放射方向に傾倒し
た多数の仕切板１１．１１・・・の各先端に径方向の通
風路１２の開口量を開閉調節する）虱破調節用ダンパー
１３がそれぞれ揺動自在（矢印Ｂ）に枢設され、外部操
作機構（図示せず）によって各風量調節用ダンパー１３
を同時開閉駆動する構造になる。The dryer shown in the drawing has a spiral duct 2 on the ceiling of a drying chamber 1, and the spiral duct 2 consists of a spiral outer panel 4, an inner panel 5, and an h-plate fixed to the top surface of the drying chamber ceiling panel 3. 3', with a hot air supply [] 6 opened at one end. Reference numeral 7 designates a known centrifugal sprayer located at the axis of the spiral duct 2 and fixed to the end plate 8 of the drying chamber 1. is rotatably installed on a shaft, and a pulley 10 provided at the end of the rotating shaft is rotatably connected to a rotational drive device (not shown), and the eruption rotary disk 9 is rotated at a high speed. The liquid to be dried introduced from the supply port is allowed to fall onto the spray rotary plate 9)', and is centrifugally sprayed. On the inner periphery of the spiral duct 2, a damper 13 for adjusting the radial opening (opening/closing the opening amount of the ventilation passage 12 in the radial direction) is installed at each tip of a large number of partition plates 11, 11, etc. tilted in the radial direction. Each damper 13 is pivotally installed to be able to swing freely (arrow B), and each air volume adjustment damper 13 is operated by an external operating mechanism (not shown).
It has a structure that opens and closes at the same time.
本発明の熱風吐出装置１４は上記渦巻ダクト２の熱風吐
出部に付加構成するものである。符号１５は渦巻ダクト
２において、遠心噴ｖＩｊ器７と仕切板１１．１１・・
・間の環状吐出部の一側に開設した透孔１５に対して、
遠心噴霧機７と同心状になるように突設した円筒部材で
あり、該円筒部材１６を１−記噴樽回転盤９の高さ位置
まで懸垂すると共に、下部円筒部材１６の下部約３分の
１の長さに亘ってその内面に、多数の整流板１７．１７
・・を放射方向に突設すると共に、そのＦ部の遠心噴霧
機７との間に旋回流加速筒状室１８を形成して成る。該
各整流板１７は噴霧回転盤９の回転軸と平行か又は、第
４図に二点鎖線で示す（矢印Ｃ）ように、放射方向に対
して左右４５度の範囲内で円周方向に傾斜突設した構造
になっており、渦巻ダクト２に供給され該渦巻ダクト２
から旋回流加速筒状室１８に侵入する際、その通路が急
速に狭小して高速旋回流を発生する。この高速旋回流に
よって乱流成分が排除された温風は更に′＠流抜板１７
１７・・・の作用によって方向を整えた下方向の高速風
流を生じ、熱風吐出口１９から吐出すると共に、回転し
ている噴霧回転盤９の斜向外周面に衝突する構造になる
。The hot air discharge device 14 of the present invention is added to the hot air discharge section of the swirl duct 2. Reference numeral 15 indicates the centrifugal jet vIj device 7 and the partition plates 11, 11, . . . in the spiral duct 2.
・For the through hole 15 opened on one side of the annular discharge part between,
It is a cylindrical member that protrudes concentrically with the centrifugal sprayer 7, and the cylindrical member 16 is suspended up to the height of the spout barrel rotary disk 9, and approximately three minutes below the lower cylindrical member 16 is suspended. A number of rectifying plates 17.17 are provided on the inner surface over the length of
... are provided to protrude in the radial direction, and a swirling flow accelerating cylindrical chamber 18 is formed between the F section and the centrifugal sprayer 7. Each rectifier plate 17 is parallel to the rotation axis of the spray rotary plate 9, or is aligned in the circumferential direction within a range of 45 degrees left and right with respect to the radial direction, as shown by the two-dot chain line in FIG. 4 (arrow C). It has an inclined projecting structure, and is supplied to the spiral duct 2.
When entering the swirling flow accelerating cylindrical chamber 18, the passage rapidly narrows to generate a high-speed swirling flow. The hot air from which turbulence components have been removed by this high-speed swirling flow is further
17... generates a downward high-speed wind flow with an adjusted direction, which is discharged from the hot air discharge port 19 and collides with the diagonal outer circumferential surface of the rotating spray rotary disk 9.
従って渦巻ダクト２の熱風供給口６から供給した熱風が
熱風吐出口１９から吐出する際、遠心噴霧機７の噴霧回
転盤９によって拡散される被乾燥噴霧液滴と全体に亘っ
て確実に交錯し、瞬時に熱交換して乾燥することができ
る。Therefore, when the hot air supplied from the hot air supply port 6 of the swirl duct 2 is discharged from the hot air discharge port 19, it is ensured that the hot air intersects with the spray droplets to be dried spread by the spray rotary disk 9 of the centrifugal sprayer 7 over the entire area. , can be dried by instant heat exchange.
尚、前記実施例は本発明を遠心式噴１１乾燥機に実施し
たものを示したが、本発明の熱風吐出装置ζ９１４は乾
燥機の熱風吐出部に付加構成する構造になるため、ノズ
ル式噴霧乾燥機においても同様に実施することができる
ことはいうまでもない。Although the above embodiment shows the present invention implemented in a centrifugal spray 11 dryer, since the hot air discharge device ζ914 of the present invention has a structure that is added to the hot air discharge section of the dryer, nozzle type spraying is possible. It goes without saying that the same method can be applied to a dryer.
以ヒ述べたように本発明に係る哨％１乾燥機の熱風吐出
装置は、遠心式噴１１乾燥機及びノズル式噴霧乾燥機に
おいて実施することができ、噴霧機によって拡散される
被乾燥噴霧液滴と確実に交錯せしめて熱効率を向−ヒす
ることができると共に、被乾燥処理粉粒体の壁面付着を
阻止することができる等の特徴を有するものであり、本
発明実施後の実用的効果は極めて大きい。As described below, the hot air discharging device of the spray dryer according to the present invention can be implemented in a centrifugal spray dryer and a nozzle spray dryer, and the sprayed liquid to be dried that is diffused by the spray machine It has features such as being able to reliably intersect with droplets to improve thermal efficiency, and also being able to prevent the powder and granules to be dried from adhering to the wall surface, and has practical effects after implementing the present invention. is extremely large.
第１図は本発明に係る噴震乾燥機の熱風吐出装置を遠心
式噴霧乾燥機に実施した一実施例を示す乾燥機頂部の一
部切欠した縦断面図、第２図は同一部切欠した平面図、
第３図は熱風吐出装置の縦断面図、第４図は同平面図、
第５図は従来の噴−乾燥機を示す縦断面図、第６図は第
５図におけるＡ−Ａ線断面図である。
１・・乾燥室 ２・・・渦巻ダクト６・・熱
風供給口 ７・・・遠心噴霧機９・・噴霧回転盤
１１・・・仕切板１３・・・風域調節用ダンパー
１４・・・熱風吐出装置 １６・・・円筒部材１７・
・・整流板 １８・・・旋回流加速筒状室？
１斗・・・熱風吐出口
代理人 弁理士 畠 山 隆（
第１図
第３図
第５図Fig. 1 is a partially cutaway vertical sectional view of the top of the dryer showing an embodiment of a centrifugal spray dryer in which the hot air discharge device of the squirt dryer according to the present invention is implemented, and Fig. 2 is a partially cutaway view of the top of the dryer. Plan view,
Figure 3 is a longitudinal cross-sectional view of the hot air discharge device, Figure 4 is a plan view of the same,
FIG. 5 is a longitudinal sectional view showing a conventional spray dryer, and FIG. 6 is a sectional view taken along line A--A in FIG. 1... Drying room 2... Whirlpool duct 6... Hot air supply port 7... Centrifugal sprayer 9... Spray rotary disk 11... Partition plate 13... Damper for wind range adjustment 14... Hot air Discharge device 16... Cylindrical member 17.
...straightening plate 18...swirling flow acceleration cylindrical chamber? 1. Hot air outlet agent Takashi Hatakeyama (Figure 1, Figure 3, Figure 5)
Claims (2)
トを構成し、該渦巻ダクトの中心部に風量調節用ダンパ
ーを備えた熱風吐出口を開口すると共に、該熱風熱風吐
出口内に遠心式又はノズル式噴霧機を構成した噴霧乾燥
機において、熱風吐出口を前記噴霧器の周りに同心状に
突設した円筒部材によって上記渦巻ダクトの下端に構成
すると共に、該円筒部材の開口端を上記噴霧機の噴霧部
の高さ位置まで降下してなり、該円筒部材の下端部内面
に軸方向に延びる多数の整流板を放射方向に突設し、該
円筒部材の上部に上記渦巻ダクトの熱風吐出口に連続す
る旋回流加速筒状室を構成して成る噴霧乾燥機の熱風吐
出装置。(1) Construct a spiral duct equipped with a hot air supply port at the top of the dryer main body, open a hot air discharge port equipped with an air volume adjustment damper in the center of the spiral duct, and provide a centrifugal air flow inside the hot air hot air discharge port. In the spray dryer configured as a type or nozzle type sprayer, a hot air outlet is configured at the lower end of the swirl duct by a cylindrical member protruding concentrically around the sprayer, and the open end of the cylindrical member is connected to the cylindrical member. A number of baffle plates extending in the axial direction are provided on the inner surface of the lower end of the cylindrical member, which descends to the height of the spraying section of the sprayer, and protrude in the radial direction. A hot air discharge device for a spray dryer comprising a swirl flow accelerating cylindrical chamber continuous to a discharge port.
で傾倒した構造になる請求項１記載の噴霧乾燥機の熱風
吐出装置。(2) The hot air discharge device for a spray dryer according to claim 1, wherein each rectifier plate is tilted within a range of 45 degrees left and right with respect to the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6003888A JPH01236901A (en) | 1988-03-14 | 1988-03-14 | Hot air blowoff device for spray dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6003888A JPH01236901A (en) | 1988-03-14 | 1988-03-14 | Hot air blowoff device for spray dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01236901A true JPH01236901A (en) | 1989-09-21 |
Family
ID=13130503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6003888A Pending JPH01236901A (en) | 1988-03-14 | 1988-03-14 | Hot air blowoff device for spray dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01236901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553276A (en) * | 2011-12-08 | 2012-07-11 | 钟元龙 | Drying and dust removal combined tower |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072251A (en) * | 1973-10-29 | 1975-06-14 | ||
| JPS61174901A (en) * | 1985-01-22 | 1986-08-06 | コンバツシヨン・エンヂニアリング・インコーポレーテツド | Apparatus for introducing process gas into treatment chamber |
-
1988
- 1988-03-14 JP JP6003888A patent/JPH01236901A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072251A (en) * | 1973-10-29 | 1975-06-14 | ||
| JPS61174901A (en) * | 1985-01-22 | 1986-08-06 | コンバツシヨン・エンヂニアリング・インコーポレーテツド | Apparatus for introducing process gas into treatment chamber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553276A (en) * | 2011-12-08 | 2012-07-11 | 钟元龙 | Drying and dust removal combined tower |
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