JPH07190681A - Dust separator - Google Patents
Dust separatorInfo
- Publication number
- JPH07190681A JPH07190681A JP33570293A JP33570293A JPH07190681A JP H07190681 A JPH07190681 A JP H07190681A JP 33570293 A JP33570293 A JP 33570293A JP 33570293 A JP33570293 A JP 33570293A JP H07190681 A JPH07190681 A JP H07190681A
- Authority
- JP
- Japan
- Prior art keywords
- dust
- rotary
- steel balls
- soot
- steel ball
- 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.)
- Granted
Links
Landscapes
- Incineration Of Waste (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】石炭焚ボイラー排ガスの脱硫装置
前後に設置されるガス−ガス熱交換器等の伝熱管に付着
した煤塵を鋼球散布方式により除去する装置において、
鋼球から煤塵を分離するダストセパレータに関する。[Industrial application] In a device for removing soot dust adhering to heat transfer tubes such as gas-gas heat exchangers installed before and after a coal-fired boiler exhaust gas desulfurization device by a steel ball spraying method,
The present invention relates to a dust separator that separates soot dust from steel balls.
【0002】[0002]
【従来の技術】図3は、鋼球と煤塵を分離する装置とし
て、従来利用されている3通りの方式を示す。図3
(a)は振動スクリーン方式であって、鋼球は篩上に、
煤塵は篩下に分離するものである。図3(b)は傾斜固
定したスクリーンの下側より空気等のガスを流し、煤塵
を気流に乗せて、外部へ分離する方法式である。図3
(c)はジグザグ管を利用するもので、鋼球が落下する
間に、鋼球の衝突により煤塵を剥離浮遊化させるととも
に、気流によっても浮遊分離する方式である。2. Description of the Related Art FIG. 3 shows three conventionally used systems for separating steel balls from soot and dust. Figure 3
(A) is a vibrating screen method, in which the steel balls are on the sieve,
Soot dust separates under the sieve. FIG. 3B is a method formula in which a gas such as air is made to flow from the lower side of the screen that is fixedly inclined, and soot dust is put on the airflow to separate it to the outside. Figure 3
(C) uses a zigzag tube, and is a method in which, while the steel balls fall, the soot dust is separated and floated by the collision of the steel balls, and is also floated and separated by the air flow.
【0003】[0003]
【発明が解決しようとする課題】鋼球に混入または付着
した煤塵が充分に除去されぬ状況で鋼球の循環散布運転
を継続すると、鋼球の煤塵量が累積増加してくる結果、
伝熱管に付着した煤塵を除去する効果が徐々に減少し、
熱交換性能の低下をきたす。したがって鋼球に混入・付
着した煤塵を効率よく除去することが重要である。When the circulating and spraying operation of the steel balls is continued in a situation where the soot dust mixed in or adhering to the steel balls is not sufficiently removed, the amount of soot dust in the steel balls increases cumulatively.
The effect of removing soot and dust adhering to the heat transfer tube gradually decreases,
It causes deterioration of heat exchange performance. Therefore, it is important to efficiently remove the soot and dust that is mixed and attached to the steel balls.
【0004】前記従来の振動スクリーンの場合には、ス
クリーンが摩耗するから、これを定期的に交換する必要
がある。また、煤塵が湿気を帯びると目詰りの原因とな
るし、粗大な煤塵が供給されると篩上に残って鋼球に混
入し分離できないという問題がある。In the case of the above-mentioned conventional vibrating screen, the screen is worn, and it is necessary to replace it periodically. Further, if the soot dust becomes moist, it may cause clogging, and if coarse soot dust is supplied, it remains on the sieve and mixes with the steel balls, which cannot be separated.
【0005】また傾斜固定スクリーンに気流を流す場合
には、鋼球が十分に分散せず、傾斜に沿うて相互位置を
保ったまま移動するだけで、分離効率は余り高くならな
い。Further, when the air flow is passed through the inclined fixed screen, the steel balls are not sufficiently dispersed and only move while maintaining their mutual positions along the inclination, and the separation efficiency is not so high.
【0006】[0006]
【課題を解決するための手段】本発明者は、前記従来の
課題を解決するために、熱交換器の伝熱管上に散布され
て同伝熱管表面の煤塵を除去した鋼球から煤塵を分離す
るものにおいて、軸線のまわりに回転可能に支持された
円筒状のロータリと、同ロータリの内面に固着されたス
パイラル状の羽根と、同羽根の間で上記ロータリ内面に
固着された掻き上げ板と、上記ロータリの一端に設けら
れた鋼球入口と、上記ロータリの他端に設けられた鋼球
出口および高温気体入口と、上記ロータリを回転させる
手段とを備えたことを特徴とするダストセパレータを提
案するものである。In order to solve the above-mentioned conventional problems, the inventor of the present invention separates soot from a steel ball that has been sprayed on the heat transfer tube of a heat exchanger to remove the soot on the surface of the heat transfer tube. The cylindrical rotary member rotatably supported around the axis, the spiral blades fixed to the inner surface of the rotary member, and the scraping plate fixed to the inner surface of the rotary member between the blades. , A steel ball inlet provided at one end of the rotary, a steel ball outlet and a high temperature gas inlet provided at the other end of the rotary, and a dust separator comprising means for rotating the rotary. It is a proposal.
【0007】[0007]
【作用】本発明は前記のように構成されているので、ス
パイラル羽根を内設して回転する円筒状のロータリの一
端の鋼球入口から鋼球と煤塵の混合物を供給し、他端の
高温気体入口から加熱空気や燃焼ガスのような高温気体
を送風する。Since the present invention is constructed as described above, the mixture of the steel balls and the dust is supplied from the steel ball inlet at one end of the cylindrical rotary that is rotated by installing the spiral blades, and the high temperature at the other end is supplied. Hot gas such as heated air or combustion gas is blown from the gas inlet.
【0008】鋼球がこのロータリ内をスパイラル羽根に
よって鋼球出口の方へ移動する間に、掻き上げ板で掻き
上げられては落下し、相互の接触・衝突を繰返すことに
より、付着した煤塵が剥離し、混入している粗大小塊の
煤塵も圧潰され粉砕されて浮遊しやすくなる。また煤塵
が湿潤して固化し浮遊し難い状況になっていた場合で
も、供給される高温気体により加熱されて乾燥し、浮遊
しやすくなる。While the steel balls move toward the steel ball outlet by the spiral blades in the rotary, they are scraped up by the scraping plate and fall, and the mutual contact and collision are repeated, so that the adhered soot and dust are removed. The large and small soot dust that has been peeled off and mixed in is also crushed and crushed, which makes it easier to float. Further, even when the soot dust is wet and solidifies and is difficult to float, the soot dust is heated by the supplied high temperature gas to be dried and easily floats.
【0009】こうして煤塵は鋼球から分離し、高温気体
中に浮遊して、鋼球入口から排出される。煤塵が分離除
去された鋼球は鋼球出口から取出される。Thus, the dust is separated from the steel balls, floats in the high temperature gas, and is discharged from the steel ball inlet. The steel ball from which the dust has been separated and removed is taken out from the steel ball outlet.
【0010】[0010]
【実施例】図1は本発明の一実施例を示すもので、図1
(a)は平面図、図1(b)は縦断側面図である。図2
は本発明が適用される鋼球散布除塵装置を示す全体配置
図である。FIG. 1 shows an embodiment of the present invention.
1A is a plan view, and FIG. 1B is a vertical side view. Figure 2
FIG. 1 is an overall layout drawing showing a steel ball spraying dust removal device to which the present invention is applied.
【0011】まず図2において、煤塵を含んだ排ガス
(1)は熱交換器(2)に入り、伝熱管群(3)を横切
る間に冷却される。この熱交換運転の経過とともに、伝
熱管群(3)の外表面に煤塵が付着してくるので、伝熱
管群(3)の上方に設置された分散器(8)へ分配機
(6)から鋼球を定期的に均等に供給し、分散器(8)
で分散して伝熱管群(3)全体に均等に行き渡るように
する。この鋼球が伝熱管群(3)内で衝突を繰り返しな
がら落下する間に、伝熱管表面に付着した煤塵が取除か
れ、その一部は排ガス(1)とともに排出される。残り
の煤塵は鋼球とともに熱交換器(2)の底部から定量排
出機(9)を通ってダストセパレータ(10)へ送られ
る。このセパレータ(10)にはまた、80〜120℃
の加熱空気等が供給され、これが浮遊した煤塵とともに
排出される。煤塵を除かれた鋼球は、ダストセパレータ
(10)から排出されて輸送機(バケットコンベヤ)
(5)へ投入され、再び分配機(6)を通って分散機
(8)から伝熱管群(3)上へ散布される。First, in FIG. 2, the exhaust gas (1) containing soot and dust enters the heat exchanger (2) and is cooled while traversing the heat transfer tube group (3). With the progress of this heat exchange operation, soot dust adheres to the outer surface of the heat transfer tube group (3), so the distributor (6) to the disperser (8) installed above the heat transfer tube group (3) Distributor (8) that supplies steel balls regularly and evenly
To be distributed evenly over the entire heat transfer tube group (3). While the steel balls fall while repeatedly colliding in the heat transfer tube group (3), soot and dust adhering to the surface of the heat transfer tubes are removed, and a part thereof is discharged together with the exhaust gas (1). The remaining soot dust is sent to the dust separator (10) together with the steel balls from the bottom of the heat exchanger (2) through the constant amount discharger (9). This separator (10) also has a temperature of 80 to 120 ° C.
The heated air, etc. is supplied, and this is discharged together with the suspended soot and dust. The steel balls from which soot and dust have been removed are discharged from the dust separator (10) and transported (bucket conveyor).
It is thrown into (5), and again passed through the distributor (6) to be dispersed from the disperser (8) onto the heat transfer tube group (3).
【0012】次に図1のダストセパレータにおいて、ケ
ーシング(11)の内部に回転円筒状のロータリ(1
2)があり、更にその内部にスパイラル羽根(13)が
固定され、羽板の間に掻き上げ板(14)が設けられて
いる。このロータリ(12)は回転支持軸受(16)に
よって支持され、駆動装置のモータ(18)、回転装置
(17)により回転駆動される。ロータリ(12)の両
端でケーシング(11)との間に回転シール(22)が
あり、ロータリ(12)とケーシング(11)の間を断
熱空気室として外気の影響を避けている。煤塵が付着、
混入した鋼球は入口(19)から投入され、回転円筒状
のロータリ(12)の中をスパイラル羽根(13)で攪
拌されつつ出口(20)へ向かって移動する間に、掻き
上げ板14で、掻き上げられては落下して、相互に衝突
・接触を繰返すので、煤塵は鋼球から分離浮遊してい
く。また塊状の煤塵も粉砕され、浮遊しやすくなる。こ
の間、加熱空気または燃焼ガスのような高温気体を入口
(21)から送給し、ロータリ(12)の中で浮遊して
いる煤塵を鋼球入口(19)から機外へ排出する。煤塵
が分離された鋼球は出口(20)を経て輸送機(図2中
のバケットコンベヤ(5))により循環される。Next, in the dust separator of FIG. 1, a rotary cylindrical rotary (1
2), a spiral blade (13) is fixed inside, and a scraping plate (14) is provided between the blades. The rotary (12) is supported by a rotary support bearing (16) and is rotationally driven by a motor (18) and a rotary device (17) of a drive device. A rotary seal (22) is provided between the rotary (12) and the casing (11) at both ends thereof, and an insulating air chamber is provided between the rotary (12) and the casing (11) to avoid the influence of outside air. Soot and dust adhere,
The mixed steel balls are thrown in through the inlet (19), and while moving toward the outlet (20) while being stirred by the spiral blade (13) in the rotary cylindrical rotary (12), the scraping plate 14 is used. As they are raked up and fall, they repeatedly collide and contact each other, so the soot dust separates from the steel balls and floats. In addition, lumpy soot dust is also crushed and easily floats. During this time, high temperature gas such as heated air or combustion gas is fed from the inlet (21), and the soot dust floating in the rotary (12) is discharged from the steel ball inlet (19) to the outside of the machine. The steel balls from which the soot and dust have been separated are circulated by the transportation machine (the bucket conveyor (5) in FIG. 2) via the outlet (20).
【0013】上記のとおり本実施例では、スパイラル羽
根(13)を内設する回転円筒状のロータリ(12)に
一端より鋼球と煤塵の混合物を供給し、他端から熱空気
または燃焼ガスを送風する。この回転するロータリ(1
2)を通過する間に鋼球が掻き上げ板(14)で掻き上
げられては落下し、相互に接触・衝突を繰返すことによ
り、付着した煤塵は剥離し、混入している粗大小塊の煤
塵も圧潰され粉砕される。このようにロータリ(12)
内に設けられたスパイラル羽根(13)の間には掻き上
げ板(14)があるピッチで設けられ、鋼球を掻き上げ
落下させ分離効果をあげている。また煤塵が湿潤して固
化し浮遊し難い状況となるのを避けるため、気流は80
〜120℃の高温とし、外気との断熱効果を得るため、
ロータリ(12)を断熱材を外周に巻いたケーシング
(11)内に収納し、その両端を回転シール(22)に
よりシールして、ロータリ(12)の外周に空気層を設
けている。この浮遊しやすい煤塵に高温の気流を当て飛
散除去する。As described above, in this embodiment, the mixture of the steel balls and the dust is supplied from one end to the rotary cylindrical rotary (12) in which the spiral blade (13) is installed, and hot air or combustion gas is supplied from the other end. Blow air. This rotating rotary (1
While passing through 2), the steel balls are scraped up by the scraping plate (14) and fall, and by repeating contact and collision with each other, the soot dust that adheres is peeled off and the mixed small and large lumps are separated. Soot and dust are also crushed and crushed. This way rotary (12)
A scraping plate (14) is provided at a pitch between the spiral blades (13) provided inside, and the steel balls are scraped up and dropped to enhance the separating effect. In order to prevent the dust from getting wet, solidifying, and becoming difficult to float, the air flow should be 80
In order to obtain a high temperature of ~ 120 ℃ and heat insulation effect with the outside air,
The rotary (12) is housed in a casing (11) wound with a heat insulating material on its outer periphery, and both ends thereof are sealed by rotary seals (22) to provide an air layer on the outer periphery of the rotary (12). A high-temperature airflow is applied to the soot and dust that easily floats to be scattered and removed.
【0014】本実施例の装置による分離効率は極めて高
く、鋼球への煤塵付着率として0.1%という目標を達
成できている。The separation efficiency of the apparatus of this example is extremely high, and the target of 0.1% as the dust adhesion rate on the steel balls can be achieved.
【0015】[0015]
【発明の効果】本発明においては、ロータリの回転に伴
う掻き上げ板の作用で煤塵や鋼球が攪拌され、煤塵は浮
遊しやすく、即ち分散が活性化されて分離効率が向上す
る。また、煤塵が湿気を帯びぬように熱風を通している
ので煤塵が固化しないし、万一固化してもロータリを通
過中に粉砕される。そして構造上スクリーンを利用して
いないので、スクリーンの摩耗、目詰りなどの問題はな
い。According to the present invention, soot and steel balls are agitated by the action of the scraping plate accompanying the rotation of the rotary, so the soot easily floats, that is, the dispersion is activated and the separation efficiency is improved. Further, since the soot dust passes through the hot air so as not to take moisture, the soot dust does not solidify, and even if it solidifies, it is crushed while passing through the rotary. Since the screen is not used due to its structure, there is no problem such as abrasion and clogging of the screen.
【図1】図1は本発明の一実施例を示すもので、図1
(a)は平面図、図1(b)は縦断側面図である。FIG. 1 shows an embodiment of the present invention.
1A is a plan view, and FIG. 1B is a vertical side view.
【図2】図2は本発明が適用される鋼球散布除塵装置を
示す全体配置図である。FIG. 2 is an overall layout view showing a steel ball spraying dust remover to which the present invention is applied.
【図3】鋼球と煤塵を分離する従来の方式を示す図であ
る。FIG. 3 is a diagram showing a conventional method for separating a steel ball and soot dust.
(1) 排ガス (2) 熱交換器 (3) 伝熱管群 (4) 冷却媒体 (5) 輸送機 (6) 分配機 (8) 分散器 (9) 定量排出機 (10) ダストセパレータ (11) ケーシング (12) ロータリ (13) スパイラル羽根 (14) かき上げ板 (15) 回転軸 (16) 回転支持軸受 (17) 回転装置 (18) モータ (19) 鋼球入口(煤塵出口) (20) 鋼球出口 (21) 熱風入口 (22) 回転シール (1) Exhaust gas (2) Heat exchanger (3) Heat transfer tube group (4) Cooling medium (5) Transport machine (6) Distributor (8) Disperser (9) Constant discharge machine (10) Dust separator (11) Casing (12) Rotary (13) Spiral blade (14) Raising plate (15) Rotating shaft (16) Rotating support bearing (17) Rotating device (18) Motor (19) Steel ball inlet (dust outlet) (20) Steel Ball outlet (21) Hot air inlet (22) Rotating seal
Claims (1)
管表面の煤塵を除去した鋼球から煤塵を分離するものに
おいて、軸線のまわりに回転可能に支持された円筒状の
ロータリと、同ロータリの内面に固着されたスパイラル
状の羽根と、同羽根の間で上記ロータリ内面に固着され
た掻き上げ板と、上記ロータリの一端に設けられた鋼球
入口と、上記ロータリの他端に設けられた鋼球出口およ
び高温気体入口と、上記ロータリを回転させる手段とを
備えたことを特徴とするダストセパレータ。1. A cylindrical rotary member rotatably supported around an axis in a method for separating soot dust from a steel ball which is sprayed on a heat transfer pipe of a heat exchanger to remove soot dust on the surface of the heat transfer pipe. , A spiral blade fixed to the inner surface of the rotary, a scraping plate fixed to the inner surface of the rotary between the blades, a steel ball inlet provided at one end of the rotary, and the other end of the rotary A dust separator, comprising: a steel ball outlet and a high temperature gas inlet provided in the above, and means for rotating the rotary.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33570293A JP3170127B2 (en) | 1993-12-28 | 1993-12-28 | Dust separator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33570293A JP3170127B2 (en) | 1993-12-28 | 1993-12-28 | Dust separator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07190681A true JPH07190681A (en) | 1995-07-28 |
JP3170127B2 JP3170127B2 (en) | 2001-05-28 |
Family
ID=18291530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33570293A Expired - Fee Related JP3170127B2 (en) | 1993-12-28 | 1993-12-28 | Dust separator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3170127B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108379988A (en) * | 2018-04-28 | 2018-08-10 | 遵义双河生物燃料科技有限公司 | Granulation dust-extraction unit |
CN114001368A (en) * | 2021-11-01 | 2022-02-01 | 连云港虹洋热电有限公司 | Flue gas purification and recycling device of coal-fired boiler and control system thereof |
-
1993
- 1993-12-28 JP JP33570293A patent/JP3170127B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108379988A (en) * | 2018-04-28 | 2018-08-10 | 遵义双河生物燃料科技有限公司 | Granulation dust-extraction unit |
CN108379988B (en) * | 2018-04-28 | 2023-09-12 | 遵义双河生物燃料科技有限公司 | Granulating dust-removing device |
CN114001368A (en) * | 2021-11-01 | 2022-02-01 | 连云港虹洋热电有限公司 | Flue gas purification and recycling device of coal-fired boiler and control system thereof |
Also Published As
Publication number | Publication date |
---|---|
JP3170127B2 (en) | 2001-05-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0194121B1 (en) | Blast cleaning | |
CN101918152A (en) | Separator rotary feeder and the method for using it | |
CN105819646B (en) | System and method for recovering heat from tail gas after sludge drying | |
TW201710635A (en) | Drying method of terephthalic acid and horizontal rotary dryer for accelerating drying speed of terephthalic acid and realizing miniaturization of dryer | |
CN111981771A (en) | Novel flaky calcium chloride dihydrate drying and cooling device and method | |
JP3621822B2 (en) | Smoke treatment method and equipment | |
US5624644A (en) | Apparatus for acid gas emission control | |
JP3170127B2 (en) | Dust separator | |
CN211284112U (en) | Sludge drying device | |
CN111841163A (en) | Cyclone dust removal device | |
CN211688781U (en) | Vertical sludge drying device | |
JP4741361B2 (en) | Recycling dryer | |
CN112479547A (en) | Sludge drying device and operation method | |
CN206555998U (en) | A kind of desulfuration boiler | |
JP2016169888A (en) | Continuous cooling apparatus and cooling method for particulate matter | |
JP4496131B2 (en) | Structure of furnace body in mercury separation and recovery equipment from mercury-containing materials | |
GB2142407A (en) | Cleaning heat exchangers | |
JPH08313194A (en) | Steel ball scattering apparatus | |
JP3382876B2 (en) | Heat exchange equipment | |
JPS6129699A (en) | Heat exchanger for high temperature dust containing gas | |
SU1046581A1 (en) | Drum drier | |
CA2231693A1 (en) | Double rotating mixing system | |
JPH08285479A (en) | Suction/conveyance method and apparatus for deposit | |
RU1788406C (en) | Rotary furnace | |
JPH05187772A (en) | Dried material dropping port of multi-stage drying machine positioned apart from gas passage |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20010220 |
|
LAPS | Cancellation because of no payment of annual fees |