JPH0212360B2 - - Google Patents
Info
- Publication number
- JPH0212360B2 JPH0212360B2 JP58002955A JP295583A JPH0212360B2 JP H0212360 B2 JPH0212360 B2 JP H0212360B2 JP 58002955 A JP58002955 A JP 58002955A JP 295583 A JP295583 A JP 295583A JP H0212360 B2 JPH0212360 B2 JP H0212360B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- fluidized
- particles
- fluidized bed
- tubes
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D13/00—Heat-exchange apparatus using a fluidised bed
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【発明の詳細な説明】
本発明は、伝熱管に流動粒子が衝突することに
より生じる該伝熱管の摩耗を防止し、伝熱管の長
寿命化を計つた流動層式熱交換器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluidized bed heat exchanger that prevents wear of heat exchanger tubes caused by fluidized particles colliding with the heat exchanger tubes and extends the life of the heat exchanger tubes.
流動層ボイラー、流動層ガス加熱器等の流動層
式熱交換器は、流動粒子を含む流体と伝熱管の熱
伝達率が200〜300W／m2Ｋときわめて高く、化学
プラント装置、熱回収装置、石炭の燃焼装置等で
有用である。しかし、流動粒子が伝熱管と衝突す
るため、該伝熱管が摩耗、損傷し、従つて伝熱管
の寿命が短く、その交換を頻繁に行う必要があ
る。 Fluidized bed heat exchangers such as fluidized bed boilers and fluidized bed gas heaters have an extremely high heat transfer coefficient of 200 to 300 W/m 2 K between the fluid containing fluidized particles and heat transfer tubes, and are suitable for chemical plant equipment, heat recovery equipment, etc. , useful in coal combustion equipment, etc. However, since the fluidized particles collide with the heat exchanger tubes, the heat exchanger tubes are worn out and damaged, so that the lifespan of the heat exchanger tubes is short and it is necessary to replace them frequently.
例えば、第１図に示す流動層ボイラー１では、
砂、灰等の流動粒子や石炭２等が伝熱管３に衝突
し、熱交換を行つているが、第２図に示すごと
く、伝熱管３の衝突の激しい個所３ａでは特に伝
熱管３の摩耗が激しく、ボイラーの寿命、安全性
の観点から問題があつた。なお、第１図中４は散
気板、５は空気、６は燃焼排ガス、７は水、８は
燃料、９は蒸気ドラムである。 For example, in the fluidized bed boiler 1 shown in FIG.
Fluid particles such as sand and ash, coal 2, etc. collide with the heat exchanger tubes 3 and exchange heat, but as shown in FIG. This caused problems in terms of boiler life and safety. In FIG. 1, 4 is a diffuser plate, 5 is air, 6 is combustion exhaust gas, 7 is water, 8 is fuel, and 9 is a steam drum.
又、上記伝熱管３の摩耗を防止するために、例
えば、伝熱管としてステンレス等の硬質材料を用
いることも考えられるが、高価であるため実現性
には疑問がある。 Furthermore, in order to prevent wear of the heat exchanger tubes 3, it is conceivable to use a hard material such as stainless steel as the heat exchanger tube, but this is expensive and there are doubts about its feasibility.
本発明は上記観点に鑑み、伝熱管の外周に流動
粒子を捕捉する手段を設けることにより該伝熱管
の摩耗を防止し、伝熱管の寿命が長くなるように
した流動層式熱交換器を提供することを目的とし
てなしたものである。 In view of the above points, the present invention provides a fluidized bed heat exchanger that prevents wear of the heat exchanger tubes by providing means for trapping fluidized particles on the outer periphery of the heat exchanger tubes, thereby extending the life of the heat exchanger tubes. This was done with the purpose of doing so.
以下、本発明の実施例を図面を参照しつつ説明
する。 Embodiments of the present invention will be described below with reference to the drawings.
第３図及び第４図は本発明の第１実施例で、伝
熱管３の外周に波形リボン状の帯板１０を例えば
螺旋状に巻付け、該帯板１０を伝熱管３に対し溶
着により固定してフイン状とする。帯板１０の材
質は流動粒子の種類により適切に選定し、帯板１
０の波の形状、巻付けピツチｐ、高さｈ等は流動
粒子の大きさ等により最適寸法に決定する。 3 and 4 show a first embodiment of the present invention, in which a corrugated ribbon-shaped strip 10 is wound around the outer periphery of a heat exchanger tube 3, for example, in a spiral shape, and the strip 10 is welded to the heat exchanger tube 3. Fix it and make it into a fin shape. The material of the strip plate 10 is appropriately selected depending on the type of fluid particles.
The shape of the zero wave, the winding pitch p, the height h, etc. are determined to be optimal dimensions depending on the size of the fluidized particles.
流動粒子は帯板１０のフイン状の部分に捕捉さ
れ、伝熱管３の外周に直接衝突しないため、伝熱
管３外周の摩耗が防止される。 The fluidized particles are captured by the fin-shaped portions of the strip plate 10 and do not collide directly with the outer periphery of the heat exchanger tubes 3, so that wear on the outer periphery of the heat exchanger tubes 3 is prevented.
第５図及び第６図は本発明の第２実施例で、伝
熱管３の外周に、多数の針状ワイヤー１１を栗に
毬状に多数溶着する。針状ワイヤー１１の材質は
第１実施例の場合と同様、流動粒子の種類により
適切に選定し、針状ワイヤー１１の単位面積当り
の数量、長さｌは流動粒子の大きさ等により適宜
決定される。 5 and 6 show a second embodiment of the present invention, in which a large number of needle wires 11 are welded to the outer periphery of a heat transfer tube 3 in a cone shape. As in the case of the first embodiment, the material of the needle wire 11 is appropriately selected depending on the type of fluid particles, and the number of needle wires 11 per unit area and length l are determined as appropriate depending on the size of the fluid particles, etc. be done.
流動粒子は針状ワイヤー１１間に捕捉され、伝
熱管３の外周に直接衝突することはない。従つて
この場合にも伝熱管３外周の摩耗が防止される。 The fluidized particles are captured between the needle wires 11 and do not directly collide with the outer periphery of the heat exchanger tube 3. Therefore, also in this case, wear on the outer periphery of the heat exchanger tubes 3 is prevented.
第７図は本発明の第３実施例で、第５図及び第
６図に示す針状ワイヤー１１を帯板１２に多数溶
着し、針状ワイヤー１１が外方へ向くよう帯板１
２を伝熱管３に対し例えば螺旋状に巻付け、帯板
１２を伝熱管３に溶着する。斯かる構成として
も、流動粒子は針状ワイヤー１１間に捕捉され、
伝熱管３の外周に直接衝突することはない。 FIG. 7 shows a third embodiment of the present invention, in which a large number of needle wires 11 shown in FIGS.
2 is wound, for example, spirally around the heat exchanger tube 3, and the strip plate 12 is welded to the heat exchanger tube 3. Even with such a configuration, fluid particles are captured between the needle wires 11,
It does not directly collide with the outer periphery of the heat exchanger tube 3.
第８図は本発明の第４実施例で、伝熱管３の外
周に、流動粒子の種類に応じて適切に選定した材
質及びメツシユの大きさのニツトワイヤー１３を
巻付け、溶着する。斯かる構成としても前記各実
施例の場合と同様、流動粒子はニツトワイヤー１
３の部分に捕捉される。 FIG. 8 shows a fourth embodiment of the present invention, in which a knitted wire 13 of a material and mesh size appropriately selected depending on the type of fluidized particles is wound around the outer periphery of a heat exchanger tube 3 and welded. Even in such a configuration, as in the case of each of the above embodiments, the fluidized particles are connected to the knitted wire 1.
It is captured in part 3.
なお、本発明の実施例では、フイン状の帯板や
針状ワイヤーを取付けた帯板を伝熱管に対して螺
旋状に巻付ける場合について説明したが、リング
状にして伝熱管に固定することもできること、そ
の他、本発明の要旨を逸脱しない範囲内で種々変
更を加え得ること等は勿論である。 In addition, in the embodiments of the present invention, a case has been described in which a fin-shaped strip plate or a strip plate with needle-like wires attached is spirally wound around a heat exchanger tube, but it is also possible to make it into a ring shape and fix it to the heat exchanger tube. Of course, various modifications may be made within the scope of the invention without departing from the gist of the invention.
本発明の流動層式熱交換器によれば、流動粒子
が流動粒子捕捉手段に捕捉され直接伝熱管に衝突
することがないため、流動粒子と伝熱管との摩耗
を防止できる。従つて、伝熱管の摩耗が防止され
てその寿命が著しく延長され、熱交換器の保全、
補修費が低減される。又、従来は伝熱管を設置で
きないような流動粒子の流動の激しい箇所にも伝
熱管を設置することが可能となるため、伝熱効率
を損うこともない。 According to the fluidized bed heat exchanger of the present invention, since the fluidized particles are captured by the fluidized particle capture means and do not directly collide with the heat transfer tubes, wear between the fluidized particles and the heat transfer tubes can be prevented. Therefore, wear of the heat exchanger tubes is prevented and their lifespan is significantly extended, and the maintenance of the heat exchanger is improved.
Repair costs are reduced. In addition, heat transfer tubes can be installed in locations where fluidized particles flow violently, where heat transfer tubes could not be installed conventionally, so that heat transfer efficiency is not impaired.
第１図は流動層ボイラーの説明図、第２図は第
１図の流動層ボイラーに使用する従来の伝熱管の
説明図、第３図は本発明の流動層式熱交換器の第
１実施例の説明図、第４図は第３図の―方向
矢視図、第５図は本発明の流動層式熱交換器の第
２実施例の説明図、第６図は第５図の―方向
矢視図、第７図は本発明の流動層式熱交換器の第
３実施例の説明図、第８図は同第４実施例の説明
図である。
図中３は伝熱管、１０は帯板、１１は針状ワイ
ヤー、１２は帯板、１３はニツトワイヤーを示
す。
Fig. 1 is an explanatory diagram of a fluidized bed boiler, Fig. 2 is an explanatory diagram of a conventional heat exchanger tube used in the fluidized bed boiler of Fig. 1, and Fig. 3 is a first implementation of the fluidized bed heat exchanger of the present invention. FIG. 4 is an explanatory view of the second embodiment of the fluidized bed heat exchanger of the present invention, FIG. 4 is a view in the direction of FIG. 7 is an explanatory diagram of the third embodiment of the fluidized bed heat exchanger of the present invention, and FIG. 8 is an explanatory diagram of the fourth embodiment of the fluidized bed heat exchanger of the present invention. In the figure, 3 is a heat exchanger tube, 10 is a band plate, 11 is a needle wire, 12 is a band plate, and 13 is a knitted wire.
Claims (1)
外周に、流動粒子を捕捉する手段を設けたことを
特徴とする流動層式熱交換器。1. A fluidized bed heat exchanger characterized in that a means for capturing fluidized particles is provided on the outer periphery of a heat transfer tube that exchanges heat with a fluid containing fluidized particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP295583A JPS59129388A (en) | 1983-01-12 | 1983-01-12 | Fluidized bed type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP295583A JPS59129388A (en) | 1983-01-12 | 1983-01-12 | Fluidized bed type heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59129388A JPS59129388A (en) | 1984-07-25 |
| JPH0212360B2 true JPH0212360B2 (en) | 1990-03-20 |
Family
ID=11543786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP295583A Granted JPS59129388A (en) | 1983-01-12 | 1983-01-12 | Fluidized bed type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59129388A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421363U (en) * | 1990-06-08 | 1992-02-24 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5773614B2 (en) * | 2010-10-26 | 2015-09-02 | 出光興産株式会社 | Structure with curved protector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57148674U (en) * | 1981-03-13 | 1982-09-18 |
-
1983
- 1983-01-12 JP JP295583A patent/JPS59129388A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421363U (en) * | 1990-06-08 | 1992-02-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59129388A (en) | 1984-07-25 |
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