JPH0351632Y2 - - Google Patents
Info
- Publication number
- JPH0351632Y2 JPH0351632Y2 JP1985050736U JP5073685U JPH0351632Y2 JP H0351632 Y2 JPH0351632 Y2 JP H0351632Y2 JP 1985050736 U JP1985050736 U JP 1985050736U JP 5073685 U JP5073685 U JP 5073685U JP H0351632 Y2 JPH0351632 Y2 JP H0351632Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- pipe
- bleed
- supply device
- powder
- 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
- 239000000843 powder Substances 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 description 8
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Air Transport Of Granular Materials (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、微粉炭、微粉コークスなどの粉粒体
をボイラなどの燃焼炉へ安定して供給するための
粉粒体供給装置に関するものである。[Detailed description of the invention] [Field of industrial application] The present invention relates to a powder supply device for stably supplying powder and granules such as pulverized coal and pulverized coke to a combustion furnace such as a boiler. be.
従来、微粉炭などの粉粒体燃料を常圧の貯蔵バ
ンカーまたはホツパより、加圧下の搬送ラインに
供給する場合、第３図および第４図に示すよう
に、貯蔵バンカー１（またはホツパ）の下側に定
量供給機２を設置し、搬送ライン３内の圧力のシ
ールのためにロータリーフイーダーなどのシール
バルブ４を設け、供給の安定性を保つためにシー
ルバルブ４と定量供給機２との間に抽気室５を設
けて、リーク空気をダンパー６を備えた抽気管７
から抽気する方法が実施されている。８はバル
ブ、１０はダスト分離機、１１は排風機である。
Conventionally, when supplying granular fuel such as pulverized coal from a normal pressure storage bunker or hopper to a pressurized conveyance line, as shown in FIGS. 3 and 4, the storage bunker 1 (or hopper) is A quantitative feeder 2 is installed on the lower side, and a seal valve 4 such as a rotary leaf feeder is installed to seal the pressure inside the conveyance line 3, and the seal valve 4 and the quantitative feeder 2 are connected to each other in order to maintain stability of supply. An air bleed chamber 5 is provided in between, and the leak air is transferred to an air bleed pipe 7 equipped with a damper 6.
A method of extracting air from the 8 is a valve, 10 is a dust separator, and 11 is an exhaust fan.
また、実願昭55−182382号（実開昭57−103939
号）のマイクロフイルムには、微粉炭サービスホ
ツパを供給用ロータリフイーダを介して流量計重
機に連結し、この流量計重機に上段エアロツク用
ロータリフイーダを介して漏気分離筒を連結し、
この漏気分離筒の下部を下段エアロツク用ロータ
リフイーダを介して輸送管に連結し、漏気分離筒
に上部に放出管を設けた微粉炭定量供給装置が記
載されている。 Also, Utility Application No. 55-182382 (Utility Application No. 57-103939)
The pulverized coal service hopper is connected to a flowmeter weighing machine via a supply rotary feeder, and a leakage separation cylinder is connected to this flowmeter weighing machine via a rotary feeder for an upper airlock.
A pulverized coal quantitative supply device is described in which the lower part of the leakage separation cylinder is connected to a transport pipe via a rotary feeder for a lower airlock, and a discharge pipe is provided in the upper part of the leakage separation cylinder.
また、特開昭58−145816号公報には、２基の石
炭貯蔵槽に傾斜コンベアを介して上流側の中間貯
蔵容器、さらには下流側の中間貯蔵容器を接続
し、下流側の中間貯蔵容器に粉砕機を接続し、粉
砕石炭を燃焼室へ供給するようにし、上流側の中
間貯蔵容器１２の上側部に弁を備えた排気パイプ
を接続した石炭供給装置が記載されている。 Furthermore, in Japanese Patent Application Laid-Open No. 58-145816, an intermediate storage container on the upstream side and an intermediate storage container on the downstream side are connected to two coal storage tanks via an inclined conveyor. A coal supply device is described in which a pulverizer is connected to the pulverizer to supply pulverized coal to the combustion chamber, and an exhaust pipe equipped with a valve is connected to the upper side of the intermediate storage container 12 on the upstream side.
しかし上記の従来方式においては、抽気管の閉
塞が多発している。とくにボイラなどの固体燃焼
設備の燃料供給設備として用いた場合には、燃料
の乾燥工程、粉砕工程などの方法によつては、よ
く閉塞を生じ易い条件があり、供給の安全性を欠
き、時にはボイラなどの主要設備の運転停止に至
る場合もある。
However, in the above-mentioned conventional system, blockages of the air bleed pipe occur frequently. In particular, when used as fuel supply equipment for solid combustion equipment such as boilers, there are conditions that can easily cause blockages depending on the fuel drying process, pulverization process, etc., resulting in a lack of supply safety and sometimes This may lead to the shutdown of major equipment such as boilers.
閉塞防止のためには、抽気管内流速を適正値に
維持することが肝要であるが、シールバルブから
のリーク量は経時的に変化するため、計画流量の
設定が困難であり、従来は常時、管内の適正流速
を保ことができず閉塞を生じた。またリーク量の
少ないときには抽気室内圧が負圧となり、抽気室
上部にロードセル式の計量機を設置した場合に
は、負圧が計量誤差となるため、抽気室と計量機
との間に別途シールバルブを設けるなどの配慮が
必要であつた。また搬送物として石炭、オイルコ
ークスなどの付着水分を有するものを乾燥した
後、供給する場合には、抽気管表面にて結露を生
じ、そこへ飛散微粉が付着し成長して管路を狭
め、正常部分の管内流速を低下せしめ、著しい場
合は抽気管の完全閉塞が生じていた。 In order to prevent blockages, it is important to maintain the flow rate in the bleed pipe at an appropriate value, but the amount of leakage from the seal valve changes over time, making it difficult to set the planned flow rate. The proper flow rate inside the pipe could not be maintained and a blockage occurred. Also, when the amount of leakage is small, the pressure in the bleed chamber becomes negative pressure, and if a load cell type weighing machine is installed above the bleed chamber, the negative pressure will cause a measurement error, so a separate seal is installed between the bleed chamber and the weighing machine. Considerations such as installing a valve were necessary. In addition, when transporting materials that have attached moisture such as coal or oil coke after drying, dew condensation occurs on the surface of the bleed pipe, and scattered fine powder adheres and grows there, narrowing the pipe. The flow velocity in the normal part of the pipe decreased, and in severe cases, complete blockage of the air bleed pipe occurred.
以上のように、抽気管の閉塞は抽気管内の管表
面での結露、結露が生じた管表面への微粉の凝
集・固着が原因である。 As described above, blockage of the air bleed pipe is caused by dew condensation on the pipe surface within the air bleed pipe, and aggregation and adhesion of fine powder on the pipe surface where the condensation has occurred.
また、実願昭55−182382号（実開昭57−103939
号）のマイクロフイルム記載の考案における放出
管、および特開昭58−145816号公報記載の考案に
おける排気パイプは、いずれも、本願の従来技術
における抽気管７（本願の第３図、第４図参照）
に相当するものである。すなわち、これらの公報
はいずれも、本願明細書における従来技術の相当
するものに過ぎない。 Also, Utility Application No. 55-182382 (Utility Application No. 57-103939)
The discharge pipe in the device described in the microfilm of JP-A-58-145816 and the exhaust pipe in the device described in JP-A-58-145816 are both the same as the bleed pipe 7 in the prior art of the present application (Figs. 3 and 4 of the present application). reference)
This corresponds to That is, all of these publications are merely equivalent to the prior art described in the present specification.
そして、これらの公報には、抽気管の閉塞対策
については、何も記載されていない。 These publications do not describe any measures against blockage of the air bleed pipe.
本考案は上記の諸点に鑑みなされたもので、抽
気管での閉塞を防止することができる粉粒体供給
装置を提供することを目的とするものである。 The present invention has been developed in view of the above points, and an object of the present invention is to provide a powder supply device that can prevent clogging of the bleed pipe.
上記の目的を達成するために、本考案の粉粒体
供給装置は、第１図および第２図を参照して説明
すれば、貯蔵バンカー１またはホツパの下側に設
けた定量供給機２または１４と搬送ライン３との
間に、ロータリーフイーダーなどのシールバルブ
４を設け、粉粒体を常圧の貯蔵バンカー１まはた
ホツパから加圧下の搬送ライン３に供給して気流
搬送し、シールバルブ４からのリーク搬送気体を
供給の安定化のための常時抽気する抽気管７を備
えた抽気室５を設けた粉粒体供給装置において、
抽気室５、または定量供給機１４の排出口近傍
に、ダンパー１２などの風量調整用弁（以下、風
量調節用弁１２ということもある）を備えた大気
吸入管１３を設けたことを特徴としている。
In order to achieve the above object, the powder supply device of the present invention will be described with reference to FIGS. 1 and 2. 14 and the conveyance line 3, a seal valve 4 such as a rotary feeder is provided, and the powder or granules are supplied from the normal pressure storage bunker 1 or hopper to the pressurized conveyance line 3 and conveyed by air flow. In a powder supply device equipped with an bleed chamber 5 equipped with a bleed pipe 7 that constantly bleeds the carrier gas leaking from the seal valve 4 to stabilize the supply,
It is characterized in that an atmospheric air suction pipe 13 equipped with an air volume adjustment valve (hereinafter also referred to as the air volume adjustment valve 12) such as a damper 12 is provided in the air bleed chamber 5 or near the outlet of the quantitative feeder 14. There is.
リーク風量に応じた大気が、大気吸入管１３、
抽気室５を介して抽気管７を通過する。このた
め、常時、抽気管７内流速はほぼ一定に保たれ、
閉塞のおそれはなくなる。また抽気室５内圧も大
気圧とほぼ等しい圧力に保たれ、抽気室５上部に
ロードセル式の計量機を設置した場合、計量誤差
の発生を防止することができる。
Atmosphere according to the leakage air volume flows into the air intake pipe 13,
It passes through the bleed pipe 7 via the bleed chamber 5. Therefore, the flow velocity inside the air bleed pipe 7 is kept almost constant at all times,
There is no danger of blockage. Furthermore, the internal pressure of the bleed chamber 5 is maintained at approximately the same pressure as the atmospheric pressure, and when a load cell type weighing machine is installed above the bleed chamber 5, measurement errors can be prevented from occurring.
以下、本考案の実施例を第１図および第２図に
基づいて詳細に説明する。
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.
第１図は本考案の粉粒体供給装置の一例を示し
ている。貯蔵バンカー１の下側に定量供給機２が
設けられ、この定量供給機２と搬送ライン３との
間にロータリーフイーダーなどのシールバルブ４
が設けられ、定量供給機２とシールバルブ４との
間に、抽気管７を備えた抽気室５を設け、粉粒体
を常圧の貯蔵バンカー１から加圧下の搬送ライン
３に供給して気流搬送し、シールバルブ４からの
リーク搬送気体を供給の安定化のために常時抽気
するようにして粉粒体供給装置が構成されてい
る。６は抽気管７に設けられたダンパー、８はバ
ルブである。 FIG. 1 shows an example of a powder supply device of the present invention. A quantitative feeder 2 is provided below the storage bunker 1, and a seal valve 4 such as a rotary feeder is installed between the quantitative feeder 2 and the conveyance line 3.
An air bleed chamber 5 equipped with an air bleed pipe 7 is provided between the quantitative feeder 2 and the seal valve 4, and the powder and granules are fed from the normal pressure storage bunker 1 to the pressurized conveyance line 3. The powder and granular material supply device is configured to carry out air flow and constantly bleed out the leaked carrying gas from the seal valve 4 in order to stabilize the supply. 6 is a damper provided in the air bleed pipe 7, and 8 is a valve.
上記の装置において、抽気室５にダンパー１２
などの風量調整用弁を備えた大気吸入管１３を設
ける。装置使用の初期には、抽気室５内の圧力が
±０または僅かに負圧となるようにダンパー６，
１２で調整しておく。その後、シールバルブ４か
らのリーク搬送気体が増して抽気室５内の圧力が
変化すれば、再度、抽気室５内の圧力が適正とな
るようダンパー６，１２を調整する。 In the above device, a damper 12 is provided in the bleed chamber 5.
An atmosphere suction pipe 13 equipped with an air volume adjustment valve is provided. At the beginning of use of the device, the damper 6,
Adjust it to 12. Thereafter, when the leakage carrier gas from the seal valve 4 increases and the pressure inside the bleed chamber 5 changes, the dampers 6 and 12 are adjusted again so that the pressure inside the bleed chamber 5 becomes appropriate.
第２図は本考案の粉粒体供給装置の他の例を示
している。本例は貯蔵バンカー１と抽気室５との
間にベルトフイーダー、スクリユーフイーダーな
どの定量供給機１４を設け、この定量供給機１４
の排出口１５の近傍に、ダンパー１２などの風量
調整用弁を備えた大気吸入管１３を設けたもので
ある。 FIG. 2 shows another example of the powder supply device of the present invention. In this example, a quantitative feeder 14 such as a belt feeder or a screw feeder is provided between the storage bunker 1 and the bleed chamber 5.
An atmospheric air suction pipe 13 equipped with an air volume adjustment valve such as a damper 12 is provided near the exhaust port 15 of the air vent.
本考案は上記のように、風量調整用弁１２を備
えた大気吸入管１３を設けるものであるから、リ
ーク風量に応じた大気が抽気室を介して抽気管を
通過するので、常時、抽気管内流速はほぼ一定に
保たれ、抽気管の閉塞のおそれはなくなる。また
抽気室内もほぼ大気圧と同圧に保たれるので、抽
気室上部に計量機を設置した場合でも、計量誤差
を小さくするための対策は不要となる、さらに管
内流速を適正に選ぶことによつて、管表面への結
露の発生・溜留を防止し、結露を原因とする閉塞
は生じなくなる。
As described above, the present invention is provided with the atmospheric air suction pipe 13 equipped with the air volume adjustment valve 12, so that the atmospheric air corresponding to the leak air volume passes through the air bleed pipe via the air bleed chamber, so that the air inside the air bleed pipe is always maintained. The flow rate remains approximately constant and there is no risk of blockage of the bleed pipe. In addition, the pressure in the bleed chamber is maintained at approximately the same pressure as atmospheric pressure, so even if a meter is installed above the bleed chamber, there is no need to take measures to reduce measurement errors. Therefore, generation and accumulation of condensation on the tube surface is prevented, and blockages caused by condensation do not occur.
また計量機および定量供給機として、密閉型を
選定した場合、通常、粉塵の発生防止のため、あ
るいは結露防止対策として集じん管、換気管の設
置が必要があるが、第２図の実施例で示したよう
に、定量供給機の排出口近傍に大気吸入管を設け
ることにより、集じん管、換気管などの省略が可
能となるなどの効果を有している。 In addition, if a closed type is selected as a weighing machine or metering machine, it is usually necessary to install dust collection pipes and ventilation pipes to prevent dust generation or dew condensation. As shown in , by providing an atmospheric suction pipe near the discharge port of the quantitative feeder, it is possible to omit dust collection pipes, ventilation pipes, etc.
第１図は本考案の粉粒体供給装置の一例を示す
説明図、第２図は本考案の装置の他の例を示す説
明図、第３図は従来の粉粒体供給装置の一例を示
す説明図、第４図は第３図に示す装置とダスト分
離機、排風機とを示す説明図である。
１……貯蔵バンカー、２……定量供給機、３…
…搬送ライン、４……シールバルブ、５……抽気
室、６……ダンパー、７……抽気管、８……バル
ブ、１０……ダスト分離機、１１……排風機、１
２……ダンパー（風量調整用弁）、１３……大気
吸入管、１４……定量供給機、１５……排出口。
Fig. 1 is an explanatory diagram showing an example of a powder supply device of the present invention, Fig. 2 is an explanatory diagram showing another example of the device of the present invention, and Fig. 3 is an explanatory diagram showing an example of a conventional powder supply device. FIG. 4 is an explanatory diagram showing the apparatus shown in FIG. 3, a dust separator, and an exhaust fan. 1...Storage bunker, 2...Quantitative supply machine, 3...
... Conveyance line, 4 ... Seal valve, 5 ... Bleed chamber, 6 ... Damper, 7 ... Bleed pipe, 8 ... Valve, 10 ... Dust separator, 11 ... Exhaust fan, 1
2...damper (air volume adjustment valve), 13...atmospheric suction pipe, 14...quantity feeder, 15...discharge port.
Claims (1)
量供給機２または１４と搬送ライン３との間に、
シールバルブ４を設け、粉粒体を常圧の貯蔵バン
カー１またはホツパから加圧下の搬送ライン３に
供給して気流搬送し、シールバルブ４からのリー
ク搬送気体を供給の安定化のために常時抽気する
抽気管７を備えた抽気室５を設けた粉粒体供給装
置において、 抽気室５、または定量供給機１４の排出口近傍
に、風量調整用弁１２を備えた大気吸入管１３を
設けたことを特徴とする粉粒体供給装置。[Claims for Utility Model Registration] Between the quantitative feeder 2 or 14 provided below the storage bunker 1 or hopper and the conveyance line 3,
A seal valve 4 is provided, and the powder and granules are supplied from the normal pressure storage bunker 1 or hopper to the pressurized conveyance line 3 for air flow conveyance, and the leak conveyance gas from the seal valve 4 is constantly supplied to stabilize the supply. In a powder supply device having an air bleed chamber 5 equipped with an air bleed pipe 7, an atmosphere suction pipe 13 equipped with an air volume adjustment valve 12 is provided in the air bleed chamber 5 or near the outlet of the quantitative feeder 14. A powder supply device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985050736U JPH0351632Y2 (en) | 1985-04-05 | 1985-04-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985050736U JPH0351632Y2 (en) | 1985-04-05 | 1985-04-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61170835U JPS61170835U (en) | 1986-10-23 |
| JPH0351632Y2 true JPH0351632Y2 (en) | 1991-11-06 |
Family
ID=30569149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985050736U Expired JPH0351632Y2 (en) | 1985-04-05 | 1985-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351632Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4026994B2 (en) * | 1998-08-27 | 2007-12-26 | 三井化学株式会社 | Powder quantitative supply apparatus and powder quantitative supply method using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58145816A (en) * | 1982-02-15 | 1983-08-31 | ドイツチエ・バブコツク・アンラ−ゲン・アクチエンゲゼルシヤフト | Coal feeder into combustion chamber under high pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103939U (en) * | 1980-12-17 | 1982-06-26 |
-
1985
- 1985-04-05 JP JP1985050736U patent/JPH0351632Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58145816A (en) * | 1982-02-15 | 1983-08-31 | ドイツチエ・バブコツク・アンラ−ゲン・アクチエンゲゼルシヤフト | Coal feeder into combustion chamber under high pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61170835U (en) | 1986-10-23 |
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