JPS6151206B2 - - Google Patents
Info
- Publication number
- JPS6151206B2 JPS6151206B2 JP56003461A JP346181A JPS6151206B2 JP S6151206 B2 JPS6151206 B2 JP S6151206B2 JP 56003461 A JP56003461 A JP 56003461A JP 346181 A JP346181 A JP 346181A JP S6151206 B2 JPS6151206 B2 JP S6151206B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- pipe
- air
- pulverized coal
- fine
- 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
- 239000003245 coal Substances 0.000 claims description 134
- 238000003860 storage Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 230000032258 transport Effects 0.000 description 35
- 239000011521 glass Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 241000273930 Brevoortia tyrannus Species 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VAYOSLLFUXYJDT-RDTXWAMCSA-N Lysergic acid diethylamide Chemical class C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N(CC)CC)C2)=C3C2=CNC3=C1 VAYOSLLFUXYJDT-RDTXWAMCSA-N 0.000 description 1
- 238000005760 Tripper reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Air Transport Of Granular Materials (AREA)
Description
【発明の詳細な説明】
この発明は、微細粉炭を貯炭場から微粉砕機を
経てバーナまで連続輸送する微粉炭の空気輸送方
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for pneumatically transporting pulverized coal, which continuously transports pulverized coal from a coal stockyard to a burner via a pulverizer.
従来、細炭の輸送は、貯炭場から微粉細機ま
で、細炭をブルドーザのようなスクレーパまたは
リクレーマによつてコンベヤに乗せ、コンベヤの
最先端のシユートすなわちトリツパから所要のコ
ールバンカーに落とすことによりなされていた。
また微粉炭の輸送は、微粉砕機においてコールバ
ンカーからの細炭を微粉化した微粉炭を、ここか
らバーナまで微粉砕機への加熱空気の送入によつ
て空気輸送することによりなされていた。しかし
このような輸送方法では、スクレーパやトリツパ
などの操作は手動でなされるため人手を要し、さ
らに大容量のコールバンカーを設置する必要があ
つた。また細炭をコンベヤで輸送するために、飛
散した粉塵による環境汚染や作業衛生上の問題も
かかえていた。 Traditionally, fine coal is transported from a coal storage yard to a pulverizer by loading the fine coal onto a conveyor using a bulldozer-like scraper or reclaimer, and then dropping the fine coal from the conveyor's most advanced chute, or tripper, into the required coal bunker. It had been done.
In addition, pulverized coal was transported in a pulverizer by pulverizing the pulverized coal from the coal bunker and transporting the pulverized coal pneumatically from here to the burner by supplying heated air to the pulverizer. . However, with this transportation method, the scrapers and trippers were operated manually, which required manpower, and it was also necessary to install large-capacity coal bunkers. In addition, fine coal was transported by conveyor, which caused environmental pollution and work hygiene problems due to scattered dust.
この発明は、上記のような問題に鑑みてなされ
たものであつて、微細粉炭を自動的にかつ衛生的
に連続輸送し得る輸送方法を提供することを目的
とする。 The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a transportation method that can continuously transport fine powder coal automatically and hygienically.
すなわち、この発明は、貯炭槽の細炭を同槽か
ら微粉砕機に送風機による吸引空気で送るととも
に、微粉砕機にて得られた微粉炭を、微粉砕機か
らブロータンクへ上記送風機による加圧空気で送
り、さらに同タンクからプラグ分離器まで圧縮空
気でプラグ輸送し、同分離器からバーナまで定量
圧送することを要旨とする微細粉炭の空気輸送方
法である。 That is, this invention sends fine coal in a coal storage tank from the tank to a pulverizer using air sucked by a blower, and also sends pulverized coal obtained in the pulverizer from the pulverizer to a blow tank using the blower. This is a pneumatic transportation method for fine pulverized coal, which involves transporting fine coal using compressed air, transporting a plug using compressed air from the same tank to a plug separator, and transporting a fixed amount under pressure from the separator to a burner.
まず、この発明の輸送方法を実施するための輸
送装置について説明する。 First, a transportation device for carrying out the transportation method of the present invention will be explained.
第１図は微細粉炭の空気輸送装置全体を示す。
同装置は、細炭を貯える貯炭槽１と、細炭を微粉
砕する微粉砕機２１と、貯炭槽１から微粉砕機２
１に配された細炭輸送管３１と、微粉炭を貯える
１対のブロータンク４１，４２と、微粉砕機２１
からブロータンク４１，４２に配された微粉炭輸
送管５１と、微粉炭を燃焼するバーナ６１と、ブ
ロータンク４１，４２からバーナ６１に配された
プラグ輸送管７１と、細炭輸送管３１内部を送り
方向に吸気しかつ微粉炭輸送管５１内部に送り方
向に送風する送風機８１と、ブロータンク４１，
４２の底部およびプラグ輸送管７１のブロータン
ク寄りに圧縮空気を供給する圧縮機１０１とを主
体とする。 FIG. 1 shows the entire pneumatic transportation device for fine pulverized coal.
The device consists of a coal storage tank 1 for storing fine coal, a pulverizer 21 for pulverizing the fine coal, and a pulverizer 2 from the coal storage tank 1 to the pulverizer 2.
1, a pair of blow tanks 41 and 42 for storing pulverized coal, and a pulverizer 21.
The pulverized coal transport pipe 51 arranged from the blow tanks 41 and 42 to the burner 61 that burns the pulverized coal, the plug transport pipe 71 arranged from the blow tanks 41 and 42 to the burner 61, and the inside of the fine coal transport pipe 31 a blower 81 that takes in air in the feeding direction and blows air into the pulverized coal transport pipe 51 in the feeding direction, a blow tank 41,
42 and a compressor 101 that supplies compressed air to the bottom of the plug transport pipe 71 near the blow tank.
貯炭層１は、頂部の細炭装入管２と、傾斜底壁
３と、その傾斜下端の水分離溝４と、これに通じ
る槽外の排水溝５を有する。また貯炭槽１の底部
には、これを貫通するように多数の細炭吸引管６
が水平に配されている。各細炭吸引管６は、槽外
の吸気端に吸気弁７を介して吸気口８を有し、槽
外の排気端にて排気弁９を介してヘツダ１０に接
続している。そしてヘツダ１０が細炭輸送管３１
に接続してる。また各細炭吸引管６の吸引端部に
は後述する下部圧縮空気供給管１２８から圧縮空
気送入管１１が配され、排気端部にはサイトグラ
ス１２が設けてある。 The coal storage layer 1 has a fine coal charging pipe 2 at the top, an inclined bottom wall 3, a water separation groove 4 at the lower end of the slope, and a drainage groove 5 outside the tank communicating with this. In addition, a large number of fine coal suction pipes 6 are provided at the bottom of the coal storage tank 1 so as to penetrate therethrough.
are arranged horizontally. Each fine coal suction pipe 6 has an intake port 8 at an intake end outside the tank via an intake valve 7, and is connected to a header 10 via an exhaust valve 9 at an exhaust end outside the tank. And the header 10 is the fine coal transport pipe 31
I'm connected to Further, a compressed air supply pipe 11 from a lower compressed air supply pipe 128 to be described later is arranged at the suction end of each fine coal suction pipe 6, and a sight glass 12 is provided at the exhaust end.
各細炭吸引管６は、第２図、第４図に示すよう
に、槽内部に長さ方向に所要間隔おきに両側に側
方突出状の多数の分枝管１３を有する。各分枝管
１３は、頂部、側部および斜下部に長さ方向に所
要間隔おきにそれぞれ細炭導入管１４を有する。
また各細炭吸引管６も、頂部および斜下部に長さ
方向に所要間隔おきに細炭導入管１５を有する。 As shown in FIGS. 2 and 4, each fine coal suction tube 6 has a large number of laterally projecting branch tubes 13 on both sides at required intervals in the length direction inside the tank. Each branch pipe 13 has fine charcoal introduction pipes 14 at required intervals in the length direction at the top, side, and diagonally lower part.
Each fine coal suction tube 6 also has fine coal introduction tubes 15 at required intervals in the length direction at the top and diagonally lower part.
細炭輸送管３１は、後流端部にサイトグラス３
２を有する。また微粉砕機２１は入口側に細炭分
離器２２と、その下の計量機２３とを備えてい
る。そして細炭輸送管３１は後流端にて細炭分離
器２２に接続している。 The fine coal transport pipe 31 has a sight glass 3 at its downstream end.
It has 2. Further, the pulverizer 21 is equipped with a fine coal separator 22 on the inlet side and a weighing machine 23 below the fine coal separator 22. The fine coal transport pipe 31 is connected to the fine coal separator 22 at the downstream end.
送風機８１は、細炭分離器２２の頂部から送風
機８１に至る空気吸引管８２と、送風機８１から
微粉砕機２１の底部に至る空気圧送管８３とを有
する。空気吸引管８２は吸気停止弁８４を有し、
また同管８２には吸気弁８５を有する吸気管８６
が配されている。空気圧送管８３は、送風機８１
寄りの圧送停止弁８７と、空気加熱器８８と、こ
れの入口側の制御弁８９とを有する。また制御弁
８９の入口側と空気加熱器８８の出入口側にまた
がつて、制御弁９０を有するパイパス管９１が配
されている。 The blower 81 has an air suction pipe 82 extending from the top of the fine coal separator 22 to the blower 81 and a pneumatic feed pipe 83 extending from the blower 81 to the bottom of the pulverizer 21 . The air suction pipe 82 has an intake stop valve 84;
Further, the same pipe 82 has an intake pipe 86 having an intake valve 85.
are arranged. The air pressure pipe 83 is connected to the blower 81
It has a pressure feed stop valve 87 on the side, an air heater 88, and a control valve 89 on the inlet side thereof. Further, a bypass pipe 91 having a control valve 90 is disposed astride the inlet side of the control valve 89 and the inlet/outlet side of the air heater 88 .
微粉炭輸送管５１も、後流端部にサイトグラス
５２を有し、ブロータンク４１，４２の上に配設
された微粉炭分離器４３に接続している。そし
て、微粉炭分離器４３の底部には上下１対のロー
タリーフイーダ１１６が配設され、同フイーダ１
１６とブロータンク４１，４２の各頂部は、切換
弁４４，４５をそれぞれ有する１対の微粉炭流下
管４６，４７によつて連結されている。また微粉
炭分離器４３の頂部から空気吸引管８２には、切
換弁１１５を有する空気回送管１１６が配され、
他方各ブロータンク４１，４２の頂部近くには、
切換弁４８，４９をそれぞれ有する空気抜き管１
１９，１２０が配されている。さらに１対のブロ
ータンク４１，４２内の各底部寄りには多孔板１
１７がそれぞれ水平に配され、また各頂部内面に
は超音波液面計１１８がそれぞれ配設されてい
る。 The pulverized coal transport pipe 51 also has a sight glass 52 at its downstream end, and is connected to a pulverized coal separator 43 disposed above the blow tanks 41 and 42. A pair of upper and lower rotary leaf feeders 116 is disposed at the bottom of the pulverized coal separator 43.
16 and the tops of the blow tanks 41 and 42 are connected by a pair of pulverized coal flow down pipes 46 and 47 having switching valves 44 and 45, respectively. Further, an air recirculation pipe 116 having a switching valve 115 is disposed from the top of the pulverized coal separator 43 to the air suction pipe 82.
On the other hand, near the top of each blow tank 41, 42,
Air vent pipe 1 each having switching valves 48 and 49
19,120 are arranged. Furthermore, a perforated plate 1 is placed near the bottom of each of the pair of blow tanks 41 and 42.
17 are arranged horizontally, and an ultrasonic liquid level gauge 118 is arranged on the inner surface of each top.
プラグ輸送管７１は、ブロータンク側端部にて
３本に分岐し、各分岐管７２，７３はそれぞれブ
ロータンク４１，４２内に頂部から入つて底壁近
くまで垂下している。そして１対の分岐管７２，
７３の各垂下端は、多孔板１１７を臨むフレア開
口部７４，７５をそれぞれ有し、タンク外部にそ
れぞれ切換弁７６，７７を有する。 The plug transport pipe 71 branches into three pipes at the end on the blow tank side, and each branch pipe 72, 73 enters the blow tanks 41, 42 from the top and hangs down near the bottom wall. and a pair of branch pipes 72,
Each hanging end of 73 has a flared opening 74, 75, respectively, facing the perforated plate 117, and has a switching valve 76, 77, respectively, outside the tank.
圧縮器１０１から１対のブロータンク４１，４
２の各底部に配された下部圧縮空気供給管１２８
は、先端部にて、切換弁１１１，１１２をそれぞ
れ有する１対の分岐管１１３，１１４に分岐し、
これら分岐管１１３，１１４が１対のブロータン
ク４１，４２の各底壁を貫通して、貫通端が各多
孔板１１７を下から臨んでいる。また圧縮機１０
１からプラグ輸送管７１に配された上部圧縮空気
供給管１０２は、先端部にて、切換弁１０３，１
０４をそれぞれ有する１対のプラグ形成用分岐管
１０５，１０６と、やはり切換弁１０７，１０８
をそれぞれ有する１対の流速調整用分岐管１０
９，１１０に分岐している。そして第６図に示す
ように１対の前者の分岐管１０５，１０６はプラ
グ輸送管７１の１対の分岐管７２，７３にそれぞ
れ接続し、また１対の後者の分岐管１０９，１１
０は前者の分岐管１０５，１０６よりややブロー
タンク寄りにてやはりプラグ輸送管７１の１対の
分岐管７２，７３にそれぞれ接続している。また
１対の分岐管７２，７３は、プラグ形成用分岐管
１０５，１０６の接続位置のやや後流側にプラグ
形成用バイパス管１２９を有する。 A pair of blow tanks 41, 4 from the compressor 101
Lower compressed air supply pipe 128 arranged at each bottom of 2
branches into a pair of branch pipes 113 and 114 having switching valves 111 and 112, respectively, at the tip,
These branch pipes 113 and 114 pass through the bottom walls of the pair of blow tanks 41 and 42, and their penetrating ends face each porous plate 117 from below. Also compressor 10
The upper compressed air supply pipe 102 arranged from 1 to the plug transport pipe 71 has a switching valve 103, 1 at its tip end.
A pair of plug-forming branch pipes 105, 106 each having a diameter of 04 and switching valves 107, 108.
A pair of branch pipes 10 for flow rate adjustment, each having
It branches into 9,110. As shown in FIG. 6, the former pair of branch pipes 105 and 106 are connected to the pair of branch pipes 72 and 73 of the plug transport pipe 71, respectively, and the latter pair of branch pipes 109 and 11
0 are connected to a pair of branch pipes 72 and 73 of the plug transport pipe 71, respectively, slightly closer to the blow tank than the former branch pipes 105 and 106. Further, the pair of branch pipes 72 and 73 have a plug forming bypass pipe 129 slightly downstream of the connection position of the plug forming branch pipes 105 and 106.
プラグ輸送管７１は、通常は第１図中の鎖線部
７８に接続し、後流端にて多数本に分岐し、分岐
部７９がボイラ６２の多数のバーナ６１に接続し
ている。ボイラ６２は水管６３、ドラム６４、脱
硝装置６５、燃焼用空気供給管６６およびヒータ
６７を有する。そして燃焼用空気供給管６６は、
開閉弁６８を有する排気管６９を介して空気回送
管１１５に接続している。またプラグ輸送管７１
は、必要に応じて鎖線部７８と遮断して、粉体流
下器１２１を経由してボイラ６２の各バーナ６１
に至る。粉体流下器１２１は、プラグ分離器１２
２と、その下端出口に連通する計量機１２３と、
その下端出口に連通する１対のロータリーフイー
ダ１２４と、その下端出口に連通するエジエクタ
１２５と、プラグ分離器１２２からエジエクタ１
２５に配された空気回送管１２６と、同管１２６
に設けられた送風機１２７とからなる。そしてプ
ラグ分離器１２２の頂部にプラグ輸送管７１が接
続し、エジエクタ１２５から各分岐管７９に微粉
炭圧送管１３０が接続している。 The plug transport pipe 71 is normally connected to a chain line portion 78 in FIG. The boiler 62 has a water pipe 63, a drum 64, a denitration device 65, a combustion air supply pipe 66, and a heater 67. The combustion air supply pipe 66 is
It is connected to the air recirculation pipe 115 via an exhaust pipe 69 having an on-off valve 68 . Also, the plug transport pipe 71
The burners 61 of the boiler 62 are connected to each burner 61 of the boiler 62 via the powder flow device 121 by cutting off from the chain line section 78 as necessary.
leading to. The powder flower 121 is connected to the plug separator 12
2, and a weighing machine 123 communicating with its lower end outlet,
A pair of rotary feeders 124 communicating with the lower end outlet, an ejector 125 communicating with the lower end outlet, and an ejector 1 from the plug separator 122.
The air recirculation pipe 126 arranged in 25 and the same pipe 126
It consists of a blower 127 installed at A plug transport pipe 71 is connected to the top of the plug separator 122, and a pulverized coal pressure transport pipe 130 is connected from the ejector 125 to each branch pipe 79.
上記構造の微細粉炭の空気輸送装置において、
専用船から陸揚げされた粒径２〜３mmの細炭は、
細炭装入管２から貯炭槽１内に装入される。槽内
に満たされた細炭は水分を含んでいるが、第３図
に示すように、水分は傾斜底壁をつたつて水分離
溝４に流下し、排水溝５から除去される。こうし
て表面水分を分離された細炭は、細炭導入管１４
から分枝管１３を介して細炭吸引管６に、また細
炭導入管１５から直接細炭吸引管６に流入する。
細炭の輸送停止時には、第５図に示すように、細
炭導入管１４，１５からの流入によつて形成され
た細炭の山の頂点が、細炭導入管１４，１５の流
出端に接して、細炭の流入が停止する。この状態
で送風機８１が作動されると、細炭吸引管６およ
び細炭輸送管３１の内部空気は、送風機８１の方
向に吸引されて減圧せられる。そして管内圧が所
定値以下になると、吸気弁７および排気弁９が自
動的に開いて、細炭吸引管６および細炭輸送管３
１内の空気流の流速は、細炭を輸送できる値まで
高まる。こうして細炭は貯炭槽１から微粉砕機２
１に備付けられた分離器２２まで吸引空気輸送に
よつて送られる。 In the pneumatic transportation device for fine powder coal having the above structure,
Fine coal with a grain size of 2 to 3 mm is unloaded from a special ship.
Fine coal is charged into the coal storage tank 1 through a charging pipe 2. The fine coal filled in the tank contains moisture, but as shown in FIG. 3, the moisture flows down the inclined bottom wall into the water separation groove 4 and is removed from the drainage groove 5. The fine coal from which the surface moisture has been separated is transported to the fine coal introduction pipe 14.
From there, the fine coal flows into the fine coal suction pipe 6 via the branch pipe 13, and directly from the fine coal introduction pipe 15 into the fine coal suction pipe 6.
When transport of fine coal is stopped, as shown in FIG. At this point, the inflow of fine coal stops. When the blower 81 is operated in this state, the air inside the fine coal suction pipe 6 and the fine coal transport pipe 31 is sucked in the direction of the blower 81 and the pressure is reduced. When the pipe internal pressure falls below a predetermined value, the intake valve 7 and the exhaust valve 9 are automatically opened, and the fine coal suction pipe 6 and the fine coal transport pipe 3 are opened.
The velocity of the air flow within 1 increases to a value that allows fine coal to be transported. In this way, fine coal is transferred from the coal storage tank 1 to the pulverizer 2.
It is sent by suction pneumatic transport to a separator 22 installed in 1.
なお、細炭の流動はサイトグラス１２，３２を
通して確認される。また多数の細炭吸引管６すべ
てを同時に使用すると、ヘツダ１０および細炭輸
送管３１が詰まるおそれがあるので、吸気弁７と
排気弁９を各細炭吸引管６ごとに順次開いて、各
管６を順次使用するとよい。さらに長期間輸送停
止がつづくと、細炭吸引管６、分岐管１３、細炭
導入管１４，１５、ヘツダ１０および細炭輸送管
３１の内面に細炭が付着して輸送困難をきたすお
それがあるので、細炭吸引管６に圧縮空気送入管
１１から定期的に圧縮空気を送込んで、各管内の
掃除を行なう。 Note that the flow of fine coal is confirmed through the sight glasses 12 and 32. Furthermore, if all the fine coal suction pipes 6 are used at the same time, there is a risk that the header 10 and the fine coal transport pipe 31 will become clogged. It is preferable to use the tubes 6 one after the other. If transportation is stopped for an even longer period of time, fine coal may adhere to the inner surfaces of the fine coal suction pipe 6, branch pipe 13, fine coal introduction pipes 14, 15, header 10, and fine coal transport pipe 31, causing transportation difficulties. Therefore, compressed air is periodically fed into the fine coal suction pipe 6 from the compressed air supply pipe 11 to clean the inside of each pipe.
細炭は細炭分離器２２によつて輸送用空気と分
離され、計量機２３に流下し、計量後微粉砕機２
１に送入される。微粉砕機２１において、粒径２
〜３mmの細炭は流径約75μの微粉炭に粉砕され
る。 The fine coal is separated from the transportation air by the fine coal separator 22, flows down to the weighing machine 23, and after being weighed, it is sent to the pulverizer 2.
1. In the pulverizer 21, the particle size 2
The ~3 mm fine coal is ground into pulverized coal with a flow diameter of approximately 75μ.
他方、細炭分離器２２において細炭と分離され
た輸送用空気は、空気吸引管８２を経て送風機８
１に吸込まれると同時に、送風機８１によつて空
気圧送管８３に吐出される。この加圧空気は空気
加熱器８８で加熱されて微粉砕機２１に送入され
る。空気の加熱温度は、細炭の揮発成分の割合や
微粉砕機の構造などにより決定され、空気加熱器
８８の制御は制御弁８９，９０の調節によりなさ
れる。なお、吸気停止弁８４が閉じて細炭輸送が
停止した時に、分離器２２内に滞留している細炭
は、微粉砕機２１での微粉砕のために吹き上げ空
気を必要とするが、この空気は吸気弁８５の調節
によつて吸気管８６から空気吸引管８２に吸込ま
れ、微粉砕機２１に送られる。 On the other hand, the transportation air separated from the fine coal in the fine coal separator 22 passes through the air suction pipe 82 to the blower 8.
At the same time, the air is sucked into the pneumatic pipe 83 by the blower 81. This pressurized air is heated by an air heater 88 and sent to the pulverizer 21. The heating temperature of the air is determined by the proportion of volatile components in the fine coal, the structure of the pulverizer, etc., and the air heater 88 is controlled by adjusting the control valves 89 and 90. Note that when the intake stop valve 84 is closed and fine coal transportation is stopped, the fine coal remaining in the separator 22 requires blowing up air to be pulverized by the pulverizer 21. Air is drawn into the air suction pipe 82 from the intake pipe 86 by adjusting the intake valve 85 and is sent to the pulverizer 21 .
微粉砕機２１にて得られた微粉炭は、加圧空気
によつて微粉炭輸送管５１を経て微粉炭分離器４
３に圧送される。微粉炭の流通はサイトグラス５
２を通して確認される。また微粉炭分離器４３に
おいて微粉炭と分離された加圧空気は、空気回送
管１１５を経て送風機８１に戻される。なお、一
連の空気配管は閉回路になつているため、微粉炭
分離器４３における内圧が所定値を越えると、排
気管６９の開閉弁６８が自動的に開いて、加圧空
気が燃焼用に使用されるか、または系外に放出さ
れる。微粉炭が水分を多く含んでいると、微粉炭
輸送管５１の内面に付着して管詰りをきたすおそ
れがあるが、微粉炭砂機２１に送られる加圧空気
は加熱されているため、微粉炭の水分量は少なく
なされ、輸送は支障なくなされる。 The pulverized coal obtained by the pulverizer 21 is transferred to the pulverized coal separator 4 through the pulverized coal transport pipe 51 by pressurized air.
3. Sight glass 5 for distribution of pulverized coal
Confirmed through 2. Further, the pressurized air separated from the pulverized coal in the pulverized coal separator 43 is returned to the blower 81 via the air recirculation pipe 115. Note that the series of air piping is a closed circuit, so when the internal pressure in the pulverized coal separator 43 exceeds a predetermined value, the on-off valve 68 of the exhaust pipe 69 automatically opens and the pressurized air is used for combustion. used or released outside the system. If pulverized coal contains a lot of moisture, it may adhere to the inner surface of the pulverized coal transport pipe 51 and cause pipe clogging, but since the pressurized air sent to the pulverized coal sander 21 is heated, The water content of the charcoal is kept low, so that it can be transported without any problems.
微粉炭は微粉炭分離器４３によつて輸送用加圧
空気と分離されて上下１対のロータリーフイーダ
１１６によつて下方に送られ、切換弁４４，４５
の操作により一方の微粉炭流下管４６を経て一方
のブロータンク４１に装入される。そのブロータ
ンク４１は切換弁７６および切換弁１１１の閉鎖
により貯蔵状態にある。この場合空気抜き管１１
９の切換弁４８は開いている。微粉炭が一方のブ
ロータンク４１を満すと、超音波液面計１１８に
よつて切換弁４４が閉じて微粉炭の装入が停止す
る。 The pulverized coal is separated from the pressurized air for transportation by the pulverized coal separator 43, and is sent downward by a pair of upper and lower rotary feeders 116, and is then passed through the switching valves 44, 45.
Through this operation, the pulverized coal is charged into one blow tank 41 through one pulverized coal flow down pipe 46. The blow tank 41 is in a storage state due to the closure of the switching valve 76 and the switching valve 111. In this case, air vent pipe 11
The switching valve 48 at No. 9 is open. When one blow tank 41 is filled with pulverized coal, the ultrasonic liquid level gauge 118 closes the switching valve 44 and stops charging the pulverized coal.
他方のブロータンク４２は切換弁７７および切
換弁１１２の開口により排出状態にある。この場
合空気抜き管１２０の切換弁４９は閉じている。
そして圧縮空気は下部供給管１２８の他方の分岐
管１１４から他方のフロータンク４２の底部に供
給されるとともに、上部供給管１０２の他方の分
岐管１０６，１１０からプラグ輸送管７１の他方
の分岐管７３に供給されている。その結果他方の
ブロータンク４２内の微粉炭は、底部の分岐管１
１４からの圧縮空気によつて分岐管７３のフレア
開口部７５から同管内に送込まれ、また第６図に
示すようにタンク上方の分岐管１０６からの圧縮
空気によつて、管内の微粉炭はプラグ形態となさ
れる。こうして形成された微粉炭プラグは、圧縮
空気によつてノズル６１までプラグ輸送される。
輸送速度は流速調整用分岐管１１０からの圧縮空
気によつて調整される。そして他方のブロータン
ク４２内の微粉炭がすべて排出され、一方のブロ
ータンク４１内に微粉炭が満たされると、各弁の
操作によつて一方のブロータンク４１が排出状態
に、また他方のブロータンク４２が貯蔵状態に切
換えられる。このように１対のブロータンク４
１，４２を交互に貯蔵状態と排出状態に切換える
ことにより、微粉炭の連続輸送がなされる。 The other blow tank 42 is in the discharge state due to the openings of the switching valve 77 and the switching valve 112. In this case, the switching valve 49 of the air vent pipe 120 is closed.
Compressed air is supplied from the other branch pipe 114 of the lower supply pipe 128 to the bottom of the other flow tank 42, and from the other branch pipe 106, 110 of the upper supply pipe 102 to the other branch pipe of the plug transport pipe 71. 73. As a result, the pulverized coal in the other blow tank 42 is transferred to the branch pipe 1 at the bottom.
The compressed air from the branch pipe 106 is fed into the branch pipe 73 from the flare opening 75 of the branch pipe 73, and the pulverized coal in the pipe is fed by the compressed air from the branch pipe 106 above the tank as shown in FIG. is in the form of a plug. The pulverized coal plug thus formed is transported to the nozzle 61 by compressed air.
The transport speed is adjusted by compressed air from the flow rate adjusting branch pipe 110. When all of the pulverized coal in the other blow tank 42 is discharged and one blow tank 41 is filled with pulverized coal, one blow tank 41 is brought into the discharge state by operating each valve, and the other blow Tank 42 is switched to the storage state. In this way, a pair of blow tanks 4
1 and 42 are alternately switched between storage and discharge states, continuous transport of pulverized coal is achieved.
プラグ輸送管７１で連続輸送されて来た微粉炭
プラグは粉体流下器１２１に入る。そして、同プ
ラグはプラグ分離器１２２において輸送用空気と
分離され、計量機１２３によつて定量的にロータ
リーフイーダ１２４に流下し、これによつてエジ
エクタ１２５に送られる。エジエクタ１２５には
分離器１２２からの空気が送風機１２７によつて
圧送されており、この加圧空気によつて微粉炭は
圧送管１３０を経てバーナ６１に空気輸送され
る。 The pulverized coal plug that has been continuously transported by the plug transport pipe 71 enters the powder flower 121. Then, the plug is separated from transportation air in a plug separator 122, quantitatively flows down to a rotary leaf feeder 124 by a weighing machine 123, and is thereby sent to an ejector 125. Air from the separator 122 is forced into the ejector 125 by a blower 127, and the pulverized coal is air-transported to the burner 61 via the pressure pipe 130 by this pressurized air.
この発明による微細粉炭の空気輸送方法は、以
上のとおり構成されているので、細炭を貯炭槽か
ら微粉砕機を経てここで微粉炭化後ブロータンク
を経てバーナまで自動的にかつ連続的に輸送する
ことができる。したがつてこの発明による輸送方
法では人手が全く必要でない上に、従来技術のよ
うにコンベアが必要でないため粉塵による環境汚
染や衛生上の問題をまねくおそれがなく、また上
記のように貯炭槽からバーナまで一貫した連続輸
送がなし得るため、従来のように細炭を一旦貯蔵
しておくための大容量のコールバンカーを設置す
る必要がなく、設備の設置スペースおよび設備費
の点で利点が大きい。さらに細炭輸送用の吸引空
気の生成と微粉炭輸送用の加圧空気の生成とを一
台の送風機で行なうので、この点でも設備費の節
減が果たせる上に、微粉炭の輸送を加圧空気で行
なうので、微粉炭の乾燥も併せて行なうことがで
きる。特にこの発明ではブロータンクからプラグ
分離器まで微粉炭を圧縮空気でプラグ輸送するの
で、輸送圧の損失が少なく、そのため微粉炭の長
距離輸送が可能である。さらに微粉炭をプラグ分
離器からバーナまで定量圧送するので、バーナへ
の微粉炭の供給量を一定に保つことができ、その
結果バーナの火炎を安定性のよいものとすること
ができる。 The pneumatic transportation method for fine pulverized coal according to the present invention is configured as described above, so that the fine coal is automatically and continuously transported from the coal storage tank through the pulverizer, where it is pulverized and carbonized, and then through the blow tank to the burner. can do. Therefore, the transportation method according to the present invention does not require any human labor, and unlike the prior art, it does not require a conveyor, so there is no risk of environmental pollution or hygiene problems caused by dust, and as mentioned above, the transportation method does not require any human labor. Since continuous and consistent transportation to the burner is possible, there is no need to install a large-capacity coal bunker to temporarily store fine coal as in the past, which is a major advantage in terms of equipment installation space and equipment costs. . Furthermore, since a single blower is used to generate suction air for transporting fine coal and pressurized air for transporting pulverized coal, equipment costs can be reduced in this respect as well. Since the process is carried out using air, the pulverized coal can also be dried at the same time. In particular, in this invention, since pulverized coal is transported by plug from the blow tank to the plug separator using compressed air, there is little loss in transport pressure, and therefore pulverized coal can be transported over long distances. Furthermore, since the pulverized coal is fed under pressure from the plug separator to the burner, the amount of pulverized coal supplied to the burner can be kept constant, and as a result, the flame of the burner can be made stable.
図面はこの発明の実施に使用される微細粉炭の
空気輸送装置を示すもので、第１図は同装置全体
を示すフロー図、第２図は貯炭槽の水平断面図、
第３図は第１図中のＡ部拡大図、第４図イ，ロは
第２図中のＢ部拡大図およびその側面図、第５図
は第４図中のＣ部拡大図、第６図は第１図中のＤ
部拡大図である。
１……貯炭槽、２１……微粉砕機、３１……細
炭輸送管、４１，４２……ブロータンク、５１…
…微粉炭輸送管、６１……バーナ、７１……プラ
グ輸送管、８１……送風機、１０１……圧縮機、
１２２……プラグ分離器、１２３……計量機、１
２５……エジエクタ。
The drawings show a pneumatic transportation device for fine pulverized coal used in carrying out the present invention; FIG. 1 is a flow diagram showing the entire device; FIG. 2 is a horizontal sectional view of a coal storage tank;
Figure 3 is an enlarged view of part A in Figure 1, Figure 4 A and B are enlarged views of part B in Figure 2 and its side view, Figure 5 is an enlarged view of part C in Figure 4, Figure 6 is D in Figure 1.
It is an enlarged view of the part. 1... Coal storage tank, 21... Fine pulverizer, 31... Fine coal transport pipe, 41, 42... Blow tank, 51...
...pulverized coal transport pipe, 61 ... burner, 71 ... plug transport pipe, 81 ... blower, 101 ... compressor,
122...Plug separator, 123...Measuring machine, 1
25...Ejiekta.
Claims (1)
よる吸引空気で送るとともに、微粉砕機にて得ら
れた微粉炭を、微粉砕機からブロータンクへ上記
送風機による加圧空気で送り、さらに同タンクか
らプラグ分離器まで圧縮空気でプラグ輸送し、同
分離器からバーナまで定量圧送することを特徴と
する微粉炭の空気輸送方法。1. Sending the fine coal in the coal storage tank from the tank to the pulverizer using suction air from a blower, and sending the pulverized coal obtained by the pulverizer from the pulverizer to the blow tank using pressurized air from the blower, Furthermore, the pneumatic transportation method for pulverized coal is characterized by transporting the plug from the same tank to a plug separator using compressed air, and from the separator to a burner under pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346181A JPS57117415A (en) | 1981-01-12 | 1981-01-12 | Method of conveying finely-pulverized coal by air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346181A JPS57117415A (en) | 1981-01-12 | 1981-01-12 | Method of conveying finely-pulverized coal by air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57117415A JPS57117415A (en) | 1982-07-21 |
| JPS6151206B2 true JPS6151206B2 (en) | 1986-11-07 |
Family
ID=11557957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP346181A Granted JPS57117415A (en) | 1981-01-12 | 1981-01-12 | Method of conveying finely-pulverized coal by air |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57117415A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332490B (en) * | 2013-06-28 | 2015-06-17 | 中冶南方工程技术有限公司 | Converter gas dry dedusting fine dust pneumatic transport system |
| CN103332494B (en) * | 2013-06-28 | 2015-06-17 | 中冶南方工程技术有限公司 | Pneumatic conveying method for removing dust and crude ash in dry process of converter once flue gas |
| CN103318648B (en) * | 2013-06-28 | 2015-04-15 | 中冶南方工程技术有限公司 | Converter gas dry-method dedusting cinder pneumatic conveying method |
| CN103332458B (en) * | 2013-06-28 | 2015-09-02 | 中冶南方工程技术有限公司 | The thin grey air-transport system of a kind of dry dedusting of converter |
| CN103640896B (en) * | 2013-09-12 | 2016-02-10 | 华能（天津）煤气化发电有限公司 | A kind of long life dense phase pulverized coal upper conveyor |
| CN104512725A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Boiler dust removal pneumatic transmission system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117414A (en) * | 1981-01-08 | 1982-07-21 | Hitachi Zosen Corp | Method of conveying finely-pulverized coal by air |
-
1981
- 1981-01-12 JP JP346181A patent/JPS57117415A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117414A (en) * | 1981-01-08 | 1982-07-21 | Hitachi Zosen Corp | Method of conveying finely-pulverized coal by air |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57117415A (en) | 1982-07-21 |
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