JPS5980319A - Storage tank of high concentration aqueous coal slurry - Google Patents
Storage tank of high concentration aqueous coal slurryInfo
- Publication number
- JPS5980319A JPS5980319A JP57189279A JP18927982A JPS5980319A JP S5980319 A JPS5980319 A JP S5980319A JP 57189279 A JP57189279 A JP 57189279A JP 18927982 A JP18927982 A JP 18927982A JP S5980319 A JPS5980319 A JP S5980319A
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- coal
- water slurry
- coal slurry
- aqueous coal
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は沈降粒子を有するスラリ貯槽に応用できる石炭
Ｉ％濃度水スラリ貯槽に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coal I% water slurry storage tank that can be applied to a slurry storage tank with settled particles.
石炭昌濃度水スラリとは、石炭ＡＯ〜ｇｓ重量％、界面
活性剤０．０ ／ −３： ０重量％対石炭粉末１水分
が残りの重量％で構成されるスラリ燃料である。石炭濃
度、界面活性剤添加率は、石炭の榎類によって異なって
くる。石炭高濃度水スラリ中の石炭粒子は２００メツシ
ュバス７０〜９０％程度の粒度であるが、長期間貯槽中
に石炭篩濃度水スラリを貯蔵しておくと、石炭粒子が沈
降し、序々に貯槽下部の石炭高濃度水スラリの石炭濃度
が上昇し、使用に際し貯槽の正しい各時間毎の石炭濃度
が不明で不便である。The coal-concentrated water slurry is a slurry fuel composed of coal AO~gs wt%, surfactant 0.0/-3:0 wt%, coal powder 1 water with the remaining weight%. Coal concentration and surfactant addition rate vary depending on the type of coal. The coal particles in the highly concentrated coal water slurry have a particle size of about 70 to 90% of the 200 mesh bath, but if the coal sieve concentrated water slurry is stored in a storage tank for a long time, the coal particles will settle and gradually fall to the bottom of the storage tank. The coal concentration of the high coal concentration water slurry increases, and it is inconvenient that the correct coal concentration for each hour in the storage tank is unknown during use.
このような背景より石炭粒子の沈降の初期は硬く堆積せ
ず（長期間撹拌せずに放置しておくと硬く堆積し、再び
攪拌してももとの石炭濃度の石炭高濃度水スラリにもど
らないことが多い）、攪拌してやると再ひもとの石炭濃
度の石炭高濃度水スラリにもどるので、このようにする
ことを目的とした攪拌機付石炭尚濃度水スラリ貯檜が従
来第１図の如く提案されている。Due to this background, coal particles do not accumulate hard at the initial stage of sedimentation (if left without stirring for a long period of time, they will accumulate hard, and even if stirred again, they will return to the original high coal concentration water slurry). When stirred, it returns to the high coal concentration water slurry with the same coal concentration as when it was re-stirred.For this purpose, a coal high concentration water slurry storage hinoki with an agitator was conventionally used, as shown in Figure 1. Proposed.
第１図において鋼板又は樹脂等の材質より出来ている槽
（１）に、支持具［，２１Ｆ、？Ｊにより支持された軸
［４Ｑの先端に、石炭高濃度水スラリの液面下に攪拌翼
（３）が具備された攪拌機が取り付けられている。この
攪拌翼（勾で水流（旬の如き上昇流を起こし、石炭高濃
度水スラリ中の石炭粒子の沈降したものを上昇せしめ、
貯槽中の石炭高濃度水スラリの石炭濃度を出来るだけ初
期の状態に保つようにしている。（７）は電動機で、駆
動伝導装置＆Ｉｌ？ｌを介して軸［ｔＩ］を回転駆動さ
せる役目をしている。In FIG. 1, a support [, 21F, ? A stirrer equipped with stirring blades (3) below the surface of the coal-rich water slurry is attached to the tip of the shaft [4Q] supported by J. This stirring blade (gradient) causes an upward flow of water, causing the sedimented coal particles in the highly concentrated coal water slurry to rise.
The coal concentration of the high coal concentration water slurry in the storage tank is kept as much as possible at the initial state. (7) is an electric motor, drive transmission device &Il? It serves to rotationally drive the shaft [tI] via l.
また貯槽（／ｌには貯槽内外比σＤ差比をなくすため、
圧力逃し管（ワ）が取り付けられ、石炭高濃度水スラＩ
Ｊ （１０）の入口管Ｃ１／） 、貯蔵後の石炭高濃度
水スラＩＪ （／２）の取出ｙ （／Ｊ）も合せ取り付
けら１１ている。In addition, in the storage tank (/l, in order to eliminate the storage tank inside and outside ratio σD difference ratio,
A pressure relief pipe (wa) is installed and the coal high concentration water slurry I
The inlet pipe C1/) of J (10) and the take-out y (/J) of the highly concentrated coal water slug IJ (/2) after storage are also installed.
第３図に従来の撹拌動力と沈降層の実験例を示す。即ち
、石層高濃度水スラリｔＯｎ当りに与えるべき攪拌翼に
よる撹拌動力を変化させ、経過時間（Ｈｒ）と沈降層（
ｍ）の関係は、ｉ 、？ ＫＷ／石炭尚濃度水スラリｔ
ｏｎ以上の攪拌動力を与えると沈降層が成長せず、／
ＫＷ／ｌｏｎでは沈降層が発生していることが分る。し
かし貯槽が大きくなればなるほど、攪拌設備容量は大き
くなり経済性の乏しいものとなる。また攪拌設備容量が
大きいということは、そのぶん貯槽構造が堅牢なもので
なくてはならなかった。Figure 3 shows an experimental example of conventional stirring power and sedimentation layer. That is, by changing the stirring power by the stirring blade that should be applied per stone layer high concentration water slurry tOn, the elapsed time (Hr) and the sedimentation layer (
The relationship of m) is i, ? KW/coal concentration water slurry
If agitation power higher than on is applied, the sediment layer will not grow, /
It can be seen that a sedimentary layer is generated at KW/lon. However, the larger the storage tank, the larger the capacity of the stirring equipment, which becomes less economical. In addition, the large capacity of the stirring equipment required a correspondingly robust storage tank structure.
前述の第１図に示すような回転翼型攪拌機で石炭高濃度
水スラリ中σ９石炭粒子の沈降を最小限にとどめようと
すると、大きな撹拌設備容量が必要となり、また大きな
攪拌設備容量が貯槽に（ｎｆｆわるということは貯槽構
造を堅牢なものとしなければならないこととなり、いづ
れにしても経済的貯槽とは云えなかった。In order to minimize the sedimentation of σ9 coal particles in a highly concentrated coal water slurry using a rotary vane type agitator as shown in Figure 1 above, a large agitation equipment capacity is required, and a large agitation equipment capacity is required for storage tanks. (The change in nff meant that the storage tank structure had to be made more robust, and in any case it could not be called an economical storage tank.
本発明は前記従来の欠点を解消するために提案されたも
ので、石炭高濃度水スラリ貯僧において、底部に沈降石
炭粒子を回収する底板を有し、沈降石炭粒子を含む底部
石炭高濃度水スラリのみを循環ポンプにより貯槽上部へ
戻し、同貯情上部に取り付けられた分配器により貯槽上
部の液部へ全面的に均等、一様に分配せしめて貯槽底部
における沈降層を最小限に押え、しかも貯槽内部スラリ
濃度が場所により大きく差がつかないようにすることに
より、使用動力を少なくできる経済的な石炭高象度水ス
ラリ貯槽を提供せんとするものである。The present invention has been proposed in order to solve the above-mentioned conventional drawbacks, and is provided with a high concentration coal water slurry reservoir having a bottom plate for collecting settled coal particles at the bottom, and a bottom plate containing high concentration coal particles containing settled coal particles. Only the slurry is returned to the upper part of the storage tank by a circulation pump, and the distributor attached to the upper part of the storage tank distributes it evenly and uniformly over the entire surface to the liquid part of the upper part of the storage tank, thereby minimizing the sedimentation layer at the bottom of the storage tank. Moreover, by preventing the slurry concentration inside the storage tank from differing greatly from place to place, the present invention aims to provide an economical coal high-quality water slurry storage tank that can reduce the amount of power used.
以下本発明の／実施例を図Ｉｍについて説明すると、第
９図及び第Ｓ図は本発明の実施例を示し、槽Ｆ／）の下
部に逆円錐状の石炭粒子集めのための底板（／ダ）を有
し、石炭高濃度水スラリ中の沈降石炭粒子は底板（／ダ
）の斜［Ｍｉに沿って液流（／Ｓ）の如く配管（／幻に
つながる取出し口（１７）に集められ、循環ポンプ（ｉ
ｇ）により配管（１９）を経て分散管（ＸＯ） （ユｌ
）へ送られ、分散管ノズル（２コ）を経て貯槽上部へ均
一に流入させる。なお、底板（／ｌ）に沈降した石炭粒
子をスクレーバの如きかきとり器の併用も考えられる。An embodiment of the present invention will be explained below with reference to Figure Im. Figures 9 and S show an embodiment of the present invention, and an inverted conical bottom plate (/) for collecting coal particles at the bottom of a tank F/). The sedimented coal particles in the highly concentrated coal water slurry are collected in the outlet (17) connected to the piping (/illustration) along the diagonal [Mi of the bottom plate (/da) like a liquid flow (/S). and the circulation pump (i
g) through the pipe (19) to the dispersion tube (XO)
), and uniformly flows into the upper part of the storage tank via two dispersion pipe nozzles. It is also possible to use a scraper such as a scraper to remove coal particles that have settled on the bottom plate (/l).
また配管（／Ａ）を流れる液流（ユ３）中の石炭濃度は
、沈降した石炭粒子を含有するため貯槽中の平均石炭濃
度より高い値を有している。分散管（，２の（２υは第
９図及び第Ｓ図に示すように、上部液面に出来るだけ万
遍無く流し込める配置が望ましい。また分散管（〃）（
コυは支持部材（コダ）（２幻により槽（１）に取り付
けられている。貯槽（１）には貯槽内外圧の差圧をなく
すため、圧力逃し管（９）がとりつけら第１、石炭高１
Ｍ ＩＪｔ水スラリ（ｉｏ）の人口管（／／） 、貯蔵
後の石炭尚濃屋水スラＩＪ’（／、２）の取出管（／３
）も合せ取り伺けられている。Moreover, the coal concentration in the liquid stream (U3) flowing through the pipe (/A) has a value higher than the average coal concentration in the storage tank because it contains settled coal particles. As shown in Figures 9 and S, it is desirable that the dispersion tube (, 2 (2υ) be arranged so that it can be poured as evenly as possible to the upper liquid level.
The tank (1) is attached to the tank (1) by a support member (Koda) (2 parts).The storage tank (1) is equipped with a pressure relief pipe (9) to eliminate the pressure difference between the inside and outside of the tank. Coal height 1
M IJt water slurry (io) artificial pipe (//), coal storage water slurry IJ' (/, 2) extraction pipe (/3
) have also been ordered together.
この場合σつ循環ポンプ（７ｇ）により循環させるべき
液流（Ｊ）と、石炭沈降層の関係例を第６図に示す。第
４図から分るように、沈降層が貯槽底部より成長しはじ
める時間は、循環ポンプ（７ｇ）の循環量が多くなると
遅くなり、遂には沈降層は発生しなくなる。In this case, an example of the relationship between the liquid flow (J) to be circulated by the σ circulation pump (7g) and the coal sedimentation layer is shown in FIG. As can be seen from FIG. 4, the time it takes for the sedimentation layer to start growing from the bottom of the storage tank becomes slower as the circulation rate of the circulation pump (7g) increases, and eventually the sedimentation layer no longer forms.
これは石炭粒子の石炭高濃度水スラリ中での沈降速度以
上に、循環ポンプ（７ｇ）て下部より上部へ、貯槽平均
石炭濃度より高濃度になった下部の石炭高濃度水スラリ
を戻してやれば・下部に於ける石炭高濃度水スラＩＪ
ｇつ石炭濃度は沈降層が成長するまでに上昇しないこと
を示している。This can be done by using a circulation pump (7 g) to return the high-concentration coal water slurry at the bottom, which has a higher concentration than the storage tank average coal concentration, from the lower part to the upper part at a rate higher than the sedimentation rate of the coal particles in the high-concentration coal water slurry.・High-concentration coal water slurry IJ at the bottom
This indicates that the coal concentration does not increase until the sedimentation layer grows.
ここで循環ポンプ（７ｇ）の循環’ｌ（Ｅ １ｍについ
て述べる。石炭旨濃度水スラリ中での石炭粒子の沈降に
より、沈降層成長速度Ｕ（ａｍ／Ｈｒ）で上昇するとす
ると、循環ポンプ（７ｇ）で循環すべき液鴫はＵ（酎／
１（ｒ）・Ａ（−）以上となる（（旦しＡ：貯槽断（…
槓）。Here, we will discuss the circulation 'l (E 1m) of the circulation pump (7g).Assuming that the sedimentation layer grows at a rate of U (am/Hr) due to the sedimentation of coal particles in the coal-concentrated water slurry, the circulation pump (7g) ) The liquid droplet to be circulated is U (chu/
1(r)・A(-) or more ((Danshi A: Storage tank disconnected (...
槓).
７例として下記の如き仕様の貯槽の場合の・沈降層を成
長させない２つの方式、即ち従来σつ回転１４璧攪拌機
方式と、本発明方式の動力比較を行なうと次のようにな
る。As an example, in the case of a storage tank with the following specifications, the following is a comparison of the power of two methods that do not allow the growth of a sedimentary layer, namely, the conventional σ-rotation 14-wheel stirrer method and the present invention method.
貯槽寸法二３０ｍ直径Ｘ Ａ Ｏｍ高さ石炭尚濃度水ス
ラ＋Ｊニア０％（比重： ／、３／）炭種 ；大同炭
従来σ〕回転翼型撹拌機σつ場合
第３ 図、ｊ： ’ｌ、 ”Ｘ （３０ｍ ）” Ｘ
Ａ Ｏｍ Ｘ Ｉ Ｊ ／ ｔｏｎ／ｍ”グ
Ｘ ｉ 、？ＫＷ／Ｔｏｎ ＝７．１．／ ９０ＫＷ本
光明万式の場合
第４図より、 Ｕ”：；； ／ ／ ｓｎ＋／ ！；
ＯＨｒ＝ ０．２コミｒｍ／Ｈｒ循Ｊ、質７ｃＣｔｘｌ
はＵＡ−θ２２ ｍ／ＨｒＸ ｌ／／ ０００ ｍ／ｍ
ｘ’！：ｘ ＜ ３ｏ・）′
＝θ／ ３ ！； ｒｒｉ’／）（ｒ以上必要で翫貯槽
尚さｔ、ｏｍを考慮して
０、７４３ ×、０． ／ 今Ｓ ｍ”ｊＨｒ Ｘ、’
、、／イｂ Ｏｉ（ｒ／ｍｉｎ’Ｘ Ａ Ｏｍ Ｘ、
１３−４η（ポンプ効率二θ］とする）
一；０．３．３／ＫＷ と回転翼型４１拌機の場合に比
べて小さい。Storage tank dimensions 2 30 m Diameter l, “X (30m)”
A Om ;
OHr = 0.2 cmrm/Hr circulation J, quality 7cCtxl
is UA-θ22 m/HrX l// 000 m/m
x'! :x <3o・)' = θ/ 3! ; rri'/) (If more than r is required, the storage tank should be taken into consideration, t, om, 0,743 ×, 0. / Now S m"jHr X,'
,,/Ib Oi(r/min'X A Om X,
13-4η (pump efficiency 2θ) 1; 0.3.3/KW, which is smaller than that of the rotary vane type 41 stirrer.
これらのテークは小スケールσつ実験規模より実機を推
定しているが、従来の回転翼型撹拌機の場合は・貯檀全
ＭＳに撹拌作用を及ぼすのに比べ、本発明方式は、石炭
高濃度水スラリ中の石炭粒子の沈降した部分のみを貯槽
上部へもとし・沈降層を発生させず攪拌効果も同時に得
るため、動力は少くて済むことは容易に理解されるであ
ろう。These takes are estimated from the actual machine based on the small-scale σ experimental scale, but compared to the conventional rotary vane type mixer, which exerts a stirring action on the entire storage MS, the method of the present invention reduces the coal price. It is easy to understand that only the settled part of the coal particles in the concentrated water slurry is sent to the upper part of the storage tank, and a stirring effect is obtained at the same time without generating a sedimentary layer, so that less power is required.
第１図は従来の撹拌機付石炭高濃度水スラリ貯槽の正面
断面図、第２図は半分のみ示す第１図のＡ −Ａ断面図
、第３図は第１図の場合の経過時間と沈降層と０．）関
係を示す線図、第９図は本発明の実施例を示す石炭ｉ％
ｔｋ度水スラリ貯槽の正ｌ断面図、第５図は半分のみ
示す第７図のＢ−Ｂ断面図、第６図は第７図の場合の経
過時間と沈降層とσＪ関係を示す線図である。
図の主要部分の説明
ｌ・・・貯 槽 ／ｉ−底 板／Ｋ・・・鎖環
ポンプ −〇、コト・・分散管（分配器）ユλ・・・
分散管ノズル（分配器）
特ｇに出願人 三菱車工業株式会社
１１Figure 1 is a front sectional view of a conventional highly concentrated coal water slurry storage tank with an agitator, Figure 2 is a sectional view taken along line A-A in Figure 1 showing only half of the tank, and Figure 3 shows the elapsed time in the case of Figure 1. Sedimentation layer and 0. ) Diagram showing the relationship, Figure 9 shows the example of the present invention.
tk degree water slurry storage tank, Fig. 5 is a BB sectional view of Fig. 7 showing only half, and Fig. 6 is a diagram showing the elapsed time, sedimentation layer, and σJ relationship in the case of Fig. 7. It is. Explanation of the main parts of the diagram l...Storage tank /i-Bottom plate/K...Chain ring pump -〇、Things...Dispersion pipe (distributor) unit λ...
Dispersion tube nozzle (distributor) Special applicant: Mitsubishi Motors Corporation 11
Claims (1)
沈降石炭粒子を回収する底板、同沈降石炭粒子を含む底
部石炭高濃度水スラリのみを貯槽下部へ戻す循環ポンプ
、同沈降石炭粒子を含む底部石炭高濃度水スラリをＷＪ
′槽上部の液部へ全１（１１的に均等、一様に分配せし
める前記貯槽上Ｍｌ（に取り付けられた分配器とよりな
ることを符徽とする石炭高濃度水スラリ貯槽。In a highly concentrated coal water slurry storage tank, a bottom plate provided at the bottom of the cypress to collect settled coal particles, a circulation pump that returns only the highly concentrated coal water slurry to the lower part of the storage tank, and a bottom plate that contains the settled coal particles. WJ high concentration coal water slurry
'A highly concentrated coal water slurry storage tank comprising a distributor attached to the upper part of the storage tank for evenly and uniformly distributing it to the liquid part in the upper part of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57189279A JPS5980319A (en) | 1982-10-29 | 1982-10-29 | Storage tank of high concentration aqueous coal slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57189279A JPS5980319A (en) | 1982-10-29 | 1982-10-29 | Storage tank of high concentration aqueous coal slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5980319A true JPS5980319A (en) | 1984-05-09 |
Family
ID=16238652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57189279A Pending JPS5980319A (en) | 1982-10-29 | 1982-10-29 | Storage tank of high concentration aqueous coal slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5980319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100772458B1 (en) | 2006-11-14 | 2007-11-01 | 주식회사 호국이엔지 | An apparatus for mixing the water cleaning medicine with the raw water in water supply facilities |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324516B1 (en) * | 1970-04-02 | 1978-07-21 |
-
1982
- 1982-10-29 JP JP57189279A patent/JPS5980319A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324516B1 (en) * | 1970-04-02 | 1978-07-21 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100772458B1 (en) | 2006-11-14 | 2007-11-01 | 주식회사 호국이엔지 | An apparatus for mixing the water cleaning medicine with the raw water in water supply facilities |
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