JPS644560B2 - - Google Patents
Info
- Publication number
- JPS644560B2 JPS644560B2 JP17460780A JP17460780A JPS644560B2 JP S644560 B2 JPS644560 B2 JP S644560B2 JP 17460780 A JP17460780 A JP 17460780A JP 17460780 A JP17460780 A JP 17460780A JP S644560 B2 JPS644560 B2 JP S644560B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- liquid
- specific gravity
- pulverized coal
- slurry fuel
- 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 68
- 239000007788 liquid Substances 0.000 claims description 46
- 230000005484 gravity Effects 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000003250 coal slurry Substances 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000006477 desulfuration reaction Methods 0.000 claims description 11
- 230000023556 desulfurization Effects 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 9
- 230000003009 desulfurizing effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 8
- 239000010802 sludge Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 238000004062 sedimentation Methods 0.000 description 19
- 239000007787 solid Substances 0.000 description 8
- 239000010419 fine particle Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Landscapes
- Liquid Carbonaceous Fuels (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
この発明は取扱い容易な沈降の少ない石炭スラ
リー燃料を製造する方法及びその装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and apparatus for producing a coal slurry fuel that is easy to handle and has little sedimentation.
＜従来の技術及びその問題点＞
最近、火力発電所を中心に、石油に代わり石炭
の利用が活発になつている。しかし、固体燃料で
ある石炭などはハンドリングが困難であり、輸送
費が石炭の価格に及ぼす影響も大きい。そこで、
石炭をスラリ化し、流体として取り扱えるように
する技術の開発が盛んに行なわれている。<Conventional technology and its problems> Recently, coal has been increasingly used in place of oil, mainly in thermal power plants. However, solid fuels such as coal are difficult to handle, and transportation costs have a large impact on coal prices. Therefore,
BACKGROUND ART There is active development of technology for turning coal into a slurry so that it can be handled as a fluid.
石炭の流体化技術の一つに重油と石炭の混合物
であるCOM（Coal Oil Mixture）、水と石炭の混
合物であるCWM（Coal Water Mixture）等があ
る。水などを担体に分散することにより石炭をス
ラリに転換する従来技術の一つとして特開54―
16511がある。ここに開示される内容は分散剤と
して界面活性剤を使用し石炭を水中で分散させる
方法が中心で石炭の粒径の調整及び微粉粒子の必
要性については記述されていない。また特開53―
581にも石炭と水スラリの製造方法が開示されて
いる。この特許公報明細書によれば石炭の粒度構
成は200メツシユパス量50％以上と記述されてい
るのみである。 One of the coal fluidization technologies is COM (Coal Oil Mixture), which is a mixture of heavy oil and coal, and CWM (Coal Water Mixture), which is a mixture of water and coal. Unexamined Japanese Patent Publication No. 54-54-1 is a conventional technology for converting coal into slurry by dispersing water etc. in a carrier.
There are 16511. The content disclosed herein focuses on a method of dispersing coal in water using a surfactant as a dispersant, and does not describe the adjustment of the particle size of coal or the necessity of fine powder particles. Also, JP-A-53-
581 also discloses a method for producing a coal and water slurry. According to this patent specification, the particle size structure of the coal is only described as having a 200 mesh pass amount of 50% or more.
しかし、これらの従来技術は次のような問題点
がある。水中における石炭の分散の方法を分散剤
のみに依存しており、石炭の粒径及び分散液
（水）の比重の調整は何んら行なわれていない。
石炭の比重は石炭によつても異なるが1.3〜1.8あ
るのに対して水の比重は1.0と小さいことは言う
までもなく、水又は液中（油など）で比重の大き
い石炭粒子は容易に沈降分離してしまうことが確
認されている。石炭粒子は沈降するので輸送管内
の水又は油と微粉炭の混合物の流速をあげてその
輸送中の沈降堆積を防止している。しかし貯槽に
受け入れられ静置するときは分離し微粉炭の堆積
ができその取扱いに困難を生じ、その解決が要望
されているところである。この分離しやすい性質
は一方において輸送管で渦流を生ずるところ、流
速の変化するところでは微粉の分離堆積を生じ問
題を生ずる。 However, these conventional techniques have the following problems. The method of dispersing coal in water relies only on a dispersant, and no adjustment is made to the particle size of coal or the specific gravity of the dispersion liquid (water).
The specific gravity of coal is 1.3 to 1.8, although it varies depending on the coal, while the specific gravity of water is as low as 1.0. Needless to say, coal particles with a high specific gravity in water or liquids (such as oil) easily settle and separate. It has been confirmed that this happens. Since coal particles settle, the flow rate of the mixture of water or oil and pulverized coal in the transport pipe is increased to prevent sedimentation and accumulation during transport. However, when the coal is received in a storage tank and left undisturbed, it separates and pulverized coal is deposited, making it difficult to handle, and a solution to this problem is desired. On the one hand, this easy-to-separate property causes problems such as vortices in the transport pipe and separation and accumulation of fine powder in areas where the flow velocity changes.
以上のような沈降防止のため分散剤を使用する
方法が前記した特開54―16511、特開53―581で開
示されているが、石炭粒子の沈降防止には分散剤
の添加のみでは不充分であることが確認されてい
る。 A method of using a dispersant to prevent sedimentation as described above is disclosed in the above-mentioned JP-A-54-16511 and JP-A-53-581, but adding a dispersant alone is not sufficient to prevent sedimentation of coal particles. It has been confirmed that
上記従来技術は石炭スラリーの安定性、貯蔵性
及び高品質化の点について配慮がされておらず、
石炭スラリーの沈降、凝集による輸送トラブル、
品質の悪化という点で問題があつた。 The above conventional technology does not take into consideration the stability, storability, and quality improvement of coal slurry.
Transportation troubles due to sedimentation and agglomeration of coal slurry,
There was a problem in terms of quality deterioration.
＜発明の目的＞
本発明の目的は、これらの従来技術の欠点をな
くし、安定性の高い石炭スラリの製造方法とその
装置を提供するにある。<Object of the Invention> An object of the present invention is to eliminate the drawbacks of these conventional techniques and to provide a highly stable coal slurry production method and apparatus.
＜問題点を解決するための手段＞
上記目的は石炭スラリの製造においてまず極く
微細な粒子（５〜10μｍ以下の石炭、脱硫剤等）
を水又は油中で混合し、液中でコロイド状な液体
に作製した後、そのコロイド状に微粉炭を加えて
混合撹拌することにより達成される。<Means to solve the problem> The above purpose is to first produce extremely fine particles (coal of 5 to 10 μm or less, desulfurization agent, etc.) in the production of coal slurry.
This is achieved by mixing in water or oil to form a colloidal liquid in the liquid, then adding pulverized coal to the colloidal form and mixing and stirring.
水及び油に混合、撹拌した微細な固体粒子（石
炭、脱硫剤、スラツジ等）は水及び油とのコロイ
ド状液を作製し、コロイド状液の比重及び粘度の
増加により、コロイド状液に添加する微粉炭の沈
降が改善され安定な石炭スラリが作製される。 Fine solid particles (coal, desulfurization agent, sludge, etc.) mixed and stirred in water and oil create a colloidal liquid with water and oil, and are added to the colloidal liquid by increasing the specific gravity and viscosity of the colloidal liquid. This improves the sedimentation of pulverized coal and creates a stable coal slurry.
＜実施例＞
第１図にこの発明の実施に使用する装置の工程
のフローを示す。10〜５ミクロン以下の微粉炭は
ホツパ１に収容されフイーダ〔ロータリフイー
ダ、又はベーレーフイーダ（商品名）〕２により
計量器３におくられ計量されて混合機４に送られ
る。水又は油又は液は管路５より流量計６を経由
し第１混合機４に送られる。第１混合機４で微粉
炭の比重とほぼ等しい液が形成され、その液は管
路７により第２混合機８（送出ポンプを兼用又は
付属する）に送られる。70〜100ミクロンの微粉
炭はホツパ１Ａからフイーダ２Ａにより計量機３
Ａに送られついで第２混合機８で第１混合機から
の液と混合され管路９により貯槽１０に送られ必
要に応じ取り出され燃料として使用される。また
遠隔の貯槽１１に送るには管路１２よりポンプ１
３により輸送することができる。<Example> FIG. 1 shows a process flow of an apparatus used to carry out the present invention. Pulverized coal of 10 to 5 microns or less is stored in a hopper 1 and sent to a measuring device 3 by a feeder (rotary feeder or Boehle feeder (trade name)) 2, where it is weighed and sent to a mixer 4. Water, oil, or liquid is sent from the pipe 5 to the first mixer 4 via a flow meter 6. A liquid approximately equal to the specific gravity of pulverized coal is formed in the first mixer 4, and the liquid is sent through a pipe 7 to a second mixer 8 (which also serves as a delivery pump or is attached). Pulverized coal of 70 to 100 microns is transferred from hopper 1A to feeder 2A by weighing machine 3.
A, the liquid is mixed with the liquid from the first mixer in a second mixer 8, and sent to a storage tank 10 via a pipe 9, where it is taken out and used as fuel if necessary. Also, in order to send to the remote storage tank 11, the pump 1 is connected to the pipe line 12.
3 can be transported.
またホツパ１Ｂには脱硫剤を収容し必要に応じ
フイーダ２Ｂ、計量機３Ｂを経由して第１混合機
４に供給することができる。 Further, the hopper 1B can accommodate a desulfurizing agent and supply it to the first mixer 4 via the feeder 2B and the weighing machine 3B as required.
またホツパ１Ｃには比重調整用の微粉（Fe2O3
等）を収容し、フイーダ２Ｃ、計量器３Ｃを経由
して第１混合機４に供給することができる。 In addition, hopper 1C contains fine powder (Fe 2 O 3
etc.) and can be supplied to the first mixer 4 via the feeder 2C and the measuring device 3C.
このような第１混合機内の液の比重の制御は第
１混合機４に設けた液比重発信器１６から送られ
る比重の信号を記憶と指令信号を出す制御箱１５
に送り、その指令信号を水等の液の供給量を制御
する流量制御弁１７、フイーダと計量器の組１と
２，１Ａと２Ａ，１Ｂと２Ｂ，１Ｃと２Ｃの制御
をする。計量機３，３Ａ，３Ｂ，３Ｃ及び流量計
６からはそれぞれの計測値が制御箱１５にフイー
ダバツクされる。 The specific gravity of the liquid in the first mixer 4 is controlled by a control box 15 that stores the specific gravity signal sent from the liquid specific gravity transmitter 16 provided in the first mixer 4 and issues a command signal.
The command signal is sent to the flow rate control valve 17 for controlling the supply amount of liquid such as water, and the feeder and meter sets 1 and 2, 1A and 2A, 1B and 2B, 1C and 2C. Measured values from the measuring machines 3, 3A, 3B, 3C and the flow meter 6 are fed back to the control box 15.
＜作用＞
石炭と水スラリの場合、それぞれの比重は1.3
〜1.8と1.0で水に比べて石炭粒子の比重は大きい
値をもつ。したがつて石炭粒子はストークスの式
に従つて水中下で沈降する。沈降速度は層流域で
はストークスの式に従うところは公知である。
（例えば化学工学、P29；大山著、第２刷 岩
波全書、1964）
Ut＝（ρs−ρa）ｇ・d2／18μ ……(1)
Ut：沈降速度 μ：粘
ρs：粒子密度 ｄ：粒子径
ρa：媒液密度 ｇ：重力加速度
沈降速度に及ぼす影響因子として固体粒子と媒
液の比重差、媒液の粘度、固体粒子径がある。<Function> In the case of coal and water slurry, the specific gravity of each is 1.3
The specific gravity of coal particles is larger than that of water at ~1.8 and 1.0. Coal particles therefore settle under water according to Stokes' equation. It is well known that the sedimentation velocity follows the Stokes equation in a laminar region.
(For example, Chemical Engineering, P29; written by Oyama, 2nd edition, Iwanami Zensho, 1964) Ut = (ρ s − ρ a ) g・d 2 / 18μ ... (1) Ut: Sedimentation velocity μ: Viscous ρ s : Particle density d: Particle diameter ρ a : Medium density g: Gravitational acceleration Factors that influence the sedimentation rate include the difference in specific gravity between the solid particles and the medium, the viscosity of the medium, and the solid particle size.
１例として石炭粒子が水中下で沈降する速度を
ストークスの式に基づいて計算すると第２図の結
果になる。石炭粒子の沈降速度は粒子径70μｍで
約10mm／ｓと比較的早いことが示される。もちろ
ん粒子数が大で粒子が多量に存在する粒子群では
この値より遅い値となることは言うまでもない。 As an example, when the speed at which coal particles settle under water is calculated based on Stokes' equation, the results shown in Figure 2 are obtained. It is shown that the sedimentation speed of coal particles is relatively fast at about 10 mm/s when the particle size is 70 μm. Of course, it goes without saying that the value will be slower than this value in a particle group where the number of particles is large and there are many particles.
沈降速度を遅くし石炭スラリの安定性を改善す
るために媒液と石炭粒子の比重差を小さくするこ
と、粒子径を小さくすること、媒液の粘度を増加
することが重要となる。本願発明は上記３件を全
て満足して石炭スラリの安定性を著しく改善する
方法を提供している。水にあらかじめ微細な石炭
粒子、脱硫剤、スラツジ等を添加混合することに
より水と石炭粒子、脱硫剤、スラツジ等のコロイ
ド状液を作製することができる。この微細な粒子
としては、径が５〜10μｍ以下のものが使用さ
れ、水と混合撹拌することによつてコロイド状液
となつてコロイド状液の比重は高くなる。水と石
炭及び固体（脱硫剤、スラツジ等）の混合物の比
重は次式で示される。 In order to slow the sedimentation rate and improve the stability of the coal slurry, it is important to reduce the difference in specific gravity between the medium and coal particles, reduce the particle size, and increase the viscosity of the medium. The present invention provides a method that satisfies all of the above three requirements and significantly improves the stability of coal slurry. A colloidal liquid containing water, coal particles, desulfurization agent, sludge, etc. can be prepared by adding and mixing fine coal particles, desulfurization agent, sludge, etc. to water in advance. The fine particles used have a diameter of 5 to 10 μm or less, and when mixed with water and stirred, they become a colloidal liquid, and the specific gravity of the colloidal liquid increases. The specific gravity of a mixture of water, coal, and solids (desulfurization agent, sludge, etc.) is expressed by the following formula.
ρs＝ρc／ω／１＋pC／pH（１／ω−１）……(2
)
ρc：固体の比重 ω：固体濃度
ρH：液体の比重
ρs：スラリの比重
１例として石炭粒子と水の混合物の比重を計算
した結果を第３図に示す。石炭の微細粒子の割合
がコロイド状液に対して50％のときコロイド状液
の比重は1.17と石炭粒子の比重1.4に比べて近い
値を示す。さらには微細な粒子の添加によつてコ
ロイド状液の粘度は増加することは公知である。
（文献参照：“Farris，R.J”Trans.Society of
Rheology，12：２，281（1968））
第４図は微細粒子の混合によるコロイド状液に
おける石炭粒子径と沈降速度の関係を示したもの
である。このようにコロイド状液の作製によつて
石炭粒子の沈降は著しく遅くなり第２図の水中下
にける石炭粒子の沈降速度と比較すると約１／3000
以下に改善されている。（コロイド状液の粘度を
1000cpと仮定）
また比重の高い脱硫剤、スラツジ等を添加する
と少量で比重の高いコロイド状液を作製すること
ができる。 ρ s = ρ c /ω/1+p C /p H (1/ω−1)……(2
) ρ c : Specific gravity of solid ω : Solid concentration ρ H : Specific gravity of liquid ρ s : Specific gravity of slurry As an example, the results of calculating the specific gravity of a mixture of coal particles and water are shown in Figure 3. When the ratio of fine coal particles to colloidal liquid is 50%, the specific gravity of colloidal liquid is 1.17, which is close to the specific gravity of coal particles, which is 1.4. Furthermore, it is known that the viscosity of colloidal liquids can be increased by adding fine particles.
(Literature reference: “Farris, RJ” Trans.Society of
Rheology, 12:2, 281 (1968)) Figure 4 shows the relationship between coal particle diameter and sedimentation velocity in a colloidal liquid made by mixing fine particles. As described above, the preparation of the colloidal liquid significantly slows down the sedimentation of the coal particles, which is improved to about 1/3000 or less compared to the sedimentation speed of the coal particles under water as shown in FIG. (The viscosity of a colloidal liquid is
(assumed to be 1000 cp) Also, by adding a desulfurizing agent, sludge, etc. with a high specific gravity, a colloidal liquid with a high specific gravity can be created in a small amount.
第５図は脱硫剤（比重＝3.0）と水のコロイド
状液の比重を(2)式に基づいて計算した結果を示
す。 Figure 5 shows the results of calculating the specific gravity of the desulfurizing agent (specific gravity = 3.0) and the colloidal liquid of water based on equation (2).
脱硫剤の必要添加量は石炭中に含まれるＳ分の
量によつても変わるが、微細な脱硫剤（15〜10μ
ｍ以下）を30％添加することによつてコロイド状
液の比重は1.25にも上昇する。このコロイド状液
に微粉炭を添加した場合の沈降速度は第４図に示
す値よりも小さくなる。（粘度を1000cpと仮定）
このように微細な粒子（石炭、スラツジ、脱硫
剤等）を水等に添加して混合撹拌することにより
コロイド状の比重及び粘度の高い液が作製でき
る。このコロイド状液の中に微粉炭を添加、混合
することによつて沈降の少ない安定な石炭スラリ
が作製することができる。 The required amount of desulfurization agent added varies depending on the amount of S contained in the coal, but fine desulfurization agent (15 to 10μ
The specific gravity of the colloidal liquid increases to as much as 1.25 by adding 30% of the colloid (less than m). When pulverized coal is added to this colloidal liquid, the sedimentation rate becomes smaller than the value shown in FIG. (Assuming a viscosity of 1000 cp) By adding such fine particles (coal, sludge, desulfurizing agent, etc.) to water, etc. and mixing and stirring, a colloidal liquid with high specific gravity and viscosity can be produced. By adding and mixing pulverized coal into this colloidal liquid, a stable coal slurry with little sedimentation can be produced.
＜発明の効果＞
本発明を実施することにより微粉炭粒子の沈降
を著しく低減できることから石炭スラリの長期安
定性が維持できる。石炭スラリの品質管理項目で
最も重要なことはスラリの安定性であり、スラリ
の安定性を確保することによりスラリ製造工程、
配管ループ（ライン）、貯蔵タンク等での閉塞及
び沈降トラブルが解消でき信頼性の高いシステム
が可能となる。またコロイド状液を作製するに必
要な微細粒子（５〜10μｍ）にスラツジ炭を使用
した場合、微粉砕に必要な粉砕エネルギーの節約
になり製造工程におけるランニングコストが低減
できる。一方、微粒子として脱硫剤を使用した場
合、石炭中に含まれる硫黄の除去が著しく容易と
なる。すなわち脱硫剤の取り扱いが石炭スラリ化
することによつて容易となるばかりでなく、燃焼
炉内で脱硫反応が可能となることから脱硫設備が
不要となり設備コストの大巾な低減が可能とな
る。<Effects of the Invention> By implementing the present invention, sedimentation of pulverized coal particles can be significantly reduced, so long-term stability of coal slurry can be maintained. The most important quality control item for coal slurry is slurry stability.Ensuring slurry stability will improve the slurry manufacturing process.
This eliminates blockage and sedimentation problems in piping loops (lines), storage tanks, etc., and enables a highly reliable system. Furthermore, when sludge charcoal is used as the fine particles (5 to 10 μm) necessary for producing a colloidal liquid, the pulverization energy required for pulverization can be saved and the running cost in the manufacturing process can be reduced. On the other hand, when a desulfurizing agent is used as fine particles, it becomes extremely easy to remove sulfur contained in coal. That is, not only is it easier to handle the desulfurizing agent by turning it into a coal slurry, but since the desulfurization reaction can be carried out in the combustion furnace, desulfurization equipment is no longer required, making it possible to significantly reduce equipment costs.
第１図は本発明の一実施例にかかる石炭スラリ
製造工程のフローを示す説明明図、第２図は本発
明の一実施例にかかる粒子径と沈降速度の関係線
図、第３図は本発明の一実施例にかかる固体濃度
とコロイド液比重の関係を示す線図、第４図は本
発明の一実施例にかかるコロイド液下で石炭粒子
が沈降する速度を示した線図、第５図は本発明の
一実施例にかかる脱硫剤を使用した場合の固体濃
度とコロイド液比重の関係を示す線図である。
１…微粉炭のホツパ、２…フイーダ、３…計量
機、４…第１混合機、８…第２混合機、１０，１
１…貯槽、１５…制御箱。
Fig. 1 is an explanatory diagram showing the flow of the coal slurry production process according to an embodiment of the present invention, Fig. 2 is a relationship diagram between particle size and sedimentation rate according to an embodiment of the present invention, and Fig. 3 is FIG. 4 is a diagram showing the relationship between solid concentration and colloidal liquid specific gravity according to an embodiment of the present invention, and FIG. FIG. 5 is a diagram showing the relationship between solid concentration and colloidal liquid specific gravity when a desulfurizing agent according to an embodiment of the present invention is used. 1...Pulverized coal hopper, 2...Feeder, 3...Measuring machine, 4...First mixer, 8...Second mixer, 10,1
1...Storage tank, 15...Control box.
Claims (1)
を加え微粉炭の沈降量の小なるスラリーを形成す
ることを特徴とする石炭スラリー燃料製造方法。 ２ 微粉炭の比重にほぼ等しい比重の液をスラツ
ジ炭と水の混合により形成し、これに微粉炭を加
えて石炭スラリー燃料とすることを特徴とする特
許請求の範囲第１項記載の石炭スラリー燃料製造
方法。 ３ 微粉炭の比重にほぼ等しい比重の液を重油又
は軽油に５〜10ミクロン以下の微粉炭及び又は酸
化鉄粉を加え混合して形成し、これに約70〜100
ミクロンの微粉炭を加えて石炭スラリー燃料とす
ることを特徴とする特許請求の範囲第１項記載の
石炭スラリー燃料製造方法。 ４ 石炭スラリーの重量に対し水約20〜50％と約
10〜５ミクロン以下の微粉炭約24〜30％との重量
比で混合して微粉炭の比重にほぼ等しい比重のコ
ロイド状液を形成し、ついで約70〜100ミクロン
の微粉炭を重量比で約20〜56％加えて石炭スラリ
ー燃料とすることを特徴とする特許請求の範囲第
１項または第２項記載の石炭スラリー燃料製造方
法。 ５ 微粉炭の比重にほぼ等しい比重の液を、脱硫
性をもつ材料を粒径10〜５ミクロン及び又はそれ
以下の微粉として液に供給し混合してコロイド状
液に形成し、この液に約70〜100ミクロンの微粉
炭を供給して石炭スラリー燃料とすることを特徴
とする特許請求の範囲第１項、第２項、第３項の
いずれかに記載の石炭スラリー燃料製造方法。 ６ 脱硫性をもつ材料をCaO，CaCO3，MgO，
Fe2O3の何れか一種又はこれらを組合せたものと
することを特徴とする特許請求の範囲第５項記載
の石炭スラリー燃料製造方法。 ７ 微粉炭の比重とほぼ等しい比重の液をつくる
混合機内の液の比重を計測する液比重発信器から
の信号を受ける記憶と指令信号を出す制御箱と、
この制御箱からの指令信号を受け第１混合機への
供給水量を制御する流量制御弁と、微粉炭、比重
調整用粉体、脱硫剤の供給量を制御するそれぞれ
の材料に対するフイーダと計量機との組、第２混
合機、およびこれらを接続する管路とよりなるこ
とを特徴とする石炭スラリー燃料製造装置。[Claims] 1. A method for producing a coal slurry fuel, which comprises adding pulverized coal to a liquid having a specific gravity approximately equal to that of pulverized coal to form a slurry in which the amount of pulverized coal settling is small. 2. The coal slurry according to claim 1, wherein a liquid having a specific gravity approximately equal to that of pulverized coal is formed by mixing sludge coal and water, and pulverized coal is added to the liquid to form a coal slurry fuel. Fuel production method. 3. A liquid with a specific gravity approximately equal to that of pulverized coal is formed by adding and mixing pulverized coal and/or iron oxide powder of 5 to 10 microns or less to heavy oil or light oil, and adding about 70 to 100 microns to this liquid.
2. The method for producing coal slurry fuel according to claim 1, wherein the coal slurry fuel is prepared by adding micron pulverized coal. 4 Approximately 20 to 50% water based on the weight of coal slurry
Mix with about 24-30% by weight of pulverized coal of 10-5 microns or less to form a colloidal liquid with a specific gravity approximately equal to that of the pulverized coal, and then add pulverized coal of about 70-100 microns by weight. 3. A method for producing a coal slurry fuel according to claim 1 or 2, characterized in that about 20 to 56% is added to the coal slurry fuel. 5 A liquid with a specific gravity approximately equal to that of pulverized coal is supplied with a desulfurizing material as a fine powder with a particle size of 10 to 5 microns and/or smaller, mixed to form a colloidal liquid, and this liquid is The method for producing coal slurry fuel according to any one of claims 1, 2, and 3, characterized in that pulverized coal of 70 to 100 microns is supplied to produce coal slurry fuel. 6 Materials with desulfurization properties include CaO, CaCO 3 , MgO,
The method for producing coal slurry fuel according to claim 5, characterized in that any one type of Fe 2 O 3 or a combination thereof is used. 7. A control box that receives signals from a liquid specific gravity transmitter that measures the specific gravity of the liquid in the mixer that produces a liquid with a specific gravity that is approximately equal to the specific gravity of pulverized coal, and a control box that issues command signals;
A flow control valve receives a command signal from this control box and controls the amount of water supplied to the first mixer, and a feeder and a weighing machine for each material controls the amount of pulverized coal, specific gravity adjustment powder, and desulfurization agent supplied. 1. A coal slurry fuel production device comprising: a second mixer; and a pipe connecting these.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17460780A JPS5798596A (en) | 1980-12-12 | 1980-12-12 | Method and apparatus for preparing coal slurry fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17460780A JPS5798596A (en) | 1980-12-12 | 1980-12-12 | Method and apparatus for preparing coal slurry fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5798596A JPS5798596A (en) | 1982-06-18 |
| JPS644560B2 true JPS644560B2 (en) | 1989-01-26 |
Family
ID=15981534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17460780A Granted JPS5798596A (en) | 1980-12-12 | 1980-12-12 | Method and apparatus for preparing coal slurry fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5798596A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953597A (en) * | 1982-09-21 | 1984-03-28 | Babcock Hitachi Kk | Improvement of coal slurry viscosity |
| CN105312003A (en) * | 2014-06-30 | 2016-02-10 | 中煤科工集团武汉设计研究院有限公司 | Terminal coal slurry dehydration and fine-grinding combined slurry production device and terminal coal slurry dehydration and fine-grinding combined slurry production method of long-distance pipeline |
-
1980
- 1980-12-12 JP JP17460780A patent/JPS5798596A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5798596A (en) | 1982-06-18 |
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