JPS6039607B2 - Gas pipe transportation method for fine powder coal - Google Patents
Gas pipe transportation method for fine powder coalInfo
- Publication number
- JPS6039607B2 JPS6039607B2 JP12493379A JP12493379A JPS6039607B2 JP S6039607 B2 JPS6039607 B2 JP S6039607B2 JP 12493379 A JP12493379 A JP 12493379A JP 12493379 A JP12493379 A JP 12493379A JP S6039607 B2 JPS6039607 B2 JP S6039607B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pulverized coal
- coal
- drying
- fine pulverized
- 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 title claims description 72
- 238000000034 method Methods 0.000 title claims description 17
- 239000000843 powder Substances 0.000 title claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 35
- 239000000428 dust Substances 0.000 claims description 31
- 238000001035 drying Methods 0.000 claims description 24
- 239000000446 fuel Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 89
- 238000010438 heat treatment Methods 0.000 description 13
- 239000000112 cooling gas Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Air Transport Of Granular Materials (AREA)
Description
【発明の詳細な説明】
本発明は、石炭を圧縮気体により管路輸送する方法、と
くに気体管路輸送のため石炭を粉砕．乾燥す過程と、粉
砕．乾燥した微細粉炭を気体管路輸送する過程とを有効
にリンクさせる方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting coal through a pipe using compressed gas, and particularly a method for transporting coal through a gas pipe. Drying process and crushing. The present invention relates to a method of effectively linking the process of transporting dry fine coal through gas pipes.
一般に、多量の石炭を輸送する方法として、設備コスト
、輸送コストの面のみならず、公害対策の面からも、圧
縮気体による管路輸送が有利であることが認識されてい
る。Generally, as a method for transporting large amounts of coal, it is recognized that pipe transport using compressed gas is advantageous not only in terms of equipment costs and transport costs, but also in terms of pollution control.
ところで、石炭を気体管路輸送する場合には、石炭に管
路輸送に必要十分な流動性をもたせ、また管路内での閉
塞を防止するため、石炭を予じめ適当な粒径に粉砕して
微細化し、さらに微細粉炭を乾燥する必要がある。By the way, when transporting coal through gas pipes, the coal is crushed to an appropriate particle size in advance in order to give the coal sufficient fluidity for pipe transport and to prevent clogging in the pipes. It is necessary to refine the coal into fine powder, and then dry the fine pulverized coal.
粉砕．乾燥した微細粉炭は、通常ろ場合、一旦サイロ等
に送って貯蔵し、貯蔵した微細粉炭を適量ずつ切り出し
て、気体管路輸送装置に送り、圧送気体により目的地に
輸送される。この気体管路輸送に際しては、微細粉炭を
取扱うことから、爆発の危険性があり、防爆対策として
は、輸送用気体として酸素濃度が約１０％以下の不活性
ガスを使用する必要ある。Grinding. Normally, dried fine pulverized coal is once sent to a silo or the like for storage, and then the stored fine pulverized coal is cut out in appropriate amounts and sent to a gas pipe transportation device, where it is transported to a destination using compressed gas. In this gas pipe transportation, since fine powder coal is handled, there is a risk of explosion, and as an explosion-proof measure, it is necessary to use an inert gas with an oxygen concentration of about 10% or less as the transportation gas.
一般に、多量の微粒体を加熱．乾燥するシステムにおい
ては、重油、灯油、石炭、天然ガス等を燃焼とする熱風
発生装置により発生させた燃焼排ガスを用い、この燃焼
排ガスにより、粉粒体を直接的に加熱乾燥する方法が有
利であるとされているが、この方法では、燃焼排ガスの
温度が１，３００〜１，５００ｑｏときわめて高いため
、実際には大量の空気により燃焼排ガスを希釈・冷却し
て、約５００００の温度にまで下げたうえで、粉粒体の
直接乾燥を行なっている。Generally, a large amount of fine particles is heated. For drying systems, it is advantageous to use combustion exhaust gas generated by a hot air generator that burns heavy oil, kerosene, coal, natural gas, etc., and directly heat and dry the powder and granules using this combustion exhaust gas. However, in this method, the temperature of the combustion exhaust gas is extremely high at 1,300 to 1,500 qo, so in reality, the combustion exhaust gas is diluted and cooled with a large amount of air to reach a temperature of about 50,000 qo. After lowering the temperature, the powder and granules are directly dried.
しかしながら、上記のように燃焼排ガスを空気で希釈・
冷却する方法を微細粉炭の加熱乾燥に適用した場合には
、燃焼排ガスの酸素濃度がきわめて高くなるため、加熱
乾燥用に用いた燃焼排ガスを微細粉炭の気体管路輸送気
体源として利用することができず、気体管路輸送用気体
は、別系統によって得る必要があるばかりか、加熱乾燥
に用いた多量の極微細粉炭を含有する燃焼排ガスを集塵
処理したうえで外部に放出しなければならない問題があ
った。However, as mentioned above, combustion exhaust gas is diluted with air.
When the cooling method is applied to heating and drying fine pulverized coal, the oxygen concentration in the combustion exhaust gas becomes extremely high, so the combustion exhaust gas used for heating and drying cannot be used as a gas source for transporting fine pulverized coal through gas pipes. Not only is it necessary to obtain the gas for gas pipeline transportation through a separate system, but the combustion exhaust gas, which contains a large amount of ultrafine pulverized coal used for heating and drying, must be collected and then released to the outside. There was a problem.
本発明は、したがって、単一の熱風発生装置により得た
燃焼排ガスを微細粉炭の乾燥用気体としても微細粉炭の
管路輸送用気体としても利用することができる微細粉炭
の気体管路輸送を提供することを基本的な目的としてい
る。Therefore, the present invention provides gas pipeline transportation of fine pulverized coal, in which the combustion exhaust gas obtained by a single hot air generator can be used both as a drying gas for fine pulverized coal and as a gas for pipeline transportation of fine pulverized coal. The basic purpose is to
このため、本発明においては、微細粉炭の加熱・乾燥に
用いた燃焼排ガスを集塵・除湿し、得られた清浄な燃焼
排ガスの一部を加熱・乾燥用燃焼排ガスの冷却用気体と
してリサイクルし、残りを微細粉炭輸送用気体として使
用するようにしたことを基本的な特徴としている。Therefore, in the present invention, the combustion exhaust gas used for heating and drying pulverized coal is collected and dehumidified, and a part of the resulting clean combustion exhaust gas is recycled as a cooling gas for the combustion exhaust gas used for heating and drying. The basic feature is that the remainder is used as a gas for transporting fine pulverized coal.
即ち、本発明は、冷却用気体として酸素濃度の低い燃焼
排ガスを用いるため、加熱・乾燥に用いる燃焼排ガスは
、全体としてもその酸素濃度を１０％以下に維持するこ
とができ、したがって加熱・乾燥後の含塵ガスは、これ
を集塵・除湿しさえすれば、そのまま微細粉炭の管路輸
送用気体として用いることができるのである。That is, since the present invention uses combustion exhaust gas with a low oxygen concentration as a cooling gas, the oxygen concentration of the combustion exhaust gas used for heating and drying can be maintained at 10% or less as a whole. The subsequent dust-containing gas can be used as is as a gas for transporting fine pulverized coal through pipes, as long as it is collected and dehumidified.
本発明において、加熱・乾燥後の含塵ガスの集塵は、含
塵ガスの含塵舎率が高くなることから、油を橘集剤とす
るルーバーを用いてまず粗集摩し、乾式仕上げ集塵する
のに必要な程度にまで除摩することが好ましい。In the present invention, since the dust-containing gas after heating and drying has a high dust-containing rate, it is first roughly collected using a louver that uses oil as a collection agent, and then dry-finished. It is preferable to remove the abrasion to the extent necessary for dust collection.
ルーバーによって集醸した極微紬粉炭は、橘集剤として
の油と一緒に抜き出して、ＣＯＭ燃料（Ｃｏａｌ−ｏｉ
ｌ−ｍＭｕｕｒｅ）として利用することが有利である。The ultrafine pulverized coal collected by the louver is extracted together with oil as a collecting agent and turned into COM fuel (Coal-oil).
It is advantageous to use it as l-mMure).
また、粗集塵後の含塵ガスは、乾式仕上げ集塵すること
がコスト的に有利であるが、この仕上げ集塵によって集
塵された極微紬粉炭は、前段で得られたＣＯＭ燃料にさ
らに混入するようにすれば、特別な後処理を旋す必要な
しに、極微紬粉炭の有効利用を図ることができる。以下
、添付の図面を参照しながら、本発明方法を具体的に説
明する。In addition, it is cost-effective to perform dry finishing dust collection on the dust-containing gas after rough dust collection, but the extremely fine powdered coal collected by this finishing dust collection is further added to the COM fuel obtained in the previous stage. If it is mixed in, it is possible to effectively utilize the extremely fine powdered pongee coal without the need for special post-treatment. Hereinafter, the method of the present invention will be specifically explained with reference to the accompanying drawings.
第１図において、１は重油、石炭、天然ガス、ＣＯＭ等
々の炭素質燃料を燃料とし、その燃焼排ガスを気体管路
〆，から送給される冷却用気体と混合して、約５００ｑ
○、酸素濃度１０％以下の燃料排ガスを熱風として供給
する熱風発生装置、２は石炭をを気体管路輸送するのに
最適な粒径にまで粉砕して微細粉炭化する粉砕機、３は
粉砕機２から供給された微細粉炭を気体管路夕２から供
給される燃焼排ガスによって直接に加熱・乾燥する流動
槽よりなる乾燥器、４は加熱・乾燥した微細粉炭を一旦
貯蔵するためのサイロで、このサイロ４には、気体管路
夕３によつ、加熱・乾燥に使用され、この過程で極微紬
粉炭を高濃度に含有するに至った燃焼排ガスである含塵
ガスを送給し、サイロ４中で含塵ガス中の極微細粉炭の
一部を沈降させる。In Fig. 1, 1 uses carbonaceous fuel such as heavy oil, coal, natural gas, COM, etc. as fuel, and its combustion exhaust gas is mixed with cooling gas supplied from the gas pipe.
○. Hot air generator that supplies fuel exhaust gas with an oxygen concentration of 10% or less as hot air. 2. A pulverizer that grinds coal to the optimum particle size for transporting through gas pipes and carbonizes it into fine powder. 3. A pulverizer. The dryer consists of a fluidized tank that directly heats and dries the pulverized coal supplied from the machine 2 using the combustion exhaust gas supplied from the gas pipe 2, and 4 is a silo for temporarily storing the heated and dried pulverized coal. , This silo 4 is supplied with dust-containing gas, which is combustion exhaust gas that is used for heating and drying and has come to contain a high concentration of ultrafine pulverized coal during this process, through the gas pipe 3. A part of the ultrafine pulverized coal in the dust-containing gas is allowed to settle in silo 4.
５は気体管路夕４ によってサイロ４の上部から取出し
た含塵ガスを油を橘集剤として相集塵するルーバー、６
はルーバー５によって粗集塵した含塵ガスを気体管路輸
送そ５によって受入れ、これを仕上げ集塵するバグフィ
ルタ，サイクロン等の乾式仕上げ集塵機、７は乾式仕上
げ集塵機６の出口に連結した気体管路そ６の途中に介設
した冷却器でこの冷却器７は乾式仕上げ集塵機６により
清浄化された燃焼排ガスを冷却・除湿し、冷却・除湿し
た燃焼排ガスは、その一部を上記気体管路そ，により熱
風発生装置１に冷却用気体としてリサイクルされる一方
、残りは、気体管路〆７ によってターボコンブレッサ
８に供給される。5 is a louver that collects the dust-containing gas taken out from the upper part of the silo 4 through the gas pipe 4 using oil as a collecting agent;
7 is a dry finishing dust collector such as a bag filter or cyclone that receives the dust-containing gas roughly collected by the louver 5 through the gas pipe transport unit 5 and collects the dust for finishing. 7 is a gas pipe connected to the outlet of the dry finishing dust collector 6. A cooler 7 is installed in the middle of the passageway 6. This cooler 7 cools and dehumidifies the combustion exhaust gas that has been cleaned by the dry finishing dust collector 6, and a part of the cooled and dehumidified combustion exhaust gas is passed through the gas pipe. Thereby, it is recycled to the hot air generator 1 as cooling gas, while the rest is supplied to the turbo compressor 8 through the gas pipe 7.
このターボコンブレッサ８は、気体管路そ７ により供
給される燃焼排ガスを微細粉炭の気体管路輸送に必要な
圧力にまで昇圧し、次段の気体管路輸送装置９に供給す
る。This turbo compressor 8 boosts the pressure of the combustion exhaust gas supplied through the gas pipe line 7 to a pressure necessary for transporting fine powder coal through the gas pipe line, and supplies it to the gas pipe line transport device 9 at the next stage.
気体管路輸送装置９は、前記サイロ４の底部から切出さ
れ、コンベヤ１０１こよって搬送されてきた微細粉炭を
受容するバンカー１と、フィーダ１２を介してバンカ１
１の底部から切出された微細粉炭を受容し、気体管路夕
８，そ９によってターボコンブレッサ８から供給される
管路輸送用気体により、微細粉炭の気体輸送管路〆，ｏ
に送り出す一対のブロータンク１３，１３とからなり、
気体輸送管略〆，。The gas pipe transport device 9 includes a bunker 1 that receives fine powder coal cut out from the bottom of the silo 4 and transported by a conveyor 101, and a bunker 1 that receives fine powder coal that has been cut out from the bottom of the silo 4 and transported by a conveyor 101.
The fine pulverized coal cut out from the bottom of the pulverized coal is received from the bottom of the pulverized coal, and the gas transporting gas supplied from the turbo compressor 8 through the gas pipes 8 and 9 closes the fine pulverized coal gas transport pipes.
It consists of a pair of blow tanks 13, 13 that send out to
Gas transport pipe omitted.
により、微細粉炭を目的地まで管路輸送する。なお、目
的地までの距離が長い場合には、上記の如き気体管路輸
送装置を途中に何基が設置するばよい。The pulverized coal is transported via pipes to its destination. In addition, if the distance to the destination is long, how many gas pipe transport devices as described above should be installed along the way.
上記の如く、本発明方法では、微細粉炭を加熱乾燥する
ために使用した燃焼排ガスを集塵・除湿したのち、情状
化した燃焼排ガスを二分し、一部を熱風発生装置１側に
乾燥用燃焼排ガスの冷却用気体としてリサイクルする一
方、残りの一部を微細粉炭の圧送用気体として使用する
。As described above, in the method of the present invention, after collecting and dehumidifying the combustion exhaust gas used for heating and drying fine powder coal, the conditioned combustion exhaust gas is divided into two parts, and a part is sent to the hot air generator 1 side for drying combustion. While the exhaust gas is recycled as a cooling gas, the remaining part is used as a gas for pumping fine pulverized coal.
この場合の分配割合は、圧送気体量１に対して、冷却用
気体量を２〜４の割合とすればよく、このようにすれば
、熱風発生装置１の燃焼排ガスを希釈冷却して約５００
℃の温度とするに十分な量の冷却用気体が得られ、同時
に加熱・乾燥した微細粉炭を管路輸送するに必要十分な
圧送用気体を確保することができる。In this case, the distribution ratio may be such that the amount of cooling gas is 2 to 4 times the amount of compressed gas, and if this is done, the combustion exhaust gas of the hot air generator 1 will be diluted and cooled to about 500
It is possible to obtain a sufficient amount of cooling gas to bring the temperature to .degree. C., and at the same time, it is possible to secure sufficient pressure gas to transport heated and dried fine powder coal through pipes.
即ち、本発明方法では、熱風発生装置よりの燃焼排ガス
を系外に逃がすことなく効率的に使用することができる
。微細粉炭の気体管路輸送システムを形成すことができ
るのである。また、油を橘集剤とするルーバ−５により
含塵ガスを粗集塵した結果得られる極微細粉炭と油の混
合物は、これをスラジコンベャ等によりルーバ−５の底
部から取り出すことにより、ＣＯＭ燃料として使用する
ことができる。That is, in the method of the present invention, the combustion exhaust gas from the hot air generator can be used efficiently without escaping to the outside of the system. This makes it possible to form a gas pipeline transportation system for fine pulverized coal. In addition, the mixture of ultrafine powder coal and oil obtained as a result of coarsely collecting the dust-containing gas with the louver 5 using oil as a collection agent is taken out from the bottom of the louver 5 using a sludge conveyor, etc., and then converted into COM fuel. It can be used as
この段階での含塵ガスは、極微紬粉炭を１００〜１，０
００ｇ／Ｎが程度のきわめて高い濃度で含有しており、
ルーバ−５では、次段の乾式仕上げ集塵機６のコスト的
かつ技術的な意味での入口許容濃度である約３０ｇ／Ｎ
め以下の濃度にまで粗集塵する必要があることから、得
られるＣＯＭ燃料は多量にのぼる。このようにして得ら
れるＣＯＭ燃料は、熱風発生装置１の燃料としても使用
することができ、余剰分は、他の消費地、例えば火力発
電所に直接に管路輸送すればよい。The dust-containing gas at this stage contains 100 to 1,0
It contains extremely high concentration of 00g/N,
Louver 5 has a concentration of approximately 30 g/N, which is the allowable inlet concentration in terms of cost and technology for the next stage dry finishing dust collector 6.
Since it is necessary to coarsely collect the dust to a concentration below 100 ml, a large amount of COM fuel is obtained. The COM fuel obtained in this way can also be used as a fuel for the hot air generator 1, and the surplus can be directly transported through a pipe to another consumption site, for example, a thermal power plant.
さらに、乾式仕上げ集塵機６によって集座された極微紬
粉炭は、ルーバー５から取り出したＣＯＭ燃料にそのま
ま混入すれば、取扱いの困難な極微細粉炭の後処理を著
しく簡単化することができる。なお、上記微細粉炭の気
体管路輸送システムにおいて、微細粉炭の加熱・乾燥に
用いられた後の含塵ガスは、石炭からの蒸発水分を多量
に含み、露点が５０ｑｏ以上となることが予想され、含
塵ガスのサイロ４に導びし、た場合、サイロ壁面を多量
の水滴が析出し、一旦乾燥した微細粉炭を再び湿らせ、
微細粉炭のブリッジ・アーティング現象によってサイロ
４内の流動性を阻害し、閉塞を起すばかりでなくまた、
輸送管路内においても閉塞を惹起する原因となる。Furthermore, if the ultrafine pulverized coal collected by the dry finishing dust collector 6 is mixed directly into the COM fuel taken out from the louver 5, the post-processing of the ultrafine pulverized coal, which is difficult to handle, can be significantly simplified. In addition, in the above-mentioned fine pulverized coal gas pipe transportation system, the dust-containing gas after being used for heating and drying the pulverized coal is expected to contain a large amount of evaporated water from the coal and have a dew point of 50 qo or more. When the dust-containing gas is introduced into the silo 4, a large amount of water droplets are deposited on the silo wall, re-wetting the once-dried fine powder coal.
The bridging/arting phenomenon of fine pulverized coal not only obstructs the fluidity within the silo 4 and causes blockage, but also
It also causes blockages in transport pipes.
かかるサイロの問題に関しては、サィｏ４を第２図に示
すように、サイロ壁を２重壁構造とし、内外壁４ａ，４
ｂの間にパーラィト等の粉粒状の保温材４ｃを充填する
ことにより、サイロ壁を保温構造とすることが有効であ
る。Regarding this problem with the silo, as shown in FIG. 2, the silo wall has a double wall structure, and the inner and outer walls 4a,
It is effective to make the silo wall have a heat retaining structure by filling the spaces between the silo walls with a heat retaining material 4c in the form of powder such as perlite.
より具体的には、ラテス４ｄを、内壁４ａと鋼板等の外
壁４ｂとをボルトやビスにより固定するに際してＦＲＰ
とをボルトを介装し、上記の如く、さらに保温材４ｃ円
を充填すれば、サィ。More specifically, when fixing the lattice 4d to an inner wall 4a and an outer wall 4b such as a steel plate with bolts or screws, FRP is used.
If you insert a bolt between the two and fill it with 4c of heat insulating material as described above, it will be fine.
壁面の補強を兼ねた保温構造とすることができ、水滴の
析出確実に防止することができ、サイロの建設上、その
工期を短縮でき施行コストを安価なものとすることがで
きる。以上詳細に説明したことから明らかなように、本
発明は、微細粉炭の加熱・乾燥に使用した燃焼排ガスを
集塵・除湿したのち、清浄化された燃焼排ガスを二分し
、一部を乾燥用気体、より具体的には、高温の燃焼排ガ
スの希釈冷却用気体としてリサイクルする一方、残りを
微細粉炭の圧送用気体として使用するようにした微細粉
炭の気体管路輸送法を提供するものである。It is possible to have a heat-retaining structure that also serves as wall reinforcement, and it is possible to reliably prevent the precipitation of water droplets, and the construction period of the silo can be shortened and the construction cost can be reduced. As is clear from the above detailed explanation, the present invention collects dust and dehumidifies the combustion exhaust gas used for heating and drying pulverized coal, then divides the purified combustion exhaust gas into two parts, and uses a part for drying. The present invention provides a gas pipeline transportation method for fine pulverized coal, in which the gas, more specifically, is recycled as a gas for diluting and cooling high-temperature combustion exhaust gas, while the remainder is used as a gas for pumping fine pulverized coal. .
本発明によれば、微細粉炭の加熱・乾燥に使用した燃焼
排ガスを系外に排出することなく、微細粉炭の圧送用気
体として使用することができるため、この種の管路輸送
システムをきわめて合理化かつ経済的なものとすること
ができる。According to the present invention, the combustion exhaust gas used for heating and drying the pulverized coal can be used as a gas for pumping the pulverized coal without being discharged outside the system, which greatly streamlines this type of pipeline transportation system. and can be made economical.
即ち、本発明によれば、微細粉炭の加熱・乾燥系と、気
体管路輸送系とを別個の系としてではな〈、互いにリン
クした一つの系として形成することができ、設備コスト
、運転コストを従来方法に比して著しく低減することが
できる。That is, according to the present invention, the pulverized coal heating/drying system and the gas pipeline transportation system can be formed not as separate systems but as one system linked to each other, which reduces equipment costs and operating costs. can be significantly reduced compared to conventional methods.
また、集塵した極微紬粉炭をＣＯＭ燃料として利用する
ようにすれば、より一層、システムのセルフコンシステ
ンシィを高めるこことができ、この種システムの実施化
を促進することができる。Furthermore, if the collected ultrafine pulverized coal is used as COM fuel, the self-consistency of the system can be further improved, and the implementation of this type of system can be promoted.
第１図は本発明方法を実施するための微細粉炭の気体管
路輸送システムの概略系統図、第２図は本発明方法にと
って好ましいサイロ構造の一例を示す要部断面説明図で
ある。
１・・・・・・熱風発生装置、２・・・・・・粉砕機、
３・・・・・・乾燥器、４・・・・・・サイロ、５・・
・・・・ルーバー、６・・・・・・乾式集塵機、７・・
・・・・冷却器、９・・・・・・気体管路輸送装置、８
……ターボコンブレッサ、１１……バン力、１３，１３
……フロータンク。
第２図
第１図FIG. 1 is a schematic system diagram of a gas pipeline transportation system for fine pulverized coal for implementing the method of the present invention, and FIG. 2 is a cross-sectional explanatory view of essential parts showing an example of a silo structure preferable for the method of the present invention. 1...Hot air generator, 2...Crusher,
3... Dryer, 4... Silo, 5...
...Louvre, 6...Dry dust collector, 7...
...Cooler, 9...Gas pipe transport device, 8
...Turbo compressor, 11...Van force, 13,13
...Flow tank. Figure 2 Figure 1
Claims (1)
乾燥させるに際して、炭素質燃料の燃焼により得た燃焼
排ガスを直接乾燥用気体としてリサイクルガスを混合し
て使用すると共に、乾燥後の含塵ガスを集塵．除湿し、
得られた清浄な燃焼排ガスを二分し、一方を乾燥用気体
としてリサイクルし、他方を昇圧して微細粉炭の圧送用
気体として使用することを特徴とする微細粉炭の気体管
路輸送。 ２ 微細粉炭の気体管路輸送に先立つて、石炭を粉砕し
乾燥させるに際して、炭素質燃料の燃焼により得た燃焼
排ガスを直接乾燥用気体としてリサイクルガスを混合し
て使用すると共に、乾燥後の含塵ガスを集塵・除湿し、
得られた清浄な燃焼排ガスを二分し、一方を乾燥用気体
としてリサイクルし、他方を昇圧して微細粉炭の圧送用
気体として使用するようにした微細粉炭の気体管路輸送
法おいて、 乾燥後の含塵ガスは油を捕集剤とするルー
バーを通して粗集塵し、ルーバーにて捕集された極微細
粉炭を油と共に抜き出してＣＯＭ燃料とすることを特徴
とする微細粉炭の気体管路輸送法。 ３ 特許請求の範囲第２項記載の微細粉炭の気体管路輸
送法において、 乾燥後の含塵ガスは油を捕集剤とする
ルーバーを通して粗集塵し、次いで乾式仕上げ集塵し、
ルーバーにて捕集された極微細粉炭を油と共に抜き出し
、これに乾式仕上げ集塵により捕集された極微細粉炭を
混合してＣＯＭ燃料とすることを特徴とする微細粉炭の
気体管路輸送法。[Claims] 1. Prior to transporting fine powder coal through gas pipes, when coal is crushed and dried, combustion exhaust gas obtained from combustion of carbonaceous fuel is directly used as a drying gas mixed with recycled gas. At the same time, dust-containing gas is collected after drying. Dehumidify,
Gas pipeline transportation of fine pulverized coal, characterized in that the obtained clean combustion exhaust gas is divided into two, one is recycled as a drying gas, and the other is pressurized and used as a gas for pumping fine pulverized coal. 2. Prior to transporting pulverized coal through gas pipes, when the coal is pulverized and dried, the combustion exhaust gas obtained from the combustion of carbonaceous fuel is used directly as a drying gas, mixed with recycled gas, and the Collects and dehumidifies dust gas,
In the gas pipe transportation method for fine pulverized coal, the resulting clean combustion exhaust gas is divided into two parts, one is recycled as a drying gas, and the other is pressurized and used as a gas for pumping fine pulverized coal. The dust-containing gas is coarsely collected through a louver that uses oil as a collection agent, and the extremely fine pulverized coal collected by the louver is extracted together with oil to be used as COM fuel. Gas pipe transportation of fine pulverized coal. Law. 3. In the method for transporting fine pulverized coal through a gas pipe line according to claim 2, the dust-containing gas after drying is coarsely collected through a louver using oil as a collecting agent, and then subjected to dry finishing dust collection,
A method for transporting fine pulverized coal through gas pipes, which is characterized by extracting the extremely fine pulverized coal collected by a louver together with oil, and mixing it with the extremely fine pulverized coal collected by dry finishing dust collection to obtain COM fuel. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12493379A JPS6039607B2 (en) | 1979-09-27 | 1979-09-27 | Gas pipe transportation method for fine powder coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12493379A JPS6039607B2 (en) | 1979-09-27 | 1979-09-27 | Gas pipe transportation method for fine powder coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5648325A JPS5648325A (en) | 1981-05-01 |
| JPS6039607B2 true JPS6039607B2 (en) | 1985-09-06 |
Family
ID=14897753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12493379A Expired JPS6039607B2 (en) | 1979-09-27 | 1979-09-27 | Gas pipe transportation method for fine powder coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039607B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268706U (en) * | 1988-11-15 | 1990-05-24 | ||
| JPH02127203U (en) * | 1989-03-30 | 1990-10-19 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59128124A (en) * | 1983-01-11 | 1984-07-24 | Babcock Hitachi Kk | Collecting and transferring apparatus for powdered granules |
| JPH0316821Y2 (en) * | 1988-11-18 | 1991-04-10 | ||
| JPH04224610A (en) * | 1990-12-25 | 1992-08-13 | Sumitomo Metal Ind Ltd | Method for injecting pulverized coal from tuyere in blast furnace |
-
1979
- 1979-09-27 JP JP12493379A patent/JPS6039607B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268706U (en) * | 1988-11-15 | 1990-05-24 | ||
| JPH02127203U (en) * | 1989-03-30 | 1990-10-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5648325A (en) | 1981-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102410552B (en) | Large-scale centralized preparation system for pulverized coal and distribution method | |
| CN105276603B (en) | Coal sludge mixture burning control system based on high temperature flue gas drying and Geldart-D particle | |
| US4526712A (en) | Process for treating radioactive waste | |
| US3854666A (en) | Process for pulverizing coal to ultrafine size | |
| CN105258134A (en) | Coal-sludge composite firing system based on dual-medium flue gas drying and circulating fluidized bed boiler | |
| JP2008517738A (en) | Apparatus and method for separating and concentrating organic and / or non-organic substances | |
| CN105202549A (en) | Coal-sludge multi-fuel combustion system based on two-medium flue gas drying and pneumatic transportation | |
| US4325311A (en) | Method and equipment for treatment of fuel for fluidized bed combustion | |
| JPS6039607B2 (en) | Gas pipe transportation method for fine powder coal | |
| CN206476935U (en) | A kind of carbon black collects after-treatment system and carbon black production line | |
| US4572086A (en) | Fine fuel delivery system with remote drying and on site storage | |
| JPS5987016A (en) | Dust removing device of blast furnace | |
| JPH08296835A (en) | Pulverized coal-fired power generation system | |
| CN116174137A (en) | A kind of slag fine powder production system and using method | |
| JPH045870Y2 (en) | ||
| JP3428461B2 (en) | Removal method of dioxins in exhaust gas | |
| JPH0133522B2 (en) | ||
| CN208332308U (en) | Coal-fired sludge coupled electricity-generation system | |
| JP3306748B2 (en) | Method and apparatus for treating limestone in response to circulating fluidized bed combustion requirements | |
| CN219160362U (en) | Dangerous waste treatment system | |
| JPS6346490Y2 (en) | ||
| JPH0551939U (en) | Collecting pulverized coal processing equipment for conditioning coal equipment | |
| CN111854453A (en) | A method and system for reducing sulfide emission of exhaust gas from coal mills in kiln tail air intake | |
| JPH10503274A (en) | System for producing ash products and energy from waste | |
| JP3626797B2 (en) | Clinker recovery device |