JPS6254357B2 - - Google Patents
Info
- Publication number
- JPS6254357B2 JPS6254357B2 JP56148341A JP14834181A JPS6254357B2 JP S6254357 B2 JPS6254357 B2 JP S6254357B2 JP 56148341 A JP56148341 A JP 56148341A JP 14834181 A JP14834181 A JP 14834181A JP S6254357 B2 JPS6254357 B2 JP S6254357B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- slurry
- gasification
- water
- dispersant
- 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 38
- 239000002002 slurry Substances 0.000 claims description 31
- 238000002309 gasification Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 18
- 239000002270 dispersing agent Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- -1 alkylbenzene sulfonates Chemical class 0.000 description 23
- 239000002245 particle Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 238000005187 foaming Methods 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000003093 cationic surfactant Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 239000003476 subbituminous coal Substances 0.000 description 4
- 239000003945 anionic surfactant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical class O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は、原料石炭を60〜90%の高濃度のスラ
リーにしかつガス化触媒を均一に分散させてガス
化炉へ供給し、高いガス化効率で合成ガスを得る
ことができる石炭のガス化方法に関するものであ
る。[Detailed Description of the Invention] The present invention makes raw coal into a slurry with a high concentration of 60 to 90%, uniformly disperses a gasification catalyst, and supplies the slurry to a gasifier to obtain synthesis gas with high gasification efficiency. The present invention relates to a coal gasification method that can be used to gasify coal.
従来から、石炭を部分酸化して合成ガスを得る
プロセスにおいて、原料石炭を粉砕して石炭・水
スラリーを調製しガス化炉へ供給する湿式供給法
が提案されているが、スラリー濃度が50%以下と
低いため、ガス化炉内で大量の水を蒸発すること
になり、ガス化効率が低くなるという問題があつ
た。 Conventionally, in the process of partially oxidizing coal to obtain synthesis gas, a wet feeding method has been proposed by pulverizing raw coal to prepare a coal/water slurry and supplying it to the gasifier, but the slurry concentration is 50%. Since the water content is low, a large amount of water must be evaporated in the gasifier, resulting in a low gasification efficiency.
本発明者らは、上記の問題を解決すべく鋭意研
究を重ねた結果、粉砕石炭と少量の水との混合物
に発泡性の分散剤または水の表面張力を僅か
(0.1〜5dyne/cm)に低下させる作用をもつ分散
剤を添加し十分混合すると、発泡性の分散剤を添
加した場合は生成する気泡が石炭粒子層内に介在
することによつて流動性が生じ、水の表面張力を
僅かに低下させる分散剤を添加した場合は石炭粒
子表面に水が均一に付着して石炭粒子同志が滑り
易くなつて流動性が生じ、またスラリー調製の際
にガス化触媒を添加することによつて、触媒を均
一に分散させることができガス化効率が向上する
ことを知見した。 As a result of extensive research in order to solve the above problems, the present inventors have found that a mixture of pulverized coal and a small amount of water is coated with a foaming dispersant or water with a slight surface tension (0.1 to 5 dyne/cm). When a dispersant that has the effect of lowering is added and thoroughly mixed, the air bubbles created when a foaming dispersant is added are interposed within the coal particle layer, creating fluidity and slightly reducing the surface tension of water. When a dispersant is added to lower the coal particle surface, water adheres uniformly to the surface of the coal particles, making them slippery and creating fluidity.Additionally, by adding a gasification catalyst during slurry preparation, It was discovered that the catalyst can be uniformly dispersed and the gasification efficiency can be improved.
本発明は上記の諸点に鑑みなされたもので、石
炭をガス化炉へ供給し石炭を部分酸化して合成ガ
スを得る方法において、粉砕石炭、水、分散剤お
よびガス化触媒を十分混合してガス化触媒を均一
に分散させた石炭60〜90%の高濃度のスラリーを
調製し、この高濃度のスラリーをガス化炉へ供給
することにより、高いガス化効率で石炭をガス化
することができる方法を提供せんとするものであ
る。 The present invention has been made in view of the above points, and includes a method for supplying coal to a gasification furnace and partially oxidizing the coal to obtain synthesis gas. Coal can be gasified with high gasification efficiency by preparing a highly concentrated slurry of 60 to 90% coal with a gasification catalyst uniformly dispersed therein and supplying this highly concentrated slurry to the gasifier. The aim is to provide a method that can be used.
以下、本発明の構成を図面に基づいて説明す
る。第1図は本発明の方法を実施する装置の一例
を示している。原料石炭(粘結炭、非粘結炭のい
ずれでもよい)を予め10mm以下程度に粗砕した
後、さらに乾式粉砕機1によつて200メツシユ通
過率10〜80℃程度、望ましくは30〜70%に微粉砕
する。この粉砕炭、ガス化触媒、水および発泡性
分散剤もしくは水の表面張力を僅かに低下させる
作用をもつ分散剤を混練機2に供給し、十分混練
することによつて流動性のある高濃度スラリーが
調製される。このときの分散剤の添加量は、対石
炭比0.01〜3重量%、望ましくは0.3〜1.5重量%
であり、スラリーの濃度(石炭含有量)はドライ
ベースで60〜90重量%、望ましくは65〜80重量%
である。またこのスラリーの粘度は300〜3000c.p
程度である。 Hereinafter, the configuration of the present invention will be explained based on the drawings. FIG. 1 shows an example of an apparatus for carrying out the method of the invention. Raw coal (either coking coal or non-caking coal may be used) is coarsely crushed in advance to about 10 mm or less, and then further crushed by dry pulverizer 1 to a 200 mesh passing rate of about 10 to 80 degrees Celsius, preferably 30 to 70 degrees Celsius. Finely grind to %. The pulverized coal, gasification catalyst, water, and a foaming dispersant or a dispersant that has the effect of slightly lowering the surface tension of water are supplied to the kneader 2 and thoroughly kneaded to create a fluidized high concentration. A slurry is prepared. The amount of dispersant added at this time is 0.01 to 3% by weight, preferably 0.3 to 1.5% by weight based on the coal.
The concentration of the slurry (coal content) is 60-90% by weight on a dry basis, preferably 65-80% by weight.
It is. Also, the viscosity of this slurry is 300 to 3000 c.p.
That's about it.
本発明において用いられるガス化触媒として
は、鉄をはじめとする周期律表族金属、または
周期律表族aのアルカリ土類金属などが適して
おり、これらの金属は硝酸塩、塩化物、硫酸塩ま
たは酸化物の形でスラリー調製の際に水とともに
加えられる。 Suitable gasification catalysts used in the present invention are metals of the periodic table group such as iron, or alkaline earth metals of group a of the periodic table, and these metals can be used in the form of nitrates, chlorides, sulfates, etc. Or added in oxide form with water during slurry preparation.
また本発明において用いられる発泡性分散剤
は、鉄をはじめとする周期律表族金属、または
周期律表族aのアルカリ土類金属などが適して
おり、これらの金属は硝酸塩、塩化物、硫酸塩ま
たは酸化物の形でスラリー調製の際に水とともに
加えられる。 In addition, the foaming dispersant used in the present invention is suitably a metal of the periodic table group such as iron, or an alkaline earth metal of group a of the periodic table, and these metals are It is added in salt or oxide form along with water during slurry preparation.
また本発明において用いられる発泡性分散剤
は、アニオン系、ノニオン系、カチオン系の界面
活性剤などを単独でまたは組み合わせて用いら
れ、炭種によつて適宜選択される。具体的にはア
ニオン系界面活性剤としては、アルキルベンゼン
スルホン酸塩、アルキル硫酸エステル塩、ポリオ
キシエチレンアルキル(アルキルフエノール)硫
酸エステル塩、アルキルリン酸エステル塩、ジア
ルキルスルホコハク酸エステル塩、アクリル酸も
しくは/および無水マレイン酸共重合体、多環式
芳香族スルホン化物もしくはホルマリン化合物な
どが使用され、カチオン系界面活性剤としては、
アルキルアミン塩、第4級アミン塩などが使用さ
れ、ノニオン系界面活性剤としては、ポリオキシ
アルキルエーテル、ポリオキシエチレンアルキル
フエノールエーテル、オキシエチレン・オキシプ
ロピレンブロツクポリマー、ポリオキシエチレン
アルキルアミン、ソルビタン脂肪酸エステル、ポ
リオキシエチレンソルビタン脂肪酸エステルなど
が使用され、両性系界面活性剤としては、アルキ
ルベタインなどが使用され、また1,2,3モノ
アミン、ジアミンなどのアミン化合物が使用され
る。また本発明において用いられる水の表面張力
を僅かに低下させる作用をもつ分散剤としては、
アニオン系、ノニオン系、カチオン系の界面活性
剤などを単独でまたは組み合わせて用いられ、炭
種によつて適宜選択される。具体的にはアニオン
系界面活性剤としては、脂肪油硫酸エステル塩、
高級アルコール硫酸エステル塩、非イオンエーテ
ル硫酸エステル塩、オレフイン硫酸エステル塩、
アルキルアリルスルホン酸塩、二塩基酸エステル
スルホン酸塩、ジアルキルスルホこはく酸塩、ア
シルザルコシネートなどが使用され、ノニオン系
界面活性剤としては、ポリオキシエチレン脂肪酸
エステル、脂肪酸アルコールポリオキシエチレン
エーテル、アルキルフエノールポリオキシエチレ
ンエーテル、多価アルコール脂肪酸エステル、脂
肪酸のエタノールアマイドなどが使用され、カチ
オン系界面活性剤としては、アルキルトリメチル
アンモニウムクロライド、アルキルジメチルベン
ジルアンモニウムクロライド、アルキルピリジニ
ウム塩などが用いられ、両性系界面活性剤として
は、高級アルキルアミノ酸などが用いられる。 The foaming dispersant used in the present invention may be anionic, nonionic, cationic surfactants, etc., used alone or in combination, and is appropriately selected depending on the type of coal. Specifically, anionic surfactants include alkylbenzene sulfonates, alkyl sulfate ester salts, polyoxyethylene alkyl (alkylphenol) sulfate ester salts, alkyl phosphate ester salts, dialkyl sulfosuccinate ester salts, acrylic acid and/or and maleic anhydride copolymers, polycyclic aromatic sulfonates, formalin compounds, etc. are used, and as cationic surfactants,
Alkyl amine salts, quaternary amine salts, etc. are used, and nonionic surfactants include polyoxyalkyl ethers, polyoxyethylene alkyl phenol ethers, oxyethylene/oxypropylene block polymers, polyoxyethylene alkyl amines, and sorbitan fatty acids. Ester, polyoxyethylene sorbitan fatty acid ester, etc. are used. As the amphoteric surfactant, alkyl betaine and the like are used, and amine compounds such as 1,2,3 monoamine and diamine are used. In addition, the dispersants that have the effect of slightly lowering the surface tension of water used in the present invention include:
Anionic, nonionic, and cationic surfactants are used alone or in combination, and are appropriately selected depending on the type of coal. Specifically, anionic surfactants include fatty oil sulfate salts,
Higher alcohol sulfate salts, nonionic ether sulfate salts, olefin sulfate salts,
Alkylaryl sulfonates, dibasic acid ester sulfonates, dialkyl sulfosuccinates, acyl sarcosinates, etc. are used, and nonionic surfactants include polyoxyethylene fatty acid esters, fatty acid alcohol polyoxyethylene ethers, Alkylphenol polyoxyethylene ether, polyhydric alcohol fatty acid ester, fatty acid ethanolamide, etc. are used, and as cationic surfactants, alkyltrimethylammonium chloride, alkyldimethylbenzylammonium chloride, alkylpyridinium salt, etc. are used, and amphoteric surfactants are used. As the surfactant, higher alkyl amino acids and the like are used.
混練機2で調製されたスラリーは、一旦コレク
トタンク3に貯留された後、高圧スラリーポンプ
4によつて線速度0.5〜5m/sec、望ましくは2
〜4m/secでガス化炉5へ圧送され、酸素、水蒸
気とともにガス化炉5内に噴出される。石炭粒子
は高温部分酸化、水性ガス化反応などによつてガ
ス化炉5内を下向きに流れる間にガス化される。
ガス化炉5内の温度は1100〜1700℃、望ましくは
1400〜1600℃であり、圧力は10〜90atmに維持さ
れている。スラリーはガス化炉5内に噴出された
とき、石炭粒子間の凝集は殆ど起こらず、分散性
がよく、速やかに酸素と混合し、高いガス化効率
でガス化して水素、一酸化炭素を主成分とする合
成ガスに転換される。このときの主な反応式はつ
ぎのとおりである。 The slurry prepared by the kneading machine 2 is once stored in a collection tank 3, and then pumped by a high-pressure slurry pump 4 at a linear velocity of 0.5 to 5 m/sec, preferably 2 m/sec.
It is force-fed to the gasifier 5 at a rate of ~4 m/sec, and is ejected into the gasifier 5 together with oxygen and water vapor. The coal particles are gasified while flowing downward in the gasifier 5 by high-temperature partial oxidation, water gasification reaction, and the like.
The temperature inside the gasifier 5 is 1100 to 1700°C, preferably
The temperature is 1400-1600℃ and the pressure is maintained at 10-90 atm. When the slurry is ejected into the gasifier 5, there is almost no aggregation between coal particles, it has good dispersibility, quickly mixes with oxygen, and is gasified with high gasification efficiency to mainly produce hydrogen and carbon monoxide. It is converted into syngas as a component. The main reaction formula at this time is as follows.
C+2H2→CH4
C+H2O→CO+H2
C+2H2O→CO2+2H2
C+CO2→2CO
CO+H2O→CO2+H2
C+O2→CO2
2C+O2→2CO
なお6はロツクホツパ、7は廃熱ボイラ、8は
沈殿槽、9,10は熱交換器である。C+2H 2 →CH 4 C+H 2 O→CO+H 2 C+2H 2 O→CO 2 +2H 2 C+CO 2 →2CO CO+H 2 O→CO 2 +H 2 C+O 2 →CO 2 2C+O 2 →2CO Note that 6 is a lock hopper and 7 is a waste heat boiler. , 8 is a settling tank, and 9 and 10 are heat exchangers.
第2図は本発明の方法を実施する装置の他の例
を示している。すなわち原料石炭を予め10mm以下
程度に粗砕した後、湿式粉砕機11に供給する。
同時に水、分散剤およびガス化触媒を加え、湿式
粉砕機11内において原料石炭を粉砕するととも
に、原料石炭、水、分散剤およびガス化触媒を十
分混練することによつて触媒を均一に分散させた
流動性のある高濃度スラリーを調製する。粉砕後
の石炭粒度は200メツシユ通過率10〜80%、望ま
しくは30〜70%、湿式粉砕機11の出口における
スラリーの粘度は300〜3000c.p程度である。他の
構成は第1図の場合と同様である。 FIG. 2 shows another example of an apparatus for carrying out the method of the invention. That is, raw coal is crushed in advance into particles of about 10 mm or less, and then supplied to the wet crusher 11.
At the same time, water, a dispersant, and a gasification catalyst are added, and the raw coal is pulverized in the wet pulverizer 11, and the catalyst is uniformly dispersed by thoroughly kneading the raw coal, water, dispersant, and gasification catalyst. Prepare a fluid, highly concentrated slurry. The coal particle size after pulverization is 200 mesh passing rate 10 to 80%, preferably 30 to 70%, and the viscosity of the slurry at the outlet of the wet pulverizer 11 is about 300 to 3000 c.p. The other configurations are the same as in the case of FIG.
つぎに本発明の実施例について説明する。 Next, embodiments of the present invention will be described.
実施例 1
オーストラリア産の亜瀝青炭を予め粗砕した
後、乾式粉砕機によつて粉砕した。この粉砕炭、
水、水の表面張力を低下させる分散剤(石炭に対
して1.0重量%)、およびガス化触媒を混練機に供
給し、十分混練して高濃度スラリーを調製した。
ガス化触媒としてFe2O3を使用し、Fe重量が石炭
に対して0.5重量%となるように添加した。なお
オーストラリア産の亜瀝青炭の性状は下記のとお
りであつた。Example 1 Australian sub-bituminous coal was crushed in advance and then crushed using a dry crusher. This crushed charcoal,
Water, a dispersant that lowers the surface tension of water (1.0% by weight based on coal), and a gasification catalyst were supplied to a kneader and thoroughly kneaded to prepare a highly concentrated slurry.
Fe 2 O 3 was used as a gasification catalyst and was added so that the Fe weight was 0.5% by weight based on the coal. The properties of Australian sub-bituminous coal were as follows.
水分 7.0%
灰分 7.1%
揮発分 26.2%
固定炭素 59.7%
燃料比 2.27
混練機出口のスラリーの性状は、粒度1mm以下
で200メツシユ通過率25%、スラリー濃度70%
(ドライベース)、粘度1400c.pであつた。ついで
このスラリーをガス化炉に供給して、圧力
25atm、温度1400℃の条件で酸化剤として酸素を
吹き込んでガス化した。得られた生成ガスの組成
は下記のとおりであつた。Moisture 7.0% Ash 7.1% Volatile content 26.2% Fixed carbon 59.7% Fuel ratio 2.27 The properties of the slurry at the exit of the kneader are as follows: particle size is 1 mm or less, 200 mesh passing rate is 25%, and slurry concentration is 70%.
(dry base), viscosity 1400 c.p. This slurry is then supplied to a gasifier to reduce the pressure
It was gasified by blowing oxygen as an oxidizing agent at 25 atm and 1400°C. The composition of the resulting gas was as follows.
H2 37.1%
CO 46.3%
CO2 16.0%
N2 0.4%
CH4 0.03%
H2S 0.13%
実施例 2
中国産の亜瀝青炭を予め粗砕した後、乾式粉砕
機によつて粉砕した。この粉砕炭、水、発泡性分
散剤(石炭に対して1.0重量%)、およびガス化触
媒を混練機に供給し、十分混練して高濃度スラリ
ーを調製した。ガス化触媒としてFe2O3を使用
し、石炭に対して1.0重量%添加した。なお中国
産の亜瀝青炭の性状は下記のとおりであつた。H 2 37.1% CO 46.3% CO 2 16.0% N 2 0.4% CH 4 0.03% H 2 S 0.13% Example 2 Sub-bituminous coal from China was crushed in advance and then crushed using a dry crusher. This pulverized coal, water, foaming dispersant (1.0% by weight based on coal), and gasification catalyst were supplied to a kneader and thoroughly kneaded to prepare a highly concentrated slurry. Fe 2 O 3 was used as a gasification catalyst and was added in an amount of 1.0% by weight based on the coal. The properties of sub-bituminous coal produced in China were as follows.
水分 7.2%
灰分 8.9%
揮発分 28.2%
固定炭素 60.0%
燃料比 2.13
混練機出口のスラリーの性状は、粒度1mm以下
で200メツシユ通過率30%、スラリー濃度76%
(ドライベース)、粘度3900c.pであつた。ついで
このスラリーをガス化炉に供給して、圧力
10atm、温度1400℃の条件で酸化剤として酸素を
吹き込んでガス化した。得られた生成ガスの組成
は下記のとおりであつた。Moisture 7.2% Ash 8.9% Volatile content 28.2% Fixed carbon 60.0% Fuel ratio 2.13 The properties of the slurry at the exit of the kneader are as follows: particle size is 1 mm or less, 200 mesh passing rate is 30%, and slurry concentration is 76%.
(dry base), viscosity 3900c.p. This slurry is then supplied to a gasifier to reduce the pressure
It was gasified by blowing oxygen as an oxidizing agent under the conditions of 10 atm and 1400°C. The composition of the resulting gas was as follows.
H2 35.2%
CO 52.1%
CO2 12.3%
N2 0.30%
CH4 0.04%
H2S 0.02%
以上説明したように、本発明の方法によれば、
スラリー濃度が高いため水の蒸発によるガス化効
率の低下が小さくて済み、またスラリー調製の際
に、水の中にガス化触媒を添加することにより、
スラリー中に触媒を均一に分布させることができ
るので、ガス化効率を高めることができるととも
に触媒の添加量を低減できるなどの効果を奏す
る。H 2 35.2% CO 52.1% CO 2 12.3% N 2 0.30% CH 4 0.04% H 2 S 0.02% As explained above, according to the method of the present invention,
Because the slurry concentration is high, the drop in gasification efficiency due to water evaporation is small, and by adding a gasification catalyst to the water when preparing the slurry,
Since the catalyst can be uniformly distributed in the slurry, the gasification efficiency can be increased and the amount of catalyst added can be reduced.
第1図は本発明の方法を実施する装置の一例を
示すフローシート、第2図は他の例を示すフロー
シートである。
1…乾式粉砕機、2…混練機、3…コレクトタ
ンク、4…高圧スラリーポンプ、5…ガス化炉、
6…ロツクホツパ、7…廃熱ボイラ、8…沈殿
槽、9,10…熱交換器、11…湿式粉砕機。
FIG. 1 is a flow sheet showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a flow sheet showing another example. 1...Dry crusher, 2...Kneader, 3...Collect tank, 4...High pressure slurry pump, 5...Gasifier,
6... Lock hopper, 7... Waste heat boiler, 8... Sedimentation tank, 9, 10... Heat exchanger, 11... Wet crusher.
Claims (1)
合成ガスを得る方法において、粉砕石炭、水、分
散剤およびガス化触媒を十分混合してガス化触媒
を分散させた石炭60〜90%の高濃度のスラリーを
調製し、この高濃度のスラリーをガス化炉へ供給
することを特徴とする石炭のガス化方法。1 In a method of supplying coal to a gasification furnace and partially oxidizing the coal to obtain synthesis gas, pulverized coal, water, a dispersant, and a gasification catalyst are sufficiently mixed to form a mixture of 60 to 90% coal with a gasification catalyst dispersed therein. A coal gasification method characterized by preparing a highly concentrated slurry of and supplying this highly concentrated slurry to a gasification furnace.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14834181A JPS5849791A (en) | 1981-09-19 | 1981-09-19 | Gasification of coal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14834181A JPS5849791A (en) | 1981-09-19 | 1981-09-19 | Gasification of coal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5849791A JPS5849791A (en) | 1983-03-24 |
JPS6254357B2 true JPS6254357B2 (en) | 1987-11-14 |
Family
ID=15450598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14834181A Granted JPS5849791A (en) | 1981-09-19 | 1981-09-19 | Gasification of coal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5849791A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6230635A (en) * | 1985-07-30 | 1987-02-09 | Chugai Ro Kogyo Kaisha Ltd | Evacuation furnace for cathode ray tube |
JPH0530496U (en) * | 1991-09-26 | 1993-04-23 | 株式会社共立 | Power blower |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5667393A (en) * | 1979-11-07 | 1981-06-06 | Univ Tohoku | Catalytic gasification of coal |
-
1981
- 1981-09-19 JP JP14834181A patent/JPS5849791A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5667393A (en) * | 1979-11-07 | 1981-06-06 | Univ Tohoku | Catalytic gasification of coal |
Also Published As
Publication number | Publication date |
---|---|
JPS5849791A (en) | 1983-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4334857B2 (en) | Biomass reforming method and reformed biomass | |
JPH0323117B2 (en) | ||
EP2504411A1 (en) | Device and method for generating a synthesis gas from processed biomass by entrained-flow gasification | |
WO2012101964A1 (en) | Low-grade coal slurry production method, low-grade coal slurry production device, and low-grade coal gasification system | |
JP2002155288A (en) | Method for coal gasification | |
JPS6254357B2 (en) | ||
CN105400548A (en) | Coal hydrogasification method and system | |
JPH0328294A (en) | Partial oxidation of hazardous detroleum waste of low calorific value | |
JPS6337836B2 (en) | ||
JPS625477B2 (en) | ||
JPS6254358B2 (en) | ||
JPH0315957B2 (en) | ||
JPH0248457B2 (en) | ||
JPS609077B2 (en) | Fuel composition and method for producing the same | |
CA2442426C (en) | A process for the production of a fly ash slurry | |
AU2012210130B2 (en) | Method for Producing Low-Grade Coal Slurry, Apparatus for Producing Low-Grade Coal Slurry, and System for Gasifying Low-Grade Coal | |
JPH0248456B2 (en) | ||
JP2625240B2 (en) | Coal / water slurry production method | |
JPS58117253A (en) | Pitch composition | |
AU2001260587A1 (en) | A process for the production of a fly ash slurry | |
KR800000336B1 (en) | Preparation of solid fuel-water slurries | |
JPS6270490A (en) | Production of high-concentration coal-water slurry | |
JPS6270492A (en) | Production of high-concentration coal-water method and apparatus for slurry | |
JPS5918791A (en) | Manufacture of slurry of granulate of pulverized coal | |
JPS58214328A (en) | Aqueous coal slurry composition |