JPH05230469A - Liquefaction of coal - Google Patents
Liquefaction of coalInfo
- Publication number
- JPH05230469A JPH05230469A JP4029432A JP2943292A JPH05230469A JP H05230469 A JPH05230469 A JP H05230469A JP 4029432 A JP4029432 A JP 4029432A JP 2943292 A JP2943292 A JP 2943292A JP H05230469 A JPH05230469 A JP H05230469A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- slurry
- catalyst
- solvent
- reaction
- 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.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は石炭の液化方法に関す
る。FIELD OF THE INVENTION The present invention relates to a method for liquefying coal.
【０００２】[0002]
【従来の技術】従来石炭の液化は石炭と触媒を溶剤でス
ラリー状とし、水素ガスの存在下高温高圧で反応を行な
っている。この場合液化油の収率の向上を図る種々の工
夫が従来よりなされてきた。その手段としては、高性能
な触媒や水素供与性能の優れた溶剤の開発、又、二段液
化のようにプロセスそのものに改良を加えたり、反応前
に石炭を改質することによって石炭の反応性を向上させ
ることなどがありうる。前記手段の中で触媒や溶剤につ
いては研究も多く、性能の優れたものがあるのは周知で
ある。又、最近では石炭を反応前に溶剤で膨張させた
り、石炭の官能基をアルキル化することによって反応性
を向上させるなどの試みがなされていることもよく知ら
れている。2. Description of the Related Art Conventionally, coal is liquefied by making coal and a catalyst into a slurry with a solvent and performing the reaction at high temperature and high pressure in the presence of hydrogen gas. In this case, various measures have been conventionally made to improve the yield of liquefied oil. As means for this, development of high-performance catalysts and solvents with excellent hydrogen donating performance, improvement of the process itself such as two-stage liquefaction, and reforming of coal prior to reaction can improve the reactivity of coal. Can be improved. Of the above-mentioned means, there are many studies on catalysts and solvents, and it is well known that some have excellent performance. It is also well known that attempts have recently been made to expand the coal with a solvent before the reaction and to improve the reactivity by alkylating the functional groups of the coal.
【０００３】[0003]
【発明が解決しようとする課題】しかしこのような試み
は触媒、溶剤、プロセス及び石炭の改質など油収率の向
上に関与する因子を各々独立に手を加えようとするもの
であり、効率的な方法とは言えない。本発明の目的は、
石炭液化反応の油収率の向上に関与する前記因子の内、
触媒、溶剤及び石炭のシステムとしての改善を同時に行
ない、石炭液化の効率を向上させる手段を提供すること
である。However, such an attempt is to independently modify the factors involved in improving the oil yield such as the catalyst, the solvent, the process, and the reforming of coal. Can not be said to be the proper method. The purpose of the present invention is to
Of the above factors involved in improving the oil yield of the coal liquefaction reaction,
It is to provide means for simultaneously improving the system of catalyst, solvent and coal to improve the efficiency of coal liquefaction.
【０００４】[0004]
【課題を解決するための手段】本発明は、石炭と触媒を
溶剤でスラリー状とし、水素ガスの存在下高温高圧で石
炭を液化する方法において、前記スラリーに、水素ガス
と接触させる前に超音波照射する前記方法である。DISCLOSURE OF THE INVENTION The present invention is a method of liquefying coal and a catalyst in a solvent with a solvent at high temperature and high pressure in the presence of hydrogen gas. This is the method of irradiating a sound wave.
【０００５】本発明で使用する石炭はスラリーとするた
めに粒度が約１５０μｍ以下であることが望ましい。The coal used in the present invention preferably has a particle size of about 150 μm or less in order to form a slurry.
【０００６】本発明で使用しうる触媒としては、従来知
られている触媒、例えば二硫化鉄（ＦｅＳ2 ）及び電解
鉄粉と硫黄との混合物、並びに特願平３−１３１，６４
４に開示されている針状ゲーサイトと硫黄成分含有物例
えば硫黄との混合物を用いうる。The catalyst that can be used in the present invention is a conventionally known catalyst such as iron disulfide (FeS 2 ) and a mixture of electrolytic iron powder and sulfur, and Japanese Patent Application No. 3-131,64.
Mixtures of acicular goethite as disclosed in No. 4 with a sulfur component content such as sulfur may be used.
【０００７】本発明で用いうる溶剤としては、クレオソ
ート油と脱晶アントラセン油との重量比１：１の混合
物、石炭液化油（沸点３６０〜５３８℃）、石炭液化油
（２２０〜３６０℃）、テトラリン並びにその他の水素
供与性溶剤、例えばテトラヒドロキノン、ジヒドロアン
トラセン及びテトラヒドロフェナントレン等がある。As the solvent usable in the present invention, a mixture of creosote oil and decrystallized anthracene oil in a weight ratio of 1: 1, coal liquefied oil (boiling point 360 to 538 ° C), coal liquefied oil (220 to 360 ° C) , Tetralin and other hydrogen donating solvents such as tetrahydroquinone, dihydroanthracene and tetrahydrophenanthrene.
【０００８】スラリー中石炭濃度はスラリーとしての流
動性を保つ限りいくらでもよいが、流動させて扱い易い
こと及び経済性の観点から約１０〜６０重量％が好まし
い。この濃度の上限は界面活性剤を用いるときは約６０
重量％であり、用いないときは約４５重量％である。使
用する触媒量は、石炭の乾燥重量に対して、通常１〜１
０重量％である。The concentration of coal in the slurry may be any amount as long as the fluidity of the slurry is maintained, but it is preferably about 10 to 60% by weight from the viewpoints of fluidity and easy handling and economical efficiency. The upper limit of this concentration is about 60 when a surfactant is used.
% By weight, and about 45% by weight when not used. The amount of catalyst used is usually 1 to 1 with respect to the dry weight of coal.
It is 0% by weight.
【０００９】本発明において、照射する超音波は周波数
１６kHz 以上のものである。照射出力は５０Ｗ以上が好
ましい。現在出力１２００Ｗの装置が市場に出ておりこ
れを用いうる。照射時間は５分〜２時間が好ましい。照
射エネルギーは１０〜１５０Ｗ・分／ｇ（石炭）、好ま
しくは２５〜１２０Ｗ・分／ｇ、更に好ましくは５０〜
９０Ｗ・分／ｇである。超音波照射時のスラリー温度は
１０〜２００℃が好ましく、更に好ましくは３０〜１５
０℃である。In the present invention, the ultrasonic wave to be emitted has a frequency of 16 kHz or more. The irradiation output is preferably 50 W or more. A device with an output of 1200 W is currently on the market and can be used. The irradiation time is preferably 5 minutes to 2 hours. The irradiation energy is 10 to 150 W · min / g (coal), preferably 25 to 120 W · min / g, and more preferably 50 to
90 W · min / g. The slurry temperature during ultrasonic irradiation is preferably 10 to 200 ° C., more preferably 30 to 15 ° C.
It is 0 ° C.
【００１０】超音波照射したスラリーを水素ガスと接触
させて反応させるときの条件は、温度は３００〜６００
℃、好ましくは４００〜４８０℃がよく、水素ガス圧は
１００〜３００kg／cm2 、好ましくは１５０〜１９０kg
／cm2 がよい。反応時間は２０分〜１時間が好ましい。The conditions for bringing the slurry irradiated with ultrasonic waves into contact with hydrogen gas for reaction are as follows: the temperature is 300 to 600.
℃, preferably 400 ~ 480 ℃ is good, hydrogen gas pressure is 100 ~ 300kg / cm 2 , preferably 150 ~ 190kg
/ Cm 2 is good. The reaction time is preferably 20 minutes to 1 hour.
【００１１】[0011]
【作用】このように、石炭、触媒及び溶剤を含むスラリ
ーに超音波を照射することにより、石炭と触媒の溶剤中
への均一混合が促進されること、石炭や触媒がより細か
い粒子となって溶剤中に分散し、反応サイトが増加する
こと、さらには超音波照射のさいに発生する微小な泡
（キャビテーション）の持つ高温高圧により石炭粒子表
面又は内部の改質がなされること、により全体として石
炭の液化反応が促進されるものと考えられる。As described above, by irradiating the slurry containing coal, catalyst and solvent with ultrasonic waves, uniform mixing of coal and catalyst in the solvent is promoted, and coal and catalyst become finer particles. As a result of being dispersed in a solvent and increasing the number of reaction sites, and further by modifying the surface or inside of the coal particles by the high temperature and high pressure of minute bubbles (cavitation) generated during ultrasonic irradiation, the overall It is considered that the liquefaction reaction of coal is promoted.
【００１２】[0012]
実施例１ この例で用いた実験装置を図１に示す。図１において、
１は攪拌機、２はスラリー調製槽、３はスラリー供給ポ
ンプ、４は超音波照射装置、５は逆止弁、６はスラリー
供給ポンプ、７は圧力計、８は反応ガス（水素）導入
管、９は攪拌機、１０は熱電対温度計、１１は加熱ヒー
ター、１２はオートクレーブ、１３は減圧弁、１４は流
量計、１５は反応生成物貯槽である。Example 1 The experimental apparatus used in this example is shown in FIG. In FIG.
1 is a stirrer, 2 is a slurry preparation tank, 3 is a slurry supply pump, 4 is an ultrasonic irradiation device, 5 is a check valve, 6 is a slurry supply pump, 7 is a pressure gauge, 8 is a reaction gas (hydrogen) introduction pipe, 9 is a stirrer, 10 is a thermocouple thermometer, 11 is a heater, 12 is an autoclave, 13 is a pressure reducing valve, 14 is a flow meter, and 15 is a reaction product storage tank.
【００１３】１５０μｍ以下に粉砕した太平洋炭を８０
℃、３mmHgの真空で６０分乾燥し、その１２０ｇと、ク
レオソート油及び脱晶アントラセン油の重量比１：１の
混合溶剤１８０ｇをスラリー調製槽２に入れ、更に下記
〜の３種の触媒を別々に用いて添加した。80 pieces of Pacific charcoal crushed to 150 μm or less
The mixture was dried for 60 minutes under a vacuum of 3 mmHg at 60 ° C., 120 g thereof and 180 g of a mixed solvent of creosote oil and decrystallized anthracene oil in a weight ratio of 1: 1 were put in a slurry preparation tank 2, and the following three types of catalysts were further added. Used separately and added.
【００１４】針状ゲーサイトと硫黄との混合物（Ｓ／
Ｆｅモル比＝２） 市販の二硫化鉄第１級品 電解鉄粉と硫黄との混合物（Ｓ／Ｆｅモル比＝２）A mixture of acicular goethite and sulfur (S /
Fe molar ratio = 2) Commercially available iron disulfide primary product Mixture of electrolytic iron powder and sulfur (S / Fe molar ratio = 2)
【００１５】各触媒は、石炭の乾燥重量に対して３重量
％用い、硫黄の存在量は鉄に対してモル比（Ｓ／Ｆｅ）
で２とした。Each catalyst was used in an amount of 3% by weight based on the dry weight of coal, and the amount of sulfur present was a molar ratio of iron to iron (S / Fe).
Was set to 2.
【００１６】スラリー調製槽２で調製したスラリーを、
スラリー供給ポンプ３で超音波照射装置４に送り込み、
周波数２０Hz、出力６００Ｗ、スラリー温度５０℃及び
１００℃の２つの場合について０〜３０分超音波処理
後、オートクレーブ１２に送り込んだ。その後室温で１
００kg／cm2 の水素を導入し、オートクレーブ内容物を
５℃／分で４５０℃まで昇温し、４５０℃で６０分間反
応を行なった。尚、反応中のオートクレーブ内の全圧力
は１５０〜１８０kg／cm2 であった。The slurry prepared in the slurry preparation tank 2 is
The slurry supply pump 3 sends it to the ultrasonic irradiation device 4,
The two cases of a frequency of 20 Hz, an output of 600 W, and a slurry temperature of 50 ° C. and 100 ° C. were sonicated for 0 to 30 minutes and then fed into the autoclave 12. Then at room temperature 1
Hydrogen of 00 kg / cm 2 was introduced, the content of the autoclave was heated to 450 ° C. at 5 ° C./minute, and the reaction was carried out at 450 ° C. for 60 minutes. The total pressure inside the autoclave during the reaction was 150 to 180 kg / cm 2 .
【００１７】図２に、超音波照射時間と得られた液化油
（＝軽質油）の量の関係をグラフで示す。ここで軽質油
とは、炭素数５以上の分子からなる油で、かつ常圧にお
ける沸点が３００℃以下のものをいう。また、得られた
軽質油の対無水無灰炭重量％によって液化反応性を評価
した。この値の高いほど反応性は良好と判断される。こ
のグラフより、超音波の照射を行なうと、照射時間が長
くなるにつれて生成油の収率が高くなっており、又照射
時の処理温度を高く保つことによって収率は更に向上す
ることが分かる。FIG. 2 is a graph showing the relationship between the ultrasonic irradiation time and the amount of liquefied oil (= light oil) obtained. Here, the light oil is an oil composed of molecules having 5 or more carbon atoms and has a boiling point of 300 ° C. or less at normal pressure. Further, the liquefaction reactivity was evaluated by the weight% of anhydrous ashless coal of the obtained light oil. The higher the value, the better the reactivity. From this graph, it can be seen that when ultrasonic irradiation is performed, the yield of produced oil increases as the irradiation time increases, and the yield is further improved by keeping the processing temperature during irradiation high.
【００１８】実施例２ 実施例１と同様の実験を、照射時間を３０分で一定と
し、照射出力を変えて、行なった。その結果（得られた
軽質油の対無水無灰炭重量％）を第１表に示す。Example 2 An experiment similar to that of Example 1 was carried out while the irradiation time was kept constant at 30 minutes and the irradiation output was changed. The results (weight% of the obtained light oil with respect to anhydrous ashless coal) are shown in Table 1.
【００１９】 第 １ 表 触 媒 照射出力（Ｗ） ─── ──────────────────── 0 100 150 200 250 300 ───────────────────── 53.5 54.8 55.1 57.7 57.9 59.1 47.0 48.3 50.5 50.9 51.8 52.0 34.4 36.5 38.3 40.0 40.9 42.6 ────────────────────────Table 1 Catalyst irradiation output (W) ──────────────────────── 0 100 150 200 250 300 ───────── ───────────── 53.5 54.8 55.1 57.7 57.9 59.1 47.0 48.3 50.5 50.9 51.8 52.0 34.4 36.5 38.3 40.0 40.9 42.6 ─────────────────── ─────
【００２０】[0020]
【発明の効果】本発明方法によれば、石炭、触媒、溶
剤、反応条件（水素ガス圧力、反応温度、反応時間な
ど）が同じであっても石炭液化の効率を向上させること
ができる。According to the method of the present invention, the efficiency of coal liquefaction can be improved even if coal, catalyst, solvent and reaction conditions (hydrogen gas pressure, reaction temperature, reaction time, etc.) are the same.
【図１】実施例で用いた本発明の石炭を液化する方法に
用いる装置の１例。FIG. 1 is an example of an apparatus used in the method for liquefying coal of the present invention used in Examples.
【図２】実施例２で得られた、本発明における超音波照
射時間と得られた液化油（＝軽質油）の量の関係を示す
グラフ。FIG. 2 is a graph showing the relationship between the ultrasonic irradiation time in the present invention obtained in Example 2 and the amount of liquefied oil (= light oil) obtained.
２…スラリー調製槽 ４…超音波照射装置 ８…反応ガス（水素）導入管 １２…オートクレーブ １５…反応生成物貯槽 2 ... Slurry preparation tank 4 ... Ultrasonic irradiation device 8 ... Reaction gas (hydrogen) introduction pipe 12 ... Autoclave 15 ... Reaction product storage tank
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年３月２５日[Submission date] March 25, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００６】本発明で使用しうる触媒としては、従来知
られている触媒、例えば二硫化鉄（ＦｅＳ2 ）及び電解
鉄粉と硫黄との混合物、並びに特願平３−１３１，６４
４に開示されている針状ゲーサイトと硫黄成分含有物例
えば硫黄との混合物等を用いうる。The catalyst that can be used in the present invention is a conventionally known catalyst such as iron disulfide (FeS 2 ) and a mixture of electrolytic iron powder and sulfur, and Japanese Patent Application No. 3-131,64.
Etc. may use a needle-like goethite and sulfur compound-containing disclosed 4 for example mixtures of sulfur.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１１[Correction target item name] 0011
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１１】[0011]
【作用】このように、石炭、触媒及び溶剤を含むスラリ
ーに超音波を照射することにより、石炭と触媒の溶剤中
への均一混合が促進されること、石炭や触媒がより細か
い粒子となって溶剤中に分散し、反応サイトが増加する
こと、さらには超音波照射のさいに発生する微小な泡
（キャビテーション）の崩壊時に生じる高温高圧により
石炭粒子表面又は内部の改質がなされること等により全
体として石炭の液化反応が促進されるものと考えられ
る。As described above, by irradiating the slurry containing coal, catalyst and solvent with ultrasonic waves, uniform mixing of coal and catalyst in the solvent is promoted, and coal and catalyst become finer particles. dispersed in a solvent, the reaction site increases, more such as by coal particle surface or the interior of the reforming by high temperature and pressure generated upon the collapse of fine bubbles generated in Sai ultrasonic irradiation (cavitation) is made It is considered that the liquefaction reaction of coal is promoted as a whole.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】実施例１で用いた本発明の石炭を液化する方法
に用いる装置の１例。FIG. 1 is an example of an apparatus used in the method for liquefying coal of the present invention used in Example 1 .
【図２】実施例２で得られた、本発明における超音波照
射時間と得られた液化油（＝軽質油）の量の関係を示す
グラフ。FIG. 2 is a graph showing the relationship between the ultrasonic irradiation time in the present invention obtained in Example 2 and the amount of liquefied oil (= light oil) obtained.
【符号の説明】 ２…スラリー調製槽 ４…超音波照射装置 ８…反応ガス（水素）導入管 １２…オートクレーブ １５…反応生成物貯槽[Explanation of Codes] 2 ... Slurry preparation tank 4 ... Ultrasonic irradiation device 8 ... Reaction gas (hydrogen) introduction tube 12 ... Autoclave 15 ... Reaction product storage tank
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ１０Ｇ 1/06 Ｅ 2115−4Ｈ // Ｃ０７Ｂ 61/00 ３００ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C10G 1/06 E 2115-4H // C07B 61/00 300
Claims (1)
素ガスの存在下で石炭を液化する方法において、前記ス
ラリーに水素ガスと接触させる前に超音波照射する前記
方法。1. A method for liquefying coal in the presence of hydrogen gas, wherein the coal and the catalyst are slurried with a solvent, and ultrasonic irradiation is performed before the slurry is contacted with the hydrogen gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4029432A JPH05230469A (en) | 1992-02-17 | 1992-02-17 | Liquefaction of coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4029432A JPH05230469A (en) | 1992-02-17 | 1992-02-17 | Liquefaction of coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05230469A true JPH05230469A (en) | 1993-09-07 |
Family
ID=12275980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4029432A Withdrawn JPH05230469A (en) | 1992-02-17 | 1992-02-17 | Liquefaction of coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05230469A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU681983B2 (en) * | 1994-01-13 | 1997-09-11 | New Energy And Industrial Technology Development Organization | Process of coal liquefaction |
| WO2011163300A2 (en) * | 2010-06-22 | 2011-12-29 | Quantex Research Corporation | Novel hydrogenated solvents for coal liquefaction |
| US8226816B2 (en) | 2006-05-24 | 2012-07-24 | West Virginia University | Method of producing synthetic pitch |
| US8449632B2 (en) | 2007-05-24 | 2013-05-28 | West Virginia University | Sewage material in coal liquefaction |
| US8465561B2 (en) | 2007-05-24 | 2013-06-18 | West Virginia University | Hydrogenated vegetable oil in coal liquefaction |
| US8512551B2 (en) | 2007-05-24 | 2013-08-20 | West Virginia University | Forming cement as a by-product of coal liquefaction |
| US8597382B2 (en) | 2007-05-24 | 2013-12-03 | West Virginia University | Rubber material in coal liquefaction |
| CN104947139A (en) * | 2013-10-21 | 2015-09-30 | 夏五湖 | Coal electric liquefaction electrolysis method |
-
1992
- 1992-02-17 JP JP4029432A patent/JPH05230469A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU681983B2 (en) * | 1994-01-13 | 1997-09-11 | New Energy And Industrial Technology Development Organization | Process of coal liquefaction |
| US8226816B2 (en) | 2006-05-24 | 2012-07-24 | West Virginia University | Method of producing synthetic pitch |
| US8449632B2 (en) | 2007-05-24 | 2013-05-28 | West Virginia University | Sewage material in coal liquefaction |
| US8465561B2 (en) | 2007-05-24 | 2013-06-18 | West Virginia University | Hydrogenated vegetable oil in coal liquefaction |
| US8512551B2 (en) | 2007-05-24 | 2013-08-20 | West Virginia University | Forming cement as a by-product of coal liquefaction |
| US8591727B2 (en) | 2007-05-24 | 2013-11-26 | West Virginia University | Pipeline crude oil in coal liquefaction |
| US8597382B2 (en) | 2007-05-24 | 2013-12-03 | West Virginia University | Rubber material in coal liquefaction |
| US8597503B2 (en) | 2007-05-24 | 2013-12-03 | West Virginia University | Coal liquefaction system |
| US8882862B2 (en) | 2007-05-24 | 2014-11-11 | West Virginia University | Method of forming a mesophase pitch from a coal extract suitable for processing to a high value coke |
| WO2011163300A2 (en) * | 2010-06-22 | 2011-12-29 | Quantex Research Corporation | Novel hydrogenated solvents for coal liquefaction |
| WO2011163300A3 (en) * | 2010-06-22 | 2012-04-12 | Quantex Research Corporation | Novel hydrogenated solvents for coal liquefaction |
| CN104947139A (en) * | 2013-10-21 | 2015-09-30 | 夏五湖 | Coal electric liquefaction electrolysis method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990518 |