JPS59140295A - Pretreatment of coal - Google Patents
Pretreatment of coalInfo
- Publication number
- JPS59140295A JPS59140295A JP18729282A JP18729282A JPS59140295A JP S59140295 A JPS59140295 A JP S59140295A JP 18729282 A JP18729282 A JP 18729282A JP 18729282 A JP18729282 A JP 18729282A JP S59140295 A JPS59140295 A JP S59140295A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- oil
- particles
- slurry
- solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Liquid Carbonaceous Fuels (AREA)
Abstract
Description
【発明の詳細な説明】
現在1石炭−曲スラリー製造は石炭を70〜80%が2
00メツシユ(74μ)以下になるように微粉砕した後
に1石炭粒子は50〜80℃に加温されているM貝燃料
油中に加えられてから強力に攪拌混合することにより燃
料i+t−+中に均一分散される。しかし1石炭粒子は
吸着水や表面上の極性基のために親水性を示し燃料41
」に対して疎油性を示すこと、また石炭粒子には多数の
細孔があるために表面積が増加し表面自由エネルギーが
大きくなるので凝集合一しやすくなり、凝集合一は粒子
径の増大をもたらし1石炭粒子の沈降速度を増加させ、
沈降分離した石炭粒子は強固な凝集体を形成し、再流動
しな(なる。そこでそれを防止するために微粉砕された
石炭粒子とN質燃料曲の混合物に05%以下の安定化薬
剤を添加することにより1重質燃料油中の石炭粒子の安
定性を増大させ安定な石炭−曲スラリー製造を行ってい
る。しかし安定化剤の添加だ(すではスラリーの安定性
は充分でなく。[Detailed Description of the Invention] Currently, 1 coal-bent slurry production uses 70-80% of coal as 2
After being finely pulverized to 0.00 mesh (74μ) or less, each coal particle is added to M shell fuel oil heated to 50 to 80°C, and then vigorously stirred and mixed to form fuel i+t-+. evenly distributed. However, coal particles exhibit hydrophilic properties due to adsorbed water and polar groups on the surface of the fuel.
Coal particles have many pores, which increases the surface area and increases the surface free energy, making it easier to aggregate and coalesce, and coal particles increase the particle size. 1 increases the sedimentation rate of coal particles,
Sedimentated and separated coal particles form strong aggregates and do not reflow.In order to prevent this, a stabilizing agent of 0.5% or less is added to the mixture of finely pulverized coal particles and N-quality fuel. By adding a stabilizer, the stability of coal particles in heavy fuel oil is increased and a stable coal-bent slurry is produced. However, the addition of a stabilizer does not provide sufficient stability to the slurry.
時間の経過と共に石炭の細孔中に油が浸透していき、そ
のためにガスが発生[2,蓄積される。As time passes, oil penetrates into the pores of the coal, resulting in gas generation [2, accumulation].
そのために浴剤としての油が減少し、急激な粘度上昇が
生じてハシドリシジ操作が困難となる等の問題が生じて
おり、何らかの対策が望才れている。This has led to problems such as a decrease in the amount of oil used as a bath agent and a rapid increase in viscosity, making it difficult to operate the bath.Therefore, some kind of countermeasure is desired.
そこで不発明は石炭−曲スラリーの安定性を向上させう
ろことを可能とする石炭の前処理法を提供することを目
的としてな・されたものであり、微粉砕された石炭に溶
剤を加えて9常圧または加圧下で攪拌を行いながら刃口
熱処理、 i+11えば、好ましくは、100〜450
℃の温度域でかつ零時間から数時間加熱処理することを
特徴とする石炭の前処理方法を提供するものであり9本
発明による前処理を行なった後の石炭に爪質燃料曲を加
えて混合して均質な石炭−曲スラリーを調製することに
より、安定化剤の添vIJ童か従来の前処理を行なわな
い場合に比べ半分り、下でよぐ、適用石炭の粒径が従来
の前処理を行なわない場合より太き(ても安定性かよい
スラリーが調製でき、工業的な要求を充分に満足するこ
とが可能となる。これは1次のような理由による。すな
わち、加熱溶剤処理により脱水、脱ガス反応が生じ石炭
粒子の吸着水、吸着カスが取り除かれるために、油と石
炭のぬれ性が増大し。Therefore, the invention was made with the purpose of providing a method for pre-treating coal that would improve the stability of coal-curved slurry and make it possible to scale it, by adding a solvent to finely pulverized coal. 9 Heat treatment at the blade edge while stirring under normal pressure or pressurization, i+11, preferably 100 to 450
The present invention provides a method for pre-treating coal, which is characterized by heat-treating in a temperature range of °C for from zero hours to several hours. By mixing and preparing a homogeneous coal-cured slurry, the particle size of the applied coal is reduced by half compared to the case without the addition of a stabilizer or the conventional pretreatment. It is possible to prepare a thicker (but more stable) slurry than when no treatment is carried out, and it is possible to fully satisfy industrial requirements. This is due to the following reasons. Dehydration and degassing reactions occur, and adsorbed water and adsorbed residue on coal particles are removed, increasing the wettability of oil and coal.
また石炭の熱分解により表面上の疎4」]性を示す極性
基(−=oH+ −COOH,c:=o等)が著しく減
少するために疎油性が減少しさらに石突の表面上には浴
剤からまたは溶゛剤の熱分解により発生した親iiJ性
を示すメチル基管リアル+ル基が結合するために親i+
IJ性が著しく向上するためである。Furthermore, due to the thermal decomposition of coal, the polar groups (-=oH+ -COOH, c:=o, etc.) exhibiting phobic properties on the surface are significantly reduced, resulting in a decrease in oleophobicity, and furthermore, there is a Because the methyl group showing affinity iiJ generated from the solvent or by thermal decomposition of the solvent binds to the affinity i+
This is because the IJ properties are significantly improved.
また9石炭粒子の溶解しやすい部分が浴剤中にとけるた
めに1石炭粒子は微細化され沈降速度は減少し、そのう
え未溶解粒子の細孔内は溶解した石炭質あるいは浴剤で
みたさ5れるために時間の経過と共に石炭細孔内に油が
浸入し、粘度が急上昇する現象はおこらず、有効表面積
は微粉砕された原料石炭に比べ著しく減少しており。In addition, because the easily soluble parts of the coal particles dissolve in the bath agent, the coal particles become finer and the sedimentation rate decreases, and the pores of the undissolved particles are filled with dissolved coal or the bath agent. Therefore, oil does not seep into the coal pores over time and the viscosity rapidly increases, and the effective surface area is significantly reduced compared to finely pulverized raw material coal.
微イ11化されたために表面積が増大し、スラリーの不
安定化を防止するので2石炭−曲スラリーの安定性ケ非
常に向上させることが可能となる。Since the surface area is increased due to the finer grains and the destabilization of the slurry is prevented, the stability of the two-coal-bent slurry can be greatly improved.
さらに具体的に説明するとこの前処理により。To be more specific, this pretreatment.
石炭粒子が溶解微細化す・るので石炭−曲スラリー製造
のために20.0メツシユ以下が70%以上になるまで
微粉砕して使用していた石炭の粒径を150メツシユが
以下70%以上になるまで微粉砕して本前処理法を用い
れば、現在得られている以上の安定性が得られ、工業的
に要求されている安定なスラリーを調製することが可能
であると共に3石炭の粉砕の動力を著しく節約できるこ
とがわかった。Because coal particles dissolve and become finer, the particle size of the coal that was used for producing coal-curved slurry was pulverized until the particle size of 20.0 mesh or less becomes 70% or more. If this pretreatment method is used after pulverizing the coal until it becomes pulverized, it will be possible to obtain a stability higher than that currently available, and it will be possible to prepare a stable slurry that is required industrially. It was found that it was possible to significantly save power.
この前処理には、コールタール、アシトラ上3曲、クレ
オソート油、タールごッチ等の石炭系溶剤、減圧蒸留残
渣油、常圧蒸留残渣油、C重油、原油等の石油系溶剤ど
ちらて′も使用で゛き。For this pretreatment, coal-based solvents such as coal tar, Acitra, creosote oil, and targotchi, petroleum-based solvents such as vacuum distillation residue oil, atmospheric distillation residue oil, C heavy oil, and crude oil can be used. ′ can also be used.
石油系浴剤については大量かつ容易に確保て゛きろ利点
がある。Petroleum-based bath additives have the advantage of being easily available in large quantities.
しかし不前処理法は使用する溶剤、炭種により処理温度
の制限はあるが減圧蒸留残渣油や′フル圧蒸留残渣油を
使用する時は処理温度は石炭の流動点付近が好ましく、
処理時間は短時間が適当であるが、処理温度が必要以上
にIi”l < * 処理時間が長くなると石炭粒子の
m解により微細化された石炭粒子が溶剤の熱分解縮重合
により生成するメソカーボッマイクロビーズ(有機固形
分〕の生成により集められて凝集し、みかけ上の石炭粒
子径が大きくなり沈降しやすくなり溶解により微細化さ
れ沈降性を減少させる効果が少なくなるので、温度と処
理時間は炭種にあった条件を選ぷ必決があると考えられ
る。また不前処理法は不活性雰囲気下で゛常圧下で゛も
加圧下どちらでも可能であり、温度は100℃〜450
℃と温和な条件での加熱処理であるために操作上の問題
点はほとんどなく、 fA刀日削童の著しい減少と経済
にも有利な方法てあり工業上極めて有効な前処理法であ
ると考える。However, in the no-pretreatment method, the treatment temperature is limited depending on the solvent and type of coal used, but when using vacuum distillation residue oil or full pressure distillation residue oil, the treatment temperature is preferably near the pour point of the coal.
A short treatment time is appropriate, but if the treatment temperature is longer than necessary (Ii"l The formation of carbon microbeads (organic solids) collects and aggregates, and the apparent diameter of the coal particles increases, making them more likely to settle.As they become finer through dissolution and become less effective in reducing sedimentation, temperature and treatment It is considered that the time must be selected according to the type of coal.Also, the non-pretreatment method can be performed in an inert atmosphere under normal pressure or under pressure, and the temperature is 100℃ to 450℃.
Since the heat treatment is carried out under mild conditions at ℃, there are almost no operational problems, and it is an extremely effective pretreatment method for industrial use, as it significantly reduces fA shavings and is economically advantageous. think.
次に本発明を1実施例に基づいて説明する。Next, the present invention will be explained based on one embodiment.
リスカー炭を湿式三ルで200メツシユ以下が70%以
上になるように微粉砕した後に、中東糸
EC重油を300℃に加温して2き、その中に石炭/7
IiI比が2/1になるように石炭を加えて充分に攪拌
しながら2時間保持した。その後に70℃に冷却して石
灰/油化が1/1にな′るようにC重油を加え、さらに
イソシアネート変性ポリオ−ルを改良した安定化剤を0
.2 wt% 710えてからホ七三+4ノーにて50
0Or’、plm 30分間混合して石炭−i+4Jス
うリーを?A製した。そこでスラリーの安定性を検問す
るために棒貫入試験を行った。また未処理スラリーは、
70℃のC重油中に所矩童の石炭と安定化剤を7J[J
えて500 ’Or、p、 m60分間の攪拌混合した
後に、試験用サシづルとした。After pulverizing the Lisker coal in a wet mill so that 70% or less of 200 meshes or less is mixed, Middle East Yarn EC heavy oil is heated to 300°C, and coal/7 is mixed into it.
Coal was added so that the IiI ratio was 2/1, and the mixture was maintained for 2 hours with sufficient stirring. After that, it was cooled to 70℃, C heavy oil was added so that the lime/oil ratio was reduced to 1/1, and a stabilizer made from an improved isocyanate-modified polyol was added to it.
.. 2 wt% 710 and then 50 with Ho73 + 4 no
0Or', plm Mix for 30 minutes and add coal-i+4J suley? Made by A. Therefore, a rod penetration test was conducted to check the stability of the slurry. In addition, untreated slurry is
7J [J
After stirring and mixing at 500'Or, p, m for 60 minutes, a test sash was prepared.
(結果)
中東系C重油性状
粘 度 50C,l160℃)
25C,P(80℃)比 ル 0.92.
9/ii6[)℃) 0.9()6ソ/d+8[]
℃)リスj−炭
水 分 2.0 %
かさ比重 187
粒 度 200> 71係ス ラ
リ −i 状
俸貫入試験
捧 ル 童 209r
静置温度 7[]℃
容器長さ 180 mm
棒貫入試験結果は、0重41+で300℃処理したスラ
リーの棒貫入1時1ilijは添+111J剤皆が67
係に減少したにもかかわらず30日で26秒、未処理ス
うり−の場合は14日で25秒を比較すると。(Results) Middle Eastern C heavy oil properties viscosity 50C, 160℃)
25C, P (80℃) ratio 0.92.
9/ii6[)℃) 0.9()6so/d+8[]
℃)Lisu J-Carbohydrate Moisture 2.0% Bulk specific gravity 187 Particle size 200>71 ratio
The rod penetration test results show that the slurry treated at 300℃ at 0 weight 41+ has a rod penetration of 1 hour and 1ilij, and all of the additive + 111J agents. 67
Comparing this to 26 seconds in 30 days despite a significant decrease in time, and 25 seconds in 14 days for untreated suri.
前処1」により安定性が2倍に延びたことを示している
。It is shown that the stability was doubled by "Precondition 1".
以上の結果より石炭を凸温で溶剤処理したもののスラリ
ー安定性は著しく向上しており1本前処理法は非′古!
に有効な方法であると判明した。The above results show that the slurry stability is significantly improved when coal is treated with a solvent at a convex temperature, and the single-coat pretreatment method is not old!
It turned out to be an effective method.
代理人辰 間 跪″、; Il、□:1.。Agent Tatsuma kneels down; Il,□:1. .
手続補正書(方式プ
昭和59年6月60
特許庁長官 若 杉 和 夫 殿
事件の表示
昭和57年特許願第187292号
発明の名称
石炭の前処理方法
補正をする者
事件との関係 特許出願人
住 所 東京都千代田区丸の内−丁巳8番2号名称
電源開発株式会社
住 所 東京都千代田区大手町二丁目2番1号名 称
(009)石川島播磨重工業株式会社住 所 兵庫県
神戸市生田区東用崎町2丁已14番地名称(097)川
崎重工業株式会社
住 所 東京都千代田区丸の内−丁目5番1号名称(
510)株式会社日立製作所
代理人
住 所 東京都千代田区丸の内二丁目5番1号三菱重
工業株式会社(電212−3111 )昭和59年2月
28日
補正の対象
明細書の「発明の名称」の欄
補正の内容
発明の名称の「石炭の前処理法」を[石炭の前処理方θ
ニー1と補正する。Procedural Amendment (Format) June 60, 1980 Commissioner of the Patent Office Kazuo Wakasugi Case Description 1987 Patent Application No. 187292 Name of the invention Coal pre-treatment method Person who makes amendments Relationship to the case Patent applicant Address: 8-2, Chomi, Marunouchi, Chiyoda-ku, Tokyo Name
Electric Power Development Co., Ltd. Address 2-2-1 Otemachi, Chiyoda-ku, Tokyo Name (009) Ishikawajima Harima Heavy Industries Co., Ltd. Address 2-14 Higashiyosakicho, Ikuta-ku, Kobe, Hyogo Name (097) Kawasaki Heavy Industries Co., Ltd. Address: 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo Name (
510) Hitachi, Ltd. Agent address: Mitsubishi Heavy Industries, Ltd., 2-5-1 Marunouchi, Chiyoda-ku, Tokyo (telephone number: 212-3111) February 28, 1980: "Name of the invention" in the specification subject to amendment Contents of Column Amendment “Coal Pretreatment Method” in the title of the invention has been changed to [Coal Pretreatment Method θ
Correct knee 1.
Claims (1)
た状態で分散させ通常の液体燃料と同様に燃焼できるよ
うに加工する石炭−/11]スラリー製造に際し、微粉
砕された石炭に溶剤を添v目し加熱処理することを特徴
とする石炭の前処理法。Coal is processed so that finely ground coal particles are homogeneously and stably dispersed in heavy fuel oil so that it can be combusted in the same way as normal liquid fuel. 1. A pretreatment method for coal, which is characterized in that it is heat-treated with a heat treatment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18729282A JPS59140295A (en) | 1982-10-25 | 1982-10-25 | Pretreatment of coal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18729282A JPS59140295A (en) | 1982-10-25 | 1982-10-25 | Pretreatment of coal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59140295A true JPS59140295A (en) | 1984-08-11 |
Family
ID=16203442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18729282A Pending JPS59140295A (en) | 1982-10-25 | 1982-10-25 | Pretreatment of coal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59140295A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5033230A (en) * | 1985-11-20 | 1991-07-23 | Alberta Research Council | Method for passivating particulate coal |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5618635A (en) * | 1979-07-25 | 1981-02-21 | Tatsuta Electric Wire & Cable Co Ltd | Flame-retarding polyolefin resin composition |
-
1982
- 1982-10-25 JP JP18729282A patent/JPS59140295A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5618635A (en) * | 1979-07-25 | 1981-02-21 | Tatsuta Electric Wire & Cable Co Ltd | Flame-retarding polyolefin resin composition |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5033230A (en) * | 1985-11-20 | 1991-07-23 | Alberta Research Council | Method for passivating particulate coal |
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