JPS6319558B2 - - Google Patents
Info
- Publication number
- JPS6319558B2 JPS6319558B2 JP58064915A JP6491583A JPS6319558B2 JP S6319558 B2 JPS6319558 B2 JP S6319558B2 JP 58064915 A JP58064915 A JP 58064915A JP 6491583 A JP6491583 A JP 6491583A JP S6319558 B2 JPS6319558 B2 JP S6319558B2
- Authority
- JP
- Japan
- Prior art keywords
- compound
- coal powder
- dispersion stabilizer
- active hydrogen
- dispersion
- 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
- 239000006185 dispersion Substances 0.000 claims description 37
- 239000003245 coal Substances 0.000 claims description 29
- 239000000843 powder Substances 0.000 claims description 23
- 239000003381 stabilizer Substances 0.000 claims description 21
- -1 hydrogen compound Chemical class 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 6
- 150000002440 hydroxy compounds Chemical class 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims 1
- 235000011187 glycerol Nutrition 0.000 claims 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 description 12
- 239000002245 particle Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 6
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- FFJCNSLCJOQHKM-CLFAGFIQSA-N (z)-1-[(z)-octadec-9-enoxy]octadec-9-ene Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCCCCCCC\C=C/CCCCCCCC FFJCNSLCJOQHKM-CLFAGFIQSA-N 0.000 description 1
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000002483 hydrogen compounds Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000003476 subbituminous coal Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Liquid Carbonaceous Fuels (AREA)
Description
【発明の詳細な説明】
本発明は石炭微粉末の水系分散安定剤に関す
る。更に詳しくは、分散性が良好で且つ長時間保
存してもハードケーキを生成せず再分散性の良い
水系分散安定剤に関する。
一般に石炭粉末の水分散系は、石炭粉末の比重
が水より大きいので沈降するが、分散剤と呼ばれ
る界面活性剤を加えるとその作用で石炭微粉末は
水中に安定に顕濁した分散系となる。しかし、こ
の分散系も本来熱力学的に不安定なので長時間放
置すると石炭微粉末粒子は沈降する。一般に分散
性が良好なほど沈降した粒子は細密充填に近い沈
降物になるので、硬く再分散しにくい沈澱物、即
ちハードケーキをつくる。従つて、分散系を作つ
たのち直ぐ分散系を使用する場合には分散剤は非
常に優れた効果を有しているが、長時間保存した
場合にはハードケーキが生成され再分散性が悪い
という問題が生じる。従来の分散剤は石炭微粉末
の二次粒子を一次粒子にほぐす作用と、ほぐれた
粒子が再び凝集するのを防ぐ作用が強いが、沈降
後にハードケーキを生成しやすく長時間保存する
場合には十分満足なものとはいえず改善が望まれ
ていた。
本発明者らは、石炭微粉末に対する分散効果を
有し且つ沈澱物がハードケーキを生成しない作用
を有する分散安定剤を見い出すべく鋭意研究した
結果、上記の両作用を有する分散安定剤を見い出
し本発明を完成した。
即ち、本発明は次の一般式(1)
Ａ〔（C3H6O）y（C2H4O）zＨ〕x (1)
（式(1)中、ｘは２以上の整数であり、ｙ，ｚは
１以上の整数であり、Ａはｘ価の活性水素化合物
から活性水素を除いた残基である。）
で表わされ、ポリオキシプロピレン鎖とポリオ
キシエチレン鎖の重量比が50／50〜５／95であ
り、かつ分子量が3000〜100000である化合物から
なることを特徴とする石炭微粉末の水系分散安定
剤を提供するものである。
本発明の水系分散安定剤を用いることにより、
長期保存後にもハードケーキを生成しない石炭微
粉末の分散系を得ることが可能となつた。
本発明の分散安定剤は活性水素を有する化合物
に通常の方法によりプロピレンオキサイドとエチ
レンオキサイドを付加することにより容易に製造
することができる。つまり、出発物質である活性
水素を有する化合物を触媒量のアルカリ又は酸の
存在下に、温度80〜200℃、圧力１〜5atmでプロ
ピレンオキサイドを付加させたのち、同条件でエ
チレンオキサイドを付加させることにより目的物
が得られる。そして、出発物質である活性水素化
合物のモル数及びプロピレンオキサイド、エチレ
ンオキサイドのモル数を調節することにより、容
易に希望する構造式を有する化合物を得ることが
出来るのである。
本発明に用いることの出来る活性水素化合物は
ヒドロキシル基、アミノ基、メルカプト基等を有
するヒドロキシ化合物、アミノ化合物、メルカプ
ト化合物等であり、特に好ましくは活性水素を３
個以上有するアミノ化合物及びヒドロキシ化合物
であつて、そのようなものとしてエチレンジアミ
ン、ジエチレントリアミン、トリエチレンテトラ
ミン、テトラエチレンペンタミン、グリセリン、
トリメチロールプロパン、ペンタエリスリトー
ル、ソルビトール、シユークローズ、ヒドロキシ
エチルセルローズを挙げることができる。
式(1)中のポリオキシプロピレン鎖（PO）とポ
リオキシエチレン鎖（EO）の割合は、重量比で
PO／EO＝50／50〜５／95、好ましくは40／60〜
10／90である。この比が50／50より大きくなると
水への溶解性が低下し性能も劣り、この比が５／
95より小さくなつても性能が低下することから、
オキシプロピレン鎖導入の効果が重要と考えられ
る。
式(1)で表わされる本発明の化合物の分子量は
3000〜100000、好ましくは7500〜50000である。
分子量が3000よりも小さい場合石炭粉末の分散効
果はすぐれているが、ハードケーキ生成防止効果
がなくなる。他方、分子量が100000より大きくな
ると石炭粉末に対する凝集効果が顕著となり本発
明の目的とする効果が得られない。
本発明の分散安定剤の使用にあたつては、分散
剤を全系（石炭粉末＋水）に対し0.01〜7.5重量
％の割合で使用すればよく、好ましくは0.05〜
2.5重量％の割合で添加するのが望ましい。添加
量が少なければ効果が小さく、多すぎても効果が
一定で経済的に不利である。
本発明に使用する石炭は無煙炭、瀝青炭、亜瀝
青炭、褐炭等の種々の炭種のものが用いられるが
これを微粉砕して用いる。この石炭粉末の粒度は
ボイラーへの直接燃焼の可能な粒度であればよい
が、現在この様な目的で火力発電所にて使用され
ている一般的な粒度は200メツシユパス率が70〜
90％の粒度のものである。
石炭粉末、分散安定剤、水の混合順としては、
何れでもよいが、分散安定剤を水に溶解又は分散
させて、それに石炭を加え適当な混合装置又は粉
砕装置により調製すればよい。
また本発明の分散安定剤はいずれの粒子径の石
炭粉末に対しても効果を示すが、特に0.1〜100ミ
クロンの粒子径の粉末に対して良好な効果があ
る。
分散系における石炭粉末の濃度は分散系が生成
されるいずれの濃度でもよく、一般に0.5〜70重
量％が殆どである。
本発明の分散安定剤の使用に際して、アトライ
ター、サンドミル、三本ロール、ボールミルなど
のいずれの分散機器を用いてもよく、また、これ
らの機器で石炭粉末又は／および石炭粉末の二次
粒子を粉砕する工程の前に本発明の分散安定剤を
加えても良いし、粉砕した後に加えても良い。
本発明の分散安定剤は単独で用いてもよく、他
の水系分散剤たとえばアニオン性及びノニオン性
界面活性剤であるアクリル酸ナトリウムのホモポ
リマー、オレフイン―マレイン酸ナトリウムのコ
ポリマー、縮合リン酸塩、ポリオキシエチレンオ
レイルエーテル、ポリオキシエチレンソルビタン
モノオレート等と併用するとより優れた効果を示
す。
以下に本発明を実施例により具体的に示すが、
本発明はこれらの実施施例に限定されるものでは
ない。
実施例 １
石炭として中国炭＊）を用い、各種分散安定剤
を用いて下記の試験を行い表１の結果を得た。
所定量の各種分散安定剤を含む水溶液20ml中に
石炭粉末25ｇ加え、軽くスパーテルで撹拌した
後、さらに分散安定剤水溶液を適量加え石炭分10
重量％の分散液を得る。この分散液をサンドミル
（五十嵐製作所製）で５時間粉砕した後、50mlの
目盛付乳化試験管に入れ、25℃の恒温室に静置し
24時間後の分散状態、20日後及び90日後の沈澱物
の硬さと再分散性の容易さを評価する。尚、分散
剤は全系に対し１重量％であつた。
＊ 中国炭
200メツシユ篩通過品
分析値
発熱量 7450Kcal／Kg （JIS Ｍ 8814）
灰 分 8.9％ （JIS Ｍ 8812）
水 分 7.0％ （JIS Ｍ 8811）
固定炭素 60.0％ （JIS Ｍ 8812）
分散系の分散状態及び分散安定性は次のように
して評価した。その結果は表１に示す。
24時間後の分散系では、まだハードケーキが生
成されていないので、乳化試験管中で固体微粒子
が沈降せずに分散しているか否かにより評価し
た。
〇：沈降していない。
△：僅かに沈降している。
×：50％程度沈降している。
××：完全に沈降している。
20日および90日静置後の分散安定性の評価は乳
化試験管の底に沈降した沈澱物の硬さと再分散性
の容易さを安性的に行つた。
〇：水を撹拌すると分散する。
△：柔かくスパーテルで容易に崩れる。
×：硬い。
××：非常に硬い。
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aqueous dispersion stabilizer for fine coal powder. More specifically, the present invention relates to an aqueous dispersion stabilizer that has good dispersibility, does not form a hard cake even when stored for a long time, and has good redispersibility. Generally, a dispersion of coal powder in water will settle because the specific gravity of the coal powder is greater than that of water, but when a surfactant called a dispersant is added, the fine coal powder becomes a stable dispersed system in water. . However, this dispersion system is also inherently thermodynamically unstable, so if left for a long time, the fine coal particles will settle. In general, the better the dispersibility, the more closely packed the sedimented particles are, resulting in a hard cake that is hard to redisperse. Therefore, if the dispersion system is used immediately after making it, the dispersant has a very good effect, but if it is stored for a long time, a hard cake is formed and the redispersibility is poor. A problem arises. Conventional dispersants have a strong effect of loosening the secondary particles of fine coal powder into primary particles and preventing the loosened particles from agglomerating again. The results were not completely satisfactory and improvements were desired. The present inventors conducted extensive research to find a dispersion stabilizer that has a dispersion effect on fine coal powder and prevents the precipitation from forming a hard cake, and as a result, they discovered a dispersion stabilizer that has both of the above-mentioned effects. Completed the invention. That is, the present invention is based on the following general formula (1) A [(C 3 H 6 O) y (C 2 H 4 O) z H] x (1) (in formula (1), x is an integer of 2 or more (y and z are integers of 1 or more, and A is a residue obtained by removing active hydrogen from an x-valent active hydrogen compound.), and the weight ratio of polyoxypropylene chains to polyoxyethylene chains The present invention provides an aqueous dispersion stabilizer for fine coal powder, characterized by comprising a compound having a molecular weight of 50/50 to 5/95 and a molecular weight of 3,000 to 100,000. By using the aqueous dispersion stabilizer of the present invention,
It has become possible to obtain a dispersion system of fine coal powder that does not form a hard cake even after long-term storage. The dispersion stabilizer of the present invention can be easily produced by adding propylene oxide and ethylene oxide to a compound having active hydrogen by a conventional method. That is, propylene oxide is added to the starting material, a compound having active hydrogen, in the presence of a catalytic amount of alkali or acid at a temperature of 80 to 200°C and a pressure of 1 to 5 atm, and then ethylene oxide is added under the same conditions. By doing this, the desired object can be obtained. By adjusting the number of moles of the active hydrogen compound and the number of moles of propylene oxide and ethylene oxide as starting materials, it is possible to easily obtain a compound having a desired structural formula. Active hydrogen compounds that can be used in the present invention include hydroxy compounds, amino compounds, and mercapto compounds having hydroxyl groups, amino groups, mercapto groups, etc. Particularly preferably, active hydrogen
Amino compounds and hydroxy compounds having more than
Mention may be made of trimethylolpropane, pentaerythritol, sorbitol, seurose, hydroxyethylcellulose. The ratio of polyoxypropylene chains (PO) and polyoxyethylene chains (EO) in formula (1) is expressed as a weight ratio.
PO/EO=50/50~5/95, preferably 40/60~
It's 10/90. If this ratio is greater than 50/50, the solubility in water will decrease and the performance will be poor;
Since the performance decreases even if it becomes smaller than 95,
The effect of introducing oxypropylene chains is considered to be important. The molecular weight of the compound of the present invention represented by formula (1) is
3000-100000, preferably 7500-50000.
When the molecular weight is less than 3000, the dispersion effect of coal powder is excellent, but the effect of preventing hard cake formation is lost. On the other hand, if the molecular weight is greater than 100,000, the agglomeration effect on coal powder becomes significant and the desired effect of the present invention cannot be obtained. When using the dispersion stabilizer of the present invention, the dispersant may be used in a proportion of 0.01 to 7.5% by weight, preferably 0.05 to 7.5% by weight based on the total system (coal powder + water).
It is desirable to add it in a proportion of 2.5% by weight. If the amount added is small, the effect will be small, and if it is added too much, the effect will be constant, which is economically disadvantageous. The coal used in the present invention may be of various types such as anthracite, bituminous coal, sub-bituminous coal, lignite, etc., and is pulverized. The particle size of this coal powder may be any particle size that allows direct combustion in the boiler, but the typical particle size currently used in thermal power plants for this purpose is 200 mesh with a pass rate of 70 to 70.
90% particle size. The mixing order of coal powder, dispersion stabilizer, and water is as follows:
Any method may be used, but it may be prepared by dissolving or dispersing the dispersion stabilizer in water, adding coal thereto, and using a suitable mixing device or crushing device. Further, the dispersion stabilizer of the present invention is effective for coal powder of any particle size, but is particularly effective for powder with a particle size of 0.1 to 100 microns. The concentration of coal powder in the dispersion may be any concentration at which the dispersion is produced, and generally ranges from 0.5 to 70% by weight. When using the dispersion stabilizer of the present invention, any dispersion equipment such as an attritor, sand mill, three-roll mill, or ball mill may be used, and coal powder or/and secondary particles of coal powder may be mixed with these equipment. The dispersion stabilizer of the present invention may be added before the pulverization step, or may be added after the pulverization step. The dispersion stabilizer of the present invention may be used alone, and other aqueous dispersants such as anionic and nonionic surfactants such as homopolymers of sodium acrylate, copolymers of olefin-sodium maleate, condensed phosphates, It exhibits better effects when used in combination with polyoxyethylene oleyl ether, polyoxyethylene sorbitan monooleate, etc. The present invention will be specifically illustrated by examples below.
The invention is not limited to these examples. Example 1 The following tests were conducted using Chinese coal*) as the coal and various dispersion stabilizers, and the results shown in Table 1 were obtained. Add 25 g of coal powder to 20 ml of an aqueous solution containing a predetermined amount of various dispersion stabilizers, stir lightly with a spatula, and then add an appropriate amount of the dispersion stabilizer aqueous solution to give a coal content of 10
% dispersion by weight is obtained. After grinding this dispersion liquid for 5 hours with a sand mill (manufactured by Igarashi Seisakusho), it was placed in a 50 ml graduated emulsification test tube and left in a constant temperature room at 25°C.
The dispersion state after 24 hours, the hardness of the precipitate after 20 days and 90 days, and the ease of redispersibility are evaluated. Incidentally, the amount of the dispersant was 1% by weight based on the total system. *Chinese coal passed through a 200 mesh sieve Analysis calorific value 7450Kcal/Kg (JIS M 8814) Ash 8.9% (JIS M 8812) Moisture 7.0% (JIS M 8811) Fixed carbon 60.0% (JIS M 8812) Dispersed system The dispersion state and dispersion stability were evaluated as follows. The results are shown in Table 1. Since a hard cake had not yet been formed in the dispersion system after 24 hours, evaluation was made based on whether the solid fine particles were dispersed without settling in an emulsification test tube. ○: No sedimentation. △: Slight sedimentation. ×: About 50% sedimentation. XX: Completely settled. Dispersion stability was evaluated after standing for 20 and 90 days by evaluating the hardness of the precipitate at the bottom of the emulsification test tube and the ease of redispersibility. ○: Disperses when water is stirred. △: Soft and easily crumbles with a spatula. ×: Hard. XX: Very hard. 【table】
Claims (1)
１以上の整数であり、Ａはｘ価の活性水素化合物
から活性水素を除いた残基である。）で表わされ、
ポリオキシプロピレン鎖とポリオキシエチレン鎖
の重量比が50／50〜５／95であり、かつ分子量が
3000〜100000である化合物からなることを特徴と
する石炭微粉末の水系分散安定剤。 ２ 活性水素化合物がアミノ化合物又はヒドロキ
シ化合物である特許請求の範囲第１項記載の石炭
微粉末の水系分散安定剤。 ３ 活性水素化合物が活性水素を３個以上有する
アミノ化合物又はヒドロキシ化合物である特許請
求の範囲第２項記載の石炭微粉末の水系分散安定
剤。 ４ 活性水素化合物がエチレンジアミン、ジエチ
レントリアミン、トリエチレンテトラミン、テト
ラエチレンペンタミン、グリセリン、トリメチロ
ールプロパン、ペンタエリスリトール、ソルビト
ール、シユークローズまたはヒドロキシエチルセ
ルローズである特許請求の範囲第３項記載の石炭
微粉末の水系分散安定剤。[Claims] 1 The following general formula (1) A [(C 3 H 6 O) y (C 2 H 4 O) z H] x (1) (In formula (1), x is 2 or more is an integer, y and z are integers of 1 or more, and A is a residue obtained by removing active hydrogen from an x-valent active hydrogen compound.
The weight ratio of polyoxypropylene chains to polyoxyethylene chains is 50/50 to 5/95, and the molecular weight is
An aqueous dispersion stabilizer for fine coal powder, characterized by comprising a compound having a molecular weight of 3,000 to 100,000. 2. The aqueous dispersion stabilizer for fine coal powder according to claim 1, wherein the active hydrogen compound is an amino compound or a hydroxy compound. 3. The aqueous dispersion stabilizer for fine coal powder according to claim 2, wherein the active hydrogen compound is an amino compound or a hydroxy compound having three or more active hydrogens. 4. Fine coal powder according to claim 3, wherein the active hydrogen compound is ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, glycerin, trimethylolpropane, pentaerythritol, sorbitol, xyucrose, or hydroxyethylcellulose. Aqueous dispersion stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064915A JPS58223430A (en) | 1983-04-13 | 1983-04-13 | Aqueous dispersion stabilizer of fine coal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064915A JPS58223430A (en) | 1983-04-13 | 1983-04-13 | Aqueous dispersion stabilizer of fine coal powder |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13818979A Division JPS5662538A (en) | 1979-10-25 | 1979-10-25 | Water-base dispersion stabilizer of fine powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223430A JPS58223430A (en) | 1983-12-26 |
| JPS6319558B2 true JPS6319558B2 (en) | 1988-04-22 |
Family
ID=13271816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58064915A Granted JPS58223430A (en) | 1983-04-13 | 1983-04-13 | Aqueous dispersion stabilizer of fine coal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8931331B2 (en) | 2011-05-18 | 2015-01-13 | 3M Innovative Properties Company | Systems and methods for volumetric metering on a sample processing device |
| US9067205B2 (en) | 2011-05-18 | 2015-06-30 | 3M Innovative Properties Company | Systems and methods for valving on a sample processing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5234469A (en) * | 1991-06-28 | 1993-08-10 | Texaco Inc. | Process for disposing of sewage sludge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2674619A (en) * | 1953-10-19 | 1954-04-06 | Wyandotte Chemicals Corp | Polyoxyalkylene compounds |
| JPS51100125A (en) * | 1975-01-24 | 1976-09-03 | Basf Ag | BUNSANSENRYONOHIIONSEISUISEICHOSEIBUTSU |
| JPS5433803A (en) * | 1977-08-22 | 1979-03-12 | Hitachi Zosen Corp | Pulverized ore slurry composition |
| JPS5452105A (en) * | 1977-10-03 | 1979-04-24 | Dai Ichi Kogyo Seiyaku Co Ltd | Additive for pulverized coal-oil mixtures |
| JPS5545600A (en) * | 1978-09-27 | 1980-03-31 | Korf Engineering Gmbh | Continuous casting method of metal strand and continuous casting machine |
-
1983
- 1983-04-13 JP JP58064915A patent/JPS58223430A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2674619A (en) * | 1953-10-19 | 1954-04-06 | Wyandotte Chemicals Corp | Polyoxyalkylene compounds |
| JPS51100125A (en) * | 1975-01-24 | 1976-09-03 | Basf Ag | BUNSANSENRYONOHIIONSEISUISEICHOSEIBUTSU |
| JPS5433803A (en) * | 1977-08-22 | 1979-03-12 | Hitachi Zosen Corp | Pulverized ore slurry composition |
| JPS5452105A (en) * | 1977-10-03 | 1979-04-24 | Dai Ichi Kogyo Seiyaku Co Ltd | Additive for pulverized coal-oil mixtures |
| JPS5545600A (en) * | 1978-09-27 | 1980-03-31 | Korf Engineering Gmbh | Continuous casting method of metal strand and continuous casting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8931331B2 (en) | 2011-05-18 | 2015-01-13 | 3M Innovative Properties Company | Systems and methods for volumetric metering on a sample processing device |
| US9067205B2 (en) | 2011-05-18 | 2015-06-30 | 3M Innovative Properties Company | Systems and methods for valving on a sample processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223430A (en) | 1983-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI76589C (en) | Solid fuel water slurry and process for making it | |
| US4302212A (en) | Dispersing agents for an aqueous slurry of coal powder | |
| JPH0237391B2 (en) | ||
| JPS6320567B2 (en) | ||
| JPS6319558B2 (en) | ||
| DK158793B (en) | Pumpable aqueous suspension of a solid fuel, and a process for producing it | |
| JPH0139479B2 (en) | ||
| JPH0139718B2 (en) | ||
| KR0138512B1 (en) | High concentration coal aqueous slurry and process for producing same | |
| JPS5991195A (en) | Dispersion stabilizer for aqueous slurry of petroleum coke | |
| WO1993021108A1 (en) | Method for aqueous processing of aluminum nitride and compositions therefrom | |
| JP2787692B2 (en) | How to burn solid fuel | |
| JPS6251510A (en) | Coal-water mixture | |
| JPS5918791A (en) | Manufacture of slurry of granulate of pulverized coal | |
| JPS62161894A (en) | Carbonaceous solid-water slurry composition | |
| JPS60166391A (en) | Production of pitch-water slurry | |
| JPS59500818A (en) | Solid fuel aqueous slurry and method for producing the same | |
| JPH0475277B2 (en) | ||
| JPH07278578A (en) | Water-coal mixed fuel and its production | |
| JPS59135286A (en) | Preparation of highly concentrated aqueous slurry of coal | |
| JPS63165489A (en) | Stable solid fuel water slurry | |
| JPS6217058A (en) | Foaming agent and manufacture | |
| JPS60166390A (en) | Pitch-water slurry composition | |
| JPS6015495A (en) | Dispersion stabilizer for aqueous slurry of dust coal | |
| JPS59145293A (en) | Dispersion stabilizer for aqueous slurry of petroleum coke |