JPS63165489A - Stable solid fuel water slurry - Google Patents
Stable solid fuel water slurryInfo
- Publication number
- JPS63165489A JPS63165489A JP61313429A JP31342986A JPS63165489A JP S63165489 A JPS63165489 A JP S63165489A JP 61313429 A JP61313429 A JP 61313429A JP 31342986 A JP31342986 A JP 31342986A JP S63165489 A JPS63165489 A JP S63165489A
- Authority
- JP
- Japan
- Prior art keywords
- solid fuel
- water slurry
- weight
- water
- stabilizer
- 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.)
- Granted
Links
- 239000004449 solid propellant Substances 0.000 title claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000002002 slurry Substances 0.000 title claims abstract description 61
- 239000000126 substance Substances 0.000 claims abstract description 18
- 239000003381 stabilizer Substances 0.000 claims abstract description 17
- 229920001206 natural gum Polymers 0.000 claims abstract description 8
- 239000002006 petroleum coke Substances 0.000 claims abstract description 7
- 239000011335 coal coke Substances 0.000 claims abstract description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 4
- 229960000892 attapulgite Drugs 0.000 claims abstract description 4
- 239000000440 bentonite Substances 0.000 claims abstract description 4
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 4
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 4
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 4
- 239000004113 Sepiolite Substances 0.000 claims abstract description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 3
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 25
- 239000000446 fuel Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- CWBIFDGMOSWLRQ-UHFFFAOYSA-N trimagnesium;hydroxy(trioxido)silane;hydrate Chemical compound O.[Mg+2].[Mg+2].[Mg+2].O[Si]([O-])([O-])[O-].O[Si]([O-])([O-])[O-] CWBIFDGMOSWLRQ-UHFFFAOYSA-N 0.000 claims description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 2
- 229920002907 Guar gum Polymers 0.000 claims description 2
- 229920000569 Gum karaya Polymers 0.000 claims description 2
- 229920000161 Locust bean gum Polymers 0.000 claims description 2
- 241000934878 Sterculia Species 0.000 claims description 2
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- 235000010494 karaya gum Nutrition 0.000 claims description 2
- 239000000231 karaya gum Substances 0.000 claims description 2
- 229940039371 karaya gum Drugs 0.000 claims description 2
- 235000010420 locust bean gum Nutrition 0.000 claims description 2
- 239000000711 locust bean gum Substances 0.000 claims description 2
- 235000010413 sodium alginate Nutrition 0.000 claims description 2
- 239000000661 sodium alginate Substances 0.000 claims description 2
- 229940005550 sodium alginate Drugs 0.000 claims description 2
- 229920003169 water-soluble polymer Polymers 0.000 claims description 2
- 235000010493 xanthan gum Nutrition 0.000 claims description 2
- 239000000230 xanthan gum Substances 0.000 claims description 2
- 229920001285 xanthan gum Polymers 0.000 claims description 2
- 229940082509 xanthan gum Drugs 0.000 claims description 2
- 235000012216 bentonite Nutrition 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 6
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 239000010425 asbestos Substances 0.000 abstract 1
- 229920006184 cellulose methylcellulose Polymers 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000013049 sediment Substances 0.000 description 8
- 238000013112 stability test Methods 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 6
- 230000001186 cumulative effect Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- -1 polyoxyethylene Polymers 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005056 compaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 150000003871 sulfonates Chemical class 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- YWPOLRBWRRKLMW-UHFFFAOYSA-M sodium;naphthalene-2-sulfonate Chemical compound [Na+].C1=CC=CC2=CC(S(=O)(=O)[O-])=CC=C21 YWPOLRBWRRKLMW-UHFFFAOYSA-M 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229920003170 water-soluble synthetic polymer Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、安定な固体燃料・水スラリーに関し、更に詳
しくは、高濃度かつ低粘度であって、輸送、貯蔵、取扱
などが容易であり、長期間の貯蔵中および輸送中に固体
燃料粒子が沈降したり、圧密化することのない安定性の
優れた固体燃料・水スラリーに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stable solid fuel/water slurry, and more specifically, to a stable solid fuel/water slurry, which has high concentration and low viscosity, and is easy to transport, store, and handle. , relates to a solid fuel/water slurry with excellent stability in which solid fuel particles do not settle or become compacted during long-term storage and transportation.
［従来技術及びその問題点］
近年、エネルギー源として、石炭、石油コークスなどの
固体燃料が見直されている。しかしながら、固体燃料は
５石油のような液体燃料と比較して、輸送や貯蔵を円滑
に行なうことが困難であり、また取り扱いに際しても作
業効率が悪いという欠点がある。[Prior art and its problems] In recent years, solid fuels such as coal and petroleum coke have been reconsidered as energy sources. However, compared to liquid fuels such as petroleum, solid fuels have the drawbacks of being difficult to transport and store smoothly, and of being handled inefficiently.
これらの欠点を改善するために、固体燃料を微粉状にし
て水中に分散させた固体燃料・水スラリーの開発が進め
られている。しかし、固体燃料・水スラリーにおいて、
固体燃料の濃度を上げると、固体燃料・水スラリーの粘
度が著しく高くなり、流動性が失われ、取扱いや、管路
輸送などが困難になる。また、固体燃料・水スラリーの
粘度を下げるために、固体燃料の濃度を下げると、輸送
効率が低下し、燃料やガス化原料として使用するために
は、事前に脱水処理を必要とするなどの難点がある。In order to improve these drawbacks, progress is being made in developing a solid fuel/water slurry in which solid fuel is pulverized and dispersed in water. However, in solid fuel/water slurry,
When the concentration of solid fuel is increased, the viscosity of the solid fuel/water slurry increases significantly, resulting in loss of fluidity and difficulty in handling, pipe transportation, etc. In addition, if the concentration of solid fuel is lowered to lower the viscosity of the solid fuel/water slurry, transportation efficiency will decrease, and dehydration treatment will be required in advance before it can be used as fuel or gasification raw material. There are some difficulties.
これらの難点を解決するために、固体燃料・水スラリー
に分散剤を添加したり、固体燃料粒子の粒度分布を調整
することが種々試みられている。In order to solve these difficulties, various attempts have been made to add a dispersant to the solid fuel/water slurry or to adjust the particle size distribution of the solid fuel particles.
しかしながら、このような方法により、固体燃料を高濃
度で含有する固体燃料・水スラリーの粘度を低下させた
としても、固体燃料・水スラリーを長期間貯蔵したり、
タンクローリ−あるいはタンカーなどで輸送する場合に
、固体燃料粒子が沈降し、さらに沈降物の圧密化による
脱水現象により強固な固体沈降層が形成されることが多
い。このような固体沈降層を再び分散させて固体燃料・
水スラリーにして使用することは極めて困難であるので
、高濃度かつ低粘度の固体燃料・水スラリーの安定性を
向上させることは、固体燃料・水スラリーの実用上極め
て重要である。However, even if such a method reduces the viscosity of a solid fuel/water slurry containing a high concentration of solid fuel, it is difficult to store the solid fuel/water slurry for a long period of time,
When transported by tank lorry or tanker, solid fuel particles often settle and a strong solid sedimentary layer is often formed due to dehydration caused by compaction of the sediment. This solid sedimentation layer is redispersed and solid fuel/
Since it is extremely difficult to use it as a water slurry, improving the stability of a solid fuel/water slurry with high concentration and low viscosity is extremely important for the practical use of solid fuel/water slurries.
従来においても、固体燃料・水スラリーの安定性を向上
させるために種々の安定剤を添加することが提案されて
いるが、いずれも未だ満足てきるものとはいえない。In the past, it has been proposed to add various stabilizers to improve the stability of solid fuel/water slurries, but none of them have been satisfactory.
［発明の目的］
本発明は、固体燃料粒子を高濃度で含有しながら、低粘
度であり、しかも長期間の貯蔵中および輸送中に固体燃
料が沈降したり圧密化することのない安定性の極めて優
れた固体燃料・水スラリーを提供することを目的とする
。[Objective of the Invention] The present invention provides a solid fuel that contains a high concentration of solid fuel particles, has a low viscosity, and is stable so that the solid fuel does not settle or become compacted during long-term storage and transportation. The purpose is to provide extremely superior solid fuel/water slurry.
［発明の構成］
本発明は１石炭及び／又は石油コークスからなる固体燃
料粒子５０〜８０重量部を含有する固体燃料・水スラリ
ー１００重量部に、天然ガム、天然ガムの変成品、ポリ
ビニルアルコール、ポリアクリルアミド、カルボキシメ
チルセルロースおよびヒドロキシエチルセルロースから
選ばれた少なくとも一種の水溶性高分子物質１〜２０重
量％と、ベントナイト、アタパルジャイト、セピオライ
トおよびクリソタイル系アスベストからなる群から選ば
れた少なくとも一種の微粒子状無機物質８０〜９９重量
％とからなる混合物である安定化剤が０．０１〜０．５
重量部含まれていることを特徴とする安定な固体燃料・
水スラリーにある。[Structure of the Invention] The present invention comprises adding natural gum, a modified product of natural gum, polyvinyl alcohol, 1 to 20% by weight of at least one water-soluble polymeric substance selected from polyacrylamide, carboxymethylcellulose, and hydroxyethylcellulose, and at least one particulate inorganic substance selected from the group consisting of bentonite, attapulgite, sepiolite, and chrysotile asbestos. 80 to 99% by weight of the stabilizer, which is a mixture of 0.01 to 0.5
A stable solid fuel characterized by containing parts by weight of
in water slurry.
本発明における固体燃料は、石炭及び／又は石油コーク
スである０石炭及び石油コークスとしては、特に限定さ
れず１通常燃料として一般に使用されているものを使用
することができる０石炭として、灰分が約６％以下であ
るようなものが特に好ましい、脱灰処理された石炭１例
えば、灰分約ｌＯ％含有する石炭を例えば重液選炭法な
どそれ自体公知の方法で脱灰処理した灰分約６重量％以
下の石炭も好適に使用することができる。また、石油コ
ークスとしては、一般に石油精製工程から副生ずる石油
コークスが利用され、通常灰分を０．１〜ｌｆｉ量％含
有する。The solid fuel in the present invention is coal and/or petroleum coke, and the coal and petroleum coke are not particularly limited. Deashed coal 1, which is particularly preferably 6% or less, has an ash content of about 6% by weight, obtained by deashing coal containing about 10% ash by a method known per se, such as a heavy liquid coal washing method. The following coals can also be suitably used. Moreover, as petroleum coke, petroleum coke which is generally a by-product from petroleum refining processes is used, and usually contains 0.1 to lfi % of ash.
本発明の固定燃料・水スラリー中の固体燃料の含有量は
、５０〜８０重量％、好ましくは６５〜７５重量％であ
る。固体燃料としては、その粒子の幾何平均径が、７４
ＩＬｍ以下、特に２０〜５３ＩＬｍであり、その粒子の
粒度分布が、対数正規分布における幾何標準偏差δｇの
値が６〜１２の範囲内にあるような固体燃料が好ましい
。The content of solid fuel in the fixed fuel/water slurry of the present invention is 50 to 80% by weight, preferably 65 to 75% by weight. As a solid fuel, the geometric mean diameter of the particles is 74
A solid fuel having an ILm or less, particularly 20 to 53 ILm, and whose particle size distribution has a geometric standard deviation δg in a lognormal distribution within a range of 6 to 12 is preferable.
上記「幾何平均径」及び「幾何標準偏差」の各用語は、
粉末の粒度及びその分布を規定するために一般に使用さ
れている用語てあり、対数正規分布での粒径と積算通過
重量百分率との関係から。The terms “geometric mean diameter” and “geometric standard deviation” above are
A term commonly used to define the particle size of powders and their distribution, based on the relationship between particle size and cumulative passing weight percentage in a lognormal distribution.
次のように定義される。It is defined as follows.
幾何平均径（Ｄｐ５Ｇ）：
積算通過重量百分率が５０％に相ちする粒径幾何標準偏
差（δｇ）：
幾何平均径と積算通過重量百分率が１５．８７％に相当
する粒径との比（幾何平均径／積算通過重量１５．８７
％に相当する粒径）８ｇ１と、積算通過重量百分率が８
４．１３％に相当する粒径と幾何平均径との比（積算通
過重量８４．１３％に相当する粒径／幾何平均径）８ｇ
２の算術平均
［（δμｍ＋δｇ ２ ） ／ ２ ］本発明にて用い
る安定化剤は、グアーガム、ザンサンガム、ローカスト
ビーンガム、カラヤガムおよびアルギン酸ナトリウムな
どの天然ガム；これらの天然ガムのアセチル化物、また
はアルキル化物のような変成品：ポリビニルアルコール
、ポリアクリルアミドなどの水溶性合成高分子、カルボ
キシメチルセルロース、ヒドロキシエチルセルロースな
どの水溶性セルロース誘導体から選ばれた少なくとも一
種の水溶性高分子物質１〜２０重量％、好ましくは２〜
ｌＯ重量％と、ベントナイト、アタパルジャイト、セと
オライドおよびクリソタイル系アスベストからなる群か
ら選ばれた少なくとも一種の無機物Ｉｆ！Ｊ８０〜９９
重量％、好ましくは９０〜９８重量％とからなる混合物
である。該無機物質の割合が上記範囲よりも小さ゛いと
低粘度における安定性が悪くなる傾向がある。Geometric mean diameter (Dp5G): Particle diameter at which the cumulative passing weight percentage corresponds to 50% Geometric standard deviation (δg): Ratio between the geometric mean diameter and the particle diameter at which the cumulative passing weight percentage corresponds to 15.87% (geometric Average diameter/cumulative passing weight 15.87
% particle size) 8g1, and the cumulative passing weight percentage is 8g1.
Ratio of particle size corresponding to 4.13% and geometric mean diameter (particle size corresponding to 84.13% of cumulative passing weight/geometric mean diameter) 8 g
The arithmetic mean of 2 [(δμm+δg 2 ) / 2 ] The stabilizer used in the present invention is natural gum such as guar gum, xanthan gum, locust bean gum, karaya gum, and sodium alginate; acetylated or alkylated products of these natural gums. Modified products such as: 1 to 20% by weight, preferably at least one water-soluble polymer substance selected from water-soluble synthetic polymers such as polyvinyl alcohol and polyacrylamide, and water-soluble cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose. 2～
% by weight of lO, and at least one inorganic substance If! selected from the group consisting of bentonite, attapulgite, setriolide, and chrysotile asbestos. J80-99
% by weight, preferably from 90 to 98% by weight. If the proportion of the inorganic substance is smaller than the above range, stability at low viscosity tends to deteriorate.
上記安定化剤の添加量は、固体燃料・水スラリー１００
重量部に対して０．０１〜０．５重量部、好ましくは０
．０２〜０．２重量部の範囲内の量である。安定化剤の
添加量が上記範囲よりも少ないと、固定燃料・水スラリ
ーの安定性が不充分であり、上記範囲よりも多いと固体
燃料・水スラリーの粘度が高くなり流動性が低下するの
で、流動性を維持するために固体燃料の含有量を低減さ
せなくてはならなくなる。The amount of the stabilizer added is 100% of the solid fuel/water slurry.
0.01 to 0.5 parts by weight, preferably 0
．． The amount is within the range of 0.02 to 0.2 parts by weight. If the amount of stabilizer added is less than the above range, the stability of the fixed fuel/water slurry will be insufficient, and if it is more than the above range, the viscosity of the solid fuel/water slurry will increase and the fluidity will decrease. , the solid fuel content must be reduced to maintain fluidity.
本発明の固体燃料・水スラリーを製造する方法としては
、例えば、固体燃料を通常使用される乾式または湿式の
粉砕機を使用して、所望の種々の幾何平均径を有する固
体燃料粒子を製造し、これらを、混合物の固体燃料粒子
の粒度分布が所望の値になるように調製混合し、これに
安定化剤および水を加えて激しく攪拌することによって
製造する方法がある。安定化剤を固体燃料の粉砕前に添
加すると安定化効果を充分に発揮させること力七できな
いので好ましくない。As a method for producing the solid fuel/water slurry of the present invention, for example, solid fuel particles having various desired geometric mean diameters are produced using a dry or wet pulverizer that is commonly used for solid fuel. There is a method of manufacturing these by mixing and adjusting the mixture so that the particle size distribution of solid fuel particles in the mixture becomes a desired value, adding a stabilizer and water to the mixture, and stirring vigorously. It is not preferable to add a stabilizer before pulverizing the solid fuel because the stabilizing effect cannot be fully exerted.
本発明の固体燃料・水スラリー中には、高濃度化に伴う
粘度上昇を抑制するために、適当な分散剤などのような
添加剤を含有させることができる。分散剤としては、そ
れ自体公知の物質を使用することができ、例えば、ナフ
タレンスルホン酸塩、石油スルホン酸塩、リグニンスル
ホン酸塩、及びこれらのホルマリン縮合物；ポリオキシ
エチレンアルキルエーテル硫酸エステル塩、ポリオキシ
エチレンアルキルアリールエーテル硫酸エステル塩：ポ
リグリセリンの硫酸化物；メラミン樹脂のスルホン酸塩
：石炭抽出物のスルホン酸塩等を挙げることができる。The solid fuel/water slurry of the present invention may contain additives such as a suitable dispersant in order to suppress an increase in viscosity due to an increase in concentration. As the dispersant, substances known per se can be used, such as naphthalene sulfonates, petroleum sulfonates, lignin sulfonates, and formalin condensates thereof; polyoxyethylene alkyl ether sulfate salts, Examples include polyoxyethylene alkylaryl ether sulfate salts: sulfates of polyglycerin; sulfonates of melamine resins: sulfonates of coal extracts.
分散剤は、固体燃料・水スラリー１００重量部４に対し
て、０．０１〜３重量部の範囲の量で使用するのが適当
である。また、分散剤は固体燃料・木スラリーの製造過
程の任意の時点、例えば、固体燃料を粉砕する時点、固
体燃料と水とを混合する時点、固体燃料・水スラリーの
製造後に添加することができる。The dispersant is suitably used in an amount ranging from 0.01 to 3 parts by weight per 100 parts by weight of the solid fuel/water slurry. Further, the dispersant can be added at any point in the solid fuel/wood slurry production process, for example, at the time of crushing the solid fuel, at the time of mixing the solid fuel and water, or after the production of the solid fuel/water slurry. .
本発明の固体燃料・水スラリーには、更にＰ）Ｉ調整剤
として、水酸化ナトリウム、水酸化カリウム、水酸化ア
ンモニウム等のアルカリ性物質を添加してもよい。The solid fuel/water slurry of the present invention may further contain an alkaline substance such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, etc. as a P)I regulator.
［発明の効果］
本発明の固定燃料・水スラリーは、固体燃料な高濃度で
含有しながら、低粘度であるので、液体燃料と同様に工
業的に使用することができる。さらに、本発明の固定燃
料・水スラリーは安定性が優れているので、長期間貯蔵
しても充分な流動性を保持しており、長距離の輸送が可
能である。[Effects of the Invention] The fixed fuel/water slurry of the present invention contains a solid fuel at a high concentration and has a low viscosity, so it can be used industrially like a liquid fuel. Furthermore, since the fixed fuel/water slurry of the present invention has excellent stability, it retains sufficient fluidity even when stored for a long period of time, and can be transported over long distances.
従って、本発明の固体燃料・水スラリーは、ボイラー、
加熱炉、等における燃料として、また、水素、−酸化炭
素などの製造におけるガス化用原料として好適に利用す
ることができるる。Therefore, the solid fuel/water slurry of the present invention can be used in boilers,
It can be suitably used as a fuel in a heating furnace, etc., and as a raw material for gasification in the production of hydrogen, carbon oxide, etc.
次に実施例及び比較例を示す、実施例及び比較例に於る
、固体燃料の性状、固体燃料粒子の調製、固体燃料・水
スラリーの製造、及び固体燃料・水スラリーの粘度測定
法、貯蔵安定性試験法および輸送安定性試験法を次に示
す。Next, Examples and Comparative Examples will be shown, in which properties of solid fuel, preparation of solid fuel particles, production of solid fuel/water slurry, and viscosity measurement method and storage of solid fuel/water slurry. The stability test method and transportation stability test method are shown below.
（１）固体燃料の性状 下記性状の脱灰処理した石炭を使用した。(1) Properties of solid fuel Deashed coal with the following properties was used.
工業分析（重量％）二 水分 ５．３（恒温基準
） 灰分 ０．７［Ｊ Ｉ ５Ｍ８８１２
］ 揮発分 ３８．８固定炭素 ５５．２
（２）固体燃料粒子の調製
奈良式自由粉砕機にて幾何平均径約９０ｐｍに粉砕した
粗粒状固体燃料と、同粗粒状固体燃料をさらにボールミ
ルにて幾何平均径約９＃Ｌｍに湿式粉砕した超微粒状固
体燃料とを、各々絶乾基準で６０対４０の重量割合で配
合、混合して微粒状固体燃料粒子を調製した。Industrial analysis (wt%) 2 Moisture 5.3 (constant temperature standard) Ash 0.7 [J I 5M8812
] Volatile content 38.8 Fixed carbon 55.2 (2) Preparation of solid fuel particles Coarse granular solid fuel pulverized to a geometric mean diameter of about 90 pm using a Nara free pulverizer, and the same coarse granular solid fuel further using a ball mill. Ultrafine solid fuel particles wet-pulverized to a geometric mean diameter of about 9 #Lm were blended and mixed in a weight ratio of 60:40 on an absolute dry basis to prepare fine solid fuel particles.
（３）固体燃料・水スラリーの製造
所定の濃度となるように設定された固体燃料と分散剤お
よびｐＨ調整剤を分散させた水とを、室温て混合容器に
入れ、手攪拌で予ＩＩＩ混合した後、特殊機化工業■製
うボディスパーを用いて回転数約３００ Ｏｒ、ｐ、ｍ
、で３分間攪拌し、−次固体燃料・水スラリーを製造し
、更にこれに安定化剤を所定量添加し、手攪拌で予備混
合した後、再び上記ラボディスパーを用いて回転数約３
０００ ｒ、ｐ、ｍ。(3) Production of solid fuel/water slurry Solid fuel set to a predetermined concentration and water in which a dispersant and a pH adjuster have been dispersed are placed in a mixing container at room temperature, and mixed by hand stirring. After that, use a body spar made by Tokushu Kika Kogyo ■ to reduce the number of revolutions to about 300 Or, p, m.
, for 3 minutes to produce a solid fuel/water slurry, to which a predetermined amount of stabilizer was added, pre-mixed by hand stirring, and then again using the lab body spar at a rotation speed of about 3.
000 r, p, m.
で３分間攪拌し、固体燃料・水スラリーを製造した。The mixture was stirred for 3 minutes to produce a solid fuel/water slurry.
（４）固体燃料・水スラリーの粘度測定法固体燃料・水
スラリーの粘度は、東京計器製Ｂ型回転粘度計（Ｎｏ、
３０−ター使用）を用いて測定した。ａ定は、温度２
７℃、回転数１２ ｒ、ｐ、ｍ。(4) Viscosity measurement method for solid fuel/water slurry The viscosity of solid fuel/water slurry was measured using a Tokyo Keiki B-type rotational viscometer (No.
30-ter). a constant is temperature 2
7°C, rotation speed 12 r, p, m.
で行ない、測定開始１分後の値を読取った。The value was read 1 minute after the start of the measurement.
（５）固体燃料・水スラリーの貯蔵安定性試験法固体燃
料・水スラリーを１００ｍＪＬのガラス製サンプル管容
器に仕込み、静置し、７日間経過後ガラス棒を貫入して
容器底部付近での沈降物の有無、圧密化程度を調べる方
法で固体燃料・水スラリーの安定性を評価した。固体沈
降層が認められる場合を「不良」、固体沈降物が認めら
れる場合を「やや不良」、固体沈降物が認められない場
合を「良」とした。(5) Storage stability test method for solid fuel/water slurry Solid fuel/water slurry was placed in a 100 mJL glass sample tube container, left to stand, and after 7 days, a glass rod penetrated and settled near the bottom of the container. The stability of the solid fuel/water slurry was evaluated by examining the presence of solid fuel and the degree of compaction. The case where a solid sediment layer was observed was rated as "poor", the case where solid sediment was observed was rated as "slightly poor", and the case where no solid sediment was observed was rated as "good".
（６）固体燃料・水スラリーの輸送安定性試験法固体燃
料・水スラリーを１００ｍｊＬのガラス製サンプル管容
器に仕込み、振幅４０ｍｍ、周波数９０ｍ１ｎ−’の水
平振動を５時間与えた後、ガラス棒を貫入して容器底部
付近での沈降物の有無、圧密化程度を調べる方法で固体
燃料・水スラリーの安定性を評価した。固体沈降層が求
められる場合を「不良」、固体沈降物が認められる場合
を「やや不良」、固体沈降物が認められない場合を「良
」とした。(6) Transport stability test method for solid fuel/water slurry A solid fuel/water slurry was placed in a 100 mjL glass sample tube container, and after 5 hours of horizontal vibration with an amplitude of 40 mm and a frequency of 90 m1n-', a glass rod was The stability of the solid fuel/water slurry was evaluated by penetrating the vessel and examining the presence of sediment near the bottom of the vessel and the degree of compaction. A case where a solid sediment layer was required was evaluated as "poor", a case where solid sediment was observed was evaluated as "slightly poor", and a case where no solid sediment was observed was evaluated as "good".
［実施例１〜３］
固体燃料として前記脱灰処理した石炭を使用し１分散剤
としてβ−ナフタレンスルホン酸ナトリウムのホルマリ
ン縮合物な固体燃料・水スラリーの０．５重量％使用し
、ＰＨ調整剤として水酸化アンモニウムを使用して前記
のようにして、固体燃料濃度７０重量％、粘度８００ｍ
Ｐａ５、ｐＨ８，０の一次固体燃料・水スラリーを製造
し１次いで第１表に示す安定剤を第１表に示す量添加し
、前記のようにして粘度的１０００１００Ｏの固体燃料
・水スラリーを製造した。その貯蔵安定性試験および輸
送安定性試験の結果を第１表に示す。[Examples 1 to 3] The demineralized coal was used as the solid fuel, 0.5% by weight of a formalin condensate of sodium β-naphthalene sulfonate solid fuel/water slurry was used as the dispersant, and the pH was adjusted. Using ammonium hydroxide as the agent, a solid fuel with a concentration of 70% by weight and a viscosity of 800 m
A primary solid fuel/water slurry with Pa5 and pH 8.0 is produced, then the stabilizer shown in Table 1 is added in the amount shown in Table 1, and a solid fuel/water slurry with a viscosity of 1000100 O is produced as described above. did. The results of the storage stability test and transport stability test are shown in Table 1.
［比較例１〜６］
安定剤として、第１表に示すような単一成分を使用する
か（比較例１〜５）、あるいは本発明の範囲外の組成を
有する混合物を使用した（比較例６）他は実施例におけ
ると同様にして、粘度な約１０００１００Ｏに調整した
固体燃料・水スラリーを製造した。その貯蔵安定性試験
および輸送安定性試験の結果を第１表に示す。[Comparative Examples 1 to 6] As a stabilizer, a single component as shown in Table 1 was used (Comparative Examples 1 to 5), or a mixture having a composition outside the scope of the present invention was used (Comparative Examples 6) A solid fuel/water slurry whose viscosity was adjusted to about 1,000,100 O was produced in the same manner as in the example. The results of the storage stability test and transport stability test are shown in Table 1.
［評価結果］
実施例と比較例との比較から、特定の有機物質と特定の
無機物質とを特定割合で組合せた安定化剤を含有する本
発明の固体燃料・水スラリーが優れた安定性を示すこと
が明らかである。[Evaluation Results] From a comparison between Examples and Comparative Examples, it was found that the solid fuel/water slurry of the present invention containing a stabilizer that is a combination of a specific organic substance and a specific inorganic substance in a specific ratio has excellent stability. It is clear to show.
以下余白Margin below
Claims (1)
５０〜８０重量部を含有する固体燃料・水スラリー１０
０重量部に、天然ガム、天然ガムの変成品、ポリビニル
アルコール、ポリアクリルアミド、カルボキシメチルセ
ルロースおよびヒドロキシエチルセルロースから選ばれ
た少なくとも一種の水溶性高分子物質１〜２０重量％と
、ベントナイト、アタパルジャイト、セピオライトおよ
びクリソタイル系アスベストからなる群から選ばれた少
なくとも一種の微粒子状無機物質８０〜９９重量％とか
らなる混合物である安定化剤が０．０１〜０．５重量部
含まれていることを特徴とする固体燃料・水スラリー。 ２、水溶性高分子物質が、グアーガム、ザンサンガム、
ローカストビーンガム、カラヤガムおよびアルギン酸ナ
トリウムから選ばれた天然ガムもしくはその変性品であ
ることを特徴とする特許請求の範囲第１項記載の固体燃
料・水スラリー。 ３、安定化剤が、該水溶性高分子物質２〜１０重量％と
、該微粒子状無機物質９０〜９８重量％とからなるもの
であることを特徴とする特許請求の範囲第１項記載の固
体燃料・水スラリー。 ４、安定化剤が、固体燃料・水スラリー１００重量部に
、０．０２〜０．３重量部台まれていることを特徴とす
る特許請求の範囲第１項記載の固体燃料・水スラリー。 ５、固定燃料・水スラリー中の固体燃料の含有量が６５
〜７５重量％の範囲にあることを特徴とする特許請求の
範囲第１項記載の固体燃料・水スラリー。 ６、固体燃料粒子の幾何平均径が７４μｍ以下であり、
その粒子の粒度分布が、対数正規分布における幾何標準
偏差δｇの値が６〜１２の範囲内にあるように調整され
ていることを特徴とする特許請求の範囲第１項記載の固
体燃料・水スラリー。[Claims] 1. Solid fuel/water slurry 10 containing 50 to 80 parts by weight of solid fuel particles made of coal and/or petroleum coke
0 parts by weight, 1 to 20% by weight of at least one water-soluble polymeric substance selected from natural gum, modified product of natural gum, polyvinyl alcohol, polyacrylamide, carboxymethyl cellulose, and hydroxyethyl cellulose, and bentonite, attapulgite, sepiolite, and It is characterized by containing 0.01 to 0.5 parts by weight of a stabilizer, which is a mixture of 80 to 99% by weight of at least one kind of particulate inorganic substance selected from the group consisting of chrysotile asbestos. Solid fuel/water slurry. 2. Water-soluble polymer substances include guar gum, xanthan gum,
The solid fuel/water slurry according to claim 1, which is a natural gum selected from locust bean gum, karaya gum, and sodium alginate, or a modified product thereof. 3. The stabilizer according to claim 1, wherein the stabilizer consists of 2 to 10% by weight of the water-soluble polymeric substance and 90 to 98% by weight of the particulate inorganic substance. Solid fuel/water slurry. 4. The solid fuel/water slurry according to claim 1, wherein the stabilizer is contained in an amount of 0.02 to 0.3 parts by weight per 100 parts by weight of the solid fuel/water slurry. 5. The content of solid fuel in the fixed fuel/water slurry is 65
Solid fuel/water slurry according to claim 1, characterized in that the solid fuel/water slurry is in the range of 75% by weight. 6. The geometric mean diameter of the solid fuel particles is 74 μm or less,
The solid fuel/water according to claim 1, wherein the particle size distribution of the particles is adjusted so that the value of the geometric standard deviation δg in the lognormal distribution is within the range of 6 to 12. slurry.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61313429A JPH0662969B2 (en) | 1986-12-26 | 1986-12-26 | Stable solid fuel / water slurry |
| CN87108310A CN1021343C (en) | 1986-12-26 | 1987-12-24 | Solid fuel-water slurry composition and process for preparation of same |
| AU83052/87A AU612127B2 (en) | 1986-12-26 | 1987-12-24 | Solid fuel-water slurry composition and process for the preparation of the same |
| KR1019870015002A KR900005100B1 (en) | 1986-12-26 | 1987-12-26 | Solid fuel-water slurry confution and it's preparaing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61313429A JPH0662969B2 (en) | 1986-12-26 | 1986-12-26 | Stable solid fuel / water slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63165489A true JPS63165489A (en) | 1988-07-08 |
| JPH0662969B2 JPH0662969B2 (en) | 1994-08-17 |
Family
ID=18041190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61313429A Expired - Fee Related JPH0662969B2 (en) | 1986-12-26 | 1986-12-26 | Stable solid fuel / water slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0662969B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824606B1 (en) * | 1998-05-20 | 2004-11-30 | Tolsa, S.A. | Additive for special plasters and mortars, compositions containing the additive and utilization of the additive in special plasters and mortars |
-
1986
- 1986-12-26 JP JP61313429A patent/JPH0662969B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824606B1 (en) * | 1998-05-20 | 2004-11-30 | Tolsa, S.A. | Additive for special plasters and mortars, compositions containing the additive and utilization of the additive in special plasters and mortars |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0662969B2 (en) | 1994-08-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |