JPH0633377B2 - Coal-water slurry - Google Patents
Coal-water slurryInfo
- Publication number
- JPH0633377B2 JPH0633377B2 JP7435586A JP7435586A JPH0633377B2 JP H0633377 B2 JPH0633377 B2 JP H0633377B2 JP 7435586 A JP7435586 A JP 7435586A JP 7435586 A JP7435586 A JP 7435586A JP H0633377 B2 JPH0633377 B2 JP H0633377B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- weight
- slurry
- fine particles
- particle size
- 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 - Lifetime
Links
- 239000002002 slurry Substances 0.000 title claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 17
- 239000002245 particle Substances 0.000 claims description 23
- 239000010419 fine particle Substances 0.000 claims description 18
- 239000003245 coal Substances 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000003610 charcoal Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- VYKGZYAKGHXTNC-UHFFFAOYSA-N 2-nonyl-2-phenyloxirane Chemical compound C=1C=CC=CC=1C1(CCCCCCCCC)CO1 VYKGZYAKGHXTNC-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229960002796 polystyrene sulfonate Drugs 0.000 description 1
- 239000011970 polystyrene sulfonate Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
Landscapes
- Liquid Carbonaceous Fuels (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、新規な流体化燃料として注目されている石炭
−水スラリに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coal-water slurry attracting attention as a novel fluidized fuel.
石炭−水スラリの製造方法を大別すると、目的濃度の石
炭−水スラリを１段で調製する方法（以下、１段法）
と、粗砕と微粉砕とを別に行ない、調製槽にて目的濃度
の石炭−水スラリを調製する多段方法（以下、多段法）
とがある。The method for producing a coal-water slurry is roughly classified into a method for preparing a coal-water slurry having a desired concentration in one step (hereinafter, a one-step method).
And multi-stage method of preparing a coal-water slurry of a desired concentration in a preparation tank by separately performing coarse pulverization and fine pulverization (hereinafter, multi-stage method)
There is.
上記の１段法は、調製系統は単純で、石炭濃度が向上す
る広い粒径分布を有するが、燃焼に悪影響を及ぼす大粒
径が多くなり、それを減ずるために粉砕度を上げると動
力が大きくなりかつ、粘土が上昇する。大粒径の除去も
高粘度のため困難である。The above-mentioned one-step method has a simple preparation system and has a wide particle size distribution that improves the coal concentration, but the large particle size that adversely affects combustion increases, and the power is increased by increasing the pulverization degree to reduce it. It grows and the clay rises. It is also difficult to remove large particles because of high viscosity.
多段法は、システムが複雑となるかわりに、前述の大粒
径の除去は容易となる。但し、大粒径は除去すると、ス
ラリ濃度は低くなる。The multi-step method facilitates removal of the above-mentioned large particle size at the expense of a complicated system. However, when the large particle size is removed, the slurry concentration becomes low.
本発明は、この従来の多段法が粒径を細かくすること、
１段法の粒径分布に近づけることを一つの目標にしてい
たのに対し、粗砕、微粉砕の目標を規定し、各粒度の適
切な配合により、スラリのより高濃度化を図ると共に、
粗粒の少ない石炭−水スラリを提供することを目的とす
る。The present invention is that this conventional multi-stage method makes the particle size finer,
While one goal was to approach the particle size distribution of the one-step method, the goal of coarse crushing and fine crushing was stipulated, and the concentration of the slurry was increased by appropriately mixing each particle size.
It is an object to provide a coal-water slurry having a small number of coarse particles.
本発明は、粗砕物を１５０〜２００μのふるいで分級
し、最大粒径が２００〜１５０μでロジン−ラムラ線図
で傾きｎが１．０〜２．５となるものを細粒とし、微粒
として、平均粒径が１０〜０．１μの石炭粉を調製し、
これらを重量比にして５０／５０〜９５／５となるよう
に混合し、添加剤を対石炭重量当り０．１〜２．０％、
水を全体の２０〜５０％を占めるように添加してなる石
炭−水スラリである。In the present invention, the coarsely crushed material is classified with a sieve of 150 to 200 µ, and the one having a maximum particle diameter of 200 to 150 µ and an inclination n of 1.0 to 2.5 in the rosin-Rammula diagram is made into fine particles. , Prepare coal powder having an average particle size of 10 to 0.1 μ,
These are mixed in a weight ratio of 50/50 to 95/5, and an additive is added in an amount of 0.1 to 2.0% based on the weight of coal,
This is a coal-water slurry in which water is added so as to account for 20 to 50% of the whole.
本発明において、細粒として最大粒径２００〜１５０μ
でロジン−ラムラ線図の傾きｎ１．０〜２．５の石炭粉
を用いるのは、次の理由による。In the present invention, the fine particles have a maximum particle size of 200 to 150 μm.
The reason why the coal powder having the slope n1.0 to 2.5 of the rosin-Ramula diagram is used in the above is because of the following reasons.
すなわち、最大粒径が２００〜１５０μであれば、燃焼
性に悪影響を及ぼす大粒は除去されており、加えて、特
に燃焼性に問題のある石炭に関しては、分級点を１５０
μとすれば、燃焼性の阻害を極力最小限にとヾめること
ができるからである。That is, if the maximum particle size is 200 to 150 μ, large particles that adversely affect flammability are removed. In addition, especially for coal having a problem of flammability, the classification point is 150
This is because if μ is set, the inhibition of flammability can be minimized as much as possible.
また、ロジン−ラムラ線図 Ｒ＝ae-bxn（ｘ：粒径、
ａ，ｂ，ｎ：定数）の傾きｎが１．０未満では、粗粒の
比率が大となり細粒についての目標粒径の収率が減じ、
２．５より大であると技術的にかなりの工夫が必要とな
る上、斯る粒径のものの製造がかなり困難となるからで
ある。In addition, a rosin-Ramula diagram R = ae -bxn (x: particle size,
When the gradient n of (a, b, n: constant) is less than 1.0, the ratio of coarse particles becomes large, and the yield of the target particle size for fine particles decreases,
This is because if it is larger than 2.5, it is necessary to devise a large amount of technology, and it becomes considerably difficult to manufacture particles having such a particle size.
また本発明において、微粒として５０％平均粒径１０〜
０．１μの石炭粉を用いるのは、斯る範囲の粒径であれ
ば、コロイド状態を得ることができ、安定なスラリとな
るからである。Further, in the present invention, as fine particles, 50% average particle diameter 10 to
The reason why the coal powder of 0.1 μm is used is that a colloidal state can be obtained and a stable slurry can be obtained if the particle size is in this range.
更に本発明において、上記の細粒と微粒とを重量比で５
０／５０〜９５／５となるように混合するのは、微粒が
５重量％に満たないと、安定なスラリとならず、粘度が
上昇し、５０重量％を超えると、動力的にロスが大とな
るからである。Furthermore, in the present invention, the above fine particles and fine particles are contained in a weight ratio of 5
When the fine particles are less than 5% by weight, the slurry is not stable and the viscosity increases, and when the amount exceeds 50% by weight, the loss is kinetic. Because it will be large.
なお、本発明において、石炭の濃度は、全スラリの重量
当り５０〜８０％とすることが好ましい。In the present invention, the coal concentration is preferably 50 to 80% based on the weight of the entire slurry.
また、本発明において、添加剤を対石炭重量当り０．１
〜２．０％とするのは、０．１％未満であると添加する
意義がなく、２．０％を超えても効果の顕著な向上は見
られず、コスト的に不利となるからである。Further, in the present invention, the additive is added in an amount of 0.1
The reason for setting the content to ˜2.0% is that if it is less than 0.1%, there is no point in adding it, and if it exceeds 2.0%, no significant improvement in the effect is seen, which is a cost disadvantage. is there.
なお、本発明において、添加剤としては、アニオン系の
ものとしてナフタレンスルホン酸塩、ナフタレン・ホル
マリン縮合物、ポリスチレンスルホン酸塩、リグニンス
ルホン酸塩等が、ノニオン系のものとしてエチレンオキ
サイド・プロピレンオキサイド、ノニルフエニルエチレ
ンオキサイド付加物、ポリエチレンオキサイド等が使用
できる。In the present invention, as the additive, naphthalene sulfonate as an anionic one, naphthalene / formalin condensate, polystyrene sulfonate, lignin sulfonate, and the like, ethylene oxide / propylene oxide as a nonionic one, Nonylphenyl ethylene oxide adduct, polyethylene oxide and the like can be used.
更に、本発明において、水はスラリ濃度を調製するため
に添加されるものであり、全体の20重量％未満であると
スラリとならず、５０重量％より多いと安定なスラリと
ならないので、全スラリに対し重量当り２０〜５０％と
するのである。Further, in the present invention, water is added to adjust the slurry concentration, and if it is less than 20% by weight of the whole, it will not be a slurry, and if it is more than 50% by weight, it will not be a stable slurry. It is 20 to 50% by weight with respect to the slurry.
なお、本発明スラリを調製する為に必要となる装置は、
粗砕機、分級機、微粉砕機、混練機より成る。The apparatus required for preparing the slurry of the present invention is
It consists of a coarse crusher, a classifier, a fine crusher and a kneader.
比較例１ 石炭（Ａ炭）を７０重量部、水を３０重量部とし、添加
剤（ナフタレンスルホン酸ナトリウム塩）を０．３５重
量部加え、チューブミルにて粉砕し、滞留時間を２００
＃（７４μ）パス80重量％になるように設定した。Comparative Example 1 70 parts by weight of coal (A charcoal), 30 parts by weight of water, 0.35 parts by weight of an additive (sodium salt of naphthalene sulfonic acid) were added, and the mixture was pulverized with a tube mill and the residence time was 200.
# (74μ) pass was set to 80% by weight.
得られた石炭−水スラリの性状は、４８＃（２９７μ）
以上２重量％、粘度１０１５cp（at １００sec-1）と
粗粒がある分粘度が低い。また、本スラリを燃焼させる
とＥ×O2 ４％の条件で灰中未燃分７重量％となり、燃
焼性の低さを示している。The property of the obtained coal-water slurry is 48 # (297μ).
The above content is 2% by weight and the viscosity is 1015 cp (at 100 sec -1 ). Further, when the present slurry is burned, the unburned content in ash becomes 7% by weight under the condition of E × O 2 4%, which shows low combustibility.
比較例２ 石炭（Ａ炭）を乾式粉砕にて２００＃（74μ）パス７０
重量％まで粉砕し、１００＃（１４９μ）のふるいで分
級したふるい下を細粒とした。同じに乾式粉砕物をさら
に微粉砕し、平均粒径が３μとなるように調整し、微粒
とした。Comparative Example 2 Coal (A charcoal) was dry-ground to 200 # (74μ) pass 70
The granules were pulverized to a weight percentage and classified with a 100 # (149μ) sieve to make fine particles under the sieve. Similarly, the dry pulverized product was further finely pulverized and adjusted to have an average particle size of 3 μm to obtain fine particles.
細粒を５０重量部、微粒を１５重量部、水を３５重量部
と添加剤（比較例１と同じもの）を０．３３重量部加
え、混練機にて調整し、スラリとした。50 parts by weight of fine particles, 15 parts by weight of fine particles, 35 parts by weight of water and 0.33 parts by weight of an additive (the same as in Comparative Example 1) were added, and the mixture was adjusted with a kneader to obtain a slurry.
得られた石炭−水スラリの性状は、粘度1100cp（at１０
０sec-1）と比較例１の粘度と同程度であるが、濃度が
低い。また、本スラリを燃焼させるとＥ×O2 ４％の条
件で灰中未燃分３重量％となり、未燃分の低さを示して
いる。The properties of the obtained coal-water slurry have a viscosity of 1100 cp (at 10
0 sec −1 ), which is about the same as the viscosity of Comparative Example 1, but the concentration is low. Further, when the present slurry is burned, the unburned content in the ash becomes 3% by weight under the condition of E × O 2 4%, which shows a low unburned content.
実施例１ 石炭（Ａ炭）を粗砕機で粉砕しながら１５０μ以下のも
のを分級し細粒とした。また、これを一部微粉砕機に
て、平均粒径３μとなるように粉砕しこれを微粒とし
た。Example 1 Coal (A charcoal) was crushed with a crusher to classify coal having a particle size of 150 μm or less into fine particles. Further, this was partly pulverized by a fine pulverizer so as to have an average particle size of 3 μm and made into fine particles.
細粒を５５重量部、微粒を１５重量部、水を３０重量
部、添加剤（比較例１と同じもの）を０．３５重量部加
え、混練機にて調製し、スラリとした。55 parts by weight of fine particles, 15 parts by weight of fine particles, 30 parts by weight of water, and 0.35 parts by weight of an additive (the same as in Comparative Example 1) were added to prepare a kneader to prepare a slurry.
得られた石炭−水スラリの性状は、粘度1010cp（at１０
０sec-1）となり、前出の比較例１，２と同程度で、濃
度は比較例１と同じであつた。また本スラリを燃焼させ
るとＥ×O2 ４％の条件で、灰中未燃分３重量％とな
り、燃焼性の良さを示している。The properties of the obtained coal-water slurry have a viscosity of 1010 cp (at10
0 sec −1 ), which was about the same as in Comparative Examples 1 and 2 and the concentration was the same as in Comparative Example 1. When this slurry was burned, the unburned content in ash was 3% by weight under the condition of E × O 2 4%, which shows good combustibility.
Claims (1)
でロジン−ラムラ線図で傾きｎが１．０〜２．５となる
石炭粉を用い、微粒として、５０％平均粒径が１０〜
０．１μとなる石炭粉を用い、前記細粒と微粒とを重量
比で５０：５０〜９５：５となる割合で混合し、添加剤
を対石炭重量当り０．１〜２．０％、水を全体の重量当
り２０〜５０％を占めるように添加してなる石炭−水ス
ラリ。1. A fine grain having a maximum grain size of 200 to 150 μm.
In the rosin-ramula diagram, coal powder having an inclination n of 1.0 to 2.5 is used, and as a fine particle, a 50% average particle diameter is 10 to 10.
0.1 μ of coal powder was used, the fine particles and the fine particles were mixed in a weight ratio of 50:50 to 95: 5, and the additive was 0.1 to 2.0% based on the weight of coal, A coal-water slurry prepared by adding water so as to account for 20 to 50% of the total weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7435586A JPH0633377B2 (en) | 1986-04-02 | 1986-04-02 | Coal-water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7435586A JPH0633377B2 (en) | 1986-04-02 | 1986-04-02 | Coal-water slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62232492A JPS62232492A (en) | 1987-10-12 |
| JPH0633377B2 true JPH0633377B2 (en) | 1994-05-02 |
Family
ID=13544733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7435586A Expired - Lifetime JPH0633377B2 (en) | 1986-04-02 | 1986-04-02 | Coal-water slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633377B2 (en) |
-
1986
- 1986-04-02 JP JP7435586A patent/JPH0633377B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62232492A (en) | 1987-10-12 |
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