CN104560245A - Method for preparing coal water slurry - Google Patents
Method for preparing coal water slurry Download PDFInfo
- Publication number
- CN104560245A CN104560245A CN201310667829.2A CN201310667829A CN104560245A CN 104560245 A CN104560245 A CN 104560245A CN 201310667829 A CN201310667829 A CN 201310667829A CN 104560245 A CN104560245 A CN 104560245A
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- Prior art keywords
- coal
- water slurry
- hopper
- conveying
- delivered
- Prior art date
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- 239000003245 coal Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000002002 slurry Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000654 additive Substances 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims description 14
- 239000002817 coal dust Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 8
- 238000000703 high-speed centrifugation Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 229920001732 Lignosulfonate Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000007859 condensation product Substances 0.000 claims description 3
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000019357 lignosulphonate Nutrition 0.000 claims description 3
- -1 polyoxyethylene (methyl) acrylate Polymers 0.000 claims description 3
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- 238000007873 sieving Methods 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 4
- 238000004537 pulping Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000003250 coal slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Liquid Carbonaceous Fuels (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a method for preparing coal water slurry. The method comprises the following steps: A. conveying raw coal into a hopper by using a lifter at first, then conveying the raw coal in the hopper into a high-speed centrifugal jet mill by using a quantitative feeding machine for crushing, and crushing the raw coal to coal powder with fineness of 200-300 meshes; B. conveying the coal powder obtained in the step A by crushing into a dust collector by using a pipeline and a centrifugal fan in an air draft manner, and collecting the coal powder; and C. conveying the obtained coal powder into a slurrying stirring tank by using a feeding machine and a screw conveyor, adding water and additives, stirring for 2-3 hours, and filtering to obtain a finished product of coal water slurry. The fineness of the coal water slurry product prepared by the preparation method disclosed by the invention is larger than 200 meshes, the 200-mesh sieving rate is 100%, and the 300-mesh sieving rate is 60%.
Description
Technical field
The present invention relates to COAL-WATER SLURRY TECHNOLOGY field, be specifically related to a kind of preparation method of coal water slurry.
Background technology
The conventional preparation techniques of coal water slurry is: raw coal → fragmentation → add water, additive are carried out ball (grinding) and ground slurry → filtration → finished product (coal water slurry).The party's intermittent wet method pulping process owned by France, also has some to be continuity wet method pulping process, and the feature of this technique uses coal to have very strong selectivity, processing requirement is high, and pulping product reads generally≤200 orders (sieving rate >=90%) in detail, water ratio >=34% simultaneously, transportation cost is high.
Summary of the invention
The invention provides a kind of preparation method of coal water slurry, according to pulping product fineness > 200 order that the method is obtained, its 200 order sieving rate reaches 100%, and 300 order sieving rates reach 60%.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
A preparation method for coal water slurry, the method comprises the following steps:
A. first raw coal lift is delivered into hopper, then pulverize in the raw coal feeding high speed centrifugation micronizer mill in hopper with the rate of feeding of 1T/H ~ 1.5T/H with batch feeder, being crushed to fineness of pulverized coal is 200 order ~ 300 orders;
B. steps A is pulverized the coal dust obtained to be delivered in slurrying stirred pot, then add water, additive, stir 2 ~ 3 hours, then filter and obtain this coal water slurry finished product; The mass ratio of described coal dust, water, additive is 55 ~ 58:42 ~ 45:0.5 ~ 0.7; Described additive forms for 8:1:1 is composite in mass ratio primarily of naphthalene sulfonic acidformaldehyde condensation product sodium salt, sulfonated lignin and alkylphenol polyoxyethylene (methyl) acrylate;
Above-mentioned, in step B, coal dust is delivered to particle collector by pipeline and centrifugal blower exhausting, and then be transported in slurrying stirred pot through feeding machine and worm conveyor; Wherein, the wind pulverized coal conveying that centrifugal blower is taken out is to particle collector, the dust remained in wind is got back in high speed centrifugation micronizer mill with described wind and is carried out the use of Xun ring, this results in an airtight power transportation pipe, the dust that coal dust is produced in course of conveying can not leak in outside air and cause environmental pollution, also can play effect dust being carried out to secondary recovery utilization simultaneously.
Owing to adopting technique scheme, the beneficial effect that the present invention obtains is:
1. ball mill wet method pulping process traditionally obtains water coal slurry concentration is 55%, applies pulping process of the present invention and water coal slurry concentration can be made to bring up to 58%; Its fineness of pulverized coal increases, and 200 order sieving rates reach 100%, and 300 order sieving rates reach 60%; Pulping is effective, and expands the range of choice being suitable for coal.
2. the pulverizing of raw coal and the course of conveying of coal dust carry out in closed environment, can well solve environmental protection and safety problem.
3. the present invention in stokehold slurrying, can reduce transportation cost.
Embodiment
Below in conjunction with example, the invention will be further described:
In embodiment 1 ~ embodiment 3, described additive refers to that primarily of naphthalene sulfonic acidformaldehyde condensation product sodium salt, sulfonated lignin and alkylphenol polyoxyethylene (methyl) acrylate be the composite compositional liquor body additives of 8:1:1 in mass ratio.
Embodiment 1
First raw coal lift is delivered into hopper, then pulverize in the raw coal feeding high speed centrifugation micronizer mill in hopper with the rate of feeding of 1 T/H with batch feeder, being crushed to fineness of pulverized coal is 200 orders; The coal dust obtained is delivered in slurrying stirred pot, then adds water, additive, stir 2 hours, then filter and obtain this coal water slurry finished product; Wherein, the mass ratio of coal dust, water, additive is 55:42:0.5.
Embodiment 2
First raw coal lift is delivered into hopper, then pulverize in the raw coal feeding high speed centrifugation micronizer mill in hopper with the rate of feeding of 1.2 T/H with batch feeder, being crushed to fineness of pulverized coal is 250 orders; The coal dust obtained is delivered in slurrying stirred pot, then adds water, additive, stir 2.5 hours, then filter and obtain this coal water slurry finished product; Wherein, the mass ratio of coal dust, water, additive is 58:45:0.7.
Embodiment 3
First raw coal lift is delivered into hopper, then pulverize in the raw coal feeding high speed centrifugation micronizer mill in hopper with the rate of feeding of 1.5 T/H with batch feeder, being crushed to fineness of pulverized coal is 300 orders; The coal dust obtained is delivered in slurrying stirred pot, then adds water, additive, stir 3 hours, then filter and obtain this coal water slurry finished product; Wherein, the mass ratio of coal dust, water, additive is 56:44:0.6.
Claims (2)
1. a preparation method for coal water slurry, is characterized in that the method comprises the following steps:
A. first raw coal lift is delivered into hopper, then pulverize in the raw coal feeding high speed centrifugation micronizer mill in hopper with the rate of feeding of 1T/H ~ 1.5T/H with batch feeder, being crushed to fineness of pulverized coal is 200 order ~ 300 orders;
B. steps A is pulverized the coal dust obtained to be delivered in slurrying stirred pot, then add water, additive, stir 2 ~ 3 hours, then filter and obtain this coal water slurry finished product; The mass ratio of described coal dust, water, additive is 55 ~ 58:42 ~ 45:0.5 ~ 0.7; Described additive forms for 8:1:1 is composite in mass ratio primarily of naphthalene sulfonic acidformaldehyde condensation product sodium salt, sulfonated lignin and alkylphenol polyoxyethylene (methyl) acrylate.
2. the preparation method of a kind of coal water slurry according to claim 1, is characterized in that in described step B, coal dust is delivered to particle collector by pipeline and centrifugal blower exhausting, and then is transported in slurrying stirred pot through feeding machine and worm conveyor; Wherein, the wind pulverized coal conveying that centrifugal blower is taken out is to particle collector, and the dust remained in wind is got back in high speed centrifugation micronizer mill with described wind and carried out the use of Xun ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667829.2A CN104560245A (en) | 2013-12-07 | 2013-12-07 | Method for preparing coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667829.2A CN104560245A (en) | 2013-12-07 | 2013-12-07 | Method for preparing coal water slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104560245A true CN104560245A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310667829.2A Pending CN104560245A (en) | 2013-12-07 | 2013-12-07 | Method for preparing coal water slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104560245A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244268A (en) * | 2016-10-24 | 2016-12-21 | 中煤科工清洁能源股份有限公司 | High-concentration coal-water slurry and high-effective classifying grain control the method for standby high-concentration coal-water slurry |
| CN109536223A (en) * | 2018-11-07 | 2019-03-29 | 南京楠达环保科技有限公司 | A kind of preparation method and production equipment of high concentration gasified coal water slurry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322796A (en) * | 2001-06-13 | 2001-11-21 | 津江超细粉体(武汉)有限公司 | Superfine high-density coal-water fluid producing system |
| CN1560204A (en) * | 2004-02-24 | 2005-01-05 | 毅 张 | Preparation process of water coal paste |
| CN101550369A (en) * | 2008-12-26 | 2009-10-07 | 新奥新能(北京)科技有限公司 | Water-coal-slurry additive and preparation method thereof |
| CN101884946A (en) * | 2009-05-15 | 2010-11-17 | 耿海儒 | Continuous micro-pulverized coal preparing system |
| CN203319958U (en) * | 2013-04-09 | 2013-12-04 | 陕煤集团神木张家峁矿业有限公司 | System for preparing coal water slurry through dry process |
-
2013
- 2013-12-07 CN CN201310667829.2A patent/CN104560245A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322796A (en) * | 2001-06-13 | 2001-11-21 | 津江超细粉体(武汉)有限公司 | Superfine high-density coal-water fluid producing system |
| CN1560204A (en) * | 2004-02-24 | 2005-01-05 | 毅 张 | Preparation process of water coal paste |
| CN101550369A (en) * | 2008-12-26 | 2009-10-07 | 新奥新能(北京)科技有限公司 | Water-coal-slurry additive and preparation method thereof |
| CN101884946A (en) * | 2009-05-15 | 2010-11-17 | 耿海儒 | Continuous micro-pulverized coal preparing system |
| CN203319958U (en) * | 2013-04-09 | 2013-12-04 | 陕煤集团神木张家峁矿业有限公司 | System for preparing coal water slurry through dry process |
Non-Patent Citations (2)
| Title |
|---|
| 周仕学: "《粉体工程导论》", 28 February 2010, 科学出版社 * |
| 郝临山 等: "《水煤浆制备与应用技术》", 30 September 2003, 煤炭工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244268A (en) * | 2016-10-24 | 2016-12-21 | 中煤科工清洁能源股份有限公司 | High-concentration coal-water slurry and high-effective classifying grain control the method for standby high-concentration coal-water slurry |
| CN106244268B (en) * | 2016-10-24 | 2018-05-18 | 中煤科工清洁能源股份有限公司 | The method of high-concentration coal-water slurry and the standby high-concentration coal-water slurry of high-effective classifying grain control |
| CN109536223A (en) * | 2018-11-07 | 2019-03-29 | 南京楠达环保科技有限公司 | A kind of preparation method and production equipment of high concentration gasified coal water slurry |
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Application publication date: 20150429 |
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