CN87102923A - High-concentration water-coal-slurry additive - Google Patents
High-concentration water-coal-slurry additive Download PDFInfo
- Publication number
- CN87102923A CN87102923A CN87102923.5A CN87102923A CN87102923A CN 87102923 A CN87102923 A CN 87102923A CN 87102923 A CN87102923 A CN 87102923A CN 87102923 A CN87102923 A CN 87102923A
- Authority
- CN
- China
- Prior art keywords
- coal
- slurry
- water slurry
- pitch
- water
- 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
- 239000000654 additive Substances 0.000 title claims abstract description 13
- 230000000996 additive effect Effects 0.000 title claims abstract description 12
- 239000003250 coal slurry Substances 0.000 title claims description 8
- 239000003245 coal Substances 0.000 claims abstract description 57
- 239000002002 slurry Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010426 asphalt Substances 0.000 claims abstract description 4
- 239000011295 pitch Substances 0.000 claims description 17
- 239000011294 coal tar pitch Substances 0.000 claims description 2
- 239000011301 petroleum pitch Substances 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 2
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000004537 pulping Methods 0.000 description 5
- 241000223025 Caragana microphylla Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Liquid Carbonaceous Fuels (AREA)
Abstract
The present invention relates to a method for improving coal-water slurry solid content by adding surface treatment additive asphalt in the course of pulverizing and fine-grinding coal which is difficult to be slurry, and changing the hydrophilicity of coal itself, improving the slurry-forming property of coal and raising the solid content of coal in the coal-water slurry under the condition of not increasing viscosity of coal-water slurry. The asphalt has wide source and low price, and is an ideal surface treatment additive.
Description
The invention belongs to a kind of novel liquid fuel-coal water slurry.
Along with the coal water slurry technology of preparing moves towards the industrialization, people also progressively go deep into the research of coal, when the preparation coal water slurry, the kind of coal plays crucial effect, Watanabe etc. experiment showed, that contained ash in the coal is influential (the 6th international coal slurry meeting (1984)) to the slurry performance of coal.Wang Zuna, Zhang Rong once waited the interior water content of pointing out coal higher, then more be difficult for pulping (the 8th international coal slurry and preparation meeting (1986)), the oxy radical of proof such as Wu Jiashan (chemistry of fuel journal) coal the more, then more be difficult for pulping, the work of beam literary composition equality (the 8th international coal slurry proceeding (1986)) proves, the surface hydrophilicity of coal is higher, then more be difficult for forming the little coal water slurry of viscosity, more than these work surface properties that coal all has been described the pulping character of coal water slurry is had crucial effect.
Beam literary composition equality has been used the surface treating additive of bromination 16 pyridines as coal, makes the surface hydrophobicity of coal, can improve the sludge forming performance of coal.Pointed out to improve the direction of the sludge forming performance of coal, but this cationoid tensio-active agent cost costliness, and improved the pulping DeGrain of coal, thereby this surface treating additive does not have industrial application value.
In China, there are many places that fat coal is arranged, Shenmu County's coal in caragana microphylla tower ore deposit for example, ash content is low, the volatile matter height, though be the raw material that ideal prepares coal water slurry, its slurry performance is too poor, is difficult to prepare the coal water slurry of high density, how to find a kind of inexpensive and surface treating additive efficiently, this makes it to be used to prepare coal water slurry for the coal that enlarges coal water slurry, just has crucial meaning.
The objective of the invention is to use pitch as surface treating additive, in the broken and process of lapping of coal dust, pitch is joined in the coal of difficult pulping, the pitch add-on is the 0.5-10% of the butt weight of coal, can reduce viscosity of coal-water slurry significantly, table 1 has compared under same concentrations (70% coal contents on dry basis) and has added pitch and do not add the various coals of pitch and prepare viscosity of coal-water slurry difference.
Annotate: 1, viscosity measurement NDJ-1 type viscometer determining (Shanghai balance equipment factory product)
2, the pulverized coal particle of coal powder size 60% is less than 200 orders, and largest particle is no more than 250 μ
3, amount ratio＜2% of various additives of the ratio 0.5-10 of pitch and coal dust: 99.5-90 and coal
Can see from the data of table 1, add behind the pitch caragana microphylla tower coal, each coal of mansion, Zuoyun coal are all greatly reduced viscosity of coal-water slurry with their preparation.And to grace mouth coal be the exception, we have measured the wetting angle of coal again, correlation data is to add pitch and do not add bituminous, the results are shown in Table 2, can prove, add the hydrophobicity that pitch has improved coal from table 2 data, thereby reduced viscosity of coal-water slurry, and grace mouth coal itself just has higher hydrophobicity, so after adding pitch, viscosity can not change.
Asphalt source is extensive, low price, be used to the water-proof material building and pave the way in a large number, it is several that its ash content only accounted for for percent zero point, and fugitive constituent is greater than 50%, and being used to prepare coal water slurry, to reduce the viscosity effect obvious, and helpful burning and improve the characteristics of stability of coal slurry, be a kind of ideal industrial surface treatment additive, use it can not increase the cost of coal water slurry.Various pitches comprise that coal-tar pitch, petroleum pitch and electrode pitch can be used in and make surperficial treatment additive in the patent of the present invention.
Embodiments of the invention one
Coal: Shenmu County's coal (caragana microphylla tower ore deposit)
Coal powder size: 60 orders～200 orders 30%
200 orders following 70%
Under the identical viscosities condition, owing to add pitch the water coal slurry concentration that makes is increased, the results are shown in Table 3, table 4.
The embodiment of the invention two
Coal: Zuoyun, Shanxi coal
Coal powder size: account for 80% below 200 orders, unimodal slurry increases the water coal slurry concentration that makes owing to add pitch under the identical viscosities condition, the results are shown in Table 5, table 6.
Claims (3)
1, a kind of high-concentration coal-water slurry of being made up of coal, water and additive is characterized in that using surface treating additive pitch, has improved the slurry performance of coal, has improved the concentration of coal in the coal slurry, and asphalt content is (dry weight) 0.5-10% of coal.
2,, it is characterized in that surface treating additive pitch comprises coal-tar pitch, petroleum pitch and electrode pitch as the said coal water slurry of claim 1.
3, according to claim 1,2 said coal water slurry, the concentration that it is characterized in that coal water slurry is 60～75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102923 CN1020468C (en) | 1987-04-23 | 1987-04-23 | High concentration water-coal pulp additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102923 CN1020468C (en) | 1987-04-23 | 1987-04-23 | High concentration water-coal pulp additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87102923A true CN87102923A (en) | 1988-11-09 |
| CN1020468C CN1020468C (en) | 1993-05-05 |
Family
ID=4814180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102923 Expired - Fee Related CN1020468C (en) | 1987-04-23 | 1987-04-23 | High concentration water-coal pulp additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020468C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104531197A (en) * | 2014-12-19 | 2015-04-22 | 神华集团有限责任公司 | Preparation method of liquid fuel |
| CN105647605A (en) * | 2016-02-04 | 2016-06-08 | 常州市奥普泰科光电有限公司 | Preparation method of water-coal slurry dispersing agent |
| CN106929115A (en) * | 2017-03-30 | 2017-07-07 | 陕西科技大学 | A kind of cationic asphalt emulsion coating modification low-order coal and its method for preparing water-coal-slurry |
| CN108018094A (en) * | 2017-12-12 | 2018-05-11 | 万华化学集团股份有限公司 | A kind of slurries additive agent and preparation method thereof and the water-coal-slurry with its preparation |
-
1987
- 1987-04-23 CN CN 87102923 patent/CN1020468C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104531197A (en) * | 2014-12-19 | 2015-04-22 | 神华集团有限责任公司 | Preparation method of liquid fuel |
| CN105647605A (en) * | 2016-02-04 | 2016-06-08 | 常州市奥普泰科光电有限公司 | Preparation method of water-coal slurry dispersing agent |
| CN106929115A (en) * | 2017-03-30 | 2017-07-07 | 陕西科技大学 | A kind of cationic asphalt emulsion coating modification low-order coal and its method for preparing water-coal-slurry |
| CN108018094A (en) * | 2017-12-12 | 2018-05-11 | 万华化学集团股份有限公司 | A kind of slurries additive agent and preparation method thereof and the water-coal-slurry with its preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1020468C (en) | 1993-05-05 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |