CN101639473B - Method for judging coal slagging trend - Google Patents
Method for judging coal slagging trend Download PDFInfo
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- CN101639473B CN101639473B CN2008101175690A CN200810117569A CN101639473B CN 101639473 B CN101639473 B CN 101639473B CN 2008101175690 A CN2008101175690 A CN 2008101175690A CN 200810117569 A CN200810117569 A CN 200810117569A CN 101639473 B CN101639473 B CN 101639473B
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- coal
- slagging
- slagging scorification
- scorification
- trend
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- 239000003245 coal Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000010883 coal ash Substances 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- 238000003556 assay Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010117 shenhua Substances 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention provides a method for judging coal slagging trend. The method comprises the following steps: measuring coal ash softening temperature ST and coal ash components; calculating a Sc value according to a formula Sc = 2.521-0.00165ST +0.350 (B/A), wherein B/A = (CaO + MgO + Fe2O3 + K2O + Na2O)/ (SiO2 + Al2O3 + TiO2); and determining the coal slagging trend according to the Sc value.
Description
Technical field
The present invention relates to a kind of method of differentiating coal slagging trend, specifically, a kind of method of utilizing coal ash softening temperature and components of coal ash to calculate coal slagging index Sc.
Background technology
At present, the slagging scorification performance of coal mainly the slagging scorification performance test by conventional test (ash fusion point, ash component etc.) and small-sized pilot combustion channel wait and react its order of severity.Fit measuring slagging index and carrying out grade classification under the formula according to above-mentioned test findings in existing experience exactly in addition.
Yet above-mentioned some means of testing needs to carry out in particular study mechanism, and is for the incomplete unit inconvenience when testing coal sample slagging scorification performance of testing equipments such as power plant, only not high enough again with simple and easy index accuracy such as ash fusion points.
In addition, it is not comprehensive that existing experience fits the covering of formula coal, and its discriminant criterion can not adapt to fully for the Shenhua coal of exploitation afterwards.
The objective of the invention is facile coal data, draw the slagging scorification discriminant criterion of the higher and novel simple suitable Firing Shenhua Coal of accuracy according to routine.
Summary of the invention
The invention provides and a kind ofly decide the method for mixed-fuel burning proportion according to coal-fired slagging index, this method comprises the following steps:
(A) the coal ash softening temperature ST (carrying out) of measurement coal sample according to GB GB/T219-1996 " assay method of coal ash melting property ";
(B) carry out components of coal ash CaO, MgO, Fe
2O
3, K
2O, Na
2O, SiO
2, Al
2O
3And TiO
2Test (according to GB GB/T1574-1995 or 2007);
(C) carry out the calculating of slagging index Sc: (the quick slagging scorification method of discrimination that draws by ST, B/A is called S to Sc=2.521-0.00165ST+0.350 (B/A)
TBAMethod of discrimination, promptly according to the relation between ST and the B/A index, the preliminary clinkering property of judging fire coal),
B/A=(CaO+MgO+Fe wherein
2O
3+ K
2O+Na
2O)/(SiO
2+ Al
2O
3+ TiO
2) (the wherein components of coal ash weight content of the compound of above this molecular formula representative measured of each molecular formula representative);
(D) carry out grade classification according to the Sc value:
Table 1S
TBAMethod is to the classification results of clinkering property
| The slagging scorification classification | The Sc scope | The STBA method of discrimination |
| I (in low slagging scorification) | ＜0.45 | ST＞1255+212(B/A) |
| II (high slagging scorification) | 0.45 to＜0.65 | 1255+212(B/A)≥ST＞1134+212(B/A) |
| III (general serious slagging scorification) | 0.65 to＜0.85 | 1134+212(B/A)≥ST＞1013+212(B/A) |
| IV (serious slagging scorification) | ≥0.85 | ST≤1013+212(B/A) |
(E) judge the slagging trend of described coal according to above-mentioned standard.
By method of the present invention, can judge the slagging scorification performance of different coals, according to this slagging scorification performance, determine the boiler that this coal is suitable for.
Embodiment
The inventor gathers different coal samples and measures coal ash softening temperature ST and components of coal ash according to GB GB/T219-1996 " assay method of coal ash melting property " and GB/T1574-1995, according to Sc=2.521-0.00165ST+0.350 (B/A) (B/A=(CaO+MgO+Fe
2O
3+ K
2O+Na
2O)/(SiO
2+ Al
2O
3+ TiO
2)) calculating Sc.Wherein Firing Shenhua Coal Sc is about about 0.70, belongs to more serious slagging scorification coal.The Sc of Datong District's coal, Yanzhou coal＜0.45, low slagging scorification coal in promptly belonging to, and the Sc of Australian coal, Pingshou coal, accurate Ge Er coal and Huainan coal is between 0.65 to 0.85, belongs to high slagging scorification coal.The inventor finds that the coal of different slagging index is suitable for different boilers (suitable being meant for a long time (at least one moon) operation does not have the serious slagging scorification situation that causes blowing out), and the result is as shown in the table:
Classification of table 2 Firing Shenhua Coal clinkering property and the unit that adapts to
| The slagging scorification classification | The STBA scope | The unit that adapts to for example |
| I | ＜0.45 | By the boiler of slagging scorification but non-Firing Shenhua Coal design (Sc＜0.25 o'clock, slagging scorification aspect are fit to domestic major part and contain bituminous coal fired boiler by non-slagging scorification coal design) |
| II | 0.45 to＜0.65 | Coal such as the Firing Shenhua Coal more serious by slagging scorification design but time boiler early, as husky C boiler unit |
| III | 0.65 to＜0.85 | Press the boiler of more serious coal of slagging scorification such as Firing Shenhua Coal design in the recent period, the Taishan, Ding Zhou, the 600MW of Jia Hua power plant boiler |
| IV | ≥0.85 | Present domestic boiler unit is still difficult to be adapted to |
New Set Sc of the present invention and S
TBAOnly need can obtain by conventional analysis indexs such as ash fusion point, ash components, therefore simple and convenient.In addition, Sc and S
TBADiscrimination precision is higher than common discriminant criterion, and stronger to the specific aim of the more serious coal of slagging scorification such as Firing Shenhua Coal, and is therefore reliable and more targeted.
Claims (1)
1. method of differentiating coal slagging trend, this method comprises the following steps:
(A) measure the coal ash softening temperature ST of coal sample according to GB GB/T219-1996 " assay method of coal ash melting property ";
(B) carry out components of coal ash CaO, MgO, Fe according to GB GB/T1574-1995 or 2007
2O
3, K
2O, Na
2O, SiO
2, Al
2O
3And TiO
2Test;
(C) carry out the calculating of slagging index Sc: Sc=2.521-0.00165ST+0.350 (B/A),
B/A=(CaO+MgO+Fe wherein
2O
3+ K
2O+Na
2O)/(SiO
2+ Al
2O
3+ TiO
2);
(D) carry out grade classification according to the Sc value:
Table 1 S
TBAMethod is to the classification results of clinkering property
(E) differentiate coal slagging trend according to above-mentioned standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101175690A CN101639473B (en) | 2008-08-01 | 2008-08-01 | Method for judging coal slagging trend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101175690A CN101639473B (en) | 2008-08-01 | 2008-08-01 | Method for judging coal slagging trend |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101639473A CN101639473A (en) | 2010-02-03 |
| CN101639473B true CN101639473B (en) | 2011-08-10 |
Family
ID=41614561
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|---|---|---|---|
| CN2008101175690A Active CN101639473B (en) | 2008-08-01 | 2008-08-01 | Method for judging coal slagging trend |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759117B (en) * | 2012-07-24 | 2014-11-05 | 西安交通大学 | Method for relieving boiler slagging by using fly ash circulation |
| CN103592207B (en) * | 2013-11-18 | 2015-07-01 | 华中科技大学 | Method for identifying slagging trend of different mineral components in coal ash |
| CN104569283A (en) * | 2015-01-06 | 2015-04-29 | 华中科技大学 | Method for forecasting ash fusion point variation trend after coal and sludge combined firing |
| CN105021776B (en) * | 2015-07-28 | 2017-06-27 | 西安交通大学 | A kind of decision method of biomass boiler silicate slagging trend |
| CN110907431B (en) * | 2019-07-03 | 2022-09-06 | 上海理工大学 | Coal slagging degree judging method |
| CN111413482A (en) * | 2020-04-08 | 2020-07-14 | 西安热工研究院有限公司 | Method for judging coal slagging performance based on initial slagging temperature |
| CN113702615B (en) * | 2021-08-28 | 2023-12-22 | 西安热工研究院有限公司 | Method for judging slagging performance of coal ash |
| CN114019133B (en) * | 2021-11-09 | 2023-03-24 | 华电新疆哈密煤电开发有限公司 | Coal quality slagging characteristic comprehensive judgment method based on judgment index |
-
2008
- 2008-08-01 CN CN2008101175690A patent/CN101639473B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 陈怀珍等.神华动力用煤燃烧特性研究.《洁净煤技术》.2007,第13卷(第6期), * |
| 陈怀珍等.神华煤与其它烟煤掺烧的结渣性研究.《热力发电》.2007,(第10期), * |
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|---|---|
| CN101639473A (en) | 2010-02-03 |
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