CN102517123A - Yulin coal ash with lowered fusion temperature - Google Patents
Yulin coal ash with lowered fusion temperature Download PDFInfo
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- CN102517123A CN102517123A CN2011103770669A CN201110377066A CN102517123A CN 102517123 A CN102517123 A CN 102517123A CN 2011103770669 A CN2011103770669 A CN 2011103770669A CN 201110377066 A CN201110377066 A CN 201110377066A CN 102517123 A CN102517123 A CN 102517123A
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- coal ash
- yulin
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Abstract
The invention provides Yulin coal ash with lowered fusion temperature. Sand accounting for 5-40 percent the weight of the Yulin coal ash or quartz sand accounting for 5-15 percent the weight of the Yulin coal ash is doped in the Yulin coal ash. The fusion temperature of the Yulin coal ash improved by the Yulin coal ash provided by the invention is lowered, and thereby, the viscosity-temperature characteristic curve of the Yulin coal ash tends to be stable.
Description
Technical field
The present invention relates to a kind of Yulin coal ash, particularly a kind of Yulin coal ash that reduces Yulin coal ash melting property temperature.
Background technology
China is one of coal production the biggest in the world and country of consumption; The proportion that coal production accounts for global coal production is 45.6%; Wherein, the proportion that the Chinese coal consumption accounts for global consumption of coal is 46.9%, and the proportion of coal in China's primary energy source consumption is about 70%.The energy structure of the oil-poor weak breath of the rich coal of China has determined the energy consumption structure of China, and in longer for some time, the proportion of coal in China's primary energy source production and consumption accounts for 2/3 structure and can not change.
In order to reduce coal to the pollution that ecotope causes, to develop clean coal technology is the important channel of improving coal utilizaton rate, reducing ecological environmental pollution.In the important clean coal utilization technology, gasification is a kind of important techniques.
In the coal gasification course, the melting characteristic of coal ash slag and viscosity-temperature characteristics are some important indicators of coal for gasification, to different gasification technologies certain difference are arranged.Decide the melting characteristic and the viscosity-temperature characteristics of the coal ash slag of coal for gasification according to the deslagging mode of gasification technology; The water coal slurry pressure gasification technology belongs to the slag tap mode; Requiring the melting characteristic of the coal ash slag of coal for gasification is that the ash fusibility temperature is lower than service temperature; So that deslagging smoothly, the viscosity-temperature characteristics curve requires mild, can make the operating temperature range broad be convenient to operation and control like this.Therefore, the ash fusibility temperature of coal and viscosity-temperature characteristics are to select an important condition of coal in the Coal Gasification Technology.The ash fusibility temperature of improvement coal and viscosity-temperature characteristics are important technologies in the present Coal Gasification Technology to adapt to corresponding Coal Gasification Technology.
In recent years; The construction development of large-scale Coal Chemical Industry projects such as alcohol, ammonia efficiently; Relate to large-scale Coal Gasification Technology,, determined utilization change on a large scale, high efficiency, the cleaningization of coal for the energy structure of China in present and later longer for some time.Which kind of Coal Gasification Technology no matter, grasp and the ash fusibility temperature and the viscosity-temperature characteristics of autotelic control coal most important.Therefore, it is very necessary furtheing investigate the ash fusibility temperature of different coals and the improving technology of viscosity-temperature characteristics.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Yulin coal ash that reduces Yulin coal ash melting property temperature, and the ash fusibility temperature of Yulin of the present invention coal ash reduces by 50～150 ℃, significantly improves the coal ash viscosity-temperature characteristics, helps various coal water slurry gasification furnace operatings.
The present invention reduces Yulin coal ash of Yulin coal ash melting property temperature; In the coal ash of Yulin, be doped with and account for Yulin coal ash and weigh 5～40% sand; This texturing temperature that is doped with Yulin coal ash of sand is 1120～1170DT/ ℃; Softening temperature is 1130～1210DT/ ℃, and yield temperature is 1150～1230DT/ ℃.
As the preferred embodiments of the present invention, adulterated sand accounts for Yulin and weighs 5～10% in the coal ash of said Yulin;
As the preferred embodiments of the present invention, adulterated sand accounts for Yulin coal ash and weighs 20～40% in the coal ash of said Yulin;
A kind of Yulin coal ash that reduces Yulin coal ash melting property temperature; In the coal ash of Yulin, be doped with and account for Yulin coal ash and weigh 5～15% silica sand; This texturing temperature that is doped with Yulin coal ash of silica sand is 1120～1170DT/ ℃; Softening temperature is 1130～1210DT/ ℃, and yield temperature is 1150～1230DT/ ℃.
As the preferred embodiments of the present invention, adulterated silica sand accounts for Yulin coal ash and weighs 5～10% in the coal ash of said Yulin;
As the preferred embodiments of the present invention, the composition and the weight percent of said Yulin coal ash are: SiO
235.73%, Al
2O
310.14%, Fe
2O
314.11%, CaO 22.44%, and MgO 3.08%, SO
38.89%, TiO
20.43%, K
2O 0.90%, Na
2O 2.14%, P
2O
50.03%;
As the preferred embodiments of the present invention, SiO in the said silica sand
2Content>=99%.
Yulin coal ash that the present invention reduces Yulin coal ash melting property temperature has the following advantages at least: the ash fusibility humid test result to Yulin of the present invention coal ash can know; Yulin coal ash after the present invention's improvement; Its ash fusibility temperature reduces by 50～150 ℃, causes its viscosity-temperature characteristics curve to tend to be steady thus.
Description of drawings
Fig. 1 is traditional Yulin coal ash viscosity-temperature characteristics curve;
Fig. 2 is Yulin coal ash viscosity-temperature characteristics curve after the present invention improvement.
Embodiment
The technical scheme that the present invention taked is: the invention discloses a kind of Yulin coal ash that reduces Yulin coal ash melting property temperature and comprise Yulin coal ash and account for coal ash and weigh 5～40% sand or account for coal ash and weigh 5～15% silica sand; This texturing temperature that is doped with Yulin coal ash of sand or silica sand is 1120～1170DT/ ℃; Softening temperature is 1130～1210DT/ ℃, and yield temperature is 1150～1230DT/ ℃.
Below in conjunction with embodiment, the present invention is reduced Yulin coal ash of Yulin coal ash melting property temperature and does detailed description:
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 5% silica sand.
Embodiment 2
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 10% silica sand.
Embodiment 3
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 15% silica sand.
Embodiment 4
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 5% sand.
Embodiment 5
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 10% sand.
Embodiment 6
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 15% sand.
Embodiment 7
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 20% sand.
Embodiment 8
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weighs 30% sand.
Embodiment 9
Present embodiment Yulin coal ash comprises Yulin coal ash and accounts for coal ash and weigh 40% sand that concrete composition and weight percent are: SiO
235.73%, Al
2O
310.14%, Fe
2O
314.11%, CaO 22.44%, MgO3.08%, SO
38.89%, TiO
20.43%, K
2O 0.90%, Na
2O 2.14%, P
2O
50.03%.
The ash fusibility humid test result of Yulin of the present invention coal ash is as shown in table 1 below
The ash fusibility humid test result of table 1 Yulin of the present invention coal ash
| Project | Texturing temperature DT/ ℃ | Softening temperature ST/ ℃ | Yield temperature FT/ ℃ |
| Coal ash | 1220 | 1290 | 1310 |
| Silica sand/coal ash (5%) | 1170 | 1210 | 1230 |
| Silica sand/coal ash (10%) | 1160 | 1200 | 1220 |
| Silica sand/coal ash (15%) | 1160 | 1190 | 1210 |
| Sand | ＞1500 | ||
| Sand/coal ash (5%) | 1180 | 1220 | 1250 |
| Sand/coal ash (10%) | 1170 | 1190 | 1220 |
| Sand/coal ash (15%) | 1160 | 1180 | 1220 |
| Sand/coal ash (20%) | 1140 | 1160 | 1200 |
| Sand/coal ash (30%) | 1120 | 1140 | 1170 |
| Sand/coal ash (40%) | 1120 | 1130 | 1150 |
Can know by above experimental result, Yulin coal ash after the present invention improvement, its ash fusibility temperature decreases, and causes its viscosity-temperature characteristics curve to tend to be steady thus, specifically see shown in Figure 2, the viscosity-temperature curve of Yulin coal ash of Fig. 1 before for improvement.
Can know that from above-mentioned table 1 when adulterated sand in the coal ash of Yulin accounted for coal ash and weighs 5～10%, the texturing temperature of Yulin coal ash, softening temperature and yield temperature obviously reduced; When the proportion of sand greater than 10% the time, though texturing temperature and softening temperature decrease, still; Yield temperature no longer changes; And when the proportion of sand reached 20%～30%, texturing temperature, softening temperature and yield temperature decreased again, but when the proportion of sand is during 30%～40%; Texturing temperature no longer changes, and softening temperature and yield temperature decrease.
The above is merely one embodiment of the present invention; It or not whole or unique embodiment; The conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading specification sheets of the present invention is claim of the present invention and contains.
Claims (7)
1. Yulin coal ash that reduces Yulin coal ash melting property temperature; It is characterized in that: in the coal ash of Yulin, be doped with and account for Yulin coal ash and weigh 5～40% sand; This texturing temperature that is doped with Yulin coal ash of sand is 1120～1170DT/ ℃; Softening temperature is 1130～1210DT/ ℃, and yield temperature is 1150～1230DT/ ℃.
2. Yulin coal ash of the reduction Yulin coal ash melting property temperature described in claim 1, it is characterized in that: adulterated sand accounts for Yulin coal ash and weighs 5～10% in the coal ash of said Yulin.
3. Yulin coal ash of the reduction Yulin coal ash melting property temperature described in claim 1, it is characterized in that: adulterated sand accounts for Yulin coal ash and weighs 20～40% in the coal ash of said Yulin.
4. Yulin coal ash that reduces Yulin coal ash melting property temperature; It is characterized in that: in the coal ash of Yulin, be doped with and account for Yulin coal ash and weigh 5～15% silica sand; This texturing temperature that is doped with Yulin coal ash of silica sand is 1120～1170DT/ ℃; Softening temperature is 1130～1210DT/ ℃, and yield temperature is 1150～1230DT/ ℃.
5. Yulin coal ash of the reduction Yulin coal ash melting property temperature described in claim 4, it is characterized in that: adulterated silica sand accounts for Yulin coal ash and weighs 5～10% in the coal ash of said Yulin.
6. Yulin coal ash of the reduction Yulin coal ash melting property temperature described in claim 4, it is characterized in that: the composition and the weight percent of said Yulin coal ash are: SiO
235.73%, Al
2O
310.14%, Fe
2O
314.11%, CaO 22.44%, and MgO 3.08%, SO
38.89%, TiO
20.43%, K
2O 0.90%, Na
2O 2.14%, P
2O
50.03%.
7. according to Yulin coal ash of claim 4 or 5 described reduction Yulin coal ash melting property temperature, it is characterized in that: SiO in the said silica sand
2Content>=99%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103770669A CN102517123A (en) | 2011-11-24 | 2011-11-24 | Yulin coal ash with lowered fusion temperature |
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| CN2011103770669A CN102517123A (en) | 2011-11-24 | 2011-11-24 | Yulin coal ash with lowered fusion temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542820A (en) * | 2015-12-21 | 2016-05-04 | 神华集团有限责任公司 | Coal blending method for coal for gasification furnace |
| CN106062151A (en) * | 2013-12-27 | 2016-10-26 | 伊蒂股份有限公司 | Pressurized oxycombustion process |
| CN106520254A (en) * | 2016-11-27 | 2017-03-22 | 山西焦化股份有限公司 | Fluxing agent capable of reducing melting point of coal ash and improving viscosity-temperature characteristic of coal, and application thereof |
-
2011
- 2011-11-24 CN CN2011103770669A patent/CN102517123A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062151A (en) * | 2013-12-27 | 2016-10-26 | 伊蒂股份有限公司 | Pressurized oxycombustion process |
| CN106062151B (en) * | 2013-12-27 | 2018-04-20 | 伊蒂股份有限公司 | Pressurize oxygen-enriched combusting method |
| CN105542820A (en) * | 2015-12-21 | 2016-05-04 | 神华集团有限责任公司 | Coal blending method for coal for gasification furnace |
| CN105542820B (en) * | 2015-12-21 | 2018-06-26 | 神华集团有限责任公司 | A kind of blending method of gasification furnace coal |
| CN106520254A (en) * | 2016-11-27 | 2017-03-22 | 山西焦化股份有限公司 | Fluxing agent capable of reducing melting point of coal ash and improving viscosity-temperature characteristic of coal, and application thereof |
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Application publication date: 20120627 |