CN101555427A - High thermal stability synthetic ammonia gasification moulded coal and preparation method thereof - Google Patents
High thermal stability synthetic ammonia gasification moulded coal and preparation method thereof Download PDFInfo
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- CN101555427A CN101555427A CNA2009100744345A CN200910074434A CN101555427A CN 101555427 A CN101555427 A CN 101555427A CN A2009100744345 A CNA2009100744345 A CN A2009100744345A CN 200910074434 A CN200910074434 A CN 200910074434A CN 101555427 A CN101555427 A CN 101555427A
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Abstract
The invention provides a high thermal stability synthetic ammonia gasification moulded coal, which is made from the following components by weight: 76.0-84.7 of anthracite powder, 0.3-1.0 of added modified starch, 4-10 of fat coal powder processed by low temperature carbonization and 11-13 of water. Due to the added modified starch, the synthetic ammonia gasification moulded coal effectively enhances the cold strength of moulded coal and effectively improves the thermal stability of moulded coal with the added fat coal processed by low temperature carbonization.
Description
Technical field
The present invention relates to a kind of gas-making type coal, specifically belong to a kind of synthesis ammonia gas preparation molded coal and preparation method thereof.
Background technology
Along with the continuous development of Coal Mechanical exploitation, the output of lump coal is more and more lower, and is especially for the high-quality anthracite piece shortage especially of fertilizer plant's gas making, on the high side.At present, fertilizer plant generally adopts coal powder formation to make moulded coal as synthetic ammonia feedstock in order to save production cost, and additive adopts sodium humate solution mostly, is pressed into coal briquette or coal rod through height again with pulverized anthracite mix, the system that stirs, macerates, and the oven dry fed to boiler uses.
Though the moulded coal that above method is made has must cold strength, but hot strength is generally lower, the thermostability of moulded coal is meant moulded coal degree of stability to heat in high-temp combustion process or gasification, just moulded coal keeps the character of original granularity under high temperature action, poor heat stability causes the stove that collapses easily, can influence factor of created gase, reduce gas production rate.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can effectively strengthen the hot and cold intensity of moulded coal, improve synthesis ammonia gas preparation molded coal of thermostability and preparation method thereof.
A kind of high thermal stability synthetic ammonia gasification moulded coal provided by the invention, Ji following component is made by weight: pulverized anthracite 76.0-84.7, treated starch 0.3-1.0 is through the rich coal powder 4-10 of low-temperature pyrolysis, water 11-13.Described treated starch is modified corn starch or modified potato starch.
The preparation method of a kind of high thermal stability synthetic ammonia gasification moulded coal provided by the invention comprises the steps:
(1) pulverized anthracite is broken to below the 3mm;
(2) with rich coal destructive distillation 30 minutes under 450 ℃ of conditions, be crushed to below the 1mm;
(3) get pulverized anthracite, destructive distillation rich coal powder, treated starch and water in proportion, mixing was placed 1-2 hour;
(4) dry after the material coldmoulding with mixing, promptly get product.
Compared with prior art, the invention has the advantages that:
The present invention utilizes treated starch as briquette binder, and addition is few, and cost is low, can effectively strengthen the moulded coal cold strength, and can not increase the moulded coal ash content, can not reduce the moulded coal carbon content.
Plastic mass in the coal (thickness of colloidal matter layer is the Y value) can effectively strengthen the moulded coal hot strength, and the thickness of colloidal matter layer of rich coal is that the Y value is very high, adds in right amount in making the gas-making type coal process, can effectively strengthen the moulded coal hot strength, improves the moulded coal thermostability.The present invention is earlier with the low-temperature pyrolysis of rich coal process, volatile matter in the rich coal is discharged, and don't damage gelatinous layer, and then as the moulded coal hot-setter, so not only can improve the moulded coal thermostability, and can significantly reduce the volatile matter of gas-making type coal, and avoid the infringement of tarry cut to system, improve gas forming amount.
The gas-making type coal that utilizes the present invention to make can significantly strengthen the hot and cold intensity of moulded coal, improves thermostability, increases gas production rate.
Embodiment
Embodiment 1
Select Ningwu, Shanxi rich coal for use, the secluding air destructive distillation is 30 minutes under 450 ℃ of conditions, is crushed to below the 1mm.With 7.8 kilograms in Jincheng hard coal, 0.05 kilogram of modified corn starch, 0.95 kilogram of the rich coal of destructive distillation, 1.2 kilograms in water, the aftershaping that stirs, 150 ℃ of oven dry down.The index of utilizing XY-01 type moulded coal pressure detecting instrument, CTM300 type intelligence electrothermal oven and PTC-2 type ash fusion point tester to detect finished product is:
Ultimate compression strength: the 90kg/ ball, hot strength: the 47kg/ ball, thermostability: 84%, ash fusion point T
2: 1311 ℃.
Embodiment 2
Select Pu County, Shanxi rich coal for use, the secluding air destructive distillation is 30 minutes under 450 ℃ of conditions, is crushed to below the 1mm.With 8.2 kilograms in Jincheng hard coal, 0.08 kilogram of modified potato starch, 0.57 kilogram of the rich coal of destructive distillation, 1.15 kilograms in water, the aftershaping that stirs, 150 ℃ of oven dry down.The index of utilizing XY-01 type moulded coal pressure detecting instrument, CTM300 type intelligence electrothermal oven and PTC-2 type ash fusion point tester to detect finished product is:
Ultimate compression strength: the 86kg/ ball, hot strength: the 51kg/ ball, thermostability: 87%, ash fusion point T
2: 1298 ℃.
Claims (3)
1, a kind of high thermal stability synthetic ammonia gasification moulded coal is characterized in that, Ji following component is made by weight: pulverized anthracite 76.0-84.7, treated starch 0.3-1.0 is through the rich coal powder 4-10 of low-temperature pyrolysis, water 11-13.
2, by the described a kind of high thermal stability synthetic ammonia gasification moulded coal of claim 1, it is characterized in that described treated starch is modified corn starch or modified potato starch.
3, by the preparation method of the described a kind of high thermal stability synthetic ammonia gasification moulded coal of claim 1, it is characterized in that comprising the steps:
(1) pulverized anthracite is broken to below the 3mm;
(2) with rich coal destructive distillation 30 minutes under 450 ℃ of conditions, be crushed to below the 1mm;
(3) get pulverized anthracite, destructive distillation rich coal powder, treated starch and water in proportion, mixing was placed 1-2 hour;
(4) with the material coldmoulding of mixing, oven dry promptly gets product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100744345A CN101555427B (en) | 2009-05-20 | 2009-05-20 | High thermal stability synthetic ammonia gasification moulded coal and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100744345A CN101555427B (en) | 2009-05-20 | 2009-05-20 | High thermal stability synthetic ammonia gasification moulded coal and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101555427A true CN101555427A (en) | 2009-10-14 |
| CN101555427B CN101555427B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100744345A Active CN101555427B (en) | 2009-05-20 | 2009-05-20 | High thermal stability synthetic ammonia gasification moulded coal and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839029A (en) * | 2012-09-17 | 2012-12-26 | 韩维国 | Method for manufacturing anthracite block coal through bituminous coal |
| CN109971524A (en) * | 2019-04-09 | 2019-07-05 | 武威市型形煤化有限责任公司 | A kind of is made the clean moulded coal and preparation method thereof of binder of starch |
| CN110272773A (en) * | 2019-07-05 | 2019-09-24 | 山西大学 | Civilian high-intensitive solid sulphur formed coal of one kind and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127553C (en) * | 1999-12-22 | 2003-11-12 | 葛立奎 | Method for producing formed coke by using low-ash high-volatile long-flame coal |
| CN1445342A (en) * | 2002-03-20 | 2003-10-01 | 艾绍奎 | Method for preparing industrialized gasified coal by dry distilling inadhesion soft coal at low temperature |
-
2009
- 2009-05-20 CN CN2009100744345A patent/CN101555427B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839029A (en) * | 2012-09-17 | 2012-12-26 | 韩维国 | Method for manufacturing anthracite block coal through bituminous coal |
| CN102839029B (en) * | 2012-09-17 | 2014-07-09 | 三门峡中兴节能环保科技有限公司 | Method for manufacturing anthracite block coal through bituminous coal |
| CN109971524A (en) * | 2019-04-09 | 2019-07-05 | 武威市型形煤化有限责任公司 | A kind of is made the clean moulded coal and preparation method thereof of binder of starch |
| CN110272773A (en) * | 2019-07-05 | 2019-09-24 | 山西大学 | Civilian high-intensitive solid sulphur formed coal of one kind and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101555427B (en) | 2012-05-23 |
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