CN102504904A - Method for producing coal briquettes - Google Patents
Method for producing coal briquettes Download PDFInfo
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- CN102504904A CN102504904A CN 201110394605 CN201110394605A CN102504904A CN 102504904 A CN102504904 A CN 102504904A CN 201110394605 CN201110394605 CN 201110394605 CN 201110394605 A CN201110394605 A CN 201110394605A CN 102504904 A CN102504904 A CN 102504904A
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- Prior art keywords
- sticker
- coal
- water
- moulded coal
- potato flour
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Abstract
The invention relates to a method for producing coal briquettes, which includes steps: pulverizing coal or coke into particles at least 6mm in size; well mixing the pulverized coal powder or coke powder and binder according to a proportion 3:8; feeding the mixture into a press for pressing; and dewatering and solidifying formed briquettes. The method is characterized in that the binder is paste made mainly from residue of tubers with starch extracted, and the binder at least contains tuber residue powder, water and trace acid or alkali.
Description
Technical field
The invention belongs to solid-fuelled preparation method, be specifically related to preparation method with the moulded coal of sticker moulding by means of the sticker moulding.
Background technology
In moulded coal was made, the performance of sticker and briquet quality had very confidential relation, and pitch is the sticker of using always; But can generate benzopyrene during its burning, cause secondary pollution, and cost be also high; DP DE0.106.163 makes sticker with spent pulping liquor, though low price.But moisture absorption is strong, the moulded coal of processing make moist the back downgrade, be immersed in water coal dust.Openly specially permit clear employing α starch, CMC and acetate ethylene copolymer and make sticker, the moulded coal of processing can be moistureproof, but expensive raw material price.
Summary of the invention
The object of the present invention is to provide that a kind of sticker raw material sources are wide, cost is low, the preparation method of the moulded coal of the good product performance of processing.
For achieving the above object, the present invention provides a kind of method for preparing moulded coal, may further comprise the steps: with at least 6 millimeters of coal or coke pulverizing values; Above-mentioned coal dust or coke powder and sticker after crushed by 3: 8 mixed, stir; Said mixture is sent into compression moulding in the forming press; Moulded coal dehydration after the moulding, unity; It is characterized in that described sticker be a kind of be the mashed prod that major ingredient is processed with the potato flour dregs that extracts behind the starch; This granulated slag pasty adhesive includes potato flour dregs powder, water and a spot of acid or alkali at least, and the content range of above-mentioned component (mass percent) is:
Potato flour dregs powder (butt) 20-40,
Water 40-75,
Acid or alkali 0.3-0.6,
Coal dust 70-80
Sticker 6-17.
Compared with present technology, great advantage of the present invention is to select for use the main raw material of potato flour dregs as sticker, not only can process good moulded coal; And because aboundresources, inexpensive; Greatly reduce the cost of moulded coal, good in economic efficiency, thus make the moulded coal industriallization become possibility.Add an amount of spent pulping liquor, both can obtain superior in quality moulded coal, spent pulping liquor capable of using again to the pollution of environment, turns bane into boon when reducing its direct discharging.
Embodiment
The present invention is described further with following embodiment: forming pressure: 300kg/cm
2Dehydrate: 80 ℃ 1 hour, 140 ℃ 1 hour.
The moulded coal preparation method is to be raw material with coal or coke, makes it to be able to the method for moulding by means of the adhesive effect of sticker, may further comprise the steps:
Coal or coke powder are broken to less than 3 millimeters,
Above-mentioned coal dust or coke powder after crushed mixes by a certain percentage, stirs with sticker,
Said mixture is sent into compression moulding in the shaper,
Moulded coal dehydration after the moulding, unity,
It is characterized in that described sticker be a kind of be the mashed prod that major ingredient is processed with the potato flour dregs that extracts behind the starch; This granulated slag adhesive paste includes potato flour dregs powder, water and acid or alkali at least, and the content range of said components (mass percent) is:
Potato flour dregs powder (butt) 10-30,
Water 50-85,
Acid or alkali 0.1-0.5,
The proportioning of coal or coke and sticker (mass percent) is:
Coal dust or coke powder 80-90
Sticker 10-20
The potato flour dregs pasty adhesive can be by the preparation of following method: the granulated slag that will extract behind the starch is worn into the meal less than 20 mesh sieves through being dried to water content after less than 20%; Mix with the NAOH solution of the 0.3-1.0% (weight) of 2-7 part weight by the granulated slag of a weight, be heated to 55-65 ℃ of about 5-10 minute one-tenth pasty state while stirring.Perhaps the granulated slag of 1 part of weight mixes with the water of 3-6 part weight, be heated to while stirring became pasty state in 55-65 ℃ of about 5-10 minute after, add the heavy vitriol oil of 0.01-0.06 part again, and stir.Also available other mineral alkali of the NAOH wherein and the vitriol oil and acid substitution.
Potato flour dregs can be selected the potato granulated slag for use, also can be the Ipomoea batatas granulated slag, and raw material resources are abundant, and cost is low, the sticker for preparing as stated above, and cohesive force is strong, and prepared briquette strength is high, hydrophobicity is good.
In above-mentioned potato flour dregs sticker, can also add 0.5-2.0 part (in 1 part of weight granulated slag) about 1: 16 spent pulping liquor of proportion,, have intensity, thermostability and hydrophobicity preferably equally with the moulded coal that this sticker is processed.
To the pollution of environment, the present invention added the lime of 2-6% (by weight of binder) as sulphur-fixing agent when an amount of sulphur-fixing agent of adding can reduce the moulded coal burning in above-mentioned sticker.
Water-content in the above-mentioned sticker does not comprise the water cut in the spent pulping liquor.
Moulded coal preparation method of the present invention can be that the boiler briquette of raw material can be that moulded coal is used in the gas making of raw material in order to preparation hard coal, coke powder also with bituminous coal in order to preparation not only.
The water-content of raw material coal dust or coke powder generally should be in 5%.
The moulding of the mixture of sticker that mixes and coal dust or coke powder can be selected any prior art for use, and it is 200-300kg/cm that the present invention selects forming pressure for use
2Roller briquetting machine compression moulding, then can be in 110-150 ℃ dryer the dry 1-2 hour water-content to the moulded coal get final product less than 2.5%.
Claims (4)
1. method for preparing moulded coal may further comprise the steps: with at least 6 millimeters of coal or coke pulverizing values; Above-mentioned coal dust or coke powder and sticker after crushed by 3: 8 mixed, stir; Said mixture is sent into compression moulding in the forming press; Moulded coal dehydration after the moulding, unity; It is characterized in that described sticker be a kind of be the mashed prod that major ingredient is processed with the potato flour dregs that extracts behind the starch; This granulated slag pasty adhesive includes potato flour dregs powder, water and a spot of acid or alkali at least, and the content range of above-mentioned component (mass percent) is:
Potato flour dregs powder (butt) 20-40,
Water 40-75,
Acid or alkali 0.3-0.6,
Coal dust 70-80
Sticker 6-17.
2. the method for preparing moulded coal as claimed in claim 1 is characterized in that the compositing range (mass percent) of described sticker is:
Potato flour dregs powder (butt) 14-30,
Water 70-85,
NAOH or dense H2SO4 0.2-1.5.
3. the method for preparing moulded coal as claimed in claim 1 is characterized in that the compositing range (mass percent) of described sticker is:
Potato flour dregs powder (butt) 10-25,
Water 50-80,
NAOH or dense H2SO4 0.1-0.2,
Spent pulping liquor (about 1: 16 of proportion) 5-35.
4. like claim 2 or the 3 described methods that prepare moulded coal, it is characterized in that adding again in addition in the described sticker lime of 6-8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110394605 CN102504904A (en) | 2011-12-02 | 2011-12-02 | Method for producing coal briquettes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110394605 CN102504904A (en) | 2011-12-02 | 2011-12-02 | Method for producing coal briquettes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102504904A true CN102504904A (en) | 2012-06-20 |
Family
ID=46217041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110394605 Pending CN102504904A (en) | 2011-12-02 | 2011-12-02 | Method for producing coal briquettes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102504904A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628189A (en) * | 2018-12-28 | 2019-04-16 | 陕西煤业化工新型能源有限公司 | A kind of moulded coal and preparation method thereof and preparation system |
| CN110536955A (en) * | 2017-04-28 | 2019-12-03 | 乐天精密化学株式会社 | Moulded coal composition and moulded coal comprising it |
| CN112410092A (en) * | 2020-11-13 | 2021-02-26 | 新奥科技发展有限公司 | Semicoke treatment method and application thereof |
| CN115368945A (en) * | 2022-08-26 | 2022-11-22 | 榆林学院 | Briquette prepared from gasified fine slag, semi-coke powder and biomass binder and preparation method thereof |
-
2011
- 2011-12-02 CN CN 201110394605 patent/CN102504904A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110536955A (en) * | 2017-04-28 | 2019-12-03 | 乐天精密化学株式会社 | Moulded coal composition and moulded coal comprising it |
| CN109628189A (en) * | 2018-12-28 | 2019-04-16 | 陕西煤业化工新型能源有限公司 | A kind of moulded coal and preparation method thereof and preparation system |
| CN112410092A (en) * | 2020-11-13 | 2021-02-26 | 新奥科技发展有限公司 | Semicoke treatment method and application thereof |
| CN115368945A (en) * | 2022-08-26 | 2022-11-22 | 榆林学院 | Briquette prepared from gasified fine slag, semi-coke powder and biomass binder and preparation method thereof |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |