CN101168695A - Molded coal produced from slime and producing method thereof - Google Patents
Molded coal produced from slime and producing method thereof Download PDFInfo
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- CN101168695A CN101168695A CNA2007101396275A CN200710139627A CN101168695A CN 101168695 A CN101168695 A CN 101168695A CN A2007101396275 A CNA2007101396275 A CN A2007101396275A CN 200710139627 A CN200710139627 A CN 200710139627A CN 101168695 A CN101168695 A CN 101168695A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention relates to moulded coal produced by taking coal sludge as the raw material, and the moulded coal comprises coal washery sludge of 70 to 85 Wt percent, consolidation agent of 5 to 10Wt percent, desulfurizing agent of 3 to 5Wt percent, and water-proofing agent of 3 to 5Wt percent. The moulded coal takes the coal washery sludge of the prior coal washing plant as the main raw material, the auxiliary raw material of desulfurizing agent, etc. is added, and the coal sludge is made into environmental protection type solid fuel, thereby the environmental pollution is reduced, and the combustion efficiency is improved. The operation is convenient. The moulded coal produced by taking the coal sludge as the raw material has the advantages that the production process is simple, the coast is low, the moulded coal is molded by adopting a vacuum extruder, the production efficiency is high, the molding effect is good, and the breakage rate is low.
Description
Technical field
The present invention relates to a kind of solid fuel and production method thereof, refer to that specifically a kind of is the Type Coal And Its Production Methods of main raw material with the coal slime.
Background technology
At present, owing to becoming more meticulous with specialized of industrial coal, most of feed coals all will pass through washing, to adapt to customer requirements when output.In the raw coal washing process, can be settled out a large amount of coal slimes.These coal slimes are directly burnt as cheap domestic fuel.Owing to contain a large amount of objectionable impuritiess in the coal slime, in combustion processes, can cause very serious atmospheric pollution, coal slime often scatters in transportation simultaneously, also can form serious dust pollution.The at present existing technology report that uses coal slime to produce moulded coal, but great majority are that coal slime and coke powder or other fine coal are used, and the coal slime that digests is less.Chinese patent 2004100436214 disclosed " a kind of coal washing chamotte mould coal " adopts coal slime 5-9 part; Loess 1-2 part; Water 0.1-0.5 part.Stir the back extrusion molding.The moulded coal thermal value that this method is produced is low, and the pollutant component in the coal slime is not effectively eliminated, but adopts the mode of " dilution ", finally still enters atmosphere.Its harm to environment does not alleviate.
Summary of the invention
The present invention is directed to the problem that above-mentioned prior art exists, having proposed a kind of is the moulded coal of raw material production with the coal slime, the invention allows for the production method of above-mentioned moulded coal.
Of the present invention a kind of be the moulded coal of raw material production with the coal slime, it is characterized in that mainly comprising following component:
Coal washing mud 70-85Wt%; Solidifying agent 5-10Wt%; Sweetening agent 3-5Wt%;
Water-resisting agent 3-5Wt%
Described is the moulded coal of main material production with the coal slime, it is characterized in that described solidifying agent is magnesium chloride and/or magnesium oxide and/or sal epsom, and its content is 5-8Wt%; Described sweetening agent is a calcium lime powder; Described water-resisting agent is flyash and/or calcium phosphate; The content of described coal washing mud is 80-85Wt%.
Described is the moulded coal of raw material production with the coal slime, it is characterized in that described clay is a bentonite, and its content is 5-8Wt%.
Realizing above-mentioned is the method for the moulded coal of raw material production with the coal slime, it is characterized in that:
A, adopt Exposure to Sunlight or oven dry or seasoning method to make its water ratio reduce to 16-18% in coal washing mud;
B, the coal slime of getting the 70-85 weight part, the granularity of adding the 5-15 weight part is less than 50 purpose clays and fully stirring;
C, the water-resisting agent of solidifying agent 5-10 weight part, sweetening agent 3-5 weight part and 3-5 weight part is mixed and adds in the mixture of above-mentioned coal slime and clay, fully stirring.What obtain 100 weight parts is the moulded coal compound of main component with the coal slime;
D, above-mentioned moulded coal compound sent into extrusion molding in the die cavity of vacuum-extruder, squeeze pressure 2-2.5MPa, vacuum gauge pressure-0.09
After e, the demoulding seasoning to water ratio less than 7%.
Of the present invention is the moulded coal of raw material production with the coal slime, has added solidifying agent, sweetening agent, binding agent in raw material, has increased the intensity of moulded coal, makes moulded coal be difficult in the process breaking with moving in transportation.Add sweetening agent therein, reduced the discharging of moulded coal sulphur in combustion processes.Help reducing environmental pollution.Extrusion under vacuum is adopted in the production of moulded coal of the present invention, is beneficial to the degree of compactness and the intensity that improve moulded coal, helps enhancing productivity.
Embodiment
Below to of the present invention be that the moulded coal of raw material production is described in detail with the coal slime.
Moulded coal of the present invention is a main raw material with coal washery precipitation coal slime, adds the part clay as binding agent, and this clay component can adopt the common clay in the north to get final product, but best with the bentonite effect, particularly calcium magnesium base bentonite.Magnesium-containing compound such as magnesium oxide and/or magnesium chloride and/or sal epsom is beneficial to increase the intensity of moulded coal as solidifying agent, and is lower and be easy to get with magnesium oxide and sal epsom cost in the solidifying agent.Add water-resisting agent and particularly use flyash, can prevent that moulded coal from water after strain or defeated and dispersed, and cost is very low as water-resisting agent.Moulded coal behind the interpolation sweetening agent can reduce sulfur dioxide emissions largely.According to actual measurement, moulded coal of the present invention has reduced closely 90% under abundant combustion conditions during the purer coal combustion of the discharging of sulfurous gas, and its complete form of moulded coal burning back is easy to remove.
Of the present invention is the method for raw material production moulded coal with the coal slime, fairly simple, with the moisture in the coal slime through Exposure to Sunlight or air-dry or artificial seasoning when water ratio is 16-18%, add clay, clay wherein needs sieve through 50 mesh sieves.Calcium lime powder as sweetening agent also needed 50 mesh sieves, removed blocky-shaped particle wherein.Flyash directly adopts fly ash in electric power plant, and magnesium oxide, sal epsom, magnesium chloride then adopt the commercially available prod.Vacuum extruder can adopt DJZK40/40-25 single-stage vacuum extruder.
Embodiment 1
Get water ratio and be 80 tons of the coal slimes of 16-18, cross 7 tons of calcium magnesium base bentonites behind 50 mesh sieves, mix after stirrer fully stirs.Add 6 tons of industrial magnesium oxides then, 4 tons in flyash, 3 tons of calcium lime powders add 0.4 ton of commercially available CRM-6 moulded coal ignition dope through the stirrer secondary stirring in whipping process.With the compound input DJZK40/40-25 single-stage vacuum extruder after stirring, vacuum gauge pressure-0.09, squeeze pressure 2Mpa gets 100 tons of industrial shaping coals.Through seasoning to water ratio less than 7% o'clock, can dispatch from the factory.
Embodiment 2
70 tons of coal slimes, 10 tons of clays, each 5 tons in magnesium chloride and magnesium oxide, 5 tons in flyash, 5 tons of calcium lime powders, other parameter is identical with embodiment 1, through extrusion under vacuum, gets 100 tons of coals briquette for civillan use.
Embodiment 3 proportioning raw materials: 84 tons of coal slimes, 5 tons of calcium magnesium base bentonites, 5 tons in sal epsom, 3 tons in flyash, 3 tons of calcium lime powders, 0.6 ton of the logical moulded coal ignition dope of commercially available benefits, other parameter is identical with embodiment 1.Get 100 tons of normal-pressure boiler moulded coals through vacuum extrusion.
Embodiment 4
Proportioning raw materials: 70 tons of coal slimes, 15 tons of clays, 7 tons in magnesium oxide, 3 tons in flyash, 5 tons of calcium lime powders, other parameter is identical with embodiment 1, gets 100 tons of used for vegetable greenhouse moulded coals through vacuum extrusion.
Embodiment 5
Proportioning raw materials: 170 tons of coal slimes, 15 tons of bentonites, 11 tons in sal epsom, 7 tons in calcium phosphate, 9 tons of unslaked limes, 2.2 tons in potassium permanganate.Stir after water ratio being reached 17% coal slime and bentonite through screening mixing, the unslaked lime after will sieving then mixes with above-mentioned compound with sal epsom, calcium phosphate and continues stirring, adds potassium permanganate in whipping process.With the above-mentioned raw materials that stirs vacuum extruder extrusion molding.
Claims (5)
1. one kind is the moulded coal of raw material production with the coal slime, it is characterized in that mainly comprising following component:
Coal washing mud 70-85Wt%; Solidifying agent 5-10Wt%; Sweetening agent 3-5Wt%;
Water-resisting agent 3-5Wt%; Clay 5-15Wt%.
According to claim 1 be the moulded coal of main material production with the coal slime, it is characterized in that described solidifying agent is magnesium chloride and/or magnesium oxide and/or sal epsom, its content is 5-8Wt%; Described sweetening agent is a calcium lime powder; Described water-resisting agent is flyash and/or calcium phosphate; The content of described clay is 5-10Wt%; The content of described coal washing mud is 80-85Wt%.
According to claim 1 be the moulded coal of raw material production with the coal slime, it is characterized in that described clay is a bentonite, its content is 5-8Wt%.
According to claim 1,2 or 3 be the moulded coal of raw material production with the coal slime, it is characterized in that wherein containing the ignition dope of 0-1Wt%.
One kind realize among the claim 1-4 each described be the method for the moulded coal of raw material production with the coal slime, it is characterized in that:
A, adopt Exposure to Sunlight or oven dry or seasoning method to make its water ratio reduce to 16-18% in coal washing mud;
B, the coal slime of getting the 70-85 weight part, the granularity of adding the 5-15 weight part is less than 50 purpose clays and fully stirring;
C, the water-resisting agent of solidifying agent 5-10 weight part, sweetening agent 3-5 weight part and 3-5 weight part is mixed and adds in the mixture of above-mentioned coal slime and clay, fully stirring.What obtain 100 weight parts is the moulded coal compound of main component with the coal slime;
D, above-mentioned moulded coal compound sent into extrusion molding in the die cavity of vacuum-extruder, squeeze pressure 2-2.5MPa, vacuum gauge pressure-0.09
After e, the demoulding seasoning to water ratio less than 7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101396275A CN101168695A (en) | 2007-10-26 | 2007-10-26 | Molded coal produced from slime and producing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101396275A CN101168695A (en) | 2007-10-26 | 2007-10-26 | Molded coal produced from slime and producing method thereof |
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| CN101168695A true CN101168695A (en) | 2008-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101396275A Pending CN101168695A (en) | 2007-10-26 | 2007-10-26 | Molded coal produced from slime and producing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2495092C1 (en) * | 2012-05-18 | 2013-10-10 | Айтбер Махачевич Бижанов | Extrusion-type fuel briquette (brex) |
| CN103555383A (en) * | 2013-11-13 | 2014-02-05 | 河南理工大学 | Process of directly forming and utilizing coal slime of coal cleaning plant |
| CN103865603A (en) * | 2014-02-27 | 2014-06-18 | 单台阶 | Briquette coal for vertical industrial kiln and preparation method thereof |
| CN104774667A (en) * | 2015-03-25 | 2015-07-15 | 张春山 | Moulded coal binder and preparation method thereof |
| CN105296045A (en) * | 2015-11-23 | 2016-02-03 | 广西金壮锦节能技术有限公司 | High viscosity briquette waterproof composite binder |
| CN109181801A (en) * | 2018-10-19 | 2019-01-11 | 内蒙古昕昊环保能源有限责任公司 | A kind of moulded coal raw material and moulded coal |
| CN110885693A (en) * | 2019-12-05 | 2020-03-17 | 吉林省电力科学研究院有限公司 | Coal slime airing method |
-
2007
- 2007-10-26 CN CNA2007101396275A patent/CN101168695A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2495092C1 (en) * | 2012-05-18 | 2013-10-10 | Айтбер Махачевич Бижанов | Extrusion-type fuel briquette (brex) |
| CN103555383A (en) * | 2013-11-13 | 2014-02-05 | 河南理工大学 | Process of directly forming and utilizing coal slime of coal cleaning plant |
| CN103555383B (en) * | 2013-11-13 | 2015-06-10 | 河南理工大学 | Process of directly forming and utilizing coal slime of coal cleaning plant |
| CN103865603A (en) * | 2014-02-27 | 2014-06-18 | 单台阶 | Briquette coal for vertical industrial kiln and preparation method thereof |
| CN104774667A (en) * | 2015-03-25 | 2015-07-15 | 张春山 | Moulded coal binder and preparation method thereof |
| CN105296045A (en) * | 2015-11-23 | 2016-02-03 | 广西金壮锦节能技术有限公司 | High viscosity briquette waterproof composite binder |
| CN109181801A (en) * | 2018-10-19 | 2019-01-11 | 内蒙古昕昊环保能源有限责任公司 | A kind of moulded coal raw material and moulded coal |
| CN110885693A (en) * | 2019-12-05 | 2020-03-17 | 吉林省电力科学研究院有限公司 | Coal slime airing method |
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Open date: 20080430 |