CN1680518A - Extra fine mud fuel and production thereof - Google Patents
Extra fine mud fuel and production thereof Download PDFInfo
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- CN1680518A CN1680518A CN 200410017577 CN200410017577A CN1680518A CN 1680518 A CN1680518 A CN 1680518A CN 200410017577 CN200410017577 CN 200410017577 CN 200410017577 A CN200410017577 A CN 200410017577A CN 1680518 A CN1680518 A CN 1680518A
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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
- Y02E50/10—Biofuels, e.g. bio-diesel
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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 provided a superfine mud and its producing method. The mud content: (a) 30-80 weight parts of hydrous mud; (b) 0.001-50 weight parts of coal powder; (c) 10-70 weight parts of fuel oil. The average diameter of the solid is little than 20um. The fuel is a low cost and clean fuel.
Description
Technical field
The present invention relates to environment protection and fuel manufacture field, relate more specifically to a kind of superfine mud and production method thereof.
Background technology
Municipal sewage plant's mud that forms of disposing of sewage contains a large amount of flammable organic substances, also contains deleterious organism and a large amount of pathogenic agent and some heavy metals simultaneously, therefore needs special the processing.
With the method for landfill handle these sewage sludges in the North America, Europe and Japan has been under an embargo or has been about to and be under an embargo.Mud uses as compost also will progressively be forbidden by legislation, because the fundamentally decontamination of these methods.Landfill can make heavy metal element and the detrimental substance osmosis pollution underground water with surface water, and as fertilizer sources uses, and the heavy metal element in the mud can be by plant absorbing, and then enters in animal and human's the body.
Another approach of handling mud is to burn, and is widely used at present.But the method for traditional burning has various shortcomings.Main shortcoming wherein is mud and auxiliary fuel incomplete combustion, still has pollutant emission, and for example, the dioxin compounds with strong carcinogenesis all has existence in general incinerator stack gas, and the heavy metal in the lime-ash still might contaminate environment.
In order to realize clean-burning purpose, existing multiple mud is changed into the technology of fuel, comprising:
(1) mechanical dehydration mud (moisture between 30%～90%, mostly between 50%～80%) is mixed with powdery coal and certain quantity of additive, drying adds and is pressed into moulded coal.For example, Chinese patent application 02133390.4, Chinese patent application 00123028.X, Chinese patent application 99112394.8, Chinese patent application 94112288.3, etc.The advantage of these class methods is that technology is simple, and facility investment is few, and cost is low.But solid coal briquette is difficult to burning fully, and utilization rate of heat value is low, and the heavy metal in the lime-ash is difficult to handle.
(2) dewatered sludge is mixed with the powdery coal, be dried to granular fuel, can be used as the power station auxiliary fuel through extruding pelletization.As European patent application EP 0643124A1, United States Patent (USP) 05797972A, United States Patent (USP) 05711768A, Japanese Patent (publication number) 59170198 A, Japanese Patent (publication number) 60082192 A etc.The advantage of these class methods is that fuel value is higher, but drying process needs the many equipment and the energy, has significantly improved production cost.
(3) dewatered sludge is further dehydrated after, be ground into pulverized fuel, as boiler oil, as patent EP0496290A2, Japanese Patent (publication number) 2001300590 A etc.The advantage of these class methods is that process is simple, but sludge-drying needs many heat energy, has improved cost, and simple sludge fuel calorific value is lower.
(4) dewatered sludge is mixed back secluding air heat with coal dust, the degassing, preparation synthetic gas, fuel gas, remaining solid still contains flammable carbide, and can be used as propellant combination after other fuel mix and uses.As patent DE 19925565A1, US4378229A, US 05211723A, US 05217625, Chinese patent application 99814537.8, Chinese patent application 93101893.5, patent DE 3640181A1, Japanese Patent (publication number) JP10113697 19980506 etc.This class methods process complexity needs equipment more, and cost is too high.
(5) with dewatered sludge with after solid carbon fuel (as coal) and liquid carbon-containing fuel (as oil) mix, the heat gas making or the use that directly acts as a fuel.As US05788721A, EP01112971A1, Japanese Patent (publication number) JP 11,005,100 19990112, Japanese Patent (publication number) JP 10,328,698 19981215, Japanese Patent (publication number) 06246297A, Japanese Patent (publication number) 2000176490 A, Japanese Patent (publication number) 2000271599 A, Japanese Patent (publication number) 56056283 A etc.The shortcoming of these class methods is identical with (4) class methods, and equipment is many and complicated, the cost height.
In addition, above-mentioned (1) is solid part in the fuel to the common drawback of the method for (5), and particle is too thick, nonflammable fully, the pollutent in the stack gas is still more, does not realize cleanburning.Sometimes in order to make mixture fuel slurry stable, also to add stablizer, as Japanese Patent (publication number) 55139494 A, Japanese Patent (publication number) 55139495 A and Japanese Patent (publication number) 55142092 A etc.
In sum, in order to handle wastewater sludge effectively, this area presses for the new burning cleaning of exploitation, and sludge fuel with low cost with and preparation method thereof.
Summary of the invention
It is clean that purpose of the present invention just provides a kind of burning, and sludge fuel with low cost with and preparation method thereof.
In a first aspect of the present invention, a kind of sludge fuel is provided, it contains:
(a) water-containing sludge of 30-80 parts by weight;
(b) coal dust of 0.001-50 parts by weight;
(c) oil fuel of 10-70 parts by weight;
Wherein, the median size of solid particulate is below 20 microns.
In another preference, the median size of described solid particulate is the 0.1-20 micron.
In another preference, the median size of described solid particulate is the 0.5-10 micron.
In another preference, the water content of described water-containing sludge is 30-90wt%.
In another preference, the butt calorific value of described water-containing sludge is 2000 kilocalorie/kilograms～3500 kilocalorie/kilograms.
In another preference, described water-containing sludge is selected from down group: the domestic sludge that city domestic sewage treatment plant produces, paper mill effluent are handled the paper plant's mud that produces, industrial sludge, the greasy dirt that industrial enterprise's sewage disposal produces, or its mixture.
In another preference, described coal dust is selected from down group: the refuse coal after brown coal, bituminous coal and hard coal, coke, breeze, clean fine coal and the washing, or its mixture.
In another preference, described oil fuel is selected from down group: diesel oil, heavy gas oil, heavy oil, residual oil, petroleum crude oil, consistency crude oil, shale oil, refinery coke, petroleum pitch, coal tar, fuel oil waste, waste edible oil, useless technical oils, polymer substance cracked oil or its mixture.
In another preference, also contain sweetening agent, the consumption of described sweetening agent is to make the grammeatom ratio of calcium in the sweetening agent or the sulphur in magnesium and the fuel between 1.0: 1～6: 1.
In a second aspect of the present invention, a kind of preparation method of sludge fuel is provided, this method may further comprise the steps:
(i) with the water-containing sludge of (a) 30-80 parts by weight, the coal dust and (c) the oil fuel mixing of 10-70 parts by weight of (b) 0.001-50 parts by weight, form raw mix,
(ii) raw mix is ground, the median size that makes the solid particulate in the fuel is below 20 microns, thereby obtains the sludge fuel of pulp-like;
Perhaps the method comprising the steps of:
With the coal dust of water-containing sludge (b) the 0.001-50 parts by weight of (a) 30-80 parts by weight and (c) oil fuel of 10-70 parts by weight send into grinding plant simultaneously and grind, the median size that makes the solid particulate in the fuel is below 20 microns, thereby obtains the sludge fuel of pulpous state.
Embodiment
The inventor is the extensive studies discovery through going deep into: water-containing sludge, coal dust and oil fuel are mixed the raw mix that forms, behind extra-fine grinding and homogeneous, when the median size of solid particulate is below 20 microns the time, forming a kind of is that external phase, mud and coal dust are the pulpous state fuel of the novel texture of disperse phase with oil.In this pulpous state fuel,, be evenly distributed, so pulpous state fuel is highly stable because particle is fine.Owing to have oil film to separate mutually between the superfine particulate matter in the fuel, be easy to aerosol dispersion again, make burning very complete, the carbon monoxide in the stack gas, do not fire clean carbon granule and significantly reduce.Its slag fused has prevented that heavy metal from leaching the formation secondary pollution, so this pulpous state fuel is a kind of clean fuel with the heavy metal bag within it.Finished the present invention on this basis.
As used herein, term " fuel of the present invention ", " fuel composition of the present invention ", " sludge fuel of the present invention ", " sludge fuel composition of the present invention " interchangeable using, all refer to contain water-containing sludge, coal dust and oil fuel, and the median size of solid particulate is the raw mix that reaches below 20 microns.
Superfine mud of the present invention contains water-containing sludge and the coal and the oil fuel of sewage work, and wherein, oil is external phase, and mud and the water that includes thereof and coal dust are disperse phase.The contained solids median size of fuel is below 20 microns, preferably below 10 microns, more preferably below 5 microns.Because water-containing sludge contains 30%～90% water, so, containing a certain amount of water in the superfine mud of the present invention, the existence of water can improve burning, make the carbon granule after-flame that organic cracking forms in carbon granule in the fuel and the combustion processes, realized the perfect combustion of fuel.
Water-containing sludge
Can be used for water-containing sludge of the present invention is not particularly limited.Representational example comprises (but being not limited to): the domestic sludge that city domestic sewage treatment plant produces, paper mill effluent are handled paper plant's mud, industrial sludge, the greasy dirt that industrial enterprise's sewage disposal produces, the perhaps mixture of various mud that produces.
These several mud are moisture generally between 30%～90%, and are most between 50%～80%.One of the present invention is different with existing technology is that water-containing sludge does not need further drying, so not only saves the dry required energy, and, also save dry required equipment, significantly reduced production cost.
Usually, the butt calorific value of these mud is between 2000 kilocalorie/kilograms～3500 kilocalorie/kilograms, and is most about 3000 kilocalorie/kilograms.These mud contain more organic volatile composition, and carbon containing is less, and volatile component is between 40%～80% in the combustiblematerials.
The consumption of the water-containing sludge in the superfine mud of the present invention can be between 30%～80%, generally between 40%～60%, by the gross weight of fuel mud.If represent with parts by weight, the consumption of water-containing sludge can be between 30～80 parts by weight, generally between 40～60 parts by weight.
Coal dust
Can be used for coal of the present invention and be not particularly limited, as long as it is the powdery coal.Representational example comprises (but being not limited to): the coal that the refuse coal after brown coal, bituminous coal and hard coal, coke, breeze, clean fine coal and the washing etc. are low-grade, the perhaps mixture of above-mentioned coal.
The consumption of coal dust of the present invention can be between 0.001～50%, generally between 15%～40%, by the gross weight of fuel mud.If represent with parts by weight, the consumption of coal dust can be between 0.001～50 parts by weight, generally between the 15-40 parts by weight.When the butt calorific value of water-containing sludge is high especially, when perhaps fuel oil content is higher, also can not add coal dust.
Oil fuel
Can be used for oil fuel of the present invention and be not particularly limited, representational example comprises (but being not limited to): diesel oil, heavy gas oil, heavy oil, residual oil, petroleum crude oil, consistency crude oil, shale oil, refinery coke, petroleum pitch, coal tar, fuel oil waste, waste edible oil, useless technical oils, polymer substance cracked oil.It can also be above-mentioned two or more oily mixture.
The consumption of oil fuel of the present invention can be between 10%～70%, generally between 20%～50%, by the gross weight of fuel mud.If represent with parts by weight, the consumption of oil fuel can be between 10～70 parts by weight, generally between 20～50 parts by weight.
Extra composition
The additive that in sludge fuel of the present invention, also can add various routines, for example sweetening agent etc.The content of these additional additive can be conventional amount used, is generally the 0.1-10 parts by weight, preferably is the 0.2-6 parts by weight.
The sweetening agent that adds in the sludge fuel production process can be that Wingdale, rhombspar and lime and other contain the organic or inorganic material of calcium or magnesium or the mixture of these materials.Sweetening agent described in the present invention can be (as the sweetening agent of mean particle size greater than 20 microns) that does not pass through extra-fine grinding, but preferred sweetening agent is through extra-fine grinding, its mean particle size can further improve sulfur limitation effect like this at the sweetening agent below 20 microns.Still can use lime white as sweetening agent.
The consumption of sweetening agent is controlled at the grammeatom ratio of calcium in the sweetening agent or the sulphur in magnesium and the fuel (as calcium: sulphur) between 1.0: 1～6: 1, calcium preferably: sulphur is between 3.0: 1～5: 1 among the present invention.
When adding sweetening agent, the most of sulphur in the fuel is cured in the lime-ash with the form of vitriol and sulphite in combustion processes, thereby significantly reduces the discharging of sulfur dioxide of flue gases.
The preparation method
The present invention also provides the production method of ultra-fine sewage sludge fuel.
The production method of sludge fuel of the present invention comprises step:
(i) with the oil fuel of the coal dust of the water-containing sludge of (a) 30-80 parts by weight, (b) 0.001-50 parts by weight, (c) 10-70 parts by weight and (d) optional extra composition (as sweetening agent) mix, form raw mix,
(ii) raw mix is ground, the median size that makes the solid particulate in the fuel is below 20 microns, thereby obtains the sludge fuel of pulp-like.
In another preference, the method comprising the steps of: with the coal dust of water-containing sludge (b) the 0.001-50 parts by weight of (a) 30-80 parts by weight and (c) oil fuel of 10-70 parts by weight send into grinding plant simultaneously and grind, the median size that makes the solid particulate in the fuel is below 20 microns, thereby obtains the sludge fuel of pulpous state.
Abrasive method is not particularly limited, and can be existing extra-fine grinding in this area or breaking method, as long as it can make the particle diameter of the solids in the fuel reach desired size.
In a preference of the present invention, be water-containing sludge, coal dust and oil fuel to be joined the rotary pulsive superfine powder mixing grinder (hereinafter to be referred as " mixed super grinder ") that Shanghai Fine Powder Dissolved Machinery EquipmentCo.ltd produces according to a certain percentage (Chinese patent application number: mixing extra-fine grinding 01109394.3) becomes pulpous state fuel, makes the solid grain size in the fuel reach required size.
When feedstock composition is milled to the solids particle diameter very small (is that median size is below 20 microns, mostly below 10 microns) time, the fine particle of the oil in the sludge fuel, organic matter, water and coal just can distribute very equably, in stable condition, and also have certain fluidity, can pumping.
Simultaneously, can pass through spray burning with the superfine mud that aforesaid method forms, burning is complete, and the discharging of its sulfurous gas, oxynitrides, carbon monoxide and black smoke is compared with heavy fuel oil (HFO) with coal, significantly reduce, and be a kind of clean fuel.
Production method of the present invention can be a continous way, also can be step.Optimal way is a continous way.A kind of preferred production methods is that water-containing sludge that sewage work is produced and coal dust and oil fuel are sent into simultaneously to mix in the super grinder through measuring apparatus by needed proportioning and mixed extra-fine grinding, and streamline operration can realize serialization production.In addition, as required, material repeatedly can be ground, also can mix the extra-fine grinding devices in series and use, can obtain thinner, the uniform more sludge fuel of mixing two or many.
In addition, the production of superfine mud can also be proceed step by step, promptly earlier coal dust is become coal oil mixture with the oil fuel mixed grinding, and then mixes with mud and to carry out extra-fine grinding production sludge fuel.Also can earlier water-containing sludge be become the mud slurry oil with the oil fuel mixed grinding, again with mud slurry oil and coal dust mixing extra-fine grinding production superfine mud.It also can be continous way that substep mixes extra-fine grinding production sludge fuel, also can be step.Optimal way is a continous way, because can not influence production efficiency.
Because oil fuel heavy fuel oil (HFO) viscosity height under lower temperature particularly is mobile poor,, be controlled between 15 degrees centigrade～95 degrees centigrade, generally between 50～80 degrees centigrade so the temperature of charge during production can be higher than room temperature.
When adding sweetening agent, sweetening agent should be with water-containing sludge, coal dust and oil fuel, the mixed together extra-fine grinding, and the mean particle size that also can reach the sweetening agent in the fuel is below 20 microns, preferably in the level below 10 microns.
Major advantage of the present invention is:
(a) technical process of the present invention is short, and equipment is fairly simple, need not be further dry behind the mechanical sludge dewatering, saved the energy, and reduced equipment.
(b) raw mix is through extra-fine grinding, forms a kind of fuel paste that can pumping.In addition, sludge fuel of the present invention can spray burning, and its firing out rate height pollutes minimumly, is a kind of clean fuel.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.
Embodiment 1
1. raw material
(1) domestic sludge of Shanghai City sewage work generation
Water-content---74.0%, thermal value (as received basis, kilocalorie/kilogram)---910
(2) certain colliery power coal dust
Water-content---9.0%, ash content---17%, thermal value (kilocalorie/kilogram)--5500 coal powder sizes (millimeter)---2～5
(3) heavy oil (180#)
Density (15 degrees centigrade, kilogram/liter)---0.9680
Viscosity (engler) E 80---6.13, calorific value (kilocalorie/kilogram)---10500
(4) commercially available Calcii Carbonas
Calcium carbonate content: 〉=97%
Mean particle size (micron): 1～3
2. preparation condition
(1) proportioning raw materials (parts by weight)
Water-containing sludge---40
Coal dust---30
Heavy oil (180#)---30
Lime carbonate (the grammeatom ratio, calcium: sulphur)---3: 1
(2) preparation method
Mixed grinding mode---material is sent into mixed super grinder simultaneously, and (Shanghai Fine Powder Dissolved Machinery EquipmentCo.ltd CN01109394.3) grinds 1 time.
Temperature of charge (degree centigrade)
Heavy oil---50, other solid materialss---room temperature.
3. product sludge fuel index
(1) appearance character---grey black fuel paste has certain flowability, but pumping
(2) water-content (weight %)---32.3
(3) solids average particle size (micron) in the fuel---15.1
[annotate: laser particle size analyzer is used in the granularity analysis about raw material and sludge fuel among the present invention.This light source for instrument is a helium-neon laser, and wavelength is 0.6328 μ m, and power is 2mW.Sample dilutes with gasoline, and gasoline is as medium.Utilize particle to the scattering of light theory, the size of particles difference, scattering angle is also different, measures scattered intensity at different scattering angles, uses Computer Processing, provides the median size size and the distribution of particle.It is 50% particle diameter that mean particle size is herein got cumulative distribution, following examples with.]
(4) thermal value (as received basis, kilocalorie/kilogram)---4635
(5) sulphur content (butt, weight %)---3.27
(6) ash oontent (butt, weight %)---23.90
(7) sulfur trioxide content (weight %) in the ash content---24.50
Be fixed on sulphur in the ash content and account for the ratio (weight %) of the sulphur in the fuel---71.5.
Embodiment 2
1. raw material
(1) Shanghai City paper mill effluent mud
Water-content (weight %)---60.0, thermal value (as received basis, kilocalorie/kilogram)---939
(2) coal dust---index is with embodiment 1
(3) heavy oil---index is with embodiment 1
(4) commercially available powdery unslaked lime
Granularity: about 1 millimeter
Calcium oxide content:＞86%
2. preparation condition
(1) proportioning raw materials (parts by weight)
Paper mill sludge---40
Coal dust---30
Heavy oil---30
Commercially available powdery unslaked lime---(the grammeatom ratio, calcium: sulphur)---4: 1
(2) preparation method
Elder generation is mixed grinding in mixing and grinding machine with mud and heavy oil, and with mud and oily mixture and coal dust and the lime powder mixed grinding pulp mixture in mixing and grinding machine that reaches, paste mixture grinds 2 times more again.
Temperature of charge (degree centigrade):
Heavy oil---80, unclassified stores---room temperature
3. product sludge fuel index
Sludge fuel to preparation is measured its face shaping and every burning index with ordinary method.The result is as follows:
(1) appearance character---grey black fuel paste has certain flowability, can pumping
(2) water-content (weight %)---44.1
(3) solid average particle size (micron) in the fuel paste---4.5
(4) sulphur content (weight %)---1.7
(5) ash oontent (butt, weight %)---21.71
(6) thermal value (kilocalorie/kilogram)---4301
(7) sulphur trioxide (weight %) in the ash content---27.71
Be fixed on sulphur in the ash content and account for the ratio (weight %) of the sulphur in the fuel---79.5.
Embodiment 3
1. raw material
(1) Shanghai City chemical enterprise industrial sludge
Water-content (weight %)---85
Thermal value (butt, kilocalorie/kilogram)---3305
(2) No. 1 cleaned coal in certain colliery
Water-content (weight %)---9.5
Ash content (weight %)---less than 7.8
Thermal value (kilocalorie/kilogram)---6650
Granularity (millimeter) 2～5
(3) heavy oil 380#
Density (kilogram/liter, 15 degrees centigrade)---0.9562
Viscosity (engler) E 80---10.02
Calorific value (kilocalorie/kilogram)---10112
(4) commercially available calcium carbide ground-slag
Granularity (millimeter): 1～2.Calcium oxide content:＞90%
2. preparation condition
(1) proportioning raw materials (parts by weight)
Industrial sludge---50
Coal dust---20
Heavy oil---30
Carbide slag (the grammeatom ratio, calcium: sulphur)---5: 1
(2) mixing method---earlier with heavy oil and coal dust mixed grinding, again with industrial sludge and carbide slag mixed grinding, two mixed super grinders (Shanghai Fine Powder Dissolved Machinery EquipmentCo.ltd's manufacturing) series connection is used, and mixture grinds twice again.
(3) temperature of charge (degree centigrade)
380# heavy oil---95, unclassified stores---room temperature
3. product sludge fuel index
(1) appearance character---grey black fuel paste has certain flowability, but pumping
(2) solid average particle size (micron) in the fuel paste---4.1
(3) water-content (weight %)---44.3
(4) thermal value (as received basis, kilocalorie/kilogram)---4537
(5) sulphur content (as received basis, weight %)---.1.1 2
(6) ash content (as received basis, weight %)---11.2
(7) sulphur trioxide (weight %) in the ash content---22.5
Be fixed on sulphur in the ash content and account for the ratio (%) of the sulphur in the fuel---90.1
Embodiment 4
1. raw material
Domestic sludge---with embodiment 1
Coal tar
Density (kilogram/liter, 15 degrees centigrade)---0.9653
Viscosity (engler) E 80---9.5
Thermal value (kilocalorie/kilogram)---9726
Commercially available water-ground limestone
Calcium carbonate content:＞98%
Granularity (micron):＜20
2. preparation condition
(1) proportioning raw materials (parts by weight)
Mud---70
Coal tar---30
Water-ground limestone (the grammeatom ratio, calcium: sulphur)---1.5: 1
(2) preparation method
The mixed grinding method---three kinds of materials are directly sent in the mixing and grinding machine in proportion
Mixed grinding, 2 mixing and grinding machine series connection
Temperature of charge (degree centigrade)
Coal tar---80
Solid materials---room temperature
3. product sludge fuel index
(1) appearance character---grey black fuel paste has good mobility, but pumping
(2) water-content (weight %)---51.8
(3) thermal value (as received basis, kilocalorie/kilogram)---3536
(4) solids average particle size (micron) in the fuel---3.5
(5) sulphur content (as received basis, weight %)---1.08
(6) ash content (as received basis, weight %)---10.4
(7) sulphur trioxide (weight %) in the ash content---14.08
Be fixed on sulphur in the ash content and account for sulphur ratio (%) in the fuel---54.2
Embodiment 5
1. raw material
Industrial sludge---with embodiment 3
Certain open coal mine produces the powdery brown coal
Granularity (millimeter)---2～4
Ash content (weight %)---16.9
Thermal value (kilocalorie kilogram)---3062
180# heavy oil---with embodiment 1
Lime white
Calcium contents (butt %):＞90
Moisture (weight %): 70
2. preparation condition
(1) proportioning raw materials (parts by weight)
Mud---40
Brown coal---40
180# heavy oil---20
Lime white (the grammeatom ratio, calcium: sulphur)---6: 1
(2) method
The mixed grinding method---earlier with behind brown coal and the heavy oil mixed grinding, again mixture being become fuel paste with mud with the lime white mixed grinding, fuel paste grinds 1 time again.
Temperature of charge (degree centigrade)
Heavy oil: 50 ℃ of other solid materialss: room temperature
3. product sludge fuel index
(1) appearance character---grey black fuel paste has certain flowability, but pumping
(2) solids average particle size (micron) in the fuel---6.7
(3) water content (weight %)---44.8
(4) thermal value (as received basis, kilocalorie/kilogram)---3589
(5) ash content (as received basis, weight %)---23.8
(6) sulphur content (as received basis, weight %)---0.64
(7) sulphur trioxide (weight %) in the ash content---6.53
Be fixed on sulphur in the ash content and account for the ratio of the sulphur in the fuel---97.1.
Embodiment 6
1. raw material
Paper mill, Shanghai City mud---with embodiment 2
Certain colliery coal dust---with embodiment 1
The waste oil (composition mainly is a LIGHT DIESEL OIL) that Shanghai City enterprise is reclaimed by waste emulsion
Density (kilogram/liter, 15 degrees centigrade)---0.9226
Moisture (weight %)---0.82
Calorific value (kilocalorie/kilogram)---8650
Water-ground limestone---with embodiment 4.
2. preparation condition
(1) proportioning raw materials (parts by weight)
Paper mill sludge---50
Coal dust---15
Emulsion waste oil---35
Water-ground limestone (grammeatom is than calcium: sulphur)--and-3: 1
(2) mixed grinding condition---substep grinds, and first mixed grinding mud and waste oil grind to form fuel paste with mixture and coal dust and Wingdale again, and fuel paste grinds twice again.
(3) temperature of charge (degree centigrade)
Waste oil--50 ℃ of solid materialss---room temperature
3. product sludge fuel index
(1) appearance character---grey black soup compound has certain flowability, but pumping
(2) moisture (weight %)---30.5
(3) solid average particle size (micron) in the fuel---2.7
(4) thermal value (as received basis, kilocalorie/kilogram)---4323
(5) sulphur content (as received basis, weight %)---0.37
(6) ash content (as received basis, weight %)---20.5
(7) sulphur trioxide (weight %) in the ash content---3.25
Be fixed on sulphur in the ash content and account for the ratio (%) of sulphur in the fuel---72.0
All quote in this application as a reference at all documents that the present invention mentions, just quoted as a reference separately as each piece document.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. sludge fuel is characterized in that it contains:
(a) water-containing sludge of 30-80 parts by weight;
(b) coal dust of 0.001-50 parts by weight;
(c) oil fuel of 10-70 parts by weight;
Wherein, the median size of solid particulate is below 20 microns.
2. sludge fuel as claimed in claim 1 is characterized in that, the median size of described solid particulate is the 0.1-20 micron.
3. sludge fuel as claimed in claim 1 is characterized in that, the median size of described solid particulate is the 0.5-10 micron.
4. sludge fuel as claimed in claim 1 is characterized in that, the water content of described water-containing sludge is 30-90wt%.
5. sludge fuel as claimed in claim 1 is characterized in that, the butt calorific value of described water-containing sludge is 2000 kilocalorie/kilograms～3500 kilocalorie/kilograms.
6. sludge fuel as claimed in claim 1, it is characterized in that, described water-containing sludge is selected from down group: the domestic sludge that city domestic sewage treatment plant produces, paper mill effluent are handled the paper plant's mud that produces, industrial sludge, the greasy dirt that industrial enterprise's sewage disposal produces, or its mixture.
7. sludge fuel as claimed in claim 1 is characterized in that, described coal dust is selected from down group: the refuse coal after brown coal, bituminous coal and hard coal, coke, breeze, clean fine coal and the washing, or its mixture.
8. sludge fuel as claimed in claim 1, it is characterized in that described oil fuel is selected from down group: diesel oil, heavy gas oil, heavy oil, residual oil, petroleum crude oil, consistency crude oil, shale oil, refinery coke, petroleum pitch, coal tar, fuel oil waste, waste edible oil, useless technical oils, polymer substance cracked oil or its mixture.
9. sludge fuel as claimed in claim 1 is characterized in that, also contains sweetening agent, and the consumption of described sweetening agent is to make the grammeatom ratio of calcium in the sweetening agent or the sulphur in magnesium and the fuel between 1.0: 1～6: 1.
10. the preparation method of a sludge fuel is characterized in that, this method may further comprise the steps:
(i) with the water-containing sludge of (a) 30-80 parts by weight, the coal dust and (c) the oil fuel mixing of 10-70 parts by weight of (b) 0.001-50 parts by weight, form raw mix,
(ii) raw mix is ground, the median size that makes the solid particulate in the fuel is below 20 microns, thereby obtains the sludge fuel of pulp-like;
Perhaps the method comprising the steps of:
With the coal dust of water-containing sludge (b) the 0.001-50 parts by weight of (a) 30-80 parts by weight and (c) oil fuel of 10-70 parts by weight send into grinding plant simultaneously and grind, the median size that makes the solid particulate in the fuel is below 20 microns, thereby obtains the sludge fuel of pulpous state.
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| CNB200410017577XA CN1320084C (en) | 2004-04-09 | 2004-04-09 | Extra fine mud fuel and production thereof |
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| CNB200410017577XA CN1320084C (en) | 2004-04-09 | 2004-04-09 | Extra fine mud fuel and production thereof |
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| CN1680518A true CN1680518A (en) | 2005-10-12 |
| CN1320084C CN1320084C (en) | 2007-06-06 |
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| CNB200410017577XA Expired - Fee Related CN1320084C (en) | 2004-04-09 | 2004-04-09 | Extra fine mud fuel and production thereof |
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| CN101818086A (en) * | 2010-04-23 | 2010-09-01 | 汪建林 | Production process and production equipment of sludge and garbage carbonized slurry fuel |
| CN101880567A (en) * | 2010-07-09 | 2010-11-10 | 绍兴文理学院 | Compound type sludge fuel and preparation method thereof |
| CN102533379A (en) * | 2011-12-13 | 2012-07-04 | 苏韶华 | Sludge synthetic fuel |
| CN101747964B (en) * | 2010-01-22 | 2012-11-14 | 浙江大学 | Water coal slurry and preparation method thereof |
| CN102899118A (en) * | 2012-10-12 | 2013-01-30 | 苏武民 | Sludge synthesized fuel and preparation method thereof |
| CN102899119A (en) * | 2012-11-07 | 2013-01-30 | 天津德丰慧橙环保科技有限公司 | Sludge synthetic fuel and method for preparing same |
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| CN107488480A (en) * | 2017-09-12 | 2017-12-19 | 王力民 | Particulate sludge fuel and its production method |
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| JP2000176490A (en) * | 1998-12-11 | 2000-06-27 | Mitsubishi Materials Corp | Treatment of carbon-containing sludge |
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| CN102533379B (en) * | 2011-12-13 | 2014-12-24 | 苏韶华 | Sludge synthetic fuel |
| CN102899118A (en) * | 2012-10-12 | 2013-01-30 | 苏武民 | Sludge synthesized fuel and preparation method thereof |
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| CN102899119B (en) * | 2012-11-07 | 2014-06-18 | 天津德丰慧橙环保科技有限公司 | Sludge synthetic fuel and method for preparing same |
| CN102899119A (en) * | 2012-11-07 | 2013-01-30 | 天津德丰慧橙环保科技有限公司 | Sludge synthetic fuel and method for preparing same |
| CN104073312A (en) * | 2013-03-29 | 2014-10-01 | 中国石油化工股份有限公司 | Composite sludge coal and preparation method thereof as well as fuel |
| CN103789059A (en) * | 2014-01-15 | 2014-05-14 | 克拉玛依市瑞利石油科技有限责任公司 | Oily sludge granular fuel and preparation method thereof |
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