CN102703155B - Biomass fuel based on sludge, straw and raw coal, preparation method of biomass fuel and application of fuel slag - Google Patents
Biomass fuel based on sludge, straw and raw coal, preparation method of biomass fuel and application of fuel slag Download PDFInfo
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- CN102703155B CN102703155B CN201210215416.6A CN201210215416A CN102703155B CN 102703155 B CN102703155 B CN 102703155B CN 201210215416 A CN201210215416 A CN 201210215416A CN 102703155 B CN102703155 B CN 102703155B
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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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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a biomass fuel based on sludge, straw and raw coal, a preparation method of the biomass fuel and application of a fuel slag, and belongs to the field of resource utilization of solid waste. The biomass fuel is formed by mixing, pressing and molding the sludge, the straw and the raw coal; and the weight ratio of the sludge, the straw and the raw coal is (1-3): (1-3): 3. The preparation method comprises the following steps of: adding limestone to the dehydrated sludge subjected to application of an aluminum coagulant, wherein the mass percentage of the limestone in the sludge is 1 to 3 percent; mixing the sludge and the straw to aerobically compost; mixing the raw coal with the mixture of sludge and straw, pressing and molding to obtain the biomass fuel. After the biomass fuel disclosed by the invention is burnt, the maximum absorption capacity of the slag exceeds 25g/Kg and can be used as substitutes of filler materials for artificial wetlands. According to the biomass fuel based on sludge, straw and raw coal, the preparation method of the biomass fuel and the application of the fuel slag, water in the raw material can be hydrated quickly, heavy metals can be passivated, the emission of SO2 in combustion of the raw coal can be reduced, and the burnt slag of the biomass fuel has high contents of calcium, aluminum and Ferrum with strong absorption capacity to phosphor and can be used as a phosphorus removing agent during sewage treatment.
Description
Technical field
The invention belongs to environment protection class solid waste resource recovery and utilize technical field, more particularly, relate to a kind of biomass fuel based on mud-stalk-raw coal and preparation method thereof, and the application of slag after this biomass fuel combustion.
Background technology
The raising day by day of the urban operating mechanism service level of modern city and the increase of urban population, make the quantity discharged of city domestic sewage also increasing, causes producing a large amount of mud in the treating processes of municipal effluent.Sewage sludge is a kind of heterogeneous body being made up of organic relic, microorganism, inorganic particle, colloid etc., mud contains toxic organic compound, pathogenic microorganism and heavy metal, can produce serious harm to environment, along with the sharply increase of sludge yield, the disposal of mud is more and more subject to people's attention.
An urgent demand of environment and the energy makes investigator start to pay attention to the processing to mud, and normal employing burning and pyrolysis are processed it.Because the calorific value of pure mud is lower, directly set it as fuel and be both difficult for stable burning, the heat that burning produces is also difficult to meet the demand of Industrial Boiler for heat and generating power.By mud and coal are mixed using this as a kind of fuel, both can reach the object of protection of the environment, the reasonable approach of simultaneously opened up again a save energy, increasing economic efficiency.
Compared with the additive methods such as sludge incineration and compost, have advantages of outstanding: burning can greatly reduce the volume and weight (after burning, volume can reduce more than 90%) of mud, thereby finally need material to be processed seldom not have the problem of heavy metal ion, sometimes burning ash can be made into useful product, is relatively safe a kind of sludge treating method; The speed of sludge treatment is fast, and floor space is little, does not need standing storage; Mud can on-site incineration, does not need long-distance transportation; Can be used for heat supply or generating by recovered energy; Adopt advanced burning facility can realize very low secondary pollution etc.Outstanding features such as sludge incineration is the sludge treatment mode of " thoroughly ", more in developed country's application such as Europe, the U.S., Japan, and it is fast with processing speed, and minimizing degree is high, reusing of energy source and famous.
Owing to containing abundant organism in mud, itself just has certain calorific value, therefore mud is mixed with coal and carries out the focus that mixed firing is sludge incineration research for generating electricity.Mud mixed firing refers to mud is mixed and burnt with other combustiblematerials, has both taken full advantage of the calorific value of mud, has reached again the object of saving the energy.The blending objects of mud is mainly fire coal, flammable solid wastes straw etc.
Chinese Patent Application No. CN 201010169094.7, the applying date is on May 14th, 2010, invention and created name is: straw composite fuel manufacture method and straw composite fuel, this application case is that 7:1. 5:1. 5 mixes and stirs by stalk, coal dust raw material and the paper mill sludge raw material of processing gained according to weight ratio, to form raw mixture, compression moulding obtain straw composite fuel.The blending ratio of this application case is unreasonable, and what adopt is paper mill sludge, and its burning slag cannot form the poly-filler of water treatment phosphorus of high absorption capacity.
In addition, Chinese Patent Application No. CN 201010270995.5, the applying date is on September 3rd, 2010, invention and created name is: a kind of preparation method of sludge straw biomass fuel, this application case is first to mud and coal grain mixed dehydration, then with the moulding of stalk mixing granulation.The mixed dehydration of this application case needs to filter, complicated operation, and high cost, and heavy metal ion in can not stabilized sludge, be not easy to outdoor storing up, and easily produces secondary pollution.
Summary of the invention
the technical problem that invention will solve
The present invention is directed to existing mud-stalk-raw coal mixed combusting technology Raw dewatering time long, the Leaching of Heavy Metals that may exist in transportation, and its slag can not recycling problem, a kind of biomass fuel based on mud-stalk-raw coal and preparation method thereof is provided, the present invention screens specific mud, and by adding a small amount of unslaked lime stone bactericidal dehydration, utilizing the preliminary reduction water ratio of stalk and mud hybrid composting, the passivation of straw degradative soil ulmin and unslaked lime stone are met water generates OH
-all curable Of Heavy Metal Level In Sludges, are beneficial to storage and the transportation of mud-stalk mixture; Mud-stalk mixture again with raw coal mixing compression moulding, add after unslaked lime stone CaO, Al in collaborative mud
2o
3, Fe
2o
3the characteristic high with NaCl content, SO in curable reduction propellant combination burning process
2release, and after burning in slag because of Ca, Al and Fe content high, promote the phosphorus adsorptive power in sewage, make fuel slag can be in sewage treatment process as dephosphorization agent application or apply as Performance of Constructed Wetlands Substrates.
technical scheme
For achieving the above object, technical scheme provided by the invention is:
Biomass fuel based on mud-stalk-raw coal of the present invention, described biomass fuel is take mud, stalk and raw coal as aggregate mixing compression moulding, the mass ratio of its mud, stalk, raw coal is 1 ~ 3:1 ~ 3:3, wherein, described mud is the dewatered sludge adopting after aluminum salt application, and wherein the oxide compound of aluminium is with Al
2o
3meter quality percentage composition is not less than 5%, and the water ratio of mud is lower than 70%, pretreated by adding unslaked lime stone in above-mentioned mud, and wherein to account for the mass percent of mud be 1 ~ 3% to unslaked lime stone; The water ratio of described stalk is lower than 60%, and its granularity is pulverized as being less than 2.00 cm; Described raw coal combustion calorific value be not less than 25000 kilojoules/kilogram.
Preferably, the mass ratio of described mud, stalk, raw coal is 1:1:1.
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present invention, the steps include:
(1) raw materials pretreatment: be pre-treatment to adding unslaked lime masonry in the dewatered sludge adopting after aluminum salt application, wherein to account for the mass percent of mud be 1 ~ 3% to unslaked lime stone, and in pretreated mud, the oxide compound of aluminium is with Al
2o
3meter mass content is not less than 5%, and water ratio is lower than 70%; Become granularity to be less than 2.00cm stalk cutting and grinding, and the water ratio of stalk is for subsequent use lower than 60%; Prepare combustion heat value be not less than 25000 kilojoules/kilogram raw coal;
(2) aerobic compost dehydration: the mass ratio 1 ~ 3:1 ~ 3:3 that presses mud, stalk, raw coal, take mud, stalk and raw coal in step (1), and mud and stalk are mixed, carry out aerobic ventilation compost 15～50 days, within every 5 days, carry out a turning, make the water ratio of mud-stalk mixture lower than 50%; In the present invention, by mud and straw compost, can carry out fast dewatering, simultaneously compost treatment can produce a large amount of soil ulmin, can adsorb in a large number Zn and Cu, reduces its biological effectiveness and transport property, can reach heavy metal-passivated effect, and CaO, Al in mud
2o
3, Fe
2o
3with NaCl rich content, there is solid sulphur effect with coal mixing afterfire;
(3) mud-stalk mixture mixes with raw coal: the raw coal that step (2) is taken mixes with mud-stalk mixture of step (2), obtains mud-stalk-former coal mixtures;
(4) compression moulding: the mud-stalk-former coal mixtures of step (3), repressed moulding, obtains biomass fuel, and its forming pressure is not less than 300 t, and biomass fuel physical dimension is: height is lower than 15cm, and diameter is less than 18cm.
Preferably, in step (2), the mass ratio of mud, stalk, raw coal is 1:1:1.
The fuel slag that the present invention is based on the biomass fuel of mud-stalk-raw coal is applied or applies as Performance of Constructed Wetlands Substrates as dephosphorization agent in sewage treatment process.
beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following unusual effect:
(1) processing, problem of environmental pollution and the follow-up recycling that has considered mud-stalk-raw coal and be mixed with biomass fuel of the present invention, reach potion triple effect: CaO and mix with mud as bactericidal dehydration curing heavy metal chemical agent by adding a small amount of unslaked lime stone (CaO), after mixing with raw coal, CaO as sulphur-fixing agent, and in cinder, forms the phosphorus adsorbent of CaO mineral facies; The present invention reduces raw coal combustion SO by the salinity in mud
2release, utilize in mud Al content high simultaneously, Ca in raw coal, the essential characteristic that Fe content is high, in formation biomass fuel combustion furnace slag, high Ca, Al and Fe content are to the strong absorption property of phosphorus, and can utilize stalk and mud to carry out compost fast dewatering, and solidify the heavy metal that may exist in mud, be convenient to outdoor storing up, reduced the secondary pollution of drenching with rain and producing;
(2) biomass fuel combustion furnace slag maximal absorptive capacity of the present invention exceedes 25 g/kg, for 2 ~ 3 times of pure cinder, for 10 ~ 20 times of mineral filler zeolite, can be used as the substitute of the fillers such as artificial swamp, when realizing the recycling of solid waste making filler, greatly extend the work-ing life of artificial swamp, also saved Mineral resources, thereby possessed vast application prospect;
(3) mud of the present invention is the dewatered sludge adopting after aluminum salt application, and wherein the oxide compound of aluminium is with Al
2o
3meter mass content is not less than 5%, thereby utilizes high Ca and Fe equal size in raw coal, after combined burning, generates with SiO
2for main nucleus, Ca, Al and Fe oxide compound are main crystalline phase, form the poly-filler of water treatment phosphorus of high absorption capacity;
(4) when the mud in the present invention, stalk, raw coal quality ratio are for 1:1:1, the biomass fuel best performance preparing, its combustion heat value reach 22400 kilojoules/kilogram more than, and in the furnace gas burning the lower limit of sulfur dioxide emissions measured value per hour at 90 mg/m
3left and right, captured sulfur result is best, and the quantity discharged of oxynitride per hour is at 132 mg/m
3left and right;
(5) the present invention has improved the economic value added of biomass fuel combustion furnace slag, and the raw material of employing is mainly mud, stalk the like waste, reduces the cost of manufacture of synthetic artifact matter fuel.
Accompanying drawing explanation
Fig. 1 is slag electron-microscope scanning figure after the biomass fuel of embodiment 1 burns;
Fig. 2 is slag electron-microscope scanning figure after the biomass fuel of embodiment 2 burns;
Fig. 3 is biomass fuel slag and the Langmuir thermoisopleth of pure coal cinder to phosphor in sewage absorption of embodiment 1;
Fig. 4 is biomass fuel slag and the Langmuir thermoisopleth of pure coal cinder to phosphor in sewage absorption of embodiment 2;
Fig. 5 is biomass fuel slag and pure coal cinder mineral (XRD) the crystal phase analysis result of embodiment 1 ~ 2.
Embodiment
For further understanding content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, concrete step is as follows:
(1) raw materials pretreatment: adding unslaked lime masonry in the dewatered sludge after applying to employing aluminum salt is pre-treatment, in the present embodiment, the interpolation weight of unslaked lime stone is 1% of mud weight, and unslaked lime stone is mixed with mud, mixing process is preprocessing process, and in pretreated mud, the oxide compound of aluminium is with Al
2o
3meter mass content is 7%, and water ratio is 68%; Become granularity to be less than 2.00cm stalk cutting and grinding, the water ratio of stalk is 57% for subsequent use, stalk in the present embodiment adopts maize straw, in maize straw material, contain certain Mierocrystalline cellulose and xylogen, its xylogen is the structure monomer in material, has the effect that strengthens cell walls, cellulose-binding; And prepare combustion heat value be not less than 25000 kilojoules/kilogram raw coal;
(2) aerobic compost dehydration: the mass ratio 1:1:1 that presses mud, stalk, raw coal, take mud, stalk and raw coal in step (1), and mud and stalk are mixed, carry out aerobic ventilation compost 20 days, within every 5 days, carry out a turning, the water ratio of compost mud-stalk mixture after 20 days is 40%;
(3) mud-stalk mixture mixes with raw coal: the raw coal that step (2) is taken mixes with mud-stalk mixture of step (2), obtains mud-stalk-former coal mixtures;
(4) compression moulding the: mud-stalk of step (3)-former coal mixtures is evenly delivered on forming machine is biomass fuel finished product after compression moulding in square stock mouth, its forming pressure is not less than 300 t, biomass fuel profile main body is right cylinder, be of a size of: be highly 12cm, diameter is 17cm.Moulding artifact matter fuel combustion calorific value is: 22405 kilojoules/kilogram, standard coal calorific value be 29306 kilojoules/kilogram.After biomass fuel burns, flue gas pollutant discharges the 1-1 that sees the following form, in the present embodiment, if do not add unslaked lime stone, SO in mud
2burst size be 200 ~ 220 mg/m
3so the effect that the present invention adds unslaked lime stone in mud is significant, captured sulfur result is obvious.
The Air Pollutant Emission that in table 1-1 embodiment 1, biomass fuel burns
After gathering above-mentioned biomass fuel and burning, slag carries out Leaching of Heavy Metals research, and Leaching of Heavy Metals experiment shows, the leaching concentration of Cd, Zn, Cr, Cu, Pb, Ni is lower than the detection lower limit of ICP-MS: 0.5,1.0,0.5,1.0,1.0,1.0,1.0 μ gL
-1.Wherein the leaching concentration of As is 12.5 ± 2.3 μ gL
-1, lower than People's Republic of China's country's quality of groundwater standard (GB14848-93)-2 orders of magnitude of I class.After the biomass fuel burning of the present embodiment, other physicochemical properties of slag are as shown in table 1-2, and its main chemical compositions is as shown in table 1-3, and Fig. 1 is that in the present embodiment, biomass fuel burns rear slag electron-microscope scanning figure.
Table 1-2 embodiment 1 biomass fuel slag physical properties test mean parameter
The main chemical of table 1-3 embodiment 1 biomass fuel slag
The comparison of biomass fuel slag and pure coal dregs of incinerator maximal absorptive capacity: the biomass fuel slag of the present embodiment and the sizing of pure coal incinerator are crossed to 100 orders, accurately weigh 0.50 gram, sorbent material, add in solution 25mL, adsorption time 24h, under the condition of shaking speed 200rpm.Draw (the Langmuir adsorption isotherm line chart that Fig. 3 is the present embodiment biomass fuel slag and pure coal dregs of incinerator) by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of biomass fuel slag is 28.9 g P/Kg, and the maximal absorptive capacity of pure coal dregs of incinerator is all lower than 12.6 g P/Kg, visible biomass fuel slag is remarkable to the adsorptive power of phosphor in sewage.The biomass fuel slag of the present embodiment can be used as dephosphorization agent application or applies as Performance of Constructed Wetlands Substrates in sewage treatment process.
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, concrete step is as follows:
(1) raw materials pretreatment: adding unslaked lime masonry in the dewatered sludge after applying to employing aluminum salt is pre-treatment, in the present embodiment, the interpolation weight of unslaked lime stone is 3% of mud weight, and unslaked lime stone is mixed with mud, in pretreated mud, the oxide compound of aluminium is with Al
2o
3meter mass content is 6%, and water ratio is 65%; Become granularity to be less than 2.00cm stalk cutting and grinding, the water ratio of stalk is 58% for subsequent use, stalk in the present embodiment adopts maize straw, in maize straw material, contain certain Mierocrystalline cellulose and xylogen, its xylogen is the structure monomer in material, has the effect that strengthens cell walls, cellulose-binding; And prepare combustion heat value be not less than 25000 kilojoules/kilogram raw coal;
(2) aerobic compost dehydration: the mass ratio 1:1:3 that presses mud, stalk, raw coal, take mud, stalk and raw coal in step (1), and mud and stalk are mixed, carry out aerobic ventilation compost 25 days, within every 5 days, carry out a turning, the water ratio of compost mud-stalk mixture after 25 days is 41%;
(3) mud-stalk mixture mixes with raw coal: the raw coal that step (2) is taken mixes with mud-stalk mixture of step (2), obtains mud-stalk-former coal mixtures;
(4) compression moulding the: mud-stalk of step (3)-former coal mixtures is evenly delivered on forming machine is biomass fuel finished product after compression moulding in square stock mouth, its forming pressure is not less than 300 t, biomass fuel profile main body is right cylinder, be of a size of: be highly 13cm, diameter is 15cm.Moulding artifact matter fuel combustion calorific value is: 21321 kilojoules/kilogram, standard coal calorific value be 29306 kilojoules/kilogram.After burning, flue gas pollutant discharges the 2-1 that sees the following form, in the present embodiment, if mud does not add unslaked lime stone, SO
2burst size be 210-230 mg/m
3so the effect that the present invention adds unslaked lime stone in mud is significant, captured sulfur result is obvious.
The Air Pollutant Emission that in table 2-1 embodiment 2, biomass fuel burns
After gathering above-mentioned biomass fuel burning, slag carries out Leaching of Heavy Metals research, Leaching of Heavy Metals experiment shows, the leaching concentration of Cd, Zn, Cr, Cu, Pb, Ni is lower than the detection lower limit of ICP-MS: 0.5,1.0,0.5,1.0,1.0,1.0,1.0 μ gL
-1.Wherein the leaching concentration of As is 13.7 ± 3.3 μ gL
-1, lower than People's Republic of China's country's quality of groundwater standard (GB14848-93)-2 orders of magnitude of I class.After the biomass fuel burning of the present embodiment, other physicochemical properties of slag are as shown in table 2-2, and its main chemical compositions is as shown in table 2-3, and Fig. 2 is that in the present embodiment, biomass fuel burns rear slag electron-microscope scanning figure.
Table 2-2 embodiment 2 biomass fuel slag physical properties test mean parameters
The main chemical of table 2-3 embodiment 2 biomass fuel slags
The comparison of biomass fuel slag and pure coal dregs of incinerator maximal absorptive capacity: the biomass fuel slag of the present embodiment and the sizing of pure coal incinerator are crossed to 100 orders, accurately weigh 0.50 gram, sorbent material, add in solution 25mL adsorption time 24h, the condition of shaking speed 200rpm.Draw (the Langmuir adsorption isotherm line chart that Fig. 4 is the present embodiment biomass fuel slag and pure coal dregs of incinerator) by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of biomass fuel slag is 29.5 g P/Kg, and the maximal absorptive capacity of pure coal dregs of incinerator is all lower than 12.6 g P/Kg, visible biomass fuel slag filler is remarkable to the adsorptive power of phosphor in sewage.The biomass fuel slag of the present embodiment can be used as dephosphorization agent application or applies as Performance of Constructed Wetlands Substrates in sewage treatment process.
In embodiment 1 ~ 2, biomass fuel slag and pure coal dregs of incinerator are the difference of its Mineral crystal phase to the major cause of phosphorus adsorptive power difference, and biomass fuel mixes after mud, has formed nepheline (Na after high temperature incineration in slag
2o (Al
2o
3)
2siO
2), peridotites (Fe
2siO
4), enstatite ((Ca, Mg, Fe, Al)
2(Si, Al)
2o
6), bytownite (Ca(Al
2si
2o
8)) and (CaMg(SiO
3)
2) mineralogical composition such as diopside, and above-mentioned mineral crystal, forefathers are large, and quantity research shows, the mineral pair of high Ca, Fe and Al content is to phosphorus high adsorption capacity [Vohla, C., K v, M., Bavor, J., Chazarenc, F., ü lo, M., 2011. Filter materials for phosphorus removal from wastewater in treatment wetlands-A review. Ecological Engineering, 37,70-89].Corresponding with it, pure coal Minerals crystalline phase is mainly: potash feldspar (KAlSi
3o
8), bytownite (Ca(Al
2si
2o
8)) and gypsum (Ca (SO
4) 2H
2o), the Mineral crystal phase of formation is relatively single, thereby to a little less than the adsorption of phosphorus element in water body, Fig. 5 is biomass Fuel Furnace slag and pure coal cinder mineral (XRD) crystal phase analysis result.
embodiment 3
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 2:1:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 27.8 g P/Kg.
embodiment 4
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 2:2:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 28.1 g P/Kg.
embodiment 5
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 1:2:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 27.5 g P/Kg.
embodiment 6
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 3:1:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 28.0 g P/Kg.
embodiment 7
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 2:3:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 28.1 g P/Kg.
embodiment 8
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 3:2:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 27.9 g P/Kg.
embodiment 9
The preparation method of the biomass fuel based on mud-stalk-raw coal of the present embodiment, its preparation method is substantially with embodiment 2, difference is: the mass ratio of mud, stalk, raw coal is 1:3:3, the biomass fuel fundamental property making is roughly with embodiment 2, the adsorptive power to phosphor in sewage of its slag is remarkable, draw by the analog calculation of Langmuir adsorption isothermal line, the maximal absorptive capacity of phosphorus is 28.3 g P/Kg.
Claims (5)
1. the biomass fuel based on mud-stalk-raw coal, it is characterized in that: described biomass fuel is take mud, stalk and raw coal as aggregate mixing compression moulding, the mass ratio of its mud, stalk, raw coal is 1 ~ 3:1 ~ 3:3, wherein, described mud is the dewatered sludge adopting after aluminum salt application, and wherein the oxide compound of aluminium is with Al
2o
3meter quality percentage composition is not less than 5%, and the water ratio of mud is lower than 70%, pretreated by adding unslaked lime in above-mentioned mud, and wherein to account for the mass percent of mud be 1 ~ 3% to unslaked lime; The water ratio of described stalk is lower than 60%, and its granularity is pulverized as being less than 2.00 cm; Described raw coal combustion calorific value be not less than 25000 kilojoules/kilogram; The slag of biomass fuel is 27.5 ~ 29.5 g P/Kg to the maximal absorptive capacity of phosphor in sewage.
2. the biomass fuel based on mud-stalk-raw coal according to claim 1, is characterized in that: the mass ratio of described mud, stalk, raw coal is 1:1:1.
3. the preparation method of the biomass fuel based on mud-stalk-raw coal, the steps include:
(1) raw materials pretreatment: add unslaked lime as pre-treatment in the dewatered sludge adopting after aluminum salt application, wherein to account for the mass percent of mud be 1 ~ 3% to unslaked lime, and in pretreated mud, the oxide compound of aluminium is with Al
2o
3meter mass content is not less than 5%, and water ratio is lower than 70%; Become granularity to be less than 2.00cm stalk cutting and grinding, and the water ratio of stalk is for subsequent use lower than 60%; Prepare combustion heat value be not less than 25000 kilojoules/kilogram raw coal;
(2) aerobic compost dehydration: the mass ratio 1 ~ 3:1 ~ 3:3 that presses mud, stalk, raw coal, take mud, stalk and raw coal in step (1), and mud and stalk are mixed, carry out aerobic ventilation compost 15～50 days, within every 5 days, carry out a turning, make the water ratio of mud-stalk mixture lower than 50%;
(3) mud-stalk mixture mixes with raw coal: the raw coal that step (2) is taken mixes with mud-stalk mixture of step (2), obtains mud-stalk-former coal mixtures;
(4) compression moulding: the mud-stalk-former coal mixtures of step (3), repressed moulding, obtain biomass fuel, the slag of biomass fuel is 27.5 ~ 29.5 g P/Kg to the maximal absorptive capacity of phosphor in sewage, its forming pressure is not less than 300 t, biomass fuel physical dimension is: height is lower than 15cm, and diameter is less than 18cm.
4. the preparation method of the biomass fuel based on mud-stalk-raw coal according to claim 3, is characterized in that: in step (2), the mass ratio of mud, stalk, raw coal is 1:1:1.
5. the fuel slag of the biomass fuel based on mud-stalk-raw coal according to claim 1 and 2 is applied or applies as Performance of Constructed Wetlands Substrates as dephosphorization agent in sewage treatment process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215416.6A CN102703155B (en) | 2012-06-27 | 2012-06-27 | Biomass fuel based on sludge, straw and raw coal, preparation method of biomass fuel and application of fuel slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215416.6A CN102703155B (en) | 2012-06-27 | 2012-06-27 | Biomass fuel based on sludge, straw and raw coal, preparation method of biomass fuel and application of fuel slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102703155A CN102703155A (en) | 2012-10-03 |
| CN102703155B true CN102703155B (en) | 2014-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AT518625A3 (en) * | 2016-05-09 | 2018-06-15 | Lybra S R O | Mixture for the production of pellets based on a mixture of vegetable biomass and waste sludge and additives |
| AT16026U1 (en) * | 2016-05-09 | 2018-11-15 | Lybra S R O | Mixture for the production of pellets based on a mixture of vegetable biomass and waste sludge and additives |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318748A (en) * | 2008-07-15 | 2008-12-10 | 濮阳市天地人环保工程技术有限公司 | Process for centralized processing of waste liquor of oil-gas field drill |
| CN101376856A (en) * | 2008-04-29 | 2009-03-04 | 徐小力 | Organic mixed fuel |
| CN101712503A (en) * | 2009-08-01 | 2010-05-26 | 长兴县夹浦污水处理有限公司 | Processing method of printing and dyeing textile sewage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8721745B2 (en) * | 2007-08-17 | 2014-05-13 | Milan Ptacek | Fuel and method of obtaining thermal energy from biomass with low ash-melting temperature, in particular from stillage from bioethanol processing, and apparatuses for the implementation thereof |
| CN103732727A (en) * | 2010-11-25 | 2014-04-16 | 克雷默私人有限公司 | Fuel for co-combustion with coal in coal fired power plant having low CO2 emissions |
-
2012
- 2012-06-27 CN CN201210215416.6A patent/CN102703155B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376856A (en) * | 2008-04-29 | 2009-03-04 | 徐小力 | Organic mixed fuel |
| CN101318748A (en) * | 2008-07-15 | 2008-12-10 | 濮阳市天地人环保工程技术有限公司 | Process for centralized processing of waste liquor of oil-gas field drill |
| CN101712503A (en) * | 2009-08-01 | 2010-05-26 | 长兴县夹浦污水处理有限公司 | Processing method of printing and dyeing textile sewage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT518625A3 (en) * | 2016-05-09 | 2018-06-15 | Lybra S R O | Mixture for the production of pellets based on a mixture of vegetable biomass and waste sludge and additives |
| AT16026U1 (en) * | 2016-05-09 | 2018-11-15 | Lybra S R O | Mixture for the production of pellets based on a mixture of vegetable biomass and waste sludge and additives |
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| CN102703155A (en) | 2012-10-03 |
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