CN105038894A - Sludge-biomass formed fuel and preparation method thereof - Google Patents
Sludge-biomass formed fuel and preparation method thereof Download PDFInfo
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- CN105038894A CN105038894A CN201510507637.4A CN201510507637A CN105038894A CN 105038894 A CN105038894 A CN 105038894A CN 201510507637 A CN201510507637 A CN 201510507637A CN 105038894 A CN105038894 A CN 105038894A
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- mud
- sludge
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- stalk powder
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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 discloses a sludge-biomass formed fuel which is prepared from sludge particles and straw powder particles in a mass ratio of (2-10):10. The preparation method comprises the following steps: mixing the sludge particles with the particle size of 2-4cm obtained by sludge extrusion with the straw powder particles in a mass ratio of (2-10):10, and finally, sending the mixture into a forming machine to perform compaction, thereby obtaining the sludge-biomass formed fuel. The sludge-biomass formed fuel can substitute the original biomass formed fuel. The organic components in the fuel can be combusted, thereby fully utilizing the heat value and killing pathogenic microorganisms in the sludge. As for the sludge attached to the straw powder particles, the straw powder particles can not be easily blown up on the hearth and can be sufficiently combusted, thereby reducing the coking, relieving the chlorine corrosion and reducing the abundant pollution.
Description
Technical field
The present invention relates to environmental protection technology and power-saving technology, particularly a kind of mud-biomass molding fuel and preparation method thereof.
Background technology
Activated sludge process is the domestic sewage processing method generally used at present, what it can remove deliquescent and colloidal state from sewage can biochemical organism and by the suspended solids of activated sludge absorption and some other material, simultaneously also can remove a part of phosphorus element and nitrogen.
This method is under artificial aerobic condition, carries out continuous mixed culture to sewage and various microbial population, forms active sludge.Utilize the biological flocculation and precipitation of active sludge, adsorption and oxidation effect, to decompose the organic pollutant removed in sewage.Then make mud be separated with water, most of mud is back to aeration tank again, and redundance then discharges Sludge System.Therefore, inevitably, a large amount of excess sludges can be produced in sewage treatment process.
In biochemical treatment process, the microorganism in active sludge constantly consumes the organic substance in waste water.In the organic substance be consumed, part organic substance is oxidized with the energy provided needed for microbial life activity, another part organic substance is then utilized to synthesize new tenuigenin by microorganism, thus make microbial proliferation reproduction, microorganism is metabolic while, some old microbial death again, therefore create excess sludge.These excess sludges are seldom rationally disposed, and mainly cannot be directly used in burning because excess sludge calorific value is low.
There is the low problem of ash fusion point that the burning of biomass inorganization produces in the shaping biomass fuel of prior art; The easy coking of high-temp combustion, problem to burner chlorine corrosion; And the efficiency of combustion of low-temperature burning is low, and the problems such as content of dioxin is higher in the cigarette gas of discharge.How can by mud through effective process, making it be easy to burning, be not only conducive to the Appropriate application of waste resource, also help the protection of environment, is the problem of worth people research.
Summary of the invention
Goal of the invention: for above-mentioned deficiency of the prior art, the invention provides a kind of excess sludge and effectively dispose the method with recycling, solve the coking in biomass fuel high-temp combustion process and the problem to burner chlorine corrosion, improve the efficiency of combustion of biomass, reduce dioxin emission, make stalk more than needed become the novel forming fuel of environmental protection and energy saving.
Technical scheme: the invention discloses a kind of mud-biomass molding fuel, the raw material of described shaped fuel is mud granule and stalk powder, and quality proportioning is 2 ~ 10:10.
Described mud is solid-state or semi-solid state, and its composition comprises water, mud, microorganism and lysate thereof.This mud is after adopting AlSnSi alloy flocculation, dehydrating and curing, the mud of solid content between 40 ~ 60%.
The finished product of described stalk powder to be straw or its shell be raw material are pulverized and are formed.Such as corn, paddy rice, wheat, cotton, rape, sugarcane, cassava, preferred corn, cotton.
Present invention also offers the preparation method of above-mentioned mud-biomass molding fuel, concrete steps are:
Mud extruding is obtained the mud granule that particle diameter is 2 ~ 4cm, then by mud granule and stalk powder in mass ratio example be the mix of 2 ~ 10:10, the compression moulding of last mixture feeding forming machine, i.e. mud-biomass molding fuel of the present invention.
Described mud is after adopting AlSnSi alloy flocculation, dehydrating and curing, the mud of solid content between 40 ~ 60%.
The preparation method of described stalk powder is: the stalk after drying or plant shell mechanical disintegration are become particle diameter to be the particle of 0.5 ~ 2cm.
Further, the mass ratio of described mud granule and stalk powder is 3 ~ 5:10.Most preferred, the ratio of mud, stalk is 4:10, and at this moment, not only have higher calorific value, its combustionproperty is best, and can not run off.
Also find in research, if in mix step, add stablizer, it has the effect suppressing high temperature to run off, and described stablizer add-on is 5 ~ 8%, and described stablizer can be calcium phosphate, hypophosphite monohydrate calcium dihydrogen or dicalcium phosphate; Preferably phosphoric acid calcium.
Further, if in mix step, add dispersion agent, then have stable silicon hydrochlorate effect, the add-on of described dispersion agent is 2 ~ 5%; Dispersion agent can be ferric sulfate, ferric oxide or ferrous sulfate; Preferred ferric oxide.
Beneficial effect: the alternative original biomass molding fuel of mud-biomass molding fuel of the present invention, as the fuel at various station boiler, Industrial Boiler, boiler for domestic and industrial furnace cellar for storing things.Organic composition in this fuel can be burnt, and calorific value is fully utilized, and can kill the pathogenic micro-organism in mud.The mud be attached on stalk powder makes stalk powder not easily can kick up and Thorough combustion on siege, reduces coking and alleviates chlorine corrosion, decreasing a large amount of pollution.
Meanwhile, preparation method provided by the present invention, technique is simple, easy to operate, easy to implement.
Embodiment:
The present invention is further described below in conjunction with embodiment.It should be understood that these embodiments only for illustration of object, do not form any limitation of the invention.
Embodiment 1
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the maize straw after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 2: 10, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 1.
Embodiment 2
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the maize straw after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 4: 10, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 2.
Embodiment 3
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the maize straw after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 10: 10, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 3.
Embodiment 4
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the cotton stalk after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 3: 10, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 4.
Embodiment 5
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the reed straw after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 4: 10, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 5.
Embodiment 6
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the maize straw after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 2: 10, add the calcium phosphate of 5% again, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 6.
Embodiment 7
First city sewage and sludge (solid content 40-60%) extruding after dehydration is obtained granular sludge (particle diameter 2-4cm), then granular sludge is joined in the maize straw after pulverizing, stir while adding (30-50 turns/min), the mass ratio of mud and stalk powder is made to reach 2: 10, add the calcium phosphate of 5%, the ferric oxide of 2.5% again, mix is evenly sent into forming machine afterwards and is suppressed into shaped granule (diameter 1.2cm, long 3-5cm, density 1.2-1.4t/m
3), obtain product 7.
By above-mentioned 7 samples prepared, be placed in 12MWth circular fluid bed and burn, finally, record
Sample 1, calorific value 265.5 ± 20.7KJ/mol; Bed temperature higher than 860 DEG C, does not run off.
Sample 2, calorific value 238.4 ± 15.5KJ/mol; Bed temperature higher than 950 DEG C, does not run off.
Sample 3, calorific value 197.5 ± 16.7KJ/mol; Bed temperature higher than 950 DEG C, does not run off.
Sample 4, calorific value 183.7 ± 14.3KJ/mol; Bed temperature higher than 900 DEG C, does not run off.
Sample 5, calorific value 217.6 ± 19.0KJ/mol; Bed temperature higher than 950 DEG C, does not run off.
Sample 6, calorific value 264.3 ± 20.4KJ/mol; Bed temperature higher than 920 DEG C, does not run off.
Sample 7, calorific value 260.5 ± 21.9KJ/mol; Bed temperature higher than 950 DEG C, does not run off.
In summary it can be seen, the calorific value of the biological substance shaped granule when ratio of mud, maize straw is 4:10 can reach 238.4 ± 15.5KJ/mol, and bed temperature is 950 DEG C time, can not run off, combustionproperty is best, is therefore mud, the optimum proportion of stalk ratio to be 4:10 be biological substance shaped granule.Can find out, after having added stablizer and dispersion agent, to have and improve the better effect of bed temperature simultaneously; Avoid the unfavorable of high temperature loss.
Claims (10)
1. mud-biomass molding fuel, it is characterized in that the raw material of described fuel is mud granule and stalk powder, quality proportioning is 2 ~ 10:10.
2. shaped fuel as claimed in claim 1, it is characterized in that described mud is solid-state or semi-solid state, its composition comprises water, mud, microorganism and lysate thereof.
3. shaped fuel as claimed in claim 1, is characterized in that described mud is after adopting AlSnSi alloy flocculation, dehydrating and curing, the mud of solid content between 40 ~ 60%.
4. Application way as claimed in claim 1, is characterized in that described stalk powder to be straw or its shell is that the finished product of raw material are pulverized and form.
5. the preparation method of mud-biomass molding fuel, mud is it is characterized in that to extrude, obtain the mud granule that particle diameter is 2 ~ 4cm, then be the ratio mix of 2 ~ 10:10 in mass ratio by mud granule and stalk powder, finally by mixture compression moulding, i.e. mud-biomass molding fuel of the present invention.
6. preparation method as claimed in claim 5, is characterized in that described mud is after adopting AlSnSi alloy flocculation, dehydrating and curing, the mud of solid content between 40 ~ 60%.
7. preparation method as claimed in claim 5, is characterized in that the mass ratio of described mud granule and stalk powder is 3 ~ 5:10.
8. preparation method as claimed in claim 5, is characterized in that also adding stablizer and dispersion agent in preparation process.
9. preparation method as claimed in claim 8, is characterized in that described stablizer is calcium phosphate.
10. preparation method as claimed in claim 8, is characterized in that described dispersion agent is ferric oxide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510507637.4A CN105038894B (en) | 2015-08-18 | 2015-08-18 | A kind of sludge-biomass molding fuel and preparation method thereof |
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| CN201510507637.4A CN105038894B (en) | 2015-08-18 | 2015-08-18 | A kind of sludge-biomass molding fuel and preparation method thereof |
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| CN105038894A true CN105038894A (en) | 2015-11-11 |
| CN105038894B CN105038894B (en) | 2018-08-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867617A (en) * | 2017-04-13 | 2017-06-20 | 北京工商大学 | A kind of caragana microphylla complex coal preparation method |
| CN111333302A (en) * | 2020-03-31 | 2020-06-26 | 天津大学 | Deep sludge dewatering and fuel forming method and device |
| CN113105930A (en) * | 2021-04-19 | 2021-07-13 | 深圳市华镛环境工程有限公司 | Sludge biomass mixed fuel forming technology |
| CN115893791A (en) * | 2022-07-06 | 2023-04-04 | 北京盛新环保科技有限公司 | Sludge dewatering method and prepared sludge biomass mixture |
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| CN111333302A (en) * | 2020-03-31 | 2020-06-26 | 天津大学 | Deep sludge dewatering and fuel forming method and device |
| CN111333302B (en) * | 2020-03-31 | 2021-12-31 | 天津大学 | Deep sludge dewatering and fuel forming method and device |
| CN113105930A (en) * | 2021-04-19 | 2021-07-13 | 深圳市华镛环境工程有限公司 | Sludge biomass mixed fuel forming technology |
| CN115893791A (en) * | 2022-07-06 | 2023-04-04 | 北京盛新环保科技有限公司 | Sludge dewatering method and prepared sludge biomass mixture |
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| CN105038894B (en) | 2018-08-03 |
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Effective date of registration: 20190415 Address after: 224004 Large Data Industrial Park A-15, Chengnan New Area, Yancheng City, Jiangsu Province Patentee after: Jiangsu Yida Testing Technology Co., Ltd. Address before: 224051 middle road of hope Avenue, Yancheng City, Jiangsu Province, No. 1 Patentee before: Yangcheng Institute of Technology |