CN102042599A - Resource utilization method of biomass waste - Google Patents
Resource utilization method of biomass waste Download PDFInfo
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- CN102042599A CN102042599A CN200910044588XA CN200910044588A CN102042599A CN 102042599 A CN102042599 A CN 102042599A CN 200910044588X A CN200910044588X A CN 200910044588XA CN 200910044588 A CN200910044588 A CN 200910044588A CN 102042599 A CN102042599 A CN 102042599A
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Abstract
The invention relates to a resource utilization method of biomass waste residues. The method comprises the following steps: biomass waste residues such as bark, wood sawdust, papermaking sludge and waste plastics are mixed with raw coal, the mixture is sent into a circulation fluidized bed coal firing boiler for burning, wherein the weight content of biomass to raw coal dry basis is no more than 30%; wood sawdust with the particle size which is no more than 15mm is directly mixed with raw coal to be sent into the circulation fluidized bed boiler for burning; bark or waste plastics are grinded to particles or plate-shaped particles, the obtained particles are sent into the circulation fluidized bed boiler through an independent conveyer to be mixed with raw coal; and the dewatered papermaking sludge of which water content is less than 80%, is mixed with raw coal and then the mixture is sent into the circulation fluidized bed boiler for burning.
Description
Technical field
The present invention relates to a kind of living beings waste residue utilization method, especially papermaking living beings waste residue utilize method.
Background technology
Produce solid biomass waste residues such as bark, saw ash in the paper-making pulping melting process, its calorific value is at 3000～4000kcal/kg, and moisture content is 30～75%; In the papermaking wastewater processing procedure, waste water is under the effect of acid and coagulant, lignin precipitates with sludge form, also comprise broken short fiber and other impurity of failing to utilize, calorific value is at 2000～3000kcal/kg, but behind press dewatering, moisture content is up to more than 70%, the processing of generally can not directly burning.In the waste paper pulp-making process, produce waste plastics waste residue, fine fibre, deinked sludge and other organic living beings waste residues, part waste residue moisture content is higher to reach 65～80%, and bacterial content and harmful substance contents are higher, and the calorific value difference is bigger.Biomass solid waste residue kind is many in the paper production process, more, the many enterprise of quantity is difficult to find suitable technique that it is handled, can only sell outward or external landfill, become the difficult problem of environmental improvement, but these waste residues are concentrated relatively, calorific capacity is not low, if scientifically fully utilize, can economize on resources, reduce pollution to environment.
The direct burning of living beings and curing molding Study on Technology exploitation at present mainly focuses on the design of special-purpose combustion apparatus and the application of biomass moulding thing.At present, the technology of having developed has: special-purpose burning steam boiler, nearly all there is special equipment in external paper mill, is used for handling waste residue.Because living beings are different, bulk density is little looser, has brought big difficulty for transportation and storage and use, influences the use of living beings.Therefore, the forming technique research and development of living beings have been begun from the forties.Now the forming technique of success exploitation mainly contains three major types by article shaped shape branch: screw extrusion is produced bar-shaped article shaped technology, piston-type extrusion makes the block forming technique of garden post, interior pressure roller graininess forming technique and equipment.Directly burning and curing molding technology are utilized living beings waste residue in the paper-making process to adopt these, need interpolation equipment, increase investment, the high waste residue of water content such as mud is difficult to direct utilization, the part waste residue that produces in the waste paper pulp-making process is also lacked effective processing method.
Summary of the invention
Technical problem to be solved by this invention provides a kind of energy and handles multiple living beings waste residue, the living beings waste residue is sent in the CFBB and raw coal mixed combustion, and improve the combustion position of boiler, realize the method for comprehensive utilization of papermaking living beings residue resource and energy-saving and emission-reduction.
In order to solve the problems of the technologies described above, the inventive method comprises following content: one or more in bark, wooden saw ash, paper mill sludge, the plastics class waste residue and raw coal mixed combustion in the circulating fluidized bed combustion coal boiler, the butt percentage by weight of living beings waste residue and raw coal is no more than 30%.Living beings waste residue and the mixed method of raw coal have entering the stokehold mixes, and the air-flow that utilizes COMBUSTION IN CIRCULATION FLUIDIZED BED to produce in stove mixes two kinds of methods.
As the improvement project one of the said goods, in basic production method, wooden saw ash directly with after raw coal mixes is sent to burning in circulating fluid bed boiler, and the particle diameter of saw ash is no more than 15mm.
Improvement project two as the said goods, in basic production method, one or both mixed powders in bark, the waste plastics class waste residue are broken into granular or sheet-like particle, the longest span access location length of particle is no more than 50mm, and the particle after the pulverizing is sent in the CFBB and raw coal mixed combustion by conveying device independently.
As the improvement project three of above-mentioned production decision, in basic production method, paper mill sludge is after dehydration, and mass dryness fraction is not less than 15%, with after raw coal mixes, sends into the CFBB internal combustion between raw coal is stored.
Excellent scheme is in the depth of the night of above-mentioned improvement project: the paper mill sludge of high-moisture percentage, between storing, raw coal, helps the natural evaporation drying of moisture content, through air dry after a while with after raw coal mixes, behind the evaporation section moisture content, send into burning in circulating fluid bed boiler again.
As the improvement project four of above-mentioned production decision, in basic production method, the bituminous coal of weight portion 50～60 adds the living beings waste residue that mixes raw coal weight portion 10～30 and is sent to the recirculating fluidized bed internal combustion with after the anthracite of weight portion 40～50 mixes.Situation when the thermal efficiency of boiler and steam production and whole use bituminous coal is approaching.
Aforementioned CFBB also is provided with the biomass fuel charging aperture separately except that the raw coal charging aperture.Living beings waste residues such as above-mentioned wooden saw ash, paper mill sludge enter boiler combustion by mixing through fortune coal belt, raw coal disintegrating machine, feeder with raw coal in the coal canopy.Living beings waste residues such as bark are sent into the boiler combustion internal combustion separately through special-purpose belt, batcher after pulverizing by the waste residue pulverizer, in the boiler combustion process, add raw coal by former coal delivery system to boiler furnace simultaneously.
Beneficial effect of the present invention:
Biomass solid waste residue kind is many in the paper production process, quantity is more, except that a small amount of bark and saw ash can sell urban residents act as a fuel use outside, how many living beings waste residues need carry out landfill, take scholar ground resource, contaminated environment.The present patent application is sent to the CFBB internal combustion with the living beings waste residue, and the heat energy that utilizes biomass combustion to produce can be realized the innoxious of living beings waste residue, and recycling is realized energy-saving and emission-reduction.
To have phosphorus content less because the living beings waste residue is compared with coal, the hydrogen content height, and volatile matter is more, and the living beings waste residue is met thermal decomposition after certain temperature and is folded volatile matter.Has the low advantage of ignition point, with raw coal mixed combustion, the fugitive constituent that can appropriateness reduces raw coal, improve the combustion position of boiler, company is in actual production process, and the boiler of bituminous coal is used in former design, by adding the living beings waste residue, buying is the anthracite of low-volatile partly, cooperates bituminous coal combustion, has reduced production cost.
The paper mill sludge of high-moisture percentage, between raw coal is stored with after raw coal mixes, help improving the moisture content of raw coal on the one hand, reduce airborne dust, the natural evaporation drying that helps mud moisture content on the other hand is through air dry after a while, behind the evaporation section moisture content, send into burning in circulating fluid bed boiler again, can get better effect.
Because of the density of living beings waste residue is low than coal significantly, sulfur content is low, can reduce corrosion and wearing and tearing to boiler, the prolonged boiler cycle of operation with raw coal mixed combustion.
Part bark, waste plastics class waste residue are bulk or strip, and easy Tower Bridge is difficult for feed in storing course of conveying, after it is pulverized, have overcome above difficulty, help storing and being transported to the stove internal combustion.
The specific embodiment:
Embodiment 1: the wooden saw ash that produces in the paper-making pulping melting process, wooden saw ash and the ratio collocation of raw coal in butt weight 30% evenly mix through raw coal disintegrating machine, fortune coal belt, feeder entering boiler combustion in the coal canopy.
Embodiment 2: the wooden saw ash that produces in the paper-making pulping melting process, wooden saw ash and the ratio collocation of raw coal in butt weight 15% evenly mix through raw coal disintegrating machine, fortune coal belt, feeder entering boiler combustion in the coal canopy.
Embodiment 3: bark, waste plastics class waste residue are sent into boiler combustion through special-purpose belt, batcher by independent material inlet after pulverizing by pulverizer.Add raw coal from the boiler coal feeding system in stove simultaneously, living beings and raw coal are in the ratio collocation of butt weight 25%.
Embodiment 4: the paper mill sludge of moisture content 85%, and between storing, raw coal,, behind the evaporation section moisture content, sends into burning in circulating fluid bed boiler again through air dry after a while with after raw coal mixes.Paper mill sludge and raw coal are in the ratio collocation of butt weight 10%.
Embodiment 5: living beings such as bark, waste residue are sent into boiler combustion through special-purpose belt, batcher by independent material inlet after pulverizing by pulverizer, add the raw coal of sneaking into saw ash and mud from the boiler coal feeding system in stove simultaneously.Living beings and raw coal are in the ratio collocation of butt weight 12%.
Certainly, also can in connotation of the present invention, change process conditions, have same effect, also belong to the scope that the present invention asks for protection, so do not repeat.
Claims (5)
1. living beings waste residue processing method, it is characterized in that: one or more in bark, wooden saw ash, paper mill sludge, the plastics class waste residue and raw coal mixed combustion in the circulating fluidized bed combustion coal boiler, the butt percentage by weight of living beings waste residue and raw coal is no more than 30%.
2. living beings waste residue processing method according to claim 1 is characterized in that: wooden saw ash be sent to burning in circulating fluid bed boiler after raw coal mixes, saw grey particle diameter and be no more than 15mm.
3. living beings waste residue processing method according to claim 1, it is characterized in that: one or both mixing in bark, the waste plastics class waste residue, be ground into granular or sheet-like particle, the longest span access location length of particle is no more than 50mm, and the living beings waste residue after the pulverizing is sent in the CFBB and raw coal mixed combustion by conveying device.
4. living beings waste residue processing method according to claim 1 is characterized in that: paper mill sludge is after dehydration, and mass dryness fraction is not less than 15%, after raw coal mixes, sends into the CFBB internal combustion.
5. living beings waste residue processing method according to claim 1, it is characterized in that: the bituminous coal of butt weight portion 50～60 adds the living beings waste residue that mixes raw coal butt weight portion 10～30 and is sent to the recirculating fluidized bed internal combustion with after the anthracite of butt weight portion 40～50 mixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910044588XA CN102042599A (en) | 2009-10-21 | 2009-10-21 | Resource utilization method of biomass waste |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910044588XA CN102042599A (en) | 2009-10-21 | 2009-10-21 | Resource utilization method of biomass waste |
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| CN102042599A true CN102042599A (en) | 2011-05-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157644A (en) * | 2011-12-13 | 2013-06-19 | 中国轻工业长沙工程有限公司 | Pre-treatment process for milling and drying of papermaking waste residues |
| CN103423735A (en) * | 2013-08-13 | 2013-12-04 | 永晟新能源科技（上海）有限公司 | Method for burning biomass particles in a coal blending manner and coal-containing fuel |
| CN105521985A (en) * | 2016-01-19 | 2016-04-27 | 青岛理工大学 | Novel pyrolysis treatment method for chromium slag |
| CN109163333A (en) * | 2018-08-21 | 2019-01-08 | 肖成美 | A kind of solid-state castoff incineration treatment method |
-
2009
- 2009-10-21 CN CN200910044588XA patent/CN102042599A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157644A (en) * | 2011-12-13 | 2013-06-19 | 中国轻工业长沙工程有限公司 | Pre-treatment process for milling and drying of papermaking waste residues |
| CN103157644B (en) * | 2011-12-13 | 2015-06-17 | 中国轻工业长沙工程有限公司 | Pre-treatment process for milling and drying of papermaking waste residues |
| CN103423735A (en) * | 2013-08-13 | 2013-12-04 | 永晟新能源科技（上海）有限公司 | Method for burning biomass particles in a coal blending manner and coal-containing fuel |
| CN105521985A (en) * | 2016-01-19 | 2016-04-27 | 青岛理工大学 | Novel pyrolysis treatment method for chromium slag |
| CN109163333A (en) * | 2018-08-21 | 2019-01-08 | 肖成美 | A kind of solid-state castoff incineration treatment method |
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Application publication date: 20110504 |