CN104232232B - Novel method for utilizing blue-green algae in Taihu lake - Google Patents
Novel method for utilizing blue-green algae in Taihu lake Download PDFInfo
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- CN104232232B CN104232232B CN201410499839.4A CN201410499839A CN104232232B CN 104232232 B CN104232232 B CN 104232232B CN 201410499839 A CN201410499839 A CN 201410499839A CN 104232232 B CN104232232 B CN 104232232B
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- green algae
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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 novel method for utilizing blue-green algae in the Taihu lake, and belongs to the field of waste resource utilization and biomass energy. The method comprises the following steps: dewatering and drying the blue-green algae in the Taihu lake until the water content of the blue-green algae in the Taihu lake is 8 to 25 percent; dewatering and drying other biomass waste until the water content of the other biomass waste is 8 to 25 percent, crushing the dewatered and dried biomass waste to 5 to 10 mm; uniformly mixing 20 to 100 percent of the dried blue-green algae in the Taihu lake and other 0 to 80 percent of biomass raw materials, all by dry weight, and performing extrusion forming on the mixture by using a forming machine at the forming pressure of 100 to 300 MPa and the forming temperature of 70 to 170 DEG C to obtain solid fuel. The forming method for a mixed biomass fuel, disclosed by the invention, has the characteristics that 1) the method is simple, feasible and environment-friendly, the treatment efficiency is high, the cost of raw materials is low, and large-scale industrial production is facilitated; 2) the blue-green algae in the Taihu lake is added into the solid fuel, so that the forming is facilitated, and the combustion characteristics of the fuel are improved; 3) the recycling of the blue-green algae in the Taihu lake is realized, and meanwhile, the source of the raw materials of the solid fuel is enriched.
Description
Technical field
The invention belongs to changing rejected material to useful resource and biomass energy source domain, it is related to a kind of method of Taihu Lake blue algae resource,
Taihu Lake blue-green algae and other biomass castoffs are specifically referred to for raw material prepares solid fuel by extrusion forming.
Background technology
When blue-green alga bloom breaks out, the water surface forms thick blue-green water bloom, and people's life and ecological environment are caused greatly
Harm：1) water turbidity increase, water colour is deepened, and transparency declines, and influences water quality；2) some blue-green algaes are in growth or decomposable process
Niff is sent, tourist sight is influenceed；3) dissolved oxygen in water can be largely consumed during blue algae growth, makes fish death by suffocation
Die, reduce and destroy aquatic products local flavor and quality；4) blue-green alga bloom causes that aquatic vegetation disappears, under bio-diversity
Drop, original structure of community is destroyed, and the material circulation and energy flow in original water ecosystem occur obstacle, finally lead
Cause whole water ecosystem unbalance；5) Cells of Blue-green Algae is contained within some Algae toxins, can be outside when Cells of Blue-green Algae is dead to rot
Algae toxins are discharged, the toxin of releasing has considerable influence to biological liver function, and the water containing Microcystin is drunk for a long time can
Induced hepatocellular carcinoma, the carcinoma of the rectum directly threatens human health.
When blue-green algae large-scale outbreak, salvaging is still to solve the most effective and most viable method of Crises of blue-green alge bloom, not only can be with
The density of algae is reduced, the nutriments such as nitrogen and dish can also be taken away, mitigate the problem of body eutrophication, but salvage blue-green algae such as
Fruit is not dealt carefully with, and will trigger a series of problems：1) blue-green algae moisture content (~90%) has just been salvaged very high, transport inconvenience, this increase
The burden of freight and subsequent treatment expense；2) arbitrarily placing algae can take substantial amounts of soil；3) algae is arbitrarily placed
Trigger the environmental problems such as stench；4) noxious materials such as the Algae toxins that blue-green algae also contains are salvaged, eating by mistake can cause hepatosis, very
To liver cancer, if by rain drop erosion into rainwash or the water that permeates the ground, secondary pollution problem can be caused.It is reported that, blue-green algae is big
Amount burst period average thickness reaches 2~4 centimetres.Running water is not used to drink completely, washes in green and with stronger stink
Gargle.While daily life is influenceed, the outburst of blue-green algae has also had a strong impact on the normal operation of Wuxi tourist industry.It is a large amount of to rot
And distribute the blue-green algae of foul smell and be deposited in bank, make surrounding nearly all sight spot in Taihu Lake all have to suspend business, cause difficulty
With the loss estimated.Shown according to Jiangsu Department of Water Resources of Shanxi Province statistics, blue-green algae salvaging amount in Taihu Lake was 970,000 tons within 2011, than 2010
Increase nearly 300,000 tons.Therefore, the problem that such substantial amounts of blue-green algae avoids secondary pollution from turning into how is processed in time.How and
When effectively to dispose the blue-green algae of salvaging be one of key issue for being faced during Taihu Lake bloom blue algae is administered.Must fight each other on list
Blue-green algae carries out effective treatment disposal, realizes the resource of blue-green algae, innoxious.It is main to the research and utilization of algae both at home and abroad at present
Research in terms of concentrating on to blue-green algae improvement is more, but the research that it is comprehensively utilized is relatively lagged behind.
At present, utilized on blue algae resource both at home and abroad and be substantially carried out following research and development：1) anaerobic fermentation, uses
Blue-green algae anaerobic fermentation technology produces biogas and fertilizer, but fermentation period is long, and floor space is big；2) aerobic compost, it is main to include indigo plant
Algae compost and blue-green algae directly make fertilizer；3) bioactivators such as phycocyanin are extracted；4) blue-green algae fodder, mainly including blue-green algae
Treatment post-processing is into feed or extracts amino acid as word feed additives etc., but there is Microcystin residual, blue-green algae conversion
The limiting factor such as rate and blue-green algae broken wall cost.It can be seen that, the new utilization for seeking to salvage blue-green algae discarded object is still Current resource
The focus of research and development.
The content of the invention
The purpose of the present invention is directed to the effective Utilizing question of Taihu Lake blue-green algae after salvaging, there is provided it is a kind of it is simple and easy to apply, be easy into
Type and avoid the solid fuel forming production process of blue-green algae secondary pollution.
The technical solution adopted for the present invention to solve the technical problems is as follows：
Taihu Lake blue-green algae and other biomass castoffs are dehydrated to water content 8-25% respectively；
Other dry or air-dry biomass dries to water content 8-25%, mechanical crushing to 5-10mm before crushing；
10-100% Taihu Lake blue-green algae siccative and other 90-0% biomass materials are mixed by dry weight；
Material is 100-300MPa in briquetting pressure by forming machine and forming temperature is 70-170 DEG C of shaping after mixing, is obtained
Obtain biomass solid particle fuel.
Taihu Lake blue-green algae described in this programme includes fresh salvaging, between one section of childhood of stacking or air-dried.Fresh salvaging
Taihu Lake blue-green algae through mechanical dehydration obtain water content<90% algae mud, is dehydrated to 50%-70% using screw extrusion to algae mud,
Then tunnel type micro wave drying system or fluidized bed drying to water content 8-25% are passed through again；
Other biomass castoffs refer to useless agricultural crop straw in addition to the blue-green algae of Taihu Lake, agricultural product production and processing in this programme
Gurry, various herbaceous plant, forest tree castoff, kitchen garbage, animal wastes or their mixing；
Into graininess, a diameter of 8mm, length is 10-80mm, Particle Breakage to biomass solid fuel prepared by this programme
Rate is 2%, and moisture content is 9-13%, and solid molding fuel density is 0.6-1.4 × 103kg/m3, calorific value is 14-24MJ/kg.
Compared with prior art, advantage of the invention is that：
1. blue-green algae and other biomass are mixed with solid fuel by the present invention, realize algae discarded object truly
Harmless treatment and biomass complete utilization, solve the problems, such as to salvage the mishandling easy secondary pollution of blue-green algae, it also avoid at present
Common algae resource method can not be utilized effectively because of Algae toxins residue problem.
2. blue-green algae dry base heat value is about in 20MJ/kg, higher than other common biomass castoffs such as kitchen garbage, animal excreta
Just, the calorific value of straw or like vegetable and agricultural crop straw, so the calorific value of solid molding fuel can be significantly improved after addition blue-green algae.
3. containing up to 20% lipid in blue-green algae of the invention, as " lubricant " in biomass fuel preparation；
Contribute to the water imbibition of reduction formation solid fuel, convenient transport and storage.
4. containing the up to crude protein of 40-55% and some soluble polysaccharides in blue-green algae of the invention, in compressed fuel
The effect of binding agent is served, therefore need not additionally add binding agent.
The advantage of above several respects highlights solid fuel described in this patent has that energy consumption is low, efficiency in forming process
It is high, the features such as yield is high, former is stable, consumable accessory long lifespan.So as to reduce production cost, it is easy to extensive work
Industry metaplasia is produced.
Specific embodiment
Below in conjunction with specific preferred embodiment, the invention will be further described, but not thereby limiting the invention
Protection domain.
Embodiment 1
The present embodiment is to prepare solid fuel as mixed material extrusion forming to air-dry blue-green algae and shine dry rice straw, including following
Step：
A. raw material and treatment：Straw moisture content 12% is air-dried, calorific value is 16.8MJ/kg, directly through mechanical crushing to particle diameter
≤10mm；The algae mud water content 14% dried, breaks up caking youngster by hand.
B. mixing and shaping：Will after the two blue-green algae % in mass ratio/straw %=50/50 mixes, sealing preserve 2 days so that
Humidity is as uniform as possible, and will mix desiccation material extruding by ring die forming machine is molded, and obtains solid molding fuel.
Solid molding fuel obtained by the present embodiment is graininess, and a diameter of 8mm, length is 10-50mm, Particle Breakage rate
It is 2%, moisture content is 9%, calorific value is 18.4MJ/kg, solid molding fuel density is 0.9 × 103kg/m3。
Embodiment 2
The present embodiment is to prepare solid fuel as mixed material extrusion forming to air-dry blue-green algae and dry cedar sawdust, including following
Step：
A. raw material and treatment：Dry cedar sawdust is directly through mechanical crushing to particle diameter≤10mm；The algae mud water content 14% dried,
Caking youngster is broken up by hand.
B. mixing and shaping：Will after the two blue-green algae % in mass ratio/wood chip %=50/50 mixes, sealing preserve 2 days so that
Humidity is as uniform as possible, and will mix desiccation material extruding by ring die forming machine is molded, and obtains solid molding fuel.
Solid molding fuel obtained by the present embodiment is graininess, and a diameter of 8mm, length is 50-80mm, Particle Breakage rate
It is 1%, moisture content is 9%, calorific value is 20.3MJ/kg, solid molding fuel density is 1.1 × 103kg/m3。
Embodiment 3
The present embodiment is to prepare solid fuel as mixed material extrusion forming to air-dry blue-green algae and dry and soft wood chip, including following
Step：
A. raw material and treatment：Dry and soft wood chip is directly through mechanical crushing to particle diameter≤5mm；The algae mud water content 14% dried,
Caking youngster is broken up by hand.
B. mixing and shaping：Will after the two blue-green algae % in mass ratio/wood chip %=80/20 mixes, sealing preserve 2 days so that
Humidity is as uniform as possible, and will mix desiccation material extruding by ring die forming machine is molded, and obtains solid molding fuel.
Solid molding fuel obtained by the present embodiment is graininess, and a diameter of 8mm, length is 10-40mm, Particle Breakage rate
It is 1%, moisture content is 9%, calorific value is 22.6MJ/kg, solid molding fuel density is 1.3 × 103kg/m3。
Embodiment 4
The present embodiment is to prepare solid combustion as mixed material extrusion forming to salvage blue-green algae, edible fungi residue and cornstalk
Material, comprises the following steps：
A. raw material and treatment：Machinery salvages blue-green algae through the algae mud water content 86% after filter-press dehydration, using preceding by spiral
Extruding is to water content 40%, then carries out microwave drying to water content 12%；Edible fungi residues and cornstalk meal are broken to 10-20mm and lead to
Cross microwave drying to water content 9%.
B. mixing and shaping：After three's blue-green algae/bacteria residue in mass ratio/corn stalk=40/30/30 is mixed, sealing preserve 2
It will mix desiccation material extruding and be molded so that humidity is as uniform as possible, by ring die forming machine, obtain solid molding fuel.
Solid molding fuel obtained by the present embodiment is graininess, and a diameter of 8mm, length is 10-40mm, Particle Breakage rate
It is 1%, moisture content is 10%, calorific value is 23.6MJ/kg, solid molding fuel density is 1.4 × 103kg/m3。
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example.All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It is noted that for the art
Those of ordinary skill for, improvements and modifications under the premise without departing from the principles of the invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. the new method of a kind of utilization Taihu Lake blue-green algae, it is characterised in that its step is：
1) Taihu Lake blue-green algae and other biomass castoffs are dehydrated to water content 8-25% respectively；
2) other biomass castoff mechanical crushings are to 5-10mm；
3) by dry weight by 40-80% Taihu Lake blue-green algae siccative and other 20-60% other biomass castoffs mixings；
4) material is 100-300MPa and 70-170 DEG C of shaping of forming temperature in briquetting pressure by forming machine after mixing, and is given birth to
Material solid granular fuel；Described other biomass castoffs refer to agricultural crop straw, agricultural product production in addition to the blue-green algae of Taihu Lake
One or more of processing waste, various herbaceous plant, forest tree castoff, kitchen garbage and animal wastes.
2. the new method of a kind of utilization Taihu Lake blue-green algae according to claim 1, its Taihu Lake blue-green algae refer to fresh salvaging,
Natural air drying, dried or artificial dehydration.
3. the new method of a kind of utilization Taihu Lake blue-green algae according to claim 1, it refers to adopt that Taihu Lake blue-green algae manually dehydrates
With microwave drying or fluidized bed drying to water content 8-25%.
4. method according to claim 3, it is characterised in that：Microwave drying time 20s-5min, raw aqueous after drying
Divide 8-25%；Fluidized bed drying time 5-25min, moisture content of material 8-25% after drying.
5. the biomass solid particle fuel that prepared by method according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410499839.4A CN104232232B (en) | 2014-09-25 | 2014-09-25 | Novel method for utilizing blue-green algae in Taihu lake |
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| CN201410499839.4A CN104232232B (en) | 2014-09-25 | 2014-09-25 | Novel method for utilizing blue-green algae in Taihu lake |
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| CN104232232A CN104232232A (en) | 2014-12-24 |
| CN104232232B true CN104232232B (en) | 2017-05-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281540A (en) * | 2015-06-05 | 2017-01-04 | 许成荫 | A kind of biomass environment-friendly fuel |
| CN107365616A (en) * | 2017-07-17 | 2017-11-21 | 天津大学 | A kind of preparation method of biomass molding fuel additive |
| CN110016375A (en) * | 2018-07-05 | 2019-07-16 | 中国科学院水生生物研究所 | A kind of algal biomass fuel and its preparation method and application |
| CN112174467A (en) * | 2020-09-04 | 2021-01-05 | 无锡国联环保科技股份有限公司 | Blue algae mud recycling method |
| CN114933926B (en) * | 2022-06-20 | 2023-04-25 | 无锡市检验检测认证研究院 | Device and method for converting blue algae into biomass black particles |
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| CN1742073A (en) * | 2003-01-28 | 2006-03-01 | 汉斯·维尔纳 | Method and device for producing fuels from compressed biomass and use of said fuels |
| CN101148621A (en) * | 2007-11-07 | 2008-03-26 | 华东理工大学 | Composition containing blue algae and use thereof |
| US20110056124A1 (en) * | 2009-03-02 | 2011-03-10 | Heilmann Steven M | Algal Coal and Process for Preparing Same |
| CN103396857A (en) * | 2013-06-25 | 2013-11-20 | 雷学军 | Device and method for planting and comprehensive utilization of fast-growing plants to replace fossil energy |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1742073A (en) * | 2003-01-28 | 2006-03-01 | 汉斯·维尔纳 | Method and device for producing fuels from compressed biomass and use of said fuels |
| CN101148621A (en) * | 2007-11-07 | 2008-03-26 | 华东理工大学 | Composition containing blue algae and use thereof |
| US20110056124A1 (en) * | 2009-03-02 | 2011-03-10 | Heilmann Steven M | Algal Coal and Process for Preparing Same |
| CN103396857A (en) * | 2013-06-25 | 2013-11-20 | 雷学军 | Device and method for planting and comprehensive utilization of fast-growing plants to replace fossil energy |
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Inventor after: Sun Fubao Inventor after: Zhang Zhenyu Inventor after: Tang Song Inventor after: Rao Jingxin Inventor before: Sun Fubao Inventor before: Zhang Zhenyu Inventor before: Tang Song |
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Granted publication date: 20170524 Termination date: 20190925 |