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Blue-green algae solid moulded fuel and preparation method thereof

A solid molding fuel and blue-green algae technology, applied in the direction of solid fuel, fuel, biofuel, etc., can solve the problems of difficulty in popularization and transportation, difficulty in collecting hydrogen, difficulty in large-scale utilization, etc., to achieve large-scale industrial production, wide application range, Fast processing effects

Inactive Publication Date: 2015-02-18
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there have been some studies on the energy utilization of cyanobacteria at home and abroad, "A New Method and Application of Highly Efficient Utilization of Cyanobacteria Solar Energy to Produce Hydrogen" (Application No.: 201310478463.4) and "Cyanobacteria Concentration Monitoring System with Microbial Fuel Cell Power Supply" (Application No.: 201010273631.2) patent uses cyanobacteria to produce hydrogen under solar energy, and the patent "A Method for Hydrogen Production by Anaerobic Fermentation Using Water Bloom Cyanobacteria" (Application No.: 201210086578.4) induces the production of hydrogen by shaking at high speed for 6-48 hours. It is difficult to collect hydrogen, and it is difficult to use it on a large scale at present
The patent "A Method for Realizing Cyanobacteria Recycling" (Application No.: 200810023019.2) uses cyanobacteria to make microbial fuel cells. Fuel cells are currently in the research and development stage, and it is difficult to popularize them.
The patent "Technology for Biogas Production by Dry Anaerobic Fermentation of Spirulina, Reed and Rice Straw" (application number: 201410334984.7) uses dry fermentation of cyanobacteria, reed and rice straw for 20 to 40 days to prepare biogas. Biogas is often unstable and takes a long time
"A Method for Producing Bio-Oil from Cyanobacteria" (Application No.: 201310714860.7) reacts dried and pulverized cyanobacteria at 400-600°C (using nitrogen as a protective gas), and finally undergoes gas-solid separation and condensation to obtain biodiesel. High energy consumption in bio-oil process

Method used

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  • Blue-green algae solid moulded fuel and preparation method thereof

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Embodiment 1

[0034] The preparation method of the cyanobacteria solid briquette fuel of the present embodiment, comprises the following steps:

[0035] 1. Drying: Dry the blue-green algae to reduce the water content of the blue-green algae to 10%.

[0036] 2. Crush: crush and sieve the cyanobacteria to obtain the cyanobacteria raw material, and the particle size of the cyanobacteria raw material is ≤5mm.

[0037] 3. Add denitrification and antifungal agents: add calcium propionate according to 8% of the mass of blue-green algae raw materials, and stir evenly to obtain dried blue-green algae raw materials.

[0038] 4. Molding: Under the conditions of molding pressure of 60MPa and molding temperature of 80°C, the dried cyanobacteria raw material is mechanically extruded by a molding machine to become a solid fuel.

[0039] 5. Cooling: Sieve out the unformed fines of the high-temperature solid fuel on a vibrating sieve, and use it to lower the temperature to below 10°C higher than room tempe...

Embodiment 2

[0050] The preparation method of the cyanobacteria solid briquette fuel of the present embodiment, comprises the following steps:

[0051] 1. Drying: Dry the blue-green algae to reduce the water content of the blue-green algae to 12%.

[0052] 2. Crush: crush and sieve the blue-green algae to obtain the blue-green algae raw material, the particle size of the blue-green algae raw material is ≤3mm.

[0053] 3. Add denitrification and antifungal agents: add calcium formate according to 6% of the mass of blue-green algae raw materials, and stir evenly to obtain dried blue-green algae raw materials.

[0054] 4. Molding: Under the conditions of molding pressure of 65MPa and molding temperature of 85°C, the dried cyanobacteria raw material is mechanically extruded by a molding machine to become a solid fuel.

[0055] 5. Cooling: Sieve out the unformed fines of the high-temperature solid fuel on a vibrating sieve, and use it to lower the temperature to below 10°C higher than room tem...

Embodiment 3

[0058] The preparation method of the cyanobacteria solid briquette fuel of the present embodiment, comprises the following steps:

[0059] 1. Drying: Dry the blue-green algae to reduce the water content of the blue-green algae to 8%.

[0060] 2. Crush: crush and sieve the blue-green algae to obtain the blue-green algae raw material, and the particle size of the blue-green algae raw material is ≤4mm.

[0061] 3. Add denitration and antifungal agents: add calcium benzoate according to 5% of the mass of the blue-green algae raw material, and stir evenly to obtain the dried blue-green algae raw material.

[0062] 4. Molding: Under the conditions of molding pressure of 30MPa and molding temperature of 70°C, the dried cyanobacteria raw material is mechanically extruded by a molding machine to become a solid fuel.

[0063] 5. Cooling: Sieve out the unformed fines of the high-temperature solid fuel on a vibrating sieve, and use it to lower the temperature to below 10°C higher than ro...

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Abstract

The invention discloses a blue-green algae solid moulded fuel and a preparation method thereof. The blue-green algae solid moulded fuel is obtained by taking blue-green algae as a raw material, drying the blue-green algae till the moisture rate is 8-15% and then adding a denitration mildew preventive for extrusion forming. The preparation method comprises the following steps: drying; crushing; adding the denitration mildew preventive; and extruding forming. The method disclosed by the invention has the characteristics of low cost, low energy consumption, energy conservation and environment friendliness, high treatment efficiency and the like, is simple and feasible, and is convenient for large-scaled industrial production. The produced solid fuel is convenient to store and transport, high in heat value, high in moulding property, low in percentage of damage, hardly mildewed, high in combustion efficiency, less in pollution, wide in application range and the like.

Description

technical field [0001] The invention relates to the technical field of solid briquette fuel, in particular to a cyanobacteria solid briquette fuel and a preparation method thereof. Background technique [0002] Algae blooms in eutrophic water bodies are a global problem. In the past two decades, with the rapid development of industry and agriculture, the rapid increase of population, and the acceleration of urbanization, a large amount of untreated domestic sewage and industrial and agricultural production wastewater have been discharged into rivers, lakes and seas, seriously polluting the water environment. Nutritization is intensified. The eutrophication of the water body has led to the flooding of many freshwater lakes and the frequent occurrence of red tides in the bay. The toxic substances (algae toxins) released by a large number of cyanobacteria, the odorous substances and organic substances released after the death of cyanobacteria have seriously deteriorated the lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30
Inventor 袁兴中肖智华陈晓红李辉彭馨王思远邵建广曾光明
Owner HUNAN UNIV
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