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Anti-sintering biomass fuel particle and preparation method thereof

A biomass fuel and anti-sintering technology, which is applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of bed material damage to bed fluidization, sintering, boiler life and thermal efficiency reduction, etc., to achieve low alkaline earth metal content, woody The effect of high element content and long burning time

Active Publication Date: 2014-03-26
龙门县景龙生物能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the process of biomass combustion, because biomass contains more water and alkaline metal substances (especially crop straw), it is easy to cause ash accumulation and slagging to damage the combustion bed during combustion, and sintering may also occur.
High alkali metal content (K, Na) in biomass leads to low ash melting point of biomass, which brings many problems to the combustion process
In the process of combustion and utilization, high alkali metal content is an important factor that causes ash, slagging and corrosion on the heated area of ​​the boiler, which will directly reduce the life of the boiler and reduce thermal efficiency; at the same time, high alkali metal content is also easy to cause the agglomeration of bed materials , Slagging destroys the fluidization in the bed and deteriorates the combustion conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of anti-sintering biomass fuel particle, by weight percentage:

[0039] Larch Bark 32%; Olive Kernel Shell 40%; Bamboo Chips 26%; Aluminum Oxide 1%, Titanium Dioxide 1%. The lignin content of the bark is 28-35%; the lignin content of the bamboo chips is 23-32%. The moisture content of the bark≦8; the moisture content of the fruit shell and bamboo chips≦5%. The K of described bark, nut shell, the content of Na≦3%.

[0040] The preparation method is:

[0041] a) Weighing: weigh bark, nut shells, bamboo chips, and acid oxides in proportion;

[0042] b) Pulverization: pulverize the bark, nut shells and bamboo chips in step a respectively;

[0043] c) Screening and drying: drying the powder materials obtained in step b respectively, and simultaneously removing larger volumes of incompletely pulverized components, and controlling the moisture content of bark, nut shells, and bamboo chips;

[0044] d) Mixing: the dried bark, nut shells, bamboo chips, acid oxides an...

Embodiment 2

[0048] A kind of anti-sintering biomass fuel particle, by weight percentage:

[0049] Larch bark 26%; olive shell 48%; bamboo chips 25%; aluminum oxide 0.2%, titanium dioxide 0.8%. The lignin content of the bark is 28-35%; the lignin content of the bamboo chips is 23-32%. The moisture content of the bark≦8; the moisture content of the fruit shell and bamboo chips≦5%. The K of described bark, nut shell, the content of Na≦3%. The preparation method is the same as in Example 1.

Embodiment 3

[0051] A kind of anti-sintering biomass fuel particle, by weight percentage:

[0052] Larch bark 42%; olive shell 34%; bamboo chips 22%; aluminum oxide 1.5%, titanium dioxide 0.5%. The lignin content of the bark is 28-35%; the lignin content of the bamboo chips is 23-32%. The moisture content of the bark≦8; the moisture content of the fruit shell and bamboo chips≦5%. The K of described bark, nut shell, the content of Na≦3%. The preparation method is the same as in Example 1.

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PUM

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Abstract

The invention relates to the field of biomass fuels, and concretely relates to an anti-sintering biomass fuel particle and a preparation method thereof. The anti-sintering biomass fuel particle comprises 25-45wt% of tree bark, 30-50wt% of kernel shell, 20-45wt% of bamboo sawdust and 1-3wt% of an acidic oxide. The biomass fuel has a low water content, a low alkaline earth metal content and a high lignin content; and compared with routine biomass fuel particles obtained after the compression molding of straws, the biomass fuel obtained in the invention has the advantages of high fuel value, long combustion time, difficult residue bonding by adjusting the particle properties through the added acidic oxide, and no emission of harmful gases or acidic gases after the combustion.

Description

[0001] technical field [0002] The invention relates to the field of biomass fuel, in particular to an anti-sintering biomass fuel particle and a preparation method thereof. [0003] Background technique [0004] At present, most of the fuels used by people are fossil energy such as coal, oil, and natural gas, which are non-renewable resources. They will gradually be exhausted under the large-scale exploitation of human beings, and a large amount of toxic gases will be emitted into the air during combustion, causing air pollution. Serious pollution, for this reason human beings are looking for renewable clean fuels to replace. [0005] Agricultural and forestry wastes, such as straw, sawdust, bagasse, rice bran, etc., are used as biomass fuels as green energy, fuels encouraged by national policies, and have the following characteristics: carbon dioxide absorbed through photosynthesis during biomass growth and carbon dioxide released by combustion The total amount is equiv...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30
Inventor 叶杰珍
Owner 龙门县景龙生物能源有限公司
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