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A kind of biomass particle fuel and preparation method thereof

A technology of biomass particles and biomass raw materials, applied in the direction of biofuels, waste fuels, fuels, etc., can solve the problems of easy slagging and insufficient combustion, and achieve the effects of prolonging the combustion time, sufficient combustion, and avoiding pollution of the environment

Active Publication Date: 2020-06-09
湖北和泰生物能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a biomass pellet fuel and its preparation method, and solve the technical problems that the biomass pellet fuel is prone to slagging and insufficient combustion in the combustion process in the prior art

Method used

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Examples

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preparation example Construction

[0015] This embodiment also provides a method for preparing biomass pellet fuel, comprising the steps of:

[0016] (1) After cleaning and removing impurities from pine wood chips, straw, and plant shells, they are crushed to obtain biomass raw materials with a particle size of ≤15 mm, and the biomass raw materials are dried so that their moisture content is less than 8%;

[0017] (2) Grinding chitosan, calcium oxide and urea until the particle size is within 0.5mm, then adding it to the dried biomass raw material, stirring and mixing evenly; the particle size of chitosan, calcium oxide and urea is less than 0.5mm , the additive is easier to mix evenly with the biomass raw material, and the effect is better under the condition of ensuring less dosage;

[0018] (3) Extruding and granulating the mixed biomass raw materials and additives under the conditions of a temperature of 80-100° C. and a pressure of 50-150 MPa, and obtaining biomass pellet fuel after cooling.

[0019] The ...

Embodiment 1

[0023] This embodiment provides a kind of biomass granular fuel, which is prepared by mixing 100 kilograms of pine wood chips and 0.5 kilograms of additives. The additive is a mixture of chitosan, calcium oxide and urea, and the weight of the additive is 0.5 kilograms of the weight of the biomass raw material. %.

[0024] The present embodiment also provides the preparation method of above-mentioned biomass particle fuel:

[0025] (1) Crush the pine wood chips after cleaning and removing impurities to obtain biomass raw materials with particle size ≤ 15mm, and dry the pine wood chips so that their moisture content is less than 8%;

[0026] (2) Take by weighing 0.09 kilogram of chitosan, 0.33 kilogram of calcium oxide and 0.08 kilogram of urea, mix and pulverize to particle diameter within 0.5mm, then join in the dried pine sawdust in step (1), stir and mix;

[0027] (3) The mixed pine wood chips, chitosan, calcium oxide and urea were extruded and granulated under the conditio...

Embodiment 2

[0029] This embodiment provides a kind of biomass pellet fuel, which is prepared by mixing the mixture of 100 kilograms of pine wood chips and rice straw and 1.5 kilograms of additives. The additive is a mixture of chitosan, calcium oxide and urea, and the weight of the additive is 1.5% by weight of the raw material of the substance.

[0030] The present embodiment also provides the preparation method of above-mentioned biomass particle fuel:

[0031] (1) After cleaning and removing impurities from pine wood chips and rice straw, they are pulverized to obtain biomass raw materials with a particle size of ≤15mm, and drying the pine wood chips and rice straw to make their moisture content less than 8%;

[0032] (2) Take by weighing 0.45 kg of chitosan, 0.825 kg of calcium oxide and 0.225 kg of urea, mix and pulverize to a particle size within 0.5 mm, then add to the dried pine wood chips and rice straw in step (1), stir well mixed;

[0033] (3) The mixed pine wood chips, rice ...

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Abstract

The invention discloses a biomass granular fuel. The fuel comprises a biomass raw material and an additive, wherein the additive is a mixture of chitosan, calcium oxide and urea, and a weight of the additive is 0.5-4.8% of a weight of the biomass raw material. According to the fuel disclosed by the invention, a certain amount of chitosan, calcium oxide and urea are added into the biomass raw material as the additive, so that alkali metal elements in the biomass granular fuel can be fixed, and the problems of dust accumulation and slagging caused by alkali metals contained in the biomass granular fuel can be effectively improved; and addition of the chitosan, the calcium oxide and the urea can increase a contact area of the biomass granular fuel and oxygen, make a combustion reaction more sufficient, and prolong burning time, thereby improving burning efficiency. The invention also provides a preparation method of the biomass granular fuel.

Description

technical field [0001] The invention belongs to the field of biomass fuels, in particular to a biomass particle fuel and a preparation method thereof. Background technique [0002] Using wood chips, bamboo chips, branches, straw, plant shells, etc. as raw materials, through professional machinery, special technology, without any chemical additives, the granular fuel formed by high-pressure and low-temperature compression is collectively called biomass pellet fuel. Biomass pellet fuel has high calorific value and is clean and pollution-free. It is a high-tech environmental protection product that replaces fossil energy. CO released during combustion of biomass pellet fuel 2 Roughly equivalent to the CO absorbed by photosynthesis during its growth 2 , so the greenhouse gas CO of biomass particles 2 For zero emissions. Biomass fuel is a renewable energy source. As long as there is sunlight, the photosynthesis of green plants will not stop, the biomass energy will not be ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/44C10L9/10C10L10/06
CPCC10L5/442C10L5/445C10L9/10C10L10/06C10L2230/22C10L2290/08C10L2290/24C10L2290/28C10L2290/32Y02E50/10Y02E50/30
Inventor 李善学刘新华李治国吕桂生李幼金
Owner 湖北和泰生物能源有限公司
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