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Granular fuel with crop straw and production thereof

A technology of crop straw and pellet fuel, applied in waste fuel, fuel, solid fuel and other directions, can solve the problems of reducing the calorific value of pellet fuel, increasing production cost, increasing waste discharge, etc., achieving less equipment, easy maintenance, and molding rate high effect

Inactive Publication Date: 2008-01-02
张建超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent discloses that crop straw, etc. are crushed and compressed into pellet fuel and its preparation process, but such additives are used to ensure the molding rate and strength of the pellet fuel, which increases the production cost and indirectly reduces the pellet fuel. calorific value, increased waste emissions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a. Naturally drying crop stalks and plant wastes until the moisture content is below 16% (weight);

[0021] b. Use a pulverizer to crush the dried raw materials to a powder below 8mm, with a screen aperture of Φ6-8mm

[0022] c. After adding water to the powder, mix it evenly with a mixer, and control the moisture content to 18% to 22% (weight);

[0023] d. The uniformly mixed material is softened by steam, sent to the granulator for extrusion and granulation, and pressed into particles with a diameter of 6 to 9 mm and a length of 20 to 30 mm, with a water content of 17% to 18% (weight);

[0024] e. Transport the straw particles to the cooler for cooling and screening, so that the temperature of the particles is ≤40°C, the forming rate of the particles is 96%, and the moisture content of the particles is 14%.

[0025] f. Packed into a finished product of 25kg / bag ± 0.2kg in a special polypropylene laminated woven bag.

Embodiment 2

[0027] a. make raw materials with corn stalks and rice stalks, dry naturally until the moisture content is below 16% (weight);

[0028] b. Use a pulverizer to crush the dried raw materials to a powder below 8mm, with a screen aperture of Φ6-8mm;

[0029] c. After adding water to the powder, mix it evenly with a mixer, and control the moisture content to 18% to 22% (weight);

[0030] d. The uniformly mixed material is softened by steam, sent to the granulator for extrusion and granulation, and pressed into particles with a diameter of 6 to 9 mm and a length of 20 to 30 mm, with a water content of 17% to 18% (weight);

[0031] e. Transport the straw granules to the cooler for cooling and screening, so that the granule temperature is ≤40°C, the granule forming rate is 96%, and the granule moisture content is 12%;

[0032] f. Packed into a finished product of 25kg / bag ± 0.2kg in a special polypropylene laminated woven bag.

Embodiment 3

[0034] A. take rice husk as raw material, dry naturally, to moisture content below 16% (weight);

[0035] b. Use a pulverizer to crush the dried raw materials to a powder below 8mm, with a screen aperture of Φ6-8mm;

[0036] c. After adding water to the powder, mix it evenly with a mixer, and control the moisture content to 18% to 22% (weight);

[0037] d. The uniformly mixed material is softened by steam, sent to the granulator for extrusion and granulation, and pressed into particles with a diameter of 6 to 9 mm and a length of 20 to 30 mm, with a water content of 17% to 18% (weight);

[0038] e. Transport the straw granules to the cooler for cooling and screening, so that the granule temperature is ≤40°C, the granule forming rate is 96%, and the granule moisture content is 10%;

[0039] f. Packed into a finished product of 25kg / bag ± 0.2kg in a special polypropylene laminated woven bag.

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Abstract

A crop straw particle fuel and its production are disclosed. The fuel is prepared by drying crop or plant waste under moisture content 16%, crushing them into powder with grain size under 8mm from side-rub multifunctional crusher, mixing one material or several materials with water, steam vaporizing, compression forming from special straw granulating flat die machine, cooling, and packing into particle fuel of which grain size is 6-9mm, length is 20-30mm and moisture content <=14wt%. Its advantages include low cost, high density, heat value and forming rate, simple process and no environmental pollution.

Description

technical field [0001] The invention relates to the application field of biomass energy, in particular to a crop straw granular fuel made from crop straw and a preparation method thereof. Background technique [0002] Biomass energy has always been an important energy source for human survival. Biomass energy is the fourth largest energy source after coal, oil, and natural gas. It is a clean energy that is environmentally friendly and renewable and recyclable. It will become the most important energy in the world in the future. It is of great significance to develop and utilize biomass renewable energy, adapt to the sustainable development of circular economy, promote national economic development and environmental protection. The birth of biomass energy (particle) gasification combustion boiler fully guarantees the output and price of biomass energy particle fuel and enables the industry to develop rapidly. my country's annual production of straw alone reaches 700 million...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/14
CPCY02E50/30
Inventor 张建超杨开域林屹曹斌
Owner 张建超