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Porous rapid combustion bio-combustible substance particle and preparation process thereof

A bio-combustion and fast-combustion technology, applied in the fuel, petroleum industry, solid fuel and other directions, can solve the problems of unfavorable transportation and storage, low combustion efficiency of biomass fuel, and difficulty in molding.

Active Publication Date: 2018-12-25
安徽冠建新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to facilitate the transportation and storage of biomass fuel, it is generally compressed into dense high-density block and rod-shaped particles, but the air cannot enter the internal structure of the combustible particles, and the phenomenon of insufficient oxygen supply is prone to occur, resulting in low combustion efficiency of biomass fuel. Low, it is difficult to burn completely, and compared with liquid fuels such as diesel, kerosene, ethanol, butanol, biomass fuel has a higher ignition point, and it needs to be in contact with the flame for a long time before it can be ignited
Designing bio-combustible particles into a porous structure can significantly increase the contact area between fuel and air, improve combustion efficiency and combustion speed, but due to the problems of loose structure, difficult molding, and unfavorable transportation and storage of porous biomass fuel, currently, There is still no relevant literature record about porous bio-combustible particles, which is a blank in the domestic manufacturing industry

Method used

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  • Porous rapid combustion bio-combustible substance particle and preparation process thereof
  • Porous rapid combustion bio-combustible substance particle and preparation process thereof
  • Porous rapid combustion bio-combustible substance particle and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A porous and fast-burning bio-combustible particle, comprising the following raw materials in parts by weight:

[0018]

[0019] The preparation process of the above-mentioned porous and fast-burning bio-combustible particles comprises the following steps:

[0020] S1: Put kaolin in 0.2mol / L salicylic acid solution, soak for 3h, then add 0.1mol / LCa(OH) dropwise 2 solution, adjust the pH to 6.5, wash and dry, and calcinate at 500°C for 2 hours under the protection of nitrogen, and then sputter metal tin on the surface of kaolin with a deposition density of 0.4mg / cm 2 , get activated kaolin;

[0021] S2: Crush corn stalks, wheat stalks, cottonseed husks, peanut husks, bagasse, and edible fungus slag to 30 mesh, add ammonia water with a pH of 7.8 and soak for 1 hour, and then steam blast at 0.8 MPa and 130 °C for 6 times, 1.5min each time, after neutralization, washing and drying, the expanded biomass base material is obtained;

[0022] S3: Mix and expand biomass bas...

Embodiment 2

[0024] A porous and fast-burning bio-combustible particle, comprising the following raw materials in parts by weight:

[0025]

[0026] Preparation technology is with embodiment 1, difference is:

[0027] S1: The concentration of salicylic acid is 0.25mol / L, the pH is adjusted to 6.7, the calcination temperature is 600°C, and the deposition density is 0.7mg / cm 2 ;

[0028] S2: The crushing particle size is 35 mesh, the pH of ammonia water is 8.5, the steam explosion pressure and temperature are 1.4MPa and 140°C respectively, and the single explosion time is 1.7min;

[0029] S3: The porosity of the embryo body is 23%.

Embodiment 3

[0031] A porous and fast-burning bio-combustible particle, comprising the following raw materials in parts by weight:

[0032]

[0033] Preparation technology is with embodiment 1, difference is:

[0034] S1: The concentration of salicylic acid is 0.3mol / L, the pH is adjusted to 6.8, the calcination temperature is 700°C, and the deposition density is 1mg / cm 2 ;

[0035] S2: The crushing particle size is 40 mesh, the pH of ammonia water is 9.2, the steam explosion pressure and temperature are 2MPa and 150°C respectively, and the single explosion time is 2min;

[0036] S3: The porosity of the embryo body is 25%.

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Abstract

The invention discloses a porous rapid combustion bio-combustible substance particle and a preparation process thereof. The particle comprises, by weight, 40-50 parts of corn straws, 30-40 parts of wheat straws, 22-30 parts of cotton seed hulls, 18-24 parts of peanut hulls, 25-35 parts of bagasse, 16-20 parts of edible fungi residue, 8-12 parts of activated kaolin, 13-17 parts of gamma-aluminum oxide, 16-20 parts of ammonium bicarbonate, 10-14 parts of polyacrylamide and 1-3 parts of kindling agents. The preparation process of the particle includes the steps: S1 crushing biomass materials, soaking the crushed biomass materials by ammonium hydroxide, and exploding soaked biomass materials by steam; S2 mixing and expanding the biomass materials, the activated kaolin, the gamma-aluminum oxide, the ammonium bicarbonate and the polyacrylamide, performing press forming on the mixed and expanded materials, roasting the formed materials at the temperature of 150 DEG C until the porosity of a green body reaches 20-25%, and spraying the kindling agents. According to the particle, the biomass materials are treated by combining an ammonium hydroxide soaking technology and a steam explosion technology, inner gaps of the biomass materials are enlarged, an irregular porous structure is formed by the aid of thermal decomposition reaction between the ammonium bicarbonate and the polyacrylamide,and complete combustion of fuels is facilitated.

Description

technical field [0001] The invention belongs to the technical field of new energy biomass fuel, and in particular relates to a porous and fast-burning bio-combustible particle and a preparation process thereof. Background technique [0002] Biomass fuel is a block-shaped environmentally friendly new energy produced by processing straw, straw, rice husk, peanut husk, corncob, camellia husk, cottonseed husk, etc., as well as "three leftovers". In order to facilitate the transportation and storage of biomass fuel, it is generally compressed into dense high-density block and rod-shaped particles, but the air cannot enter the internal structure of the combustible particles, and the phenomenon of insufficient oxygen supply is prone to occur, resulting in low combustion efficiency of biomass fuel. Compared with liquid fuels such as diesel, kerosene, ethanol, butanol, biomass fuel has a higher ignition point and needs to be in contact with the flame for a longer time before it can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44C10L9/10
CPCC10L5/445C10L9/10C10L2230/22
Inventor 颜炳玉
Owner 安徽冠建新能源科技有限公司