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Preparation method of high-strength biomass carbonaceous fuel

A biomass charcoal, high-strength technology, applied in the chemical industry, can solve the problems of poor strength and density, difficult to control quality, uneven heat, etc. Effect

Inactive Publication Date: 2015-01-28
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing high-strength biomass carbonaceous fuel, the preparation method of this high-strength biomass carbonaceous fuel should solve the problem of molding in the prior art The method has technical problems of uneven heat, low molding rate, fragility, difficult quality control, and poor strength and density

Method used

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  • Preparation method of high-strength biomass carbonaceous fuel

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Embodiment 1

[0024] First, the sawdust and peanut shells are crushed by a crusher, and the raw materials with a particle size of no more than 1 mm are selected with a sieve, placed in a drying oven, and dried at a temperature of 105 ° C for 2 to 3 hours to control the moisture content of the materials. 7—10%, calculated according to 100g of starch, take 200ml of water, keep warm to 60°C, add 100g of starch, add 2ml of concentrated H 2 SO 4 , 2gKMnO 4 Oxidize for 1 hour, add 100g of water, 1g of quicklime and 0.4g of magnesium oxide (or iron oxide) after fully oxidizing for 1 hour, then add a solution prepared by 8g of NaOH, add 30g of borax after 20 minutes of gelatinization, and finally add water so that the mass fraction of the starch binder reaches The required percentage is 13%. Mix 70% of the above raw materials (choose peanut shells: sawdust = 1:1) with 30% starch binder (starch mass fraction 5.6%), then press and mold on the molding machine and then dry it. Treat the shaped biomas...

Embodiment 2

[0027] First, the sawdust and peanut shells are crushed by a crusher, and the raw materials with a particle size of no more than 1 mm are selected with a sieve, placed in a drying oven, and dried at a temperature of 105 ° C for 2 to 3 hours to control the moisture content of the materials. 7—10%, calculated according to 100g of starch, take 200ml of water, keep warm to 60°C, add 100g of starch, add 2ml of concentrated H 2 SO 4 , 2gKMnO 4 Oxidize for 1 hour, add 100g of water, 1g of quicklime and 0.4g of magnesium oxide (or iron oxide) after fully oxidizing for 1 hour, then add a solution prepared by 8g of NaOH, add 30g of borax after 20 minutes of gelatinization, and finally add water so that the mass fraction of the starch binder reaches The required percentage is 14%. Mix 72.5% of the above raw materials (choose peanut shells: sawdust = 1:1) with 27.5% starch binder (starch mass fraction 5.0%) and then press and mold on the molding machine and then dry it. Treat the shaped...

Embodiment 3

[0030] First, the sawdust and peanut shells are crushed by a crusher, and the raw materials with a particle size of no more than 1 mm are selected with a sieve, placed in a drying oven, and dried at a temperature of 105 ° C for 2 to 3 hours to control the moisture content of the materials. 7—10%, calculated according to 100g of starch, take 200ml of water, keep warm to 60°C, add 100g of starch, add 2ml of concentrated H 2 SO 4 , 2gKMnO 4Oxidize for 1 hour, add 100g of water, 1g of quicklime and 0.4g of magnesium oxide (or iron oxide) after fully oxidizing for 1 hour, then add a solution prepared by 8g of NaOH, add 30g of borax after 20 minutes of gelatinization, and finally add water so that the mass fraction of the starch binder reaches The required percentage is 14%. Mix 75% of the above raw materials (choose peanut shells: sawdust = 1:1) with 25% starch binder (starch mass fraction 4.4%), then press and mold on the molding machine and then dry it. Treat the shaped biomass...

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Abstract

The invention relates to a preparation method of a high-strength biomass carbonaceous fuel. The preparation method comprises the following steps: crushing wood flour and peanut shells, drying, then adding a binder and performing extrusion forming by a thermoforming machine, wherein the forming pressure is 15-25Mpa and the forming temperature is 180-230 DEG C; and demolding, then placing into a carbonization furnace for carbonization, placing the prepared carbon fuel into a ZnCl2 solution with the mass fraction of 12%-25% for soaking, and further placing into an activation furnace for activation so as to prepare the high-strength biomass carbonaceous fuel after activation, wherein the activation temperature is 650-800 DEG C. By adopting the preparation method provided by the invention, the strength and density of the biomass carbonaceous fuel are improved, and the biomass carbonaceous fuel further has high calorific value, easiness in ignition, environmental friendliness, high burnout rate, relatively large specific surface area and porosity and strong adsorption performance, and can be widely used in the fields of metallurgy, environmental friendliness and life.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a renewable energy source, in particular to a preparation method of high-strength biomass carbonaceous fuel and activated carbon. [0002] Background technique [0003] my country is rich in biomass resources, mainly agricultural and forestry residues. It is characterized by low energy density and non-centralized distribution. Biomass waste is mainly used as household fuel, animal feed or buried in the ground as fertilizer, or even burned directly, and the utilization rate decreases. Biomass molding carbonization technology is one of the methods to solve the above problems and effectively utilize biomass resources. At present, biomass molding carbonization technology can be divided into two categories according to the sequence of carbonization: one is carbonization first and then molding, and the other is carbonization first. Carbonized after forming. The technical...

Claims

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Application Information

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IPC IPC(8): C10B53/02C01B31/08
CPCC01B32/382C01B32/384C10B53/02C10B53/08C10B57/06C10B57/10Y02E50/10
Inventor 张守玉侯宝鑫吴巧美郑红俊邓文祥刘大海唐文蛟涂圣康金涛赵孟浩
Owner UNIV OF SHANGHAI FOR SCI & TECH
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