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Biomass solid formed fuel anti-slagging additive and preparation method thereof

A technology of solid briquette fuel and biomass raw materials, which is applied in the direction of solid fuel, fuel, petroleum industry, etc., to achieve the effect of reducing mass fraction, reducing corrosion speed and improving combustion efficiency

Inactive Publication Date: 2010-07-14
ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an anti-slagging additive for biomass solid briquette fuel and its preparation method, which can solve the problem of slagging in the combustion process of straw-based biomass solid briquette fuel, improve combustion efficiency and ash melting point of briquette fuel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Anti-slagging additives for biomass solid molding fuels such as cotton stalks and larch

[0022] Cotton stalks, larch and other raw materials contain relatively low Si elements and other alkali metal elements, the Si content is basically below 10%, the K element content is about 4%, and the slagging rate after combustion is low. This anti-slagging additive mainly It is used to improve the combustion characteristics of briquettes, so the anti-slagging additives for biomass solid briquettes such as wheat straw and larch are made of 15% magnesium carbonate, 20% alumina and 65% calcium carbonate in a special The composition is uniformly mixed in a dry container, and the anti-slagging additive is added to different biomass raw materials in a proportion of 2%. After combustion, the ash content of the fuel was analyzed. Compared with the control group (no additives), the slagging rate of the cotton stalk pellet fuel dropped from 23% to 6%, and the ash melting point ...

Embodiment 2

[0023] Example 2: Anti-slagging additives for biomass solid molding fuels such as wheat straw and rice straw

[0024] Raw materials such as wheat straw and rice straw contain generally high Si elements and other alkali metal elements. The Si content is basically 20%, and the K element content is about 10%. The slagging rate after combustion is high, so it is used for wheat straw, rice The anti-slagging additive for biomass solid briquettes such as stalks consists of 20% magnesium carbonate, 25% aluminum oxide and 55% calcium carbonate uniformly mixed in a special dry container, and the anti-slagging additive is added in a proportion of 3.5%. Slag additives are added to different biomass feedstocks. After combustion, the ash content of the fuel was analyzed. Compared with the control group (no additives), the slagging rate of the wheat straw pellet fuel dropped from 36% to 10%, and the ash melting point reached 1280°C; the slagging rate of the rice straw pellet fuel decreased f...

Embodiment 3

[0025] Example 3: Anti-slagging additives for biomass solid molding fuels such as corn stalks and Korean pine

[0026]Corn stalks, Korean pine and other raw materials contain relatively high Si elements and other alkali metal elements. The Si content is basically 25%, and the K content is 15%. The slagging rate after combustion is the highest, so it is used for corn stalks, Korean pine, etc. The anti-slagging additive of biomass solid briquette fuel is made by mixing 25% magnesium carbonate, 30% aluminum oxide and 45% calcium carbonate by weight percentage, and is used according to 5% of raw materials such as corn stalks and Korean pine. After combustion, the ash content of the fuel was analyzed. Compared with the control group (no additives), the slagging rate of the Korean pine pellet fuel dropped from 51% to 13%, and the ash melting point reached 1500°C; the slagging rate of the corn stalk pellet fuel decreased from 48.9 % dropped to 15.2%, and the ash melting point reached...

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Abstract

The invention discloses a biomass solid formed fuel anti-slagging additive and a preparation method thereof, which belongs to the technical field of renewable energy sources and is used for solving the problems that straw biomass solid formed fuel has high alkali metal content, is slagged in the combustion process and the like. The anti-slagging additive mainly comprises 15% to 25% of magnesium carbonate, 20% to 30% of alumina and 45% to 65% of the calcium carbonate, different formula ratio is made according to different biomass raw materials; and the anti-slagging additive is added into different biomass raw materials according to the proportion of 1% to 5%. The preparation method comprises the following steps: the calcium carbonate is firstly put into a special container, the container keeps dry, then alumina is added, finally the magnesium carbonate is added, the mixture is ground and evenly mixed for 10 to 15 minutes with the grinding particle size less than 1 mm, and then a finished product is obtained. The additive can solve the problem of slagging in the combustion process of the formed fuel and increases the combustion efficiency of the formed fuel.

Description

technical field [0001] An anti-slagging additive for biomass solid briquette fuel and a preparation method thereof, belonging to the technical field of renewable energy, specifically adding different contents of magnesium carbonate, aluminum oxide, and calcium carbonate to biomass raw materials to solve the problem of straw biomass The material solid molding fuel has a high content of alkali metals, and there are problems such as slagging during combustion. Background technique [0002] my country is rich in crop straw resources and forest resources. According to statistics, the annual output of crops is about 600 million tons per year, equivalent to about 300 million tons of standard coal, and the forestry residue is about 150 million tons. In recent years, with the continuous improvement of the agricultural economic level, the high-grade commercial energy in rural life has gradually increased, and the proportion of straw is also increasing. A large number of discarded stra...

Claims

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Application Information

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IPC IPC(8): C10L9/10
Inventor 田宜水赵立欣孟海波姚宗路孙丽英袁艳文欧阳双平罗娟
Owner ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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