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
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[0021] Example 1: Anti-slagging additives for biomass solid fuels such as cotton stalks and larch
[0022] For cotton stalks, larch and other raw materials containing low Si 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 is mainly It is used to improve the combustion characteristics of molding fuels. Therefore, the anti-slagging additives used for biomass solid molding fuels such as wheat straw and larch are specially made by weight percentage of 15% magnesium carbonate, 20% alumina and 65% calcium carbonate. The composition is uniformly mixed in the drying container, and the anti-slagging additive is added to different biomass raw materials in a proportion of 2%. Analysis of fuel ash content after combustion showed that compared with the control group (no additives), the slagging rate of cotton stalk pellet fuel dropped from 23% to 6%, and the as...
Example Embodiment
[0023] Example 2: Anti-slagging additives for biomass solid fuels such as wheat straw and rice straw
[0024] For wheat straw, rice straw and other raw materials containing generally high Si element and other alkali metal elements, the Si content is basically 20%, the K element content is about 10%, and the slagging rate after combustion is high, so it is used for wheat straw and rice The anti-slagging additive for biomass solid briquettes such as stalks is composed of 20% magnesium carbonate, 25% alumina and 55% calcium carbonate in a special drying container according to weight percentage, and the anti-slagging additive is 3.5% Slag additives are added to different biomass raw materials. After combustion, the ash content of the fuel was analyzed. Compared with the control group (without additives), the slagging rate of wheat straw pellet fuel decreased from 36% to 10%, and the ash melting point reached 1280℃; the slagging rate of rice straw pellet fuel decreased from 25%. % Dr...
Example Embodiment
[0025] Example 3: Anti-slagging additives for biomass solid fuels such as corn stalks and Korean pine
[0026] In view of the high content of Si and other alkali metal elements in corn stalks, red pine and other raw materials, the content of Si is basically 25%, and the content of K is 15%. The slagging rate after combustion is the highest, so it is used for corn stalks, red pine, etc. The anti-slagging additive of biomass solid briquettes is made by mixing 25% magnesium carbonate, 30% alumina and 45% calcium carbonate by weight percentage, and is added at 5% of raw materials such as corn stalks and red pine. Analysis of fuel ash content after combustion showed that compared with the control group (no additives), the slagging rate of Korean pine pellet fuel dropped from 51% to 13%, and the ash melting point reached 1500℃; the slagging rate of corn stover pellet fuel decreased from 48.9 % Dropped to 15.2% and the ash melting point reached 1350°C. The combustion efficiency is incr...
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