Biomass fuel for firing shale ceramsite and preparation method thereof

A technology of biomass fuel and shale ceramsite, which is applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problem that it is difficult for biomass fuel to reach the combustion temperature, the calorific value and combustion efficiency of biomass fuel are low, and the maintenance and maintenance problems problems and other problems, to achieve the effect of convenient steam heat treatment, good combustion-supporting effect, and avoiding combustion slagging

Inactive Publication Date: 2019-08-16
宜昌朗天新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of shale ceramsite needs to go through high temperature, roasting and other processes, and the roasting temperature is relatively high, generally requiring a temperature above 900 ° C. The use of traditional coal and other fuels is not only costly, but also pollutes a lot
Although the use of biomass fuel is more environmentally friendly an

Method used

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Examples

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Effect test

preparation example Construction

[0032] The present invention also designs the preparation method of above-mentioned biomass fuel, comprises the following steps:

[0033] 1) Drying the rice husk and sawdust to keep the water content within 12%, and then crushing to particles with a particle size of 20-30mm;

[0034] 2) Mixing the crushed rice husk and sawdust particles in step 1) according to the mass ratio of 70-85% of rice husk and 10-25% of sawdust, and then crushing again to particles with a particle size of less than 5mm;

[0035] 3) heat-treating the crushed rice husk and sawdust mixed particles in step 2) in high-temperature steam above 250°C for 25-30 minutes;

[0036]4) Adding a mass percent of 2-5% combustion-supporting agent to the rice husk and sawdust mixed particles treated in step 3), and then mixing uniformly, the composition of the combustion-supporting agent at least includes 15-25% magnesium nitrate, 15% ~20% magnesium oxide.

[0037] In order to increase the calorific value and combustio...

Embodiment 1

[0041] 1) Drying the rice husk and sawdust to keep the water content within 12%, and then crushing to particles with a particle size of 20-30mm;

[0042] 2) mixing the crushed rice husk and sawdust particles in step 1) according to the mass ratio of 70% rice husk and 25% sawdust, and then crushing again to particles with a particle size of 5mm;

[0043] 3) heat-treating the crushed rice husk and sawdust mixed particles in step 2) in high-temperature steam above 250°C for 25-30 minutes;

[0044] 4) Adding 5% by mass of a combustion accelerant to the rice husk and sawdust mixed particles treated in step 3), and then mixing evenly to finally prepare fuel. The composition of the combustion aid includes 15% magnesium nitrate, 15% magnesium oxide, 40% sodium nitrate and 30% waste oil.

Embodiment 2

[0046] 1) Drying the rice husk and sawdust to keep the water content within 12%, and then crushing to particles with a particle size of 20-30mm;

[0047] 2) Mix the crushed rice husk and sawdust particles in step 1) according to the mass ratio of 85% rice husk and 10% sawdust, and then crush them again to particles with a particle size of 4mm;

[0048] 3) heat-treating the crushed rice husk and sawdust mixed particles in step 2) in high-temperature steam above 250°C for 25-30 minutes;

[0049] 4) Adding 5% by mass of a combustion accelerant to the rice husk and sawdust mixed particles treated in step 3), and then mixing evenly to finally prepare fuel. The composition of the combustion aid includes 25% magnesium nitrate, 20% magnesium oxide, 35% sodium nitrate and 20% waste oil.

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Abstract

The invention relates to a biomass fuel for firing shale ceramsite and a preparation method thereof. The biomass fuel includes rice husk, sawdust and a combustion improver. The biomass fuel comprisesthe following components in percentage by mass: 70-85% of the rice husk, 10-25% of the sawdust and 2-5% of the combustion improver. The rice husk and the sawdust adopt powdery particles with the particle size below 5 mm, and the combustion improver comprises at least 15-25% magnesium nitrate and 15-20% magnesium oxide. The preparation method of the biomass fuel comprises the steps of raw materialdrying, primary crushing, secondary crushing after mixing, high-temperature steam heat treatment, addition of the combustion improver, mixing and the like. The biomass fuel not only has low cost, highheat value and combustion efficiency, but also has the advantages of difficult slagging, less harmful gas emission and the like.

Description

technical field [0001] The invention relates to the technical field of biomass fuels, in particular to a biomass fuel for firing shale ceramsite and a preparation method thereof. Background technique [0002] As the largest man-made building material, concrete is widely used in road construction, bridge construction, building construction and other engineering fields. It is composed of cementitious materials, granular aggregates (also known as aggregates), water, and additives and admixtures added when necessary, prepared in a certain proportion, uniformly stirred, densely formed, cured and hardened. artificial stone. Because closed concrete has no water permeability and air permeability, the surface temperature can reach 40°C to 60°C in summer, which will aggravate the city's "heat island effect" and have a serious impact on the urban environment; while the aggregate of existing concrete generally uses yellow sand However, massive mining of yellow sand will also cause ser...

Claims

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Application Information

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IPC IPC(8): C10L5/44C10L9/10C10L9/12
CPCC10L5/442C10L5/445C10L9/10C10L9/12Y02E50/10Y02E50/30
Inventor 易举然
Owner 宜昌朗天新型建材有限公司
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