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Coal gangue biomass solid forming fuel and preparation method thereof

A solid briquette fuel, solid fuel technology, applied in solid fuels, biofuels, waste fuels, etc., can solve the problem of wasting the effective thermal components of coal gangue, achieve good social benefits, environmental protection benefits, economic benefits, and stable combustion calorific value. Effect

Inactive Publication Date: 2010-08-18
童风
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, coal gangue in various parts of our country is mainly used in the production of building materials such as gangue cement, lightweight aggregate of concrete, refractory bricks, production of chemical products such as crystalline aluminum chloride and water glass, and extraction of precious and rare metals, and some are used as waste Although these utilization methods also utilize the main components of coal gangue to achieve the purpose of turning waste into treasure, they waste the effective heat components in coal gangue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] After pulverizing 400kg (weight percent: 40%) of coal gangue with a calorific value higher than 2000 kcal, mix it with 500kg (weight percent: 50%) of Eupatorium adenophorum, water hyacinth, weed stems, One or more agricultural organic wastes in crop stalks, peanut shells, grain bran, wheat bran, sawdust, edible fungus residue, and 50kg (weight percentage: 5%) selected from salt, lime, calcium carbonate , heavy oil, sodium nitrate, potassium permanganate, sodium carbonate, potassium oxide, sodium nitrite, sodium hypochlorite, magnesium carbonate, one or more combustion aids, and 50kg (% by weight: 5%) of clay and The binder of polyvinyl alcohol is mixed evenly to obtain a mixture, and then the mixture is made into a granular, columnar, spherical, block or rod-shaped solid material through a molding machine, and finally dried naturally, screened, and measured for packaging.

Embodiment 2

[0032] After pulverizing 600kg (weight percent: 60%) of coal gangue with a calorific value higher than 2000 kcal, mix it with 350kg (weight percent: 35%) of Eupatorium adenophorum, water hyacinth, weed stems, One or more agricultural organic wastes in crop stalks, peanut hulls, grain bran, wheat bran, sawdust, edible fungus residue, and 25kg (weight percentage: 2.5%) selected from salt, lime, calcium carbonate , heavy oil, sodium nitrate, potassium permanganate, sodium carbonate, potassium oxide, sodium nitrite, sodium hypochlorite, magnesium carbonate, one or more combustion accelerants, and 25kg (weight percent: 2.5%) selected from clay and The binder of polyvinyl alcohol is mixed evenly to obtain a mixture, and then the mixture is made into a granular, columnar, spherical, block or rod-shaped solid material through a molding machine, and finally dried naturally, screened, and measured for packaging.

Embodiment 3

[0034] After pulverizing 850kg (weight percentage: 85%) of coal gangue with a calorific value higher than 2000 kcal, mix it with 100kg (weight percentage: 10%) of Eupatorium adenophorum, water hyacinth, weed stems, One or more agricultural organic wastes in crop stalks, peanut shells, grain bran, wheat bran, sawdust, edible fungus residue, and 40kg (weight percentage: 4%) selected from salt, lime, calcium carbonate , heavy oil, sodium nitrate, potassium permanganate, sodium carbonate, potassium oxide, sodium nitrite, sodium hypochlorite, magnesium carbonate, one or more combustion accelerants, and 10kg (percentage by weight: 1%) selected from clay and The binder of polyvinyl alcohol is mixed evenly to obtain a mixture, and then the mixture is made into a granular, columnar, spherical, block or rod-shaped solid material through a molding machine, and finally dried naturally, screened, and measured for packaging.

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Abstract

The invention discloses a coal gangue biomass solid briquettes fuel, which comprises the following components in percentage by weight: 40 to 85 percent of coal gangue with the combustion heat value higher than 2,000 kilocalories, 10 to 50 percent of agricultural organic waste, 1 to 5 percent of combustion improver, and 1 to 5 percent of adhesive. The method for preparing the coal gangue biomass solid fuel comprises the following steps: crushing the coal gangue with the combustion heat value higher than 2,000 kilocalories; and adding the agricultural organic waste, the combustion improver, and the adhesive in a certain proportion to directly produce the coal gangue biomass solid forming fuel with a stable combustion value by adopting forming machinery. The solid forming fuel is prepared by reasonably using a large quantity of agricultural organic waste and the coal gangue in a certain proportion; and the combustion heat value is stable. The biomass solid forming fuel can be used as the fuel of boilers, stoves and other combustion devices, and has good social benefits, environmental protection benefits, and economic benefits.

Description

technical field [0001] The invention relates to a solid fuel, in particular to a coal gangue biomass solid molding fuel related to the harmless and resourceful utilization of coal gangue and a preparation method thereof. Background technique [0002] Coal gangue is the solid waste discharged during the coal mining process and coal washing process. It is a kind of black-gray rock with low carbon content and harder than coal that is associated with the coal seam during the coal formation process. It is carbonaceous and argillaceous. A mixture of rocks with a low calorific value. Generally, it contains 20%-30% carbon, and its main component is Al 2 o 3 , SiO 2 , also contains varying amounts of Fe 2 o 3 , CaO, MgO, Na 2 O, K 2 O.P 2 o 5 , SO 3 And trace rare elements (gallium, vanadium, titanium, cobalt). [0003] From the perspective of coal mining, China produces 100 million coal every year and discharges about 14 million tons of gangue; from the perspective of coa...

Claims

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Application Information

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IPC IPC(8): C10L5/48C10L5/44
CPCY02E50/30Y02E50/10
Inventor 童风
Owner 童风
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