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Method for manufacturing green solid fuel by using biomass mixed material

A technology of mixed materials and solid fuels, applied in solid fuels, biofuels, waste fuels, etc., can solve the problems of low energy density, energy waste, and high cost, and achieve the effects of easy processing and conversion, simple process methods, and prevention of pollutants

Inactive Publication Date: 2012-06-27
JIANGSU SIFANG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The amount of biomass produced in my country is huge, and straw biomass, agricultural and forestry wood waste, etc. are seriously wasted every year. The annual production of plastic waste exceeds 12 million tons. The amount of organic solid waste in cities has increased rapidly year by year, but their distribution is relatively scattered. Low energy density, difficult transportation and handling, and high cost
Organic solid waste is mainly composed of carbon and hydrogen elements and has high energy utilization value. However, energy waste, environmental pollution and social problems caused by the failure of these biomasses to be fully utilized in our country become increasingly prominent every year.
[0004] At present, due to the large variety of biomass raw materials, the physical and chemical properties of various types are very different. Whether it is using the heat energy generated by combustion or the energy generated by pyrolysis and gasification, it is difficult to pretreat the raw materials. The equipment is suitable for all ranges of biomass Problems such as low material adaptability and low utilization efficiency
For example: boilers and devices for burning and gasifying straw-like biomass have low combustion and gasification efficiency and poor stability for some forest residues, and also cannot effectively dispose of urban waste plastics and other substances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The steps of the invention include: pulverizing→feeding→heating→cooling→extruding.

[0021] A) Pulverize the biomass mixture to particles with an average diameter of 10mm.

[0022] B) Add 5% water, 20% coal powder, 3% quicklime and 10% sodium carboxymethyl cellulose to the above mixture.

[0023] C) The above mixture was stirred and heated at 250° C. for 1 hour.

[0024] D) The above mixture is then cooled at a cooling rate of 20°C per minute.

[0025] E) Extrude the above mixture into solid fuel.

[0026] Among them, the biomass mixed material is straw biomass, agricultural and forestry wood waste, waste plastic or urban organic solid waste. Simultaneously, the present invention adopts ASTM D514 method to measure the industrial analysis value of solid fuel, and elemental analysis adopts EA1110, CE instrument method. Its calorific value is calculated by the following Dulong formula:

[0027] LHV = HHV -600 (9 H + W ) (1),

[0028] HHV =8100 ...

Embodiment 2

[0032] The steps of the invention include: pulverizing→feeding→heating→cooling→extruding.

[0033] A) Pulverize the biomass mixture to particles with an average diameter of 30mm.

[0034] B) Add 20% water, 20% coal powder, 2% quicklime and 5% sodium carboxymethyl cellulose to the above mixture.

[0035] C) The above mixture was stirred and heated at 150° C. for 3 hours.

[0036] D) The above mixture is then cooled at a cooling rate of 30°C per minute.

[0037] E) Extrude the above mixture into solid fuel.

[0038] Among them, the biomass mixed material is straw biomass, agricultural and forestry wood waste, waste plastic or urban organic solid waste. Simultaneously, the present invention adopts ASTM D514 method to measure the industrial analysis value of solid fuel, and elemental analysis adopts EA1110, CE instrument method. Its calorific value is calculated by the following Dulong formula:

[0039] LHV = HHV -600 (9 H + W ) (1),

[0040] HHV =8100 ...

Embodiment 3

[0044] The steps of the invention include: pulverizing→feeding→heating→cooling→extruding.

[0045] A) Pulverize the biomass mixture to particles with an average diameter of 20mm.

[0046] B) Add 15% water, 30% coal powder, 3% quicklime and 10% sodium carboxymethyl cellulose to the above mixture.

[0047] C) The above mixture was stirred and heated at 200° C. for 2 hours.

[0048] D) The above mixture is then cooled at a cooling rate of 25°C per minute.

[0049] E) Extrude the above mixture into solid fuel.

[0050] Among them, the biomass mixture includes: straw biomass, agricultural and forestry wood waste, waste plastics, and urban organic solid waste. Simultaneously, the present invention adopts ASTM D514 method to measure the industrial analysis value of solid fuel, and elemental analysis adopts EA1110, CE instrument method. Its calorific value is calculated by the following Dulong formula:

[0051] LHV = HHV -600 (9 H + W ) (1),

[0052] HHV =8...

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Abstract

The invention discloses a method for manufacturing a green solid fuel by using a biomass mixed material, and belongs to the technical field of solid fuels manufactured by using biomass. The method comprises the following steps of: crushing, adding, heating, cooling and extruding, namely crushing the biomass mixed material into granules of which average diameter is 10 to 30 millimeters, adding 5 to 20 mass percent of water, 5 to 30 mass percent of pulverized coal, 1 to 3 mass percent of calcined lime and 5 to 10 mass percent of sodium carboxymethylcellulose into the granules, heating for 1 to 3 hours with stirring at the temperature of between 150 and 250 DEG C, cooling the mixture at the cooling rate of 20 to 30 DEG C per minute, and finally extruding the mixture into the solid fuel. The method has the advantages that: many mixtures such as straw biomass, waste plastic, urban organic solid wastes and the like are used as raw materials for low heat treatment, and the green solid fuel with high specific weight, high density and high calorific value is finally manufactured by synergy of the substances; and the green solid fuel is convenient to store, transport and continuously use.

Description

technical field [0001] The invention relates to a method for producing green solid fuel by using biomass mixture materials, in particular to a method for producing green solid fuel with high density and high specificity by using mixtures such as straw biomass, agricultural and forestry wood waste, waste plastics, and urban organic solid waste. The invention discloses a method for value green solid fuel, which belongs to the technical field of producing solid fuel from biomass. Background technique [0002] In recent years, the global demand for energy is increasing, while the fossil fuels, which are the main source of energy, are rapidly decreasing. Therefore, seeking a renewable alternative energy has become the focus of public attention. [0003] The amount of biomass produced in my country is huge, and straw biomass, agricultural and forestry wood waste, etc. are seriously wasted every year. The annual production of plastic waste exceeds 12 million tons. The amount of org...

Claims

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Application Information

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IPC IPC(8): C10L5/44C10L5/40C10L5/46
CPCY02E50/30Y02E50/10
Inventor 段绪强李学林谢传玉常春梅闫海洲豆斌林高猛
Owner JIANGSU SIFANG BOILER
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