Method for preparing formed fuel by using agriculture castoff

A technology of agricultural waste and molded fuel, which is applied in the field of regeneration and treatment of agricultural waste, can solve the problems of increasing fuel production cost, burning slagging of molded products, fuel heat energy loss, etc., and achieves pollution reduction, enhanced combustion activity, and low cost Effect

Inactive Publication Date: 2008-08-13
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molding technology it adopts mainly relies on hot pressing after heating. This method has problems such as high energy consumption and high cost. At the same time, heating will also cause wear of mechanical equipment and heat energy loss of fuel.
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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: select agricultural wastes such as straw, sawdust, wood chips, rice husks, bagasse, etc. to dry naturally to a moisture content of 7.5% wb, and crush the dried agricultural wastes to a particle size of 40mm; mix the crushed agricultural wastes with The papermaking waste liquid is mixed according to the weight ratio of 1000:50, and fully stirred evenly; the above-mentioned mixed material is sent to a stamping molding machine and pressed at room temperature with a pressure of 60MP to form a cylindrical biomass briquette fuel with a diameter of 25mm and a length of 30mm.

Embodiment 2

[0016] Embodiment 2: Select agricultural wastes such as straw, sawdust, wood chips, rice husks, bagasse and so on to be dried naturally to a moisture content of 20% wb, and the dried agricultural wastes are crushed to a particle size of 50mm; the crushed agricultural wastes are mixed with The papermaking waste liquid is mixed according to the weight ratio of 1000:400, and fully stirred evenly; the above-mentioned mixed material is sent to a stamping molding machine and pressed at a pressure of 10MP at room temperature to form a rectangular parallelepiped biomass briquette with a side length of 25×40×100mm.

Embodiment 3

[0017] Embodiment 3: select agricultural wastes such as straw, sawdust, wood chips, rice husks, bagasse, etc. to be naturally dried to a moisture content of 15% wb, and the dried agricultural wastes are crushed to a particle size of 35 mm; the crushed agricultural wastes are mixed with The papermaking waste liquid is mixed according to the weight ratio of 1000:200, and fully stirred evenly; the above-mentioned mixed material is sent to a stamping molding machine at room temperature and pressed at a pressure of 30MP to form a cylindrical biomass briquette fuel with a diameter of 40mm and a length of 80mm.

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Abstract

A process for producing molded fuel by using agricultural waste belonging to a solid-fuel technology field and the objective is to resolve the problem of waste utilization. The technical scheme is showed as follows: straw, sawdust, wood chips, rice crust, bagasse and other agricultural waste and liquid waste of paper are used as raw materials to produce molded fuel by drying, grinding, mixing, and so on. The invention produces molded fuel with agriculture waste and liquid waste of paper as raw materials, not only saving raw materials costs, but also reducing pollution emissions. And the adhesion of some materials in liquid waste of paper are used without heating block, thus no heating loss, but also reducing the abrasion of mechanical equipment and heat loss of raw materials caused by heating. In addition, liquid waste of paper contains 3 to 5 percent of alkaline substances, which can enhance the activity of combustion. Molded fuel produced by using the process provided by the invention which is characterized in flammability, high heat value, non-polluting, low cost, and so on.

Description

technical field [0001] The invention relates to a regeneration treatment method for agricultural waste, in particular to a method for preparing molded fuel by using papermaking waste liquid and agricultural waste mainly straw, and belongs to the technical field of solid fuel. Background technique [0002] Agricultural waste is extremely abundant. Taking my country as an example, about 650 million tons of straw can be produced every year, and it will reach 726 million tons by 2010, equivalent to 500 million tons of standard coal. Because agricultural waste generally has low calorific value, low density, large volume, and is difficult to transport, the thermal efficiency of direct combustion is only 10% to 30%, which restricts the direct utilization of agricultural waste. In recent years, with the continuous improvement of the agricultural economy, the high-grade commodity energy in rural life has gradually increased, and the proportion of straw has become lower and lower. A l...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30
Inventor 阎维平崔宁宁朱予东高正阳
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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