Production and process method for cornstalk cured fuel in cold region

A technology of corn stalk solidification and molding, which is applied in the direction of biofuel and waste fuel, can solve the problem that it is difficult to ensure the molding rate of corn straw solidification fuel, and achieve the effect of low solidification molding rate, good economic benefits, and increased power consumption

Inactive Publication Date: 2014-06-04
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional corn stalk curing molding is carried out under high temperature and high pressure conditions of temperature 130°C and molding pressure 135MPa. Even under the above conditions, it is difficult to ensure the improvement of the molding rate of corn stalk solidified fuel without adding binders.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Three varieties of cold-region corn, Xianyu 335, Dongnong 253 and Longdan 47, were collected in mid-October in Qinggang County, Heilongjiang Province.

[0015] Put the corn stalks into a pulverizer for crushing until they reach 22-25 cm. Spray and stir the total weight of the crushed corn stalks to the volume ratio of 35:1 to the liter of biogas slurry after fermentation of pure cow dung. After being sealed and covered, put it in the room at 15±5°C for 2 hours, and then use a flat die or ring die pressing mechanism to take a cylindrical shaped fuel block. The moisture content of the fuel block is measured to be 17~19%, and the density is 1390kg / m 3 , with a shear strength of 45N, put 2kg of molding fuel into a plastic bag, then drop it from a height of 2m to the concrete floor, separate the small pieces and fine powders produced by the impact of the drop, and obtain these pieces and powders with unbroken The ratio of particles is <1%, and the calorific value is 17800 k...

Embodiment 2

[0017] Similarly, the corn stalks in the cold region in Example 1 are put into a pulverizer to pulverize them to 22-25 cm, and the total weight of the pulverized corn stalks in kilograms and the volume ratio of the biogas slurry after pure cow dung fermentation are 35:1. Spray and stir, cover with plastic film, seal it and put it on the site at an ambient temperature above 0°C, under direct sunlight for 2 hours, take a cylindrical fuel block with a flat die or ring die pressing mechanism, and measure the moisture content of the fuel block at 17~ 19%, the density is 1421kg / m 3 , with a shear strength of 42N, put 2kg of molding fuel into a plastic bag, then drop it from a height of 2m to the concrete floor, separate the small pieces and fine powders produced by the impact of the drop, and obtain these pieces and powders with unbroken The ratio of particles is <1%, and the calorific value is 18100 kJ / kg.

Embodiment 3

[0019] Similarly, the corn stalks in the cold region in Example 1 are put into a pulverizer to pulverize to 22 to 25 cm, and the total weight of the pulverized corn stalks in kilograms is 35:1 to the volume ratio of the biogas slurry after fermentation of pure pig manure. Spray and stir, cover with plastic film, seal and place at room temperature 15±5°C, after 2 hours, use flat die or ring die pressing mechanism to take cylindrical shaped fuel block, the measured moisture content of fuel block is 17~19% , the density is 1479kg / m 3 , with a shear strength of 39N, put 2kg of molding fuel into a plastic bag, then drop it from a height of 2m to the concrete floor, separate the small pieces and fine powders produced by the impact of the drop, and obtain these pieces and powders with unbroken The ratio of particles is <1%, and the calorific value is 17050 kJ / kg.

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Abstract

The invention discloses a production and process method for a cornstalk cured fuel in cold region, which belongs to the recycle technique of agricultural production wastes. The method comprises the following steps of: step 1, crushing the cornstalk in the cold region, wherein the crushed cornstalk is 22-25 cm long; step 2, spraying and stirring according to a ratio of the total weight of the crushed cornstalk in kilogram to the volume of biogas slurry after excrement of animals is fermented, wherein the ratio is 35:(0.9-1.1); step 3, covering the sprayed fragmented cornstalk obtained in step 2 by a plastic film, and placing the fragmented cornstalk in an environment at 15+ / -5 DEG C for 2 hours, or under direct irradiation of sunshine in an environment at more than 0 DEG C for 2 hours; and step 4, pressing the fragmented cornstalk obtained in step 3 to obtain a cured fuel rod. The method disclosed by the invention scientifically and reasonably utilizes the own physicochemical properties of the cornstalk in cold region, finishes processing of cured fuel without adding any industrial adhesive additive, and has the characteristics of simple technical process, high curing rate, good mechanical property of the fuel rod, and environmental friendliness.

Description

technical field [0001] The invention belongs to the recycling technology of agricultural production waste in rural areas, and mainly relates to a process method for making solidified molding fuel from corn stalks in alpine regions. Background technique [0002] Corn stover is one of the important renewable energy sources. From the perspective of green energy, straw plays an important role in rural energy consumption. my country consumes straw equivalent to 200 million tons of standard coal every year to meet domestic energy needs. Since the combustion efficiency of farmers' stoves is only about 18%, the straw solidification molding technology can make the combustion efficiency of straw reach 90%, which is 4 times higher than the traditional combustion efficiency. It can be seen that the research and promotion of this technology can make biomass solidified briquette fuel enter cities and rural areas conveniently and quickly, replace coal and fuel oil, and thus greatly chang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/44
CPCY02E50/30Y02E50/10
Inventor 孙勇丁宁邢艳硕
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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