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Biomass briquette, especially biomass briquette without binder

A technology of biomass and briquette, which is applied in the direction of biofuel, waste fuel, solid fuel, etc., can solve the problems that coal is difficult to form separately, the strength of briquette is not enough, and the water resistance is not good, so as to meet the requirements of long-distance transportation and open storage, The effect of increasing the temperature and reducing the processing cost

Inactive Publication Date: 2011-09-21
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, there are certain problems in this method, that is, the production area of ​​weakly caking coal and non-caking coal such as low-rank bituminous coal or middle-aged lignite to be formed is high, and only weakly caking coal such as low-rank bituminous coal or middle-aged lignite and non-caking coal in specific areas Coal sticking can achieve the purpose of molding, such as low-rank bituminous coal or middle-aged and old lignite produced in the Hulunbuir area of ​​Inner Mongolia, but it is difficult to use the above-mentioned method for forming coal with low metamorphism in large quantities in Inner Mongolia, and the strength of the formed coal is not enough. Breaks easily during shipping and is not waterproof
[0014] Aiming at the current development status of biomass briquettes and the fact that the low metamorphism coal produced in Inner Mongolia is difficult to form independently, the inventors invented biomass briquettes with good water resistance and high compressive strength to solve the current problem of biomass briquettes. Coal and problems in its preparation

Method used

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  • Biomass briquette, especially biomass briquette without binder
  • Biomass briquette, especially biomass briquette without binder
  • Biomass briquette, especially biomass briquette without binder

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preparation example Construction

[0098] In a specific embodiment, the steps of the method for preparing biomass briquettes of the present invention are: crushing low metamorphism degree coal and biomass, and sieving to below 3mm; mixing and mixing according to the stated ratio after drying; The mixture of pulverized coal and biomass is quickly heated to the set temperature, and then kept for a predetermined time; finally, it is pressurized and molded with a pressurized molding die or molding machine, and demoulded after cooling to obtain biomass briquettes.

[0099] The preparation process of the biomass briquette of the present invention will be described in detail below with reference to the accompanying drawings, wherein FIG. 1 is a schematic diagram of the preparation process of the biomass briquette according to a preferred embodiment of the present invention.

[0100] In a preferred embodiment, the following pair-roll forming machine is used for forming (such as figure 2 and image 3 shown).

[0101]...

Embodiment 1

[0114] The plant biomass used in the biomass briquette raw material is crop straw;

[0115] The raw coal in the biomass briquette is lignite produced in Inner Mongolia.

[0116] Lignite and biomass are proportioned according to the following mass fractions, namely: 80 parts of lignite and 20 parts of biomass. Material particle size: ≤3mm; material moisture: ≤5%.

[0117] The cold compressive strength (i.e. compressive strength) of biomass briquettes measured according to the determination method of industrial briquette cold compressive strength stipulated in T / T748-1997, and the biomass type measured according to the method stipulated in MT / T749-1997 The water resistance of coal (including waterproof time and / or re-dried strength after immersion in water (N / piece)), the calorific value of biomass briquettes measured according to the standard GB / T213-2008.

[0118] Figure 1aIt is the schematic diagram of the preparation process of the biomass briquette of this embodiment of ...

Embodiment 2

[0123] The plant biomass used in the biomass briquette raw material is straw;

[0124] The raw coal in the biomass briquette is long bituminous coal;

[0125] Bituminous coal and biomass are proportioned according to the following mass fractions, namely: 80 parts of long bituminous coal and 20 parts of biomass. Material particle size: ≤3mm; material moisture: ≤5%.

[0126] The cold compressive strength (i.e. compressive strength) of biomass briquettes measured according to the determination method of industrial briquette cold compressive strength stipulated in T / T748-1997, and the biomass type measured according to the method stipulated in MT / T749-1997 The water resistance of coal (including waterproof time and / or re-dried strength after immersion in water (N / piece)), the calorific value of biomass briquettes measured according to the standard GB / T213-2008.

[0127] Figure 1a It is a schematic diagram of the preparation process of the biomass briquette of this embodiment of...

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Abstract

The invention provides a biomass briquette which comprises the following substances, by weight: 50-90 parts of raw coal which is selected from low metamorphic coal and / or medium metamorphic coal, and 10-50 parts of biomass which is selected from herbaceous plant, agriculture waste, forestry biomass, water plant, energy plant or their mixture. The preparation method of the biomass briquette comprises the following steps: fragmenting 50-90 parts of raw coal and 10-50 parts of biomass, screening fine coal and biomass with predetermined granularity through a screening apparatus; according to the above ratio, heating the fine coal and biomass to a predetermined temperature respectively or together; utilizing a press-forming mould or a press-forming machine to get the fine coal and biomass into shape under a predetermined pressure, cooling the briquette after moulding and removing the mould to obtain a biomass briquette product. The biomass briquette in the invention is not added with extra binder and has a simple preparation method. The biomass briquette provided in the invention has high strength, good waterproofness, and satisfies the requirement of long distance transportation and open air storage.

Description

technical field [0001] The invention belongs to the field of clean coal application, and more specifically relates to a biomass briquette, especially a binder-free biomass briquette. Background technique [0002] my country is the second largest energy consumer in the world, and the primary energy is mainly coal. At present, my country's coal production and consumption account for more than 75% of the primary energy composition, becoming the world's largest coal producer and consumer. According to the characteristics of my country's energy resources and social and economic conditions, it can be predicted that for a long time in the future, my country will still be the main producer and consumer of coal. [0003] my country's coal reserves, resources and predicted resources total 5,569.7 billion tons, of which low-grade bituminous coal and lignite account for more than 50% of the coal reserves, and these coal resources are mostly distributed in remote areas such as Inner Mong...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L5/44
CPCY02E50/30Y02E50/10
Inventor 邵俊杰朱书全苏晓辉刘红缨陈元春杨玉立李玉洁
Owner CHNA ENERGY INVESTMENT CORP LTD
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