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Fuel product and process

A product, the technology of fuel spheres, applied in the direction of fuel, solid fuel, petroleum industry, etc., can solve the problems of increasing the total cost of forming coal briquettes, reduce operating costs, reduce the need for pretreatment or mixing, and avoid premixing or treatment the effect of the demand

Inactive Publication Date: 2007-07-11
SOLSYS
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Problems solved by technology

To form a suitable crushable material, the peat must be efficiently dried (usually two or three times) as well as chopped and ground, which adds to the overall cost of forming briquettes

Method used

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  • Fuel product and process
  • Fuel product and process

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Embodiment Construction

[0072] Fine coal recovery systems are a common part of modern coal processing operations, but cost-effective high-tonnage solutions are required for handling wet coal fines produced by different beneficiation processes.

[0073] The high capital and operating costs of briquetting plants prevent multiple operations from maximizing their coal reserves. Briquetting is a method in which certain types of materials are compressed under high pressure. Compression of the material results in a rise in temperature which causes the raw material to release various viscous substances.

[0074] There are inexpensive hydraulic briquetting machines that are designed to be operated for only a few hours per day. Larger mechanical presses are used for large-scale installations producing hundreds of kilograms per hour, but require about 200kWh of energy input (for drying and processing) per metric ton of briquette material. In countries where coal prices are already low, the cost of the briquet...

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Abstract

A process for producing fuel pellets is described. The pellets are obtainable from a particulate carbon-based material and a binder, the process comprising the following steps: admixing the material and binder, and agglomerating the so-formed mixture by tumbling. The tumbling action, such as in a rotary drum, serves to agglomerate the particles and bind the mixture into the pellets, usually with a variable size distribution. No mechanical compression force is required, and with the binders used, the process can be carried out at ambient temperature. The process provides a simple but efficient process for using waste carbon-based materials, and forming a useable fuel product, which is easily transportable and efficiently combustible. Rotating drum or pan agglomerators are relatively low cost to build, and are capable of very high tonnage throughputs. Customised products can be produced and the process enhances the economics of ash and sulphur removal in coal upgrade plants.

Description

technical field [0001] The present invention relates to fuel products and methods for their manufacture. Background technique [0002] A persistent problem in many solid-based fuel extraction processes is the disposal of waste "fines" material. About 10% of mined coal ends up as fine (typically less than about 3 mm) or ultrafine (typically less than about 0.1 mm) coal dust. This pulverized coal is usually not suitable for final processing, even if its size is not problematic, but retains a large amount of water (10%-30%) making its transport and combustion "stubborn", difficult and inefficient. [0003] One of the solutions is to form briquettes (briquettes). Briquettes can be formed by compressing fine particles under extremely high pressure to physically form the secondary fuel material. However, the high investment and operating costs of briquetting plants (forming plants) have prevented their use in countries other than some high-consuming countries. In many places, ...

Claims

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Application Information

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IPC IPC(8): C10L5/10C10L5/12
CPCC10L5/12C10L5/105C10F7/06
Inventor 约翰·肯尼思·吉尔伯特约翰·塞缪尔·韦伯斯特
Owner SOLSYS
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