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Raw coal treatment method and equipment

A processing method and processing equipment technology, which is applied in the direction of combustion method, combustion equipment, lighting and heating equipment, etc., can solve the problems of low dehydration rate of lignite and strong reabsorption of water, and achieve the goal of reducing energy consumption and improving comprehensive utilization rate Effect

Inactive Publication Date: 2013-08-14
王龙飞 +1
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Problems solved by technology

[0004] Aiming at the problems of low lignite dehydration rate and strong moisture reabsorption ability in the current lignite drying and upgrading technology, the invention provides a raw coal treatment method and raw coal treatment equipment with high raw coal dehydration rate

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Embodiment Construction

[0042] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0043] Aiming at the problems of low dehydration rate and strong water absorption capacity of lignite in the currently used lignite drying and upgrading technology, the present invention provides a raw coal processing method. The raw coal is first modified by microwave and then dried. The device achieves the effect of drying and dehydration. The dehydration rate is high, and long-term storage will not return moisture and absorb water. For lignite treatment, the calorific value of the raw coal after drying can be increased by at least 1000kcal / kg, and the calorific value has been greatly improved, making low calorific value lignite Become a high calorific value power fuel.

[0044] The method provided by the present invention i...

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Abstract

The invention provides a raw coal treatment method and equipment. The raw coal treatment method comprises the following steps of: 1, crushing raw coal; 2, conveying crushed coal particles to a microwave device, and carrying out microwave treatment to ensure that combined water of coal particles is converted into free water to destroy internal capillary structures of the raw coal and reach a preset temperature; and 3, conveying the coal particles subjected to microwave treatment to a drying device, and carrying out drying and dehydrating treatment to further remove the moisture of the coal particles. Due to the scheme, the coal particles of the raw coal are subjected to microwave treatment and modification first, the activity of water molecules is improved under the microwave action, so that original more stable internal water in the raw coal is separated out to form external water, and then the external water is dried by using manners, such as hot air, and therefore, the speed of volatilizing and evaporating moisture outwards is accelerated and the dehydration rate is further increased.

Description

Technical field [0001] The invention relates to the technical field of raw coal drying, in particular to a raw coal processing method and raw coal processing equipment. Background technique [0002] my country is a country dominated by coal as its primary energy resource and has become the world's largest coal producer. According to data, the mineable reserves of coal resources in my country rank third in the world, accounting for about 11.5% of the world's total reserves. Among them, lignite processing accounts for about 16% of the world's total lignite reserves. At present, the mining and utilization of coal resources in my country are mainly bituminous coal and anthracite, and the level of mining and utilization of lignite is very low. As my country's demand for energy continues to increase and the excessive exploitation of bituminous coal and anthracite resources, the development and utilization of lignite will become more and more important. Compared with bituminous coal ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00C10L9/08F26B3/00C10L9/00F26B21/00
Inventor 王龙飞姚小波
Owner 王龙飞
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