Industrial automation production equipment and production method used for lignite fine-drying and quality-improving moulding

Abstract

The invention relates to industrial automation production equipment and a production method which are used for lignite-drying and quality-improving moulding. The industrial automation production equipment mainly comprises a belt deironing conveyor, a belt conveyor, a coarse grinding machine, a classifying screen, a hoisting machine, main equipment 1-3-stage fine drying machine, a wet-type separating and aggregating device and a dust-removing purifying chamber, wherein a fine lignite dry powder storage silo and a moulding machine are successively arranged and connected in a technological process; and the lignite is converted into briquette, wherein the original all water of lignite is reduced to less than 10wt% from less than 65wt% by virtue of the 1-3-stage fine drying machine, hydrophilicity which is smooth outside and coarse inside and is compact outside and loose inside is changed into hydrophobicity, and surface property is converted into the property similar to excellent bituminite. The equipment provided by the invention has unique and novel structure, high drying efficiency and low cost; a product is difficult to absorb water, spontaneous combustion and heat value are greatly improved, and the problems of weathering, spontaneous combustion, transportation, storage, great investment and high cost are comprehensively solved. The equipment and method provided by the invention can be widely applied to lignite dehydration moulding in power plants at home and aboard and other boilers, and the equipment provided by the invention is dehydration drying and quality improving technical equipment of a new generation.

Description

technical field [0001] The invention relates to the field of energy, in particular to industrial automatic production equipment and a production method for finely drying and upgrading lignite. Background technique [0002] Lignite is the low-quality mineral coal with the lowest degree of coalification, most of which were formed in the third century, with a low degree of coalification and a high total water content, as high as about 60%. At present, the lignite reserves in the world are very rich, and the output is very large. Europe is one of the regions with the largest lignite reserves and mining volume, and the earliest development and processing technology. Most lignites were formed in the third century, with low coalification and high water content. 60%, Germany is the world leader in lignite mining, utilization and dehydration and upgrading technology. my country's lignite resources are mainly distributed in North China, accounting for 77.8% of the national lignite re...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiency that above-mentioned prior art exists, carry out long-term development research and industrialized production practice of lignite through the inventor, develop and provide and make lignite moisture content drop from<65% by weight (full water) to<10% by weight ( whole water) refined lignite dry powder, which can be molded and granulated. The property is changed from hydrophilic to hydrophobic, and the calorific value is greatly improved (some varieties can be doubled), which comprehensively solves the easy weathering and spontaneous combustion of lignite A kind of industrial automation production equipment and production method for fine drying and upgrading of lignite (called fine upgrading technology) due to the problems of difficult transportation, storage and lignite pretreatment, which require large investment and high cost.

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