Drying system for lignite
A drying system and lignite technology, applied in the direction of dryer combination, drying chamber/container, drying, etc., can solve the problems of low efficiency, small drying coal output, volatile components and other problems
Inactive Publication Date: 2012-12-26
SHANDONG ELECTRIC POWER SCHOOL
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Problems solved by technology
There are large reserves of lignite, especially in Inner Mongolia. Due to the high moisture content of lignite, it is not conducive to long-distance transportation. It usually needs to be dried before transportation. At present, most lignite drying equipment is drum type. This equipment has the disadvantages of small drying coal output, low efficiency, and volatile Volatile, easy to cause spontaneous combustion of coal
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[0009] The present invention will be further described now in conjunction with accompanying drawing, figure 1 It is an embodiment of the present invention, including primary drying equipment, secondary drying equipment, hot flue gas conveying device 1, drying cylinder 2 and lifting device 3, etc., said primary drying equipment includes driving device, conveying chain plate 4. Coal scraping device, platen 5, wet coal hopper 6, conveyor chain plate 4 are connected with the driving device, and the conveyor chain plate 4 is driven by the driving device to form a continuous cycle. The conveying chain plate 4 is arranged in a flue of the hot flue gas conveying device 1 and is located below the coal drop hopper 11. The air inlet of the flue corresponds to the front part of the conveying chain plate 4, and there are two gas outlets of the flue. They are all arranged at the rear of the conveying chain plate 4, and one air outlet communicates with the chimney through a pipe, and a dust ...
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The invention relates to a drying system for lignite. The drying system comprises a hot flue gas conveying system, a drying roller, an elevating device, first-stage drying equipment and second-stage drying equipment, wherein the first-stage drying equipment comprises a driving device, a conveying chain plate, a lignite scratching device, a platen and a wet lignite hopper, wherein the conveying chain plate device is arranged in the flue of the hot flue gas conveying system and positioned under a lignite falling hopper; the rear side of the conveying chain plate is connected with the lignite hopper; the secondary drying equipment comprises the vertical drying roller; a carbon monoxide alarming device and a spraying device are arranged on the drying roller; a temperature sensor is arranged on the drying roller and is connected with a switch valve through a circuit; and the lignite hopper and the wet lignite hopper are respectively connected with the elevating device. The drying system disclosed by the invention has the characteristics of great drying lignite output amount, high efficiency and capabilities of preventing and eliminating the spontaneous combustion of the lignite.
Description
technical field [0001] The invention relates to a lignite drying system. Background technique [0002] Lignite is mostly brown in appearance, dull in luster, and contains high internal moisture and different amounts of humus. Because it is rich in volatile matter, the volatile matter is greater than 40%, so it is easy to burn and emit smoke. There are large reserves of lignite, especially in Inner Mongolia. Due to the high moisture content of lignite, it is not conducive to long-distance transportation. It usually needs to be dried before transportation. At present, most lignite drying equipment is drum type. This equipment has the disadvantages of small drying coal output, low efficiency, and volatile It is volatile and can easily cause spontaneous combustion of coal. Contents of the invention [0003] The object of the present invention is to provide a drying system for lignite with large amount of drying coal, high efficiency and less likely to cause coal spontaneous ...
Claims
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IPC IPC(8): F26B20/00F26B25/16
Inventor 张磊
Owner SHANDONG ELECTRIC POWER SCHOOL