Lignite drying system

A drying system and lignite technology, applied in the direction of drying solid materials, drying chamber/container, drying gas arrangement, etc., can solve the problems of immature technology and high investment cost, and achieve the effect of high efficiency and low investment cost

Inactive Publication Date: 2010-09-29
YANCHENG HAIKE MACHINERY MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the current drying technology for lignite is not only too high in investment cost, but also not mature enough

Method used

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  • Lignite drying system
  • Lignite drying system

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Embodiment Construction

[0013]In the accompanying drawings, a lignite drying system includes a pulverized coal furnace, a three-barrel dryer 27, a hoist 16, a cyclone dust collector 30, a bag filter 33 and a screw conveyor 35. The pulverized coal furnace contains a coal grinding and powder injection device 1 and a combustion chamber 4 . The combustion chamber 4 contains a coal inlet 3 and an air outlet 5 , and the coal outlet 2 of the coal grinding and powder injection device 1 is connected with the coal inlet 3 of the combustion chamber 4 . The three-cylinder dryer 27 includes a feed pipe 17 , an air inlet device, a composite cylinder body, a discharge device 28 and a driving device 26 . The composite cylinder is formed by concentrically fitting three outer cylinders 21 , a middle cylinder 22 and an inner cylinder 23 with different diameters from large to small. The outer cylinder 21 of the composite cylinder is provided with a tire belt 24 , and the tire belt 24 is placed on the support roller 25 ...

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Abstract

The invention discloses a lignite drying system. A three-cylinder dryer in the lignite drying system comprises an air inlet device, combined cylinders, a discharging device and a driving device. The air inlet device comprises an outer shell and an inner shell. The inner shell is penetrated in the outer shell. The outer shell is provided with an outer cylinder air blending valve and an outer cylinder thermoelectric couple. The outer cylinder air blending valve is connected with the corresponding electric executer. The inner shell is provided with a middle cylinder air blending valve and a middle thermoelectric couple thereon. The middle cylinder air blending valve is connected with the corresponding electric executer. The air outlet of a coal power furnace in the system is provided with an inner thermoelectric couple and an inner cylinder air blending valve. The air outlet of the discharging device is connected with the air inlet of the cyclone dust collector via ventilating duct. The air outlet of the cyclone dust collector is connected with the inlet of the bag-type dust collector. The discharge hole of the bag-type dust collector and the discharge hole of the cyclone dust collector are connected with the feeding hole of the screw conveyer, and the discharge hole of the screw conveyer is connected with the bunker of the coal grinding powder spraying device of the coal powder furnace.

Description

Technical field [0001] The invention relates to a drying system for materials with high water content, especially a lignite drying system. Background technique [0002] Lignite is one of the main coal resources in my country, accounting for about 16% of the world's lignite reserves. At present, the level of development and utilization of lignite in my country is very low. As my country's demand for energy continues to increase, the development and utilization of lignite will become more and more important. Compared with bituminous coal and anthracite, lignite has the advantages of lower price and high reactivity, but its calorific value is relatively low and its water content is high. Therefore, one of the keys to the development and utilization of lignite is the development of lignite drying and upgrading technology. At present, the steam drying process is widely used in foreign countries to dry lignite, and then directly sent to the pit mouth power plant for combustion a...

Claims

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Application Information

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IPC IPC(8): F26B11/04F26B3/02F26B21/00F26B25/16F26B25/02
Inventor 柏静柱
Owner YANCHENG HAIKE MACHINERY MFG
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