| 摘要 |
An integrated drying and dry-separating apparatus for upgrading raw coal includes a coal supply system, a hot air system, a drying system, a dedusting and exhausting system, and a dry-separating system. The coal supply system conveys raw coal to the hot air system and the drying system by a raw coal conveyer respectively. The hot air system is a heat source of the drying system. The drying system is used for drying and dewatering the raw coal. The dedusting and exhausting system is consisted of a deduster and an exhaust fan, and establishes a connection between the drying system and the dry-separating system. The dry-separating system includes a dry separator, a circulating fan, and a cyclone deduster, which is used for separating dried raw coal into fancy coal, middling coal and coal gangue. A method for dry-separating and drying raw coal using the apparatus is also provided. |
| 主权项 |
1. An integrated drying and dry separation apparatus for upgrading raw coal, comprising: a coal supply system, a hot air system, a drying system, a dedusting and exhausting system, and a drying separation system,
the coal supply system is separable into two portions, a coal supply for dry raw coal and a coal supply for hot air furnace; the coal supply system supplies raw coal to the hot air system and the drying system respectively by using a raw coal conveyor; the hot air system is a heat source portion of the drying system comprises a hot air furnace, a settling chamber and a first main fan, the hot air system supplies hot air with certain temperature pressurized by the first main fan to the drying system, wherein the hot air with certain temperature is formed by removing sparks from flue gas produced in the hot air furnace when passing through the settling chamber and then mixing the processed flue gas with cold air, an air outlet of a first main fan is connected to a lower portion of a dryer in the drying system; the drying system is configured for drying and dehydrating the raw coal, and for reducing the water content of the raw coal, wherein the dried coal products are conveyed to the dry separation system by a dried product conveyor; the dedusting and exhausting system is configured for recycling fine particles of coal dust, comprising a dust remover and an exhaust blower, connected between the drying system and the dry separation system, the exhaust blower includes a draught fan and an exhaust pipe; and the dry separation system comprises a dry separator, a circulating fan and a cyclone dust remover, and is configured to separate the dried raw coal into fancy coal, middling coal and coal gangue.
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