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Title:
SYSTEM FOR DRYING COAL USING HOT SUPERHEATED STEAM WHICH IS HEATED MULTIPLE TIMES
Document Type and Number:
WIPO Patent Application WO/2013/089337
Kind Code:
A1
Abstract:
A system for drying coal. A superheated steam reheating unit includes heating pipes connected in multiple stages to reheat superheated steam supplied from a superheated steam supply pipe and a connector pipe communicating between the heating pipes. Each heating pipe has therein a dry heater, which converts applied electrical energy into heat due to electrical resistance. A hot air supplier creates hot air by burning fuel. A superheated steam dry unit removes moisture from the surface of coal using the superheated steam while transporting the coal on a steam conveyor belt. A hot air dry unit removes moisture from the inside of the coal using the hot air while transporting the coal on a dry conveyor belt. A natural dry unit lowers the temperature of the coal by drying the coal at room temperature while transporting the coal on a flat conveyor belt.

Inventors:
KIM SUNG KON (KR)
Application Number:
PCT/KR2012/006892
Publication Date:
June 20, 2013
Filing Date:
August 29, 2012
Export Citation:
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Assignee:
HANKOOK TECHNOLOGY INC (KR)
KOREA WESTERN POWER CO LTD (KR)
KIM SUNG KON (KR)
International Classes:
F26B21/02; F26B3/04; F26B17/08; F26B21/06
Foreign References:
KR20060055937A2006-05-24
JPH0673379A1994-03-15
JPS62158784A1987-07-14
JP2009281671A2009-12-03
Attorney, Agent or Firm:
DARAE IP FIRM (131 Teheran-ro, Gangnam-gu, Seoul 135-080, KR)
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Claims: