Title:
BLAST FURNACE INSTALLATION
Document Type and Number:
WIPO Patent Application WO/2014/045877
Kind Code:
A1
Abstract:
This blast furnace installation (100) is configured such that when pulverized coal (18), which has been prepared by pulverizing high-grade coal (12) supplied by a feeder (152) to a roller mill (153), is pneumatically conveyed into a supply tank (120) by means of a combustion gas (108), pulverized coal (8), which has been prepared by drying, dry-distilling, cooling, and pulverizing low-grade coal (2) with a drying device (122), a dry-distillation device (123), a cooling device (124), and a pulverization device (125), is supplied from a storage tank (126) by a feeder (127) and pneumatically conveyed into the supply tank (120) by means of a nitrogen gas (102), and then the pulverized coals (8, 18) in the supply tank are pneumatically conveyed from a supply line (119) into an injection lance (116) by means of a carrier gas (107), a control unit (160) controls the feeders so as to gradually increase the supply amount (C2) of pulverized coal (8) while maintaining the total amount of supply amount (C1) of pulverized coal (18) and supply amount (C2) of pulverized coal (18) to be supplied to the tuyere at a prescribed amount (Ct).
Inventors:
NAKAGAWA KEIICHI (JP)
OMOTO SETSUO (JP)
SAKAGUCHI MASAKAZU (JP)
HAMADA TSUTOMU (JP)
OKADA TAKESHI (JP)
OMOTO SETSUO (JP)
SAKAGUCHI MASAKAZU (JP)
HAMADA TSUTOMU (JP)
OKADA TAKESHI (JP)
Application Number:
PCT/JP2013/073879
Publication Date:
March 27, 2014
Filing Date:
September 05, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C21B7/00; B02C21/00; C21B5/00
Domestic Patent References:
| WO2013108768A1 | 2013-07-25 |
Foreign References:
| JP2011099011A | 2011-05-19 | |||
| JP2012162604A | 2012-08-30 |
Attorney, Agent or Firm:
MITSUISHI, Toshiro et al. (JP)
Toshiro Mitsuishi (JP)
Toshiro Mitsuishi (JP)
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