Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD OF OPERATING BLAST FURNACE
Document Type and Number:
Japanese Patent JP2011106800
Kind Code:
A
Abstract:

To provide a combustion method capable of stably burning gas with a low calorific value without using a combustion assist gas of a high oxygen concentration, in a combustion burner.

In the combustion burner, an opening for blowing each of a fuel gas and a combustion assist gas or blowing a premixed gas of the fuel gas and the combustion assist gas to generate a gas turning flow in a combustion chamber is formed on the inner wall face of the tubular combustion chamber having an opened tip. When a gas of 1,000 kcal/Nm3 or lower of a calorific value is used as the fuel gas, hydrogen is added to the fuel gas before it is blown into the combustion chamber and/or the fuel gas which has been blown into the combustion chamber (however, including the case that the gas is added as a hydrogen-containing gas).


More Like This:
Inventors:
ASANUMA MINORU
NOUCHI YASUHEI
FUJIBAYASHI TERUO
Application Number:
JP2009000299101
Publication Date:
June 02, 2011
Filing Date:
December 29, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JFE STEEL CORP
International Classes:
F23K5/00; C21B5/00; C21B5/06; F27D17/00
Attorney, Agent or Firm:
苫米地 正敏