Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CLEANING APPARATUS FOR ELECTRIC FURNACE BY-PRODUCT GAS RECOVERY DUCT
Document Type and Number:
WIPO Patent Application WO/2007/052448
Kind Code:
A1
Abstract:
A cleaning apparatus for electric furnace by-product gas recovery duct that is capable of removing any dust deposited in a gas duct from precooling column to Venturi scrubber at the time of dust removal from by-product gas generated in reducing refining of alloy iron, etc. by means of a dust removing apparatus including the Venturi scrubber without the need to halt the operation of the electric furnace. Accordingly, at a gas-outlet-side end portion of traverse duct extending from precooling washing column to Venturi scrubber, there is provided a traverse duct deposit dust cleaning lance which is inserted through a gas seal portion in the traverse duct in a fashion permitting forward and back traveling and which at its proximal end is fitted with a pressurized water supply portion and at its distal end is fitted with a pressurized water jetting nozzle. Just above region of the traverse duct where the Venturi scrubber is fitted, there is provided a vertical duct deposit dust cleaning lance which is inserted through a gas seal portion in a vertical duct extending from the traverse duct to the Venturi scrubber in a fashion permitting forward and back traveling and which at its proximal end is fitted with a pressurized water supply portion and at its distal end is fitted with a pressurized water jetting nozzle.

Inventors:
YANAGIMORI TETSUO (JP)
NISHI TAKAYUKI (JP)
NAGASAKI MASATO (JP)
SEKIZAWA YASUO
Application Number:
PCT/JP2006/320270
Publication Date:
May 10, 2007
Filing Date:
October 11, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON DENKO (JP)
SEKIZAWA CHIKAKO (JP)
YANAGIMORI TETSUO (JP)
NISHI TAKAYUKI (JP)
NAGASAKI MASATO (JP)
International Classes:
F27D17/00; F27B3/24
Foreign References:
JPH043886A1992-01-08
JP2001286841A2001-10-16
JPS5933636B21984-08-16
Attorney, Agent or Firm:
SHIRAKI, Daitaro (Kyodo Bld. 2, Kandaiwamotoch, Chiyoda-ku Tokyo, JP)
Download PDF: