SYSTEM FOR DENITRIFYING EXHAUST GAS CAPABLE OF PREVENTING BLOCKAGES IN A UREA WATER INFLOW PATH AND AN INJECTION NOZZLE, AND DEVICE FOR SUPPLYING UREA WATER CAPABLE OF PREVENTING THE COAGULATION OF UREA WATER

Title:

Document Type and Number:

WIPO Patent Application WO/2011/090258

Kind Code:

A2

Abstract:

The present invention relates to a system for denitrifying exhaust gas capable of preventing blockages in a urea water inflow path and an injection nozzle, and to device for supplying urea water capable of preventing the coagulation of urea water. The system for denitrifying exhaust gas includes a urea water injection unit supplying urea water and air to a reaction chamber, and the urea water injection unit includes an air supply unit for supplying external air to an injection unit through an air inflow path; a urea water supply unit for supplying urea water to the injection unit through a urea water inflow path; a water supply unit for supplying water to the injection unit through a water inflow path connected to one side of the urea water inflow path; a flow control valve for selectively supplying water or urea water to the injection unit through the urea water inflow path; and said injection unit connected to the air supply unit and to the urea water supply unit for selectively feeding air, urea water, and water into the reaction chamber. Blockages in the urea water inflow path and the injection nozzle due to the continuous feeding of urea water and air into the reaction chamber can be prevented by supplying water to the injection nozzle and to the urea water inflow path.

Inventors:

LEE SOO-TAE (KR)
CHOI WON-SUK (KR)
HONG SUNG-HO (KR)
KANG GYEONG-WOO (KR)
SHIN CHANG-HOON (KR)

Application Number:

PCT/KR2010/007475

Publication Date:

July 28, 2011

Filing Date:

October 28, 2010

Export Citation:

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Assignee:

PANASIA CO LTD (KR)
KOREA POWER ENG CO INC (KR)
LEE SOO-TAE (KR)
CHOI WON-SUK (KR)
HONG SUNG-HO (KR)
KANG GYEONG-WOO (KR)
SHIN CHANG-HOON (KR)

International Classes:

B01D53/78; B01D47/06; B01D53/56; F23G7/06

Foreign References:

JP2007000783A	2007-01-11
JP2007002765A	2007-01-11
KR20050039463A	2005-04-29
KR20090082669A	2009-07-31

Other References:

None
See also references of EP 2527028A4

Attorney, Agent or Firm:

KIM, HYUN-SOO (KR)
김현수 (KR)

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