FLUE GAS PURIFYING DEVICE
An object of the present invention is to provide a flue gas purifying device that can suppress leakage of ammonia and can efficiently nitrogen- oxides in flue gas. The object is achieved by a flue gas purifying device including: an exhaust pipe; a urea-water injecting unit that injects urea water in...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | English Korean |
Published |
19.07.2011
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Subjects | |
Online Access | Get full text |
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Summary: | An object of the present invention is to provide a flue gas purifying device that can suppress leakage of ammonia and can efficiently nitrogen- oxides in flue gas. The object is achieved by a flue gas purifying device including: an exhaust pipe; a urea-water injecting unit that injects urea water into the exhaust pipe; a catalytic unit that includes a urea SCR catalyst that promotes a reaction between ammonia and nitrogen oxides and a support mechanism that supports the urea SCR catalyst in the exhaust pipe, and is arranged on a downstream side to a position where urea water is injected; a concentration measuring unit arranged on a downstream side to the catalytic unit in a flow direction of flue gas to measure an ammonia concentration in flue gas having passed through the urea SCR catalyst; and a control unit that controls injection of urea water by the urea-water injecting unit based on an ammonia concentration measured by the concentration measuring unit. |
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Bibliography: | Application Number: KR20117013004 |