Korea Power Engineering Company, Inc.

Scentec Inc.

Sung Chang Hong

Sung Ho Hong

Jun Yub Lee

Sung Pill Cho

Sang Hyun Choi

Seok Joo Hong

Yong Sog Kwon

Sun Tae Kim

Chang Hoon Shin

Suk Jae Kang

Pill Won Seo

Shi Cheol Shin

Do Gyong Lee

The present invention relates to a bad odor removal system that is applied to a long sewage pipe, and provides a bad odor removal system for a swage pipe, and the system basically comprises: deodorizers which are installed at certain intervals on the upper part of the sewage pipe; and a bad odor ventilating device which is installed on the inside of the sewage pipe in connection with said deodorizers, and includes a cooling device, wherein an air flow blocking membrane is installed on the inside of the sewage pipe and bad odor dispersion-preventive plates that actively operate are installed on an outlet and a manhole, thereby effectively blocking all kinds of bad odors that may be generated from the entire sewage pipe.

Bad odor removal system for sewage pipe

Disclosed is a vanadium/titania-based catalyst including natural manganese ore for removing nitrogen oxides and dioxin in a wide operating temperature range and a method of using the same. Specifically, this invention pertains to a vanadium/titania (V/TiO)-based catalyst, including natural manganese ore, and a method for removing nitrogen oxides and dioxin over a wide operating temperature range, in which the WTiOcatalyst for selective catalytic reduction of nitrogen oxides and removal of dioxin contained in flue gas includes 5-30 wt % of natural manganese ore.

Vanadium/titania catalyst comprising natural manganese ore for removing nitrogen oxides and dioxin in wide operating temperature range and method of using the same

Disclosed are a method for preparing a catalyst, which has excellent nitrogen oxide-removal performance and resistance over a wide temperature range, and the use of the catalyst. According to the disclosed method, the oxidation number and surface defects of the catalyst are changed by applying artificial high energy through mechanical ball milling during the preparation process of the catalyst, instead of applying the addition of a precious metal, the deformation of a support and the use of a co-catalyst in order to increase NOx removal activity, such that activation energy for inducing redox reactions can be decreased.

Preparation method of vanadium/titania-based catalyst showing excellent nitrogen oxide-removal performance at wide temperature window through introduction of ball milling, and use thereof

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Seoul, South Korea

Sung Chang Hong