The Study of NOx Removal Efficiency by NH3 over V2O5/TiO2

• 영문명: The Study of NOx Removal Efficiency by NH3 over V2O5/TiO2
• 발행기관: 한국환경에너지공학회
• 저자명: Keon Joo Lee
• 간행물 정보: 『한국환경에너지공학회 학술대회지』2015년 춘계학술발표회, 284~286쪽, 전체 3쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2015.05.28

영문 초록

The selective catalytic reduction (SCR) reaction of promoter catalysts was investigated in this study. TiO2 of pure anatase type was used as support. Activation measurement of prepare catalysts practiced on a fixed reactor packing by the glass bead after fill up catalysts in 1/4 inch stainless tube. The reaction temperature was measured by K-type thermocouple and catalyst was heated by electric furnace. The standard compositions of the simulated flue gas mixture in this study were as follows : NO 1780ppm, NH3 1780ppm, O2 1%, and N2 as balance gas. In this study, gas analyzer was used to measure the outgassing gas. Catalyst bed was handled for 1hr at 450℃, and the reactivity of the various catalyst was determined in a wide temperature range. Conversion of NH3/NO ratio was practiced at 1, 1.5, 2 respectively and conversion of O2 concentration was practiced at respectively and the space velocity were as follows : 10,000, 15,000, 17,000 hr-1 respectively. It was found that the maximum conversion temperature range was in a 50℃, and it was also very sensitive at space velocity, O2 concentration, and NH3/NO ratio. It was found that the maximum conversion temperature of (W, Mo, Sn)-V2O5/TiO2 catalysts was broaden. Specially WO3-V2O5/TiO2 catalyst appeared nearly 100% conversion at not only above 300℃ but also below temperature of 25 0℃. At over 300℃, NH3 oxidation was decreased as decreasing of surface excess oxygen. Also WO3-V2O5/TiO2 catalyst does hardly appear to effect on space velocity, O2 concentration and NH3/NO ratio.

목차

1. INTRODUCTION

키워드

Oxidation Activation Space velocity surface activity conversion