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PUKYONG Repository 산업대학원 환경공학과

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Alternative Title: Removal characteristics of air pollutants using wet type multi-stage porous plate system

Abstract: This study was to investigate the removal characteristics of air pollutants for wet type multi-stage porous system. Air pollutants for experiment was dust(fly ash) and gas(SOx, NOx). The experiment for dust removal was carried out to analyze the characteristics of pressure drop and collection efficiency. In result, pressure drop of system was 73 mmH₂O(hole diameter-12 mm), 65 mmH₂O(hole diameter-14 mm) at 3 stage and hole velocity 15 m/s. Collection efficiencies were 99.22%(Φ14 mm), 98.20%(Φ12 mm) at 3 stage and hole velocity 15 m/s. For collection efficiency with hole velocity, collection efficiencies were represented as 97.24%, 98.20%, 98.85% with hole velocity increment(12, 15, 18 m/s) at 14 mm diameter tube and 3 stage system. Gas phase pollutants for the experiment were SOx and NOx. When 0.2% NaOH was used as the absorption solution at 7.5 m/s and 3 stage, the removal efficiency of SOx was about 44.4%. When 0.38% NH₄OH was used at 7.5 m/s and 3 stage, the removal efficiency of NOx was about 40%.

URI: https://repository.pknu.ac.kr:8443/handle/2021.oak/4150
http://pknu.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001984320

Table Of Contents: Ⅰ. 서론 = 1
Ⅱ. 이론적 배경 = 4
1. 세정 집진장치 (Scrubber) = 4
1.1 의 및 원리 = 4
1.2 세정집진기 이론 = 5
1.3 세정집진기 종류 = 10
1.4 세정집진기의 장·단점 = 16
2. 습식 다단 다공성 플레이트 시스템 (Wettype multi- stage porousplatesystem) = 17
2.1 정의 및 원리 = 17
2.2 수치해석 이론 및 방법 = 18
2.2.1 유동장 지배방정식 = 18
2.2.2 입자 운동 지배방정식 = 20
2.3 수치 시뮬레이션 = 22
Ⅲ. 실험장치 및 방법 = 26
1. 실험장치 = 26
2. 실험방법 = 29
Ⅳ. 실험결과 및 고찰 = 31
1. 입자상 오염물질 제거 (fly ash) = 31
1.1 압력손실 = 31
1.1.1 홀 직경에 따른 압력손실 = 32
1.1.2 Stage 수 증가에 따른 압력손실 = 33
1.1.3 홀 통과유속에 따른 압력손실 = 34
1.2 집진효율 = 35
1.2.1 홀 직경에 따른 집진효율 = 35
1.2.2 Stage 수 증가에 따른 집진효율 = 36
1.2.3 홀 통과유속에 따른 집진효율 = 37
1.2.4 입구농도에 따른 집진효율 = 39
1.2.5 순환유량에 따른 집진효율 = 40
2. 가스상 오염물질 제거 (SOx, NOx) = 42
2.1 SOx 제거효율 = 43
2.1.1 흡수액에 따른 제거효율 = 43
2.1.2 홀 통과유속에 따른 제거효율 = 44
2.1.3 NaOH 흡수액 농도에 따른 제거효율 = 45
2.2 NOx 제거효율 = 46
2.2.1 흡수액에 따른 제거효율 = 46
2.2.2 홀 통과유속에 따른 제거효율 = 47
Ⅴ. 결론 = 49
참고문헌 = 51

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