| 학회 | 한국화학공학회 |
| 학술대회 | 2007년 가을 (10/26 ~ 10/27, 한국과학기술원) |
| 권호 | 13권 2호, p.1484 |
| 발표분야 | 공정시스템 |
| 제목 | TDLS센스 기반 가열로 산소농도제어에 관한 연구 |
| 초록 | There has been some studies to improve the combustion control of a furnace to be in state of low NOx and scale. In general, although a reheating furnace has oxygen monitoring system, the accuracy and robustness of a previous oxygen sensor (direct-reading Zr sensor system) is unreliable. In this project, we studied the more accurate and reliable sensing method for oxygen, evaluate the stability of TDLS ( Tuneable Diode Laser Spectroscopy) and make a feedback control system to get a stable response. The developed oxygen monitoring system is installed at no. 1 reheating furnace on hot roll at POSCO and the Zr sensor system shows too sensitive because it measures oxygen concentration on a spot unlike TDLS sensor which is successfully applied at 13m-width reheating furnace to measures the line average along the open path line. We can got stable and acceptable results as the deviation in 0.15vol% O2 range in case of general control region. In future we will study the level-up automatic oxygen control to more stable & lower air pollution, to reduce the scale loss and to obtain good surface quality in reheating furnace by measuring the fuel gas compositions in advance. |
| 저자 | 김영일1, 김기홍1, 이인범2 |
| 소속 | 1포항산업과학(연), 2포항공과대 |
| 키워드 | TDLS; O2; CO; combustion control |
| 원문파일 | 초록 보기 |
