유해가스 저감형 친환경 착화탄에 관한 연구

다국어 초록 (Multilingual Abstract)

In this study, agglomerated wooden fuel manufactured from the torrefied wood was performed physical properties, fuel properties and combustion characteristics. As the results of testing physical properties, torrefied specimens of all species showed that they had superior dimensional stability. Two weeks after manufacturing torrefied specimens, it showed that they reached a range of moisture content in air dried condition based on the Korean standard. In particular, torrefied group showed lower moisture content than the untreated group at the same air-dried process conditions. Since hydroxyl groups which were contained in the timber during processing of the torrefaction treatment of feedstock was significantly lost, moisture absorbing capacity was decreased. Moreover, density of torrefied groups in the course of the same drying process was found to be higher than the untreated group. This was because it expected to have a closely related moisture absorption function of torrefied feedstock. As the result of testing fuel properties, it indicated that all torrefied specimens had higher heating value than ignition coals because of contains barium nitrate which was heavy metal. As the results of proximate analysis, average of ash content’s weight was lower than 90% compared with the conventional agglomerated wood charcoal, Moreover because total heat release became larger due to high contents of volatile matter, flaming combustion was promoted. However, carbon content which was major factor of burning process was lower than the conventional agglomerated wood charcoal.
As the result of combustion properties, carbon monoxide's emission quantities of torrefied specimens indicated about 90% lower than the conventional ignition coals. Because the torrefied specimens promoted normal combustion which was different from conventional agglomerated wood charcoal, the emission of carbon monoxide appeared markedly lower than the conventional one. Also, according to this experiment, it confirmed that pine had especially good performance among three species. As a result, agglomerated wood fuel which was made of torrefied wood particles showed outstanding fuel efficiency and reduction effects of harmful gas.

목차 (Table of Contents)

• Ⅰ . 서론 1
• Ⅱ . 연구사 3
• Ⅲ . 재료 및 방법
• 3.1 공시재료 4
• 3.1.1 공시수종 4
• 3.1.2 반탄화처리 4
• 3.1.3 접착제 5
• 3.2. 시험편 제조 6
• 3.2.1 원료교반 공정 6
• 3.2.2 사출성형 및 착화제 도포공정 6
• 3.3 시험편의 물리적 성질 8
• 3.4 시험편의 연료적 성질 9
• 3.5 시험편의 연소적 성질 9
• Ⅳ . 결과 및 고찰
• 4.1 각 3수종의 탄화도 구명 12
• 4.1.1 탄화도 산출결과 12
• 4.1.2 고위발열량 측정결과 13
• 4.2 시험편의 물리적 성질 15
• 4.2.1 함수율 측정결과 15
• 4.2.2 겉보기밀도 측정결과 17
• 4.2.3 압축비 측정결과 19
• 4.2.4 밀도 측정결과 21
• 4.3 시험편의 연료적 성질 24
• 4.3.1 발열량 측정결과 24
• 4.3.2 공업분석 결과 25
• 4.3.3 열중량분석 결과 27
• 4.4 시험편의 연소적 성질 24
• 4.4.1 콘칼로리미터실험 결과 31
• 4.4.2 실대재 연소실험 결과 35
• 4.4.2.1 일산화탄소 발생량 측정결과 35
• 4.4.2.2 중량감소율 측정결과 39
• 4.4.2.3 열효율 측정결과 42
• Ⅴ. 결론 44
• 참고문헌 46
• ABSTRACT 48