• Title/Summary/Keyword: 목재

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The Formation Characteristics of Tar, Ash and Clinker due to Combustion of Wood Pellet and Performance Analysis of Wood Pellet Boiler in terms of the Moisture Contents Change of the Wood Pellet (목재펠릿 연소 시 발생하는 타르, 재, 클링커 생성 특성 분석 및 함수율 변화에 따른 목재펠릿보일러의 성능 연구)

  • Euh, Seung Hee;Oh, Kwang Cheol;Oh, Jae Heun;Kim, Dae Hyun
    • Journal of Energy Engineering
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    • v.23 no.3
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    • pp.211-220
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    • 2014

  • This study reports the formation characteristics of tar, ash and clinker due to a wood pellet grade and the performance analysis of wood pellet boiler in terms of the moisture contents change of the wood pellet. Tar was accumulated on the heating surface according to combustion of wood pellet, the ash was yielded on the floor of combustion chamber in a wood pellet boiler and the clinker was solidified at the burner due to combustion of the 3rd grade wood pellet. Especially, the moisture contents is important factor to define the grade. Wood of logging residues has a non-uniform moisture contents after the field process, yields of tar, ash and clinker are increased in case of combustion due to the high ash contents. For these reasons, emission of harmful compounds in the exhaust gas, decrease of boiler efficiency and the system operating errors are observed. In the performance analysis of wood pellet boiler in terms of the moisture contents change of the 1st grade wood pellet, the boiler efficiency was reduced by 27.08% with 6.6% moisture contents increase. The optimum moisture contents of wood pellet is needed to improve the boiler performance and efficiency.

  • https://doi.org/10.5855/ENERGY.2014.23.3.211 인용 PDF KSCI

A Study on the Introduction and Settlement of the Labeling System for Wood-based Products and Expanding in Korea (목재제품 규격·품질 표시제도 국내 도입과 정착을 위한 제언)

  • Kim, Yunhui;Yeo, Hwanmyeong;Pang, Sungjun;Yang, Sangyun;Kang, Sungmo;Hwang, Kweonhwan
    • Journal of the Korean Wood Science and Technology
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    • v.41 no.3
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    • pp.258-268
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    • 2013

  • Wood-based products market is new growth engine industry of "Green growth policy". Korean government established a law, sustainable use of wood, for expanding wood and wood-based products market in 2012. This study was conducted to seek sustainable measures for conservation and management of valuable natural resources, offer expanding quality assurance services for wood-based products, and explore measures for expanding wood-based products labeling system. Through discussed domestic and overseas trends and literatures that concern wood-based products labeling system and investigated case studies that were presently operational. For expanding quality assurance services of wood-based products, Korea Forest Service operates a wood-based products labeling system in integrated management through variety awareness and specialist assessment for each product. This process will make enhanced wood-based products labeling system expanded gradually. To evolve into $3^{rd}$ party quality assurance services on maturity age of labeling system, public communication will help improve awareness of producer and consumer. appropriate incentive program will attract voluntary participation from woodbased product industry. Producers consider environmental ethics in their business and consumer should exercise their right to know.

  • https://doi.org/10.5658/WOOD.2013.41.3.258 인용 PDF KSCI

Characteristics of Fluoride-based Anti-stain Chemicals Made from industrial By-product (I) - Anti-mold Effectiveness, Iron Corrosivity and Hygroscopicity - (산업 부산물을 이용하여 제조한 플루오르화합물계 목재 방미제의 특성 (I) - 목재 방미효력 및 철부식성과 흡습성 -)

  • Lee, Jong-Shin
    • Journal of the Korean Wood Science and Technology
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    • v.32 no.2
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    • pp.73-81
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    • 2004

  • To develope of the inexpensive anti-stain chemicals, it was conducted to investigate the inhibitory effectiveness of mycelial growth and anti-mold effectiveness against test fungi causing surface mold of wood, iron corrosivity and hygroscopicity of six fluoride-based chemicals made from industrial by- product.Among the six chemicals. RNF-3 and RNF-4 were the most effective with respect to a mycelial growth control and anti-mold effectiveness. For the wood treatment with these chemicals, the optimum concentration was about 2% and there was no difference in the effectiveness of chemicals between wood species. The wood treated with synthesized chemicals showed a relatively high iron corrosion rate for corrosive F component whereas, in the treatment with RNF-3 and RNF-4, there was no difference from the untreated wood when the concentration was less than 2%. The hygroscopic property of wood was not effected by treatment of these chemicals. To prove the feasibility for practical using of RNF-3 and RNF-4 chemicals, it is necessary to test of anti-mold effectiveness in the sawmill by field test.

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