Chommontha Natvaree, Phongphiphat Awassada, Wangyao Komsilp, Patumsawad Suthum, Towprayoon Sirintornthep
The Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, Bangkok, Thailand.
Center of Excellence on Energy Technology and Environment (CEE), PERDO, Ministry of Higher Education, Science, Research and Innovation, Bangkok, Thailand.
Waste Manag Res. 2022 May;40(5):575-585. doi: 10.1177/0734242X211003974. Epub 2021 Mar 29.
Coconut agro-industry in the western region of Thailand generates a large amount of residues. This study investigated the energy production potential of discarded coconut petioles, with a focus on co-gasification with refuse-derived fuel (RDF). Gasification tests involving petioles, RDFs and their mixtures (25%, 50%, 75% or 100% by weight) were conducted in a laboratory-scale fixed bed reactor. Fuel samples of 5 g were gasified at 700°C-900°C for 60 minutes, using simulated air (79% N to 21% O, by volume) as a gasifying agent. Gasification of petioles generated producer gas with lower heating values, estimated at 0.43-0.75 MJ Nm, while RDF produced 0.92-1.39 MJ Nm. Adding greater quantities of RDF to the fuel mixture resulted in an increase in the heating value of the producer gas and cold gas efficiency. The operating temperatures and gasifying-agent flow rates affected the efficiency of process differently, depending on the fuel composition. However, the maximum cold gas efficiency from both fuels was detected in tests conducted at 800°C. In co-gasification and pure refuse-derived-fuel tests, higher temperatures and gasifying-agent flow rates led to outputs with higher energy yields. Our findings suggested that co-gasification of petiole is a viable alternative waste-treatment technology for this region.
泰国西部地区的椰子农工业产生了大量残渣。本研究调查了废弃椰叶柄的能源生产潜力，重点是与垃圾衍生燃料（RDF）共气化。在实验室规模的固定床反应器中进行了涉及椰叶柄、RDF及其混合物（按重量计25%、50%、75%或100%）的气化试验。使用模拟空气（按体积计79%N至21%O）作为气化剂，将5克燃料样品在700°C - 900°C下气化60分钟。椰叶柄气化产生的低热值煤气估计为0.43 - 0.75 MJ Nm，而RDF产生的低热值煤气为0.92 - 1.39 MJ Nm。向燃料混合物中添加更多数量的RDF会导致煤气的热值和冷煤气效率增加。操作温度和气化剂流速对过程效率的影响因燃料组成而异。然而，在800°C进行的试验中检测到两种燃料的最大冷煤气效率。在共气化和纯垃圾衍生燃料试验中，较高的温度和气化剂流速导致了更高的能源产量输出。我们的研究结果表明，椰叶柄共气化是该地区一种可行的替代废物处理技术。
