{"title":"竹原料的二氧化碳热碳化和高温蒸汽气化一体化：综合实验研究","authors":"Hong Nam Nguyen","doi":"10.1016/j.bamboo.2024.100060","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigated an integrated CO<sub>2</sub>-hydrothermal carbonization (CO<sub>2</sub>-HTC) and steam gasification of bamboo feedstock, an abundant biomass in Vietnam. Bamboo underwent CO<sub>2</sub>-HTC at 240 °C under 100% CO<sub>2</sub> atmosphere with a biomass-to-water ratio of 1:4 and a residence time of 60 min. The resulting hydrochar served as feedstock for steam gasification at 900 °C under an atmosphere of 40% H<sub>2</sub>O and 60% N<sub>2</sub>. A parallel experiment using raw bamboo provided a basis for comparison. Results indicate notable enhancements in fixed carbon content, bulk density, and higher heating value of bamboo subsequent to CO<sub>2</sub>-HTC. The CO<sub>2</sub>-HTC bamboo displayed a higher maximum decomposition rate. Its char also showed quicker conversion, enhancing gasification efficiency. A syngas richer in both H<sub>2</sub> and CO by 2% was also produced with CO<sub>2</sub>-HTC bamboo compared to the raw bamboo. The observed improvements in gasification performance suggest promising avenues for the more effective and sustainable utilization of bamboo in energy production.</p></div>","PeriodicalId":100040,"journal":{"name":"Advances in Bamboo Science","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773139124000053/pdfft?md5=859e0fb2872ef5f6d101c812cc55cefb&pid=1-s2.0-S2773139124000053-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Integrated CO2-hydrothermal carbonization and high temperature steam gasification of bamboo feedstock: A comprehensive experimental study\",\"authors\":\"Hong Nam Nguyen\",\"doi\":\"10.1016/j.bamboo.2024.100060\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study investigated an integrated CO<sub>2</sub>-hydrothermal carbonization (CO<sub>2</sub>-HTC) and steam gasification of bamboo feedstock, an abundant biomass in Vietnam. Bamboo underwent CO<sub>2</sub>-HTC at 240 °C under 100% CO<sub>2</sub> atmosphere with a biomass-to-water ratio of 1:4 and a residence time of 60 min. The resulting hydrochar served as feedstock for steam gasification at 900 °C under an atmosphere of 40% H<sub>2</sub>O and 60% N<sub>2</sub>. A parallel experiment using raw bamboo provided a basis for comparison. Results indicate notable enhancements in fixed carbon content, bulk density, and higher heating value of bamboo subsequent to CO<sub>2</sub>-HTC. The CO<sub>2</sub>-HTC bamboo displayed a higher maximum decomposition rate. Its char also showed quicker conversion, enhancing gasification efficiency. A syngas richer in both H<sub>2</sub> and CO by 2% was also produced with CO<sub>2</sub>-HTC bamboo compared to the raw bamboo. The observed improvements in gasification performance suggest promising avenues for the more effective and sustainable utilization of bamboo in energy production.</p></div>\",\"PeriodicalId\":100040,\"journal\":{\"name\":\"Advances in Bamboo Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2773139124000053/pdfft?md5=859e0fb2872ef5f6d101c812cc55cefb&pid=1-s2.0-S2773139124000053-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Bamboo Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2773139124000053\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Bamboo Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2773139124000053","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
本研究调查了越南丰富的生物质--竹子原料的二氧化碳热碳化（CO2-HTC）和蒸汽气化综合工艺。竹子在 240 °C、100% CO2 气氛下进行 CO2-HTC，生物质与水的比例为 1:4，停留时间为 60 分钟。生成的水炭可作为原料，在 900 °C 的温度下，在 40% H2O 和 60% N2 的气氛中进行蒸汽气化。使用原竹进行的平行实验提供了比较的基础。结果表明，在 CO2-HTC 之后，竹子的固定碳含量、体积密度和热值都有显著提高。CO2-HTC 竹材的最大分解率更高。竹炭的转化速度也更快，从而提高了气化效率。与原竹材相比，CO2-HTC 竹材产生的合成气中 H2 和 CO 的含量均高出 2%。所观察到的气化性能改善表明，在能源生产中更有效、更可持续地利用竹子是一条大有可为的途径。
Integrated CO2-hydrothermal carbonization and high temperature steam gasification of bamboo feedstock: A comprehensive experimental study
This study investigated an integrated CO2-hydrothermal carbonization (CO2-HTC) and steam gasification of bamboo feedstock, an abundant biomass in Vietnam. Bamboo underwent CO2-HTC at 240 °C under 100% CO2 atmosphere with a biomass-to-water ratio of 1:4 and a residence time of 60 min. The resulting hydrochar served as feedstock for steam gasification at 900 °C under an atmosphere of 40% H2O and 60% N2. A parallel experiment using raw bamboo provided a basis for comparison. Results indicate notable enhancements in fixed carbon content, bulk density, and higher heating value of bamboo subsequent to CO2-HTC. The CO2-HTC bamboo displayed a higher maximum decomposition rate. Its char also showed quicker conversion, enhancing gasification efficiency. A syngas richer in both H2 and CO by 2% was also produced with CO2-HTC bamboo compared to the raw bamboo. The observed improvements in gasification performance suggest promising avenues for the more effective and sustainable utilization of bamboo in energy production.
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