当前位置：
X-MOL 学术
›
ACS Sustain. Chem. Eng.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Two-Step Thermochemical Process for Adding Value to Used Railroad Wood Ties and Reducing Environmental Impacts
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acssuschemeng.7b02666 Pyoungchung Kim 1 , Adam Taylor 1 , Jeff Lloyd 2 , Jae-Woo Kim 2 , Nourredine Abdoulmoumine 3 , Nicole Labbé 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acssuschemeng.7b02666 Pyoungchung Kim 1 , Adam Taylor 1 , Jeff Lloyd 2 , Jae-Woo Kim 2 , Nourredine Abdoulmoumine 3 , Nicole Labbé 1
Affiliation
|
A two-step thermochemical process combining a thermal desorption at 250–300 °C and a pyrolysis at 500 °C of used creosote-treated wooden railroad ties was carried out to recover preservative and produce a high quality bio-oil and biochar. Under optimal temperature between 280 and 300 °C, high preservative removal efficiency (70–74%) was achieved with a high proportion of polycyclic aromatic hydrocarbons (PAHs, 80–82%) and a large portion of the original wood mass (67–70%) was retained. This thermally treated biomass had higher heating value (HHV; 19.9–20 MJ/kg) than the starting material. The physical properties of the preservative, such as viscosity and density, and its toxic threshold against a common decay basidiomycete fungus were similar to those of commercially available P2-creosote. Pyrolysis of the thermally treated ties produced bio-oils with lower water content and total acid numbers, and a higher amount of lignin-derived compounds than that of untreated ties. Biochars derived from the thermally treated ties contained higher carbon content and lower amount of PAHs than biochars from untreated ties.
中文翻译：
两步热化学过程，可为二手铁路木结带增值并减少环境影响
进行了两步热化学过程，将使用过的经杂酚油处理过的木制铁路枕木在250–300°C的温度下解吸和在500°C的高温下热解相结合，以回收防腐剂并生产出高质量的生物油和生物炭。在280至300°C的最佳温度下，使用高比例的多环芳烃（PAHs，80-82％）和大部分原始木材（67-67％）可获得很高的防腐剂去除效率（70-74％）。 70％）被保留。经过热处理的生物质的热值（HHV； 19.9-20 MJ / kg）比起始材料高。防腐剂的物理特性（例如粘度和密度）及其对常见腐烂的担子菌真菌的毒性阈值与市售P2-杂酚油相似。与未处理的领带相比，热处理的领带的热解产生的生物油具有较低的水含量和总酸值，并且木质素衍生的化合物的量更高。与未经处理的纽扣相比，经过热处理的纽扣所产生的生物炭具有较高的碳含量和较低的PAHs含量。
更新日期：2017-09-20
中文翻译：
两步热化学过程，可为二手铁路木结带增值并减少环境影响
进行了两步热化学过程，将使用过的经杂酚油处理过的木制铁路枕木在250–300°C的温度下解吸和在500°C的高温下热解相结合，以回收防腐剂并生产出高质量的生物油和生物炭。在280至300°C的最佳温度下，使用高比例的多环芳烃（PAHs，80-82％）和大部分原始木材（67-67％）可获得很高的防腐剂去除效率（70-74％）。 70％）被保留。经过热处理的生物质的热值（HHV； 19.9-20 MJ / kg）比起始材料高。防腐剂的物理特性（例如粘度和密度）及其对常见腐烂的担子菌真菌的毒性阈值与市售P2-杂酚油相似。与未处理的领带相比，热处理的领带的热解产生的生物油具有较低的水含量和总酸值，并且木质素衍生的化合物的量更高。与未经处理的纽扣相比，经过热处理的纽扣所产生的生物炭具有较高的碳含量和较低的PAHs含量。
京公网安备 11010802027423号