Faculty of Biosciences Agro-Food and Environmental Technologies, University of Teramo, Campus universitario di Coste Sant'Agostino, Via R. Balzarini 1, 64100 Teramo, Italy.
Department of Industrial and Information Engineering and Economics, University of L'Aquila, Via Monteluco di Roio, 67100 L'Aquila, Italy.
Waste Manag. 2018 Jan;71:792-800. doi: 10.1016/j.wasman.2017.07.038. Epub 2017 Jul 27.
Heavy organic compounds produced during almond shells gasification in a steam and/or air atmosphere, usually called tar, are drastically reduced in the product gas by using simultaneously in one vessel a ceramic filter placed in the freeboard and a mixture of olivine and dolomite particles in the fluidized bed of the gasifier. The content of tar in the product gas during a reference gasification test with air, in presence of fresh olivine particles only, was 8600mg/Nm of dry gas. By gasifying biomass with steam at the same temperature level of 820°C in a bed of olivine and dolomite (20% by weight), and in the presence of a catalytic ceramic filter inserted in the freeboard of the fluidized bed gasifier, the level of tar was brought down to 57mg/Nm of dry producct gas, with a decrease of more than two orders of magnitude.
在蒸汽和/或空气气氛中进行杏仁壳气化时会产生大量的重有机化合物，通常称为焦油，通过在一个容器中同时使用放置在自由空间中的陶瓷过滤器和气化炉流化床中的橄榄石和白云石颗粒混合物，可大大减少产品气体中的焦油含量。在仅使用新鲜橄榄石颗粒的空气存在下进行参考气化测试时，产品气体中的焦油含量为 8600mg/Nm 干气。通过在 820°C 的温度水平下用蒸汽气化生物质，在橄榄石和白云石（20%重量）的床层中，并在插入流化床气化炉自由空间的催化陶瓷过滤器的存在下，焦油含量降低到 57mg/Nm 的干燥产品气体，降低了两个数量级以上。
