化学链燃烧载氧体颗粒制备技术研究 - 台湾永续能源研究基金会.PDFVIP

2011 海峽兩岸氣候變遷與能源永續發展論壇 化学链燃烧载氧体颗粒制备技术研究 郭庆杰 * 、张建社、刘永卓 青岛科技大学化工学院、清洁化工过程山东省重点实验室 ABSTRACT: Compared with oil and natural gas, coal 关键词：CCS 、化学链燃烧(CLC) 、载氧体、硫酸盐 resource in China is relatively abundant, coal consumption amount is much greater than that of average amount in the 1. 引言 world, which leads to a great amount of CO2 emissions into 2007 年2月 2日，美国科学小组根据近年气候的变 the atmosphere. CO2 capture and storage (CCS) issues 化，预测全球变暖趋势已迫在眉睫，而人们在过去 50 have been attracted much attention. Chemical-Looping 温室气体的排放成为全球变暖问题之一。CO 作为最重 combustion (CLC) is a novel combustion technology with 2 inherent separation of the greenhouse gas CO2, and low 要的温室气体，研究其捕集和节能减排已成为当今能源 NOx (NO, NO , N O) emissions. The basic concept, 燃烧技术的关键点[1-3] 。目前，一些常用的捕集二氧化碳 2 2 together with the principle and flow characteristics of CLC, 的方法主要有： was described in this paper. The oxygen carrier which (1)碳氢燃料燃烧前脱碳。 played a vital role on CLC was systematically analyzed. (2)氧化燃料燃烧，即使用从空气中分离的纯氧。 This paper mainly reviewed physical characteristic (3) 燃烧后分离，即使用不同的方法从烟道气中分 requirements, material selection and preparation methods [4-5] 离出二氧化碳 。 (mechanical mixing, impregnation, combustion synthesis, 然而，大部分方法会导致能源效率损失，同时从其 sol-gel, co-precipitation, freezing granulation method) of oxygen carrier. Additionally, the differences of mentioned 他燃料气中分离出二氧化碳需要高额费用，会导致整体 preparation methods were also compared. Finally, some 燃烧效率的显著降低。目前，每年全球化石燃料燃烧发 important trends on oxygen carrier in CLC technology are 电排放的 CO2 约占排放总量的 1/3[6]