棉秆循环流化床气化初步实验研究  

Preliminary experimental study of cotton stalk gasification in circulating fluidized bed

作　　者：范晓旭[1] 姜桂林[1] 郭东彦[1] 肖琦[1] 初雷哲[1] 杨立国[1] 贤建伟[2] 

机构地区：[1]山东省生物质气化技术重点实验室山东省科学院能源研究所,山东济南250014 [2]华北电力大学,河北保定071003

出　　处：《可再生能源》2010年第5期68-71,共4页Renewable Energy Resources

基　　金：国家"863"计划资助项目(2009AA05Z409);山东省科技攻关项目(2010GGX10702)

摘　　要：我国是农业大国,秸秆储量丰富,过去秸秆多在田间地头焚烧处理,严重污染环境。利用秸秆进行气化,产物燃气用途广泛,副产品草木灰可以用来制作化肥,实现能源梯级利用。文章利用工业规模的循环流化床装置进行了棉秆气化初步实验研究,结果表明,棉秆可以稳定气化,炉内温度均匀稳定,产气量及燃气热值稳定。但由于棉秆内富含碱金属,长时间运行会与作为床料的河砂反应,导致床料中的碱金属富集,降低床料熔点,出现结渣现象。China is a large agricultural country; most of the straw is incinerated in the fields with severely pollution to the environment in the past. By straw gasification, the product gas could be extensively used, the by-product of plant ash can be used to produce fertilizers in order to achieve graded use of energy. This article shows a preliminary experimental study of cotton stalks gasification by use of a industrial-scale circulating fluidized bed gasifier. The results show that cotton stalks could be gasified stably, the temperature in the furnace is uniform and fixed, the gas production and gas heat value is stable. However, cotton stalk is rich in alkali metals, which could react with sand during the long-running, and could lead to enrichment of alkali metal in the beds, and lower the bed material melting point, the slagging phenomenon will occur.

关 键 词：循环流化床 棉秆气化 燃气品质 结渣 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.2[农业科学—农业机械化工程]