几种因素对天然焦-H_2O气化反应活性的影响  

Influences of Several Factors on Natural Coke-H_2O Gasification Reactivity

作　　者：林良生[1] 赵长遂[1] 庞克亮[1] 向文国[1] 

机构地区：[1]东南大学洁净煤发电及燃烧技术教育部重点实验室,南京210096

出　　处：《燃烧科学与技术》2009年第2期151-154,共4页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(90410009);国家重点基础研究发展计划(973)资助项目(2007CB2100101)

摘　　要：在Therm ax500型加压热重分析仪上进行了天然焦-H2O气化反应试验,分析了常压下气化温度、水流量、氧气分压、反应气氛和灰分等因素的影响.结果表明,气化温度升高,天然焦-H2O气化反应明显加快;随着水流量加大,碳转化率有所增大,但水流量达到0.07 mL/m in后,碳转化率不再随水流量的进一步增加而变化;在气化剂中加入少量纯氧能有效促进气化反应;天然焦-H2O的气化速率明显大于天然焦-CO2的气化速率;天然焦脱灰后碳转化率略有降低.The experiments on natural coke-H2O gasification reaction were carried out on a Thermax500 pressurized thermogravimetric （TG） analyzer. Under atmospheric pressure, the influences of several factors, such as temperature, water flow rate, O2 partial pressure, reaction atmosphere and ash content, on natural coke-H2O gasification reaction were analyzed. The results indicate that with the rise of temperature, the natural coke-H2O gasification reaction accelerates obviously; the carbon conversion rate climbs as water flow rate increases, but when water flow rate reaches 0.07 mL/min, the carbon conversion rate will stop changing further with water flow rate; adding a small amount of O2 to the reaction gas will speed gasification reaction effectively; the gasification rate of natural coke-H2O is greater than that of natural coke-CO2; the carbon conversion rate declines slightly when the natural coke is demineralized.

关 键 词：天然焦 气化 温度 水流量 氧气分压 灰分 

分 类 号：TQ517[化学工程]