黑液等离子体二氧化碳气化平衡模型及效率  

Black liquor plasma carbon dioxide gasification equilibrium model and efficiency

作　　者：李许生[1,2] 农光再[2] 覃程荣[2] 王双飞[2] 

机构地区：[1]广西大学化学化工学院,广西南宁530004 [2]广西大学轻工与食品工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2015年第2期483-491,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(31200459);广西自然科学基金创新研究团队项目(2013GXNSFFA019005)

摘　　要：为获得高热力学效率制订最佳方案,进行蔗渣浆黑液等离子体二氧化碳气化技术热力学研究,包括预测固定碳、合成气组分和电能需求,分析进料水分、CO2用量和温度对甘蔗浆黑液等离子体二氧化碳气化的气体组成、气体热值、电能需求和气化效率的影响。基于质量作用定律和质能守恒原理,利用报道的热力学数据建立黑液等离子体二氧化碳气化平衡模型。研究表明,升高温度、增加CO2用量和提高进料水分都导致热力学效率下降。高位热值（HHV）和低位热值（LHV）出现最大值在进料水分0%~10%之间,热力学效率在105.31%~108.84%之间,黑液气化电能需求在132.08~161.98 MJ/kmol绝干BL（黑液）之间。这是黑液等离子体气化炉操作的最佳点,即是工艺参数值优化的参照点。当进料水分超过气化需求时,电能需求增加显著和热力学效率损失严重。To optimum solution for maximum thermodynamic efficiency, the thermodynamic analysis of bagasse pulp black liquor plasma carbon dioxide gasification was researched, including prediction the solid carbon content, synthesis gas composition, and electricity required. Three parameters, feed moisture content, carbon dioxide amount and temperature, were considered, and their effect on the synthesis gas composition, and heating value of the synthesis gas, and electricity required, and efficiencies of the process as demonstrated. Based on the mass action law and the principle of con- servation of mass and energy, a black liquor plasma carbon dioxide gasification equilibrium model was developed by using the thermodynamic data. The resuhs showed that, it is apparent that for an increase in moisture content, CO2 amount and temperature, the efficiencies decrease. HHV（ higher heating value） and LHV（ lower heating value） have maximum values when feed moisture content from 0% to 10% , where the efficiency from 105.31% to 108.84% , and the electricity required from 132. 08 MJ/kmol dry BL（black liquor） to 161.98 MJ/kmol dry BL. This is the optimum point for operating a black liquor plasma gasifier, id the reference point of process parameter optimization. Electricity required increase significantly and thermodynamic efficiency decreased hardly when feed moisture content is more than required.

关 键 词：黑液 等离子体 气化 二氧化碳 合成气 

分 类 号：TS733.9[轻工技术与工程—制浆造纸工程]