热解半焦与发酵药渣分段富氧共燃特性模拟研究  

Simulation Study on Oxy-fuel Co-combustion Characteristics of Pyrolyzed Semi-coke and Antibiotic Filter Residue

作　　者：王长安[1] 罗茂芸 唐冠韬 金丽艳 赵林 车得福[1] WANG Chang’an;LUO Maoyun;TANG Guantao;JIN Liyan;ZHAO Lin;CHE Defu(State Key Laboratory of Multiphase Flow in Power Engineering(Xi’an Jiaotong University),Xi’an 710049,Shaanxi Province,China)

机构地区：[1]动力工程多相流国家重点实验室(西安交通大学),陕西省西安市710049

出　　处：《中国电机工程学报》2022年第18期6553-6562,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52176129);国家重点研发计划项目(2017YFB0602003)。

摘　　要：过剩热解半焦的高效清洁利用问题存在巨大挑战,抗生素发酵药渣是一种生物质类固体废弃物,亦需要妥善处置或资源化利用。为解决半焦和药渣的共处置及资源化利用问题,该文提出一种半焦–药渣分段共燃方案,并利用Aspen Plus流程模拟软件对半焦–药渣富氧分段共燃行为进行模拟研究。结果表明:在富氧共燃中提高半焦掺混比例,会增加烟气总量和生成的CO_(2)量,CO_(2)体积分数提高、H_(2)含量降低。空气和O_(2)/Ar气氛下的燃料共燃过程相近,烟气总流量基本相同,但都小于富氧气氛下的烟气总流量。随着氧气浓度的升高,烟气总流量减小,CO_(2)和H_(2)O体积分数增加。提高半焦掺混比例和氧气浓度能促进固定碳的燃烧,提高燃烧特性,而富氧燃烧有利于CO_(2)的富集和减排。可知,半焦和药渣富氧燃烧共处置实现固废资源的有效利用是可行的。The problem of efficient and clean utilization of excess pyrolyzed semi-coke is a huge challenge.The antibiotic filter residue is a kind of biomass solid waste,which also requires proper disposal or resource utilization.In order to solve the co-disposal and resource utilization of semi-coke and antibiotic filter residue,a semi-coke and filter residue staged co-combustion scheme was proposed in this paper,and the Aspen Plus process simulation software was used to simulate the behavior of semi-coke and filter residue in staged oxy-fuel co-combustion.The results show that an increase in the blending ratio of semi-coke in oxy-fuel co-combustion increases the total amount of flue gas and the amount of CO_(2) generated.The volume fraction of CO_(2) increases,and the contents of H_(2) decrease.The co-combustion process of solid fuel in air and O_(2)/Ar atmospheres is similar and the total flue gas flow is almost the same,which is less than that in oxyfuel atmosphere.As the oxygen concentration increases,the total flue gas flow decreases;the volume fractions of CO_(2) and H_(2)O increase.Increasing the blending ratio of semi-coke and oxygen concentration can promote the combustion of fixed carbon and improve the combustion characteristics,while the oxy-fuel combustion is conducive to CO_(2) enrichment and emission reduction.It is proved that the co-disposal of semi-coke and filter residue by oxy-fuel combustion can realize the effective utilization of solid waste resources.

关 键 词：碳减排 热解半焦 抗生素药渣 富氧燃烧 协同共处置 

分 类 号：TQ534[化学工程—煤化学工程]