油田废液煤浆的燃烧特性及反应动力学分析  

Combustion Characteristics of Coal Slurry in the Waste Liquid in Oil Fields and Their Reaction Kinetic Analysis

作　　者：向轶[1] 庞德新 周建平 林森明 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027 [2]新疆油田公司工程技术公司,新疆克拉玛依834000

出　　处：《热能动力工程》2016年第7期86-91,137,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家重点研发计划基金资助项目(2016YFB0600505)

摘　　要：采用热重法分别研究了油田废液煤浆、普通水煤浆的着火燃烧特性,并根据实验结果确定了一系列燃烧特性指数,反应动力学参数则用反应级数模型(n=3)求得。结果显示:油田废液煤浆、普通水煤浆的燃烧TG(热重曲线)都会经历失水阶段、质量稳定阶段、着火燃烧阶段和燃尽阶段;其DTG(微商热重曲线)都有两个失重峰,分别代表快速失水过程、挥发分和固定碳的燃烧反应过程;油田废液煤浆的着火温度、燃尽温度及燃烧活化能均低于普通水煤浆,其它各项燃烧特性指数也都优于后者,由此说明油田废液中的碱金属离子对水煤浆的燃烧性能有明显促进作用。By using the thermogravimetry,studied respectively were the ignition and combustion characteristics of coal slurry in waste liquid in oil fields and common coal-water slurry and determined were a series of combustion characteristic indexes. In this connection,the reaction kinetic parameters were obtained by using the reaction order model( n =3). It has been found that the combustion thermogravimetric curves of the coal slurry in waste liquid in oil fields and common coal-water slurry will always experience their water loss stages,mass stabilization stage,ignition and combustion stage as well as the burn-out stage. Both differential thermogravimetric curves have two weight loss peaks,respectively representing the rapid water loss process and volatile and fixed carbon combustion and reaction process. The ignition temperature,burn-out temperature and combustion activated energy of the coal slurry in waste piqued in oil fields are all lower than those of the common coal-water slurry,however,other various combustion characteristic indexes are superior to those of the latter,thus indicating that the alkaline metal ions in the waste liquid in oil fields play an obvious role in enhancing the combustion performance of coal-water slurry.

关 键 词：油田废液 水煤浆 热重曲线 燃烧特性指数 反应动力学参数 

分 类 号：TD313[矿业工程—矿井建设] TD727