Experimental research on combustion fluorine retention using calcium-based sorbets during coal combustion(Ⅰ)  

作　　者：齐庆杰 林志颜 刘建忠 吴宪 周俊虎 岑可法 

机构地区：[1]College of Resource and Environment Engineering,Liaoning Technical University,Fuxin 123000,China [2]College of Mechanical and Energy Engineering,Zhejiang University,Hangzhou 310027,China

出　　处：《Journal of Coal Science & Engineering(China)》2008年第2期303-307,共5页煤炭学报（英文版）

基　　金：the National Natural Science Foundation of China(50476032);China Postdoctoral Science Foundation(2004035555);New Century of Talents Scheme Projects of Universities in Liaoning Province(RC-04-04)

摘　　要：In order to provide experimental guide to commercial use of fluorine pollution control during coal combustion, with fluorine pollution control during coal combustion in mind, this paper proposed the theory of combustion fluorine retention technology. Feasibility of fluorine retention reaction with calcium-based fluorine retention agent was analyzed through thermo-dynamic calculation during coal combustion. By simulating the restraining and retention effects and influential factors of calcium-based sorbets on vaporized fluoride during experimental combustion using fixed bed tube furnace, the paper systematically explored the influential law of such factors as combustion temperature, retention time, and added quantities of calcium-based sorbets on effects of fluorine retention. The research result shows that adding calcium-based fluorine retention agent in coal combustion has double effects of fluorine retention and sulfur retention, it lays an experimental foundation for commercial test of combustion fluorine retention.During the fixed bed tube furnace combustion experimental study,stimulated the calcium-based sorbent grain size and microstructured influencing factors to explain the fluorine retention effect influence law,and expounded the combustion fluorine retention agent developing principle,and probed into the high-temperature fluorine retention agent technical approach.The results show that the calcium-based sorbent particle grain size and pore structure also have the bigger influence on the combustion fluorine retention ef- fect,and reducing the calcium-based sorbent particle grain size and improving the calcium sorbent structure characteristics at very high temperature to enhance the fluorine retention effect is the important approach to the fluorine retention agent development.

关 键 词：coal combustion calcium-based fluorine retention agent thermodynamics combustion experiment influential factors 

分 类 号：TK16[动力工程及工程热物理—热能工程]