烧结旋冷机余热梯级发电技术研究  

Research on Waste Heat Cascade Power Generation Technology of Sintering Helical Cooler

作　　者：赵斌[1] 杜小泽[1] 崔健[2] 梁文龙[2] 徐鸿[1] 

机构地区：[1]电站设备状态监测与控制教育部重点实验室(华北电力大学),北京市昌平区102206 [2]河北省现代冶金技术重点实验室(河北联合大学),河北省唐山市063009

出　　处：《中国电机工程学报》2012年第8期37-43,146,共7页Proceedings of the CSEE

基　　金：河北省自然科学基金项目(E2011209011)~~

摘　　要：余热发电技术是工业余热最佳的科学转换方案和节能减排方式。该文基于烧结矿显热回收技术和场协同理论及分段回收梯级利用方法,研发了螺旋式冷却机、多进气余热锅炉装置和烧结旋冷机梯级发电新工艺系统。并以唐钢烧结环冷机余热回收系统设计参数为基础,对研发的新工艺与唐钢原工艺进行热经济性对比分析。计算表明,在工况II条件下,烧结旋冷机梯级发电新工艺余热资源回收率达82.06%,余热锅炉效率达56.5%,吨矿发电量达27.3kW h,分别比烧结环冷机余热发电原工艺提高了22.06个百分点、2.8个百分点和5.6kW h。研究表明,先进的换热设备和科学的工艺系统配置是提高烧结矿显热高效回收效率的关键所在。该文研究结果为中低品位余热高效回收装备及工艺的研发提供了思路及方案。Waste heat power generation technology is the best scientific conversion program of industry waste heat as well as energy-saving and emission reduction manner.Depends on sinter sensible heat recovery technology,field synergy theory and the way of stage recovery and cascade utilization,the dual-helical cooler,multi-channel heat recovery steam generator（HRSG） and advanced cascade power generation technology system of sintering helical cooler were developed.Based on design parameters of sintering waste heat recovery system in Tangsteel,the thermal economical performance was contacted and analyzed between new processes and original processes in Tangsteel.The calculations indicate that the recovery rate of waste heat resources of sintering helical cooler cascade power generation advanced program reaches 82.06%,and waste heat boiler efficiency reaches 56.5%,power generation per ton sinter reaches 27.3 kW h under the case II,which is 22.06 percentage points,2.8 percentage points and 5.6 kW h higher compared with the original program.The result shows that the key point to improve sinter sensible heat efficient recovery efficiency is mainly due to advanced heat transfer equipment and scientific system configuration.The conclusions will supply schemes and methods for the RD of equipment and technology to recover low grade waste heat efficiently.

关 键 词：烧结旋冷机 场协同 分段回收与梯级利用 发电工艺集成 热经济性 

分 类 号：TK115[动力工程及工程热物理—热能工程]