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题名	基于粉矿的熔态还原系统模拟研究
作者	王立新
学位类别	博士
答辩日期	2000-06
授予单位	中国科学院研究生院
导师	许志宏 ; 杨章远
关键词	熔态还原 多级流化移动床 过程集成 清洁生产 二次燃烧
其他题名	Simulation of New Smelting Reduction System Based on Ore Fines
学位专业	化工冶金
中文摘要	作为一种新的炼铁技术，溶态还原具有工艺简单和无污染等特点，是实现清洁制铁的关键技术。虽然基于块矿的COREX工艺已经成功地实现了工业运行，但是能够处理粉矿的熔态还原工艺至今未能取得令人满意的结果。在长期参与国家熔态还原基础研究的过程中，中国科学院化工冶金研究所提出了一套基于粉矿的熔态还原炼铁新流程。该流程的核心设备为多级流化移动床反应器和闪速熔化滴流床终还原炉。前者的功能是实现粉矿的深度预还原，后者则进行预还原矿粉的熔化和终还原，同时经由块煤的燃烧气化产生足够的还原气体。本工作的任务是对上术工艺进行更深入的研究，实现部分工艺参数的量化，并能够对未来的试验工作一定的理论基础。主要工作包括：1.对当前基于粉矿的制铁技术进进行了系统的综述；2.针对预还原过程中的析碳和氧化铁还原过程进行了研究，并利用实验数据拟合了平行反应的动力学参数；3.对多级流化劝床中气固相流动规律进行了研究，并提出了反应器设计方法和步骤；4.编制了非等温多级流化床预还原过程中气固两相传质、传热和反应过程的数学模型计算程序，计算了各种因素可能对反应器操作的影响；5.分析了二次燃烧的原理和缺陷，针对新工艺中的闪速熔化滴流床终还原进行了计算，探讨了其中各个虚拟单元的技术可行性；6.分析了以熔态还原技术为中心实现钢铁清洁生产的关键问题，以及利用过程集成技术实现煤气最佳利用的各种方案。7.针对我国小型高炉炼铁工艺提出了一套新的改造方案；8.利用面向对象的方法设计并编写了模拟软件，使代码易于阅读和移植，为后研究者的努力提供了方便；9.广泛利用Internet上的信息资源，并将引文WWW页面全文下载和存贮，以便下一步构筑网络资源数据库。
英文摘要	As a new iron making technology, smelting reduction has excellent characters such as short production line and environment friendly plant, etc, which is the core technology for realizing clean iron making. Although the COREX process, based on lump ores and pellets, has been come to industrial using, smelting reduction processes dealing with ore fines have no satisfactory results up to now. During the long period taking part in the national fundamental research work of the smelting reduction process, researchers of the Institute of Chemical Metallurgy had work out a new smelting reduction process which can be used to treat ore fines. The two main devices of its are the MFMBR (Multi-layer Fluidized Moving Bed Reactor) and the flash smelting end reduction furnace. The ore fines are firstly pre-reduced in the former, and then melted and end reduced in the latter. The object of this article is to push the research work of the fore-mentioned process forward by constructing models and calculating main process parameters for future experiments and pilot tests. The main works and results of this dissertation include: 1. The new iron-making technologies based on fine ores had been reviewed; 2. The CO decomposition reaction and the reduction of iron oxide in prereduction process had been studied, and the kinetic parameters of the parallel reactions had been fitted; 3. The flow nature of the gas and solid phase in MFMBR had been studied and the design method and steps were discussed; 4. The model of iron ore pre-reduction process in MFMBR with mass, heat transfer and chemical reaction had been constructed, and calculated to show how some possible factors affect the reactor operation. 5. The theory and problems of post-combustion had been discussed, and some calculation for two virtual units in flash smelting end reduction furnace had been carried out; 6. According to the latest theory of clean production, the primary factors for achieving clean iron steel making is to adopt the smelting reduction as core technology instead of blast furnace. 7. The problem of how to make best use of the residual coal gas had been discussed. 8. The object-oriented simulation software with source code has been worked out and will be put onto Internet. 9. The conceptual design of a new smelting process for rebuilding the present small blast furnace process in China had been made.
语种	中文
公开日期	2013-09-26
页码	173
内容类型	学位论文
源URL	[http://ir.ipe.ac.cn/handle/122111/1929]
专题	过程工程研究所_研究所（批量导入）
推荐引用方式 GB/T 7714	王立新. 基于粉矿的熔态还原系统模拟研究[D]. 中国科学院研究生院. 2000.

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