西南科技大学本科生毕业论文
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5000t/d水泥熟料预分解窑窑尾（低氮氧化合
物排放）工艺设计
摘要：水泥是社会经济发展最重要的建筑材料之一，在今后几十年甚至是上百年之
内仍然是无可替代的基础材料，对人类生活文明的重要性不言而喻。
以预分解窑为代表的新型干法水泥生产技术已经成为当今水泥工业发展的主导技术和最先进的工艺，它具有生产能力大、自动化程度高、产品质量高、能耗低、有害物排放量低等一系列优点。
但在水泥生产过程中会放出一些有害物质，尤其是氮氧化合物，按照要求本设计采用一系列的方法，以求降低氮氧化合物的排放浓度。本设计依据当今新型干法水泥生产技术的设计要求进行，主要任务是窑尾部分的工艺设计，包括新型干法水泥生产对原料、燃料的质量要求，配料方案的设计和配料计算，物料平衡计算，主辅机平衡与设备选型，储库计算和窑尾工艺设计。
关键词：5000t/d； 预分解窑； 低氮排放； 工艺设计
The Process Design of the Back End of
Precalciner Kiln for 5000T/D Cement
Clinker(Low Nitrogen Oxide
Emissions)
Abstract:Cement is one of the most important building materials of the social and
economic development, within the coming decades or even a century,Cement is still no substitute for basic materials, the importance of human civilization is self-evident.
calciner kiln as the representatives has become leading technology and the most advanced technology of the cement industry. It has many advantages, such as high throughput, a high degree of auto mation, high quality products, low energy consumption, low emissions of harmful substances, etc.
西南科技大学本科生毕业论文
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In the production process of cement will release a number of harmful substances,particularly nitrogen oxides,according to the requirement of this design,the design uses a range of methods to reduce the concentration of nitrogen oxide .Based on the design of new dry cement production technology in today's design requirements, the main task is the back-end part of the process design, including the production of cement raw materials, fuel quality requirements, the design of ingredients and ingredients, the material balance calculation , the main auxiliary balance and equipment selection, calculation and storage back-end process design.
Key words: 5000T / D, Low Nitrogen Emissions, Process Precalciner kiln, Design
西南科技大学本科生毕业论文
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目 录
第1章 绪论........................................................... ..1
1.1 引言...........................................................1 1.2设计简介........................................................1
第2章 建厂基本资料......................................................3
2.1设计题目...........................................3 2.2建厂条件?????????????????????????3 2.3原料质量要求....................................................3 2.3.1水泥原料质量要求.......................................... ...3 2.3.2石膏和混合材质量要求.........................................4
2.4燃料品质要求....................................................5
2.5熟料热耗的选择..................................................6 2.6生产方法和窑型的选择............................................6 第3章 配料计算与物料和主机平衡..........................................8 3.1配料计算........................................................8 3.1.1原料原始数据.................................................8
3.1.1.1原燃料化学成分............................................8 3.1.1.2原、燃料水分..............................................8 3.1.1.3烟煤的工业分析............................................8 3.1.1.4烟煤的元素分析............................................8 3.1.2水泥配料方案..................................................8 3.1.2.1三个率值的选择............................................9 3.1.2.2煤灰掺入量的计算.........................................10 3.1.2.3干燥原料配合比试配.......................................10 3.1.2.4干燥原料配合比调整.......................................12 3.1.2.5生料湿原料配合比的计算...................................14 3.1.2.6生料配合比最终确定.......................................14 3.2物料平衡计算...................................................15
西南科技大学本科生毕业论文
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3.2.1烧成车间生产能力和工厂生产能力的计算........................15
3.2.2原燃料消耗定额计算..........................................18 3.2.3全厂物料平衡表..............................................24 3.3主机平衡与选型.................................................24 3.3.1车间工作制度确定............................................24 3.3.2主机选型....................................................25 3.3.3主机平衡表..................................................32 第4章 储库计算........................................................33
4.1各种物料储存期的确定............................................33 4.2各种原料储存设施的计算..........................................34 4.2.1石灰石、原煤、联合预均化堆场、石膏、矿渣预均化堆场计算........34
4.2.1.1石灰石预均化堆场计算......................................34 4.2.1.2原煤预均化堆场计算..................... ..................35 4.2.1.3联合储库计算........................... ..................36 4.2.1.4石膏、矿渣预均化堆场计算.................. ...............36
4.3各种物料的储存设施计算..........................................37 4.3.1生料配料站.............................................. ... .37 4.3.2生料均化库............................................. .... .39 4.3.3熟料库.................................................. ... .40 4.3.4熟料配料站.................................................. 40
4.4水泥库计算...................................................... 41 4.5储库一览表.......................................................42
第5章 物料和热平衡计算......................................... ... 43
5.1原始资料................................................... ....43 5.2物料平衡与热平衡计算........................................ ...44 5.2.1 物料平衡计算............................................. ...44 5.2.2 热平衡计算............................................... ...50 5.3物料平衡表与热平衡表的编制................................... ..54
第6章 窑外分解系统的设计计算......................................56
6.1原始资料..................................................... ..56
西南科技大学本科生毕业论文
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6.2相关参数的设定..................................................56 6.3单位烟气的计算..................................................58 6.4窑尾系统各部位烟气量计算..................................... ..58 6.5窑尾各部位烟气量汇总表....................................... ..61 6.6分解炉设计方案选择..............................................61 6.7分解炉结构尺寸计算........................................... ..63 6.8旋风筒设计方案选择..............................................66 6.9旋风筒结构尺寸计算..............................................68 6.10分解炉与旋风筒尺寸汇总表.......................................75 第7章 窑尾设备的计算及选型...................................... ... ...77 7.1窑尾冷却器（喷水装置）的计算及选型....................... . ... ...77 7.2窑尾收尘器选型..................................................77 7.3窑尾高温风机以及窑尾排风机选型..................................78 7.4烟囱的计算选型..................................................78 7.5提升机及喂料装置的选型..........................................79 第8章 低NOX排放技术........................................... .. ... 86 第9章 烧成车间工艺布置........................................... .....88 第10章 全厂工艺平面布置............................................. ..89
9.1全厂总平面布置基本原则..........................................89 9.2全厂总平面布置说明.......................................... ...90 结语 ....................................................................91 致谢................................................................. .. .92 参考文献.......................................................... .. .. ..93