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湖南化工职业技术学院毕业设计
湖南化工职业技术学院
毕业设计题毕业设计类型姓名班
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毕 业 设 计
3.0万t/a轻质碳酸钙工艺设计与碳化塔选型 □ 产品设计 √工艺设计 □方案设计 刘宏伟 化工1313 化学工程学院 应用化工技术 魏义兰 助教 王宇 2015年 11 月 16 日
湖南化工职业技术学院毕业设计
摘 要
本设计主要采用连续鼓泡碳化法生产轻质碳酸钙，并采用了三塔串联连续鼓泡碳化工艺；在文中介绍了轻质碳酸钙产品的性质、分类、特点和应用，详细的阐述了碳化法生产轻质碳酸钙的原理、生产方法、工艺条件、影响碳化的因素；根据3万t/a的年产量进行了生产过程的工艺计算和碳化塔设备的计算与选型；采用CAD绘出了生产过程的工艺流程图、碳化塔的结构图和设备平面布置图。 关键词：轻质碳酸钙；连续鼓泡碳化法；碳化塔选型
湖南化工职业技术学院毕业设计
Abstract
This design mainly uses continuous bubbling carbonation method to produce calcium carbonate,and the three towers in series continuous bubbling carbonation process;the nature of light calcium carbonate product is introduced in this paper, classification, characteristics and application,detailed describes the principle of carbonation for producing light calcium carbonate,production method, process conditions, factors affecting carbonation; according to an annual output of 3 million T / a were calculation and selection of the production process of the process calculation and carbonization tower equipment; CAD draw using the production process of the process flow diagram, carbonation tower structure chart and equipment layout.
Key words: light calcium carbonate;continuous bubbling carbonation method; the type selection of carbonization tower
湖南化工职业技术学院毕业设计
目 录
第一章 文献综述 ......................................................................................................... 1
1.1定义................................................................................................................... 1 1.2性质................................................................................................................... 1 1.3分类................................................................................................................... 1
1.3.1根据碳酸钙晶粒形状分类..................................................................... 1 1.3.2按其平均粒径(d)分类 ............................................................................ 2 1.4特点................................................................................................................... 2
1.4.1轻质碳酸钙的特点................................................................................. 2 1.4.2重质碳酸钙的特点................................................................................. 2 1.5用途................................................................................................................... 2 第二章生产工艺 ........................................................................................................... 4
2.1碳化原理........................................................................................................... 4 2.2生产方法........................................................................................................... 4
2.2.1碳化法..................................................................................................... 4 2.2.2氯化钙法................................................................................................. 4 2.2.3苛化碱法................................................................................................. 4 2.2.4联钙法..................................................................................................... 4 2.2.5苏尔维法................................................................................................. 5 2.3碳化工艺生产方法........................................................................................... 5
2.3.1间歇鼓泡碳化法..................................................................................... 5 2.3.2连续鼓泡碳化法..................................................................................... 6 2.3.3连续喷雾碳化法..................................................................................... 6 2.3.4超重力反应结晶法................................................................................. 7 2.4普通轻质碳酸钙生产的流程方框图............................................................... 8 2.5流程说明........................................................................................................... 8 2.6碳化工艺条件的影响....................................................................................... 8
2.6.1温度......................................................................................................... 8 2.6.2压力......................................................................................................... 9
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