2万吨年硫酸法钛白黑段设计论文.doc

2万吨/年硫酸法钛白黑段设计 摘 要 针对钛矿原料的特性，设计采用硫酸法生产钛白粉工艺，设计规模为年产量2万吨。生产过程原矿粉碎、酸解、沉降、泥浆压滤、结晶、圆盘过滤、控制过滤、浓缩以及三废处理等。在设计中，对酸解、沉降、结晶、浓缩工序 关键词： 钛白粉，硫酸法，工设计 ABSTRACT In view of the characteristics of limonite raw materials in Pan Zhihua, this paper designs with titanium white sulfuric acid production process and the scale of annual production is 20,000 tons. The production process includes undressed ore smashing, acidolysis, subsidence, filter pressing, crystallization, disc filtration controlled filter, concentration, and the process of waste treatment. The paper designs on these process -es and illustrates the flow chart of these process. Based on the daily production,the paper designs on acidolysis, subsidence, crystallization and concentration processes with material balance and energy balance. Therefore, it provides the basis for the equipment selection. In the equipment shaping stage, it designs on major installation for computation and shaping. Base on the explanation of material weight, thermal weight, equipment shaping and workshop arrangement, finally it obtained the design instruction, equip –ment list and flow chart with controlling point. Keywords titanium dioxide, Sulfuric acid method, Process design of black section 目 录 要…………………………………………………………………………………Ⅰ ABSTRACT…………………………………………………………………………Ⅱ  1绪论 1 1.1概述 1 1.1.1课题背景 1 1.1.2设计的目的、意义 1 1.1.3国内外现状、水平、发展趋势 2 1.2设计依据和设计原则 4 1.2.1设计依据 4 1.2.2设计原则 5 1.3设计基础资料 5 1.4设计范围 5 2工程分析 7 2.1建设项目概况 7 2.1.1建设项目名称、性质和地点 7 2.1.2建设规模、内容 7 3两万吨/年钛白粉生产黑段工艺设计 8 3.1黑段工艺流程图 8 3.2酸解工段工艺设计 8 3.2.1原矿粉碎单元 8 3.2.3 酸解单元 10 3.2.3沉降/泥浆压滤单元 12 3.3结晶工段工艺设计 13 3.3结晶工段工艺设计 14 3.3.1结晶单元 14 3.3.2圆盘过滤单元 16 3.3.3控制过滤单元 17 3.3.4浓缩单元 18 4物料及热量衡算 20 4.1酸解工段物料及热量衡算 20 4.1.1 酸解物料衡算 20 4.1.2沉降及泥浆处理工序物料衡算 22 4.1.3 酸解热量衡算 22 4.1.4酸解物料平衡图 24 4.1.5热量平衡图 24 4.2.结晶工段物料及热量衡算 24 4.2.1结晶工序物料衡算 24 4.2.2圆盘过滤工序物料衡算 25 4.2.3控制过滤工序物料衡算 26 4.2.4浓缩工序物料衡算 26 4.2.5结晶工序热量衡算 27 4.2.6浓缩工序热量衡算 27 4.2.7结晶工段物料平衡图 29 4.2.8结晶工段热量平衡图 29 5设备选型 30 5.1主要设备选型原则 30 5.2主要设备选型计算 3