无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2014, Vol. 46 ›› Issue (1): 61-.

• 论文 • 上一篇    下一篇

基于二氧化钛热工特性的偏钛酸煅烧系统设计

罗武生1,2,喻胜飞3   

  1. 1.中南林业科技大学机电工程学院,湖南长沙 410004;2.中南大学能源科学与工程学院;
    3. 中南林业科技大学材料科学与工程学院
  • 出版日期:2014-01-10 发布日期:2014-01-13

Design of metatitanic acid calcining system based on thermal characteristics of titanium dioxide

Luo Wusheng1,2,Yu Shengfei3   

  1. 1.College of Mechanical & Electrical Engineering,Central South University of Forestry and Technology,
    Changsha 410004,China;2.School of Energy Science and Engineering,Central South University;3.College of Material
    Science and Engineering,Central South University of Forestry and Technology
  • Published:2014-01-10 Online:2014-01-13

摘要: 以二氧化钛煅烧过程热工特性研究为依据,设计二氧化钛煅烧系统及其煅烧窑温度控制系统,并在生产中测试转窑内的温度梯度及煅烧带温度控制灵敏度。结果表明,在二次风、三次风的调节下,可实现距窑尾14 m的范围内为干燥区域,温度低于500 ℃;在距窑尾14.5~25.5 m区间为脱水、脱硫区,温度在500~750 ℃;在距窑尾25.5~38 m的区间内为煅烧区,温度基本保持在800 ℃左右,只是在距窑头1 m左右时,温度才有上升趋势,这时晶型已完全发生转化。煅烧窑温度控制系统参数控制方法的稳态、动态性能较好, 可以实现系统无超调。

关键词: 二氧化钛, 热工特性, 回转窑, 煅烧带, 温度控制

Abstract: The design of titanium dioxide calcining system and calcining kiln temperature control system was according to the thermal characteristics of titanium dioxide calcination process.The kiln′s temperature gradient and the calcining zone temperature control sensitivity in production were tested.Results showed that the secondary air and tertiary air can control the temperature under 500 ℃ of the dry areas ranged 14 m from the end of kiln.Away from the kiln end 14.5~25.5 m was the dehydration and desulfurization zone and its temperature in the range of 500~750 ℃.Calcining zone was in the range of 25.5~38 m and its temperature remained around 800 ℃.Only about 1 m from the begining of kiln,the temperature showed rising trend and the crystal form has been already completed here.The method of control the parameter of the calcining kiln temperature control system have better steady-state and dynamic properties,can realize system without overshoot.

Key words: titanium dioxide, thermal characteristics, rotary kiln, calcining zone, temperature control

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