年产130万辊道窑窑炉设计指导书

景德镇陶瓷学院

专业课程设计说明书

题目:年产130万平米玻化砖天然气辊道窑设计

学 号：201010260103 姓 名：何树斌 院 （系）：材料科学与工程学院 专 业：10粉体工程 指导教师：孙健 日 期：2013.12

目 录

1 前言···································································· 2 设计任务及原始资料···················································· 3 窑体主要尺寸的确定······················································ 3.1 窑内宽的确定························································ 3.2 窑长及各带长度的确定··········································· 3.3 窑内高的确定························································ 4 烧成制度的确定··············································· 5 工作系统的确定·························································· 5.1 排烟系统··························································· 5.2 燃烧系统··························································· 5.3 冷却系统··························································· 5.4 传动系统··························································· 5.5 窑体附属结构······················································· 5.5.1 事故处理孔····················································· 5.5.2 测温孔及观察孔············································ 5.5.3膨胀缝························································ 5.5.4挡板及挡墙··················································· 5.6窑体加固钢架结构形式··············································· 6 燃料燃烧计算···························································· 6.1 空气量···························································· 6.2 烟气量···························································· 6.3 燃烧温度·························································· 7 窑体材料及厚度的确定：列表表示全窑所用材料及厚度······················· 8 热平衡计算······························································ 8.1 预热带及烧成带热平衡计算·········································· 8.1.1热平衡计算基准及范围···········································

8.1.2热平衡框图··················································· 8.1.3热收入项目··················································· 8.1.4热支出项目···················································

8.1.5热平衡方程式············································· 8.1.6预热带与烧成带热平衡表····································· 8.2 冷却带热平衡计算·················································· 8.2.1热平衡计算基准及范围········································· 8.2.2热平衡框图··················································· 8.2.3

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目··················································· 8.2.4 热支出项目··················································· 8.2.5热平衡方程··············································· 8.2.6冷却带热平衡表··········································· 9 烧嘴的选用······························································ 9.1每个烧嘴所需的油（气）压········································· 9.2烧嘴的选用························································ 10 参考文献·······························································

1.前言

辊道窑是近几十年发展起来的新型快烧连续式工业窑炉，在釉面砖、墙地砖、彩釉砖等建筑陶瓷工业生产中已普遍用作主要的烧成设备，近几年正逐步在日用瓷等陶瓷工业中得到应用。

与隧道窑相比，辊道窑用连续多排辊子代替窑车输送制品，取消了窑车，取消了砂封，避免车下窑外冷空气漏入隧道，使窑内同一截面上下温度均匀，大大缩短烧成时间，为优质高产低热耗创造了条件。辊道窑的设计计算包括：窑体主要尺寸计算，燃料燃烧计算、热平衡计算、通风阻力计算等，使用发生炉煤气烧窑，可减少环境污染。

烧成在陶瓷生产中是非常重要的一道工序。烧成过程严重影响着产品的质量，与此同时，烧成也由窑炉决定。

-在烧成过程中，温度控制是最重要的关键。没有合理的烧成控制，产品质量和产量都会很低。要想得到稳定的产品质量和提高产量，首先要有符合产品的烧成制度。然后必须维持一定的窑内压力。最后，必须要维持适当的气氛。这些要求都应该遵循。

全窑利用余热干燥生坯，热效率高，温度控制准确、稳定，传动用齿轮传动，摩擦式联结辊筒，传动平衡、稳定，维护方便，无级调节，控制灵活。通过对其窑炉结构和控制的了解，借鉴其经验数据，结合中试窑的情况，我所设计的辊道窑总长75.07米，内宽3米，烧成温度是1180摄氏度，燃料采用天然气。

为了更好的掌握辊道窑的结构和窑炉设计的程序，我对老师给定的设计任务进行了为期二周的设计计算，并绘制窑体视图。

2.设计任务及原始资料

一、设计任务

年产130万平米仿古砖天然气辊道窑设计； 二、原始数据 （一）玻化砖

1．坯料组成（%）：

SiO2 68.35 Al2O3 16.27 CaO 2.30 MgO 2.65 Fe2O3 0.85 K2O 2.20 Na2O 2.15 I.L 4.85 表2－1：坯料组成（%）

2．产品规格：600×600×8mm 3．入窑水分：<1% 4．产品合格率：95%

5．烧成周期：55分钟（全氧化气氛） 6．最高烧成温度：1180℃（温度曲线自定） （二）燃料 天然气 CO 0.2 H2 0.2 CH4 95.6 C2H4 3.5 H2S 0.3 CO2 0.1 N2 0.1 O2 0 Qnet(MJ/Nm3) 41.58 表2－2：燃料组成

（三）年工作日：330天

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