内容发布更新时间 : 2024/4/23 22:53:01星期一 下面是文章的全部内容请认真阅读。

年产30万吨合成氨造气工段工艺设计

The Design of Producing Coal Gas about Synthe

sis of

Ammonia 300000t/a

目 录

摘要 ................................................................................................................................. I Abstract ........................................................................................................................ II 引言 ................................................................................................................................. 1 第一章 绪论 ................................................................................................................. 2

1.1 煤气化发展史 ................................................................................................... 2 1.2 国内外发展现状 ............................................................................................... 4

第二章 生产方法的选择 ......................................................................................... 5

2.1生产方法的介绍 ................................................................................................ 5 2.1.1 固定床气化法 ................................................................................................ 5 2.1.2 流化床气化..................................................................................................... 6 2.1.3 气流床气化..................................................................................................... 7 2.2 生产方案的选择及论证 ................................................................................... 7

第三章 常压固定床间歇气化法 ........................................................................... 8

3.1 固定床气化法的特点 ....................................................................................... 8 3.2 半水煤气定义 ................................................................................................... 8 3.3 半水煤气制气原理 ........................................................................................... 8 3.3.1 煤气发生炉构造及气化反应的分区 ............................................................ 8 3.3.2 制气原理......................................................................................................... 9 3.4 生产半水煤气对固体原料性能的要求 ......................................................... 10 3.5 间歇式制半水煤气的工艺条件 ..................................................................... 12 3.6 生产流程的选择及论证 ................................................................................. 14

3.7 间歇式气化的工作循环 ................................................................................. 15 3.8 间歇式制半水煤气工艺流程 ......................................................................... 16 3.9 各主要设备简介 ............................................................................................. 17 3.9.1 煤气发生炉................................................................................................... 17 3.9.2 燃烧室 ........................................................................................................... 18 3.9.3 废热锅炉....................................................................................................... 19 3.9.4 洗气箱 ........................................................................................................... 19 3.9.5 洗涤塔 ........................................................................................................... 19 3.9.6 烟囱 ............................................................................................................... 20 3.9.7 自动机 ........................................................................................................... 20

第四章 工艺计算...................................................................................................... 20

4.1 已知条件.......................................................................................................... 20 4.2 物料及热量衡算 ............................................................................................. 23 4.2.1 吹风阶段的计算 .......................................................................................... 23 4.2.2 制气阶段的计算 .......................................................................................... 26 4.2.3 总过程计算................................................................................................... 30 4.3 配气计算.......................................................................................................... 34 4.4 消耗定额 ........................................................................................................ 35 4.5 吹净时间核算 ................................................................................................. 35 4.6 废热锅炉的热量衡算 ..................................................................................... 35 4.6.1 已知条件....................................................................................................... 35 4.6.2 热量衡算....................................................................................................... 37 4.6.3 热量平衡和总固体平衡 ............................................................................ 41 4.7 夹套锅炉的物料及热量衡算 ......................................................................... 42 4.7.1 已知条件....................................................................................................... 42