4220KV铝电解整流所一次系统初步设计(400kA) - 图文

220KV铝电解整流所一次系统初步设计（400kA）

摘 要

大型化是当今世界铝电解技术发展的大趋势。在现有的320kA~350kA大型铝电解槽基础上，进一步开发并建设高效、稳定和更为节能的400kA大型铝电解槽技术是当今世界各大铝业公司研究和追求的目标。并且我国已经有多家铝电解企业已经建成400kA级铝电解生产线。

我们紧随时代步伐，设计了400kA预焙槽铝电解车间。车间设计包括厂址选择、电解槽设计、电压平衡、能量平衡劳动定员及成本核算等。该设计的年产量为22万吨，电流效率高达94%。经过多方论证厂址选择伊川县工业园区。

关键词：铝电解槽，物料平衡，能量平衡，电压平衡，车间设计

I

The Design of 400kA Pre-baked Anode Aluminum

Reduction Plant

ABSTRACT

Large-scale is the general trend of aluminium electrolysis technological development in the world nowadays．Developing more efficient，more stable and more energy-saving 400kA aluminium reduction cell technology，based on the existing 320kA~350kA aluminium reduction cell，is the goal studied and chased by worldwide major aluminium companies．And there are a few aluminum electrolysis enterprises that have built 400kA grade aluminum electrolytic production line．

Following the pace of times，we complete the design of the 400kA pre-baked aluminum electrolysis workshop．The designs include site-selection， designs of electrolyzers，voltage balance, energy balance，labor quota and cost accounting and so on．Yield of the design reaches to the annual output of 220000 tons，and the current efficiency as high as 94%．After many discussions，we decide to choose Yichuan County Industrial Park as the site．

KEY WORDS：aluminum reduction cell，material balance， energy balance，voltage balance，the design of workshop

目 录

II

前 言 .................................................................................................. 1 第一章 铝电解简介 ........................................................................... 3

§1.1 铝的性质及用途 ................................................................. 3

§1.1.1 铝的性质 ................................................................... 3 §1.1.2 铝的用途 ................................................................... 4 §1.2 铝电解简史及发展现状 ..................................................... 4

§1.2.1 铝电解简史 ............................................................... 5 §1.2.2我国铝电解技术发展现状 ......................................... 6 §1.2.3 世界铝电解工业技术现状 ........................................ 7 §1.3 铝电解用原料与原材料 ..................................................... 9

§1.3.1 铝电解原料——氧化铝 ............................................ 9 §1.3.2 铝电解熔剂——氟化盐 .......................................... 10 §1.3.3 铝电解预焙阳极炭块 .............................................. 12 §1.4 铝电解过程描述 ............................................................... 12 §1.5 铝电解槽与电解槽系列 ................................................... 13

§1.5.1 阴极装置 ................................................................. 13 §1.5.2 阳极装置 ................................................................. 14 §1.5.3 母线装置 ................................................................. 15 §1.5.4 使用寿命 ................................................................. 15

第二章 厂址选择与论证 ................................................................. 16

§2.1. 电力供应 .......................................................................... 16 §2.2. 运输系统 .......................................................................... 17 §2.3. 外围服务 .......................................................................... 17 §2.4. 环境和土地 ...................................................................... 17 第三章 技术经济 ............................................................................. 19

§3.1 主要技术经济指标的选择论证 ........................................ 19 §3.2 综合经济技术指标的计算 ................................................ 20 §3.3 主要经济技术指标的确定与列表 .................................... 22 第四章 物料平衡 ............................................................................. 24

III

§4.1 物料平衡的计算 ............................................................... 24 §4.2 物料平衡列表 ................................................................... 25 第五章 电解槽结构的设计 ............................................................. 27

§5.1 概述 .................................................................................. 27 §5.2 阳极结构 ........................................................................... 27 §5.3 阴极结构 ........................................................................... 28

§5.3.1 槽壳 ......................................................................... 28 §5.3.2 内衬及保温绝热结构 .............................................. 29 §5.4 母线结构 ........................................................................... 30

§5.4.1. 阳极母线 ................................................................ 30 §5.4.2. 阴极母线 ................................................................ 32 §5.4.3 短路母线 ................................................................. 33

第六章 电压平衡 ............................................................................. 35

§6.1 实际分解电压 ................................................................... 35 §6.2 电解质电压 ....................................................................... 35 §6.3 阳极电压降 ...................................... …… 此处隐藏：5192字，全部文档内容请下载后查看。喜欢就下载吧 ……