氯气处理工艺设计说明书

四川理工学院毕业设计

80kt/a烧碱装置氯气处理工序工艺设计

摘要

本设计为80kt/a烧碱装置氯气处理工序工艺设计，采用直接冷却与间接冷却相结合，二段组合塔（填料+泡罩）干燥工艺，经酸雾除雾器后的工艺气体中含水量下降到30ppm，使用离心压缩机进行压缩输送；设计对工艺流程与工艺参数作了具体选择与详细说明，进行了物料衡算及热量衡算，设备设计与选型和车间布置设计；做了环境保护与经济分析；绘制了带控制点的工艺流程图，一段填料干燥塔装配图和车间平面布置图。

关键词：氯气处理；冷却；二段组合塔；干燥；离心压缩机

Abstract

This design for the 80 kt/a chlorine treatment technology of caustic soda units，and the design integrated direct cooling with indirect cooling，the second phase combination tower (filler and bubble cap column) drying process，through the process of water content in gas after acid mist eliminator down to about 30 PPM，using centrifugal compressor to compress and transport．As design of technological process and technological parameters selection and detailed instructions，carried out the material balance and heat balance，equipment design and type selection and layout of the workshop design．Did the environmental protection and economic analysis．Draw a process flow chart with control points，a packing drying tower assembly drawings and workshop layout．

Key words：Chlorine treatment；Cooling；The second phase combination tower；Drying；Centrifugal compressor

目录

目录.......................................................... I II 第一章总论................................................. - 1 -

1.1 设计概况............................................ - 1 -

1.2 设计依据............................................ - 1 -

1.3 氯气处理工艺介绍.................................... - 1 -

1.3.1 氯气处理目的................................... - 1 -

1.3.2 氯气处理工艺原理............................... - 2 -

1.3.3 氯气处理工艺的选择............................. - 2 -

1.4 建设规模和产品规格.................................. - 4 -

1.4.1 建设规模....................................... - 4 -

1.4.2 产品规格....................................... - 4 -第二章工艺流程............................................. - 6 -

2.1工艺流程概述......................................... - 6 -

2.2工艺流程说明......................................... - 7 -

2.2.1 冷却除沫部分................................... - 7 -

2.2.2 干燥部分....................................... - 8 -

2.2.3 压缩部分....................................... - 9 -第三章工艺计算............................................ - 10 -

3.1 物料衡算........................................... - 10 -

3.1.1洗涤塔至水雾捕集器前.......................... - 11 -

3.1.2钛列管冷却器.................................. - 13 -

3.1.3水雾捕集器.................................... - 14 -

3.1.4氯水箱........................................ - 15 -

3.1.5洗涤塔........................................ - 15 -

3.1.6干燥塔........................................ - 16 -

3.2 热量衡算........................................... - 18 -

3.2.1洗涤塔及氯水箱................................ - 18 -

3.3.2钛列管冷却器.................................. - 20 -

3.3.3一段干燥塔.................................... - 21 -

3.3.4二段干燥塔.................................... - 22 -第四章设备设计及选型..................................... - 24 -

4.1 一段干燥塔（填料吸收塔）........................... - 24 -