年产7万吨邻苯二甲酸二辛酯(DOP)生产车间初步工艺设计

题 目：年产7万吨邻苯二甲酸二辛酯（DOP）

生产车间初步工艺设计

摘要

邻苯二甲酸二辛酯,简称DOP。分 子 式：C24H38O4 是重要的通用型增塑剂，是目前国内外用量最大的增塑剂之一，广泛用于橡胶、塑料和医药工业用途广泛，在国民经济中占有十分重要的地位。经过分析比较各种生产原料、合成工艺后，本设计工艺流程是采用串联多釜反应器连续酯化技术，催化剂是采用氧化铝与辛酸亚锡以1：1比例复配催化剂年产8万吨邻苯二甲酸二辛酯，以满足国内需求。

本设计遵循“技术成熟，工艺先进、设备配置科学、环保安全、经济效益”等原则，在比较国内外各种先进生产方法、工艺流程和设备配置基础上，选用是从苯酐和异辛醇出发经过酯化反应、脱醇、精制得到产品的工艺路线生产邻苯二甲酸二辛酯。设计的重点是生产工艺设计论证、工艺计算及设备设计选型，附有带控制点的工艺流程图，主要生产设备结构尺寸图，生产车间的设备配置图。最后部分考虑环境保护和劳动安全，以达到减少“三废”排放，加强“三废”治理，确保安全生产，消除并尽可能减少工厂生产对职工的伤害。

关键词：DOP 异辛醇 苯酐 工艺设计 工艺计算 设备选型

Abstract

Dioctyl phthalate ,referred to as DOP, Molecular Formula:

C24H38O4 .It is important to general-purpose plasticizer and has become the largest amount used of plasticizerthe at home and abroad, now it is widely used in rubber, plastics and pharmaceutical industry, plays an important role in the national economy. After analysis and comparison of various raw materials, synthesis, the design process is the use of multi-tank reactors in series continuous esterification technology, the catalyst is alumina with a 1:1 ratio of Sn catalyst compound annual output of 100,000 tons Dioctyl phthalate, to meet domestic demand.

The design follows the \technology, advanced technology, equipment configuration scientific, environmental safety, economic efficiency,\the principle of reciprocity. After comparing domestic and foreign advanced production methods, process and equipment configuration , the choices are starting from phthalic anhydride and iso-octanol after esterification, de alcohol, refined by product line production process octyl phthalate. Design for production process design argument, the design of facilities and process selection, with a flow chart with control points, the main production equipment and size chart, workshop equipment configuration diagram. The last part is about

environmental protection and labor safety, in order to achieve reduction of the \wastes\Key word: DOP Ethylhexanol Phthalic Process Design Process Calculation Equipment Selection

目录

一．总论 ...................................................... 7

1．概述 .................................................... 7

1.1增塑剂DOP的性质 .................................... 7 1.2产品用途 ............................................ 7 1.3DOP在国民经济中的重要性 ............................ 7 1.4 DOP的市场需求 ...................................... 8 2．设计的目的和意义 ........................................ 8 3．设计依据和原则 .......................................... 8

3.1设计依据 ............................................ 8 3.2设计原则 ............................................ 8 4．设计范围 ................................................ 9 5．DOP生产能力及产品质量标准 .............................. 9 5.1生产能力 ............................................ 9 5.2产品质量标准 ........................................ 9 二．生产工艺流程设计与论证 ?????????????????10 1．生产工艺选择与论证??????????????????10 2．工艺参数的确定 ????????????????????11

2.1酯化工序 ..........................................11 2.2中和、洗涤工序 ....................................11

2.3脱醇工序 ..........................................12 2.4干燥、过滤工序 ....................................12 3．产工艺流程图及其说明 ?????????????????13 3.1 DOP生产工艺流程图 ????????????????13

3.2 生产工艺流程说明?????????????????13

三．工艺计算???????????????????????????14

1.物料衡算??????????????????????????14 1.1设计生产能力 ??????????????????????14 1.2二级酯化段釜1物料计算????????????????? 15 1.3酯化工段物料衡结果 ???????????????????16 2．热量衡算 ?????????????????????????17 四．主要设备设计与选型??????????????????????18 1．反应釜的设计与选型?????????????????????19 1.1反应釜体积确定 ?????????????????????19 1.2反应釜高度与底面直径 ??????????????????20 1.3反应釜温度与压力 ????????????????????20 1.4反应釜壁厚度计算 ????????????????????21 1.5搅拌器的设计及选型 ???????????????????22 1.5.1搅拌器型式适用条件表 ???????????????23 1.5.2 搅拌器的选用及尺寸 ????????????????23 1.5.3搅拌功率的计算 ??????????????????23 1.6夹套传热面积的计算与核算 ????????????????23 1.6.1 被搅拌液体侧的对流传热系数 ????????????23 1.6.2夹套冷却水对流传热系数 ??????????????24 1.6.3夹套传热面积????????????????????25 1.7 反应釜的主要技术特性汇总 ????????????????26 2．冷凝器的设计与选型 ?????????????????????27