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本科生毕业设计

年产60万吨精对苯二甲酸（PTA）工段设计

摘 要

PTA是一种化工原料，从原油经过一系列工序提炼而出，主要用于制造涤纶等化工产品。

PTA是精对苯二甲酸（Pure Terephthalic Acid）的英文简称，在常温下是白色粉状晶体, 无毒、易燃，若与空气混合，在一定限度内遇火即燃烧。

PTA是重要的大宗有机原料之一，广泛用于与化学纤维、轻工、电子、建筑等国民经济的各个方面。同时，PTA的应用又比较集中，世界上90%以上的PTA用于生产聚对苯二甲酸乙二醇酯(简称聚酯，PET)。生产1吨PET需要0.85－0.86吨的PTA和0.33-0.34吨的MEG（乙二醇）。聚酯包括纤维切片、聚酯纤维、瓶用切片和薄膜切片。国内市场中，有75％的PTA用于生产聚酯纤维；20％用于生产瓶级聚酯，主要应用于各种饮料尤其是碳酸饮料的包装；5％用于膜级聚酯，主要应用于包装材料、胶片和磁带。可见，PTA的下游延伸产品主要是聚酯纤维。

关键词: 精对苯二甲酸 氧化单元 氢精制单元

I

Annual output of 600,000 tons of purified terephthalic acid (PTA)

Section of Design ABSTRACT

PTA is a chemical raw material, refined from crude oil out through a series of processes, mainly for the manufacture of polyester and other chemical products.

PTA is the PTA (Pure Terephthalic Acid) the title, and at room temperature is a white crystalline powder, non-toxic, flammable, if mixed with air, within certain limits in a fire that is burning.

PTA is an important staple of organic material, widely used for chemical fiber, light industry, electronics, construction and other aspects of the national economy. Meanwhile,

PTA application and relatively concentrated, more than 90% of the world's PTA for the production of polyethylene terephthalate (referred to as polyester, PET). Production of 1 ton of PET needs 0.85-0.86 tons of PTA and 0.33-0.34 ton MEG (glycol). Including fiber polyester chips, polyester fiber, bottles and films with slices slices. The domestic market, 75% of the PTA for the production of polyester fiber; 20% for the production of bottle grade PET, mainly used in a variety of drinks, especially carbonated beverages; 5% for film grade PET, the main application in packaging materials, film and tape. Visible, PTA is the downstream extension of polyester fiber products. Keywords: PTA Oxidation unit Hydrogen purification unit

II

目 录

摘 要 ..................................................... I ABSTRACT .................................................. II 1 绪论 .................................................... 1

1.1PTA的基本概述 ............................................... 1 1.2PTA市场供需分析 ............................................. 1 1.2.1生产能力和产量 ............................................ 1 1.2.2 PTA生产企业 .............................................. 2

III