Shanghai Daoqin Plastics Co., Ltd.

currently world PTA production injection molding parts processing using/adopting technology has 差异, nano 起, large can separation is below/following type: (1)精PTA process process using/adopting catalytic oxidation method will for 二甲苯（PX） oxidation formed coarse TA, again add hydrogen also method remove 杂质, will CTA精 made formed PTA. this type of process in PTA production in 居主导 位, table/sheet property production injection molding parts processing has: UK 石油（BP）, DuPont （Dupont）, Mitsui 油化（MPC）, chemical －因卡（Dow-INCA）, Mitsubishi chemical （MCC） and 因特奎萨（Interquisa） and other. （2） excellent polymerization grade for 苯二甲 acid （QTA, EPTA） process process using/adopting catalytic oxidation method will PX oxidation formed coarse TA, again use 进一步 deep degree oxidation methods will coarse TA精 made formed polymerization grade TA. process 路线 代 table/sheet production injection molding parts processing has Mitsubishi chemical （MCC）, 伊斯特曼（Eastman）, DuPont （Dupont）, Toray （Toray） and other. production can force 约占PTA总 production capacity 16％. types process 路线差异 in made methods different, product quality has 差异. types product 含杂质总 amount versus 当, 但杂质 types type 不一样. PTA product in 含PT acid relatively high （200ppm left right ）, 4－CBA relatively low （25ppm left right ）, 而QTA（ or EPTA） product in 含杂质 and PTA versus 反, 4－CBA relatively high （250ppm left right ）, PT acid relatively low （25ppm below/following ）. types process product applications basic same, used for polyester production, most product long short filament, bottle sheet/slice quality 差异不 large. currently, 钴-锰- bromine ternary composite/compounding system is PX oxidation most catalytic agent, its in is most 贵, therefore currently 该方面 一直进行 reduce oxidation catalytic agent can consumption research. PTA production process in use TA add hydrogen reaction catalytic agent is Pd/C, currently research main/primary issues is how to long catalytic agent use lifespan. 　　 industrial 化 精 for 苯二甲 acid made process very more, production process development, for 二甲苯 high temperature oxidation method formed is made for 苯二甲 acid most main/primary production process, this type of process in for 苯二甲 acid made process in has for advantages. for 二甲苯 high temperature oxidation process is in high temperature, high pressure lower 进行, reaction relatively more; but also due to temperature degree high, pressure large for equipment requirements high. therefore process main/primary in in reduce oxidation reaction temperature degree and reduce oxidation reaction pressure 两 方面. currently, has this patent technology company main/primary has USA Amoco company, UK ICI company and Japan Mitsui company, 我国曾 in meanwhile 期引进 this company patent technology. year, for 苯二甲 acid process very large 进展. 　　 　　（1） for 二甲苯(PX) high temperature oxidation method. for 二甲苯 high temperature oxidation method oxidation, made and system formed. process for 二甲苯 is raw materials, gas catalytic oxidation, add hydrogen made, crystallization separation and other made formed. catalytic oxidation is for 二甲苯 in catalytic agent in lower, 于190-230℃, pressure 1.27-2.45MPa conditions lower, use gas oxidation to coarse for 苯二甲 acid. add hydrogen made is will for 二甲苯 oxidation process in reaction full 4-羟基苯甲 aldehyde (4-BCA)转化 is can solvent water 甲基苯甲 acid, rear remove. add hydrogen made reaction need in relatively high pressure (约6.8MPa) and relatively high temperature degree （约280℃） conditions lower 进行. for 苯二甲 acid add hydrogen material again crystallization separation and drying, to can used for fiber production for 苯二甲 acid. for 二甲苯 high temperature oxidation method process/workflow simple, reaction speed, rate can 达90 above. 　　 　　（2） high temperature oxidation process 改进. Amoco company for high temperature oxidation method process 进行 改进, make oxidation reaction temperature degree drop 至193-200℃ scope/range, reaction pressure versus drop to 1.45MPa. rear 每吨PTA PX消 consumption amount decrease/reduce 14kg. Mitsui company in Amoco high temperature oxidation process upper, development Mitsui Amoco process. process improve/increase catalytic agent in 钴/锰 ratio and solvent agent ratio, meanwhile is maintain solvent agent concentrated degree stability, oxidation reaction device increase separation 离塔, remove reaction system in water. this type of process can will oxidation reaction temperature degree drop 至185-195℃, reaction pressure drop 至0.9-1.1MPa, versus reaction decrease/reduce, meanwhile liquid month-on-month versus improve/increase, catalytic agent can ring use, decrease/reduce catalytic agent use amount. 　　 　　（3） temperature and reaction conditions for 苯二甲 acid process. high temperature oxidation process need high temperature, high pressure, very more company development reaction conditions temperature and for 苯二甲 acid process, this process in comparison formed has Mitsubishi company development QTA process, Japan company development MTA process and company development SPTA process. 　　 　　MTA process add large catalytic agent 锰/钴 ratio, solvent agent ratio and oxidation gas use amount, oxidation rear product again 实行补充 oxidation, add a small amount of poly aldehyde, strong/high oxidation reaction equipment, make in material is most material. through separation oxidation make process need again add hydrogen also made. this type of process reaction conditions temperature and, reaction time relatively long, raw materials PX, catalytic agent and acid consumption relatively high, and product in for 羧基甲 aldehyde content relatively high, product can used for made fiber grade polyester. 　　　 　　QTA process using/adopting high active property catalytic agent for 二甲苯 oxidation. catalytic agent substitute/replace high temperature oxidation process in 锰, meanwhile add catalytic 荆, using/adopting machine bromine material. for 二甲苯 oxidation reaction conditions relatively temperature and, reaction process in also need for in product 进行补充 oxidation. process for 二甲苯, catalytic agent and solvent agent acid mono consumption high temperature oxidation process, can consumption reduce, and need add hydrogen, product can to fiber grade polyester made requirements. 　　 　　鲜京 company development SPTA process is for Eastman patent technology 改进, this type of process reaction temperature degree and pressure obvious low high temperature oxidation process conditions, oxidation reaction temperature degree is 163℃, pressure is 0.62MPa. oxidation reaction using/adopting catalytic agent, catalytic agent concentrated degree relatively high, ratio 达22, high high temperature oxidation process. oxidation reaction mixed combined material 仅需经 离心 separation 离, can 进入传统 add hydrogen made, must crystallization, drying and 储存, 随 继续通入空 gas reaction, 进一步 reduce product in for 羧基苯甲 aldehyde content, to for 苯二甲 acid product. 　　当今PTA technology development reduce investment, decrease/reduce material consumption can consumption, improve/increase product quality, most reinforcement competition force is core. obvious technology development trend is production series large type 化, process process/workflow 简化, plant/unit 布局紧凑, process as low temperature, low pressure, and strong/high environmental protection and other. most new technology is using/adopting use acid and acid and other catalytic agent and acid for 二甲苯 liquid versus gas oxidation method production technology, in reaction in generate water separation recycling system remove, acid and catalytic agent recycling, to reaction device. for 苯二甲 acid use separation made process remove reaction 二甲苯 and water separation high pure degree 化. separation PTA plant/unit will raw materials from PX切换 formed 间二甲苯, production 间苯二甲 acid, 即PTA plant/unit can 转换化. 2002 year 8 month, UK 诺坦格姆 large research group and DuPont polyester technology company development use ultra- 临界 water for 二甲苯 production for 苯二甲 acid production technology. 　　 another ICI company 发明 一 types new device, can will crystallization 闪蒸蒸汽喷射 to add hydrogen material in, improve/increase can amount utilizing rate, using/adopting this type of methods can provide add hydrogen material preheating 需 50 can amount. ICI also 提出 一 types 集 滤 and 洗涤于一体 new process, can 省 传统 process in pressure crystallization, separation 离, 二次打浆洗涤以 and most 终离心 separation and other 工序. most 近一篇 patent in for process 进行 简化, using/adopting mono 台 滤洗涤 equipment, equipment is more belt/tape 式 滤 machine, can meanwhile more 段洗涤. for/regarding drying process, ICI company patent in use belt/tape 式 滤 machine in water 洗涤置换出 coarse for 苯二甲 acid in acid, again will 滤饼直接 processing formed add hydrogen made use water versus material. 　　Amoco high temperature oxidation process is currently use most process. 近10 year, has generate new PTA production process technology, 但原由 process has large degree 改进, main/primary performance in: oxidation process parameters optimization, large separation Amoco patent in, acid and PX ratio using/adopting 2.3-3.5∶1, large separation ICI patent in, acid and PX ratio generally using/adopting 4∶1. due to formed 1摩尔 PTA会 meanwhile formed 2摩尔 water, therefore using/adopting high concentrated degree acid, can decrease/reduce reaction device in liquid versus mixed combined material in water concentrated degree increase. ICI发现 oxidation reaction device in liquid versus mixed combined material in water concentrated degree especially important, oxidation reaction device versus ratio liquid versus ratio liquid versus for equipment anti property can requirements high, already 鉴定出 this type of factors is due to versus in water separation content high formed, adjustment liquid versus in water concentrated degree in 4-8 scope/range inner, can use versus 不锈钢代替 titanium manufacturing oxidation device or its in parts. currently Amoco, ICI and other oxidation process parameters 均不完 full same, 且各自认 is oxidation parameters most 佳. currently production PET process technology in 处于主导 位 is PTA method production process. field/area process process/workflow already from 6釜 toward 3釜, 2釜 process/workflow 演进, increase large （600-900t/d）, new type polyester plant/unit ratio plant/unit cost 约底25, production cost low 40. 　　PTA由 for 二甲苯 in acid solvent agent in liquid versus oxidation made 取, using/adopting acid catalytic agent. oxidation reaction conditions large is: temperature degree 185-200℃, pressure 0.98-1.5MPa, in 立式罐 reaction device inner gas liquid versus reaction. BP and DuPont company has has technology, Mitsubishi chemical, 伊斯曼 chemical and Mitsui Chemicals company has competition property process. PTA production process can separation is type: type is will for 二甲苯(PX)经空 gas oxidation, made coarse for 苯二甲 acid (CTA), rear, will CTA精 made formed PTA, 亦称二步 method. type is 由PX oxidation reaction, can made PTA, 亦称一步 method. method and method main/primary difference in 于: method made PTA in, 杂质4-羧基苯甲 aldehyde (4-CBA) content in 25×10^-6 below/following, 而一步 method made PTA in, 4-CBA content is 200×10^-6-300×10^-6. rear also is in pure degree for 苯二甲 acid (MTA). 　　EPTA process 伊斯曼 chemical company EPTA process coarse for 苯二甲 acid (CTA) production, polymerization grade for 苯二甲 acid (EPTA) production and catalytic agent recycling separation formed. for 二甲苯 in acid solvent agent in use gas in liquid versus catalytic oxidation, material (for 二甲苯, solvent agent and catalytic agent) and pressure shrink gas mixed combined, 连续进入 in in temperature lower as 鼓泡塔式 oxidation reaction device, formed CTA use solvent agent recycling system solvent agent remove CTA in 杂质. CTA again in rear oxidation steps in pure is EPTA, large large decrease/reduce for 苯二甲 acid in main/primary 杂质——4-羧基苯甲 aldehyde (4-CBA), for -甲苯甲 acid (p-TA), EPTA from solvent agent in separation and drying. solid as is CTA残渣 separation and remove, in 流化床焚烧炉 in 处理. can solvent property from liquid in remove, solvent understanding catalytic agent used for ring. process processing steps relatively less, and and oxidation technology versus combined, investment and as use relatively low. in USA, 西欧, 亚太 区 already has industrial plant/unit, can force is 150万t/a. 鲁齐石油 and chemical company negative process technology let. deep combined development group (UDC) will in construction for 苯二甲 acid (PTA) and polyester combined plant/unit, 50万t/aPTA plant/unit will using/adopting 伊斯曼 chemical company EPTA technology. 　　BP company environmental protection type process BP company most development environmental protection type PTA production process, can make waste water and gas 体污染排放 decrease/reduce 3倍, solid waste material decrease/reduce semi, property has machine combined material (VOC)排放 basic remove. process used for 我国珠海 and Taiwan PTA plant/unit, and USA newly built 70万t/aPTA plant/unit in. 　　连续 method green process UK 诺丁汉(Nottingham) large and DuPont polyester technology company combined as, development in ultra- 临界 water (ScH2O) in from for 二甲苯 production for 苯二甲 acid method green process. for 二甲苯先 by oxygen separation oxidation, oxygen from oxidation hydrogen in preheating device in separation understanding generate, in ScH2O in and 400℃ lower, again use bromine 化锰进行 catalytic, can high rate to for 苯二甲 acid, selection property ultra- 90. and has process versus ratio, reaction can large large improve/increase can and decrease/reduce waste material. in for 二甲苯 in acid in oxidation production for 二甲苯 路线 in, water in reduce bromine catalytic agent active property. new process in ScH2O in reaction, is ultra- 临界流体 极 property low liquid water property, catalytic agent has large active. 　　扬子石化精 for 苯二甲 acid formed sleeve/set technology 我国由扬子石化, large 学, 华东理工 large 学共同承担 China 石化“十 strip/profile 龙”攻关 project 之一 扬子石化精 for 苯二甲 acid (PTA) formed sleeve/set technology development already relatively large 进展, more technology 填补 国 inner or to water 平. especially is formed sleeve/set process in PX oxidation main/primary technology indicators to 20世纪90 year 代末国 inner plant/unit technology water 平. TA精 made technology indicators and product quality to 国际先进 water 平. 转鼓式 true 空 滤 machine Domestic research, small amount high temperature high pressure high speed 离心泵 research, PTA精 made production China 产化转鼓式 true 空 滤 machine 空白. PTA add hydrogen made process reaction research project plant/unit full process/workflow. add hydrogen rear material material in 4-CBA content excellent 于国家 standards. meanwhile, 扬子石化独立 development inner sleeve/set 连续式PTA add hydrogen made process plant/unit, already experiment/testing research. this technology will in 扬子石化 new 一轮PTA plant/unit renovation in application. 　　CTP-Ⅱ钯 carbon catalytic agent China 石油辽 cationic company polyester injection molding parts processing year 产28万tPTA production plant/unit application table/sheet 明, Shanghai 石化科技 development company production CTP-Ⅱ钯 carbon catalytic agent add hydrogen made can force already to 3万倍, this table/sheet catalytic agent already to currently 国际先进 water 平. CTP-Ⅱ钯 carbon catalytic agent 于2001 year 5 month 31 day in company polyester injection molding parts processing to industrial application, catalytic agent add hydrogen can force is 2万t/t, through 精心操 as, tube/pipe 理, catalytic agent 平稳运行至今, add hydrogen can force to 3万t/t, from 而进入 currently 国际先进 water 平行列. 1.6富 oxygen oxidation outer company year development oxygen oxidation PTA production technology, through in material gas in add pure oxygen, improve/increase mixed combined gas in oxygen content, from to improve/increase PTA output/production volume 目. Shanghai company utilizing production nitrogen gas process in has a large amount of has utilizing oxygen gas, in PTA plant/unit experiment/testing formed oxygen oxidation technology. expected in 40万t/aPTA capacity expansion renovation in, use upper oxygen oxidation process technology, can is plant/unit capacity expansion investment 近 100 million yuan. 1.7MPB5 type 钯- carbon catalytic agent MPB5 type 钯- carbon is types high technology content, price catalytic agent, it main/primary use in PTA made production in. generally lower catalytic agent design lifespan is production 3万tPTA, and outer 4万t above PTA/t catalytic agent water versus ratio, catalytic agent use also has small 差距, is its 60 left right. meanwhile, more catalytic agent use relatively high. more 换10.5t catalytic agent consumption 资1400 10,000 yuan above. company chemical industry injection molding parts processing design catalytic agent use new process, independent development types long 钯- carbon catalytic agent lifespan process technology, in catalytic agent can can in 毒 早期就进行处理, using/adopting has technology catalytic agent active property, long its use lifespan, lower MPB5 type 钯- carbon catalytic agent use lifespan full most long 纪录. from 2002 year 9 month more new catalytic agent use process 以, already 连续满 negative 荷运转14 month, reduce catalytic agent use cost 560 10,000 yuan, use lifespan to 4.1万t/t, ultra- 国 inner outer water 平, already to Japan and other 国 先进 water 平.