聚丙烯工艺描述模板.doc
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1、UNIPOL PP Process DescriptionUNIPOL PP工艺过程描述1Description of the Contract Plant 协议工厂描述2UNIPOL PP Process Unit UNIPOL聚丙烯工艺装置3Auxiliary Process Facilities 辅助工艺装置UNIPOL PP PROCESS DESCRIPTIONUNIPOL PP工艺过程描述1 Description of the Contract Plant 协议工厂描述The Contract Plant consists of a polypropylene process u
2、nit designed to produce 400 KTA of pelleted polypropylene from propylene based on UNIPOL PP Technology licensed by Union Carbide Chemicals & Plastics Technology LLC, a subsidiary of The Dow Chemical Company. The UNIPOL PP Process is a low-pressure gas-phase fluidized bed process for the manufacture
3、of PP resins.协议工厂包含一套基于UNIPOL PP 技术生产40万吨/年聚丙烯工艺装置,该技术转让自陶氏化学企业下属联合碳化物(联碳)化学和塑料技术企业。 UNIPOL PP 工艺技术是一项用于生产聚丙烯树脂低压气相流化床工艺。In addition to the UNIPOL PP Process, resin handling and blending facilities are also included in the Contract Plant battery limits. Other auxiliary facilities include utility dis
4、tribution, flare and plant infrastructure systems. The PDP provides adequate information to allow these systems to be easily designed by the Engineering Contractor, resulting in savings to the Licensee. The product bagging area is outside the Contract Plant battery limits and will be designed by the
5、 Licensee. 在UNIPOL PP 工艺之外,树脂处理和掺混也包含在本协议工厂范围之内. 其它辅助工艺设施包含公用工程分配,火炬,工厂基础设施。工艺包提供了足够信息使工程承包商能很轻易设计这些系统,从而使专利受让方节省投资. 产品包装区域是在协议工厂之外,由该技术买方设计。2UNIPOL PP Process Unit UNIPOL聚丙烯工艺装置The UNIPOL PP plant ISBL is comprised of the following process areas. UNIPOL聚丙烯工厂界区由下列工艺单元组成:A.Raw Material Supply and Pur
6、ification 原料供给和精制B.Propylene Purification丙烯精制C.Reaction聚合反应D.Resin Degassing树脂脱气E.Vent Recovery尾气回收F.Resin Additive Handling添加剂加入G.Pelleting造粒Each is described in detail in the following sections. No catalyst preparation is necessary SHAC catalyst is delivered to the plant ready to use. No gas/solid
7、 separation is needed due to the unique design of the reactor and product discharge system. The process units listed above are included in the Licensors Process Design Package (PDP). 每一单元全部将在下面章节具体描述催化剂制备是不需要,因为卖方会将直接可用SHAC催化剂运到工厂。因为特殊反应器和产品下料系统设计,也无需单独气固分离装置以上所列工艺装置全部包含在专利商工艺设计包(PDP)中A.Raw Material
8、 Supply and Purification (Part 1) 原料供给及精制(第1部分)Ethylene, nitrogen, and hydrogen are delivered to the battery limits by pipeline. Co-catalyst, T2, is received from vendor shipping containers with these shipping containers stored in the ISBL area.乙烯,氮气和氢气经过管线送至界区边界。助催化剂三乙基铝则来自储存在界区内厂商运输过来储罐。Ethylene f
9、rom Battery Limits is compressed to 635 psig in the Ethylene Compressor (K-1003) and heated to 100C in the Ethylene Preheater (E-1006) before passing through the CO Removal Vessel (C-1008). The ethylene is then cooled down to 40C in the Ethylene After-Cooler (E-1010) before being fed to the Ethylene
10、 Dryer (C-1012) for removal of water, miscellaneous polar compounds and carbon dioxide. Finally, ethylene is passed through the Ethylene Filter (Y-1002) to remove particulate contamination before it is sent to the reaction area.从界区外来乙烯先经过乙烯压缩机(K-1003)压缩至635 psig,然后经过乙烯预热器(E-1006)加热至100C,再进入脱一氧化碳床(C-
11、1008)。然后乙烯经过乙烯后冷却器(E-1010)冷却至40C, 再经过乙烯干燥器(C-1012)以除去水、多种极性成份和二氧化碳。最终,乙烯再经乙烯过滤器(Y-1002),去掉颗粒杂质,以后才被送至反应系统。Nitrogen is received from the boundary limits and the flow is split between different end users. Nitrogen not requiring purification is passed through a Filter (Y-1101) before being sent to the
12、process. Purification bed regeneration nitrogen is fed directly to the N2 Regeneration Heater (E-2114) without purification or filtration. Nitrogen for both Purified and High Pressure Purified end uses is passed through the Nitrogen Dryer (C-1112) to remove water. From the Dryer outlet, Nitrogen pas
13、ses through the Nitrogen Filter (Y-1115) to remove particulate contamination. A portion of this filtered nitrogen is fed to a small booster Compressor (K1102) which is used to increase the pressure of the nitrogen to its normal operating pressure of about 660 psig (4,551 kPag) for feed to the PP rea
14、ction system. High pressure nitrogen is passed through a Filter (Y1116) to remove particulate contamination prior to being fed to the process. 由界区外来氮气分流至不一样最终用户。不需要精制氮气,只需在送至工艺区之前经过过滤器(Y-1101)。 精制床再生氮气不需要经过精制或过滤就可直接送到氮气再生加热器(E-2114)。 需要精制氮气和高压精制氮气会经过氮气干燥床(C-1112)去除水。从干燥床出来氮气经过氮气过滤器(Y-1115)去除颗粒杂质。 这股
15、过滤氮气一部分会进入一个小压缩机(K-1102), 升高氮气压力至进入聚丙烯反应系统正常操作压力 660 psig (4,551 kPag)。 高压但其在进入工艺系统之前经过一个过滤器(Y-1116)去除颗粒杂质。 Hydrogen from the boundary limits is passed through the Methanator Heater (E-1204) which increases the Hydrogen temperature to between 100C and 150C. At that temperature, the Hydrogen enters t
16、he Methanator (C-1205) for the removal of carbon dioxide and carbon monoxide. The catalyst contained in the Methanator converts the CO and CO2 to Methane and Water. Methane is an inert in UNIPOL Reactor. The Hydrogen leaving the Methanator is cooled in the Methanator Aftercooler (E1206). From the Af
17、tercooler, Hydrogen passes through the Hydrogen Dryer (C-1207) for the removal of both the water contained in the incoming Hydrogen and that formed through the Methanation reaction. The hydrogen then passes through the Hydrogen Filter (Y-1211) to remove particulate contaminants before it is sent to
18、the reaction system. 来自界区氢气经过甲烷化预热器(E-1204)将氢气温度升至100C至150C之间。 在此温度下,氢气进入甲烷转化器(C-1205)去除二氧化碳和一氧化碳。在甲烷转化起中催化器将一氧化碳和二氧化碳转化成甲烷和水。 甲烷在UNIPOL反应器中是一个惰性气体。离开甲烷转化器氢气在甲烷化后冷却器(E-1206)中进行冷却,然后氢气经过氢气干燥器(C-1207)去除进料氢气中所含水和在甲烷化反应中生成水。 脱水后氢气然后经过氢气过滤器(Y-1211)除去颗粒杂质, 然后进入反应系统。 Liquid T2 is fed under nitrogen pressur
19、e from its respective shipping containers to the liquid full T2 Feed Pot (C-1505). The feed pot has a two hour hold time and is equipped with level indication to indicate when T2 container change out is required. From the T2 feed Pot the liquid T2 flows to the Alkyl charge pumps (G-1503/G-1504). The
20、 pumps build pressure to roughly 3.9 MPag for feeding the H/R Reactors and 3.1 MPag for feeding the Impact Reactor. All vents from the system are routed to seal pot (C-1502) equipped to trap emissions for later disposal. 液态三乙基铝在氮气压力下从其运输罐进入烷基铝进料罐(C-1505)。该进料罐有两小时保持时间并装有料位计方便了解何时容器排空。三乙基铝从进料罐进入烷基铝送料泵
21、(G-1503/G-1504)。送料泵将压力增至3.9 MPa(表压)以进入抗冲共聚反应器,增至3.1 MPa(表压)以进入均聚和无规共聚反应器。系统中排放物全部搜集在密封罐(C-1502)中,等候未来深入处理。A mineral oil system consisting of a drum pump (G-1514) and blow tank (C-1512) is provided for flushing elements of the Alkyl system prior to maintenance. Waste mineral oil/Alkyl is collected in
22、 the Seal Pot (C-1502). Periodically, the Seal Pot is drained and recharged with fresh mineral oil. The drained mineral oil/Alkyl mixture is transferred to disposal tanks for offsite disposal. 在进行维修之前,会使用一个由回转泵(G-1514)和矿物油卸料罐(C-1512)组成矿物油系统来冲洗烷基铝系统。废矿物油/三乙基铝搜集在密封罐(C-1502)中,密封罐定时排放并重新注入新鲜矿物油。 排放废矿物油/
23、三乙基铝混合物将转移四处理罐送到界区外处理。B.Propylene Purification (Part 2) 丙烯精制(第2部分)Facilities are provided to purify and pump propylene to the Reactor. Trace amounts of catalyst poisons, such as water, oxygen, carbon dioxide, carbon monoxide, alcohols, and ketones are reduced to acceptable levels in the Purification
24、 System. 这部分包含精制液态丙烯和将丙烯泵入反应器设施。微量反应毒物比如水,氧,二氧化碳,一氧化碳,乙醇和酮等在精制系统内被减至聚合反应能够接收水平。Liquid propylene from the battery limits feeds directly into the Propylene Degassing Column (C). The column is equipped with a water-cooled Condenser (E) and a steam-heated Reboiler (E). Cooling water pressure for the Con
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