Pre-design of Biphenyl Chemical Factory from Benzene with Capacity of 10.000 Ton Per Year

Roman Robiati
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Abstract

The design of a biphenyl chemical plant from benzene with a capacity of 10,000 tons/year will be built in Tuban, East Java with a land area of ​​10,010 m2. The raw material in the form of Benzene is obtained from Trans-Pacific Petrochemical Indotama (TPPI), Tuban. The factory is designed to operate continuously for 330 days, 24 hours per day, and requires 214 employees. Biphenyl preparation begins with reacting benzene (2,807.74 kg/hour) in a Pipe Flow Reactor (R-01) at a reactor temperature of 377 oC and a pressure of 2 atm. This reaction takes place with a conversion of 90% and is endothermic so that a Hitech heater is used to maintain the operating temperature. The products that come out of the reactor are biphenyl and hydrogen. It is then cooled and condensed in a Partial Condenser (CD-01) to a temperature of 151 oC. Then enter into Separator-02 (SP-02) to separate hydrogen from a mixture of benzene, toluene and biphenyl. Hydrogen in the gas phase as a result of the separtor. The bottom product in the form of benzene, toluene and biphenyl in the liquid phase is pumped and put into a distillation tower (MD-01) to purify the product with the bottom product in the form of biphenyl with a purity of 99.3%. The result of the distillation tower is benzene and its impurities are recycled as feed into the reactor with a temperature of 83 oC and a pressure of 1 atm. This factory requires Fixed Capital (FC) Rp. 34,341,856,338,- + US$ 4,195,836, Working Capital (WC) (Rp. 127,536,505,173,- + US$ 170,019), Manufacturing Cost (MC) (Rp. 254,092,040,390,- + US$ 816,090), and General Expenses (GE) (Rp. 33,990,417,539,- + US$ 81,609). Economic analysis shows the value of ROI before tax is 50.38 % and the value of ROI after tax is 32.75%. POT before tax is 1.65 years and POT after tax is 2.34 years. The BEP value is 43.11% and the SDP value is 23.75%. The interest rate in DCF for 10 years is 19% on average. Thus, from a technical and economic point of view, a biphenyl plant from benzene with a capacity of 10,000 tons/year is worthy of consideration.
年产1万吨苯联苯化工厂的前期设计
设计在东爪哇省图班市建设一座年产1万吨苯联苯化工厂,占地面积10010平方米。苯形式的原料来自土耳其的跨太平洋石化公司(TPPI)。工厂设计为每天24小时连续运行330天,需要214名员工。联苯的制备首先在管流式反应器(R-01)中反应苯(2,807.74 kg/小时),反应器温度为377℃,压力为2atm。该反应的转化率为90%,并且是吸热的,因此使用Hitech加热器来保持操作温度。从反应器中出来的产物是联苯和氢。然后在部分冷凝器(CD-01)中冷却和冷凝到151℃的温度。然后进入分离器-02 (SP-02),从苯、甲苯和联苯的混合物中分离氢气。氢气在气相中作为分离器的结果。将液相中苯、甲苯、联苯形式的底产物泵入精馏塔(MD-01),用纯度为99.3%的联苯形式的底产物提纯产物。精馏塔的结果是苯及其杂质被回收作为进料进入温度为83℃,压力为1atm的反应器。这家工厂需要固定资本(FC) Rp. 34,341,856,338,- + US$ 4,195,836,营运资金(WC) (Rp. 127,536,505,173,- + US$ 170,019),制造成本(MC) (Rp. 254,092,040,390,- + US$ 816,090),以及一般费用(GE) (Rp. 33,990,417,539,- + US$ 81,609)。经济分析表明,税前投资回报率为50.38%,税后投资回报率为32.75%。税前POT为1.65年,税后POT为2.34年。BEP值为43.11%,SDP值为23.75%。10年期DCF的平均利率为19%。因此,从技术和经济的角度来看,建设年产1万吨苯联苯装置是值得考虑的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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