Gas petroleum ringan (LPG) merupakan produk ringan penyulingan atmosfera minyak galian yang digunakan untuk pelbagai aplikasi di seluruh dunia. Selaras dengan pembangunan perisian simulasi Aspen Plus dan Design Expert, kajian mensimulasikan dan mengoptimumkan proses tertentu untuk menghasilkan produk akhir seperti yang diinginkan mampu dilaksanakan. Dalam kajian ini, Aspen Plus digunakan untuk tujuan simulasi dan Design Expert untuk tujuan mengoptimumkan proses penyulingan atmosfera, menghasil LPG pada kadar maksimum oleh kerana pasaran pesat LPG di mata dunia. Simulasi penyulingan atmosfera dilakukan menggunakan radas PETROFRAC, dengan ciri minyak mentah dokumen 53016. Analisis simulasi menunjukkan bahawa tiga pembolehubah manupulasi terpilih: suhu relau, bilangan peringkat dan nisbah wap dan suapan minyak pada aliran masuk radas mempunyai pengaruh yang tinggi terhadap penghasilan LPG. Perolehan LPG didapati berkurang dengan suhu relau yang semakin meningkat dan bilangan peringkat turus penyulingan serta nisbah pula, meningkat hasil LPG sehingga kuantiti maksimum sebelum menurun secara mendadak. Kajian menunjukkan hasil LPG maksimum 5.177%, lebih tinggi daripada industri, 2.9% secara purata dan kadar aliran tertinggi, 26.2 kg/s LPG dihasilkan pada suapan 507 kg/s minyak galian. Hasil LPG maksimum diperoleh pada faktor optima : suhu relau 603.15 K, bilangan peringkat turus 33 tingkat dan nisbah wap ke suapan 1.90%.
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Light petroleum gas (LPG) is a product of extruded oil ADU. LPG stands from refinery hydrocarbon gases such as methane, ethane, propane, butane and their existing isomers, used for various application worldwide. With the development of simulating software such as Aspen Plus and Design Expert, it is possible to simulate and optimize a specified process with desired end-product characteristics prior to plant running. As the LPG demand market grows tremendously worldwide, it is of utmost importance for LPG demand to be met. In this work, Aspen Plus is used to simulate and Design Expert is used to optimize an atmospheric distiller processing extruded crude into LPG and many more products. Simulation of the atmospheric distillation was done using a PETROFRAC distiller, crude assay 53016 beside operating parameters and inlet streams’ properties. Sensitivity analysis on the same PETROFRAC distiller model shows that three chosen operating parameters : furnace temperature, number of stages and ADU steam to feed ratio had significant effects on LPG yield. The LPG yield is found to be decreasing with increasing furnace temperature, number of stages and steam to feed ratio after a maximum value. The optimization study conducted in Design Expert software resulted in maximum LPG yield of 5.177% and throughput of 26.2 kg/s LPG for simulation model fed with 507 kg/s of crude at optimum process conditions : 603.15K furnace temperature, 33 number of stages and 1.90% of steam to feed ratio. The optimized yield, 5.177% achieved was higher than common LPG yield in industry which is 2.9%.
Maximizing light petroleum gases (lpg) yield from atmospheric distiller of crude oil distillation using response surface methodology / Vinodini Kandasamy