Modeling of Distillation Processes

Kenig, Eugeny Y.; Blagov, S.

doi:10.1016/b978-0-12-386547-2.00010-7

Cited by 12 publications

(3 citation statements)

References 104 publications

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“…Industri yang bergerak dibidang pengolahan minyak mentah mempunyai proses bisnis dalam hal pengolahan bahan bakar salah satunya dalam pengolahan LPG [1]. Untuk mendapatkan kualitas LPG yang baik dibutuhkan Kolom Deethanizer untuk memisahkan Ethana (C 2 H 6 ) yang masih terkandung di dalam produk propana (C 3 H 8 ) dan butana (C 4 H 10 ) [2].…”

Section: Pendahuluanunclassified

Evaluasi Neraca Massa Kolom Deethanizer di Unit Gas Plant

Nurrahman¹,

Furqon²

2021

Reka Buana

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Gas Plant Unit in company X engaged in energy in Balikpapan has a design capacity of 560 tons/day. This unit serves to produce propane gas (C3H8) and butane (C4H10) to become LPG products. The Deethanizer column is a Light End fractionation unit that separates Ethane compounds from Propane and Butane at operating temperature resulting in LPG products that meet the specifications. The researcher's goal is to obtain the actual mass balance calculation and the flow rate of the process—the method used from retrieving data on operating conditions directly to the industry and performing calculations. The Deetanizer column is composed of 40 sieve trays, the entry feed of the 20th tray operates at the mass flow rate of the Deethanizer column feed of 5949,184 kg/hour, the flow rate of LPG products is 3428,334 kg/hour, and the mass flow rate of gas overhead is 150,186 kg/hour so that there is an actual % loss of 39,84%, this is because this unit should be time to be repaired. However, this does not affect the products produced, which can be seen from laboratory tests on LPG product samples.ABSTRAKGas Plant Unit diperusahaan X yang bergerak dibidang energi di Balikpapan mempunyai kapasitas desain 560 ton/hari. Unit ini berfungsi untuk memproduksi gas propane (C3H8) dan butana (C4H10) sehingga menjadi produk LPG. Kolom Deethanizer adalah unit fraksinasi Light Ends yang berfungsi untuk memisahkan senyawa Ethana dari Propana dan Butana dengan proses destilasi bertekananan sehingga menghasilkan produk LPG yang memenuhi spesifikasi. Tujuan peneliti untuk mendapatkan perhitungan neraca massa aktual serta laju alir proses. Metode yang digunakan dari pengambilan data kondisi operasi langsung ke industri serta melakukan perhitungan. Kolom Deetanizer tersusun dari 40 buah sieve tray, umpan masuk dari tray ke-20, beroperasi pada laju alir massa umpan kolom Deethanizer sebesar 5949,184 kg/jam, laju alir produk LPG sebesar 3428,334 kg/jam dan laju alir massa overhead gas sebesar 150,186 kg/jam sehingga diperoleh % yield aktual 57.62 dan % losses aktual sebesar 39,84%, hal ini disebabkan karena unit ini seharusnya sudah waktunya untuk di perbaiki. Namun hal ini tidak berpengaruh terhadap produk yang dihasilkan, hal ini dapat dilihat dari hasil uji Laboratorium mengenai Sampel Produk LPG.

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Section: Pendahuluanunclassified

Evaluasi Neraca Massa Kolom Deethanizer di Unit Gas Plant

Nurrahman¹,

Furqon²

2021

Reka Buana

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“…Most mass transfer processes occurring in nature and in technical applications involve liquid solutions with more than three components. Rate-based methods employed for modeling, design and control of separation unit operations in chemical engineering, such as distillation, rely on mass and energy transfer models which require reliable information on diffusion coefficient data for the regarded mixtures [39]. Therefore, there is a significant interest in the improvement of experimental methodologies and the development of reliable methods for the prediction of mutual diffusion coefficients of liquid multicomponent mixtures.…”

Section: Diffusion In Quaternary Liquid Mixturesmentioning

confidence: 99%

Molecular Modeling and Simulation: Model Development, Thermodynamic Properties, Scaling Behavior and Data Management

Heinen

Chatwell

Homes

et al. 2021

High Performance Computing in Science and Engineering '20

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We are outlining our most recent findings, covering: 1) A comparison of a micro-and macroscopic solution of a two-phase Riemann problem obtained from molecular dynamics simulations and finite volume schemes; 2) A novel equation of state for the bulk viscosity of liquid noble gases based on a multi-mode relaxation ansatz; 3) A detailed analysis of the evaporation process of simple fluids; 4) Diffusion coefficients of quaternary liquid mixtures obtained by the Green-Kubo formalism; 5) An analysis of the solid/fluid phase transition for the face centered cubic (fcc) lattice; 6) The relative permittivity of mixtures of water and acetone; 7) An assessment of the reliability and reproducibility of molecular simulation results; 8) Techniques for the data management in simulation workflows, including annotations of simulation outcomes with appropriate metadata standardized by an ontology.

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“…Almost all separation processes in chemical engineering, such as distillation, absorption, or extraction, are affected by multicomponent diffusion in liquids. Rate-based methods employed for modeling, design, and control of these unit operations involve mass and energy transfer models, which require diffusion coefficient data for mixtures …”

Section: Introductionmentioning

confidence: 99%

Fick Diffusion Coefficient Matrix of a Quaternary Liquid Mixture by Molecular Dynamics

2020

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For the first time, the Fick diffusion coefficient matrix of a quaternary liquid mixture is sampled consistently by means of molecular dynamics simulation. The required phenomenological diffusion coefficient and thermodynamic factor matrices of the mixture water + methanol + ethanol + 2-propanol are determined following the Green–Kubo formalism and Kirkwood–Buff theory. Further, a system size correction methodology for the Fick diffusion coefficient of multicomponent mixtures is proposed. Ten compositions are studied under ambient conditions and validated by analyzing the ternary limits of the quaternary Fick diffusion matrix. Because of complex intermolecular interactions due to the presence of hydrogen bonding, the elements of the Fick diffusion coefficient matrix exhibit a significant composition dependence. The magnitude of several cross coefficients indicates important coupling effects mainly affecting the diffusive flux of water. These effects are explained in the light of the structural information given by the radial distribution functions of the mixture. This work that solely rests on molecular dynamics simulation techniques to predict the Fick diffusion coefficient matrix of quaternary mixtures is expected to be a significant step forward for the understanding of multicomponent diffusion.

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Modeling of Distillation Processes

Cited by 12 publications

References 104 publications

Evaluasi Neraca Massa Kolom Deethanizer di Unit Gas Plant

Evaluasi Neraca Massa Kolom Deethanizer di Unit Gas Plant

Molecular Modeling and Simulation: Model Development, Thermodynamic Properties, Scaling Behavior and Data Management

Fick Diffusion Coefficient Matrix of a Quaternary Liquid Mixture by Molecular Dynamics

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