WOA with adaptive mutation operator to estimate parameters of heavy oil thermal cracking model

2019 ◽  
Author(s):  
Shuyue Zhang ◽  
Ning Wang
Keyword(s):  
Heavy Oil ◽  
Thermal Cracking ◽  
Adaptive Mutation ◽  
Mutation Operator

scholarly journals Studies on the Production of Gasoline from Heavy oil (furnace oil) by Thermal Cracking

1970 ◽  
Vol 44 (4) ◽  
pp. 473-478 ◽  
Author(s):  
MS Jamal ◽  
Mohammad Ismail ◽  
M Yunnus Miah ◽  
M Naimul Haque ◽  
Sujit Kumar Banik
Keyword(s):  
Heavy Oil ◽  
Thermo Gravimetric Analysis ◽  
Thermal Cracking ◽  
Light Petroleum ◽  
Petroleum Fraction ◽  
Fuel Oil ◽  
Molar Ratio ◽  
Gravimetric Analysis ◽  
Heavy Fuel Oil ◽  
Thermo Gravimetric

Heavy fuel oil (furnace oil) was thermally cracked by thermal cracker under different parametric conditions such as cracking temperature, molar ratio of heavy oil to diesel and cracking time to optimize the yield of the final product. In this thermal cracking process, the yield was gradually increased with the increase in temperature and time. After a certain temperature and time no significant increase in yield was observed. Thermo gravimetric analysis (TGA) was done to observe the percentage of weight loss with increasing temperature. The obtained cracked oil was fractionated by atmospheric vacuum distillation unit. Products obtained from different experiments under different conditions showed almost similar physico-chemical properties. Optimization was done on the basis of yield (%wt). The optimum yield (56.2%) of light petroleum fraction (gasoline) was obtained under the following experimental conditions: cracking temperature: 445°C; molar ratio of furnace oil to diesel 95:05; and cracking time: 30 min. The properties such as density, water content, ash content, pour point, flash point, viscosity, range of boiling point, sulphur content, carbon residue, octane number etc. of the obtained light petroleum fraction were found almost similar to that of the commercial grade gasoline. Key words: Furnace oil; Thermal cracking; Gasoline; Thermo gravimetric analysis. DOI: 10.3329/bjsir.v44i4.4601 Bangladesh J. Sci. Ind. Res. 44(4), 473-478, 2009

The Study of Molecular Modeling for Heavy Oil Thermal Cracking

2007 ◽  
Vol 30 (9) ◽  
pp. 1166-1175 ◽  
Author(s):  
L. Yan ◽  
X.-P. Zhang ◽  
S.-J. Zhang
Keyword(s):  
Molecular Modeling ◽  
Heavy Oil ◽  
Thermal Cracking

MUTATING REAL-VALUED VECTORS USING ANGULAR DISPLACEMENT

2003 ◽  
Vol 12 (04) ◽  
pp. 509-526
Author(s):  
MICHAEL A. ZMUDA ◽  
MATEEN M. RIZKI ◽  
LOUIS A. TAMBURINO
Keyword(s):  
Random Vector ◽  
Control Parameter ◽  
Angular Displacement ◽  
Adaptive Mutation ◽  
Single Mutation ◽  
Mutation Operator ◽  
Solution Vector ◽  
Vector Component ◽  
Extra Parameter

A new self-adaptive mutation operator, Angular Displacement, for optimizing real-valued vectors is presented. This is designed for applications, called directional problems, where the quality of a solution vector is based exclusively on the direction of the vector and not the length of the vector. Angular Displacement maintains one control parameter that stochastically governs the amount of angular displacement, θ, induced by a single mutation. After θ is chosen, a random vector is selected that forms an angle of θ radians with the input vector. This approach contrasts the standard mutation operator that maintains one extra parameter for each vector component to control the displacement of the vector's head. Experiments show Angular Displacement is superior to the standard mutation operator in a directional problem involving the optimization of a hyperplane's parameters.

scholarly journals Sponge iron production using petroleum coke by-produced in heavy oil thermal cracking.

FLOTATION ◽  
1984 ◽  
Vol 31 (4) ◽  
pp. 236-246
Author(s):  
Ryo WATANABE ◽  
Yoshifumi SHINOHARA ◽  
Takehiko ASHIE ◽  
Mamoru ONODA ◽  
Kenji MORI
Keyword(s):  
Petroleum Coke ◽  
Heavy Oil ◽  
Thermal Cracking ◽  
Sponge Iron ◽  
Iron Production

scholarly journals Reactive Transport and Its Implications on Heavy Oil HTGC Analysis. A Coupled Thermo-Hydro-Chemical (THC) Multiphysics Modelling Approach

2021 ◽  
Author(s):  
Diana Margarita Hernandez-Baez ◽  
Alastair Reid ◽  
Antonin Chapoy ◽  
Bahman Tohidi ◽  
Roda Bounaceur ◽  
...  
Keyword(s):  
Flow Rate ◽  
Heavy Oil ◽  
Reactive Transport ◽  
High Efficiency ◽  
Thermal Cracking ◽  
Low Flow ◽  
Oil Hydrocarbons ◽  
Multiphysics Modelling ◽  
Physics Model ◽  
Modelling Approach

This chapter provides an insight into the reactive transport in a capillary column which heavy-oil hydrocarbons undergo when analysed by high temperature gas chromatography (HTGC), and their implications on characterisation outcomes, namely thermal cracking of the injected sample; and incomplete or non-elution of heavy components from the column, by using a coupled Thermo-Hydro-Chemical (THC) multiphysics modelling approach. For this purpose, a computational coupled THC, multicomponent, multi-physics model is developed, accounting for: multiphase equilibrium using an in-house, extended thermodynamics distribution factors dataset, up to nC98H198; transport and fluid flow in COMSOL and MATLAB; and chemical reactions using kinetics and mechanisms of the thermal cracking, in CHEMKIN. The determination of the former extended dataset is presented using two complementary HTGC modes: i) High-Efficiency mode, with a long column operated at low flow rate; and ii) true SimDist mode, with a short column operated at high flow rate and elution up to nC100H202.

scholarly journals Genesis of solid bitumen

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hamed Sanei
Keyword(s):  
Organic Matter ◽  
Crude Oil ◽  
Heavy Oil ◽  
Thermal Cracking ◽  
Schematic Model ◽  
Reservoir Rocks ◽  
Solid Bitumen ◽  
Tight Reservoir ◽  
Higher Temperature ◽  
The Continuum

Abstract This paper presents a new schematic model for generation and timing of multiple phases of solid bitumen throughout the continuum of organic matter maturation in source and tight reservoir rocks. Five distinct stages in the evolution of solid bitumen are proposed: (1) diagenetic solid bitumen (or degraded bituminite), which is not a secondary maceral resulting from the thermal cracking of kerogen. Instead it is derived from degradation of bituminite in the diagenesis stage (Ro < 0.5%); (2) initial-oil solid bitumen, is a consolidated form of early catagenetically generated bitumen at the incipient oil window (Ro ~ 0.5–0.7%); (3) primary-oil solid bitumen is derived from thermally generated bitumen and crude oil in the primary oil window (Ro ~ 0.7–1.0%); (4) late-oil solid bitumen (solid-wax) is derived from the waxy bitumen separated from the mature paraffinic heavy oil in the primary- and late-oil windows; and (5) pyrobitumen, which is mainly a non-generative solid bitumen, is evolved from thermal cracking of the remaining hydrocarbon residue and other types of solid bitumen in the dry gas window and higher temperature (Ro > 1.4%). This model shows concurrence of multi-populations solid bitumen with oil, bitumen, and other phases of fluid hydrocarbon residue during most of the maturity continuum.

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