Andrew Odjo

• PhD
• Chief Technology Officer at Clean Planet Energy

Gasoline coming from refinery fluid catalytic cracking (FCC) unit is a major contributor to the total commercial grade gasoline pool. The contents of the FCC gasoline are primarily paraffins, naphthenes, olefins, aromatics, and undesirables such as sulfur and sulfur containing compounds in low quantities. The proportions of these components in the...

In this work, mixtures of vacuum gas oil and low density polyethylene, a major component of common industrial and consumer household plastics, were pyrolytically co-processed in a fluid catalytic cracking (FCC) riser reactor as a viable alternative for the energy and petrochemical revalorisation of plastic wastes into valuable petrochemical feedsto...

In this work, disjunctive-genetic programming (D-GP), based on the integration of genetic algorithm (GA) with the disjunctive formulations of generalized disjunctive programming (GDP) for the optimization of process networks, has been proposed. Discrete optimization problems, which give rise to the conditional modeling of equations through represen...

Andrew Odjo, a process manager at EuroslotKdss shares his views on improving plant performance by expanding its ethylene dichloride (EDC) plant production and refurbishing its existing EDC heavies. EDC is widely used as a chemical intermediate and raw material, with around 95% of EDC being used in the production of vinyl chloride monomer (VCM), nea...

The article discusses the replacement of existing trays with modern ones to improve the performance of an ethylene dichloride (EDC) plant in Great Britain. It states that the company's EDC heavies still was built in the early 1990s and had a history of tray and internals removals and replacements. It notes that proprietary high capacity mini fixed...

Discrete optimization problems, which give rise to the conditional modelling of equations through representations as logic based disjunctions, are very important and often appear in all scales of chemical engineering process network design and synthesis. Disjunctive-Genetic Programming (D-GP), based on the integration of Genetic Algorithm (GA) with...

A UK-based specialty chemicals producer expanded its ethylene dichloride (EDC) plant production throughput by refurbishing its existing EDC heavies still. It removed the existing trays and replaced them with more modern ones to increase capacity and improve separation while retaining existing column attachments. The existing trays consisted of sing...

The study of the catalytic pyrolysis of mixtures of fuel and polymers is interesting in order to explore the possibility of using commercial fluid catalytic cracking (FCC) units or similar processes for recycling plastic wastes. In this work, different samples of vacuum gas oil (VGO), polyethylene (PE) and vacuum gas oil–polyethylene blends (VGO–PE...

This paper is focused on the study of the viscous flow behaviour of blends of polyethylene and Vacuum Gas Oil (VGO) under dynamic shear. The application of different models for the prediction of the shear viscosity under different industrial operating conditions of shear rates, temperature and base components weight fractions has also been investig...

In this paper, the viscous flow behaviour of Vacuum Gas Oil (VGO) with different fractions (0–10% wt.) of Low Density Polyethylene (LDPE) under dynamic shear has been investigated. Viscosimetry measurements of the blends at temperatures between 333 and 433 K using a BOHLIN Controlled Stress Rheometer, as well as compatibility studies using Differen...

In this article we address the design and optimization of chemical processes using Chemical Modular Process Simulators—that include state of the art models—including discontinuous cost and sizing equations. Equations are divided into “implicit” ones which include all the equations in the process simulators with an input–output black box structure,...

This paper describes a computational approach for performing structural optimization in process flowsheets that are described by implicit models in a sequential modular process simulator or in a third party program. The key points are how to select the design variables, how to deal with implicit equations and variables, and how to generate a Master...

Computer-aided engineering (CAE) simulation and experimental studies have been carried out on the cavity filling and gas packing steps in the gas-assisted injection molding of a contained-channel part. A mid-plane model of the three-dimensional geometry of the mold cavity has been proposed to be analyzed by the finite element method. The shot size,...