Integrated Process and Controller Design Software Tool – ProCACD

ProCACD: A computer-aided versatile tool for process control

Process synthesis and design methods for process intensification

Challenges in the design of formulated products: multiscale process and product design

The nature and role of process systems engineering

Life cycle assessment (LCA) methodology is a well-established analytical method to quantify environmental impacts, which has been mainly applied to products. However, recent literature would suggest that it has also the potential as an analysis and design tool for processes, and stresses that one of the biggest challenges of this decade in the field of process systems engineering (PSE) is the development of tools for environmental considerations. This article attempts to give an overview of the integration of LCA methodology in the context of industrial ecology, and focuses on the use of this methodology for environmental considerations concerning process design and optimization. The review identifies that LCA is often used as a multi-objective optimization of processes: practitioners use LCA to obtain the inventory and inject the results into the optimization model. It also shows that most of the LCA studies undertaken on process analysis consider the unit processes as black boxes and build the inventory analysis on fixed operating conditions. The article highlights the interest to better assimilate PSE tools with LCA methodology, in order to produce a more detailed analysis. This will allow optimizing the influence of process operating conditions on environmental impacts and including detailed environmental results into process industry.

Thirty Years of International Symposia on Process Systems Engineering

PSE and business decision-making in the chemical engineering curriculum

Optimization and Heat Exchanger Network Design of Diethyl Carbonate Two-step Synthesis Process from CO2 and Propylene Oxide

Energy Systems Engineering

A systematic methodology for the design of continuous active pharmaceutical ingredient production processes

Towards further internal heat integration in design of reactive distillation columns—Part IV: Application to a high-purity ethylene glycol reactive distillation column

The proposed new method is applicable for control of linear stable single-input-single-output non-minimum phase systems even with unknown mathematical model and unstructured uncertainties. The control objective is to provide required nominal maximum overshoot and settling time of the controlled variable y(t). The proposed new controller design approach guarantees fulfillment of these performance measures specified by the designer for processes with unstable zero. The developed algorithm has been extended to guarantee robustness of the PID controller design for uncertain processes modelled by unstructured uncertainties, and verified on a vast batch of benchmark examples.

Although induced gas flotation is routinely practiced on fixed platforms, there are special challenges for practicing this technology on deep water platforms. This paper presents an overview of the physical and chemical principals of how induced gas flotation actually works, reviews the special challenges involved in applying induced gas flotation technology on a floating platform, and outlines the process and vessel design requirements for the effective use of compact induced gas flotation on a deep water platform. The challenges for induced gas flotation on a floating platform include designing compact systems that minimize space and weight requirements, dealing with water that may contain hydrate inhibitors such as methanol, cleaning water with very small (and relatively stable) oil droplet size distributions, cleaning water below the Wax Appearance Temperature, and designing compact flotation cells that are tolerant of slosh-motion. The negative impact of process recycle streams on flotation will be illustrated. The successful practice of compact induced gas flotation on a deep water platform requires a combination of good overall process design, an understanding of the water chemistry involved, and well designed equipment. An example is given to illustrate how process design considerations can affect the performance of flotation as a water cleaning technology. Flotation Mechanisms There are three mechanisms by which oily contaminants are removed by induced gas flotation. These mechanisms operate singly or in combination depending upon the specific characteristics of the produced water and the level of attraction and wetting between the gas bubbles and the oily contaminants. The mechanisms are as follows:Oil coats the rising gas bubbles. This mechanism is operable when the contact angle between the oil and the gas bubble is low (wetting is high).Oil droplets and oily contaminants stick to a gas bubble and rise with it to the surface. This mechanism is operable at moderately low contact angles (modest attraction of oil to gas bubble) and is most efficient when contaminants and gas bubbles are of similar size.Oil droplets and oily contaminants are dragged behind in the wake of a rising gas bubble to the water's surface. This is the weakest interactive mechanism and does not require a low contact angle. Some authors believe that the third mechanism, although being the weakest, is dominant in most oilfield flotation systems.1,2 Mechanical Requirements for Efficient Flotation For all of the listed flotation mechanisms, efficiency is enhanced by maximizing the number of interactions between the contaminants and the gas bubbles. Interactions are maximized by the following:Uniform distribution of oily water throughout the flotation cellUniform distribution of gas bubbles throughout the flotation cellMinimizing the size of the gas bubblesMaximizing the size of the contaminants to be removedMaximizing the tendency of the contaminants to remain in contact with rising gas bubbles Vessel Hydraulics. The first points are related to flotation cell hydraulics.

Process Systems Engineering: Quo Vadis?

Hyperbranched polymers: Phase behavior and new applications in the field of chemical engineering