Browsing Engineering by Issue Date
Now showing items 1-20 of 1423
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A quantification of chemical and physical factors on SO2 oxidation catalysts
(Potchefstroom University for Christian Higher Education, 1989)This study entailed the design and optimization of the supported liquid phase V2O5 catalyst system for SO2 oxidation. The active melt consisted of V205 dissolved in alkali metal pyrosulphates. The activity increased ... -
Numeriese model van vloei deur 'n vastebedvergasser
(North-West University, 1990)The gasifier reactor forms an integral part of the SASOL prosess. It is therefore important that the gasifier must be operated at its optimum and most stable condition. The flow of gas in the reactor has a direct influence ... -
Die effektiwiteit van geselekteerde ekstraheermiddels vir die skeiding van n–propanol en 2–butanol tydens ekstraktiewe distillasie
(Potchefstroom University for Christian Higher Education, 1992)The effectiveness of selected extractive agents for the separation of n-propanol and 2-butanol was evaluated with the aid of a circulation vapour-liquid equilibrium still. The difference in boiling points between n-propanol ... -
Hydrodynamic studies and reactor modelling of a three phase slurry reactor in Fischer Tropsch application
(Potchefstroom University for Christian Higher Education, 1992)In this .study the hydrodynamic characteristics of the slurry bed reactor was investigated. This study was aimed to the under" standing of the important parameters that describe the hydrodynamic regime and their quantification. ... -
The effect of selected solvents on the relative volatility of the binary system: 1–octene – 2–hexanone with the aim of separating the azeotropic mixture
(Potchefstroom University for Christian Higher Education, 1994)The removal of oxygenates from olefins has tremendous industrial significance. This study dealt specifically with potential azeotropic and extractive distillation processes for the purification of higher alpha olefins. An ... -
Fischer-Tropsch studies in the slurry phase favouring wax production
(North-West University, 1994)The Fischer-Tropsch synthesis over iron and cobalt based catalysts has been investigated in the slurry phase. Reaction conditions were restricted to those conducive for the optimum production of synthetic wax (i.e. high ... -
Numerical simulation of the plastics moulding process using a thin gap numerical model
(Potchefstroom University for Christian Higher Education, 1995)The injection moulding process is one of the most popular means of mass producing components to very small tolerances. Before the advent of the affordable computer, the methods used in injection mould design were empirical ... -
The development and implementation of new TTC flotation chemicals
(Potchefstroom University for Christian Higher Education, 1998)Batch floats were done on Merensky ore from Section 10 at Impala Platinum. The ultimate objective of this project was a pilot plant trial and certain questions had to be answered before the trial could be conducted. To ... -
Simulation of a micro heat pump cycle
(1998)The purpose of this study was to develop a thermal cycle simulation for a micro heat pump. A feature of the simulation is that it can simulate the four qasic components in detail, based on fundamental principles. The product ... -
The skeletal isomerisation of the N–butenes catalyst performance and kinetic investigation
(Potchefstroom University for Christian Higher Education, 1998)With the advent of catalytic converters being placed in the exhaust systems of motor vehicles, in an attempt to reduce pollution, the use of tetra ethyl lead as an anti-knock additive to fuel was no longer acceptable. ... -
The use of crosslinked polyethylene for the manufacturing of membranes
(Potchefstroom University for Christian Higher Education, 1999)Increasing environmental awareness over the past decade as well as stringent environmental laws forced all factories to invest in water treatment processes for effluent treatment before discharge or re-use. Most of these ... -
The management and implementation of a data terminal project on a global system for mobile communications
(Potchefstroom University for Christian Higher Education, 1999)With the demand for more control over remote systems and access to remote data increasing, there existed the need for a more efficient and low cost means of transmitting this data. Traditionally, small telemetry data ... -
A macroscopic determination of the impact of Lethabo coal quality upon the optimum combustion air quantity
(Potchefstroom University for Christian Higher Education, 1999)Lethabo Power Station burns a unique low grade coal with low volatile content. This merits the optimisation of the total combustion air quantity with efficiency as main criterion to produce an air flowsteam flow curve as ... -
Performance evaluation of a gasifier cooling jacket by means of a homogeneous two-phase flow simulation model
(North-West University, 2000)SASOL II uses a number of coal-fired Gasifiers with water-cooled jackets to produce raw-gas for the purpose of manufacturing petroleum from coal. Excess heat generated by firing of the coal is removed with the aid of a ... -
Advanced network modelling techniques for power system state estimation
(North-West University (South Africa)., 2000)State estimation is the process to calculate estimates for unknown state variables of a power network by minimising an objective function. Classical state estimators take into account that network parameters e.g. impedances ... -
The leaching behaviour of a Ni–Cu–Co sulphide ore in an oxidative pressure–acid medium
(Potchefstroom University for Christian Higher Education, 2001)Hydrometallurgical processing of sulphide concentrates is an attractive method for the selective extraction of valuable metals. The dissolution of minerals in a leaching process involves several electrochemical parameters ... -
Experimental investigation into the application of a magnetic dense medium cyclone in a production environment
(Potchefstroom University for Christian Higher Education, 2001)The magnetic dense medium cyclone project was undertaken at Koingnaas Mine on a 250 mm diameter cyclone during 1998 and a 510 mm cyclone during 2000. The aim of the project was to evaluate the performance of a magnetic ... -
Determining the potential impact of a micro heat pump for domestic water heating
(2002)Hot water used in the South African domestic sector is mostly heated by in-tank electrical resistance heaters. These so-called "geysers" are the major contributors to the undesirable high morning and afternoon peaks imposed ... -
Development of a novel active muzzle brake for an artillery weapon system
(Potchefstroom University for Christian Higher Education, 2002)A conventional muzzle brake is a baffle device located at some distance in front of the muzzle exit of a gun. The purpose of a muzzle brake is to alleviate the force on the weapon platform by diverting a portion of the ... -
The integration of enterprise asset management and the supply chain
(Potchefstroom University for Christian Higher Education, 2002)This study was born out of the author's hands-on experience of pioneering the integration of Enterprise Asset Management (EAM) and the Supply Chain (SC). This first happened during a project undertaken as Project Manager ...
