On Aspects Relating To A Hydrochlorination Facility For The Processing Of Refinery Precious Metal Residue Materials.
Date
1990
Authors
Fortmann, Noel Alwin.
Journal Title
Journal ISSN
Volume Title
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Abstract
A hydrochlorination facility was developed for tile
processing of refinery precious metal residue materials
on the laboratory and pilot scale. Hazard
elements were identified and evaluated using an Event
Tree Analysis. An exponential technique was applied
to estimate the cost of the proposed production hydrochlorination
facility. The estimated cost was R120 000.
The Expected Present Value Ratio was +190 which indicated
satisfactory project economics.
The reactor material for the pilot scale unit was
selected using a weighted values quantitative material
selection procedure. Stainless steel Type 316L and
Type 310 were selected. Failure of the Type 516L
reactor occurred after 40 hours service. The mode of
failure was extensive surface scaling which was attributed
to the hydrogen chloride, sulphide gases and
1 000 °c operating envirornment.
Subject to certain provisions it would be feasible to
commission a safe and profitable production hydrochlorination
facility. The consumable reactor concept was
based on its replacement after 40 hours service. This
was justifiable because of the high value of the material
and the saving in down-stream processing costs.
Description
A project report submitted to the Faculty of Engineering,
University of the Witwatersrand, Johannesburg in partial
fulfilment of the requirements for the Degree of Master
of Science in Engineering.
Keywords
Metallurgical research., Metals -- Refining -- Research.