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مجلة النفط والتعاون العربي
161
العدد
- 2017
أربعون
المجلد الثالث و ال
2016
أوابك العلمية لعام
�
ص لبحوث العلمية الفائزة بجائزة
�
عدد خا
66
56
the question must be asked as to why asphalt mix plants use gasoil instead of the
much cheaper heavier fuel. It must be remembered that cement kilns sometimes
use scrap tyers for fuel and used oil is certainly better environmentally
105
.
Burning used oil in space heaters for small businesses recovers the heat value but
is likely to cause local air pollution
22
and care must be taken here in the equipment
and set up design
23
.
Finally, low temperature burning
of waste oil must be avoided due to the potential
pollutants in gaseous emissions that can be released such as carbon monoxide,
sulphur and nitrogen oxides, particulate matter (PM 10), toxic metals, organic
compounds, hydrogen chloride and dioxins/furans
4
.
Processing Used Oil for Fuels:
1, 107
There are a number of processes that have been applied to condition used oil for
fuel. The treatment is said to be severe processing
22
as compared to the mild
processing needed for direct burning. These processes are in brief as follows
1,
4,107
.
The Propak process:
Fig (15). This process involves thermal cracking of the used oil followed by
distillation and stabilization to produce gasoil (diesel) and fuel oil. Used in
Canada and Belgium but the product quality is poor with respect to sulpher. Gas
fraction and naphtha may be used as process fuel.
Fig (15) - Propak process
–
source 107