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Brief
Description of project: Assiut cement plant operates 24 hours/day 7 days
a week, producing 4,646,400 tons of cement per year. Mazout (fuel #6)
had been used since the date CEMEX Egypt acquired Assiut Cement Company
in November 1999. There are three cement production lines where their
production capacities of cement are as follows: • Production Line #1:
1,815,000 t/year • Production Line #2: 1,415,700 t/year • Production
Line #3: 1,415,700 t/year The purpose of the project is to switch a
portion of the heavy fuel oil used in the clinker production process in
Kiln # 1 to biomass. The consumption of production line #1 is 480 t/d of
heavy fuel oil where the plant operates 330 d/yr. The plant will utilize
biomass cultivated from a farm owned by Cemex Egypt which is located
near the plant. The area for biomass cultivation in the farm is
approximately 500 acres. The plantation will require four years to grow
before harvesting takes place. Trees will be trimmed to collect the
required amount of biomass. Practically, "harvesting/trimming" will be a
process that takes place all year round, maintaining the trees area
always green. The annual quantity of biomass that will be cultivated per
acre was calculated. The substitution of heavy fuel oil will be done
gradually for production line # 1 according to the prepared schedule.
The plantation will take place at the end of 2005 while the actual
substitution of fuel will not start before 2009 with a starting
percentage of 4.8% to reach a maximum of 17.2% from 2012 onwards. Brief
description of technology: Reduction of CO2 emissions through partial
fuel substitution (from heavy oil to biomass). The biomass will be
transported to the cement plant through belt/screw conveyor after being
screened and grinded. Then, through a blower it will be conveyed to be
injected to the cement kiln. Organic farming will be considered as
opposed to the use of Nitrogen based fertilizers, in order to minimize
N2O emissions to the atmosphere. |
