CATEGORY: NAPHTHA
THESIS
Effect
on naphtha yield, overall conversion and coke yield through different operating
variables in FCC unit using Aspen-Hysys simulator
Agrawal, Ankit Kumar (2012)
A thesis submitted in partial fulfillment of the requirements for the degree of
Bachelor of Technology in Chemical Engineering
Department Of Chemical Engineering, National Institute Of Technology, Rourkela
Fluid
Catalytic Cracking Unit is the pump house of any refinery. Distillation is the
initial step in the processing of crude oil and the residue which is coming out
from the distillation column enters as the feed in the FCC unit. Gasoline is
the main product of the FCC unit and it also produces byproduct which is more
olefinic and hence more valuable. Simulation of the fractional distillation has
been done to find out the feed composition which is the feed to the riser
reactor. The unit was further simulated under the desired specifications to get
the naphtha yield and compared with the plant data.
Different graphs were plotted by varying feed temperature, flow
rate, catalyst to oil ratio and were successfully compared with the modeled
data. Further simulation was done with two regenerators and production of SOx
was studied. The simulation result concludes that the SOx emission is lesser in
case of one regenerator. Two sets of catalyst were chosen and the final yields
were compared. Based on the plant requirement different types of catalyst are
used. Finally the effect of riser height was studied in one riser and dual
riser by keeping the operating parameters to be same and concluded with the
fact that naphtha yield increases in case of dual riser.
Free Full Text Source: http://ethesis.nitrkl.ac.in/3546/
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