This document summarizes a student project simulating CO2 removal from the flue gas of a cement plant in Libya using amine absorption. The student uses Aspen Plus to model the process, evaluating the feasibility of capturing 97% of CO2 from the flue gas stream containing 4.37% CO2 using 12.1% monoethanolamine (MEA) as the absorbent. The simulation examines operating parameters like absorbent flow rate and concentration. It is found that the capital cost is high due to the large flue gas volumes and need to compress the captured CO2. The project evaluates the feasibility of using amine absorption to capture CO2 at a cement plant.

1. University of Tripoli
Faculty of Engineering
Chemical Engineering Department
B. SC. Project
Aspen Simulation of CO2 Removal by Amine Absorption from the Khums cement Plant
PREPARED BY:
Hassan Salem Bin-Najma Ibrahim AL-Hadi Othman
SUPERVISED BY:
Dr. Yousef Swesi

2. Carbon dioxide storage and
Transport
 Pipelines today operate as a mature market technology and are the most common method for transporting
CO2. Gaseous CO2 is typically compressed to a pressure above 8 MPa in order to avoid two-phase flow
regimes and increase the density of the CO2.
 Captured CO2 could be deliberately injected into the ocean at great depth, where most of it would
remain isolated from the atmosphere for centuries.
hassansalem @yahoo.com
hassanbnjm074@gmail.com

3. Objectives
1- Carbon dioxide capture from cement khoms plant using amine-based CO2 capture
technology.
2- The overall objective is to evaluate the feasibility of obtaining the heat required for
amine absorption for a particular recovery for a given a set of equipment specifications
and operating conditions from cement plants
3- To develop a model that simulates the removal of CO2 using MEA absorption from cement
plant and design a process of CO2 capture for the cement industry.
4- CO2 absorption process is simulated with commercial ASPEN Plus code and various
combination of the operating parameters, such as flow rates of flue gas and amine solution,
concentration of amine solution, temperature of absorption.

4. Process Description and Simulation

5. Process Description and Simulation
Stream Name Stream Properties Value
FLUE-GAS
Temperature, °C 120
Pressure, bar 1.01325
Mole Flow, kmol/hr 3525.552
Mole Fraction
H2O 0.0815
CO2 0.0437
N2 0.758
O2 0.117
Stream Name Stream Properties Value
LEAN-IN
Temperature, °C 40.17222
Pressure, bar 1.702726
Mole Flow, kmol/hr 9843.81
Mole Fraction
H2O 0.847
CO2 0.033
MEA 0.121

6. Conclusion
 the using 12.1 mole % of MEA we recovered 97 mol %
The ENRTL model was used in the simulation has a some difficult is found to
convergence in the tower.
The capital cost was found highly a cause to the huge quantities of flue gas and to
uses compressor to liquefied the co2 by 3 stage
hassansalem @yahoo.com
hassanbnjm074@gmail.com
The design and costing of a MEA based CO2 capture process for cement plant was
studied using Aspen Plus ™

7. hassansalem @yahoo.com
or
hassanbnjm074@gmail.com