co2 capture for emission reduce in ccs system

1. S
CO2 Capture Using Deep
Eutectic Solvents
Prof. Emadadeen M. Ali
King Saud University, Saudi Arabia

2. Global Worming
Fossil fuels (coal, oil, natural gas)
Carbon Dioxide (CO2)
GlobalWarming

3. Sources of CO2 emissions

4. World-wide statistical data of CO2
26.18%
17.69%
5.33% 5.14%
3.66%
1.5%
2010
emissions
data
in
MILLION
METRIC
TONNES.
World
total
=
31,780.36
China USA India Russia Japan Saudi Arabia

5. CO2 separation process
Separation using
Sorbent/Solvent

6. Solvent Characteristics
S Preparation and material Cost
S Environmental impact
S Capacity

7. MEA
Advantage & Disadvantages
Advantages
S Inexpensive material (1ton of MEA cost $1100)
Disadvantages
S Low carbon dioxide loading capacity
S Equipment corrosion
S High-energy penalty during absorbent regeneration
MEA: Monoethanolamin is the most common material used in
industry to absorb CO2

8. Ionic Liquids
S A new class of compounds that have emerged in the last
twenty years with several applications in chemical and
physical separation.
S ILs are environmentally-friendly alternatives to organic solvent
for liquid/liquid extraction, and separation.
S ILs face a challenge in large-scale industrial applications,
due to complicated synthetic processes and the
expensive raw material chemicals

9. Deep Eutectic Solvents
S deep eutectic solvents (DESs) have been recognized as
a cost effective alternative to ILs
S DESs possess several advantages over traditional ILs.,
they can be prepared easily in high purity at low cost.
S In addition, they are non-toxic, have no reactivity with
water and most importantly being biodegradable

10. Objectives
1. Prepare different types of DES
2. Test the solubility of CO2 in these DES
3. Model the CO2 solubility using
Peng-Robinson EoS

11. EC 400 Variable volume high pressure
equilibrium cell (SEPAREX, France).

12. Experiment Protocol
S The visual cell is cleaned, evacuated using vacuum
pump, and kept at fixed temperature using a circulating
water bath.
S A pre-determined amount of DES is introduced to the cell
using the HPLC pump. CO2 is then introduced to the cell
at a certain pressure.
S The mixture is stirred using the magnetic bar until
equilibrium is achieved.
S The change in the volume of cell is recorded. The mass
of dissolved CO2 is calculated using Benedict-Webb-
Robin equation of state

13. Solubility Modeling
S Peng Robinson Equation of State
S Subject to:
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14. Solubility and physical properties of
DES at T=25 oC, P=125 psi
Code Components Ratio x Tc, K Pc, bar w
D01 Bc Glycerol 1 12 0.0511 749.0 34.1 1.4
D02 Bb Ethylene Glycol 1 12 0.0503 632.3 46.5 1.0
D03 Mb Ethanol Amine 1 6 0.1441 654.1 44.0 0.7
D04 Mb Ethanol Amine 1 7 0.1254 646.0 45.1 0.7
D05 Mb Ethanol Amine 1 8 0.1189 639.8 46.1 0.7
D06 CC Ethanol Amine 1 6 0.1096 594.1 48.9 0.7
D07 CC Di Ethanol Amine 1 6 0.0925 693.4 29.7 1.1
D08 TAB Ethanol Amine 1 6 0.1168 613.8 39.2 0.7
D09 TAB Di Ethanol Amine 1 6 0.1036 717.7 25.5 1.1
D10 TAB Tri Ethanol Amine 1 3 0.0830 795.7 19.3 1.4
BC: Benzyltryphenilphosphonium chloride, BB:n-Butyltriphenylphosphonium bromide,
MB: Methyltriphenylphosphonium bromide, TAB: Tetra Butyl Ammonium Bromide

15. Solubility and physical properties of
CC-salt /des at T=25 oC
Code Components Ratio
Pressure
(bar) x Tc, K Pc, bar w
I2 CC TG 1 4 1.38 0.0003 718.9 27.4 1.04
I2 CC TG 1 4 5.12 0.0021 718.9 27.4 1.04
I2 CC TG 1 4 8.61 0.0028 718.9 27.4 1.04
I2 CC TG 1 4 13.80 0.0101 718.9 27.4 1.04
CC: Choline Chloride, TG: Triethylene Glycol

16. Comparison of CO2 solubility in DESs, ♦:
experimental; ▲: model; □: corrected
model

17. : CO2 solubility in CC-based DEs with pressure, ♦:
experimental; ▲: model with fixed k;
□: model with variable k

18. Conclusions
S The solubility of CO2 in ethylene glycol and glycerol
based DESs is much smaller than that in MEA aqueous
solution
S The solubility depended on the type of salt used and on
the salt:HBD molar ratio.
S The modeling results indicated the necessity to adjust the
interaction parameter in order to improve the ability of the
PR EoS to predict the CO2 solubility

19. Thank you