Design of Sour Gas Treatment Plant Faculty Advisor: Dr.Fahmi Abu Al-Rub Industrial Contact: Dr.Mohamed Al-Marzouqi Coord

1. United Arab Emirates University Faculty Of Engineering Graduation Project Unit Graduation Project I Design of Sour Gas Treatment Plant Faculty Advisor:Dr.Fahmi Abu Al-Rub Industrial Contact:Dr.Mohamed Al-Marzouqi Coordinator:Dr.Salah Al-Omary.

2. United Arab Emirates University Faculty Of Engineering Graduation Project Unit Graduation Project I Sour Gas Treatment Plant Done by: Osama Ali 980715144 Yousif Mohammed 980710588 GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

3. Presentation content • Introduction • Processes Selection • Absorption Process by Amine Solution GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

4. Introduction

5. Introduction Natural Gas Non-Hydrocarbon (Sour Gas) Hydrocarbon What is Sour Gas? Sour Gas is acidic gases such as Carbon dioxide and hydrogen sulphide. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

6. Sour Gas Composition Note: The composition of components is from ADMA Company GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

7. Presentation content Effect of Sour Gas Environmental effects Industrial effects GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

8. Carbon Dioxide - Corrosive material - Reduce the heating value - Non-combustible component GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

9. Hydrogen Sulphide - H2S is a highly toxic - Colorless - Flammable gas - 4.3% LEL and 45% HEL by volume with an auto-- ignition temperature of 500oF (292oC). Heavier than air (1.18 times heavier). - It may accumulate in dangerous concentrations in drains, valve pits, vessels and tanks. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

10. Health Effect GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

11. Processes Selection

12. Quality specifications • Hydrogen sulphide must be less than 6 mg/m3 to prevent the effect of corrosion in process equipment. • Carbon dioxide is limited to 2% maximum to prevent dilution of the heat producing combustible sales gas. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

13. Conditions GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

14. Processes selection Process Type Absorption Adsorption GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

15. Absorption Absorption process is used to remove a component (solute) from the gas stream by contacting the gas with a liquid solution (solvent). Sweet Gas Lean Solvent Natural Gas Rich Solvent GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

16. Adsorption Adsorption is the process of removing impurities from a gas stream by means of a solid material called adsorbent that has special attraction for the impurities. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

17. Absorption Process by Amine Solution

18. Introduction • Absorption requires mass transfer of substance from the gas stream to the liquid. • The component which is absorbed is called solute and the liquid is called solvent. • The relation between Absorption & Stripping • If the concentration of the vapor and liquid are in equilibrium, no driving force exist so no mass transfer will occur Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

19. Choice of solvent: • High solubility. • Low volatility. • Easy to recovery. • Low viscosity. • Low cost. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

20. Amine Chemistry The alkanolamines are the most generally accepted and widely used solvent for the removal of H2S and CO2 from natural gas. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

21. Amines ·MonoEtanol Amine (MEA) ·DiEthanol Amine (DEA) ·Methyldiethanolamine (MDEA) GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

22. Amines • From the three types of amines, DEA amine is selected. The reasons for select DEA are in following points: • DAE is much less corrosive to carbon steel than MEA • DEA is less volatile then MEA • MDEA is much less reactive than either DEA GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

23. GAS SWEETENING BY DEA Process Description The gas sweetening process consists basically of two parts : a. Absorption b. Regeneration Process Reaction GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

24. DEA Process GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed

25. Conclusion

26. Conclusion • Absorption with amine was selected. • Among the amine processes, the DEA process was found to be the best to treat the sour gas with the suggest specifications. • Sour gas contains H2S and CO2, H2S was highly toxic, thus experiment analysis could not be carried out in our laboratories. Since H2S safety requirements are not available in the Chemical Engineering Department laboratories. GP 1 :Design of Sour Gas Treatment Plant Done By :Osama Ali & Yousif Mohammed