Contents & References of Dynamic simulation of caustic regeneration unit and optimization of operational parameters of the third refinery of South Pars gas complex
List:
Abstract ..1
Introduction ..2
Chapter One: Types of sulfur impurities in liquid gas and their separation methods. 3
1-1- Types of sulfur impurities in liquid gas. 4
1-1-1- Main and major impurities. 5
1-1-2- Secondary and tolerant impurities. 7
1-2- Reasons for separating the main sulfur impurities in liquid gas. 8
1-3- Methods for separating sulfur impurities in liquid gas. 9
1-3-1- Dry processes. 13
1-3-1-1- Dry renewable processes. 13
1-3-1-2- Regenerative dry processes. 15
1-3-1-3- Hybrid dry processes. 17
1-3-2- Wet processes. 18
1-3-2- 1- Desulfurization with chemical solvents (amines). 19
1-3-2-2- Desulfurization with solvents Physical. 20
1-3-2-2-1- Selexol physical solvent. 21
1-3-2-2-2- Caustic soda solutions. 23
1-3-2-3- Desulfurization with hybrid solvents. 24
1-3-3- Summary of liquid gas sweetening processes. 25
Chapter Two: Sweetening process Liquid gas with soda physical solution. 28
2-1- Introduction..29
2-2- Description of mercaptanization process of liquid gas by soda. 29
2-2-1- Description of propane extraction unit process. 29
2-2-2- Description of butane extraction unit process. 30
2-2-3- Description of caustic reduction unit process. 32
2-3-Reactions of mercaptanization process by soda.33
2-3-1- Main reactions.33
2-3-2- Side reactions.35
2-4- Catalyst of mercaptanization process by soda.38
2-5- Investigation of factors affecting mercaptans extraction process and liquid gas purification.40
2-5-1- The balance of phases and ionization of acids and bases. 40
2-5-1-1- The balance of acids and bases in the aqueous phase. 41
2-5-1-2- The balance between hydrocarbon and aqueous phases. 43
2-5-2- The effect of mercaptan type on the extraction process. 48
2-5-3- The effect of solution concentration hydroxide on the extraction process and the conversion reaction of mercaptans to sodium mercaptides. Mercaptan from liquefied gas. 60
2-6- Effective factors on soda reduction process. 61
2-6-1- Effect of sodium mercaptide concentration on conversion reaction of sodium mercaptides to disulfides. 61
2-6-2- Effect of soda concentration on catalyst solubility in soda solution. 63
2-6-3- Effect of soda concentration on mercaptides penetration and Free radicals. 64
2-6-4- The effect of temperature on the oxidation reaction of sodium mercaptides. 65
2-6-5- The effect of temperature on the catalyst activity in soda solution. 66
2-6-6- The effect of the molecular structure of mercaptan on the reaction speed. 68
2-6-7- The effect of the preparation method of the catalyst solution distributed in soda on the speed Reaction.68
2-6-8- The effect of gas environment on CoSPc catalyst activity and reaction speed. 70
2-6-9- The effect of mixing speed of soda catalytic solution and air on sodium mercaptide oxidation reaction speed. 73
Chapter 4: Description of the simulation and examination of its results. 77
4-1- Introduction.. 78
4-2- Description of the simulation. The optimal amount of air entering the oxidizer bed for soda regeneration. 91
4-4-2- The optimal amount of sodium solution concentration entering the oxidizer bed for soda regeneration. 93
4-4-3- The optimal value for the oxidizer temperature. 95
Chapter 5: Summary of contents and conclusions. 96
List of Persian sources. 100
List of sources Non-Persian..101
English abstract..104
Title page in English.105
Source:
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List of non-Persian sources:
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[17] Mazgarov, A.M., (2006), A selective treatment of various oils and gas condensates to remove light mercaptans and hydrogen sulfide, Chevron Research and Technology Co. (USA) (1976), Treat propane for COS removal, Hydrocarbon Processing, Page: 137-142.
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