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研究生：	蘇諾芮 Rasa Supankanok
論文名稱：	使用熱整合，CO2補捉，及真空管太陽能集熱器之具負碳排的棕櫚油生產綠色柴油製程設計 Carbon-Negative Design of Green Diesel Production from Palm Oil Using Heat Integration, CO2 Capture, and Evacuated-Tube Solar Thermal Collector
指導教授：	吳煒 Wu, Wei
學位類別：	碩士 Master
系所名稱：	工學院 - 化學工程學系 Department of Chemical Engineering
論文出版年：	2022
畢業學年度：	110
語文別：	英文
論文頁數：	133
外文關鍵詞：	Palm oil, Green diesel, Hydrotreatment, Heat integration, CO2 capture, Evacuated-tube solar collector
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Hydrotreatment process of palm oil as a biomass is developed to produce green diesel and green liquefied petroleum gas (LPG). Three main units are used in the process (Design 1): a fixed-bed hydrotreating (FBH) reactor, a three-phase separator and cryogenic separators. The kinetic parameters of hydrotreating reaction used for Aspen Plus® model of FBH reactor are validated by the experimental data. The optimal operating parameters of FBH reactor including hydrotreating temperature, hydrogen pressure, LHSV and H2/oil ratio are determined by using response surface methodology (RSM) in Design-Expert®. Evacuated-tube solar collector (ETSC) system and pre-/post-separation CO2 capture of Designs 2 and 3 are introduced to reduce the CO2 emissions from furnace and make CO2 product. Both designs can achieve the carbon-negative production process and reduce CO2 emissions by 42.5%. The ETSC system could produce thermal energy of approximately 85 MWh/year which equal to 10,000 dollars per year of electricity cost. Heat integration is preformed into three designs to minimize the energy consumption of the process leading to increase of net efficiency. Three designs can improve their net efficiencies by 67.6-68.5 %. The green diesel production capacity of three designs is 1,083 kg/h (98.3 wt%). By comparison, LPG purity of Design 3 (100 wt%) is greater than Design 2 (84.5 wt%) and its captured CO2 product is higher than Design 2 by 22 %. Therefore, Design 3 is significantly superior to other designs.

Abstract………………………………………………………......	I
Acknowledgements………………………………............	II
Contents…………………...…………………………………...	III
List of Tables…………………………………………………..	VII
List of Figures…………………………………………............	IX
Nomenclature………………………………………………….	XIV
Chapter 1. Introduction……………………………..	1
     1.1 Background…………………………………………	1
     1.2 Objectives…………………………………………......	3
     1.3 Scopes of work………………………………….......	3
     1.4 Expected outputs…………………………………	4
Chapter 2. Literature review……………………………	5
     2.1 Green diesel…………………………………………...	5
           2.1.1 Mechanism of hydrotreating reaction.....7
           2.1.2 Kinetic of hydrotreating reaction…....9
           2.1.3 Green diesel production process…...10
     2.2 Evacuated-tube solar collector system (ETSCs)…12
           2.2.1 Solar power potential in Thailand…...12
           2.2.2 Configuration of evacuated-tube solar collector…13
           2.2.3 Principle of evacuated tube……………	15
           2.2.4 Process of evacuated-tube solar collector system…15
           2.2.5 Heating medium……………………….........17
     2.3 Mathematical model………………………………18
           2.3.1 Energy transfer in evacuated-tube solar collector…18
           2.3.2 Vapor/liquid equilibrium (VLE) of heat transfer fluid...22
     2.4 Literature survey……………………………………24
Chapter 3. Research methodology…………………27
     3.1 Process design of green diesel production by using Aspen Plus®……….27
           3.1.1 Addition of components………………27
           3.1.2 Selection of thermodynamic method………28
           3.1.3 Validation of kinetic parameters with experiment……28
           3.1.4 Reactor design………………………………32
           3.1.5 Separation and purification design…36
           3.1.6 Addition of utilities and carbon tracking in Aspen Plus®……..52
           3.1.7 Net efficiency calculation…………………56
           3.1.8 Design of the ETSC system for supplying thermal energy to green diesel process……………57
     3.2 Study of the effect of heating medium volume on ETSC performance……	60
           3.2.1 Materials and equipment………………	60
           3.2.2 System preparation…………………………60
           3.2.3 System operation and data recording…61
     3.3 Modification of evacuated tube inner structure…...62
           3.3.1 Materials and equipment…………………62
           3.3.2 Evacuated tube modification……………62
           3.3.3 Experimental setup and data recording………63
Chapter 4. Results and discussion………………………65
     4.1 Validation of kinetic parameters for hydrotreating reaction……………..65
           4.1.1 Validation of kinetic parameters from hydrotreating temperature effect………………………65
           4.1.2 Validation of kinetic parameters from hydrogen pressure effect.....67
           4.1.3 Validation of kinetic parameters from liquid hourly space velocity effect……………………...68
           4.1.4 Validation of kinetic parameters from hydrogen to oil ratio effect………………………………69
     4.2 Reactor design and optimization of operating parameters for hydrotreating reaction………….....71
           4.2.1 Develop of response surface quadratic model…………………71
           4.2.2 Optimization of operating parameters for hydrotreating reaction..........73
     4.3 Selection of separation and purification pathway………………………..	77
           4.3.1 Mass balance and energy consumption…77
           4.3.2 Heat integration analysis…………………84
           4.3.3 CO2 emission analysis………………….	90
     4.4 Integration of ETSC system with green diesel production process……...	95
     4.5 Effect of heating medium volume on ETSC system performance……... 97
     4.6 Validation of mathematical model of ETSC system…….………………100
     4.7 Inner structure of evacuated tube modification.........101
Chapter 5. Conclusions……………………………......106
References…………………………………………….….	108
                                    

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校內：2025-07-31公開
校外：2025-07-31公開

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