Samenvatting
Shell wants to strive through energy transition and become a net zero energy supplier by the year 2050. To generate the required cashflow, Shell is growing its chemical business activities especially in the higher value chemicals segment. Aim of this project was to analyze and optimize the energy consumption and carbon footprint of a Shell proprietary technology that fits into Shell’s business strategy.
Using the method of pinch analysis, the energy consumption and heat integration potential of the respective production complex was analyzed. A significant heat integration potential of more than 50% energy saving was identified. Due to practical limitations only one interesting heat integration opportunity could be realized. The heat integration opportunity was further analyzed, and respective heat exchangers designed, and the process was proven to be technically and economically feasible.
Due to practical limitations in the heat integration different technological approaches were collected to further decrease the energy consumption of the complex. Next to the heat integration opportunity, two of these ideas were analyzed closer regarding their feasibility. The first opportunity is an optimization of a separation section of on specific unit. A fundamental process synthesis was performed, and three different distillation line-ups were identified. In a stepwise approach, the models were optimized, and the least energy efficient ones were discarded. A line-up that is similar to the original with optimized parameters was identified as the most efficient one.
Crystallization was analyzed as a possible technology for ultra-purification of one product instead of distillation. After identifying a suitable technology provide, the feasibility of the specific application could be confirmed.
Overall, the identified technologies could be proven feasible and a total energy consumption reduction of 24.4 MW for the most relevant business case were identified, saving significantly more energy than identified as the original heat integration potential. This is equivalent to 62 kt/a of CO2 emissions.
Using the method of pinch analysis, the energy consumption and heat integration potential of the respective production complex was analyzed. A significant heat integration potential of more than 50% energy saving was identified. Due to practical limitations only one interesting heat integration opportunity could be realized. The heat integration opportunity was further analyzed, and respective heat exchangers designed, and the process was proven to be technically and economically feasible.
Due to practical limitations in the heat integration different technological approaches were collected to further decrease the energy consumption of the complex. Next to the heat integration opportunity, two of these ideas were analyzed closer regarding their feasibility. The first opportunity is an optimization of a separation section of on specific unit. A fundamental process synthesis was performed, and three different distillation line-ups were identified. In a stepwise approach, the models were optimized, and the least energy efficient ones were discarded. A line-up that is similar to the original with optimized parameters was identified as the most efficient one.
Crystallization was analyzed as a possible technology for ultra-purification of one product instead of distillation. After identifying a suitable technology provide, the feasibility of the specific application could be confirmed.
Overall, the identified technologies could be proven feasible and a total energy consumption reduction of 24.4 MW for the most relevant business case were identified, saving significantly more energy than identified as the original heat integration potential. This is equivalent to 62 kt/a of CO2 emissions.
| Originele taal-2 | Engels |
|---|---|
| Begeleider(s)/adviseur |
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| Plaats van publicatie | Eindhoven |
| Uitgever | |
| Status | Gepubliceerd - 31 jan. 2023 |
Bibliografische nota
EngD thesis. - Confidential until 01-2048.Duurzame ontwikkelingsdoelstellingen van de VN
Deze output draagt bij aan de volgende duurzame ontwikkelingsdoelstelling(en)
