Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production
In this work, alternative evaporation processes for PLA production were designed with economic assessment. The suggested processes are the multiple-effect evaporation (MEE) process and thermal vapor recompression (TVR)-assisted evaporation process. First, the MEE process can efficiently reuse waste...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/10/2120 |
| _version_ | 1797496176258318336 |
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| author | Jonghun Lim Hyungtae Cho Kwon-chan Son Yup Yoo Junghwan Kim |
| author_facet | Jonghun Lim Hyungtae Cho Kwon-chan Son Yup Yoo Junghwan Kim |
| author_sort | Jonghun Lim |
| collection | DOAJ |
| description | In this work, alternative evaporation processes for PLA production were designed with economic assessment. The suggested processes are the multiple-effect evaporation (MEE) process and thermal vapor recompression (TVR)-assisted evaporation process. First, the MEE process can efficiently reuse waste heat by additional column installation, thereby reducing the steam energy consumption. The proposed MEE process involves five columns, and after the evaporation in each column, the waste heat of the emitted vapor is reused to heat steam in the reboiler of the next column. Second, the suggested TVR-assisted evaporation process utilizes an additional steam ejector and recovers waste heat from the emitted vapor by increasing the pressure using high-pressure driving steam at the steam ejector. Each alternative process was modeled to predict the steam energy consumption, and to determine the cost-optimal process; the total annualized cost (TAC) of each alternative process was calculated as evaluation criteria. In the simulation results, the alternative processes using MEE and TVR reduced the steam consumption by 71.36% and 89.97%, respectively, compared to the conventional process. As a result of economic assessment, the cost-optimal process is the alternative process using TVR and the TAC can be decreased by approximately 90%. |
| first_indexed | 2024-03-10T03:00:54Z |
| format | Article |
| id | doaj.art-87dbbc85dd8647e9b8262a431b31e088 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:00:54Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-87dbbc85dd8647e9b8262a431b31e0882023-11-23T12:47:48ZengMDPI AGPolymers2073-43602022-05-011410212010.3390/polym14102120Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid ProductionJonghun Lim0Hyungtae Cho1Kwon-chan Son2Yup Yoo3Junghwan Kim4Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, 55, Jonga-ro, Ulsan 44413, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, 55, Jonga-ro, Ulsan 44413, KoreaAdvanced Materials Production Department, KCC Corporation, 19, Wanjusandan 4(sa)-ro, Jeonju 55321, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, 55, Jonga-ro, Ulsan 44413, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, 55, Jonga-ro, Ulsan 44413, KoreaIn this work, alternative evaporation processes for PLA production were designed with economic assessment. The suggested processes are the multiple-effect evaporation (MEE) process and thermal vapor recompression (TVR)-assisted evaporation process. First, the MEE process can efficiently reuse waste heat by additional column installation, thereby reducing the steam energy consumption. The proposed MEE process involves five columns, and after the evaporation in each column, the waste heat of the emitted vapor is reused to heat steam in the reboiler of the next column. Second, the suggested TVR-assisted evaporation process utilizes an additional steam ejector and recovers waste heat from the emitted vapor by increasing the pressure using high-pressure driving steam at the steam ejector. Each alternative process was modeled to predict the steam energy consumption, and to determine the cost-optimal process; the total annualized cost (TAC) of each alternative process was calculated as evaluation criteria. In the simulation results, the alternative processes using MEE and TVR reduced the steam consumption by 71.36% and 89.97%, respectively, compared to the conventional process. As a result of economic assessment, the cost-optimal process is the alternative process using TVR and the TAC can be decreased by approximately 90%.https://www.mdpi.com/2073-4360/14/10/2120poly-lactic acidmultiple-effect evaporationthermal vapor recompression |
| spellingShingle | Jonghun Lim Hyungtae Cho Kwon-chan Son Yup Yoo Junghwan Kim Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production Polymers poly-lactic acid multiple-effect evaporation thermal vapor recompression |
| title | Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production |
| title_full | Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production |
| title_fullStr | Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production |
| title_full_unstemmed | Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production |
| title_short | Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production |
| title_sort | design and economic assessment of alternative evaporation processes for poly lactic acid production |
| topic | poly-lactic acid multiple-effect evaporation thermal vapor recompression |
| url | https://www.mdpi.com/2073-4360/14/10/2120 |
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