Design and Economic Assessment of Alternative Evaporation Processes for Poly-Lactic Acid Production.

ABSTRACT: 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

SUBMITTER: Lim J 

PROVIDER: S-EPMC9143702 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature