Modeling and Control of Tray Temperature Along with Column Pressure in a Pilot Plant Distillation Column

• Published in: SN computer science 2020-11, Vol.1 (6), p.330, Article 330
• Main Authors: Rajaraman, Janani, Indiran, Thirunavukkarasu, Yadav, Eadala Sarath, Selvanathan, Shanmuga Priya
• Format: Article
• Language: English
• Subjects: Columnar structure; Computational Statistics; Computer Imaging; Computer Science; Computer Systems Organization and Communication Networks; Control algorithms; Controllers; Conversion; Data Structures and Information Theory; Distillation; Distilled water; Feed rate; Flow velocity; Information Systems and Communication Service; International conferences; Mathematical models; Original Research; Pattern Recognition and Graphics; Pilot plants; Simulation; Software Engineering/Programming and Operating Systems; Vapors; Vision
• ISSN: 2662-995X; 2661-8907
• DOI: 10.1007/s42979-020-00352-3

A simple control technique based on centralized and decentralized structure is discussed here for a tray temperature along with pressure developed inside the column for a pilot plant distillation column. The flow rate of vapor condenser cooling water is used to control the pressure ( P ) developed inside the column. The flow rate of the water to condense the vapor increases, when the column pressure increases and vice versa. Some of the other factor that has an impact on the column pressure is the boil-up rate, rate of reflux ow, feed rate, set point change in composition. The internal reflux and the speed of the vapor through the column gets affected by the pressure developed. There exists a strong interaction between the two interdependent variables pressure and temperature. The goal is to regulate the temperature and pressure near the bottom tray by nominally manipulating the reflux flow and boilup rate.