Tag: THERMOSIPHON REBOILER
BG1-19 Heat Transfer and Pressure Drop in Vertical Tubeside Thermosiphon Reboiler Under Turndown
June 10, 2020This report summarizes HTRI data on vertical tubeside boiling, highlighting the shortcomings of current methods in accurately predicting tubeside pressure drop and heat transfer at low mass velocities. Improvements to the liquid holdup model and a warning message for thermal prediction close to turndown conditions are also discussed. When implemented in...
Research Update: Guidelines for Vertical Tubeside Thermosiphon Reboiler Turndown
May 28, 2020Thermosiphon reboilers often pose challenges for column operations in refineries and chemical processing plants. Some challenges are related to turndown, when reboiler circulation rates or duties are lower than design conditions. The process industry uses various checklists and criteria, though most guidelines have little to no validating data backing them up....
BG1-18 Turndown Operation of a Vertical Tubeside Thermosiphon Reboiler
October 21, 2019This report provides a comprehensive look at the turndown operation of a vertical tubeside thermosiphon reboiler (VTTR), including predictions of thermal and hydraulic performance and quantitative criteria for turndown limits. Data were collected for water, n-pentane, p-xylene, and n-pentane/p-xylene mixtures in an industrially relevant VTTR flow loop. The unit was systematically turned...