Fired heater for Vacuum Distillation Unit (VDU)
Transheat scope
Thermal design, mechanical design, structure design, refractory design, piping stress analysis, specifications for bought out items, complete 3D modelling of heater, fabrication drawings and material lists from the same 3D model.
Installation location : Iraq.
Thermal design by Transheat.
All design documents reviewed by : FOX, Iraq
Major design attributes
- Forced draft, Box heater
- Horizontal tubes in radiant section
Use of 4”, 6”, 8” and 10” tubes in radiant section in a two-pass layout
- Fuel fired : Heavy oil plus off gas
- Process fluid in convection and radiant sections.
- Steam superheating and On-board APH coils in convection section
Steam injection considered in design
- Piping stress analysis of complete coils with cross-over piping
- Steam – air decoking provisions
Software tools used for thermal design : Aspen, HTRI XfhUltra
