Low-pressure separation of atmospheric residue while limiting thermal cracking and coke formation.
Vacuum heating, flash-zone separation, wash section, side draws and vacuum generation. The operating sequence, recycle paths, start-up/shutdown cases and normal/turndown behavior are defined before equipment finalization.
Vacuum furnace, vacuum column, ejectors/liquid-ring system, condensers, drums and pumps. Materials, design margins, maintainability, isolation, access, lifting and spare philosophy are coordinated with the approved operating cases.
Feed assay/composition, design capacity, operating pressure and temperature, product specifications, turndown, utilities, battery limits and site ambient conditions.
Vacuum-system design, column hydraulics, heater duty, wash-oil balance and equipment datasheets. The package also includes line/equipment lists, relief and utility summaries, layouts or 3D interfaces, vendor-document requirements, inspection plans and commissioning inputs as applicable.
DCS regulatory control, critical interlocks, relief and depressuring, gas/fire detection, hazardous-area classification, HAZOP actions and applicable SIS/ESD functions.
Feed preparation for FCC/HCU, base-oil routes and residue upgrading. Capacity, product quality, consumption and emissions commitments are confirmed only after the representative feed and project Design Basis are approved.
API 560, ASME, TEMA and refinery vacuum-service practices. The contractual code basis is selected by destination and client specification. ASME/API/TEMA, EN/DIN and GOST/EAC requirements are not mixed without an approved code-equivalency and authority review.
API 560, ASME, TEMA and refinery vacuum-service practices.