PROCESS & OPERATING PHILOSOPHY
Feed/effluent exchange, reactor hydrogenation, separation and product stripping. The operating sequence, recycle paths, start-up/shutdown cases and normal/turndown behavior are defined before equipment finalization.
REFINERY UNITS
Naphtha Hydrotreating (NHT)
Removal of sulfur, nitrogen and contaminants before reforming or product blending.
MAIN EQUIPMENT & PACKAGE LIMITS
Charge heater, reactor, exchangers, separator, stripper, recycle-gas compressor and pumps. Materials, design margins, maintainability, isolation, access, lifting and spare philosophy are coordinated with the approved operating cases.
CRITICAL DESIGN INPUTS
Feed assay/composition, design capacity, operating pressure and temperature, product specifications, turndown, utilities, battery limits and site ambient conditions.
ENGINEERING DELIVERABLES
Reaction basis, catalyst loading, H&MB, PFD/P&ID, relief and control documentation. 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.
AUTOMATION, SAFETY & HSE
DCS regulatory control, critical interlocks, relief and depressuring, gas/fire detection, hazardous-area classification, HAZOP actions and applicable SIS/ESD functions.
APPLICATIONS & PERFORMANCE BASIS
CCR feed preparation and clean naphtha production. Capacity, product quality, consumption and emissions commitments are confirmed only after the representative feed and project Design Basis are approved.
CODES, STANDARDS & QUALITY BASIS
API, ASME, TEMA, catalyst licensor and hydrogen-service requirements. 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.
CONTRACTUAL CODE BASIS
API, ASME, TEMA, catalyst licensor and hydrogen-service requirements.