PROCESS & OPERATING PHILOSOPHY
Claus reaction furnace, catalytic conversion, sulfur condensation and degassing. The operating sequence, recycle paths, start-up/shutdown cases and normal/turndown behavior are defined before equipment finalization.
REFINERY UNITS
Sulfur Recovery Unit (SRU)
Conversion of acid-gas H₂S into elemental sulfur with tail-gas handling as required.
MAIN EQUIPMENT & PACKAGE LIMITS
Reaction furnace, waste-heat boiler, converters, condensers, incinerator/TGTU and sulfur pit. 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
Acid-gas basis, recovery calculation, thermal design, safeguards and emissions/performance test. 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
Refineries, gas plants and sour-gas processing facilities. 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, NFPA, environmental emissions and licensor 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, NFPA, environmental emissions and licensor requirements.