METHOD & PROCESS PRINCIPLE
Twin or multi-bed pressure-swing adsorption alternates adsorption and regeneration cycles.
BIOETHANOL PROCESS UNITS
Molecular-Sieve Dehydration
Removes water beyond the ethanol–water azeotrope to produce anhydrous ethanol.
MAIN EQUIPMENT & PACKAGE LIMITS
Molecular-sieve vessels, superheater, condenser, regeneration loop, valves, analyzers and product receiver.
CRITICAL DESIGN INPUTS
Feed composition, starch/sugar content, contaminants, daily capacity, alcohol grade, fermentation yield, water quality, enzyme/yeast basis and utility conditions. Required water content, cycle time, vapor condition and adsorbent performance.
ENGINEERING DELIVERABLES
Design Basis, material balance, PFD, P&ID, equipment and instrument datasheets, line/equipment lists, control narrative, cause-and-effect, layout/3D interfaces, inspection plan, operating and commissioning procedures.
AUTOMATION, SAFETY & HSE
Closed handling, relief/vent/drain routing, alarms and trips, hazardous-area classification, HAZOP actions, maintainable isolation, fire protection and emergency shutdown interfaces.
APPLICATIONS & PERFORMANCE BASIS
Fuel-grade anhydrous ethanol and low-water technical alcohol.
CODES, STANDARDS & QUALITY BASIS
ASME VIII, IEC/NFPA hazardous area, vendor adsorbent requirements and ASTM/EN/DIN/GOST water test methods.
CONTRACTUAL CODE BASIS
ASME VIII, IEC/NFPA hazardous area, vendor adsorbent requirements and ASTM/EN/DIN/GOST water test methods.