Chemstations Dynamic Seminar Dynamic Behaviour of Regular Process

Chemstations Dynamic Seminar Dynamic Behaviour of Regular Process Operations John E Edwards P&I Design Ltd www. pidesign. co. uk

CRYOGENIC BATCH REACTOR DYNAMICOPTIMISATION SIMULATION POWER Dynamic Simulation without Control Systems • • • Develop dynamic simulation without control systems Equivalent to perfect control No special control system skills required Easier to set up in reduced time More effective use of the design team Correctly applied can avoid design errors Dynamic Simulation Basic Application • • Use dynamic simulation for basic design Time dependent parameters and hold ups Validates preliminary design concepts Equipment sizing Optimize the process design Test throughput change and shutdown Predict system performance and transient behaviour www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR REGULAR PROCESS OPERATIONS OPTIMISATION Typical Process Operations Process route select Perform batch process sequences Material transfer from tanker to storage Material transfer within a storage facility Storage tank heating Emergency relief sizing and behaviour Dynamic vessel and agitated batch reactor Batch distillation optimization Batch reactor design and performance Distillation column design and performance Equipment failure and hazardous analysis www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR PROCESS ROUTING OPTIMISATION www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR ROUTE SELECT TECHNIQUE OPTIMISATION RAMP and FEEDFOWARD CONTROLLER • Ramp controls the stream selection over time • Feedforward controller sets divider stream selection • Dummy stream set at zero to stop route flow www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR PROCESSOPTIMISATION ROUTING BENEFITS Benefits • Allows the study of material transfers • Design of pump and piping systems in real situations • Batch distillation cut control www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR MIXING VESSEL SEQUENCE CONTROL OPTIMISATION Detailed Process Operations 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Fill tank to a preset level Remove water to level through screens to retain the solid product Add hot wash water and mix Drain to low level again Repeat steps 3 and 4 Refill the tank with hot water to the original level Inject live steam to heat at a certain rate to a soak temperature Hold for a period of time Recirculate through a heat exchanger to cool the tank Transfer the contents to the next step in the process www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR MIXING VESSEL SEQUENCE CONTROL OPTIMISATION www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR ROAD/RAILOPTIMISATION TANKER TO STORAGE www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR BITUMEN STORAGE TANK HEATING OPTIMISATION www. chemstations. net www. chemstations. com www. chemcad. co. uk

C CRYOGENIC BATCH REACTOR STORAGE TANKER DIURNAL EMISSION OPTIMISATION Current Run Time www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR ROAD/RAILOPTIMISATION TANKER TO STORAGE www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR STORAGE TANK EMISSION PREDICTION OPTIMISATION Emission Prediction 1. 2. 3. 4. 5. 6. Site emission reporting is a legal requirement Government legislation required Simulation readily adapted to geographical conditions Adapting operational procedures to minimise emissions Heat inputs calculated in Excel to comply with accepted methods Easy to apply and flexible for wide range of components and procedures www. chemstations. net www. chemstations. com www. chemcad. co. uk

CRYOGENIC BATCH REACTOR CONCLUSIONS OPTIMISATION Dynamic Simulation without Control Systems 1. 2. 3. 4. 5. 6. No special control system skills required Applies standard process engineering techniques Easier to set up in less time Applicable to a wide range of process activities Aids initial design development Control systems added after finalised design www. chemstations. net www. chemstations. com www. chemcad. co. uk