Influence of the Inherent Safety Principles on Quantitative Risk in Process Industry: Application of Genetic Algorithm Process Optimization (GAPO)

Table 2

Designed parameters applied for process optimization with genetic algorithm.

Input variable	Value
X1: temperature of stream 22-3 (°C)	−59.94
X2: molar flow of stream 22-8 (Kgmol/h)	293306
X3: molar flow of stream 22-15 (Kgmol/h)	129306
X4: temperature of stream 22–31 (°C)	−17.22
X5: temperature of stream 22–34 (°C)	−49.75
X6: boil up ratio	0.8012
X7: outlet pressure of expender	32.01
X8: pressure of top stage of column	31.51

Expander is assumed to work in the range of 95%∼105% of its normal capacity. Reflux Ratio is considered to be in the range of 65%∼110% of its normal flow rate.