Patent ID: 11898102
Assignee: ZHEJIANG COMY ENVIRONMENT TECHNOLOGY CO., LTD
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 5:
6. The method for maximizing production of ethylene or propene according to claim 1, wherein a temperature at the top of the two-stage prewashing column is 100-200° C. and a pressure at the top of the two-stage prewashing column is 0.05-0.30 MPa; a temperature at a bottom of the two-stage prewashing column is 250-320° C., and in the section for desuperheating, the high-temperature oil and gas is cooled from a superheated state to a saturated state and dust carried by the high-temperature oil and gas is washed away, and the heavy distillate oil is obtained in the bottom of the two-stage prewashing column, the high-temperature oil and gas at a top of the two-stage prewashing column is cooled and enters a three-phase separator, the light distillate oil is discharged from a bottom of the three-phase separator, non-condensable gas are discharged from a top of the three-phase separator.