The utilization of new energy sources

 Process flowchart of crude oil treatment

First-line oil flows from the 30th or 32th tray into the upper stage (Column-103) of the atmospheric stripping tower, then it is pumped into heat exchanger and heated up to 45℃, and after flowing into the diesel alkali-washing or water-washing ionizer (Volumn-111) combined with second-line oil for electrochemical treating, the stripping oil gas returns to the 33rd tray of the atmospheric column.

Second-line oil flows into the middle stage of the stripping tower from the 18th or 20th tray of the atmospheric column and then it is cooled down to 60～70℃ by the heat exchanger and condenser. After flowing into the diesel alkali-washing or water-washing ionizer (Volumn-111) combined with first-line oil for electrochemical treating, the stripping oil gas returns to the 21st tray of the atmospheric column.

Third-line oil flows into the bottom stage of the stripping tower from the 8th or 10th tray of the atmospheric column and then enters into the mixed heavy oil equipment after being cooled down to 70℃ by the heat exchanger and condenser. Then the stripping oil gas returns to the 12th tray of the atmospheric column.

Fourth-line oil is drawn directly from the 5th tray of the atmospheric tower and enters into the stripper tower combined with the third-line oil.

The heat exchanger applied in the process

First-line oil heat exchanger: the primary distilled oil which is heated up to 370-380℃ by the atmosphere furnace flows into the first-line oil heat exchanger and is cooled down to 45℃.

Second-line oil heat exchanger: the primary distilled oil which is heated up to 370-380℃ by the atmosphere furnace flows into the second-line oil heat exchanger and is cooled down to 60-70℃.

Third-line oil heat exchanger: the primary distilled oil which is heated up to 370-380℃ by the atmosphere furnace flows into the third-line oil heat exchanger and is cooled down to 70℃.

Relevant physical parameters and introduction of atmospheric tower

Due to the high viscosity of crude oil, generally use plates with deep corrugation. Due to the unstable temperature of the chemical system temperature of the system, adopt the fully-welded type for the heat exchanger with the temperature of over 100℃, otherwise the detachable plate heat exchanger with the EPDM gasket.