METHOD FOR CREATING VACUUM IN APPARATUS FOR THE DISTILLATION OF PETROLEUM RAW MATERIALS Russian patent published in 2023 - IPC B01D3/16 C10G7/06 

FIELD: degassing; distillation; oil refining industry.

SUBSTANCE: invention relates to degassing methods for distillers during the distillation of oil refining residues and can be used in the oil refining industry. A degassing method for distillers during the distillation of petroleum raw materials is disclosed. The method includes pumping out from the distiller and compressing with partial condensation of a vapor-gas mixture containing low-boiling components, using a pump-ejector degassing system and a working fluid circulating through the office. At the same time, said circuit contains at least an ejector, a separator, a cooler and a high-pressure pump. A partial renewal of the working fluid is also carried out by removing its balance excess from the circulation circuit in the form of output flow. The stripping of the output flow is carried out using the circulation irrigation zone of the atmospheric column. The stripping product is removed by a side strip, and the working fluid is returned to the circulation circuit in the form of input flow. In this case, before stripping the output flow in the zone of circulating reflux of the atmospheric column, it is heated to the design temperature in the range between the input and output temperatures of the circulating reflux of the atmospheric column.

EFFECT: reducing the residual pressure in the distiller during the distillation of crude oil using a pump-ejector vacuum system and a circulating working fluid.

6 cl, 1 dwg, 1 tbl, 3 ex