OIL AND PETROLEUM PRODUCTS REFINING PLANT Russian patent published in 2004 - IPC

FIELD: petrochemical industry; plants for distillation of complex high-boiling fluids for separation of oil and petroleum products into fractions. SUBSTANCE: proposed plant ensures avoidance of thermal decomposition of oil raw material and forming of coke in heaters and complete extraction of highly volatile components at each stage due to increased duration of presence of products under periodic heating conditions. Proposed plant consists of several stages interconnected in succession; each stage has heater for oil raw material, separator for separation of vapor mixture from liquid residue and condenser for vapor mixture; each stage is additionally provided with pump whose suction branch pipe is connected with lower portion of separator by means of pipe line for reception of liquid residue; discharge branch pipe of said pump is connected with additional heater of this stage and is communicated with separator for return of product being heated, thus forming closed circulating loop; part of product in form of liquid residue is taken from circulating loop after pump and is directed to next stage for subsequent separation into phases. EFFECT: enhanced efficiency. 1 dwg