Title:
MALTIISTAGE EVAPORATOR AND PETROLIUM DISTILLING METHOD
Document Type and Number:
Japanese Patent JPS52121607
Kind Code:
A
Abstract:
A method and apparatus for separating a predetermined fraction from a crude oil includes preheating the crude oil to vaporize a portion, and feeding the two-phase crude to a first stage flash evaporator. In the first stage evaporator, a vapor portion is separated from residual liquid and the residual liquid is used by means of heat exchange to preheat the crude oil. The vapor fraction from the first stage evaporator has an approximate 90% ASTM distillation temperature about 50-60 DEG F higher than the first stage evaporator temperature. The vapor fraction is condensed to form a condensate, and the condensate is conveyed to a stripping column for mass transfer with ascending vapors from a second stage boiling type evaporator. The second stage evaporator is operated at a vaporization temperature approximately equal to the 5% ASTM vaporization temperature of the predetermined petroleum fraction collected as liquid from the second stage evaporator. Vapors removed from the stripping column include a crude oil fraction having an ASTM flash temperature lower than the temperature of operation of the second stage, and crude oil volatile impurities.
Inventors:
CHIYAARUZU DEI ROOZU
FUREDERITSUKU DABURIYUU GIRUBA
FUREDERITSUKU DABURIYUU GIRUBA
Application Number:
JP3697777A
Publication Date:
October 13, 1977
Filing Date:
April 02, 1977
Export Citation:
Assignee:
RILEY BEAIRD
International Classes:
B01D3/06; C10G7/00; (IPC1-7): C10G7/00