US1751731A

US1751731A - Process of treating hydrocarbon oil

Info

Publication number: US1751731A
Application number: US669929A
Authority: US
Inventors: Egloff Gustav
Original assignee: Universal Oil Products Co
Current assignee: Universal Oil Products Co
Priority date: 1923-10-22
Filing date: 1923-10-22
Publication date: 1930-03-25
Anticipated expiration: 1947-03-25

Description

G. EGLOFF March 25, 1930.

PROCESS OF TREATING HYDROCARBON OIL Original Filed Oct. 22, 1923 Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE GUSTAV EGLOFF, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNIVERSAL OIL PRODUCTS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA.

PROCESS OF TREATING HYDROCARBON OIL Application filed October 22, 1923, Serial No. 069,929. Renewed January 12, 1929.

This invention relates to improvements in treating hyrocarbon oils, and. refers more particularly to the method of handling the vapors generated from the cracking of petroleum oil, which petroleum oils are of an emulsified nature.

Certain petroleum oils of an asphalticbase,

as for example, certain oils from the fields ad acent Long Beach, California, are highly emulsified, yielding upon distillation gasoline emulsified with water and ofa cherrylike consistency. As far as I am aware this type of distillate has not yielded sufficiently to treatment and isat present a waste product. To overcome this difiiculty is the main purpose of the present invention.

I overcome this ditficulty by the fractional condensation of the gaseous water and gasoline vapors, maintaining a condenser at approximately 215 F. and under about 100 7 pound pressure so-that the steam and very lowboiling point gasoline will condense together in a subsequent condenser with the emulsifying agent.

The material condensed in such first condenser passes to a cooler while the vapors which are not condensed in the first condenser pass to a second condenser, where Stratification of water and gasoline takes place.

The invention will be understood from the following description, reference being had to the accompanying drawing in which the single figure represents a somewhat diagrammatic side elevation and vertical section of an appara-tus suitable for carrying out the invention.

Referring to the drawings (1) designates the furnace, in which is mounted the heating element (2) which may take the form of a spaced pans (5) and baifies (6). The heaviest vapors will be condensed and drawn 05 near the bottom of theedephlegmator through pipe (7) and control valve (8) leadingmto I e as coil (17). This condenser coil (17) may be maintained at a temperature of say 215 F. 5 and under a pressure of say 100 pounds more or less by suitably controlling the valves (18) and (19). The material which condenses in the primary condenser (17) which will be the bulk of water and the heavier vapors pass out 70 through pipe (20) and trap (21) into the cooler (22), the outlet of which is controlled by valve (23). The uncondensed vapors pass out through pipe (24 to condenser (25), the outlet of which is controlled by 7e valve (26).

p The cooler (22) and condenser (25) may be maintained at a temperature of say F. more or less. The arrangement is such that the uncondensible gases an'dthe vapors which '30 are not condensed in the primary condenser (17 will pass into the second condenser (25) while only liquid will enter the cooler (22,). It is very probable that by preventing the gases and uncondensedvapors from entering 86 the cooler (22) that the tendency to re-emulsification of the bulk of the water and oil, which is in the cooler (22), will be avoided. .VVhile the exact nature ofthese reactions which tend to cause re-emulsification is not known, nevertheless it has been foundthat slight differences in the handling of these emuslified oils produce substantial differences in their commercial treatment.

By means of the present invention the emulsifying'agent, or suchgases or vapors as tend to more readily emulsify .are separated from the bulk of. the water and re-emulsification thus prevented;

I claim as my invention:

1. A process of treating petroleum oil of an emulsified character, consisting in subjecting such oil to cracking conditions of temperature and pressure, in subjecting the vapors evolved from the oil to dephlegmation, in passing the uncondensed oil and water vapors through a primary condenser maintained at a temperature of substantially 215 F. and under a pressure of substantially a hundred pounds to the square inch, to condense the bulk of such oil and water vapors, in passing the resulting condensate directly through a cooling zone, in withdrawing the uncondensed vapors and gases from said primary condenser without admitting the same to said cooling zone, in subjecting such uncondensed vapors and gases to a further condensing action, and in taking as the material from said condensing zone in a de-emulsified form.

2. A rocess of treating petroleum oil of an emulsified character, consisting in heating the oil to a cracking temperature under superatmospheric pressure, in subjecting the vapors evolved from the oil to reflux condensation, in passing the uncondensed oil and water vapors through a primary condenser maintained under superatmospheric pressure, and at a temperature below the boiling point of water at the pressure on the condenser, but above the boiling point of water for atmospheric pressure, to condense the greater part of such oil and water vapors, in passing the resulting condensate directly through a cooling zone, in withdrawing the uncondensed vapors and gases from said primary condenser without admitting the same to said cooling zone, in

subjecting such uncondensed vapors and gases to a further condensing action, and in taking off the material from said condensmg zone in a de-emulsified form. 3. A process of treating petroleum oils of an emulsified character, consisting in heating the oil to a cracking temperature under superatmospheric pressure, passing the vapors evolved from the oil to a zone of dephlegmation, passing 'the'uncondensed oily and watery vapors therefrom through a primary condenser maintained under superatmospheric ressure, and at a temperature below the boi 'n point of water at that pressure, passing the condensate through a cooling zone, withdrawing the uncondensable gases and uncondensed vapors from the primary condenser and subjecting them to further cooling.

4. A process of treating petroleum oils of an emulsified character, consisting in heating the oil to a cracking temperature, passing vapors therefrom to a zone of dephlegmation in which vapors of a heavier fraction and an intermediate fraction are condensed, separately withdrawing and cooling said fractions, passing the uncondensed vaporous and gaseous products from said zone of dephlegmation to a primary condenser maintained at a temperature above the atmospheric boiling temperature of water, and'under superatmos.