US1383024A

US1383024A - Rerun-still

Info

Publication number: US1383024A
Application number: US321730A
Authority: US
Inventors: Pyzel Daniel
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-09-04
Filing date: 1919-09-04
Publication date: 1921-06-28
Anticipated expiration: 1938-06-28

Description

D. PYZEL.

HERUN STILL.

APPLICATION FILED SEPT. 4, 1919.

Patented June 28, 1921. 2 SHEETS-SHEET I Gow@ wwww/O ..ooQwQ Q o G a H ,w I .W QM ON J/ INVENTOR.

DA /v/EL. Ds/zel.,

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jaw/T Q A TTORNE Y.

D. PYZEL RERUN STILL.

APPLICATION man sEPT.4.1919.

Patented June 28, 1921.

2 SHEETS-SHEET 2.

INVENTOR.

DAN/EL. PYZEL,

' BY l Y 4a/y wfw ATTORNEY.

DANIEL '.PYZEL, OF OAKLAND, CALIFORNIA.

RERUN-STILL.

Specification of Letters Patent. Pafented June 28, 1921.

Application led September 4, 1919. Serial No. 321,730.

fining petroleum oils, and the principal object of the invention is to provide an apparatus by which distillate having a very narrow boiling range may be produced. It is common practice in the art of distilling petroleum to take off from the crude oil a considerable number of different products which differ primarily in their boiling points. ',Ihese products have commercial names such as gasolene, kerosene, etc., and it is highly desirable that the separation should be quite complete, that is to say, it is desirable that kerosene should contain no gasolene or vice versa.

My invention applies to those processes in which the crude petroleum is first topped, that is to say, in which all of its constituents which will vaporize at or above a certain boiling point are taken off together, the tops so produced containing gasolene, kerosene and various other products. These tops which are taken off from the primary still in the form of vapor are then condensed and subjected to fractional distillation to divide them into the various desired' commercial products.

My invention comprises a re-run still which is especially adapted to the redistillation of such tops for the purpose of separating them into the various desired 'commercial products.

Further objects and advantages will be set forth more in detail hereinafter.

Referring'to the drawings which are for illustrative purposes only,

Figure 1 is a vertical section through a .preferred form of my invention, portions thereof being broken away to better illustrate the internal structure.- .l

' Fig. 2 is a section on an enlarged scale on a plane represented by the line 2 2 of Fig. 1.

Fig. 3 is a diagrammatic View showing the application of my invention to a system of refining.

The re-run still shown in Figs. 1 and 2 consists of a cylindrical shell 11 which is secured by means of angle iron anges 13 at elther end to heads 14. These heads are formed of two plates separated by spacing Washers 15 and clamped together by boltsl. Extensions 17 of the shell 11 are also secured to the heads 14, these extensions 17 being closed by ends 18. Secured in the heads 14 and extending through the space between these heads, which is hereinafter referred to as the distilling chamber, is a series of tubes 20, these tubes being made oil and gas tight in the heads 14 and connecting with the spaces outside these heads. The tubes 20 are preferably placed below a horizontal diameter (1f-a as shown in Fig. 2, a series of partitions 21 being secured inside the shell 11, and extending across above the tubes 20 to form a series of progressive spaces. Each of these spaces is provided with a vapor outlet connection 22 and with a perforated steam pipe 23, this pipe passing through a reducer 24 and extending along the bottom of the shell 11, being provided with perforations 25 through which the steam is injected into the oil. Hand holes 27 are also provided in the top of the shell 11 over each of the spaces. A condensate inlet 30 is provided in the shell 11 Vat the inlet end of the distilling chamber, anda condensate outlet 31 is provided in the shell 11 at the outlet end of the distilling chamber. A residuum inlet 33 is provided in the shell 11 for one of the spaces outside of the heads 14, a residuum outlet 34 being provided for the other space.

The method of operation'is as follows:

The condensate is admitted through the inlet 30', iiowing from left to right as in Fig. 1 through the distilling chamber in which it is subjected to the action of heat due to hot fluid in the tubes 20 and due to the injection of steam through the perforations 25. Due to the application of heat, vapor is produced which rises into the proressive spaces between the partitions 21.

his vapor is taken off through the'vapor taken off at the last of these spaces may not boil until it is heated to 200 F. The

outlets 22. As the oil Hows longitudinally dierent products or cuts, as they are called, `are taken olf to condensers, not shown, in which the final product is con- ToY better illustrate this method of operation, I have prepared the diagram, Fig. 3, which shows diagrammatically a refinery in which 51 is a pipe still, 52 is a vapor separator, 53 is a condenser, 54 is a pump, and 55 is the re-run still just described. The

raw oil is delivered through a pipe 60 to the' pump 54, being forced by this pump through a series of coils 61 in the still 51 where it is subjected to the action of heat, the heated oil with its included vapor being delivered to the top of the vapor separator 52 and passing downwardly therethrough. The oil is forced outwardly by a series of cones 62, the. vapor passing inwardly and passing through perforations 63 into a pipe 64, being delivered through a pipe 65 to the condenser 53, in which it is subjected to the action of cold water carried in tubes 66. The uncondensed vapor is withdrawn through apipe 67 and the condensates aire delivered through a pipe 68 to the condensate inlet 30 of the re-run still 55. The hot residuum from the vapor separator 52'is delivered through a pipe 69 to the residuum inlet 33. This hot residuum passes through the tubes 20, giving up a portion of its heat to the condensate and passingy outwardly through aresiduum outlet pipe 70." The various cuts are delivered through

pipes

71, 72 and 73 to suitable condensers not'shown, the unvaporized portion of the condensate being delivered through a pipe 74 which extends up inside the still 55 to a point just abofe the lower edges of the partitions 21 so that lthe lower edges of thesepartitions are always l submerged and the spaces betweeny the partitions are isolated.

I claim as my invention j .1. A re-run still comprising a shell having closed ends, two heads intermediate of said ends forming, with that portion of the shell between said heads. a distilling. chamber, a series of tubes tightly secured in said heads and extending through said distilling chamber in the .lower part thereof, means for delivering hot residuum to the space outside said distilling chamber and inside one end of said shell so that said residuum can flow through said tubes. means for withdrawing said residuum from the space outside the oppositeend of said distilling chamber and inside said shell, means for injecting steam into the bottom of said distilling chamber, means for delivering the cylindrical fluid to be distilled tothe inlet end of said distilling chamber, a series of partitions extending across said distilling chamber-above said tubes,.means for withdrawing vapors from each of the progressive spaces between said partitions, and means for withdrawing unvaporized liquid from/ the outlet end of said distilling chamber.

2. A re-run still comprising a cylindrical shell having closed ends, two heads intermediate of said ends forming, with that portion of the shell between said heads, distilling chamber, a series of tubes tightly secured in said heads and extending through said distilling chamber in the lower part thereof, means for delivering hot residuum to the space outside said distilling chamber and inside one end of said shell so that said residuum can flow through said tubes, means for withdrawing' said residuum from the space outside the opposite end of said distilling chamber and insidesaid shell, means for delivering the iiuid to be distilled to the inlet end of said distilling chamber, a series of partitions extending across said distilling chamber above said tube-s, means for withdrawing vapors :trom each of the progressive spaces between said partitions, and ,means for withdrawing unvaporized liquid from the outlet end of said distilling chamber.

3. A re-run still comprising a cylindrical shell having closed ends, two heads intermediate of said ends forming, with that portion of the shell between said heads, a distilling chamber, a series of tubes tightly secured in said heads and extending through said distilling chamber in the lower part thereof, means for delivering hot residuum to the space outside said distilling chamber and inside one end of said shell so that said residuum can flow through' said tubes, means for withdrawing said residuum from the space outside the opposite end of said distilling chamber and inside said shell,means for delivering the fluid to be distilled to the inlet end of said distilling chamber, a series of partitions'extending across said distilling chamber abovev said tubes, meansl for withdrawing vapors'from each of the progressive spaces between-said partitions, a series of steam pipes, each steam pipe extending into said distilling chamber below one of said progressive spaces, and means for withdrawing unvaporized liquid from the outlet end of said distilling-chamber.

1n testimon whereof, have hereunto set my hand at an'Francisco, California. this 22nd day of August, 1919.

j DANIEL PYZEL.