US1255714A

US1255714A - Pressure-still.

Info

Publication number: US1255714A
Application number: US17090517A
Authority: US
Inventors: John J Curran
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-05-25
Filing date: 1917-05-25
Publication date: 1918-02-05
Anticipated expiration: 1935-02-05

Description

1.4. CURRAN.

PRESSURE STILL.

APPLICATION FILED MAY 25. 1917.

LjT/Mh l A Patented. F@b.5,1918.

3 SHEETS-SHEET 1.

Il uw N I@ melig I I V l@ UNCC g lq 'WITN ESSES ATTORNEY L J. CURRAN.

PRESSURE STILL.

APPLICATION FILED MAY 25, 1917.

Patented Feb. 5,1918.

3 SHEETS-SHEEI 2 CCCS INVENTOR WITN ESSES ATTO R N EY 1.1. CURRAN.

PRESSURE STILL.

APPLICATIQN FILED MAY 25. |917.

Patented Feb. 5, 1918.

3 SHEETS-SHEET 3.

mwm.

QQN INVENTOR Jfhwwj @Mmmm ATTORNEY JOHN' J'. CURRN, 0F AUGUSTA, KANSAS.

PRESSURE-STILL.

Specication of Letters Patent.

Patented lFelo. 5, 1913.

Application led May 25, 1917. Serial No. 170,905.

To all whom it may concern:

Be it known that I, JOHN J. CURRAN, a citizen of the United States residing at Augusta, in the county of Butler and State of Kansas, have invented a new and useful Pressure-Still, of which the following is a specification. i

This invention has reference to pressure stills for obtaining gasolene or benzene from gas oil, fuel' oil, and the like.

The invention comprises a battery of stills arranged to discharge into a separating tank and associated with the battery of stills is another still .receiving residuum from the separating tank for redistillation, the result being that there is a conservation of material and of energy employed 'in treating the material.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings vforming part of this speciication, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but maybe changed and modified, so long as such changes and modifications come within the scope of the appended claims.

In the drawings Figurel is a front elevation of the battery of stills, or tanks.

Fig. 2 is a rear elevation of thebattery of stills omitting the condensing tank and stack.

Fig. 3 is a planview of the battery of stills, the stack and the condensing tanks.

Fig. 4 is an end elevation with some parts broken away and in section.

` Fig. 5 is a longitudinal diametric ysection of one 0f the stills.

Referring to the drawings, there is shown a structurel which ma)7 be a. cement or other suitable building with a series ofl furnaces 2 therein. Dn'the cement structure 1 above each furnace is a still 3 of elongated cylindrical shape similar in conformation to an ordinary steam boiler so far as the outer shell is concerned. At suitable points each still 3 is provided with manholes 4 'which may follow the usual custom, but

which are only diagrammatically indicated in the drawings. Each still is also provided with gages 5, whereby an operator l may ascertain at any time the pressure conditions within the still.

At a suitable point adjacent t0 but spaced from the battery of stills is a drum 6 in which is located an upright series of hori zontal baille plates 7 through which are numerous perforations 8. It is desirable that the drum 6 be considerably elevated and higher than the stills 3, and, therefore, it may be supported by a tower 9 of any suitable construction, the drawings indicating a steel truss tower. The furnaces 2 all communicate with a stack 10 through suitable ues 11, l2, respectively, so as to dispose of the products of combustion pro duced in the furnaces.

There is also a condensing tank 13 for receiving the gas driven olf from the gas oil, and this tank is mounted on a suitable foundation 14. The tank 13 is of the usual construction employed in condensers and needs no particular description. The condensed gasolene or benzene may be collected in any suitable manner.

The stills 3 are shown as arranged in a group of ten, although as before stated such particular number is not obligatory. There is also another still 3i which may be mounted upon the same foundation 1 and is pro- .vided with a furnace 2a similar to the fur.- naces 2.

All the stills 3 communicate with a supply pipe 15 and all are rovided with outet pipes 16 each containing a valve 17, the outlet pipes 16 in turn communicating with other or trunk pipes 18 leading into the drum 6 at a point below the perforated baf- Hes 7. To the top of the drum 6 there is connected another pipe 19 which at the other end leads into the condenser tank 13 and contains a cut off valve 20. The drum 6 is arranged intermediately of the series of stills 3 and hence that still 3 midway of the length of the series has its pipe 16 directly entering the drum 6 instead of communieating therewith by way of the pipes 18. The pipe 15 enters the respective stills 3 through other ipes 21 which may be so arranged as to orce the oil into the still in the form of a spray. O y

-Each still has a steam pipe 22 entering 1t and provided with a coil or coils 23 entending along the bottom of the still within the latter.

The additional still 3a is similar to the lill) stills 3 except that the pipe 15 does not communicate With it. Instead of such an arrangement there is a pipe 24 leading from the bottom of the drum -6 into the top of the still 3a, and in this pipe there is interposed a cut off valve 25. Leading from the still 3a is another pipe 26 With a valve 27 therein and this pipe leads and opens into the tank 13, near which the pipe is pro- .v-ided With a valve 28 like the valve 20 in the pipe 19. The still 3l1 has manholes L and a ga e 5 like the other stills.

Gas oi is driven into the stills 3 in any suitable manner through the pipes 15 and 21, entering these stills in the form of a spray. Heat is generated in the furnaces 2 of the stills 3 and may be supplemented by superheated steam entering the stills through the

pipes

22 and 23. The heating is continued until about 150 pounds pressure, or even more, is produced in the'stills,

and then the valves 17 are opened and the gas is allowed to flow from the stills through the

pipes

16 and 18 into the drum 6, Where the light gases of benzene or gasolene pass through the pipe 19 and through the open valve 2O into the condenser 13 Where the gases may be condensed and Withdrawn. The heavier distillates pass through the pipe 24 and the then open valve 25 into the tank 3a in the form of tars or heavy liquids, and in this tank the heavy matters are again cracked by the heat provided, the lighter distillates passing through the pipe 26 by Way of the valves 27 and 28, which are then open, into the tank 13, thus adding to the accumulation of gasolene or benzene Withdrawn therefrom.

The steam pipes in the stills may be used for steaming out the stills, or, as before stated may be employed for directing superheated steam into the stills to help build up the pressure therein.

The final still 3a has the advantage of providing for a second cracking of the heavy residuum, thus saving the necessity of a separate tar s till and the loss of heat and time in directing the heavy distillates into such a separate tar still. The usual practice of pumping out the residuum to a tar still causes loss of all the heat and a considerable loss of time. By the process of.this invention it is feasible to recover the co-ke from the eleventh or last still and also save the light ends.

For instance, the stills permit obtaining about sixty-seven per cent. of benzene from each still and about twenty-eight vper cent. of coke in the last still. The run back from all the stills in the line is to the eleventh l still as common to the rst ten stills.

What is claimed is:- l .1. The combination .with a battery of stills, each having means for heating it,

means for feeding the material to be treatfor receiving distillates therefrom, of an additional still associated With the battery of stills and fed from the drum, said additional still having means forheating it, and condensing means into Which the drum and the last-named still deliver.

2. The combination with a battery of stills, each having means for heating it, means for feeding the material to be treated to the stills, and a drum common to the stills of the battery for receiving distillates therefrom and provided with perforated baliles to permit the rise therethrough of light distillates and the accumulation therein of heavy distillates, of an additional still associated with the battery of stills and having means for heating it, said additional.

still being in communication with the portion of the drum below the baiiies to receive heavy distillates collected in the drum.

3. Means for the production of light hydrocarbon liquid from 'gas oils, comprising a battery of stills and furnaces, and an additional still and furnace therefor associated with the battery of stills and furnaces, a feed pipe connected in common to all the stills of the battery of stills, a druim common to all the -stills of the battery of stills and connecting with each through a 'valved discharge pipe individual to the stil1,..said drum having means Within it for separating light and heavy distillates, condensing means for light hydrocarbon gases communicating with the drum, a valved pipe connecting the portion of the drum receiving the heavy distillates With the separate still, condensing means for the separate still and a valved pipe connecting the separate still and condensing still v means therefor, the drum being of a height With respectyto the separate still to permit gravitating of the heavy distillates from the drum to the still.

4. Means for the production of lighthydrocarbon liquid from gas oils, comprising a battery of stills and furnaces, and an additional still and furnace therefor associated with the battery of stills and furnaces, a feed pipe connected in common to all the stills of the battery of stills, a drum common to all the stills of the battery of stills and connecting with each still through a valved discharge pipe individual tothe still, said drum having means Within it for separating light and heavy distillates, condensing means for light hydrocarbon gases communicating with the drum, a valved pipe connecting the portion of the drum receiving the heavy distillates with the separate still, condensing means for the separate still and a valved pipe connecting the separate still and 'condensing means therefor, the as my own, ll have hereto affixed my signadrum being of a height with respect to the ture in the presence of tWo Witnesses. separate still to permit gravitating of the heavy distillates from the drum to thestill, JOHN J' CURRAN and all of the stills being provided with Witnesses: pipes for. directing steam thereinto. G. A. CLEMENTS,

In testimony, that I clalm the foregoing R. D. LAVENY.