US989982A - Evaporator. - Google Patents

Description

P. KESTNER.

EVAPORATOR.

APPLICATION FILED JUNE 20, 1910. 989,982, Patented Apr. 18, 1911.

- UNITED STATES PATENT OFFICE.

. PAUL KESTNER, OF LILLE, FRANCE.

EVAPORATOR.

To all whom it may concern:

Be it known that 1, PAUL Knsrnnn, a citizen of the Republic of France, and a resident of L'ille, Department of the Nord,

France, have invented certain Improvements in Evaporators, of which the following is a specification.

My invention relates to evaporating apparatus, and the object of my invention is to provide apparatus of the long vertical tube or climbing film type with means at .the

upper end of the shell carrying the tubes and into which such tubes discharge for effectually sc 'iarating vapor or steam from the liquid under treatment.

An important feature of my improvement consists in disposing the separator so as to surround the upper portion of the tubes in in the accompanying drawings, in which:

l' igure 1, is a sectional elevation of one form of apparat us embodying my invention; Fig. 2, is a sectional plan view on the line aa, Fig. 1; Fig. 3, is a view similar .to Fig.

i 1, of another form of apparatus embodying lowertube plate 4, and may be suitably so my invention; Fig. 4, is a sectional plan View on theline 6-4 Fig. 3; Fig. 5, is a sectional plan view on the line c-c, Fig. 1, and Fig. 6, is a sectional view illustrating a modified detail of my invention.

In Figs. 1 and 2 of the drawings, 1 represents a shell or casing inclosing a series Off long tubes 2, which extend from an inlet at the bottom ofthe structure through a cured in an upper tube plate Steam or other heating medium is admitted to the shell or casing 1 at the point 6 and the water of condensation may be drawn oil in any suitable manner. 7 represents a separating chamber disposed at the upper part of the apparatus and which may be formed by a shell or wall 8 having top and bottom plates 9 and 10; and. the top plate nay have a central aperture 11 directly over the tubes, which may be normally closed by a cover plate 12. In some instances the structure Specification of Letters Patent.

I Application filed June 20, 1910. Serial No. 567,957.

Patented Apr. 18, 1911.

forming the separating chamber may be an integral element. The lower or bottom plate '10 is suitably secured to the shell 1, and carries an outlet 13 for the concentrated liquid and an outlet 14 for the vapor sepa rated from said liquid. Disposed within the separating chamber and surrounding the shell 1, is a wall 15 which may rise to a point approximately midway between the upper and lower plates of the separating chamber, and depending from the top of the shell 1 is a wall 16 which may be inclined and have its lower edge turned to form a gutter 17; such wall ltl extending over the annular wall 15. Between the upper tube sheet and the top of the separating chamber, I may provide a series of tangential openings 18 through which the liquid coming from the tubes is discharged and given a centrifugal or whirling motion within the separating chamber, etl'ecting the breaking'up of the liquid and liberation of the vapor, the liquid falling to the bottom of the separating chamber where it is discharged through the opening 13, while the vapor passes under the overhanging inclined wall 16 and enters the space between the wall 15 and the shell 1, finally discharging through the outlet 14. The passages for the tangential discharge of liquid passing from the tubes maybe formed in a suitable casting disposed between the cover plate 12 and the upper tube sheet, and in some instances such casting may be socured to the. cover plate, and in others 'tornici l integral therewith so as to be bodily removable with said cover plate it desired; such removal of the cover plate being necessary when the tubes are to be examined.

In the structure shown in Figs. 3 and 4, the vapor outlet ll is disposed in the upper portion of the separator chamber, and a wall 15 within the chamber, which may be annular and is cut away at its lower side at .a point opposite the vapor outlet, as at 19, may be provided. In this form of the structure. the liquid discharged through the tangential openings strikes the inner surface of this annular wall and falls to the bottom of the. separating chamber, being dis charged through a suitable liquid aperture 13", while the vapor separated therefrom rises from said liquid and passesfrom the ooening 19 in said wall to the discharge outlet 14" of the separating chamber. The

liquid outlet 13 is shown as disposed below the cutaway portion of the wall 15, and while this is preferred, such arrangement is not essential to the proper operation of the apparatus.

In the structure shown in Figs. 1 and 2,

the wall 15 forms a chamber or passage surrounding the upper portion of the tube sheet into which the vapor must pass before it is discharged. Entrained liquid is prevented from entering with the vapor by reason of the overhanging portion of the inclined wall 16. The gutter carried by this inclined wall may be perforated for the escape of the .liquid caught thereby, if desired, and in some instances such gutter may be omitted.

- I .claim:

1. In an evaporator of the climbing film type provided with vertical tubes, a casing inclosing said tubes to which a heating medium is introduced, a vapor casing encircling the top of the evaporator and having a;

liquid exit at its lowest point, a vapor exit conduit opening into the chamber casing at a higher point, and a depending wall within type provided name to this specification in the pathway between said tangential dis charge and said vapor exit means.

3. In an evaporator of the climbin film with vertical heated tn?) vapor separating head comprising a casing encircling the top of the apparatus, said casing beingprovided with vapor and liquid discharge outlets, conduit forming means es, a-

within the casing comprising an annular wall forming a passage leading to the vapor outlet and having an inletat a higher level than the level of the liquid outlet, anda vertically depending shield surronnding the tube casing and protecting such inlet. I

4. In an evaporator of thelelimbin .film type provided with vertical heated tu es, a heating shell containingsaid tubes, a vapor separating head comprising a casing en-v circling the top of the apparatus, said casing being provided with vapor and liquid discharge outlets, a supplemental shell surrounding the heating shell' and forming a conduit within the casing'leading to the vapor outlet and having an inlet intermediate the top and bottom of the separat ing chamber, and a vertically depending shield surrounding said heating shell below the tube outlets and protecting such inlet,

said vapor outlet being below the liquid outlet. v v

In testimony whereof, I have signed my the presence of two subscribing witnesses.

PAUL KESTNEB, Witnesses:

HENRI CHABRIER, TnfioN Pnoxnn,

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