US815601A

US815601A - Apparatus for producing pure nitrogen.

Info

Publication number: US815601A
Application number: US17816303A
Authority: US
Inventors: Carl Linde
Original assignee: CHARLES F BRUSH
Current assignee: CHARLES F BRUSH
Priority date: 1903-10-22
Filing date: 1903-10-22
Publication date: 1906-03-20
Anticipated expiration: 1923-03-20

Description

No. 815,601. v l PATENTED MAR. 20, 190 65 v 011mm. A

APPARATUS FOR PRODUGING'PURB NITROGEN. APPLICATION rum) 001222.19.

A 12 is located in said pipe adjacent to cham- -ber 5 to regulate the passa e of-liquidair to as. will more y heremafter' ap-- siren; sT TEs .fPATENT .oFFi-on.

- CA L QLIINDE, or MUNICH,- GERMANY, ASSIGNOR or oivn-rrnnnro CHARLES E. BRUSH, or CLEVELAND, OHIO,

' APPA ATUS FOR-P ODUCING PURE NITROGEN. i

' Specification of Letters Patent. 1 Patented March 20, 1.906;

To all whomit may concern:

inzthe Kingdom of Bavaria, Germany, have invented certainnew and useful Improve My invention merits in -Apparatus for. Producing Pure Ni: trogen; and I do hereby declare-the-following to-be a'full, clear, and exactdescri ".tion of the invention,.such as will enable t ers skilled in the' art to which it usethe same.

appertains toniake and 7 longitudinal section, 1

'-1 repres'ents lined or walled to rovide insulation against pointed outin-the claims. P a

1 The. accompanyingl ments. 7 r v e g I a casing or receptaclesuitably heat and made wit a cylindrical inner partilmproved rectifying column -4, which is enehamber3 around-the same. I .Located in the casing 1 and'extending practically throughout the length thereof is my tion-wall 2 to provide a counter-current larged at its lower end, forminga chamber 5,

is provided throughout its length-with superposed trays to overflow'one into the next ower, orother form of obstruction or retarding means maybe provided in said col-- um, and for convenience in explanation of I my inventionl have desi natedlthe upper half of the column 6 and the lower ,half 7.

through a coil 9 in a coo g bath 10,;from which the pipe passes through'the countercurrent chamber 3 inthe form of a continu of column 4 whereit-is provided with a'nozzle. 1-1, projectin into 'columnand dischargvous coil 15 of many convolutions'and then en-' ters chamber 5 and iscoiled therein, as shown at i 21-. The ipe leaves the lower end of chamber 5 an passes up to about themiddle ing downward t erein, and a throttle-valve the column, rea

' Be it known that LOAeL LrNDE, of Munich,

, v relates to an-improved appazra tus for producing pure nitrogen, the obj ect j; of'the'invention being to produ-ce pure nitroi gen by 1'ractional distillation and rectification-jof liquefied atmospheric air; and withthis object in view the invention consists in drawing is a viewin' ustrating, my improve- Application filed 0ctober 22, 1903. Serial No. 178,163.

portion of chamber 5, has a throttle-valve 22 Ap'pe 13.communicates with the upper therein, and extends up to near the top of-- column 41 It enters said column and coils therein, as shown at 14, and then passes out 6o:

of the column and is coiled within the pipe 15,

as shown at 161, and'out at the top and communicates with a. suitable suction-pump 17.

a A pipel18 connects the top of. column 4 '1 with the bottom of counter-current'chambef g 3, and an outlet-pi e 19 communicates with communicates. with nozzle 1 1 to supply liquid air thereto in starting the apparatus and I to compensate for losses in wor 'The operation of my improvementsils as folloWsz-Air is com ressed b compressor 8 and cooled in the 00119 in bat 10 and enters the] coil in counter-current chamber 3, ex -o changing its temperature with the escaping" currents and liquefies in coil 21 in chamber 5.

e ,vapor passing up through the lower half tains about sixty per cent. oxygen it will escape through. the top of column 4 with put of co1umn4 incounter-current to the li uid hair descending, rectificationsets in, so t at while the vapor leaving the chamber 5 con- 5 seven per cent. oxygen. Pipe18 conveys this vapor to the counter-current chamber 3,1'r0m which it escapes through the outlet 19. The excess of l quid inchamber '5 is drawn up past valve 22 to coil 14 by means of'suctionpump 17, thus maintaining the liquid in 8 represents an air-com ressor to forceair vacuo. The rising vapors with seven per cent. oxygen exchange their heat with the place} so that the vapor esca'p I ing from the top of column-.4 will contain but o about two and one-half per cent. oxygen, and

by continued iopera-tion' of the apparatus finally pure nitrogen only escapes outof column 4 through counter-current chamber 3 and outlet 19.- The liquid vaporized in 'vacuo in coil 14 is'drawn through the inner used again,if desired.

pipe-coil 16' in chamber 3 and escapes or may the upper end of sald chamber 3. A pipe 20 Theair so liquefied'flows past valve 12 to v i A great many slight changes might be -made in the generalform and arrangement of the parts described without de arting from my invention, and hence I wou d have it understood that I do not confine myself to the precise details set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an apparatus for producing pure ni trogen, the combination of a rectifying-column, a liquefied gas-chamberat the bottom thereof, a nozzle discharging liquefied gas into-sald column between 1ts ends, means for carrying ofi the nitrogen at the top of said column, a pipe communicating with the liquid-chamber at the bottom of the column, and coiling in the upper portion of said column and means for drawing a quantity of a said liquid through the coil, whereby it is vaporized therein "in vacuo and a corresponding' qgiantity of the gas in said column liquefied y its contact with the metal walls of said coil. 4

' 2. In an apparatus for producing pure nitrogen, the combination with. a gas-compressor, a coil through which the gas is forced, means for cooling the coil and a counter-current chamber into which the cooled gas is conveyed, of a rectifying-0011111111, a chamber for liquefied gas at'the lower end of said column, a coil therein in which the gas from the counter-current chamber is liquefied and evaporates a corresponding (uantity of liquid in the liquid-chamber t 1e vapor from which ascends through the column, a pi e a the counter-current Cllfilllbtl'.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CARL LINDE.

Witnesses:

ABRAHAM ScnLEsIxGER, ANNI LUTHER.