US1843373A

US1843373A - Cut-off device

Info

Publication number: US1843373A
Application number: US287764A
Authority: US
Inventors: Lloyd F Schrader; Fred P Hart
Original assignee: Semet Solvay Engineering Corp
Current assignee: Semet Solvay Engineering Corp
Priority date: 1928-06-23
Filing date: 1928-06-23
Publication date: 1932-02-02
Anticipated expiration: 1949-02-02

Description

Patented Feb. 2, 1932 warren era-res mane ra'rsnr ea-rice LLOYD F. SCHRADER, OF RICHMOND HILL, AND FRED P. HART, OF WHITESTONE, NEW

YORK, ASSIGNOBS, BY LIESNE ASSIGNMENTS, T0 SEMET-SOLVAY ENG-INEEBINGOOR- FORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK GUT-OFF DEVICE Application filed June 23,

The invention provides an improved de vice for shutting 05 gas, especially applicable between the gas o'fi-take pipe and the collecting main of a coke oven battery.

The single figure of the drawing represents a vertical section of one embodiment of the invention. a

The gases from the distillation ovens o-r carbonized chambers pass upward through a pipe 1 with a cap 2 at the top. A downwardly inclined discharge pipe 3 leads out of the top of the riser 1 and carries at the top a spray pipe 4 which introduces cooling liquor into the gas. The pipe 3 is connected at its lower end to an extension 5 which forms a casing or pocket for a liquor seal and drainage valve. The end wall 6 of this casing abuts against the side of the collecting main 7 into which the gas is to be passed, the casing being fastened to the main by means of a flange 8.

In the upper part of the end wall 6 there is an opening 9 registering with an opening 10 in the main. At an intermediate point within the casing there is a downward projection from the upper wall in the form of a partition or plate 11 extending across the casing and downward to a level below the openings 9 and 10. The liquor from the spray will accumulate in the bottom of the casing 5 and rise to the level indicated at 12, after which it will overflow through the opening 9 without disturbing this level, thus maintaining a seal to cut off the passage of gas.

In the lower part of the casing 5 there is a tubular passage 13 communicating with the main through an opening 14 and adapted to communicate through a port 15 with the bottom of the casing. The port 15 is opened or closed by means or a drainage valve 16 operated by a stem 17 extending through the top of the casing and through a stufiing box 18 4 carried thereon.

While the valve 16 is held open, the liquor will drain out through the passage 13 into the main, leaving the larger passage clear through the openings 9 and 10 for the gas to flow freely. When the gas is to be cut oil the valve 16 is closed and the liquor will ac- 1928. Serial No. 287,764..

cumulate and form a seal to prevent the'gas from passing.

The passageway 13 has at its outer end a screw plug 19, the removal of which gives access for cleaning out any accumulated sediment from the liquor. r a

It will be noted that plug 19 is accessible from the outside of the casing and consequently ready access to the passage 13 may be had from the exterior of the casing for cleaning purposes.

Various other modifications may be made by those skilled in the art without departing from the invention as defined in the following claims: 7

1. A cut-01f for riser to a collecting main of a coke oven-battery comprising a casing having a lower end wall with an opening provided in its upper portion registering with an opening in the main and having a portion closing the upper part of said casing at a point spaced from said opening in said casing and projecting downwardly toa level below the bottom of said opening in said casing so as to maintain a liquid seal which prevents the passage of gas, said casing being provided with a separate passage communicating with another opening in the main and said separate passage being provided with a valve portthrough which the liquid can be drained off. a

2. A cut-ofi' for distillation gases from a riser to a collecting main of a coke oven battery comprising a casing having a lower end wall provided with'an' opening in its 'upper portion registering withan opening provided in the main and having a portionclosing the distillation gases from a r upper part of said casing at a point spaced from said opening in said casing and projecting from the upper wall down to a level be,

low the bottom of said opening in said casing said separate passage being provided witha valve port through which the liquid can be drained ofl", said separate passage being accessible from the outside of the casing for clean-- ing.

I we

her to a collecting main comprising a riser 3. Apparatus of the typedescribed which comprises a main for a coke oven battery, a riser having a connecting pipe joining said main, the connecting pipe being shaped to form a pocket adjacent said main in which liquid may collect, means to supply liquid to said pocket, said pocket being provided with an opening from the upper part of said pocke into said zniain for the admission of gas or the overflow of liquid, a partition extending from the top of said pocket to a distance below said opening to form a liquid seal closure when liquid has collected in said pocket to overflow through said opening and means for draining at will said liquid from said pocket into said main to open said liquid seal closure.

4. Gas ofltake apparatus which comprises, a main for a coke oven battery, a riser having a connecting pipe joining said main, the connecting pipe being shaped to form a pocket adjacent said main in which liquid may collect, means to supply liquid to said pocket, said pocket being provided with an opening extending from the upper part of said pocket into said main for the admission of gas or the overflow of liquid, a partition extending from the top of said pocket toa distance below said opening so as to maintain a liquid seal closure when liquid has collected in said pocket to overflow through said opening, said pocket being also provided with a drain opening extending from the lower part of said pocket into said main, and a valve for closing said opening.

5. A cut-oif for distillation gases from a riser to the collecting main of a coke oven battery comprising, a casing having a lower end wall with an opening in its upper portion registering with an opening in the main and having a portion closing the upper part of said casing at a point spaced from said opening in said casing and projecting down wardly to :a level below the bottom of said opening in said casing so as to maintain a liquid seal which prevents'the passage of gas through said casing, and means for draining the liquid from said casing to break said liquid seal.

6. A gas oflt-ake apparatus for conveying d stillation gases from a carbonizatiou-chamher to .a collecting main comprising, a pipe communicably connecting the carbon-ization chamber with said collector main for flow of gas from the carbonization chamber through said pipe into said collector main, means for introducing iquid into said pipe, a member in said pipe extending into the liquid so as to maintain a liquid seal for preventing the passage of gas through said pipe and means for draining the liquid from said pipe to permit flow of gas therethrough into the collector main.

7. A gas oflitake apparatus for conveying distillation gases froma carbonization chameeaeve pipe, receiving at its lower end the gases, a discharge pipe extending downwardly from the top of said riser pipe into said collector main and being shaped to form a pocket adj acent said main in which liquid may collect, a spray in said discharge pipe for spraying liquid into said pocket, said pocket being provided with an opening extending into the upper portion thereof and leading into said collector main for the admission of gas into said collector main or the overflow of liquid