US3556948A

US3556948A - Ascension pipe elbow with plural spray nozzles

Info

Publication number: US3556948A
Application number: US784638A
Authority: US
Inventors: Raymond C Kinzler; Gilbert C Nestler
Original assignee: Koppers Co Inc
Current assignee: Raymond Kaiser Engineers Inc
Priority date: 1968-12-18
Filing date: 1968-12-18
Publication date: 1971-01-19
Anticipated expiration: 1988-01-19
Also published as: DE1959791A1; FR2026408A1

Abstract

AN ASCENSION PIPE ELBOW IS PROVIDED WITH SPRAY NOZZLE CONNECTIONS WHICH ARE DIAMETRICALLY OPPOSED AND WHICH LIE IN A PLANE THAT IS PERPENDICULAR TO A VERTICAL PLANE THROUGH THE ELBOW. THE SPRAYS FROM THE NOZZLES ARE DIRECTED TOWARD AN ELBOW EXTENSION LEADING INTO A GAS COLLECTING MAIN. LIQUID SPRAYED FROM THE NOZZLE COATS THE INTERIOR SURFACE OF THE ELBOW.

Description

Jun. 19, 1971 Q K|NZLER ETAL 3,556,9$8

. ASCENS ION PIPE ELBOW WITH PLURAL SPRAY'NOZZLES Filed Dec. 18, 1968 INVENTORc RAYMOND c. k/NZLER 4! GILBERT c. IV-STLER BY SZWMW United States PatentOf *4 Claims ABSTRACT OF THE DISCLOSURE An ascension pipe elbow is provided with spray nozzle connections which are diametrically opposed .and which lie in a plane. that is perpendicular to' a vertical'uplane through the elbow. The sprays from the nozzles are directed toward an elbow extension leadinginto a gas collecting main. Liquid sprayed from the nozzle coats the interior surface of the elbow.

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of application Ser. No. 583,376, filed Sept. 30, 1966, now Pat No. 3,480,514.

BACKGROUND OF THE INVENTION This invention relates to coke ovens and, more particularly, to spray devices for applying flushing liquor to the interior of a gooseneck elbow of the standpipe or ascension pipe of a coke oven chamber.

The usual coke oven is equipped with one or more standpipes or ascension pipes for each coking chamber, that carries the volatile products released from the coal during coking to one or more collecting mains extending along the sides of the coke oven battery. In passing from the ascension pipe into the collecting main, the gases flow through a gooseneck elbow and an elbow extension which terminates usually inside the collecting main.

The flowing gases are generally cooled by spraying flushing liquor into the ascension pipe elbow, and such spraying wets the interior surfaces of the elbow to prevent a buildup of tarry deposits on the inside surface of the elbow and the elbow extension.

Heretofore, ascension pipe elbows have been equipped with one or two spray nozzles that have been located in the top of the elbow; that is, the one or two nozzles lie generally in the vertical central plane of the elbow. Such an arrangement of spray nozzles has not proved to be entirely satisfactory, because a large accumulation and buildup of tarry encrustations continues to form on the inside surface of the elbow. This necessitates the use of a mechanical tool or other device to clean such encrustation from the interior surface of the elbow.

How the equipment of the present invention effectively prevents an accumulation of tarry deposits on the interior surfaces of the gooseneck elbow will be apparent to those skilled in the art from the following description and drawings illustrating a preferred embodiment of the invention.

SUMMARY OF THE INVENTION In an ascension pipe elbow, a pair of opposed liquid spray nozzles are arranged in a plane that is perpendicular to the plane of the elbow, with the sprays directed toward the gas collecting main.

3,556,948 Patented Jan. 19, ran

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BRIEF DESCRIPTION OF'TH'Ef DRAWING A preferred embodimentof theinven'tion is illustrated in the drawing wherein: a I

FIG. 1 is a schematic'elevational view of an asce'nsion pipe elbow including. apparatus inaccordance with the invention; and

'FIG. 2 is a view along line II-II of DETAIL-ED DESCRIPTION FIG. 1 illustrates an ascension pipe elbow 11 which is provided with a flange that is bolted in the usual manner to the topflange 15 of a standpipe or ascension pipe 17. The ascension pipe '17 is lined with "-suitabl 'r'efr actory material 19' ina usual manner, and -the ascension pipe 17 communicates with a coking chamber to 'carryaway gases generated while coking coal in the coking chamber.

The ascensions pipe elbow 11 includes a vertical first main tubular portion 21 to which-the flange 13 is attached, and a lateral second tubular portion 23 that branches off from the first main tubular portion 21 and that connects to an elbow extension 24 extending into a gas collecting main 25 of usual construction.

While the ascension pipe elbow 11 is shown in the drawing as a one piece unit, it will be understood that, in some instances, the elbow 11, and particularly, the lateral second tubular portion 23 may be made in two sections suitably secured together.

A conventional access opening 27 is provided'in the top of the first tubular portion 21, and a conventional pivoted cover 29 is hinged to the :first tubular portion 21,

' as at 31. The cover 29 may be opened to admit a cleaning tool into the elbow 11 as desired or as necessary.

The lateral second tubular portion 23 is provided with two opposed side bosses 33, 35 (FIG. 2) each of which has a threaded opening 37 into which is threaded a spray nozzle assembly 39.

The spray nozzle assembly 39 is made up of conventional elements such as a nozzle 41, tubular fittings 43, and a fluid conduit 45.

The threaded openings 37 and the nozzles 41 cooperating therewith are disposed in a common plane that is generally prependicular to a vertical plane containing the center-line axes 47, 49 of the first 21 and second 23 tubular portions respectively. The common plane of the nozzles 41 also contains the longitudinal axis 47 of the lateral portion 23.

In a preferred embodiment of the invention, each nozzle emits a 60 conical spray pattern, preferably, and the centerline axis 51 of the spray nozzles 41 intersect the longitudinal axis 47 at an angle of about 45 or at a point A as shown in FIG. 2.

The right-hand periphery of the conical sprays intersect at point B on the longitudinal axis 47, which is shown in FIG. 2.

The left-hand outer perimeter of the conical sprays do not intersect within the confines of the elbow but would, if the axis 47 were extended, intersect at an imaginary point somewhere outside of the confines of the elbow extension 53. Actually, the left-hand peripheries of the spray cones contact the inside surface of the elbow extension 53 of the lateral tubular portion 23.

It should be noted that the

bosses

33, 35 are located close to where the lateral tubular portion 23 intersects the first tubular portion 21. Further, it is important that the spray nozzles be directed toward the gas collecting main 25 so that none of the spray liquid, emitted by the nozzles 41 (such liquid being conventional flushing liquor) falls into the first tubular portion 21 and into the ascension pipe 17.

The elbow extension 53 extends a short distance into the gas collecting main 25, and the space between the elhowextension 53 and the collectingmain 25 may be caulked with a suitable substance in a known manner. In operation, conventional flushing liquor is emitted by the spray nozzles 41' and such flushing liquor wets the interior surface of the lateral tubular portion 23, effectively wetting substantially all of the entire interior surface of such portion from the point B to and including the elbow extension 53. Such flushing liquor prevents the buildup of tarry encrustations that conventionally form in ascension pipe elbows equipped'with spray nozzles arranged vertically in the manner shown in the prior art. This is for the reason that each of the two opposed nozzles of the present invention coats theopposite wall area adjacent the: opposed nozzle, whereas with two adjacent vertical nozzles, no flushing liquor reaches the surface adjacent the nozzles. In this upper region of the ascension pipe elbow, therefore, there is much encrustation which is not found in elbows equipped with nozzles arranged in accordance with the invention.

A feature of the invention is that two diametrically opposed spray nozzles that are arranged in a plane normal to the central vertical plane of the ascension pipe elbow coat more interior surface of the elbow.

A feature of the invention is that the plane of the spray nozzles also contains longitudinal centerline axis of the lateral elbow portion wherefore the surface area contacted by each spray is a maximum.

What is claimed is:

1. In a coke oven battery with an ascension pipe connected to a vertical ascension pipe elbow having a lateral portion communicating with a gas collecting main and an upright portion with a vertical axis communicating with the coke oven battery, the improvement comprising:

(a) a pair of liquid spray nozzles mounted on opposite '4 sides of said lateral portion'and arranged in a common plane that is perpendicular to a vertical plane containing the centerline axis of said ascension pipe elbow,

(b) an opening in the elbow at the intersection of the latter and vertical portions, the said opening being significantly inclined with respect to a horizonta plane and having a closure therefore.

2. The invention of claim 1 wherein:

(a) said spray nozzles are directed at an angle of 45 to the vertical plane containing the centerline axis of said ascension pipe elbow and toward said gas collecting main. 7

3. The invention of claim 1 wherein:

(a) said lateral portion connects to a vertical portion of said elbow and communicates directly with said gas collecting main.

4. The invention of claim 2 wherein:

(a) said spray nozzles each produce a spray cone of flushing liquid having an angle of 60 that are effective Within the confines of said lateral portion.

References Cited UNITED STATES PATENTS 1,803,881 5/1931 Van Ackeren 202260 2,027,548 1/ 1936 Mclntire 202-254X 3,174,924 3/1965 Clark et a1. 208348 3,243,360 3/ 1966 Wethly 202256 NORMAN YUDKOFF, Primary Examiner D. EDWARDS, Assistant Examiner US. Cl. X.R. 202254, 241