US1747610A - Standpipe for coke ovens - Google Patents

Description

Feb. 18, 1930. J. VAN ACKEREN 1,747,610

STANDPIP'E' FOR COKE OVENS Filed D60. 15, 1,923. 2 Sheds-Sheet 1 Feb. 18, 1930. J. VAN ACKEREN STANDPIPE FOR COKE OVENS Filed Dec. 13, 1925 2 Sheets-Sheet 2 E LIB. 111

m Ill? m u Patented Feb. 18, 1930 UNITED STATES PATENT OFFICE JOSEPH VAN ACKEREN, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE KOPPERS COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA A STANDPIPE FOR COKE OVENS I Application filed December 13, 1923. Serial No. 680,533.

An object of this invention is to provide an improved standpipe construction for the discharge of distillation products from carbonizing plants, such as by-product coke oven plants of the Koppers cross-regenerative type exemplified in the prior Letters Patent of the United States of Joseph Becker, for coking retort oven, No. 1,374,546, granted April 12, 1921. According to the invention, provision is made for spraying the gases and collecting the spray liquor, before the gases reach the collecting main, without danger whatever of the spray entering the coking chambers or retorts. The present invention, therefore,

5 also comprises an improved apparatus for ammonia recovery from the gases, inasmuch as the spraying before the gases reach the collecting main is employed for removing the bulk of the fixed ammonia, with a resultant 2o economical disposal of waste liquor, for example, as set forth in the prior application of Joseph Becker, filed August 2, 1922, Serial No. 579,147. After the gases have been discharged from the collecting main and the spray liquor has been separately discharged from the standpipes, both the gases and the spray liquor may be treated for the recovery of ammonia in a manner fully set forth in said prior Becker application. According to the invention, the gas is cooled by the spray, for example, of ammonia liquor before the gas ever enters the collecting main and at the same time the bulk of the ammonium chloride is washed out of the gas. The gas enters the collecting main cooled and substantially free of chloride, with the result that corrosion of the collecting main is avoided. The invention has the further advantage of preventing formation of and clogging up of the standpipes with graphitic material. Moreover, the same advantageous results as those of the Becker process hereinbefore referred to, in so far as ammonia recovery is concerned, are attained without the necessity 4 of employing a hot washer tower in which from the distillation of the coke.

the gas is treated before-it enters the primary -cooler.

In addition to the general objects recited above, the invention has for other objects such other improvements or advantages in construction and operation as maybe found to obtain in the structures and devices hereinafter described or claimed.

In the accompanying drawings forming a part of this specification and showing for purposes of exemplific'ation a preferred form and manner in which the invention may be embodied and practiced, but without limiting the claimed invention specifically to such illustrative instance or instances:

Figure 1 is an elevational view of a stand pipe apparatus constructed in accordance with the inventionfthe view showing the apparatus applied to the gas outlet of one of the coking chambers of a coking retort oven and connected with a collecting main in which the gases and distillation products of a battery of coke ovens are collected and subsequently discharged to the by-product recovery apparatus;

gig. 2 is a top plan view of the apparatus, an

Fig. 3 is a vertical sectional view of the same.

The same characters of reference designate the same parts in each of the several'views of the drawings.

In the illustrated embodiment ofthe invention, there is shown a fragment of a coking chamber 11 provided in the top 12 with a gas outlet 13 through which discharge the gases The coking chamber 11 may be one of battery of similar chambers, for example, as set forth in the prior patent of Joseph Becker No. 1,374,546, hereinbefore mentioned. The discharge outlet 13 of each coking chamber 11 is equipped with a standpipe apparatus, and the standpipes of the several coking chambers are connected with. and discharge into a common collecting main 14 which extends along one vided with an interior upwardly tapering nozzle pipe 20 the bottom of which forms the seating portion of the riser pipe. The nozzle pipe 20 projects upwardly into the pipe section 17 to provide an annular chamber 21 located between the wall of the nozzle pipe 20 and the surrounding wall. of the pipe section 17, and below the top of the nozzle pipe 20. This chamber 21 is employed to receive the spray liquor and dischar e it through a laterally proj ecting'downwar ly inclined discharge pipe 22, without permitting the spray liquor to enter the nozzle pipe 20 and fall into the coke oven chamber or retort. An inclined inspection pipe 24 communicates with the interior of the nozzle pipe 20 and is provided at its outer laterally projecting end with a pivoted manually operable cover 25.

From just below the top of the upper section 19 of the'riser pipe 16, the gases pass into the slightly downwardly inclined discharge pipe 26, the latter being connected by a short pipe section 27 with the side of the collecting main 14. I Within the discharge pipe 26 is pivoted a; butterfly valve'28 operated by the outside valve lever 29. The valve 28 permits the shutting off of the standpipe from the collecting main, either at the time of charging the corresponding coking chamher or pushing out the coke.

The above described construction provides an extremely simple and economical means for permitting the gases to be sprayed in the standpipe and the liquid, for instance, liquor containing the fixed ammonia as ammonium chloride, to be collected without any danger of the spray liquor entering the nozzle pipe 20 for the ascending gases and falling into the coking chamber or retort. The spray liquor is introduced into the gases as'they pass up wardly through the riser pipe 16 from a nozzle 30 set into a port 32 located in the top of the upper section 19 of the riser pipe. The falling spray is deflected by an umbrella plate or baffle 33 supported on spaced uprights 34 mounted on the top of the nozzle pipe 20. The ascending'gas'espass through theopenings 35 between the uprights supporting the umbrella plate 33 and the spray falling on top of the umbrella is deflected into'the chamber 21 from which it discharges as liquor through the discharge pipe 22. The liquor may be collected from the several discharge pipes 22 of the battery and treated for the recovery of ammonia according to the processdescribed in the said prior Becker application. The present invention provides apparatus having for one of its uses the simple and economical expedient of spraying the gases from the retort to cool them and to free them of ammonium chloride, before the gases ever reach the collecting main. This removes practically: the entire bulk of ammonium chloride from the gases, without making it necessary to employ hot washer towers, results in a protection of the collecting main from corrosion, and prevents the formation and accumulation of graphitic material in the standpipe.

The invention as hereinabove set forth may.

be variously embodied within the scope of the claims hereinafter made.

I clalm:

1. In a standpipe apparatus for ofl'take of.

gases of distillation from a coking chamber to a collecting main therefor comprising a standpipe extending upwardly from a distillate gas outlet from the coking chamber and terminating at its lower portion in open communication with said chamber and said outlet and adapted for being directly connected at its upper portion with the distillate gas collecting main by means of a lateral conduit connecting the standpipe directly with the collecting main, the combination of spraying means adapted to discharge spraying liquid within saidstandpipe downwardly towards the outlet from the coking chamber; deflecting means within said standpipe adapted for deflecting the sprayed liquid from passing through said outlet into said coking chamber; and collecting and discharge means within said standpipe and adapted to collect the sprayed liquid deflected by said deflector means and to discharge such liquid directly from said standpipe and independently of said coking chamber and said collecting main.

2. In a standpipe apparatus for oiftake of gases of distillation froma coking chamber to a collecting main therefor comprising a casing extending upwardly from a distillate gas outlet from the coking-chamber and terminating at its lower portion in open communicatlon with said chamber and said out:

let. and adapted for being directly connected at its upper portion with the distillate gas collecting main by means of a lateral conduit connecting the standpipe directly with the collecting main, the combination of an inflow pipe member arranged within and spaced from the sides of said casing and disposed between the casing and the outlet from the coking chamber'for inflow of distillate gases from the coking chamber upwardly into the casing; a baflle located within said casing and above said pipe member; spraying means disposed above said bafile and arranged to discharge liquid downwardly within said casing from above said baflle; and collecting and oil-flow means within said casing and arranged therein for collecting the sprayed liquid around the pipe member and below the baflle and adapted for flowing said collected liquid oil from said casing independently of said coking chamber and said collecting main.

In testimonywhereof I have hereunto set,

my hand.

JOSEPH VAN ACKEREN.

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