US786828A - Tar-dehydrater. - Google Patents

Description

.110,786,821 PATBNTBD A1211.' 11,1905.

' 11A. MOORE."

TAR DEHYDRATER.v APPLIOAT-IONl FLED MAY 5.119035'.

5 SHEETS-Smm 1.

f .1 III. l l l I I I I I I l I] lill- WJI.

, i PATENTBD A111. 11; 1905.' E. A. MOORE. 1 TAR DEHYDRATER-1 AfPLIATION AFILED .MAY 5, 1903.

5 SHEETS-SHEET 2.

Patented April '11, 1 905.

'UNITED STATES PATENT OFFICE.

EDWIN A. MOORE, OFV PHILADELPHIA, PENNSYLVANIA.

-TAR-..DEHYDRATER.

SPECIFICATION forming part of Letters Patent No. 786,828, dated .April 11, 1905. Application filed May 5,1903. Serial No. 155,721.

T all whom vt may concern):

' Be it known that I, EDWIN A. MOORE, a citizen of the United States, residing atPhiladelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Tar-Dehydraters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertainsto make and use the same.

My invention relates to the dehydration of tar derived from gas evolved from the distil-A lation of coal, and has for its'object the separation of the water from tar and the arresting of the distillates liberated in the treatment of the tar; and the'invention consists in certain improvements, which will be fully disclosed in the following specification and claim.

In the accompanying drawings, which form part of this specification, Figures 1 and 1a represent a top plan view of my improved tardehydrater with a section removedA from the center; Figs. 2 and 2, a vertical longitudinalV section of the same, the supply and discharge valves, the tubular arms, and the pipe 40 being shown in side elevation; Fig. 3, an elevation of the discharge end of the device, and Fig. 4 a vertical transverse section on line 4 4, Fig. 2.

Reference being had to the drawings and the designating characters thereon, the nu-` meral 1 indicates the tar-receptacle of the device, preferably made of boiler-iron, at each end of which is a right-angled flangedring 2, to one of whichiianges is secured an. extension 3 and to the other an extension 4, both of which are of cast-iron, the extension 3 being provided with a tar-supplypipe 5. To the extension 3 is secured a head 6, provided with an inwardly-extending bearing 7, a stuffingbox 8 on the outside of the head, and a gland 9 for the adjustment of the packing by means ofthe bolts 10 andnuts l1, which engage the flanges on the stuffing-box and on the gland. rIo the extension 4 is. secured a head l2, provided with alike inwardly-extending bearing 13, a stuiiing-box 14, a gland 15, bolts 16, and nuts 17, and in the head and above the horizontal center thereof is an elongated opening 18, crossing the head transversely, and secured to the head 1s an elongated extension-or pocket 19,'having a tar-collecting chamber 2.0, having exit-pipes 21 21 connected therewith for conducting tar from the dehydrater.

Within the receptacle is an agitator composed of a tubular shaft 22, on which are bands Y or collars 23, preferably shrunk on the shaft and to which shaft and in communication with whose chamber 24 are secured `radial tubular arms 25, arranged in groups, and on the hori- Zontal members 26 of the arms short sections of chain 27 may be secured to more effectively agi-l tate the tar during the reyolution of. the agitator. The radial arms and their horizontal members are arranged in pairs and at a right angle to each other, the courses of the horizontal members overlapping the adjacent ends of adjoining members. To each end ofthe shaft 22 is secured a right-angled4 anged ring 28, to which is secured a tubular trun-nion 29'by bolts 30, extending through one of the Hanges of the ring 28 and through the flange 31 on the inner end of the trunnion, and the trunnion extends through the bearing 7 and the stuffing-box 8,

being provided with a steam-supply pipe 32 and a valve 33 for regulating vthe supply of steam to the dehydrater, and on the outer end of said trunnion is a sprocket-wheel 34,` by which the agitator is revolved by a belt (not shown) connected with a suitable motor or source of power.

The trunnion 29 at the opposite or discharge end of the device extends through the bearing 13 and the stuffing-box 14 and is provid ed with a steam-discharge pipe 35 and a valve 36, both of which are of less capacity than the steamsupply pipe and its valve at the opposite end of the device.

- Above the receptacle 1 is a water-tank 37, supported on rods 38, secured to the wall of the receptacle, and is supplied with water by a suitable pipe, (not shown,) and the water. is conductedy from the tank by pipe 39, which extends nearly to the top of the tank, as shown in Figs. 2 and 4. From the top of the receptacle 1 extend pipes 40, which connect with a header or pipe 41 for conducting the vapors from the tar being dehydrated and condensing them in the tank by surface condensation, the pipes 40 and the header 41 constituting the primary condenser. To the lower side of the header 41 and near one end thereof is con nected a serpentine pipe 42 or secondary condenser of less diameter than the pipes 40 and header 41, which crosses the tank 37 repeatedly and draws off or conducts from the primary condenser the resultant liquid or distillation and all the emanations from the coaltar evolved and liberated by the heated and agitated tar in the dehydrater, which are discharged at the opposite end ofthe tank th rough pipe 43 and collected in a suitable receptacle for the separation of the chemical properties therefrom.

To the lower side of the receptacle 1 is attached a pipe 44, provided with a valve 45 for the withdrawal of the contents of the receptacle at any time that it becomes necessary.

In the operation of dehydrating tar the receptacle 1 is supplied with tar through pipe 5, and steam is admitted to the interior of the agitator through valve' 33 and pipe 32. 'Ihe p agitator is revolved, tar heated, the water in the tar vaporized, and the vapor conducted through the primary and secondary condensers in the tank 37. The ammonia and other distillates of the tar carried with the water into the condensers by the vapors are arrested and4 conducted to a suitable receptacle for the recovery of the ley-products which it contains. The tar is discharged from the surface of the 'body in the receptacle, deprived of water,

ammonia, and other constituents which will volatilize at the temperature to which the tar is subjected, and flows olf through passage 18, chamber 20, and pipes 21.

The tar in the receptacle 1 is maintained at about the line indicated on Figs. 2 and 2" and the tar heated to a point or degree to vaporize the water and the volatile distillates contained in the tar while the agitator is revolved slowly, the supply of the tar being regulated to produce a constant overflow of the tar from the opening 18 and the pipes 21. VIhe level of the tar varies slightly, according toits fluidity. The thin tar moving more rapidly toward the discharge end of the receptacle than thick tar causes it to rise higher; lbut under all conditions the tar flows off or is discharged at the end of the receptacle opposite that at which it is received, and the iiow of the tar is constant while the apparatus is in operation.

Having thus fully described my invention, what I claim is- A tar-dehydrater consisting of a receptacle provided with a supply-pipe, an agitator having a tubular body and tubular arms, trunnions detachably connected to the body of the agitator and provided respectively with steam supply and discharge pipes, a detachable head at each end of the receptacle provided with tubular bearings and stuffing-boxes for said trunnions, a tar-discharge opening in one of the heads of the receptacle and in the plane ol the level of the tar, and a condenser.

In testimony whereof I aiix my signature in presence of two witnesses.

EDWIN A. MOORE.

Witnesses:

D. C. REINOHL, C. W. METCALFE.

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