US1617619A - Apparatus for cracking oil - Google Patents

Description

Feb/15,1927. v 9 9 G. EGLOFF ET AL APPARATUS FOR CRACKING OIL Original Filed Au 21. 1920 carbon from the system in the falling I Patented Feb. 15, 1927.

UNITED STAT PATENT OFFICE.

-VERSAL OIL PRODUCTS COMPANY, or

sou'rn DAKOTA.

CHICAGO, ILLINOIS, A CORPORATION OF- APIPARATUS FOR CRACKING OIL. v

Application filed August 21, 1920, Serial No. 405,100. Renewed June 9, 1926.

This invention relates to improvements in apparatus for cracking oil. The object of the invention is to provide effective means for continuously removing the precipitated process of the so-called continuous type.

In the drawings Fig. 1 is a side elevation partly in section of our improved apparatus.

Fig. 2 is a section taken through line AA of Fi' 1.

ReEeI-ring to the drawings, 1 deslgnates a furnace provided with burner, 2, firebox, 3,

and stack, 4. In this furnace is mounted the heatin elements, which may consist of a pair 0 headers, 5 and 6, connected by a plurality of tubes, 7-7. The raw charging oil may be continuously delivered to the header,

5, through the chargingline, 8, connected to any suitable charging pump and supply tanks (not shown). The oil passes out of the header, 6, through line, 9, controlled'by valve, 10, to the upper part of a carbon precipitatin chamber, 11. This chamber, 11,

is provided witha vertically extending par- 2 tition or septum,*12, which extends fronrtlrr top of the chamber, 11, down nearly to the bottom thereof, as-shown clearly in dotted line in Fig. 1. The vapors and gases which are-not condensed in the chamber, 11, pass out through line, 13, controlled by valve, 14,

into the lower part of dephlegmator, 15.

The vapors condensed in the deplilegmator,

15, are returned by pipe, 16, to the charging line, 8. A valve, 17, is interposed in the line 16. The reflux condensate is prevented from back into the pipe, 13, by means of a space cap member, 18, mounted above that portion of the pipe, 13, which projects into the lower end of the dephlegmator. The upper part of the dephlegmator is connected by line, 19, controlled by valve, 20, to a water condenser coil, 21. This condenser coil, 21, is connected by line. 22, in Which may be interposed a valve, 23, to the receiver, 24. The receiver, 24, is provided with liquid dra-Wofi' pipe, 25, controlled by throttle valve,

26, and gas outlet pipe, 27 controlled by valve,

- 28. It is also provide with liquid level gauge, 29, and pressure gauge, 30. The arrangement of the valves referred to is such that a uniform pressure may be maintained oh the system from the heating element to and through the receiver, or a differential pressure may be maintained on various parts,

of the system by suitably regulating the valves. I In the event of maintaining a higher pressure on the still than the dephlegmator, the reflux condensate will have to be pumped back to the line, 16, in which case a'pump ether with its precipitated carbon content is constantly drawn 01f through the rotating valve plug, 31, to delivery pipe, 32. -This valve plug is driven through shaft, 33, and gearing 34, by any suitable source of power. The arrangement is suchthat the carbon precipitating chamber, l1, will be constantly freed of its heavy residue and carbon con tent, while at the same time permitting the un'condensed vapors to pass freely to the dephlegmator: The oil in the still is preferably maintained in liquid phase so as to prevent carbon'precipitation in the still, or, in other words, vaporization takes place in the qhamber, 11, where the carbon is thus precipitated.

IVe claim as our prevention:

1..An apparatus for treating oil compris ing a still having a pair of headers, communicating cracking tubes between said headers, means for feeding Oll to one of the headers to pass through said tubes to the other header and to be heated during such passage to the cracking temperature while maintained in a substantially liquid phase, a vertically disposed expansion and separating chamber adapted to receive heated oil after passage through said cracking coils, a vertical partition in said chamber for causing the hydrocarbon'material introduced thereto to pass downwardly through the chamber and thence upwardly on an opposite side of said partition, a continuously rotating valve at the lower end of said chamber for discharging liquid oil and precipitated carbon therefrom and a vapor discharge from the opposite end of said header for discharging vapors therefrom.

2. An apparatus for treating oil, comprising a tube still through which oil is adapted to be passed and heated, during passage therethrough, to a cracking temperature, a

vertically disposed expansion separating chamber, means for delivering heated oil constituents from said tube still to said separating chamber, means within said separat-' ingehamber for causing saidheated con: stltuents to pass downwardly throughout substantially the entire len h thereof and then to rise vertically theret rough, a driven rotary valve at the lower end of said chainber for-discharging liquid oil and preeipi: tated carbon there om,.and means or tak-' ing ofi apors from the upper end of said chamber. v

. 3. An apparatus. for treating oil, comprising a tube still through which oil is adapted are ting chan ber, means within. said separatin chamber-for-pausing' said. heatedeon stituents to pass; downwardly..-.-. thlt c'm" hout substantially the entire .lengt-h thereo and. then to risevertieally therethrough,' a driven rotary vaive'a't the lower end of said cham her "for discharging. liquid'oil and precipitated carbon therefrom and mealis for taking oifvapors from the upper end of'said chamber, a dephlegmator for; receiving the vapors taken off frofn said separating chamber, means for returning reflux condensate from said dephlegmator to. said tube stil l,= and means for maintaining. a superatmos-i ment in the apparatus.

GUSTAV EGLOFF. HARRY P. BENNER.

pheric pressureon the oil undergoing treat-

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