SU1234413A1 - Reactor for producing petroleum coke - Google Patents

Description

2. Reactor according to Claim 1, characterized in that the direction of the partition is made in the form of a helical surface.

3. Reactor according to claim 1, characterized in that the guide partitions are made in the form of vertical plates.

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The invention relates to oil refining and can be used in delayed coking plants for the production of petroleum coke.

The purpose of the invention is to increase the service life of the reactor and improve the quality of coke by equalizing the temperature on the surface of the reactor.

FIG. Figure 1 shows the proposed reactor with guide baffles made in the form of a helical surface; in fig. 2 - the same, with opposite partitions made in the form of vertical plates.

The reactor for producing petroleum coke contains a cylindrical body 1, in the lower neck 2 of which there is a nozzle 3 for introducing raw materials, and in the upper neck 4 a nozzle 5 for gaseous coking products. At a distance of 10--100 mm from the housing 1, a heat-shielding housing 6 is externally installed with the formation of an annular cavity for the circulation of air or another gaseous substance by means of a fan 7 connected to the lower and upper parts of the housing by collectors 8.

In order to distribute heat more evenly over the reactor surface between the casing 1 and the casing b, guide walls are installed, made in the form of a screw surface 9 (Fig. 1) with the formation of a screw channel 10 or in the form of vertical plates 11 (Fig. 2) the formation of sectors-channels 12. In the reactor of FIG. 2 for the circulation of gaseous coolant, the sectors-channels 12 in the upper and lower parts are connected to the distributors 13, which, in turn,

4. Reactor on PP. 1-3, characterized in that the means for supplying the gaseous coolant are made in the form of a fan connected to the lower and upper parts of the casing by collectors.

ten

five

 5-30 35 40

connected to the collector 8 through the small collectors 14 for the supply and removal of the coolant to the distributor 13, at least at two points.

The reactor operates as follows.

After hydraulic extraction of the coke, the reactor is closed and heated with oil vapors from the parallel operating reactor. At the same time, pairs for heating enter the reactor via choke 5, pass down and out through choke 3. They warm up to 350-360 ° C.

As the upper part of the reactor is heated, simultaneously with the start of heating, the fan 7 is turned on so that the air moves through the channels 10 (or 12) from top to bottom. In this case, the heat is transferred from the heated upper part of the reactor vessel to the less heated lower part, and thereby the heating of the entire vessel is ensured.

When the required temperature is reached, the heating of the reactor is stopped and fitting 3 is fed to the reactor via the fitting 3. , 0 simultaneously switch the fan 7 so that the air moves along the channels W (or 12) from bottom to top. At the same time, the air flow transfers heat from the more heated surface of the lower part of the body (located in the zone affected by the flow of raw materials) to the surface of the upper part, thereby equalizing the temperature field.

The device correlates well with the inner and outer sides of the reactor wall during the heating, coking and cooling of the coke cake, which eliminates local overheating of the wall, the occurrence of cracks, bulges and will increase the service life of the reactor by 10-15 years, i.e. bring the service life to 30 - 35 years; At the same time, the turnaround time of the reactors is increased, which makes it possible to increase coke production by 8–10%.

The circulation of the gaseous heat carrier through the channels is carried out without

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the cost of additional heat for heating the circulating agent, since this uses the heat of the coking mass transmitted through the reactor vessel. The transfer of heat from reactor zones heated to 490–500 s to zones with a temperature of 400–420 ° C makes it possible to maintain the surface temperature of the reactor at A50 s, which

provides the content of volatile substances in the coke cake 7-9%.

Editor A. Ogar

Order 2952/30 Circulation 482Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Compiled by V. Kudr Schov

Tehred L.Oleynik Proofreader L.Pilipenko

Claims (4)

1. REACTOR FOR PRODUCTION OF OIL COKE, comprising a cylindrical casing, provided with an external heat-shielding casing with means for supplying gaseous coolant, characterized in that, in order to increase the service life of the reactor, improve the quality of coke by equalizing the temperature on the surface of the reactor, it is equipped with guide walls, installed between the housing and the casing and forming channels for moving the coolant. Qtit.l u 4* 4* 2. The reactor by π. 1, on the basis of the fact that the guide partitions are made in the form of a helical surface. 3. The reactor according to claim 1, characterized in that the guide walls are made in the form of vertical plates. 4. The reactor according to paragraphs. 1-3, characterized in that the means for supplying a gaseous coolant is made in the form of a fan connected to the lower and upper parts of the casing by collectors.