DE3013351A1 - Vertical dry coke quenching chamber - with gas extraction into built in dust extractor between antechamber and quenching chamber - Google Patents

Abstract

A vertical chamber for continuous dry quenching of coke by inert gas in a counterflow consists of an antechamber just below the charging hole, a gas extraction section, and a quenching chamber, leading to the coke discharge at the bottom. The hot gases are extracted to the heat exchanger via a dust extractor space which is incorporated in the tower structure and is surrounded by refractory walls. This saves a special external dust separator and eliminates the rapid wear of pipes and heat exchanger tubes by the sharp-edged coke breeze particles.

Description

The invention is a vertical chamber for

continuous dry quenching of coke by means of inert, through the Coke and a heat exchanger of circulating gases with eggs below one Loading opening lying upper antechamber, one below, at the lower one End with a gas supply and a coke discharge provided quenching chamber and a Gas vent between antechamber and extinguishing chamber.

Of the circulating gases, when the Coke entrained coke particles in the quenching chamber. Coke particles are known sharp-edged and have a highly corrosive effect on the wall of the lines through which a gas carrying coke is passed. It is therefore required, from the inert gas before being fed to the heat exchanger at least the coarser, entrained solid particles.

to be deposited in order to avoid rapid destruction of the lines and the tube bundle to prevent in the heat exchanger.

The separation takes place by deflecting the dust-laden gas flow and a significant reduction in flow velocity, that is, the separator is a very voluminous apparatus that is placed in front of it especially when planning dry coke cooling for an existing coking plant difficult to accommodate. Second, it represents a not inconsiderable cost factor represent.

It is the aim of the present invention to provide a vertical chamber for Dry quenching of coke with a solid particle separator from the inert gas equipped so that a separate dust collector can be omitted.

According to the invention, in the type described above trained, in antechamber and extinguishing chamber divided vertical chamber for the continuous dry quenching of coke for the extraction of the heated gases for A heat exchanger connected directly to the gas exhaust as a dust separator trained room surrounded by fireproof walls is provided.

Is the horizontal cross-section of the vertical chamber circular or approximately circular, that part of the cylindrical wall of the chamber is that in which the gas outlet openings are located, surrounded by a coaxial wall, which, together with the wall of the vertical chamber, serves as a dust collector limited. Reinforcing ribs between the outer wall of the dust separation room and the wall of the quenching chamber can act as a deflector for the withdrawn cooling gas be trained.

The cross-section of the gas paths in the dust separation room is to be dimensioned in such a way that that a separation of the solid particles entrained by the gas causes the flow velocity results. The flow velocity should be a maximum of 1.5 to 4 m in the second, preferably a value between 2 m per second and 2.5 m per Second attached.

At the bottom of the dust collector there are collecting containers, their Floor seals are lockable.

To extract the cooling gas from the dust separator, an above the same lying ring line around the upper part of the vertical chamber is used. It is connected to the dust collection room through a series of openings Connecting openings with built-in regulating elements; by means of this, the Flow rate can be influenced in the dust separation room.

In the accompanying drawings, one embodiment is one Vertical chamber shown according to the invention.

Figure 1 shows a vertical section through the vertical chamber, FIG. 2 shows, on a larger scale, a section along the section line II-II from FIG Figure 1.

With 10 the antechamber is designated, into which the coke through the charging opening 11 is introduced in such a way that there are no emissions. 12 is the quenching chamber in the lower part of which is the feed line 13 for the inert gas. The inert gas flows through the bed of coke in an ascending direction, i.e. in countercurrent to the Coke bed and leaves the cooler through the discharge openings 14.

25 is the cylindrical wall of the resting on the retaining walls 26 Dust separation room 18. In this, the heated inert gases pass through the gas exhaust openings 14th

The ring line 19 is located above the dust separation chamber 18 Dust separation space 18 is through the openings distributed over the circumference with the Ring line 19 connected. In the openings there are flaps 20 for regulation can serve the gas velocity.

Between the wall 22 and the wall 25 of the dust separation space 18 there are stiffening ribs 21. These can be used as deflectors for the ascending Be formed inert gas.

The cooled coke is through the extraction device 15, which consists of a Lock system with slides and collecting containers consists of a conveyor 16 supplied; from here the cooled coke reaches the ramp tape 17 or another suitable transport device.

The separated coke dust is collected in the spaces 23 over Discharge devices 24 discharged and cooled in a known manner and the intended Use fed.

When forming the vertical chamber with the attached dust separation room it is possible to sufficiently separate the coarse dust over 0.3 mm and onto this Way to protect the downstream heat exchangers from excessive wear.

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Claims (6)

Vertical chamber for continuous dry quenching of coke 1. Vertical chamber for continuous dry quenching of coke using inert, through the coke and a heat exchanger in the cycle of frozen gases with one below eggs at the top of the antechamber, and eggs below at the bottom End with a gas supply and a coke discharge provided extinguishing chamber and a Gas vent between. Antechamber and lisc; karamer, d u r c h e k e n n n z e i c h n e t that for the withdrawal of the heated gases for the heat exchange a direct connected to the gas exhaust, designed as a dust separator, of refractory Walls surrounded space (18) is provided. 2. Vertical chamber according to claim 1 with a circular horizontal cross-section, characterized in that that part of the cylindrical wall! 22), in which the gas outlet openings (14) are located, surrounded by a coaxial wall (25), which, together with the wall (22) of the vertical chamber, serves as a dust collector Space (18) limited. 3. Vertical chamber according to claims 1 and 2, characterized in that that at the bottom of the dust collector (18) lockable dust collection containers by bottom closures (23) are located. 4. Vertical chamber according to one of the preceding claims, characterized by stiffening ribs (21) between the outer wall (25) of the dust separation room (18) and the wall (22) of the extinguishing chamber (12), which act as a deflector for the withdrawn Cooling gas are formed. 5. Vertical chamber according to one of the preceding claims, characterized characterized in that the dust separation space guided around the quenching chamber (12r (18) through a series of openings in the upper part to a surrounding the vertical chamber Ring line (19) via connection openings with control elements built into them (20) is connected. 6. Vertical chamber according to one of the preceding claims, dadurc; geker.a shows that in the dust separation room (18) the flow cross-section for the withdrawn cooling gas is dimensioned so that low gas velocities prevail.