DE2264854A1 - Continuous refuse carbonisation - in a rotary acid-resistant brick lined tube furnace with indirect gas heating channels - Google Patents

Abstract

Apparatus for the continuous carbonisation of refuse comprises a rotary tube furnace mounted for rotation around a horizontal or slightly inclined longitudinal axis, with an acid-resistant inner lining, having ends closed at the refuse feed and coke discharge openings respectively, and an indirect heating system. Permits larger quantities of largely undisintegrated refuse to be treated. The tube furnace has its ends closed at the refuse feed inlet and coke discharge outlet and is heated indirectly via heating channels in the acid-resistant inner brick lining, which has an outer layer of insulating brick, in turn enclosed in a steel shell. Cleaned off-gases from the furnace are supplied through one header and waste gases are discharged through another header.

Description

Int. Cl. ² :

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

C 10 B 47 30

Offenlegungsschrift 22 64 854

File number:

Registration date:

Disclosure date:

23.872

24. 7.75

Union priority:

Designation: Device for the continuous coking of waste

Elimination from: Applicant:

Inventor: P 22 42 012.8

Mannesmann AG, 4000 Düsseldorf

Klenck, Jürgen von, Dr.rer.nat., 4000 Düsseldorf

< QO CM

θ 7.75 509 830/2

PATENT LAWYERS

DIPL. ING. WALTER MEISSNER DIPL. ING. PETER E. MEISSNER DIPL. ING. H.-JOACHIM PRESTING BERLIN

XHIBQXBCKHXX

1 BERLIN 33 (GRUNEWALD), HERBKRTSTRASSE 22

2 March 6. 1975

Mjr / Hk

"Device for the continuous coking of waste"

The invention relates to a device for the continuous coking of waste.

When disposing of garbage, it is known to use it pyrolytically dismantle in a retort. The retort consists of a vertical container that can be heated from the outside, and through the purified gas of the pyrolysis process (prospectus of Pollution Control KG). The disadvantage here is that the waste coking in the retort is a substantial comminution of the Garbage conditional, so that the throughput is relatively low. For thermal reasons, an increase in performance is an example not possible by enlarging the retort cross-section, since a uniform coking as a result of the interior Heat gradient would no longer exist

The invention is therefore based on the object of creating a device of the type mentioned at the outset which allows larger To enforce quantities of garbage largely unscrushed.

According to the invention, this object is achieved by a longitudinal axis that is rotatable about a horizontal or inclined longitudinal axis

509830/0002

Berlin office

Telephone: 8856037/886 2382 Wireword: Invention Berlin

Bank account: W. Meissner, Berliner Bank AQ, Berlln-Haleneee Kurf ürstendamm 130, account no. 36 9B716 000

Postal checking account: W. Meissner, Berlin West 12282-109

Rotary kiln, the inner lining of which is made of an acid-resistant material and whose end faces except for the refuse feed and coke discharge opening are closed and an indirect heating device.

Further refinements of the invention emerge from the subclaims.

The invention is to be explained below with reference to the drawings, which shows

Fig. 1 shows the rotary kiln, the

Fig. 2 + 3 a transverse and longitudinal section through the furnace and the

Fig. 4 shows the construction of the furnace lining »

The coking furnace shown in Figure 1 consists of the rotary kiln 2 rotatably arranged about its inclined longitudinal axis, the end faces 26, 27 of which except for the refuse feed opening 28 and the coke discharge opening 29 are closed. The heating channels 31 »which are arranged within the acid-resistant inner lining 30 serve for its indirect heating Connections 32 for the supply of the cleaned exhaust gas from the rotary kiln and equipped with the flue gas discharges 33 are.

According to Figures 2 to 4, the heating channels 31 can be formed from several layers of ceramic material, the outermost layer 1 the thermal insulation of the heating channels and the Inside the drum causes opposite the steel jacket of the rotary drum. On top of this, bricked stones build up at a distance, which form the second layer. A is created between the stones Cavity for the guidance of the fuel gases. Layer 3 is used

- 3 509830/0002

Covering the resulting heating ducts. It can either be used as a mechanically particularly resistant layer but an additional layer 4 can also be applied as a wear layer. The arrangement of the Bricks of layer 2 bricked with spaces in between can be done in different ways, as can be seen from the development of this layer (Fig. 4) emerges · For example, the stones can be staggered (scheme 1), they can have channels in the axial direction form (scheme 2) or they can be combined to form the image of an Archimedean screw (scheme 3)

At the input end of the rotary kiln, the channels end in openings in the layer 1 and the steel jacket of the rotary kiln, whereby the flue gases leave the heating system. The hood at this point leads the flue gases emerging to the outside into a chimney away.

Claims - 4 -.

509830/0002

Claims (3)

fr1 case no. 3973 A Mannesmann AG H Patent claims: 1o device for continuous coking of waste, characterized by a rotatable about a horizontal or obliquely inclined longitudinal axis Rotary kiln, the inner lining of which is made of an acid-proof material and the end faces up to are closed on the garbage supply and coke discharge and an indirect heating device. 2. Apparatus according to claim 1, characterized in that for indirect heating in the inner lining of the Rotary kiln heating channels are arranged for the passage of fuel gas. 3. Apparatus according to claim 2, characterized in that the heating ducts are provided with one or more connections for the supply of the cleaned exhaust gas resulting from the coking of the industrial waste and with flue gas discharges . Dipl.-Iüü · '>' ■ '■ - ^ Patent attorney 509830/0002