DE593711C

DE593711C -

Info

Publication number: DE593711C
Application number: DENDAT593711D
Authority: DE

Description

Pa τ ε ν τ Ansprüche:Pa τ ε ν τ claims:

1. Abhitze-Steilrohrkessel mit Zusatzfeuerung, bestehend aus Ober- iund Untertrommeln und diese verbindenden Rohrbündeln, dadurch gekennzeichnet, daß zwischen seitlichen Verlängerungen je einer Ober- und Untertrommel (a, d) ein zusatz-" liches Rohrbündel (g) eingewalzt und aus- go schließlich im Bereich der Zusatzfeuerung angeordnet ist.1. Waste heat vertical tube boiler with additional firing, consisting of upper iund lower drums and tube bundles connecting them, characterized in that an additional tube bundle (g) is rolled in and out between lateral extensions of an upper and lower drum (a, d) go is finally arranged in the area of the additional firing.

2. Abhitze-Steilrohrkessel nach Anspruch i, dadurch gekennzeichnet, daß hinter dem zusätzlichen Rohrbündel (g) vor der Vereinigung der Gase der Zusatzfeuerung mit den Abhitzegasen noch ein Überhitzer (/z) angeordnet ist.2. Waste heat vertical tube boiler according to claim i, characterized in that a superheater (/ z) is arranged behind the additional tube bundle (g) before the combination of the gases of the additional firing with the waste heat gases.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

Richard Schumann in Darmstadt

Waste heat vertical tube boiler with additional firing

Patented by the German Empire on March 9, 1930

Waste heat boilers with additional firing are known in which the gases from the additional firing First coat part of the boiler heating surface and then with the waste heat are fed together to the other part of the boiler heating surface. These well-known However, boilers have the disadvantage that in that of the waste heat gases and the exhaust gases the auxiliary firing jointly heated part of the boiler (usually it is a special boiler with a water space separated from the additional boiler) only a poor water circulation is caused.

By the invention, the construction is now an heated in ^l the known manner the waste heat boiler can be improved such that in the actual, as a waste heat boiler arbeiten- ■ the part of the boiler system a good Wasscrumlauf achieved and the heat transfer is improved in this part of the boiler in this way. This is achieved by rolling an additional tube bundle between the lateral extensions of an upper and lower drum in a steep tube boiler and placing it exclusively in the area of the additional furnace so that it receives the radiant heat of the same. The fact that the water for the additional boiler heating surface / the vertical waste heat boiler is taken from the bottom and the excess water carried along by the steam generated in the additional heating surface is fed back to the actual waste heat boiler via the upper drum means that good water circulation is created in the vertical tubes of this only weakly heated waste heat boiler .

Behind the additional tube bundle, namely before the combination of the gases from the additional furnace with the waste heat gases, a superheater can be arranged, which is then also in a boiler zone with high. Temperatures is located.

In the drawing, the subject matter of the invention is in an exemplary embodiment, and although in

Fig. Ι in a section along xy of FIG. 2 and in

Fig. 2 in plan view.

The steep-tube boiler consists of a long upper drum, a short upper drum b, a lower farted drum c located below the former and a lower long drum d located below drum b. The drums are connected to one another in the vertical direction by vertical tube bundles e, f in the course m, 11 of the waste heat gas ^{and by tubes /, /]} in the horizontal direction. An additional tube bundle g is rolled in between the extensions of the upper drum a and the lower drum d , which is arranged exclusively in the area of the additional firing system /. A superheater Ii is located behind the tube bundle g, namely in front of the combination of the gases from the additional combustion with the waste heat gases.

The additional tube bundle absorbs the radiant heat during the burning process and creates a particularly strong water circulation in the main boiler. The superheater is also in an area of high temperatures, because the temperature of the fire gas is still around 700 ^° C. at this point.

The highly heated fire gases and the waste heat gases coming from the furnace in the direction of the arrow tn enter the main boiler together. The cooled gases flow in the direction of the arrow η to the chimney or exhaustor.