Deutsche Babcock Werke Aktiengesellschaft

Llb Lurgi Lentjes Babcock Energietechnik Gmbh

Deutsche Babcock Energie- Und Umwelttechnik Ag

Horst Mollenhoff

Heiko Rehwinkel

Hans-Joachim Meier

Rudiger Wegelin

Gunther Dehn

Joachim Krein

Helmut Wiehn

Dirk Bunthoff

Gerd Morawski

Guther Dehn

Frank Dziobek

In a filter housing (10) for the cleaning of dust laden, preferably hot gas ceramic filter candles (6) which are closed at one end are positioned in multiple levels one above the other and connected to laterally spaced apart supporting collectors (7). The supporting collectors (7) and the filter candles (6) within one level form a filter module which is divided into several mutually separate filter segments (18) in the shape of a circular sector. The supporting collectors (7) of one filter segment (18) are connected with a clean gas collecting channel (8) located on the same level, whereby a space remains in the center of each level which is free of collecting supports (7). Into each clean gas collecting channel (8) protrudes a cleaning lance (19) either directly or indirectly. (FIG. 1)

Apparatus for the cleaning of dust laden gas

In a process for the cleaning of dust laden, preferably hot gas with the aid of ceramic filter candles (6) which are open at one end stacked above one another in levels in a raw gas space, and connected to a clean gas space, these filter candles are cleaned by way of pulsed gas, which is blown for a short period of time from the side of the clean gas space and against the direction of gas flow into the filter candles. In the raw gas space the gas to be cleaned and the dust loosened by the cleaning are guided separately so that the loosened dust is guided to the dust removal structure of the raw gas space without once again mixing with the gas to be cleaned. The process is advantageously carried out in a filter housing (10) wherein the filter candles (6) are connected to laterally spaced apart supporting collectors (7). The filter candles (6) in one level are separated from the filter candles (6) in the level thereabove by an ash removal mantle (15). (FIG. 1)

Apparatus for cleaning dust-laden hot gas

A burner lance for atomizing a suspension of coal in water by means of an atomizing gas. The lance consists of an inner pipe (1) that the suspension flows through, of an outer pipe (2) radially surrounding the inner pipe and leaving a gap (5) that the atomizing gas flows through, and of a nozzle (10) that narrows in the direction the suspension flows in and communicates with both the inner and the outer pipe. The outer pipe extends along the burner beyond the inner pipe and accommodates a nozzle (10) in that section. The outside diameter of the nozzle equals the inside diameter of the outer pipe. The nozzle tapers at a central angle of 35.degree. to 45.degree. and terminates in a concentric exit (11).

Furnace lance for atomizing a coal-water suspension

A combination gas-turbine and steam-turbine process and a power plant that utilizes the process. A waste-heat recovery system with a steam-circulation system is downstream and a pressurized furnace with a combustion chamber is upstream of a gas turbine. Flue surfaces that heat air are accommodated in the furnace. A pressurized gasifier parallels the furnace. Flue gas from the furnace, preheated combustion air, and combustion gas from the gasifier are forwarded to the combustion chamber. The heat of combustion liberated in the furnace by heating the flue gas to beyond its combustion temperature is transmitted exclusively to the combustion air being forwarded to the combustion chamber.

Combined gas/steam turbine process

A device for transferring solid particles from an area of higher pressure to one of lower pressure. A stack-up section (3) between the areas is full of particles and large enough to reduce the current of gas flowing through the open stack-up section from the area of higher pressure as a result of the pressure loss that occurs in the stack-up section to a level that prevents pneumatic conveyance of the particles. A conveyor is in or at the end of the stack-up section.

Device for transferring solid particles

A furnace, especially a fluidized furnace with a combustion chamber (1) that gas flows up through and that has a gas outlet provided with a second flue (2) and a precipitator (10) for separating solids from the flue gas. The solids end of the precipitator communicates with the second flue, which accommodates a layer (12) of solid matter. The bottom of the second flue communicates by way of a solids-reintroduction line (14) with the combustion chamber. The second flue is a solids cooler and the precipitator is also a filter.

Furnace, especially a fluidized furnace

Flue dust precipitated from the compressed gas from a fluidized-bed combustion chamber is conveyed by flue gas to an air-lock system while simultaneously being cooled to above the water and acid dew point of the flue gas. As it enters the air-lock system, the dust is separated from the flue gas and, once it has left the air-lock system, the dust is conveyed by air while simultaneously being cooled to a final temperature at which it can be removed.

Method and device for cooling flue dust

A steam generator and a method of burning fuels therein. A combustion chamber of gas-tight pipe walls has a fluidized bed. Above the bed is a free space with an incrementally lower solids density that accommodates heat-convection surfaces. Coarse-particle precipitators communicate with the top of the combustion chamber with their solids-extraction outlet communicating with the fluidized bed through a feedback system. The combustion chamber, its heat-convection surfaces, the coarse-particle precipitators, and the feedback system are surrounded by pressurized vessel. The fuel is burned in the fluidized bed under pressure. Densities of 0.5 to 5 kg of solids per kg of flue gas are maintained in the free space (4) above the bed by means of fluidizing rates of 1 to 5 m/sec. The temperature of and load on the fluidized bed are regulated by the amount of solids returned to the bed.

Growing community of inventors

Mulheim, Germany

Horst Mollenhoff