Siemens Aktiengesellschaft

Horst Hoppe

Frank Hannemann

Tino Just

Manfred Schingnitz

Dietmar Degenkolb

André Herklotz

Darek Schmauch

Devices for a three-stage scrubbing system for treatment of hot crude gases and liquid slag by an entrained flow gasification. Crude gas and slag are conducted downward into a water bath in a central tube. The upper part of the central tube consists of a double-threaded tube screen welded in a gas-tight manner, in which water is injected directly as the first scrubbing and cooling stage in the interior thereof. In the water bath, a bubble column is formed, which simultaneously constitutes the second scrubbing and cooling stage. Surface bodies arranged in three layers increase the scrubbing effect. After leaving the bubble column, the crude gas is again sprayed with water in a cavity, wherein one or more nozzle rings are disposed. This forms the third scrubbing stage. The crude gas then leaves the quenching and scrubbing apparatus in steam-saturated form at 200-220&#xb0; C. and is sent to further treatment.

Divided central tube of a combined quenching and scrubbing system for an entrained flow gasification reactor

For an in-line gasifier having a liquid cooled cooling jacket it is proposed to lead the inlet connectors and the outlet connectors for the cooling liquid through the side of the cylindrical pressure vessel, below the mounting flange for the vessel cover. This achieves a simplification in the mounting of the pressure vessel cover. Particular embodiments concern the bringing together of the upper ends and of the lower ends of several pipe runs coiled in parallel, in each case into a collector pipe which has a connector bush for cooling water.

In-line gasifier having a cooling jacket with pipework passing through the side of the pressure cladding

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Chemnitz, Germany

Horst Hoppe