Siemens Aktiengesellschaft

Noell-krc Energie-und Umwelttechnik Gmbh

Christian Reuther

Manfred Schingnitz

Dietmar Degenkolb

Frank Hannemann

Norbert Fischer

Tino Just

Volker Kirchhübel

Heidrun Toth

Thomas Fleischer

Ralph Schumann

Volker Kirchhuebel

An entrained flow gasifier designed as a component for an Integrated Gasification Combined Cycle plant of optimized efficiency is provided. The raw gas initially flows through a waste heat unit designed as a radiation cooler and subsequently flows through a full water quench. This results in a higher ratio of steam in the raw gas, which decreases the medium-pressure steam supply before the water-gas shift and thus improves efficiency in IGCC plants with COseparation.

Entrained flow gasifier with integrated radiation cooler

In a reactor for gasification of entrained solid and liquid fuels at temperatures between 1,200 and 1,900&#xb0; C. and at pressures between ambient pressure and 10 MPa using an oxidizing agent containing free oxygen, the cooling screen is connected to the pressure shell in a gastight manner via a sliding seal in order to allow length changes. Continuous gas purging of the annular gap between pressure shell and cooling screen is unnecessary and gasification gas is prevented from flowing behind.

Entrained-flow gasifier with cooling screen and sliding seal

Disclosed is a burner for oxidant gasification of pulverized fuels under high pressures, e.g. 80 bar, and temperatures, e.g. 1200 to 1900&#xb0; C., in reactors with liquid slag removal for oxygen gasification. The individual pulverized coal supply tubes in the burner are inclined toward the burner axis in the direction of the burner mouth, are implemented equiareally from the burner inlet up to the burner outlet, and end at the burner mouth adjacent to the oxidant outlet. Owing to the pulverized fuel feeding elements being implemented right up to the burner mouth and the instantaneous entry of the pulverized coal into the rotating oxygen stream there is no longer any areal discontinuity at the dust outlet, since here the pulverized coal stream is immediately sucked into the oxidant stream. At the outlet of the media the individual pulverized coal streams merge into a single rotating pulverized coal/oxygen stream, thereby achieving an even flame spread and stabilization.

Compact pulverized coal burner

An oil/slurry burner with injection atomization for the gasification of solids-containing liquid fuels under high pressures of e.g. 80 bar (8 MPa) and high temperatures of e.g. 1200 to 1900 degrees centigrade in reactors with liquid slag removal is proposed, wherein a plurality of feeding elements disposed outside the annular duct concentrically with respect to the burner axis are provided for introducing liquid fuel and atomizing agent, the individual feeding elements being implemented intrinsically straight in the burner, inclined to the burner axis in the direction of the burner mouth, and ending at the burner mouth adjacent to the oxidant outlet. By introducing the liquid fuel and atomizing agent in individual completely implemented tubes with a corresponding nozzle, different fuels can be supplied simultaneously via the individual feeds and converted in a flame reaction.

Oil/slurry burner with injection atomization

The invention comprises a combination burner for the gasification of pulverized fuels with an oxidation means containing free oxygen at ambient or higher pressures, as well as temperatures between 800-1800&#xb0; C., with the ignition device of the pilot burner with flame monitoring and the pulverized fuel burner being integrated as a combination burner and all operating channels being routed separately from each other up to the mouth of the burner and the media carried by the channels only being mixed at the mouth of the burner. When the pilot burner is dismantled the eddy bodiesattached to its sleeve in the main burner oxidation means supplycan be exchanged quickly and easily and thus the main burner flame adapted in the optimum way to the reaction chamber contour of the reactor.

Combination pulverized fuel burner with integrated pilot burner

The invention relates to a reactor vessel and method for the gasification of carbon-containing fuel, residual and waste materials using an oxygen-containing oxidizing agent and in a reaction chamber which is designed as an entrained-bed reactor, at pressures between ambient pressure and 80 bar, preferably between ambient pressure and 30 bar, the contour of the reaction chamber being delimited by a cooling system, and the pressure in the cooling system always being held at a higher level than the pressure in the reaction chamber, and the cooling system withstanding the maximum possible pressure difference with respect to the reaction chamber, which has been depressurized to atmospheric pressure, which reactor vessel is distinguished by the fact that cooling channels are formed by webs which are in contact both with a refractory protective layer and with the pressure shell.

Growing community of inventors

Freiberg, Germany

Christian Reuther