Abstract: A liquid-cooled cooling screen for an entrained-flow gasifier for gasification of fuels in dust or liquid form using a gasifier agent containing free oxygen, at pressures between atmospheric pressure and 8 MPa and gasification temperatures between 1200 and 1900° C. The liquid-cooled cooling screen of which the cooling pipes in the central cylindrical section have thinner walls than the cooling pipes in the lower and upper conical sections. A cooling screen design has sufficient strength under high pressure difference over the cooling screen wall, a pipe wall thickness which ensures reliable operation of the cooling screen and high heat throughput, and pressure equalization between the cooling screen gap and the reaction chamber under all operating circumstances.

Abstract: An apparatus for a three-stage cooling and scrubbing system for the treatment of hot crude gases and liquid slag downstream of an entrained flow gasification. Crude gas and slag are firstly cooled and prescrubbed in a first stage by injection of water from ring and/or wall nozzles into a free quench space. Crude gas and slag are then fed together with excess water into a waterbath as a second stage before intensive spraying is once again carried out as a third cooling and scrubbing stage in an annular space.

Abstract: Separation of dust in a quenching device arranged downstream of an entrained-flow gasification system is increased by a baffle with a double deflection system for deflecting the crude gas at approximately 180° angle. An additional spraying element is provided. The arrangement can be single-sided or double-sided, or can include an additional weir.

Abstract: An apparatus for a three-stage cooling and scrubbing system for the treatment of hot crude gases and liquid slag downstream of an entrained flow gasification. Crude gas and slag are firstly cooled and prescrubbed in a first stage by injection of water from ring and/or wall nozzles into a free quench space. Crude gas and slag are then fed together with excess water into a waterbath as a second stage before intensive spraying is once again carried out as a third cooling and scrubbing stage in an annular space.

Abstract: Separation of dust in a quenching device arranged downstream of an entrained-flow gasification system is increased by a baffle with a double deflection system for deflecting the crude gas at approximately 180° angle. An additional spraying element is provided. The arrangement can be single-sided or double-sided, or can include an additional weir.

Abstract: In a reactor for gasification of entrained solid and liquid fuels at temperatures between 1,200 and 1,900° 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.

Abstract: In a reactor for the gasification of solid and liquid fuels in the entrained flow at temperatures between 1200 and 1900° C. and pressures between ambient pressure and 10 MPa with an oxidizing agent containing free oxygen, the cooling screen is connected in a gas-tight manner to the pressure shell via a bellows compensator to accommodate linear deformation. Continuous sweeping by gas of the annular gap between pressure shell and cooling screen is unnecessary and backflow by producer gas is prevented.

Abstract: An entrained bed gasifier for operation with particulate or liquid fuels is provided. A reaction chamber defined by a cold screen and a quenching chamber connected to the reaction chamber using a crude gas and slag outlet, wherein at least the cold screen is enclosed by a pressure-resistant pressure mantle. The annular gap between the cold screen and pressure jacket may be filled with a fluid, for example, water or heat transfer oil. A rough pressure equalization between the gasification chamber and the annual gap may be guaranteed using a connection between the annular gap and the quenching chamber or the crude gas line, hence the pressure in the gasification chamber normally remains slightly higher than in the inner water jacket.

Abstract: An entrained bed gasifier for operation with particulate or liquid fuels is provided. A reaction chamber defined by a cold screen and a quenching chamber connected to the reaction chamber using a crude gas and slag outlet, wherein at least the cold screen is enclosed by a pressure-resistant pressure mantle. The annular gap between the cold screen and pressure jacket may be filled with a fluid, for example, water or heat transfer oil. A rough pressure equalization between the gasification chamber and the annual gap may be guaranteed using a connection between the annular gap and the quenching chamber or the crude gas line, hence the pressure in the gasification chamber normally remains slightly higher than in the inner water jacket.

Abstract: In a reactor for gasification of entrained solid and liquid fuels at temperatures between 1,200 and 1,900° 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.

Abstract: In a reactor for the gasification of solid and liquid fuels in the entrained flow at temperatures between 1200 and 1900° C. and pressures between ambient pressure and 10 MPa with an oxidizing agent containing free oxygen, the cooling screen is connected in a gas-tight manner to the pressure shell via a bellows compensator to accommodate linear deformation. Continuous sweeping by gas of the annular gap between pressure shell and cooling screen is unnecessary and backflow by producer gas is prevented.