Abstract: The present invention provides a process and apparatus for converting feedstock comprising biomass and/or carbon-containing solid waste material to synthesis gas. The process comprises supplying the feedstock to a gasifier comprising a fluidized bed zone and a post-gasification zone and contacting the feedstock with a gasification agent at a plurality of different operating temperatures based on the ash softening temperature of the feedstock and finally recovering the synthesis gas. The apparatus is configured to perform the process and comprises a plurality of nozzles arranged at an acute angle relative to a horizontal plane of the gasifier.

Abstract: The present invention provides a process and apparatus for converting feedstock comprising biomass and/or carbon-containing solid waste material to synthesis gas. The process comprises supplying the feedstock to a gasifier comprising a fluidized bed zone and a post-gasification zone and contacting the feedstock with a gasification agent at a plurality of different operating temperatures based on the ash softening temperature of the feedstock and finally recovering the synthesis gas. The apparatus is configured to perform the process and comprises a plurality of nozzles arranged at an acute angle relative to a horizontal plane of the gasifier.

Abstract: The invention relates to an aftertreatment arrangement (1.0) for the aftertreatment of at least gases downstream of a fluidized bed gasification process, in particular downstream of an HTW gasifier (1) of a pressure-loaded fluidized bed gasification process, having a particle separation unit (2; 11) which can be arranged downstream of the fluidized bed gasification process and upstream of a gas cooler (3) that can be used for the further aftertreatment of the gases, wherein the aftertreatment arrangement comprises an intermediate cooling unit (12) which can be arranged downstream of the fluidized bed gasification process and upstream of the particle separation unit (11), having a return (B1) for gasification steam (B) that can be coupled to the fluidized bed gasification process. Furthermore, the invention relates to a method for the aftertreatment of at least gases downstream of a fluidized bed gasification process as well as the use of an intermediate cooling unit.

Abstract: The present invention provides a process and apparatus for converting feedstock comprising biomass and/or carbon-containing solid waste material to synthesis gas. The process comprises supplying the feedstock to a gasifier comprising a fluidized bed zone and a post-gasification zone and contacting the feedstock with a gasification agent at a plurality of different operating temperatures based on the ash softening temperature of the feedstock and finally recovering the synthesis gas. The apparatus is configured to perform the process and comprises a plurality of nozzles arranged at an acute angle relative to a horizontal plane of the gasifier.

Abstract: The invention relates to an aftertreatment arrangement (1.0) for the aftertreatment of at least gases downstream of a fluidized bed gasification process, in particular downstream of an HTW gasifier (1) of a pressure-loaded fluidized bed gasification process, having a particle separation unit (2; 11) which can be arranged downstream of the fluidized bed gasification process and upstream of a gas cooler (3) that can be used for the further aftertreatment of the gases, wherein the aftertreatment arrangement comprises an intermediate cooling unit (12) which can be arranged downstream of the fluidized bed gasification process and upstream of the particle separation unit (11), having a return (B1) for gasification steam (B) that can be coupled to the fluidized bed gasification process. Furthermore, the invention relates to a method for the aftertreatment of at least gases downstream of a fluidized bed gasification process as well as the use of an intermediate cooling unit.

Abstract: The invention relates to an oxygen lance that has at least three mutually coaxial pipes, each of which delimits at least one annular gap. The outermost pipe is designed to conduct superheated steam and has a steam supply point, the central pipe is designed as an annular gap, and the innermost pipe is designed to conduct oxygen at a temperature of no higher than 180° C. and has an oxygen supply point. A temperature sensor is arranged within the innermost pipe, said temperature sensor extending to just in front of the opening of the innermost pipe. The innermost pipe tapers in the form of a nozzle before opening; the innermost pipe opens into the central pipe; and the opening of the central pipe protrudes farther relative to the opening of the outermost pipe.

Abstract: A method for heating a high-temperature Winkler gasifier during the start-up of the gasifier includes the use of at least one burner for heating purposes. A gasifier head of the Winkler gasifier is assigned a cyclone with a return conduit for returning the particles separated off in the cyclone into the fluidized bed in the lower region of the gasifier, by means of which method the heating of a high-temperature Winkler gasifier is simplified and made substantially independent of the structural size of the gasifier. The at least one burner, which is installed in the head region of the gasifier and which acts downward into the interior of the gasifier, allows gas flow to be generated in the reverse direction through the return conduit of the cyclone.

Abstract: The invention relates to an oxygen lance that has at least three mutually coaxial pipes, each of which delimits at least one annular gap. The outermost pipe is designed to conduct superheated steam and has a steam supply point, the central pipe is designed as an annular gap, and the innermost pipe is designed to conduct oxygen at a temperature of no higher than 180° C. and has an oxygen supply point. A temperature sensor is arranged within the innermost pipe, said temperature sensor extending to just in front of the opening of the innermost pipe. The innermost pipe tapers in the form of a nozzle before opening; the innermost pipe opens into the central pipe; and the opening of the central pipe protrudes farther relative to the opening of the outermost pipe.

Abstract: Disclosed is a system and method for cooling and relieving pressure of the bottom product produced by the fluidized-bed gasification of biomass, brown coal, or hard coal having a high ash content. With such a method and system, an economic solution for cooling and pressure expansion of the bottom product produced is to be ensured, which is achieved by the bottom product leaving the fluidized bed at a maximum of 1500° C. and a pressure of up 40 bar, being fed to an intermediate store, then being fed from the intermediate store to a pressure tank having a cooling system, and then being fed to a pressure release system.

Abstract: The present invention relates to a process for the combustion of fuel (5) supplied to the combustion zone (2) of a burner (1), using oxygen or a mixture of oxygen and carbon dioxide. The invention further relates to a burner for carrying out the process of the invention. To provide a process allowing stable combustion of the fuel using oxygen or a mixture of oxygen and carbon dioxide at a carbon content of less than 21% by volume, the invention proposes a cyclic flow (8) being created in the combustion zone (2) through which a homogeneous mixing of hot combustion products with the fuel (5) and the oxygen on the one side and with the fuel (5) and the mixture of oxygen and carbon dioxide on the other side takes place in the combustion zone (2).