Process and device for gasification of waste
AssigneeLinde-KCA-Dresden GmbH
InventorsSiegmar Marschner, Sven Halang
Life of this patent
Estimating the term…
Abstract
Gasification of waste is performed in a gasifier having a gasification space (1) and a liquid rotating slag bath (2). The slag bath (2) is preferably caused to rotate by tangentially injecting gasification medium and/or at least a portion of the waste via a burner toward the surface of the slag bath. Waste with a diameter of to 5 mm is preferably introduced into gasifier (1) above the slag bath (2), while larger waste is preferably introduced directly into the slag bath. Slag is a removed, together with cracked gas accumulated during gasification through the floor of the gasifier via a slag drain having a lateral opening which protrudes above the slag bath.
Claims23
A process for gasification of waste, comprising:
- introducing waste into a single stage gasifier having a gasification space (1), wherein said gasifier contains a liquid rotating slag bath (2),
- performing gasification of said waste in said gasifier and accumulating cracked gas formed during gasification, and
- removing slag from said gasifier, together with cracked gas accumulated during gasification, via a slag drain having a lateral drain opening (6), wherein said slag drain protrudes above said slag bath (2) and slag flows into said slag drain via said lateral drain opening,
- wherein a first portion of waste substances is introduced above said slag bath and is directed toward the surface of said slag bath, and
- a second portion of waste substances is introduced directly into said slag bath.
An apparatus for gasification of waste comprising:
- a gasifier defining a gasification space (1) and at least one burner oriented tangentially with respect to an internal wall of the gasifier, whereby introduction of waste material, gasification medium, or both, through said at least one burner provides rotation of a slag bath (2) within said gasifier,
- wherein said gasifier has an essentially cylindrical shape with a floor, said gasifier further comprising a slag drain (6) through said floor of said gasifier, said slag drain being concentrically arranged with respect to the axis of said gasifier, and
- said apparatus further comprising a cyclonic furnace (3) defining a post-gasification space, which is in fluid communication with said gasifier, into which slag droplets and flue dust, entrained with cracked gas are precipitated.
Dependencies are inferred from the claim text.