Method for deslagging a cyclone furnace
AssigneeJet Research Center, Inc.
InventorLinza J. Jones
Life of this patent
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Abstract
A method and apparatus for deslagging a cyclone furnace in which a series of flexible hollow tubes are inserted into the combustion chamber and the explosive charges in each hollow tube are detonated sequentially. Each of the hollow tubes is biased outwardly against the accumulated slag and ash in the combustion chamber. The hollow tubes may be formed in arcs or rings in planes perpendicular to the longitudinal axis of the combustion chamber, and spacer rings may be positioned between each ring.
Claims10
A method for fracturing slag and ash on the interior surfaces of a combustion chamber, comprising the steps of:
- inserting explosive charges into a plurality of hollow flexible tubes;
- placing each hollow tube at a preselected location in the combustion chamber such that the hollow tube is biased outwardly against the ash and slag covering the interior surface of the combustion chamber;
- placing a linear shaped charge along a selected surface of the combustion chamber;
- and
- detonating the explosive charges in a preselected sequence, whereby vibrations are established in the combustion chamber fracturing the ash and slag and whereby the explosion of the linear shaped charge is directed generally toward the thickest portion of accumulated slag.
A method of fracturing and removing slag and ash from the interior wall of a combustion chamber having a longitudinal axis, comprising the steps of:
- cutting a plurality of flexible hollow tubes into lengths sufficient to form a plurality of substantially 360.degree. rings on planes perpendicular to the longitudinal axis of the combustion chamber;
- inserting explosive cord into each of the hollow tubes;
- positioning each of the hollow tubes in the combustion chamber such that each hollow tube is biased outwardly against the slag on the interior wall of the combustion chamber;
- positioning a plurality of spaces between each 360.degree. ring in the combustion chamber, the spacers being parallel to the longitudinal axis of the combustion chamber;
- positioning at least one linear shaped charge along a bottom surface in the combustion chamber;
- detonating the explosive cord in each 360.degree. ring in a preselected sequence whereby the slag and ash is fractured from the walls of the combustion chamber;
- detonating each linear shaped charge in a preselected sequence whereby the explosive charge is directed generally downwardly against a preselected portion of the accumulated slag and ash;
- and
- removing the fractured slag and ash from the combustion chamber.
Dependencies are inferred from the claim text.