Cooling system for ports in a boiler
AssigneeAndritz Inc.
InventorsKari Saviharju, Jorma Simonen, Lasse Koivisto, Markku Tanttu
Life of this patent
Estimating the term…
Abstract
A cooling system for air ports and other ports in furnace walls includes a cooling medium pumping system and ports provided with a cooling medium piping or channels inside the metallic port material. The liquid flow generated by the cooling medium system cools the ports. The ports are constructed of a casting material, and the ports are provided with a cooling liquid flow, which passes in a piping or pipings or channels inside the casting material of the ports.
Claims29
A port disposed in wall tubes of a recovery boiler and used for supplying a material flow to the recovery boiler or for positioning a device or equipment, wherein the port comprises:
- a cast material port configured to be fitted between adjacent wall tubes of the recovery boiler and including an opening through the wall tubes, and a cooling system integral to the cast material port, wherein the cooling system includes a cast flow passage in the cast material port and for a cooling medium that includes a liquid wherein the cast flow passage includes an inlet configured to receive the cooling medium entering the cast flow passage, an outlet configured to discharge the cooling medium from the flow passage and wherein between the inlet and outlet, the cast flow passage includes at least two, tubes or channels each adjacent one of opposite sides of the opening and the flow passage extends around the opening.
A port adapted to be disposed between wall tubes of a recovery boiler and providing a passage to the recovery boiler, wherein the port comprises:
- a nozzle structure including an aperture establishing the passage to the recovery boiler, and a cast base in which the aperture is formed;
- the cast base and nozzle structure configured to fit between adjacent tubes of the wall tubes;
- a cooling fluid passage in the cast base, wherein the cooling fluid passage includes an inlet on one side of the cast base to receive the cooling fluid, an outlet to discharge the fluid from the cast base, and at least two tubes or channels in the cast base and between the inlet, wherein the tubes or channels are each adjacent one of the opposite sides of the opening, wherein the cooling fluid passage extends around the perimeter of the opening, and a coupling to attach the cast base to the wall tubes of the recovery boiler.
A port adapted to be disposed in a wall of a recovery boiler and providing a passage into the recovery boiler, wherein the port comprises:
- a nozzle structure including an aperture and a cast base in which the aperture is formed, wherein the passage into recovery boiler is formed by the aperture;
- the nozzle structure configured to fit between adjacent cooling tubes of the wall of the recovery boiler;
- a cast cooling fluid passage integral in the cast base, wherein the cooling fluid passage includes a cooling fluid inlet on a first side of the cast base, a cooling fluid outlet on an opposite side of the cast base, and cooling fluid passage extends between the inlet and outlet, wherein the passage splits into at least two passage segments which are each adjacent one of an opposite side of the aperture, and the cooling fluid passage extends around the aperture, and a coupling to attach the cast base to at least one water tube in the wall of the recovery boiler.
Dependencies are inferred from the claim text.