Andritz Oy

Valmet-ahlstrom Oy

Lasse Koivisto

Kari Saviharju

Jorma Simonen

Olli E Arpalahti

Markku Tanttu

Heikki Laitinen

Jorma Andritz Inc Simonen

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.

Cooling system for ports in a boiler

A spent liquor recovery boiler system including a boiler having a water/steam circulation system with superheaters and a furnace for recovering energy and chemicals from spent liquor combusted therein, the walls of the boiler are formed of a plurality of water-cooled tubes connected to the water/steam circulation system. The system is provided with at least one cavity having walls formed of water-cooled tubes connected to the water/steam circulation system, means for combusting a fuel and at least one outlet for discharging combustion gases to the boiler, the interior of the at least one cavity being provided with heat exchanger means for final superheating of the steam generated in the boiler, said heat exchanger means being connected to the superheaters of the boiler.

System for producing energy at a pulp mill

A spent liquor recovery boiler in the pulp and paper industry including a water/steam circulation system having superheaters, the circulation system connected to a steam turbine comprising a high-pressure part, and a furnace for burning spent liquor to produce flue gases, and including an upper portion through which the flue gases flow, wherein the steam/water circulation system of the recovery boiler is provided with a reheater for reheating steam from the high-pressure part of the turbine.

Apparatus and method for producing energy at a pulp mill

Turbulence generator made of plastic with ceramic coated flow ducts in

Growing community of inventors

Varkaus, Finland

Lasse Koivisto