NEWS

UNIS, in cooperation with its subsidiary UNIS Power, has successfully delivered a Heat Recovery Steam Generator (HRSG) to the German paper mill UPM Nordland Papier in Dörpen. Nordland Papier belongs to the Finnish UPM Group. The HRSG is part of a highly efficient new combined cycle, which is built to secure electrical power supply independently to public grid and to replace old boilers supplying technological steam for paper machines.

The steam generator works in horizontal design, with a support structure integrated into freestanding boiler modules filled with rows of tubes, called 'harps', forming the heating surface of the boiler. It is a single-pressure system with a pipe burner installed between the superheater bundles. The special burner arrangement allows the steam output parameters to be maintained in all operating cases required by paper machines. The paper mill has gained a more modern and much more efficient source of electricity, which will also significantly reduce the amount of CO2 emitted into the air.

During August 2022, the HRSG underwent a 30-day test run including verification tests of the guaranteed parameters. On 1st September according the Contract, the boiler was handed over to the customer for commercial operation.