Steam recovery

Valmet has experience with steam separation in many processes since the 80’s. With this experience Valmet has developed a steam separator for the recovery of steam in the Defibrator system. Valmet Steam Separator PV is a mechanical steam separator that separates the steam from the fibers efficiently. A solution that helps to recover energy in the blow line.

Reduction in boiler load

Maximum separation at any production level

Reduces total steam consumption in the system

Eliminates the need of fresh steam for pre-steaming

With Valmet Steam Separator PV it is possible to remove the need for fresh steam to the pre-steaming bin, and as a result reduce the total fresh steam consumption in the system up to 50%. In practice this means that it’s possible to reduce the need for fresh steam going to the Defibrator system and by that save the cost for producing steam that earlier was needed.

Case - cost savings with steam separator PV in Defibrator system

	Before	After
Production	30 bdmt/h
Specific energy	110 kWh/t
Total fresh steam per ton fiber produced	375 kg/bdmt	224 kg/bdmt
Chip temperature after presteaming	90-95°C
Fresh steam usage for presteaming	4,6 t/h	0 t/h
Total fresh steam for system	11,2 t/h	6,7 t/h
Steam to dryer	9,8 t/h	4,8 t/h
Result		~40% Total steam reduction ~400k€ Estimated cost savings per year*

*Calculation based on selling electricity to the grid for 90 EUR/MWh

Valmet’s new technology increases profits and has positive effects on the environment

Sep 21, 2018

XinXin Wood in China has installed two of Valmet’s new products in their newest MDF line which was started up in 2014

PeriVapor brings greater profitability to Hansol HomeDeco, South Korea

Jul 3, 2017

In March 2017, Hansol Home Deco in South Korea installed the Valmet Mechanical steam separator (PeriVapor) directly after the Valmet defibrator on the mill’s line for Core fiber production.

PeriVapor saves energy at the first mill scale trail at BHW Beeskow, Germany

Oct 18, 2016

The mechanical steam separator can divert up to 50% of the generated steam from the fiber flow for recycling in the pre-steaming bin.

Our expertise is at your service

Our focus is to bring your performance forward utilizing our extensive experience and in-depth knowledge of pulp process technology. Get in touch with our experts through your local Valmet office, or the link below.