Method and system in a paper machine and software product
US7811414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2005 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Jul 16, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention comprises a method and a system in a paper machine, and also a software product, allowing one or more tools to be generated for indicating the state of the paper production process in terms of energy consumption to the operating staff of the paper machine. This allows continual monitoring of the state of the paper production process and/or its energy efficiency combined with efforts to develop the manners of running the paper machine and its dryer section in a more favourable direction. In one embodiment of the invention, the dry solids content DSC of the press section can be calculated by means of the evaporation amount of the dryer section, the production of finished paper and the final paper moisture as follows: DSC=mpap,d/(mpap,d+mH2O), in which mpap,d is the dry mass flow of the paper web to the dryer section and mH2O is the water mass flow to the dryer section. mH2O is obtained by summing up the mass flow of the water discharged from the dryer section and the evaporated water mass flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.