Energy-efficient yankee dryer hood system
US7716850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Dec 23, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F5/181
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper machine configured as a swing machine capable of producing both light and heavy grades providing a Yankee hood split into a wet end half and a dry end half, at least one hood half being a flex-hood half wherein the supply for that half is capable of being run with either combustion heat or recycled heat and is capable of either recirculating the exhaust from the hood or discharging it to the atmosphere. The heater for the flex-hood half comprises both a primary combustion heat source and an indirect heat source capable of extracting by-product heat from another operation. The exhaust system for the flex hood half is capable of being run in either a straight through mode or in a recirculating mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.