Paper/Board
Multicylinders drying
- 6 Total hours
- 15 Courses
- Available languages : French, English & Spanish
- Compatible with : computer, tablet & telephone
- Internet access requested
- Unlimited access for a year
- Log in informations sent within 48hours
- To learn the basics of thermodynamics and aeraulic concepts
- To identify the fluids used, the facility set up and the regulations of the drying section
- To control the wires and adjust their tension and conditioning
- To adjust the parameters of the steam and the condensate networks, the aeraulics and the printouts according to the incoming paper, the paper produced and the energy costs
- Operators (from new to experimented), technicians and new comers engineers working in Paper/Board Industries
- Technicians and new comers engineers working in related domain of Paper/Board Industries
Generalities on drying (20mins)
- Water elimination cost
- Role of the drying section
- The different drying steps
Steam and condensates installations (25mins)
- Process components
- Role and location of the equipments in the drying section
- The different states of the water inside the process circuit
Ventilation installations (20mins)
- Ventilation process components
- Role and location of the equipments in the drying section
- Air properties at different locations in the process
Notions related to steam and condensates process (30mins)
- Thermodynamic notions
- Pressure notions
- The different types of steam
Flash steam circulation (20mins)
- The installations in details
- The different process of flash steam recirculation
- Water/Steam path in the process
The equipments of the steam and condensates circuits (30mins)
- Working principle of the equipments of the circuit
- Control parameters
Steam and condensates management (25mins)
- Management of the temperature, pressures, deltaP...
- Control loop of the steam and condensates
- Drying curves
Notions related to ventilation process (20mins)
- Definition of the different air humidities
- Absorption capacity
- Relations between the concepts
The equipments of the ventilation process (30mins)
- Description and working principle of the equipments
- Control parameters
Ventilation management (15mins)
- Air humidity management
- Ventilation control loops
The drying fabrics (20mins)
- Design
- Drying fabric characteristics
- Drying fabric paths
The good fonctionning of the drying fabric (15mins)
- Fabric guiding
- Fabric tension
- Fabric cleaning
Impact of the process on the drying section (25mins)
- Impact of fiber types
- Fiber composition
- Refining
- Sheet formation and pressing on the drying section
Parameters and drying section management (40mins)
- Drying parameters
- The draws
- Defects related to drying
machine management
Drying efficiency (25mins)
- Energy comsumption
- Energy recovery
- Drying section efficiency
