Nonwoven
Strengths and Characteristics
- Process air management (opening, blending, preparation, carding zone)
- Management and balancing of air ejected from production line
- Recovery and reconversion of thermal energy ejected from hydro-engagement and drying
- Use of ventilated systems with very low energy consumption (plug fan) with frequency changers
- Distribution systems with air processed through low induction displacement systems
Operation
System design is formed starting with the overall study of the production line, obtaining electrical and ventilating utilities, considering the relevant dissipation and dispersions and therefore correctly dimensioning the control units for treatment of the technological areas and conditioning.
Using an adequately dimensioned piping network, the extracted air flow from the production line (technological area) is directed towards the control unit, organised into modules of:
- Pre-filtration
- Filtration
- Micro-filtration
The filtration section is connected using modulating shutters integrated in the conditioning system, in turn composed of:
- Plug fan ventilation module
- Heating section
- Cooling section
- Adiabatic humidification section
The air flow composed as such guarantees maintenance of a constant and controlled thermo-hygrometric condition, capable of stabilising the temperature between 22°C and 26°C with relative humidity from 60% to 70% and maximum tolerance of 2%.
Such adjustment is guaranteed by the PLC, which instantly adjusts the various parameters relating to the probes on site.
Balancing modules
This design is also characterised by balancing modules integrated with the ventilation and conditioning systems, that guarantee a positive pressure condition on the entire line. This is indispensable to maintain the environmental control conditions and drastically reduce the risks of external contamination.
To optimise management costs, Canalair systems include the possibility of recovering thermal energy from volumes unloaded by the Jet Filter and Dryer using exchangers and batteries.
This balancing module is managed by a processor that controls the air flow rates based on process variations. Therefore, the temperature intervals oscillate between 22°C and 26°C with a tolerance of +/- 2°. Positive overpressure of the entire line is also automatically controlled.
Main parts
- Plug fan ventilating systems with the latest generation motors and digital inverters on board
- Adiabatic humidifier systems in stainless steel, saturated and high pressure without recovery of drained water (to avoid bacteria formation)
- Cold exchangers
- Heat exchangers
- Advanced management and control micro-processor
- Recovery systems for drainage water and its sanitation
Applications and intended nonwoven sectors
- Spunlace
- Airlaid
- Needle punch
- Spunbond
Performance and Dimensions
- Total air flow rate: 300,000 m3/h
- Guarantee: rh% 50-70
- T 22-26°C