Hoods


Design

Specific designs for different applications in order to meet the project requirements and based on the combustible available at mill site

The yankee hood can be designed to work with gas, steam or thermal oil operation

With a reinforced frame the hood provides high dimensional stability maintaining its geometry in operation during its whole life cycle


Benefits

Production Increase

Quality improvement

Leakage proof ducts sealing

Designed to allow large thermal expansions without hood frame distortions and keeping drying efficiency



Hoods Line

Monosystem

One single hot air line distributed to both hood sides (wet and dry)

Duosystem

Two independent hot air lines, one for each hood sector allowing an independent temperature control for the dry and wet ends.


Hybrid System



The Hybrid Hood for tissue machines has the target to improve the production capacity, however, with lower energy consumption.

This Hood model, uses the boiler combustion chamber heat to heat up the Hood impingement air of the hood wet end with an approximated temperature of about 300 °C, which is much warmer than temperature achieved by a regular steam heated Hood with an energy consumption much lower than the one of a gas fired Hood


The wet end exhaustion air is used to heat up the Canopy Hood that is assemble on the PM dry end, this avoids internal condensation and possible quality problems of paper quality besides sheet breaks. The Canopy Hood exhaustion heats up the air the goes to the boiler closing the air circuit.

This solution results on quite interesting production numbers with energy consumption (thermal and electrical energy) quite low when compared with the traditional solutions.


Hybrid System



The Hybrid Hood for tissue machines has the target to improve the production capacity, however, with lower energy consumption.

This Hood model, uses the boiler combustion chamber heat to heat up the Hood impingement air of the hood wet end with an approximated temperature of about 300 °C, which is much warmer than temperature achieved by a regular steam heated Hood with an energy consumption much lower than the one of a gas fired Hood

The wet end exhaustion air is used to heat up the Canopy Hood that is assemble on the PM dry end, this avoids internal condensation and possible quality problems of paper quality besides sheet breaks. The Canopy Hood exhaustion heats up the air the goes to the boiler closing the air circuit.

This solution results on quite interesting production numbers with energy consumption (thermal and electrical energy) quite low when compared with the traditional solutions.