Steaming Chambers and Combined Dry-kilns
Wood steaming treatment chambers have the purpose to homogenize and slightly modify the coloring of wood, remove any presence and effect of parasites, in order to make wood more workable.
Steaming Chambers
STEAMING CHAMBERS
Plants are featured by insulation from air tightness and corrosion resistance typical of saturated steam environments with high concentration of tannic acid and internal temperatures that can also exceed 100°C. Plants can be equipped with direct or indirect steam distribution. With the option of indirect distribution to create steam we can use , high pressure steam, overheated water ( 110°C) or diathermic oil. Direct system needs low pressure steam to be sent to the steamer.
COMBINED DRY-KILNS
This system performs both the vaporization and drying function in a single chamber. This solution is recommended for certain products, operating conditions and production lines. It significantly reduces the handling costs and optimizes consumption of the wood treatment process. Plants can be equipped with direct or indirect steam distribution. With the option of indirect distribution to create steam we can use, high pressure steam, overheated water ( 110°C) or diathermic oil. Direct system needs low pressure steam to be sent to the steamer.
Insights
![$immagineapprofondimento['alt']](https://www.bigondry.com/wp-content/uploads/2020/11/steaming2-scaled.jpg)
Direct Steaming
The steam is injected into the compartment containing the wood through a series of perforated pipes under the stack, along the three walls. The steam must be saturated or nearly saturated, with a maximum pressure of 0.3 bar (in the pipeline) and must expand in the cell until it reaches atmospheric pressure. If you do not have saturated steam, it must be moistened (the steam is blown against the water made to enter under the steam tube in a special channel). The holes in the pipe must be turned towards the floor and not against the wood in order not to cause local overheating and drying.
![$immagineapprofondimento['alt']](https://www.bigondry.com/wp-content/uploads/2020/11/vap-indiretta-1.jpg)
Indirect Steaming
The steam is produced inside the vaporization cell by bringing the water contained in special stainless steel tanks to a boil, arranged below the floor level, along the three walls not affected by the door, under the stack. Inside these tanks there is a traditional / direct heating coil in which superheated water / gas flows as a thermal agent. Using this system it is necessary to keep the water level in the tanks constant.
![$immagineapprofondimento['alt']](https://www.bigondry.com/wp-content/uploads/2020/11/DSCN0810-1.jpg)
Heating Systems
BIGonDRY Srl has developed various vaporization systems, depending on the thermal agent available and the energy generator used. In the vaporization cell, the steam can be obtained in a “direct” way (direct injection of saturated steam, at low pressure) or in an “indirect” way (evaporation of the water contained in special tanks inside the cell).
![$immagineapprofondimento['alt']](https://www.bigondry.com/wp-content/uploads/2020/11/IMG_2322.jpg)
Control System
Both systems described above are controlled by a microprocessor, developed directly by BIGonDRY Srl in collaboration with a software house. This system allows the step-by-step control of the cycle phases according to Time and Temperature. Each program can be registered with a code, recalled, modified and reused for subsequent cycles.
Optionals
Openings Systems
We can provide different opening system solutions according to the specific needs of the customer, simple, space-saving and safe solutions!
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Protecting Walls
Aluminum profiles that allow you to protect the kiln walls.
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Heat Recovery System
The heat exchanger is designed in order to exploit as much as possible the exchange of heat of hot air flowing out of the kiln and transfer as much energy as possible to the fresh air flowing in, saving 15-20% of energy.
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