The traditional method of wood drying is natural drying by sun exposure, but this method is slow, occupies large space, and has low drying efficiency. Although there are some wood drying equipment, they have low thermal efficiency and high energy consumption. Moreover, most of them adopt the method of introducing hot air from the bottom. Bottom hot air inlet often causes the bottom wood to be heated for a long time, which may even lead to charring of the wood if overheated for too long, while other parts of the wood cannot be fully heated, resulting in uneven heating and drying of the wood in the drying chamber. This affects the drying efficiency and quality of the wood. Changing the traditional bottom air inlet to end air inlet avoids the hidden danger of the bottom of the stack being in contact with high temperature for a long time, which is prone to carbonization and spontaneous combustion. This electric air heater for wood drying (duct type air electric heater) has a reasonable layout, high thermal efficiency, and rapid temperature rise. It has two humidity adjustment methods: hot water and steam. According to the process requirements during drying, timely humidity adjustment is carried out, and the wood drying is uniform with good results. When using wood waste as fuel, production costs are reduced. When using electric heating, labor is saved. At the same time, for wood products that have undergone deep processing such as heating or pressurization upon import, such as wooden doors, wooden windows, wooden mirror frames, picture frames, wooden tools, wooden furniture, plywood, etc., the official quarantine department of the exporting country (region) is not required to issue a heat treatment certificate. If official phytosanitary certificates cannot be provided, inspection declaration can also be accepted. Each bureau may implement quarantine according to the specific conditions such as the wood species, degree of processing, and epidemic situation of the exporting country (region).
