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Drying requirements of wood drying equipment

Number of hits:    Update time: 20 / 09 / 23 08:55:09       Source: 13428888166.cn 大香蕉伊在线视频: close branch      Enjoy:
Through the previous article, I believe you have a general understanding of the equipment. The following describes the drying requirements of wood drying equipment technology, I hope to help you.
1. Drying stage of wood drying equipment: the operation shall be carried out according to the requirements of process standard. The temperature fluctuation should be prevented in the heat preservation stage, and the temperature rising too fast should be prevented during the adjustment of the reference stage.
2. Preheating temperature is determined according to different tree species and thickness. The initial preheating temperature is generally not more than 45 ℃, most of which are lower than 40 ℃. When preheating, the wood should be heated before entering the drying stage. Spray steam if necessary;
3. Intermediate treatment: the intermediate treatment is to spray steam into the kiln to adjust the humidity of the air in the kiln. During the drying process, the rate of wood moisture change should be observed and recorded. Operators should enter the kiln to observe whether there are cracks or deformation on the wood surface. If it happens, be sure to record and mark. According to the decrease of wood moisture content and the change of wood surface, steam is injected into the kiln in time. Steam injection time should be guaranteed, but not too long. Generally, the thickness of one centimeter is 2.0 hours. The intermediate treatment temperature is consistent with the requirements of the reference stage, and the relative humidity is 5 ~ 8% higher than the equilibrium moisture content in this stage
4. Balanced treatment of wood drying equipment: it is to eliminate the difference of moisture content of different wooden piles in the kiln, and ensure that the moisture content of all wood when leaving the kiln meets the requirements. After drying to the later stage, it can be found that most of the probes have high moisture content, and a few of them meet the requirements. In order to make all the wood in the kiln pass through the kiln, balance treatment is needed. The equilibrium treatment temperature is consistent with the standard requirement, and the relative humidity is 2% lower than the moisture content. The time is until the water content of each probe is uniform;
5. At the end of high humidity treatment, the internal and external heterogeneity of wood thickness was eliminated. The relative humidity is 4% higher than that of equilibrium moisture content.
6. Cooling out of kiln: the temperature is relatively high at the later stage of drying. In order to prevent the hot wood from bursting, it is necessary to cool the wood before it comes out of the kiln.

The above is a small series of wood drying equipment drying technical requirements. If you have any other questions, please consult our website.

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