论文部分内容阅读
在轴流型蒸汽干燥室条件下,用强化干燥工艺干燥30～35毫米厚的云、冷杉材是可行的.采用的快速高温低温的强化工艺能大大缩短干燥时间,确保干燥质量.如在1小时内升温到干、湿球均为100℃时,维持2小时调湿处理;迅速转入干燥阶段,室内空气温度干球控制为105±3℃,湿球温度保持为70±2℃,风速为1米/秒左右的情况下;木材由初含水率60～80%干燥到终含水率为8～10%,只需16～24小时.全室干燥均匀度精确度指标为2.84%,在科学试验的数理统计标准5%的范围以内.木材不裂不翘,材质优良.功效提高2～4倍,节约了能源,降低了成本,经济效益显著.为现有常规蒸汽干燥室采用强化干燥工艺闯出了新路.高山的云杉、冷杉是西南林区的主要材种,多年来,不少企业均采用轴流型常规蒸汽干燥室进行干燥.由于干燥时间较长,生产效率较低,不能适应生产发展的需要.在“电热远红外线干燥木材”新工艺的启示下,探索出云、冷杉材强化干燥新基准,快速高温低湿干燥工艺.在我厂长轴型常规干燥室的情况下,通过半年多连续性试生产,获得的干燥效果,不仅干燥时间成倍缩短,干燥质量显著提高,合符军品的技术质量要求;而且节能突出,单位成本大大下降,经济效益显著.
In the axial flow steam drying chamber conditions, the use of enhanced drying process drying 30-35 mm thick clouds, fir material is feasible.Adopting the rapid high temperature and low temperature of the strengthening process can greatly shorten the drying time and ensure the quality of the dry, as in 1 The temperature was raised to dry in the hour and the wet bulb was maintained at 100 ° C for 2 hours, and quickly transferred to the drying stage. The indoor air temperature was dry-controlled at 105 ± 3 ° C and the wet-bulb temperature was maintained at 70 ± 2 ° C. The wind speed Is about 1 m / s; wood from the initial moisture content of 60 to 80% drying to a final moisture content of 8 to 10%, only 16 to 24 hours. The accuracy of the whole chamber uniformity of 2.84% Scientific test mathematical statistics standards within 5% of the range. Wood is not cracked Alice, excellent material. Efficacy increased by 2 to 4 times, saving energy, reducing costs, significant economic benefits. For the existing conventional steam drying room with enhanced drying Craft break a new road.Alpine spruce, fir is the main timber species in the southwest forest area, many companies are using axial conventional steam drying chamber for drying.As the drying time is longer, the production efficiency is lower , Can not meet the needs of the development of production in the "electric far infrared Under the enlightenment of the new technology of dry wood, explore the new benchmark of drying of fir and fir wood, fast drying process of high temperature and low humidity.With the long axis type conventional drying room of our factory, Effect, not only double the drying time is shortened, significantly improve the quality of dry, consistent with the technical quality requirements of military products; and energy-saving prominent unit costs greatly reduced, significant economic benefits.