Process of adjusting operation during new wood chip dryer equipment

Shuliy's new wood chip rotary dryer machine equipment is drying equipment for drying wood chips, sawdust, and other materials. It has large drying output, obvious energy-saving and environmental protection effect, and low maintenance, which makes many wastes have their due value. Get the favor of Shuliy users, how to adjust the operation during the use of Shuliy's new wood chip dryer equipment?

The wood chips enter the new wood chip rotary dryer machine equipment, and the composite material plate and the rotary cylinder body work together. The material is boiled and fluidized in the cylinder, and the hot air and the material are fully contacted to complete the drying. The new wood chip dryer equipment consists of three layers of concentric cylinders. The material and hot air flow in parallel along the cylinder of the dryer. The flow is inner cylinder ---- middle cylinder----outer cylinder. Each layer is equipped with a special shape of the guide plate. The material is fired by the material plate in the cylinder to a certain height. It runs along the spiral guide channel under the attraction of the earth and hot air. The material is fully heated in the three-layer cylinder. exchange.

When Shuliy's new wood chip rotary dryer machine equipment is working, adjust the drum speed to 10r/min, start the fan, adjust the frequency converter to make the inlet airflow speed 12m/s, experiment with four groups of materials, and adjust the inlet airflow temperature parameters to The experimental results were obtained at 300 ° C, 350 ° C, 400 ° C, and 450 ° C, and the working parameters were input into a simulation program to obtain simulation results. It can be seen from the experimental results that the inlet gas flow temperature is increased from 300 ° C to 450 ° C under other conditions, the final moisture content of the material * is reduced from 18.7% to 8.1%, the inlet gas flow temperature is increased, and the moisture content of the outlet material is decreased. . Mainly because the inlet air temperature increases, the material moisture diffusion coefficient increases, and the tumble dryer drying speed increases. The inlet gas temperature has a better value. If the temperature is too low, the moisture content of the material is too high, which is not conducive to storage: if the temperature is too high, the material quality will be lowered and the heat energy will be wasted. Comparing the experimental results with the simulation results, the average error is 9.97%.

Adjust the throttle of the burner so that the inlet air temperature is stable at 350 °C, start the new wood chip rotary dryer machine equipment drum drive motor, adjust the drum speed to 10r/min, experiment with four groups of materials, and adjust the inlet airflow speed parameters to 8m/ s, 10 m / s. 12 m / s, 14 m / s. The test results are obtained, and the operating parameters are input into the simulation program to obtain the simulation results. It can be seen from the experimental results that the gas flow rate increases from 8 m/s to 14 m/s under the same conditions. The final moisture content of the material* increases from 7.30% to 18.1%, and the inlet gas flow rate increases. The moisture content of the export material increases, mainly because the airflow speed increases, the material advance speed increases, and the drying time decrease. The inlet gas flow rate has a better value, which is mainly determined by the moisture content of the material suitable for storage. If the speed is too high, the moisture content of the inlet material of the new wood chip dryer equipment is too high, which is not conducive to storage, and the residence time is too long when the speed is too low. Reduced the efficiency of the new wood chip dryer equipment. Comparing the experimental results with the simulation results, the simulated value is higher than the actual value. When the inlet airflow velocity is low, the error is small. When the inlet airflow velocity is high, the error is large, and the average error is 11.28%, which is mainly due to the difference in the number of iterations. .

Adjust the inlet airflow temperature of Shuliy's new wood chip rotary dryer machine equipment, stabilize at 350 °C, the inlet airflow speed is 12m / s, experiment on four groups of materials, the drum speed parameters are adjusted to 6r / min, 8r / min, l0r / min, 12r/min. The test results are obtained, and the working parameters are input into the simulation program to obtain the simulation results. It can be seen from the test results that the drum rotation speed is increased from 10r/min to 12r/min under other conditions. The final moisture content of the material* increases from 9.6% to 16.9%, the drum rotation speed increases, and the moisture content of the outlet material increases. The reason is that the faster the drum rotation speed, the less the lifting time, the greater the percentage of the drop time in the retention time, the faster the advancement, and the shorter the drying time. If the drum speed of the new wood chip dryer equipment is too small, the heat energy loss will be too large, and the drum rotation speed will cause the water content of the outlet material to be high. Comparing the experimental results with the simulation results, the average error was 14.31%.