In the pharmaceutical production process, the drying process is a very important part, in which the hot air circulation oven is of great significance for the drying of the medicine. At the same time, controlling the temperature of the hot air circulation oven makes the hot air circulation oven more energy-saving, which is essential for ensuring the pharmaceutical effect and improving the pharmaceutical efficiency. However, when the pharmaceutical company uses the hot air circulation oven, how can the hot air circulation oven be more energy-efficient, how can we better control the temperature of the hot air circulation oven?
How to make the hot air circulation oven more energy efficient
At the moment when energy conservation and environmental protection are prevalent, pharmaceutical companies must consider energy efficiency, environmental protection and product quality in selecting drying equipment. Therefore, strengthening the energy-saving technology transformation of hot air circulation oven has become a key issue for related drying equipment enterprises. For the energy saving method of the hot air circulation oven, the relevant technicians share the following:
Increase the inlet air temperature of the hot air circulation oven and reduce the exhaust gas temperature of the drying equipment. According to reports, increasing the inlet air temperature of the drying equipment is conducive to improving the thermal efficiency of the oven. However, the inlet air temperature is limited by the product's allowable temperature. â€œIn a co-current oven, the surface temperature of the particles is relatively low, so the inlet air temperature of the drying equipment can be much higher than the allowable temperature of the product,â€ the technician said.
Reduce various heat losses during the drying process. In general, the heat loss of the hot air circulation oven will not exceed 10%, and the heat loss is about 5% if the medium and large production equipment is suitable for heat preservation. Therefore, it is very important to do the insulation work of the drying system, but it is not the thicker the insulation layer, but the thickness of the insulation layer should be determined. The technician said that in order to prevent the leakage of the drying system, the blower and the induced draft fan are generally used in series, "the system is placed in a zero-pressure state after reasonable adjustment, so as to avoid the leakage of the drying medium or the leakage of the ambient air in the hot air circulation oven. The heat efficiency of the oven is reduced."
Reduce the evaporation load of the hot air circulation oven. According to reports, before the material enters the hot air circulation oven, the pre-dewatering treatment such as filtration, centrifugal separation or evaporation of the evaporator can increase the solid content in the material, thus reducing the evaporation load of the oven, which is one of the effective methods for energy saving of the drying equipment. .
How to control the temperature of the hot air circulation oven?
Hot air circulation ovens are of great significance in pharmaceutical production. Temperature control is one of the main issues that need to be paid attention to during the use of hot air circulation ovens. It is reported that the hot air circulation oven temperature range is from room temperature to +250 Â° C, and the high temperature type is from room temperature to +500 Â° C.
Temperature is the main reason that affects the drying effect. Before production, the company needs to thoroughly inspect the hot air circulation oven to eliminate the hazard. Before the hot air circulation oven is turned on, first turn the knob of the temperature protection switch clockwise to the limit position, and then start the machine according to the specified steps of the manual; otherwise, it may cause the alarm to be turned on and the power supply is cut off. At this time, the power needs to be turned off and the temperature is adjusted. Keep the switch and turn it on again.
If the temperature of the temperature is not lower than the temperature set by the meter and the battery is turned off after the power is turned on, the adjustment value of the temperature protection switch is lower than the set temperature value of the meter. This also requires turning off the hot air circulation oven power supply. Re-adjust the thermostat switch and turn it on again.
The hot air circulation oven should pay attention to the temperature control during use, and the temperature control is good to better ensure the drying effect of the medicine. The pharmaceutical industry is a special industry that requires very high levels of production. Drying is an important part of pharmaceuticals. It cannot be ignored. Every detail in the drying process, including temperature control, is an important measure for quality assurance.
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