Compared with adsorption drying, freeze dryers have the following characteristics: ①No air source consumption. For most air source users, using freeze dryers saves energy than using adsorption dryers; ②No valve wear; ③ No need to add or replace adsorbents regularly; ④ Low operating noise; ⑤ Routine maintenance is relatively simple, as long as the automatic drain filter is cleaned on time; ⑥ There are no special requirements for pre-treatment of air source and supporting air compressor The oil-water separator can meet the requirements of the freeze dryer for the quality of the intake air; ⑦ The freeze dryer has a "self-cleaning" effect on the exhaust gas, that is, the content of solid impurities in the exhaust gas is less; ⑧ While discharging condensed water, some Oil vapor can also be condensed into liquid oil mist and discharged with condensed water. Compared with the adsorption dryer, the "pressure dew point" of the compressed air treatment by the freeze dryer can only reach about 10 °C, so the drying depth of the gas is far less than that of the adsorption dryer. The machine cannot meet the requirements of the process for the dryness of the air source. A selection convention has been formed in the technical field: when the "pressure dew point" is required to be above zero, the freeze dryer is the first choice, and when the "pressure dew point" is required to be below zero, the adsorption dryer is the first choice.

FROM:ningboxinzhi