Replacement drying unit
    Intermittent drying system replacement typical structure , similar to the two-cell vapor degreasing equipment . The system consists of drying pools , cleaning pool , a water separator and two , one and two cooling systems, and a filter recycling system. Small objects to be dried ( such as small metal or plastic parts ) immersed in pure freon replacement fluid filled boiling solvent DF ( the displacer and a surface active agent ) in dry pool water film in a short sharp growth surface of the object and for the large droplets under the action of buoyancy , floating on the surface of replacement fluid . Replacement fluid circulation through the water droplets over the weir plate , through the water separator separated away under gravity . Stay around the pool in the dry parts 30-120 s after washing into pools of pure Freon TF solvent rinse Chuo stranded on the part containing surfactant replacement fluid liquid trace . Then, the parts in the vapor zone (48 ℃) stay a while ( to remove any residual liquid in the parts of the surface displacement ) after removal , will be completed on the part of the drying process. Total drying time ( about 3-5min) depends on the size and complexity of the parts . After cooling to be basic parts can be directly into the next production process . The device requires a continuous flushing tanks to provide freshly distilled solvent for rinsing pure flon parts , and the aqueous surfactant dried with freon remain in the pool . As the solvent carbonitride low solubility in water , together with devices designed to reduce the entrainment so excessive water containing substantially no fluorocarbon . Also , Freon solvent having a boiling point lower solubility in water is low, the washing tub and the steam zone water content is minimal.
    For large parts , can be used a method of replacement fluid ejection off the moisture . Such as the use of replacement drying to dry the fabric fibers or particulate material , you first need to be dried material fixed position , then let dry between fluid forced through the solid frame . In a small test device has been successfully used drying method replacing the artificial fabric fibers dried to a moisture content less than 1% ( mass ) ; dried natural fibers ( eg cotton ) , only the surface moisture removal , the removal of water must be within the combined using R113 superheated steam assisted treatment .
    In a typical drying system configuration , the replacement fluid temperature with small particles ( such as pieces of metal and plastic block ) . Large mixed with solution spray, small miscellaneous textile fibers and particulate matter such as the drying liquid discharge.
    Compared with the heat drying , dry theoretical energy hinder replacement demand is very low, because the energy is only used to destroy the new focus and adsorption . Metal parts in a dry system, the hot air drying and drying as water load conditions at different energy consumption.
    In the case of an empty load , fluorocarbon systems consume a certain energy , as the case if there are no load the solvent was evaporated . During the operation , because there is no water evaporation , energy consumption of the load may be from water is maintained at a stable level . On the contrary . In the case of the water load , air dried lower power consumption ( although not zero , because the energy is only used to heat the dry solid matter ) ; However, as the water content increases , the energy required to evaporate water capacity has increased dramatically . For replacement dry, water load greater than 37.5k8/m3 after each drying process the same amount of energy .