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| Rotary dehumidifiers of Songjing Electrical Appliance include numerous specifications of standard rotary dehumidifiers and assembled rotary dehumidifier units, such as standard type, energy-saving type, low regenerative temperature type, low dew-point?type, etc. These products meet the requirements of all kinds of working environment and air parameters, and control the temperature and humidity at the same time; this company is able to produce non-standard dehumidifying equipment according to clients’ demands. |
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一, Overview of Songjing rotary dehumidifiers
Thanks to its outstanding energy-saving and environment-friendly advantages, absorption rotary dehumidifiers have been recognized as one of first-choice technology to replace CFC′s compressed refrigeration and dehumidification. This machine reduces air humidity quickly, easily and effectively, and applies to normal temperature low-humidity, low-temperature low-humidity and other dehumidifying fields where other refrigerating methods cannot apply. In particular, after treated by assembled rotary dehumidifier units, air dew-point?reaches below -70℃; Moreover, this product makes use of low-grade heat energy to be its regenerative energy, including industrial residual heat, waste heat, solar energy, natural gas and so on. Therefore, this product boasts environment-friendly capability and low energy consumption. It is widely used in such industries as food, medicine, electronics, electrical appliance, chemical, national defense, printing and other industries that require specific humidity. Under high-temperature high-humidity circumstances, absorption rotary dehumidifiers will exert their unique advantage, and bring huge economic benefits to enterprises.
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二, Basic structure and working principle of Songjing rotary dehumidifiers
Core part of a rotary dehumidifier is a cellular runner. The runner is a compound of special ceramic fiber carrier and activated silica gel; both sides of the runner are divided by purpose-made sealing device into 2 zones---Treatment Area and Regenerative Area; when moist air goes through Treatment Area of the runner, water vapor of moist air is absorbed by activated silica gel, while dry air is sent to anther area by the fan; slowly rotating runner carries nearly saturated water vapor into Regenerative Area; in the Regenerative Area, water in the runner is desorbed by reversely injected high-temperature air, and discharged out of the room by the fan. In this way, the runner restores dehumidifying capability, and completes the regeneration process. As the runner rotates consistently, above dehumidification and regeneration go on and on, and the rotary dehumidifier maintains its continuous and stable dehumidifying state.
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Water molecules in the air are absorbed by hydrophilic groups in micro pores of silica gel; capillary structure in micro pores also absorbs lots of water molecules. |
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Heated air warms up Regenerative Area. As a result, absorbed water molecules in micro pores are activated, weaken their absorption capacity, and discharge from micro pores of silica gel. |
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Songjing rotary dehumidifiers adopt efficient runners of Japanese SEIBU and NICHIAS joint-stock corporation; through patent technology and a kind of inorganic adhesive, ceramic fiber is processed into cellular shape, because all organic substances are removed by high-temperature burning. After polymerization reaction, the runner with cellular matrix integrates special silica gel (metal silicates). As a result, this runner is equipped with superior heat resistance, and applicable to any humidity conditions; it boasts strong dehumidifying capability, no loss of dehumidizer, avirulence and non-corrosiveness, which ensure safe and stable operation for a long time; since this runner adds hydrophilic groups and micro pores to absorb more water, under the same air conditions, its drying capability has been 20%～30% stronger than other silica gel runners.
In molecular sieve runner, special synthetic zeolite is put into ceramic fiber matrix as the dehumidizer, because zeolite has very small pores and very strong heat resistance. This runner is applicable to low dew-point circumstances, or to deal with gases with such volatile organic compounds as ethylene glycol, acetaldehyde and so on; maximum 220℃ regenerative air can be used in the runner, and polymerization reaction seldom takes place in all runners; through special chemical reactions, special synthetic zeolite is crystallized in ceramic fiber, and thus, single runner reaches -80℃ D.P. according to airflow conditions.
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