For 10,000 m3/h of waste gas at room temperature, what is the best method for dehumidification (to a moisture content of less than 30%)?
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For 10,000 m3/h of waste gas at room temperature, what is the best method for dehumidification (to a moisture content of less than 30%)?
Adsorption dehydration of aluminum oxide； Or the molecular sieve method. If the moisture content is high, a combination of the two methods can be used.
Is this method suitable for high air volume? What is the moisture content after water removal?
One can refer to cryogenic air separation units; a capacity of 10,000 m3/h is not considered large. Intake conditions are also required; they just need to meet the usage conditions for aluminum oxide. However, one issue worth noting is that adsorption-based dehumidification requires gas purification. There’s also the energy consumption for regeneration. Another aspect is pressure increase and cooling. However, aluminum oxide still has the best effect. To find a solution, consult the manufacturers and suppliers of adsorbents; ask them about the issues you are facing. They have proven solutions available for you, so it’s worth giving it a try.
Waiting for the following text. We also have exhaust gas that needs to be dehumidified. It just has an extra step for degreasing.
There are many types of waste, and the adsorption method is commonly used in large-scale air separation equipment. It mainly involves air dehumidification; you might want to take that as a reference. Regarding the adsorbent to be used, it is still necessary to consult the manufacturer to determine whether it meets the usage requirements.
Given that the exhaust gas contains other components, it is not recommended to use adsorption for dehumidification. If the composition of the exhaust gas is unclear, this may affect the lifespan of the adsorbent. Additionally, some of the components in the exhaust gas will adhere to the adsorbent, resulting in poor dehumidification effects; moreover, these exhaust gas components can influence the design of the process. If it is necessary to use adsorption for treatment, dehumidification wheels can be used as an alternative. It is recommended that such high-humidity gases containing organic waste gases be dehumidified by using conventional chilled water heat exchange for cooling and dehumidification, along with steam-water separation; thereafter, heating via steam heat exchange can bring the humidity level to 30%.