Does the PSA nitrogen generation unit produce wastewater?
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The company plans to install a small nitrogen generation unit. Does this unit produce wastewater? I have also asked several companies for quotes; the capacity is 40 Nm3/h. 0.6 MPaG, 99.5% purity. . With compressor and 10-liter storage tank. The most expensive one is 400,000. Around a hundred thousand yuan, which is cheap. . How can it differ so much? . Additionally, this nitrogen production unit requires fire protection; should Class B or Class V be considered?
A large price difference is understandable; some are large companies with strong technical capabilities, standardized management, and secure sourcing. The relative management and operational costs are high. Some of those working independently are former employees from large companies; they may lack technical skills, and the materials they purchase might be cheap, resulting in lower management and operational costs. Of course, companies of larger size aren’t necessarily better than smaller ones; in large companies, the skilled technicians may leave to work on their own, leaving behind a structure filled with inexperienced people, which results in products of poor quality
This post was last edited by hyt1973 on 2019-2-20 at 10:26. First, regarding wastewater: if it refers only to PSA nitrogen production, then there is no wastewater. If the air compressor and dehydration/oil removal systems are included, then yes, because water is inevitably produced during air compression; it’s just a matter of how much. Next, let’s talk about fire protection: except for a few special types of air compressors such as oil-free ones that do not require oil, air compressor stations are all classified as Class D. The oil-free version is Category V. Basis: GB50029－2014 Code for Design of Compressed Air Stations. Third is price: The prices of air compressors vary greatly; PSA is related to molecular sieves as well as to the air treatment system. So it depends on the configuration; just looking at the price is not enough.
Wastewater is discharged; check the humidity of the ambient air. If the humidity is not high, then the amount of wastewater is also small. There is a significant price difference between domestic and imported compressors
Microheat drying for water removal will result in some water being expelled, but it is generally not considered wastewater
Two 9s, 40 nm3. The nitrogen generator should not cost more than 100,000. A 22 kW air compressor is sufficient (approximately 3.6 m3/min). During the process, cold dryers, filters, storage tanks and such are needed:lol:lol:lol
If you haven’t made the purchase yet, talk to Lao Haiyou; WeChat ID: xjcddy001.