当前位置: Home / Faq / Liquefied air separation FAQ /

Low air compressor efficiency of large air separation unit

Low air compressor efficiency of large air separation unit
Mar 07, 2025
Author: DEAR AST

Grid frequency or voltage drop

Combined with the compressor machine side voltage meter and electrical system background microcomputer found that during the operation of the compressor grid voltage and frequency are not significantly decreased, the external network power supply system is more stable, so the motor and compressor speed is judged to be a constant value.

 

Increase in suction temperature at any level

When the suction temperature of any level rises, the gas density decreases, which will cause the suction volume to decrease and eventually affect the exhaust volume of the unit.

 

Leaking coolers

If the cooler leaks, the cooling water in the low-pressure cooler enters the air side pass and is further entrained by the airflow into the impeller and diffuser, causing scaling and blockage over time and reducing the air flow. To verify whether there are leaks in the coolers, the condensate discharged from the blow-off valves of the cooler stages is continuously monitored by laboratory tests.

The hardness of the condensate from the first and second section coolers of the air compressor exceeded the standard, which indicated that there was a leak inside the first and second section coolers. The leaking circulating cooling water entrained by the airflow enters the second stage impeller, and the water evaporates rapidly under the high temperature and high pressure working environment, and the precipitated calcium and magnesium plasma precipitates and accumulates on the internal runner surface of the second stage impeller, causing the circulation area to be reduced and the air intake of the air compressor to be reduced.

 

The air compressors developed by Dear Air Separation have reduced carbon emissions and saved customers nearly $10 million in annual operating costs.

低温液化空分装置 (1)

DEAR Air Separation Solve YourLow air compressor efficiency of large air separation unitYou can also learn about otherLiquefied air separation FAQ about DEAR Air Separation, and solve the problem for you.
Didn’t find the problem encountered?
Please contact live chat or email for quick help.
Related FAQ
More Related FAQ
 The purpose of the blowing is to clean out the residual slag, aluminium chips and other debris from the piping and vessels. the air source for blowing is provided by the turbine compressor, and the air cooling tower must be activated. 3. blowing principle, first outside the tower, after the tower, blowing brush to be one after another, in the blowing with the air pressure: low pressure system. Should be maintained at 40 a 50kpa high pressure system: should be maintained at 250 ~ 400k...
2025.07.23
Due to improper adjustment of seal gas pressure during operation, liquid oxygen pump can not pump liquid or leak.   From the quality point of view, when the sealing pressure is too high, there will be gas leakage into the pump through the labyrinth seal, resulting in the impeller with gas or even idling, resulting in liquid injection or pressure drop; when the air pressure before sealing is too low, there will be liquid oxygen leakage.   From the quantity point of view, when (p1-p3...
2025.07.22
Need more information?
Contact us for more details about our air separation equipment, solutions and services.
Products
  • Large air separation
  • Small air separation
  • High purity nitrogen air separation
  • Liquefaction air separation
  • Complete air separation
  • Biogas purification
  • Air separation parts
Need more information?
Tel:+86-19837850537
© Kaifeng DEAR Air Separation Industry Co., Ltd.. All rights reserved.
Online
Inquiry
Email
Top