FAQ

The load adjustment range of low pressure small air separation unit is related to the adjustment performance of the raw material compressor, the adjustment performance of the expander, the structural characteristics of the distillation tower and other factors. At present there are imported guide vane of the turbine air compressor flow adjustment range in 75-100%; adjustable nozzle of the turbine expander adjustment range can be in 65-100%. When oxygen is rich and the need to reduce oxygen produc...

Causes of low air compressor efficiency of small air separation unit   There are many reasons for the low efficiency of air compressors, the common ones are: increase in suction temperature at any level, cooler leakage, decrease in grid frequency or voltage, blockage or increase in resistance of the compressor intercooler, gas leakage due to poor sealing, blockage or increase in resistance of the air filter, blockage or increase in resistance of the pipeline of the air separation equipmen...

When the demand for oxygen increases higher than the normal working condition, more liquid oxygen is extracted from the liquid oxygen storage tank, pressurized to the required pressure by the liquid oxygen pump and sent into the main heat exchanger after gasification and reheating, and the liquid oxygen stored in the liquid oxygen storage tank is consumed. At the same time, the flow of low-pressure expander will be reduced, and more cold volume will be recovered by high-pressure nitrogen and the...

Brief description of the molecular sieve problem The purifier CO₂ suddenly started to run abnormally and suddenly went out of range in liquid air separation plants, the dew point never changed significantly. The dew point did not change significantly. In order to ensure that the other molecular sieve had enough time to regenerate, the time could not be shortened any further. At this point there was a relatively stable situation with no further deterioration. Check the trend graph for a cold bl...

The most important index of radiographic quality is the sensitivity of radiography, which is the size of the smallest defect along the direction of ray penetration that can be found on the negative plate quantitatively. Natural defects’ size are hard to be sure. It is obvious that it is unrealistic to use natural defects to evaluate the sensitivity of radiography. Therefore, in order to facilitate the evaluation of photographic quality, it is often used to monitor the image quali...

What is relative humidity in air separation equipment

Pressure test of piping in the cold box (1) The system adopts air pressure test, the medium is dry and oil-free air. And must be responsible for the package by a dedicated person partition, strict and careful inspection of the leakage of each part, no leakage is allowed. (2) Before the pressure test, the butt welds of the pipeline should have been checked and qualified, and the valve position holes of all safety valves and automatic valves in the switching process should be blocked with blind ...

The molecular sieve of purification system has strong water absorption, but the water absorption capacity is limited to a certain extent. In order to prevent the molecular sieve from entering water during operation, the following points should be paid attention to: The air cooling tower should be operated according to the regulations, and the gas should be introduced first, and then after the...