The medical oxygen generator is the oxygen source of the hospital central oxygen supply system. It uses air as raw material and molecular sieve as adsorbent. Under normal temperature and low pressure, nitrogen and oxygen in the air are separated by pressure swing adsorption method, so as to prepare oxygen with a concentration of ≥93%. As an indispensable oxygen source for hospitals, what are the precautions for hospitals to purchase medical oxygen concentrators?
1. Molecular sieve has a long effective service life
The medical oxygen generator should ensure that the molecular sieve can be used for a long time; the air pressure of the conventional medical oxygen generator is generally between 0.3~0.75Mp. When such high-pressure compressed air enters the adsorption tower, it will flush the molecular sieve, and the molecular sieve will be gradually pulverized. It greatly shortens the life of molecular sieves and increases the cost of oxygen production in hospitals. Therefore, the key is to create a low-pressure working environment for the molecular sieve, so that it is not easy to be pulverized and ensure the long-term service life of the molecular sieve.
2. Oxygen concentration and output are not attenuated
A medical oxygen generator with excellent quality and worthy of purchase by customers should ensure the stability of the concentration of oxygen produced and the output; to do this, we must first know the characteristics of its core component molecular sieve, which has strong oil absorption and strong water absorption., Easy to powder characteristics. Therefore, the key is to create an oil-free working environment for the molecular sieve, so that it will not be contaminated by oil. If the compressed air contains oil, a filter is required to remove the oil from the compressed air. However, the filter cannot completely filter out the oil in the compressed air. With the increase of the operating time of the equipment, a large amount of oil will enter the adsorption tower, pollute the molecular sieve, and cause "oil poisoning" of the molecular sieve. As a result, the oxygen production of the equipment is gradually reduced., the concentration gradually decreased. Therefore, it is advisable to use an oil-free air compressor. The output compressed air does not contain oil, and the molecular sieve is not in contact with oil and will not be polluted by oil, so as to ensure that the oxygen concentration and output are not attenuated.
3. Low energy consumption operation, saving hospital oxygen production costs
Medical oxygen generators must ensure low energy consumption operation, saving oxygen production costs for hospitals; conventional medical oxygen generators generally use oil-based air compressors and the adsorption pressure is between 0.3~0.75Mpa. In order to reduce the oil content of the compressed air entering the adsorption tower, multi-stage oil filters are generally used to remove oil, resulting in high equipment energy consumption and high operating costs. Therefore, the key is to create a low-pressure oil-free working environment. While the equipment operates with low energy consumption, it can ensure the long-term service life of the molecular sieve and reduce the maintenance cost.