As an industrial equipment, the PSA oxygen production system can avoid mechanical wear and tear during the perennial operation, which will lead to the decline of product performance. Among them, the decline of oxygen concentration is a more important problem, especially in the field of medical PSA oxygen production. Therefore, this article has sorted out several common factors that lead to low oxygen concentration, which are summarized as follows:
1. The intake air volume of the PSA oxygen generation system is too large or too small. Using the PSA pressure swing adsorption method to produce oxygen, the adsorption capacity of the core component molecular sieve is relatively fixed. Too large or too small intake air may prevent the molecular sieve from producing sufficient oxygen, so the oxygen concentration will be low. The key is to strictly carry out product selection and system planning, and select appropriate pipelines and regulating appropriate valves to control the intake air volume.
2. The compressed air pressure is unstable. When the compressed air enters the molecular sieve, the pressure cannot be within the specified range. The sudden high and low air pressure will affect the working efficiency of the molecular sieve and cause insufficient oxygen production. The more common treatment method is to add an air storage tank before the air enters the molecular sieve. .
3. Molecular sieve quality. Although molecular sieves can work continuously for 8-10 years under normal use conditions, molecular sieves will suffer natural loss during use. When the loss reaches a certain level, sufficient oxygen will not be produced, resulting in a decrease in oxygen concentration. Therefore, it is necessary to check the molecular sieve regularly to ensure the normal and efficient operation of the molecular sieve.
4. Filter element. The filter of the PSA oxygen production system is mainly to filter out impurities, moisture and oil in the air to make the air clean. The purpose of this is to help the molecular sieve to better produce high-purity oxygen and avoid the "poisoning" of the molecular sieve. Case. When the filter really fails, that
Then the compressed air will carry impurities into the molecular sieve, and the excess impurities and dust will be mixed with the produced oxygen, reducing the oxygen content. Excessive moisture may also lead to "poisoning" of the molecular sieve, making the molecular sieve unable to continue production, so it is very important to replace the filter element in time, otherwise it is also one of the factors affecting the oxygen concentration.
