Oxygen Generator For Offshore Demolition

Working Principle
 

Pressure swing adsorption (PSA) technology:
It is a common principle of this type of oxygen generator. The equipment is equipped with molecular sieves (usually zeolite molecular sieves) that have selective adsorption capacity for different gases. Compressed air enters the adsorption tower. Under the action of pressure, the molecular sieve preferentially adsorbs impurity gases such as nitrogen, carbon dioxide and water. Oxygen is not easily adsorbed and passes smoothly. It is collected at the outlet of the tower as a high-purity oxygen flow. When the molecular sieve adsorbs impurities to a certain saturation, the impurity gas is desorbed by reducing the pressure in the tower, and the molecular sieve is regenerated to restore the adsorption capacity and prepare for the next round of adsorption separation.
 

Membrane separation technology:
It is also a common working method. A special gas separation membrane is set in the oxygen generator, which has different permeation rates for different gases. Air containing multiple gases passes through the membrane assembly under pressure. Oxygen passes through the membrane faster because of its small molecules and high activity, while other gases such as nitrogen and carbon dioxide pass through more slowly. Therefore, an oxygen-rich air flow is collected on the permeation side of the membrane to separate oxygen from other gases. This technical equipment has a simple structure, is easy to operate, has no moving parts, and is suitable for stable operation in harsh offshore environments.



 

Oxygen Flow: It can usually provide an oxygen flow rate of 1 to 3,000 Nm³/hr, which can meet different oxygen demand requirements in offshore demolition operations, such as supplying oxygen for cutting and welding equipment.

Oxygen Purity: The oxygen purity can reach 80% - 99.5%. High-purity oxygen is beneficial for improving the efficiency and quality of cutting and welding and other operations and reducing the impact of impurities on the process.

Oxygen Pressure: The output oxygen pressure is generally in the range of 0.5 MPa - 1.0 MPa. The appropriate pressure can ensure the normal operation of oxygen-consuming equipment and the smooth transmission of oxygen in the pipeline.