The VPSA oxygen generator for industrial wastewater treatment primarily consists of an air blower, vacuum pump, oxygen production adsorption towers, product storage tank, pressure equalization buffer tank, and pipeline program-controlled valves. It is controlled by a computer program and driven by hydraulic pressure to operate the relevant program-controlled valves, achieving the separation of oxygen products from the air.

Process of the VPSA Oxygen Generator for Industrial Wastewater Treatment

  The adsorption bed of the pressure swing adsorption air separation oxygen generation unit must include two operational steps: adsorption and desorption. To continuously obtain product gas, the oxygen generation unit is typically equipped with two or more adsorption beds. From the perspectives of energy consumption and stability, additional necessary auxiliary steps are also set up. Each adsorption bed generally undergoes steps such as adsorption, pressure release, evacuation or depressurization regeneration, flushing replacement, and pressure equalization pressurization, operating cyclically and repetitively. At the same time, each adsorption bed is in a different operational step, switching periodically under the control of a PLC, enabling coordinated operation among several adsorption beds with staggered timing. This ensures the stable operation of the pressure swing adsorption unit and the continuous acquisition of product gas. For the actual separation process, other trace components in the air must also be considered. The adsorption capacity of carbon dioxide and moisture on common adsorbents is generally much greater than that of nitrogen and oxygen. Suitable adsorbents can be added to the adsorption bed (or the oxygen production adsorbent itself can be utilized) to adsorb and remove them.

Technical Features of the VPSA Oxygen Generator for Industrial Wastewater Treatment

1. Simple unit process flow;

2. Oxygen production scale below 10,000 m3/h, with lower oxygen production power consumption and smaller investment;

3. Small civil engineering workload, shorter installation period compared to cryogenic units;

4. Low unit operation and maintenance costs;

5. High degree of automation in unit operation, convenient and quick start-up and shutdown, with fewer operators;

6. Strong operational stability and high safety of the unit;

7. Simple operation, with main components sourced from internationally renowned manufacturers;

8. Use of original imported oxygen production molecular sieves, offering superior performance and long service life;

9. Strong operational flexibility (excellent load performance, fast switching speed).

Technical Specifications of the VPSA Oxygen Generator for Industrial Wastewater Treatment

Product scale: 100-10,000 Nm3/h

Oxygen purity: ≥90-94%, adjustable within the range of 30-95% based on user requirements.

Oxygen production power consumption: When oxygen purity is 90%, the power consumption (useful work) equivalent to pure oxygen is 0.32-0.37 kWh/Nm3.

Oxygen pressure: ≤20 kPa (can be pressurized)

Annual operational rate: ≥95%