How should the pressure-reduction process for high-pressure pure oxygen be configured?
Thread Content
Oxygen-enriched air is intended for use in combustion; currently, only the high-pressure oxygen source requires pressure reduction before it can be used. The pressure at the oxygen source side is 8.7 MpaA, while the pressure required at the user’s end is 0.15 MpaA, with a flow rate of 4000 Nm3/h. How can the pressure reduction process be designed in a way that is simple and safe to operate? Thank you to all of you, experts:handshake
There should be a buffer tank; I’ve come across systems like this, where the flow first passes through a pressure reducing valve, is then regulated in terms of pressure before entering the buffer tank. After the buffer tank, there’s a pressure release mechanism that sends the fluid to the users. For reference only.
Preliminary ideas: 1. Install an automatic on-off valve on the high-pressure side. 2. Place a set of throttle orifice plates (about 3 stages) after the on-off valve to reduce pressure. 3. Set up a buffer tank; the normal operating pressure for this tank should be 0.6 Mpa, with the safety valve set at 1.0 Mpa. 4. Run a pipeline from the buffer tank to the user, and install a self-acting pressure reducing valve at the user’s end to lower the pressure to 0.1–0.2 Mpa. 5. Control the amount of flow required by the user using flow control valves. 6. Try to minimize the use of manual control valves. I would appreciate any advice from experts; thank you
The flow valve does not ensure pressure stability by controlling the amount required by the user; if the user suddenly stops using the system, the valve on that end closes, reducing the flow in the pipeline, and the flow valve then opens further, resulting in significant fluctuations in an instant.
Is there a self-acting oxygen pressure reducing valve with a flow rate of around 5000 Nm3/h? 9.0 MpaA on the high-pressure side, 0.6 MpaA on the low-pressure side