Questions about nitrogen-gas shielded centrifuges
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Our workshop was recently audited by Pfizer in the United States, and many safety issues were identified. I would like to ask about the nitrogen protection system used for centrifuges, as well as how to measure the residual oxygen level in centrifuges while they are in operation
My factory has centrifuges imported from abroad, used for separating organic substances; these centrifuges require continuous nitrogen purging at a rate of about 10 Nm3/h. There is a nitrogen flow interlock in place, and it is required that the oxygen content be below 1% before starting up, with manual analysis carried out. If you need to analyze the oxygen content online, that’s also possible – just add an oxygen meter.
This post was last edited by li*nji on 2010-6-14 02:27. The oxygen meter is not sufficient; an online continuous oxygen analyzer is required. For more information, see http://bbs.hcbbs.com/thread-675371-1-1.html. Design of explosion-proof system for nitrogen protection in centrifuges
The nitrogen protection system continuously introduces nitrogen into the centrifuge during material separation, reducing the oxygen content and thus preventing it from reaching the **upper limit**. Before starting the centrifuge, fill it with nitrogen to remove the air from inside the machine; if it is necessary to measure the oxygen content, an online oxygen analyzer can be used.
Reply 1# xudebing: Before starting the centrifuge, replace the air inside the machine with nitrogen. If it is necessary to monitor the oxygen content, install an online oxygen detector at the centrifuge’s outlet. The nitrogen protection system continuously introduces nitrogen into the centrifuge during the separation of materials, reducing the oxygen content and thus providing isolation, so that the oxygen level does not exceed the allowed limit. It also has the functions of maintaining pressure and removing moisture.