Friday, September 28, 2012

Sterilizer deaeration

The objective to have deaeration during sterilizing are to remove oxygen trapped inside sterilizer during door closed.
How do we ensure optimum oxygen had been removed from sterilizer during sterilizing.
The most suitable way are by opening only inlet and condensate valve, while exhaust valve remain close.
Instal a temperature gauge at condensate pipe line and monitor what is the time required to build up temperature to 90 d c.
At my mill it took about 17 minutes. During carrying out this test you will notice few factor that will contribute into poor deaeration, one of the common problem are scale build up in s.s condensate pipe which reduce the flow.
If sterilizer deaeration is good. We will be able to reduce sterilizer pressure build up time which will also reduce sequencing time and able to sustain mill throughput.
The most significant result are reduce in USB up to only 1%.

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