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PSV sizing

PSV sizing

I am trying to properly size a relief valve for a batch reactor and was wondering if I could get some help determining the relieving capacity. I haven't done a calculation like this before and want sure how to calculate the flow rate. The scenario would be a runaway reaction. The reaction is the partial oxidation of methane to methanol. Any help would be greatly appreciated.

RE: PSV sizing

Sounds like homework. Most industrial routes use syn. gas. Plus, on the relief sizing difficulty scale of 1 to 10, you've asked a 30! Since you offer no details, I'll answer similarly. Develop worst case scenarios, collect lab data to evaluate, educate yourself on runaway reactions (DIERS), determine "THE worst case scenario", collect more data on "Twcs", size the relief. It shouldn't take over 6 months working full time on it

Good luck,

To a ChE, the glass is always full - 1/2 air and 1/2 water.

RE: PSV sizing

It does sound like homework, something I may have done as an undergrad but it isn't. There are papers out there on this research. That's correct syngas is more common which is why this is being looked at

RE: PSV sizing

A typical route from methane involves natural gas reforming, a shift gas reactor, syngas compression and the methanol convertor, so how do you plan to do all this in a single batch reactor ? Is this some new process ?

In another process, the steam reformer is replaced with a partial oxidation reactor where methane is converted to CO with pure O2.

Where exactly is this RV located ?

RE: PSV sizing

So, it's a research project? What size is the batch RX?

Good luck,

To a ChE, the glass is always full - 1/2 air and 1/2 water.

RE: PSV sizing

Yup it's for research. It's a 300 cc reactor

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