structural strenght of slotted screen

[ed666]

Hello,

we are looking at building a new batch pulp digester to replace our venerable almost 100 Y old ones. The original sulfite digesters are made of 'black steel' lined with brick. We will replace one of them with 2205 SS. The new digester will a bit different and we will try it for few years before we will replace all of the others.

The digester has liquor recirculation and the collector ring in the current model has vertical slot. The slot pattern in the current digester works fine but with the new digester we will need a different plate arrangement with the similar pattern. I am a little but concern with the structural strength of the new model of screen plate to avoid the screen plate collapsing.

Any one has any advise on how to estimate the strength of a slotted screen

thanks


Eric

 

[racookpe1978]

Call your slotted screen design supplier: The local stainless steel screen and plate fab shops here all have technical spec's and designers who have catalogs with the plate thickness, material spec's and weights and thicknesses, and with hole size, hole shape, hole number/area, and resulting weight and strength.

You may not buy from one of the ones you ask first, but you have to ask first before you can start talking about quotes.

 

[rb1957]

how similar is the new design to the one that survived 100 yr of operations ?

"digester" ... lots of vibration ? ... hard to analyze

another day in paradise, or is paradise one day closer ?

 

[dvd]

You can look here:

http://www.iperf.org/perforating/knowledge-center/perf-handbook/strength-perforated-metals/

http://www.iperf.org/perforating/kn...andbook/elastic-properties-perforated-metals/

might also be interested in this

http://www.iperf.org/perforating/kn...sure-loss-through-perforated-plate-air-fluid/

If you call or e-mail they will send you a copy of the perforators handbook

http://www.iperf.org/perforating/knowledge-center/perf-handbook/

Different perforators have pretty good knowledge of their products. You may want to discuss what you want w

http://www.eng-tips.com/viewthread.cfm?qid=378645ith

a perforator before getting too deep into the design so that you can avoid the cost of new tooling.