Strainer for cooling water

[dubulu123]

Hello everybody,
In my refinery, because of lack of area, Basket filter at suction of cooling water booster pump was dismantled. In place of this T type strainer (30") with mesh size 7 mesh was put but it is getting frequently plugged(every 4-5 hrs)
It needs cleaning sfter that.
Cooling water source is from sea water channel.
Pump flow rate (rated) is 5150 m3/hr
Currently we are operating with a 2.5 mesh screen.It seems that my 30" strainer is undersized. Please help me in deciding the suitable size of strainer required to overcome the problem.

Thanks all in advance

 

[MikeHalloran]

Perhaps you need two strainers, with selector valves, and maybe a timed backflush to dump out the barnacles and such.
Have you got room for that?



Mike Halloran
Pembroke Pines, FL, USA

 

[dubulu123]

Dear Mike,
we are operating with two strainers right now( 1operating+1standby).But the problem is the frequency of plugging;asking for maintainence,which is thrice in a shift(8hrs).Though currently I am operating with a 2.5 mesh(originially 7mesh),i can't operate for long time which will have a impact on downstream exchangers in terms of plugging,corrosion,erosion etc.Therefore I wanted to know what should be strainer size(currently30 inch)i can opt for with 7mesh ,which will have a less pr. drop even after considering a plugging area of 20%.Is there any such guideline,chart available to reach at optimum strainer size at a certain flowrate.
regards,
dubulu

 

[BigInch]

You're the one with the data you need. Make a chart out of it.

"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.

"Being GREEN isn't easy." Kermit

http://www.youtube.com/watch?v=hpiIWMWWVco

http://virtualpipeline.spaces.live.com

 

[Compositepro]

Why not use self cleaning strainers?