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Acid filter fail #4443145
06/27/17 08:14 PM
06/27/17 08:14 PM
Joined: Dec 2004
Posts: 116
Beaverton, OR USA
T-Bone Offline OP
T-Bone  Offline OP

Joined: Dec 2004
Posts: 116
Beaverton, OR USA
I had some pleated acid filters fail over the weekend.




This is what happens when you put a polypropylene filter in a chemical (hydrochloric acid at 60 C) that should have had a PTFE filter. The polypropylene was crumbling, the filter o-rings and end cap blew off entirely. The pleated media was totally destroyed. Fun!

Re: Acid filter fail [Re: T-Bone] #4443231
06/27/17 09:46 PM
06/27/17 09:46 PM
Joined: Oct 2014
Posts: 13,275
Canyon County Idaho
CT8 Offline
CT8  Offline

Joined: Oct 2014
Posts: 13,275
Canyon County Idaho
What were the filters used for? Lab? MFG ?


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Acid filter fail [Re: T-Bone] #4443361
06/28/17 01:05 AM
06/28/17 01:05 AM
Joined: Dec 2004
Posts: 116
Beaverton, OR USA
T-Bone Offline OP
T-Bone  Offline OP

Joined: Dec 2004
Posts: 116
Beaverton, OR USA
These are from an acid cleaning manufacturing machine where I work.

Re: Acid filter fail [Re: T-Bone] #4443498
06/28/17 07:45 AM
06/28/17 07:45 AM
Joined: Aug 2010
Posts: 6,229
Champlain/Hudson Valley
Kira Offline
Kira  Offline

Joined: Aug 2010
Posts: 6,229
Champlain/Hudson Valley
Was there a spill? Don't worry, I won't tell.

Re: Acid filter fail [Re: T-Bone] #4443506
06/28/17 07:54 AM
06/28/17 07:54 AM
Joined: Jan 2004
Posts: 5,966
northern Alabama
benjamming Offline
benjamming  Offline

Joined: Jan 2004
Posts: 5,966
northern Alabama
What % HCl?

Re: Acid filter fail [Re: benjamming] #4443536
06/28/17 08:26 AM
06/28/17 08:26 AM
Joined: Oct 2010
Posts: 4,934
Midwest
volk06 Offline
volk06  Offline

Joined: Oct 2010
Posts: 4,934
Midwest
Originally Posted By: benjamming
What % HCl?


I would venture a guess of 35-37%.


2011 F-150 Ecoboost
2012 Focus S
2001 Taurus
Re: Acid filter fail [Re: T-Bone] #4444320
06/28/17 09:03 PM
06/28/17 09:03 PM
Joined: Dec 2004
Posts: 116
Beaverton, OR USA
T-Bone Offline OP
T-Bone  Offline OP

Joined: Dec 2004
Posts: 116
Beaverton, OR USA
Yep, hydrochloric acid of about 8% concentration at 60 C recirculating through that filter. Normally an all-PTFE filter is used, but a polypropylene one was mistakenly installed.

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