choosing better lining

[pogcali]

what is the best choose for lining of chemical tanks? I have glass flake epoxy paints for this, but for some tanks that contains solvents and acids storage with high temperature, what another paint better than glass flake epoxy paint?

 

[moltenmetal]

High temperature acid and solvent storage is too much for PAINT, or even a properly applied lining system with all the required surface preparation.

Rubber can handle the acid and within limits, the temperature - but probably not the hot solvent. Epoxy can handle the acid and solvent but not the temperature. Glass can handle it all, within limits, but not if there's a lot of thermal shock. Fluoropolymer linings (PFA, ETFE, ECTFE etc.) can handle all of it, within limits, but there's way more to fluoropolymer or rubber or glass lining than there is to spray painting. I wouldn't even try it on a retrofit application- it needs to be applied to purpose-built equipment so all the required QA can be done to ensure a successful and durable result.

 

[EdStainless]

This has to be engineered case by case. Each chemical will be different.
Even with epoxys there are multiple systems, and they have different chemical resistance.
Any coating will need very rigorous surface preparation, cleaning, temperature and humidity control.
And coatings in severe service will have a life of a few years, then you will be doing it again.

If you plan on using tanks for multiple chemicals there may not be a coating or lining system that will work. An alloy liner may be your only option then.

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Plymouth Tube

 

[KENAT]

I don't know about 'best' but there are some high performance epoxies out there. We did some very limited testing of EE101 & EE101HT from Arcor a couple of years ago.

http://www.arcorepoxy.com/products/desc/ee101/index.htm

If you talk to them they may have other suggestions.

We tested it with:

Acetonitrile Acetone DMSO Toluene Dichloromethane Water .1M HCL .1M NaOH

Both flavors performed least well with Dichloromethane.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[pogcali]

1-my procedure documents for lining of chemical storage tanks recommended two paints,glass flake epoxy and glass flake vinyl ester(thick lining according to API Recommendation Practice 652). the last paint recommended for some tanks(such as steam condensate tank,Acid neutral tank ,...). I have two qustion about:
1- considering that preparation of glass flake vinyl ester paints is difficult for me. what is the another choose for these tanks? epoxy novalak or epoxy phenolic glass flake instead of vinyl ester glass flake appropriate?
2-if preparation of glass flake thick linings difficult for me(except epoxy glass flake),can I used thin lining of epoxy phenolic or epoxy novalak instead of glass flake vinyl ester or thick linings?
please guide me- thanks

 

[TomDOT]

pog, you really should be talking to some coatings and linings experts, AND you need to be specific as to what chemicals are being stored, what temperatures are, et cetera. Storing MEK is very different from storing hot acetic acid, is very different from storing crude (sour? Sweet? pH? Moisture content?) et cetera.