What's the Best Pipe Material for HCL 60%?

no metals. I would use a polymer tube/pipe of some type. refer to your favorite chemical compatibility chart for use of materials with HCL. many are available. I use multiple charts from multiple companies/organisations due to small variances in the data from chart to chart. But in general, do not use any metals. HCL60% will corrode 316SS like saltwater corrodes mild steel. Even coatings such as powder coatings, enamels etc will not work indefinitely, one scratch/chip is all it takes.

And what temperature?

(and what pressure?)

There are a lot of factors such as pressure, flow rates, temp, budget and so forth that will effect your choice but Polypro or PTFE primary containment with a PVC/Viton secondary containment is a starting point. PVC has limitted resistance to HCL so it cannot be used as primary. Don't forget to have a ventilation system in place when working with HCL at or above 12% concentrations due to fuming.

If ur temeperture range is below 70 deg then u can use HDPE, if above 70 and below 220 deg then u can use MSTL (Mild steel teflon lined ) PIPE.this is more than sufficient for ur application

If ur temeperture range is below 70 deg then u can use HDPE, if above 70 and below 220 deg then u can use MSTL (Mild steel teflon lined ) PIPE.this is more than sufficient for ur application

Hi,

It would be of interest to all of us to know where you get HCl 60%. To my knowledge HCl becomes vapour when concentration goes over 33% in atmospheric conditions.

So a small leak in the system can have very damaging results! Please correct me if I am wrong.

I agree with you! Never heard of 60% HCl. The highest concentration that I am aware of is commercially available 22 degree Baume' muriatic acid, at 36.3 %. This is regularly handled through lined steel piping, at least in my experience in the water treatment industry. I have no idea where you would even find 60% HCl.

<...what is the highest concentration of HCl...>

The highest concentration of anything is 100%. Commercial grade <...HCl...> is usually 30-33% in water.

For the selection of pipe materials it matters little.

Feel free to use a materials compatibility chart or database. Here is a useful one.

Materials suppliers have a responsibility to ensure that the receiving equipment is suitable for the fluids they supply. Feel free to pick up the phone and talk to them about the sorts of equipment and materials that would satisfy their responsibilities, as they are a source of valuable knowledge.

Hi Awais,

All the information you need is in this link

http://en.wikipedia.org/wiki/Hydrochloric_acid

Yes that true. We are one of HCL manufacturer where we only produce 33% concentration.. Here we only use PVC / CPVC coated with resin to gain more power pipe and avoid much corrosion..

Please check. i'm think not 60%.There must be some error here. To produce HCL, we need H2 and Cl2 where the equation is 1 H2 + 1 Cl2 = HCL..we control the percent that mix together to get this 33% HCL with demin water in higly flame combustion.

The physical properties of hydrochloric acid, such as boiling and melting points, density, and pH depend on the concentration or molarity of HCl in the acid solution. They range from those of water at very low concentrations approaching 0% HCl to values for fuming hydrochloric acid at over 40% HCl.^{[7][8][11][12]}

Hey Guest,

It is a shame you copy from Wikipedia & paste without any reference. This is not acceptable in a professional forum like CR4

Please Ref to Post 11.

Hi

Thanks to all friends which give me the knowledge about my topic or problems

sisra i am very thankful to you about declearing the fake concentration of my supplier

dear friend i slove my problem by taking help from you

i use CPVC pipe having working temp:73.5F and pressure 470 psi (sechulde 80) with the lamination of FRP, its a wonderful experience.

I recive qoutation of this work 1000$ but now i save my 900$ by using your experiences

again thanks

CR4 is a wonderful site to reclove our problems its my first time to use this type of site

thanks CR4

I think PVC is OK.

It is able to resist to H2SO4 90% and HNO3 60%

Sorry to sound rude but I strongly recommend that you get a chemistry book out and read about H2SO4 and HCL, I'm sure that you will find them to be very different types of acids.

From a safety stand point PVC is not a good choice for primary containment of HCL..... Then again I consider personal and personnel safety very important, other people may not.

sir

i find in pvc encycopidia it will resist HCL

if you have better solution tell me for future

thanks

Go back up to the top of the discusion and you will see that I have already made a recommendation.

A Kevlar vest "resists" bullets fired from a gun but how many times would you be willing to be shot while wearing the same vest each time. PVC generally gets decent ratings for HCL usage when the concentration of HCL is below 20% but once you start getting over 20% concentration PVC performance drops off quite quickly. CPVC does have better ratings even at higher HCL concentrations than PVC does but still degrades over time. Many people also forget to make sure that they are using compatible glues which leads to failures at glue joints.

Plastic pipework is used extensively at ~33%. Often it has a containment pipe over the outside of it, depending upon company standards.

PWSLACK-

Is that Gunter or Ramsden chain?:)