Drying of TitaniumTetraChloride ( TiCl4 )
Drying of TitaniumTetraChloride ( TiCl4 )
(OP)
Good Morning guys ,
As we are doing Acid cleaning in a pipe line which have 5 flanges till the end, after acid cleaning we will flush the pipe line with water , After drying of pipe line with air, Is there any chance of getting water deposited on the flange sites ???So our problem is that as the pipeline is handling TiCl4, TiCl4 + H20 -->> Ti02 + HCL .
So my questions are
1) with air is it possible to dry the pipe line or can u suggest some other gas that we can get complete dryness,
2) Is there any chance of getting water deposited on the flanges ? ( After drying with air , currently nitrogen cant be used for drying)
Its a Carbon Steel Line
As we are doing Acid cleaning in a pipe line which have 5 flanges till the end, after acid cleaning we will flush the pipe line with water , After drying of pipe line with air, Is there any chance of getting water deposited on the flange sites ???So our problem is that as the pipeline is handling TiCl4, TiCl4 + H20 -->> Ti02 + HCL .
So my questions are
1) with air is it possible to dry the pipe line or can u suggest some other gas that we can get complete dryness,
2) Is there any chance of getting water deposited on the flanges ? ( After drying with air , currently nitrogen cant be used for drying)
Its a Carbon Steel Line





RE: Drying of TitaniumTetraChloride ( TiCl4 )
Many plant instr. air systems with mole sieves dryers dont work well as they are bunged up with lube oil carry over from lube oil from oil flooded screw compressors.
RE: Drying of TitaniumTetraChloride ( TiCl4 )
Please don't do it again.
For others also see the same question in the pipeline forum.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Drying of TitaniumTetraChloride ( TiCl4 )
RE: Drying of TitaniumTetraChloride ( TiCl4 )
Do you have any way to warm the flanges? Maybe some low powered electrical heat tracing on them would also help.
Why do you flush with water?
I thought that most of these systems were kept under dry inert gas purge at all times.
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P.E. Metallurgy, Plymouth Tube
RE: Drying of TitaniumTetraChloride ( TiCl4 )
First of all sorry for double posting, It wont be repeated any more
@ash9144 and @EdStainless
Here in our case, we are doing chemical cleaning (acid cleaning) in a newly installed pipe line, and nitrogen is not available currently for drying ,
There are no heat tracing on the pipe lines as its new one.
But as your answers say we can use dry air with - 40 C dewpoint, so we need to purge the pipeline till we get -40C dewpoint at the exit point also ? Am i right ??
RE: Drying of TitaniumTetraChloride ( TiCl4 )
To visualize the difficulties it is helpful to think of crevices as similar to a Mason jar filled with water and with a 1 cm hole in the lid.
RE: Drying of TitaniumTetraChloride ( TiCl4 )
RE: Drying of TitaniumTetraChloride ( TiCl4 )
I have done some plants that had similar issues, but not TiCl.
We acid cleaned, water rinsed, then flushed with a solvent. We brought in a tanker truck of liquid nitrogen and used that for final purge (and we heated the nitrogen).
If you have flange joints and -40 air you may need a couple of weeks to reach -30 DP, and there still could be some moisture in crevices.
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P.E. Metallurgy, Plymouth Tube
RE: Drying of TitaniumTetraChloride ( TiCl4 )
RE: Drying of TitaniumTetraChloride ( TiCl4 )
After discussion we planned to dry the pipeline with dry air and get a dewpoint of -1C .
RE: Drying of TitaniumTetraChloride ( TiCl4 )
You should think about manually heating (maybe with an industrial heating blanket) just the flanges.
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P.E. Metallurgy, Plymouth Tube