Drying of Pipe line

[chemengineerjunior]

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

 

[LittleInch]

1) Yes, but you need to define "dry". The ways to dry pipelines include flushing with a hygroscopic fluid ( like MEG or methanol), vacuum drying ( can take a long time) or flowing super dry heated air through the line for days on end.

Dryness is usually quoted as dewpoint of minus X degrees C at atmospheric pressure

In the case of vacuum or dry air, you can measure the amount of water vapour left, but as said, first define how "dry" you actually need the pipeline.

2) I don't really understand your question here

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.