Is Bulk CO2 Shipped Cryogenically To Minimize Tank Weight, Or For Some Other Reason?

[crshears]

Originally posted in the Railroad Equipment Engineering forum...but that seems to be a low traffic location, and probably the wrong forum considering the question...maybe here is a better fit?

My interest in railroads has been revived since I started volunteering aboard the retired / legacy steam ship SS Keewatin [www.sskeewatin.com], formerly an asset of the Great Lakes Steamship Service of the Canadian Pacific Railway...

Question: for bulk transportation of CO2 by rail [or large tanker truck] in North America, is liquid CO2 usually shipped cryogenically in heavily insulated tankers so the pressure rating and overall weight of the tank needn't be as high as if it were shipped at ambient temperature and higher pressure? My thought is that with the latter there would be less net loss en route due to expansion & blow-off, but that doesn't appear to be the way it's usually done.

For answers to the above, what reasoning is applied and/or what regulations prevail to dictate doing this one way or the other? My Internet search results to date have proven less than stellar...

Thanks!

CR

"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]

 

[LittleInch]

Yes it could, but I'm pottery sure you'll find the amount of cooling you'll get from a minute mass of gas will be insignificant and the coiling coils very difficult to instal and operate.

Kind of like using a cigarette lighter to try and heat up a tanker load. In theory possible, but practically negligible

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

 

[crshears]

Fair enough, and thanks, LittleInch.

CR

"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]