HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

Why does ice form on liquefied gas pipelines

2008-09-30View Original

Thread Content

The liquefied gas pipeline on our unit has frozen; I don’t know why, it didn’t do this before
Reply #22008-09-30
Since liquefied gas is in a liquid state, when this liquid vaporizes at the pipe walls, a considerable amount of heat is absorbed; as a result, the temperature at those pipe walls drops sharply, causing the surrounding water vapor to condense and freeze.
Reply #32008-09-30
Generally, liquefied gas pipelines need to be insulated; the pipeline surface may become wet or even frosty, and the most likely cause is large pressure changes within the pipeline (a drop in pressure). This post was last edited by YUHAO on 2008-10-1 00:44]
Reply #42008-10-01
Additionally, if the pipeline insulation is inadequate, the temperature of the fluid inside the pipe rises; when the pressure drops, heat is absorbed, which leads to a decrease in the wall temperature and frost formation.
Reply #52008-10-01
This indicates that the composition of liquefied gas has changed; the weather has turned cooler and the air humidity has increased
Reply #62008-10-01
Freezing occurs in liquefied gas pipelines: part of the liquid liquefied gas vaporizes, and this vaporization absorbs heat from the surrounding area, causing the temperature there to drop sharply; as a result, water vapor in the air cools and freezes.
Reply #72008-10-01
LPG undergoes phase changes during transportation, and the heat absorbed causes dew formation on the outer wall of the pipeline. . . :lol
Reply #82008-10-01
Liquefied gas undergoes vaporization, which absorbs heat and causes the pipe walls to freeze.
Reply #92008-10-01
Is there a leak somewhere? A phase change occurs during the flow of liquefied gas, which absorbs heat and causes the outer wall of the pipeline to freeze.
Reply #102008-10-01
A considerable amount of heat is absorbed during the vaporization of the liquid phase

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.