What issues need to be considered when using catalysis to carry out hot removal of large blind flanges?
Thread Content
As mentioned above, which aspects require special attention?
The main thing is to pay attention to pressure relief – open all pressure release points and close all air supply points as much as possible. Avoid the impact of large amounts of steam being released during operation.
But it is still necessary to see the vapor to prevent air from entering.
Compared to cold removal, does the temperature drop caused by hot removal of the large blind plate in the riser settler have an adverse effect on the linings of the riser and the settler?
There might be an impact, but since so many organizations have used this method, the effect isn’t that significant!
When removing the blind flange, shut off all gas supply points to the settler and the fractionation tower, and open the vents at the top of the settler and the fractionation tower as well as the vent for oil and gas. Keep the pressure below 5 kPa, maintaining a slight positive pressure! The thermal removal of large blind flanges is a well-established technique; based on our years of experience, it does not have any adverse effects
The impact is minimal; as long as the lining is properly sintered, such fluctuations can be tolerated. Some companies frequently change the feed, but there are no reports of damage to the lift pipe and settler linings as a result
You can add me on QQ at 397459816; just mention Haichuan, and we can learn more in detail
Is there anyone who can analyze the advantages and disadvantages of cold disassembly and hot disassembly? Looking forward to it