1 main exchange cold box and the main cold box between the partition, process pipeline through the partition using the insulation plate plus wool felt cold way, its poor cooling effect, resulting in the partition, column channel steel frost cracking. So the workers changed to open DN600 hole on the partition plate plus stainless steel collar, the collar with foam foam to keep cold, welding reinforcement of frozen cracked channel steel branch.
2 original process pipeline fixed using stainless steel clamps wool felt appears more loose, check all process pipelines, according to the new specifications to increase the bracket as follows
3The blow-off pipe line of the liquid argon return pipe of the crude argon condenser (Φ30×2), increase the fixed frame and guide frame
4 The liquid-air return line of the crude argon condenser to the upper tower (LAΦ30×2-L), add fixed frame and guide frame near the exit end of the crude argon condenser. Replace the pipe before and after the manual valve V701, make brackets for each of the main tower crude argon II tower, and add fixed brackets before the inlet of the upper tower.
5 crude argon condenser process argon to fine argon tower pipeline (GA-Φ70×3--), the original pipe rack removed, in the original position to increase the fixed in the crude argon tower II fixed pipe rack, process argon discharge pipe in the middle of the fine argon tower to increase a guide rack.
6 liquid air into the crude argon condenser pipeline (LA-①110×4-L) the upper part of the original pipe rack was removed and replaced with a fixed pipe rack on the crude argon tower from the top to the first pipe rack near the cold box was changed to a frame type sliding rack.
The small air separation unit, large air separation unit and liquid air separation plant overhaul team at DEAR Air is experienced in overhauling condensers.
