Has anyone at your workplace had their oxygen generator cleaned of sand?
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Everyone, please share whether the oxygen generators in your workplaces have had their filters cleaned, and under what circumstances is it necessary to do so
When there are leaks in the cryogenic tank or when process modifications need to be carried out inside it, it’s very difficult to remove the sand
1. If the equipment, pipes, and valves inside the cold box are damaged or leaking, thereby affecting production, they must be replaced or repaired； 2. The thermal insulation performance of the insulation material declines, such as due to pulverization or moisture absorption.
The pressure guide tube can still function if it leaks, but if the pipe breaks, that’s a problem. If a liquid-phase pipe breaks, it can be fatal for the cryogenic tank – it’s terrifying! !
Another scenario is when the local technical supervision agency mandates inspections of the distillation tower
Reply to 5# yuanlver: In my opinion, it is necessary to conduct regular oxygen content analyses of the cold boxes in distillation towers. By analyzing the data, it is possible to identify potential leakage points and the type of substance leaking. It also determines whether sand removal is required; once such a decision is made, it certainly involves significant efforts! As for liquid oxygen pumps, since cryogenic liquid pumps are independent cryogenic chambers of relatively small size, if there is a leak, and the walls of the cryogenic chamber are covered in frost along with an excessive oxygen level, it is advisable to address the issue promptly. Otherwise, problems such as damage to the foundation or soil due to freezing can occur, which would be troublesome! Technical issues are generally resolved by the company itself; there’s no need for external parties to get involved!
Reply to 6# fanglinyong: Theoretically, it is indeed the case. In practice, what’s feared are those who abuse their power to pretend to be knowledgeable, thereby wasting people’s time and money.
We work in the technical field; data collection and analysis are the means to solve problems. Only after everything is confirmed will we decide whether to carry out sand removal – it’s not something that can be done just because someone thinks it’s necessary! At the very least, who will pay for removing the sand? !
We removed half of it; there was a leak in the crude argon condenser, and the argon quality remained unsatisfactory. We carried out repairs on the crude argon condenser while doing that
A leak occurs inside the cryogenic tank; the main symptoms include excessively high pressure in the tank’s sealing system, or low temperatures at the tank’s foundation and icing of the tank. Internal leakage and cross-leakage in the heat exchanger affect product purity.
It’s not just sand removal; it’s also sandblasting. .