If there are any issues with production accidents, please help analyze them
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This morning, just before leaving work, I noticed a leak in the argon tank. Since our company produces butyllithium products, argon is needed both in the dispersion area and in the reaction area. There are two purposes for using argon in these two areas: one is to maintain a slight positive pressure inside the tanks, and the other is to use argon to transfer materials to the next stage of processing. When the leak was detected, we took measures to shut down the argon pipelines and halted the operations at the stations dealing with argon. Subsequently, we closed the CV valves on all pressure vessels to prevent backpressure from the flame from causing reactions with other materials and lithium. However, a problem that can arise later is that the pressure vessel in one of the distributed units reports abnormally high levels, and the level gauges, auxiliary lines, and material transfer pipelines become clogged. Could everyone please help analyze what causes the blockage and what actions should be taken in such situations? Thank you
I’m not familiar with your manufacturing processes, so I’ll talk based on the symptoms of the faults. 1. High pressure alarm in the pressure vessel: No argon is available to maintain a slight positive pressure, so the liquid level inside the vessel cannot drain away and thus rises. The inlet and outlet of the tank are switched according to the actual conditions on site, or it can automatically switch to using bottled argon for pressure maintenance in the absence of argon. 2. Blockage in the level gauge, auxiliary lines, and material transfer pipelines: Is the material inside the tank a medium that tends to condense or crystallize? ； Is the heat preservation and tracing functioning properly? ； Are there any emergency measures in place for abnormal shutdowns, such as using alternative media for replacement, maintaining pressure, or purging? This is my personal opinion for reference only.
I’m not familiar with your manufacturing processes, so I’ll talk based on the symptoms of the faults. 1. High pressure alarm in the pressure vessel: No argon is available to maintain a slight positive pressure, so the liquid level inside the vessel cannot drain away and thus rises. The inlet and outlet of the tank are switched according to the actual conditions on site, or it can automatically switch to using bottled argon for pressure maintenance in the absence of argon. 2. Blockage in the level gauge, auxiliary lines, and material transfer pipelines: Is the material inside the tank a medium that tends to condense or crystallize? ； Is the heat preservation and tracing functioning properly? ； Are there any emergency measures in place for abnormal shutdowns, such as using alternative media for replacement, maintaining pressure, or purging? This is my personal opinion for reference only.
It’s unclear what the purposes of the argon gas are in your various locations; is there a possibility of solid material clogging? Also, why isn’t there a backup for the argon storage tank?
Well, I’ve thought about the reasons you mentioned for the high pressure levels, but we have two production lines, and the other line doesn’t experience such issues
The uses of argon at the dispersion station are, first, to maintain a slight positive pressure, and second, to provide pressure for transporting materials. After each transfer of material, we need to perform back-blowing to prevent blockages.
Hehe, are they two identical production lines? Can the control system view historical records? Well, you know what I mean. . .
Well, it’s the back pressure of the torch that causes issues, similar to what happens in the production line; I think it’s the CV valve
1. High pressure alarm in the pressure vessel: No argon is available to maintain a slight positive pressure, so the liquid level inside the vessel cannot drain away and thus rises. The inlet and outlet of the tank are switched according to the actual conditions on site, or it can automatically switch to using bottled argon for pressure maintenance in the absence of argon. 2. Blockage in the level gauge, auxiliary lines, and material transfer pipelines: Is the material inside the tank a medium that tends to condense or crystallize? ； Is the heat preservation and tracing functioning properly? ； Are there any emergency measures in place for abnormal shutdowns, such as using alternative media for replacement, maintaining pressure, or purging? Personal opinion, for reference only
1. High pressure alarm in the pressure vessel: No argon is available to maintain a slight positive pressure, so the liquid level inside the vessel cannot drain away and thus rises. The inlet and outlet of the tank are switched according to the actual conditions on site, or it can automatically switch to using bottled argon for pressure maintenance in the absence of argon. 2. Blockage in the level gauge, auxiliary lines, and material transfer pipelines: Is the material inside the tank a medium that tends to condense or crystallize? ； Is the heat preservation and tracing functioning properly? ； Are there any emergency measures in place for abnormal shutdowns, such as using alternative media for replacement, maintaining pressure, or purging? Personal opinion, for reference only
Chemical production is a systematic process that requires standardized operating methods and procedures to ensure the proper start-up, shutdown, and operation of the production process. Your current problems are mainly caused by a lack of standardized and systematic procedures.