Points to note when draining water from the stabilizer tower cold reflux tank
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The flow rate of the cut water in the stabilizer column cold reflux tank is very high; to prevent splashing, operators placed insulation materials around it, but a fire did not occur for long. After one maintenance session, insulation was added around the water cut-off point again; everyone discussed whether that was a good idea or not.
I don’t understand what you’re saying. How can insulation catch fire? It is generally done through closed dehydration. Open dehydration is very dangerous.
Yes, it’s closed-loop dehydration, with a control valve that automatically regulates the level.
I suspect it might be ferrous sulfide that catches fire on its own; when exposed to air at a certain temperature, after being soaked in insulating material for a long time, it ignites spontaneously. It is recommended not to use insulation, and to rinse the cut-off point with water regularly.
How can cutting water catch fire? What device is the stabilizer tower here? Generally, liquefied gas is present in the cold reflux tank of a gasoline stabilizer; it is best to use a sealed method for water removal. If an open method is used, care must be taken to ensure that the water is removed at a moderate rate – the valve should not be opened too wide. Especially new employees, in an attempt to complete the water removal process more quickly, tend to open the valve fully, which is very dangerous: once the water has been removed, the liquefied gas will burst out in large quantities, creating explosive gases!
It is usually done through sealed dehydration, which is environmentally friendly and odorless
When draining water from the bottom of the stabilizer reflux tank, it should be done slowly, with the speed carefully controlled to avoid being too fast. However, modern dehydration interfaces are equipped with control valves. Also, is there an issue with the installation location of the water cut-off valve at the bottom of your tank?
Use sealed water cutting. The stabilized wastewater is sealed and returned to the liquid separation tank at the top of the distillation tower
You need to convert it to a sealed dehydration system to prevent the combustion of ferrous sulfide, while also being environmentally friendly.
It was forgotten during design, but it can be changed to closed dehydration during maintenance.
Technicians should offer more suggestions for improvement regarding such issues, and avoid having an indifferent attitude.
When cutting off the liquefied gas, it is essential to be careful that the flow rate isn’t too high; this has nothing to do with ferrous sulfide. If the flow rate is set too high, it will be impossible to shut off the liquefied gas in time. It is recommended to convert it to a sealed water cut-off system.