Is a flexible hose necessary for unloading ethanol?
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Urgent question: Is it necessary to use a dip pipe for unloading ethanol? There are hoses, right? Are there any relevant regulations?
For safety reasons, to prevent fires
No problem, we unload our methanol using hoses.
It seems that currently it is required that the unloading of toxic liquids and liquefied gases must be done using dip pipes
Ethanol is classified as a Class A liquid and is flammable; its vapors can form explosive mixtures with air. A closed pipeline system should be used for unloading it into storage tanks.
For flammable liquids of Class A B, Class B, and Class C A, the trench unloading system is strictly prohibited. For flammable liquid media prone to static electricity accumulation, loading by top spraying is strictly prohibited. For Class A B and Class B A liquid media, a top-sealed cap-type submerged impactor with a return air pipeline should be used; the end of the vertical tube shall be equipped with a diverter, and the vertical tube must be lowered to the bottom of the tank before filling. Excerpted from \"Technical Requirements for Liquid Loading and Unloading Arms\"
The purpose of using a flexible hose for unloading goods is to take into account the fact that such hoses offer good static electricity conductivity, excellent sealing properties, and ease of use, making them widely applicable for the loading and unloading of various hazardous chemicals. If a hose is used, it goes without saying whether it meets the regulations or not; due to safety considerations, static electricity discharge simply cannot be achieved. Considering the risk of flash explosions caused by the evaporation of oil and gas, it is advisable not to take such risks.
Unloading with flexible hoses is definitely safer than using flexible pipes; we can also achieve automated, airtight unloading
For safety reasons, it is better to use flexible hoses, especially during the summer when temperatures are high and organic substances evaporate more readily! ! !
Unloading booms offer higher safety, are easy to operate, reduce the labor intensity for personnel, and keep overall costs under control; hoses are not recommended for long-term use.
Loading and unloading with flexible hoses is relatively safe; the safety risks associated with hoses are too great!