Do series-connected propane storage tanks require pressure balancing tanks?
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I have a question: my facility has 8 propane horizontal tanks. 4 are responsible for storage, and 4 are responsible for delivering propane cutting gas (the liquid-phase gas is converted to a gaseous state in a vaporizer before being delivered). Currently, the gas phases of the 4 delivery tanks are connected to each other, while the valves of the gas phase pipelines of the 4 storage tanks are closed and not interconnected. The current situation is that the pressures in the first 4 storage tanks are all different. The pressure in the storage tank is 0.1–0.07 MPa higher than the pressure of the gas supplied. Is it necessary to open all the gas-phase pipelines and connect them in series? It remains unchanged. Are there any specific requirements that require documentation support?
If backflow is to occur, there must be a gas-phase connection line
Based on your description, if you wish to maintain a more balanced pressure across the various storage tanks, you can consider opening all of the gas-phase pipelines to create a series connection, thereby allowing the pressure to be balanced among the tanks. This can improve the stability of the system and the reliability of gas supply. However, it is recommended to refer to the relevant safety specifications and operation manuals before carrying out the operations, to ensure that they meet safety requirements. If in doubt, it is recommended to consult professional technicians or refer to relevant standard documents such as GB50074 \"Code for Design of Liquefied Petroleum Gas Storage and Distribution\" and other similar standards to support decision-making. .
Connecting all the gas pipelines in series can help balance the pressure inside the tank, resulting in a more uniform pressure between the storage tank and the supply tank, which contributes to improving the stability and safety of the system. However, relevant safety specifications and operating guidelines should be referred to before making any adjustments, and it is recommended to consult professionals or relevant safety agencies to confirm compliance with standard requirements. At the same time, it is necessary to ensure that all connections and valves meet safety standards to avoid leaks or other safety hazards. .