April 2014Analytical Instrumentation & Environmental Monitoring
In general usage, LPG (liquefied petroleum gas) refers to propane, butane and their mixtures, which remain liquid at room temperature under relatively low pressure. It occurs as a by-product in crude oil refining and as an associated gas in the exploitation of crude oil and natural gas.
Liquefied gas, in contrast to crude oil, is not transported via pipelines but in large sea-going vessels, small barges, railway tank wagons and road tank vehicles to dealers and also directly to the liquefied gas tanks of the final consumers. The low pressure of propane and butane make this flexible transport of liquefied gas possible.
Application challenges
At normal temperatures and pressures LPG evaporates, it is therefore stored in pressurised steel tanks that are only filled between 80 and 85% of their capacity to allow for thermal expansion. The volume ratio of vaporised gas to liquefied gas varies depending on composition, pressure and temperature, but typically ranges around 250:1. LPG can be stored under high pressures in mounded bullets or in cryogenic tanks at negative temperatures. Thanks to the wide range of high-quality tank gauging as well as safety instrumentation, the expertise in project management, system integration, third-party supply, service and training, Endress+Hauser is able to act as one-stop solution provider to increase productivity and lower costs of complete tank farms and terminals.
The solution
Endress+Hauser has implemented a complete inventory management solution for mounded bullet tanks combining both measuring accuracy and the highest safety standards. Customer value includes:
* The right instrumentation for any application.
* High accuracy and system reliability.
* Transparency in the processes leading to accurate product and sales planning.
* Optimised capacity utilisation of tanks and improved material availability.
* Lower inventory and operating costs by data integration into systems.
* Monitor critical inventory information remotely.
* Lowered environmental risk through preventing overfills using safety class instruments (up to SIL3 – Liquiphant FailSafe).
The Endress+Hauser Tank and Terminal Management solutions can be fully integrated into business networks for the highest degree of transparency in processes, which leads to higher customer satisfaction and an increase of revenue and profit.
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