Product category:
Gas monitoring and analysis
News Release from: Emerson Process Management | Subject: X-Stream
Edited by the Processingtalk Editorial
Team on 02 May 2007
Tanker terminal petrol vapour recovery
monitoring
Rosemount Analytical X-Stream analysers are to monitor the effectiveness of vapour recovery units at petroleum tanker loading terminals, and ensure that no hydrocarbon gases are emitted to atmosphere
Emerson Process Management is providing Rosemount Analytical X-Stream Process Gas Analysers to Roplex Engineering, a leading UK provider of Vapour Recovery Units (VRUs) and services to petroleum distribution terminals The explosion proof, dual channel X-Stream infrared analysers are being used to measure carbon monoxide and butane, monitoring the effectiveness of the VRU in removing all the hydrocarbons and thereby adding additional levels of safety at terminals
This article was originally published on Processingtalk on 25 Aug 2008 at 8.00am (UK)
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Emerson improves oxygen analyser
Emerson Process Management has enhanced its Rosemount Analytical X-Stream oxygen analysers to improve efficiencies of large boilers and furnaces.
Enhancing process gas analyser technology
Sensitivity, range, stability, and calibration intervals are all enhanced in the Rosemount Analytical X-Stream process gas analysers from Emerson
"A prime consideration for these applications is accuracy and reliability," said John Robson, managing director of Southampton based Roplex Engineering.
"We used to purchase cheaper analysers with electrochemical sensors, but we find that the proven infrared technology in the X-Stream provides a superior solution, something our customers readily acknowledge".
VRUs have long been installed on petrol tanker loading terminals in response to legislation limiting the amount of hydrocarbon vapours being emitted to the atmosphere.
Further reading
Analyser increases oxygen measurement accuracy
Emerson Process Management has introduced AccuMax technology to enhance boiler and furnace efficiency and reduce emissions, by improving oxygen measurement accuracy
Gas analysers for vapour recovery units
Emerson is providing Rosemount Analytical X-Stream Process Gas Analysers to Roplex Engineering, a leading UK provider of Vapour Recovery Units and services to petroleum distribution terminals
When tankers arrive at the refuelling points they are empty of fuel but full of air saturated with vapour, up to 40% by volume.
As the tanker is filled, the expelled vapour is collected and fed to a VRU where the hydrocarbons are removed before the air is vented to atmosphere.
A typical VRU has two scrubbers both containing activated carbon.
Installed in parallel, the scrubbers are routinely switched.
One adsorbs the hydrocarbons and then, once saturated, the beds switch and the hydrocarbons are removed and returned to liquid form.
The X-Stream analysers detect carbon monoxide in the gas exiting the adsorber bed: presence of the gas provides an early indication of an upset condition that has the potential to become a hazard.
The second measurement, butane, is made on the final vent-to-atmosphere to ensure that the VRU is working effectively.
The X-Stream analysers can utilise the appropriate non-dispersive infrared (NDIR) and ultraviolet (UV) spectroscopy as well as paramagnetic and thermal conductivity detectors to detect oxygen, carbon monoxide, carbon dioxide, hydrogen, or other gases.
X-Stream analysers offer single or dual channel analysis and provide real-time control to help customers fine-tune their processes for increased productivity and profitability.
With EExd Flameproof or EExp ATEX certification the X-Stream Analyser is rated to IP66/NEMA4X for field mounting and is suitable for operating temperatures from -20 to +50C.
A 19 inch rack mounting version is also available. Request a free brochure from Emerson Process Management ...
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