Posts Tagged ‘pressure’

Profibus health check delivers faster communications for Imperial College London’s carbon capture plant

June 1, 2015

A Profibus health check carried out by ABB has enabled Imperial College London to improve the performance of its instrumentation and control system used as part of its carbon capture pilot plant teaching facility. Carried out by ABB’s Measurement and Analytics Service team, the health check highlighted various potential improvements that could be made to the plant’s Profibus network, which have resulted in the data transfer rate being trebled.

Opened in 2012, the carbon capture pilot plant is part of Imperial College’s £8.9 million ChemEngSpace Project and is used for undergraduate teaching, with over 300 chemical engineering students having access each year.

The plant uses an extensive selection of the same ABB proven products and systems that are used in a broad range of industrial applications worldwide. It’s designed so that students acquire hands-on experience of ABB’s integrated systems and products in an operational cutting-edge industrial application. ABB equipment used on the plant includes flow, pressure, temperature and level instruments, pH analysers, positioners, a gas analyser, low voltage drives and motors, low voltage products and a System 800xA distributed control system.

All of the data from the plant is relayed to the control system through several different communication protocols including Foundation Fieldbus, Profibus and Wireless.

Together, this equipment enables students to gain valuable practical experience of plant operation that will help prepare them for a career in chemical or process engineering.

As part of its 10 year support agreement with Imperial College London, ABB was keen to carry out a health check on the Profibus communications system to help assess its performance. A Profibus analyser was connected to the network to capture a variety of performance-related information, including the data transfer rate, signal strength and any interference or noise. The analyser scans for approximately 30 minutes to an hour and records the communications data to give an indication of efficiency.

The results were revealing. Originally under the impression that the optimum speed for performance was 500kb/second, ABB Service Engineer Paul Bick actually found that in the case of the carbon capture plant, the best speed was 1500kb/second. Increasing the speed to this new limit immediately produced a significant improvement in response time from the instruments. Imperial College were using the slower speed out of caution, but the Profibus health check helped to establish that a higher data transfer rate was achievable.

Paul Bick also took the time to check the network installation, “On a Profibus network, a minimum of one metre of cable length should be used between each instrument. It was discovered that the drives had less than one metre. This didn’t conform to the Profibus guidelines. We therefore recommended that it was extended. Now it works better – without the length there can be issues with reflections, data corruptions and interferences.”

Overall, the Profibus communications network performed well before the health check. But through this procedure a few improvements were made which helped optimise performance, and enabled the students at Imperial to understand what kind of maintenance is required in a real world plant setting, and the significant difference it can make.

Dr Colin Hale, Senior Teaching Fellow at the college says, “A great thing about the plant is that it can be used not only to teach our students about carbon capture, but also about wider issues connected with plant control and instrumentation, including best practice. The improvements produced by the health check are a great example of the valuable contribution that maintenance can make to a system’s performance.”

The Profibus health check is part of a broader range of health check and life cycle services offered by ABB to help users to get the most from their installed instruments and analysers. For more information, email abb.service@gb.abb.com or call 03339 997 996, ref. ‘Health checks’.

Enviropower maintains constant power output with ABB gas analyzers

February 25, 2015

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We are delighted to reveal that our highly reliable gas analyzers, which haven’t suffered a single time loss failure in five years, have enabled a waste to energy plant in West Sussex to achieve its target of 85% percent operating time.

The plant, owned and operated by Enviropower in Lancing, has a 5MWe capacity, burning around
60,000 tonnes a year of biomass fuel derived from construction and demolition waste.

Built in 2008, the plant uses an ABB ACF-NT multi-gas analyzer on each of its two combustion lines. Used to measure all the gas emissions from the plant, their data is sent to an emission reporting system, allowing Enviropower to prove that it is meeting the requirements of the Environment Agency.

Working with its construction company for the project, Enviropower turned to ABB as the analyzer vendor because of the high reliability of our products and our unrivalled ability to integrate complete solutions.

Because the plant’s operation is permit based, it has to meet certain criteria. One of these is the use of equipment that complies with the requirements of the Environment Agency’s MCERTS standards. Its permit specifies a minimum oxygen content of 11%, which will shortly reduce to six percent. As such, it was essential that the analyzers had the flexibility to adapt to changing regulations. What’s more, it was vital that the analyzers were highly reliable and that servicing was kept to a minimum.

The ABB ACF-NT emission and process monitoring analyser ticked all the boxes. Offering continuous, quantitative and selective measurement of numerous gasses, including HCl, HF, H2O, CO, CO2, SO2, NOX, NH3, N2O, O2, TOC and NMHC (non-methane hydrocarbons), the analyser achieves high stability, accuracy and reliability through proven FTIR technology. It also offers integration and display of signals from other instruments, including data on dust, mercury, flow, pressure and temperature.

ABB to take the lead at Global Water Leakage Summit for the third time

February 6, 2013

We are proud to announce that we have been confirmed as the lead sponsor yet again at the 6th Global Water Leakage Summit, to be held at the Thistle Marble Arch, London 12th-13th March.

As a leading international supplier of technology for water and wastewater treatment and distribution applications, we will be taking a prominent role at the event, which provides the ideal platform for leakage practitioners and all those in the business of delivering improved efficiency and innovation for their particular water utilities, to share ideas and experiences on new advances in leakage reduction innovation and processes.

Our very own Global Product Manager, Tim Door, will be chairing panel discussions throughout the two day event, which will include a focus on best case examples showing how utility operators worldwide are tackling leakage through the application of the latest technologies and techniques.

James Chalmers, our Water Industry Manager for the UK and Northern Europe, will also be presenting at the summit on how water operators can reduce leakage through more efficient pressure management using variable speed drives.

As well as sponsoring the event, we will also be exhibiting our latest flow measurement technology that can be used to accurately pinpoint water leakage. Products on show at ABB’s stands (stands 12 and 13) will include the WaterMaster and AquaMaster 3 flowmeters.

The WaterMaster is ABB’s MCERTified, world class flowmeter for water and wastewater applications. With a wide flow range and unsurpassed accuracy, WaterMaster improves control and quality for applications in water treatment works and now features Profibus communications.

The AquaMaster 3 provides a total water management solution for revenue generation, district metering, water distribution, customer billing and leakage control. It offers a choice of mains and battery power options, plus a renewable power version which can draw power from either solar or wind-powered energy sources, offering a truly green solution.

The event also includes a Gala Dinner on the evening of the first day of the summit. Open to all delegates, the dinner will feature a charity auction on behalf of WaterAid, which works to provide the world’s poorest people with safe domestic water and sanitation and education on hygiene.

Now in its sixth occurrence, the Global Water Leakage Summit has established itself as a highly successful platform for raising awareness of water leakage issues. For more information, including how to register, visit www.global-leakage-summit-2013.com.

For more information about ABB’s range of products and services for leakage management, please visit www.abb.com . Alternatively, please call 0870 600 6122 or email moreinstrumentation@gb.abb.com ref. ‘leakage management’.