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Concluding our coverage of the ARTC 15th Annual Meeting, GTForm takes a look at the petrochemical and operability and reliabilty streams.
The second day of the ARTC 15th Annual Meeting featured two technical streams, one focusing on the latest petrochemical technologies and the other on the latest techniques and options for improving reliability and reducing maintenance costs in refineries.
Stream A – Petrochemicals
Didier Lambert, Topnir, opened the petrochemical stream with a presentation on steam cracker optimisation through the use of an online measurement process, along with a general overview of Topnir’s offerings. He explained that the Topnir system is a turnkey system for the measurement of hydrocarbon properties in less than one minute and can operate on an offline and/or online basis. The 740,000tpa ethylene steam cracker at the Naphtachimie Total/Ineos joint venture was used as a case study for Topnir’s online analyser/pattern recognition technologies and its advanced process control/real-time optimisation systems. The former allowed much greater monitoring of potential ethylene content. Lambert also discussed how such systems can be used in the petrochemical industry to improve both furnace control and severity optimisation, potentially generating US$3–5 million in benefits a year, through greater yields, energy savings, tighter product quality and other factors, based on the results of a PetroChina case study.
Christian Dupraz, Axens, followed with a look at (R)FCC options for high propylene yield. According to Axens’ projections, an additional 4Mta of propylene production from refineries is expected to come online. He made the point that incremental fuel demand growth for all oil products is expected to be strong in the Asia-Pacific region, making product flexibility desired and that while options such as the recycling of light naphtha or a C4 cut appear attractive due to their simplicity, they are not selective for added propylene and have no impact on distillate yields, while Axens’ Flexene solution, which features a separate polynaphtha oligomerisation unit, allows an FCC to be optimised for production of either propylene, gasoline, jet fuel or diesel, creating significant flexibility.
Nicholas Kim, SK-KBR, spoke about Ole-SIV, a new paraffin/olefin separation via absorption process. After drawing attention to a CMAI forecast that predicts global butadiene use will grow at a CAGR of 3.7% from 2011 to 2015, with global capacity lagging behind (with a CAGR of 2.7% over the same period), Kim explained that Ole-SIV, does not require vacuum operation, can work in the vapour phase, is a constant pressure operation and a continuous process. It also features high olefin selectivity, and the process consists of three steps: adsorption, rinsing and deabsorption. Quoting a case study in South Korea, Kim said the process can result in a total investment saving of up to 21% (new) and 30% in the case of a revamp, while reducing energy consumption by up to 40%. He also explained that SK-KBR is in the final stages of researching and developing ethylene recovery from FCC off-gas and propylene splitting.
Stream B – Operability and reliability
Eva Andersson, Alfa Laval, began the stream with a look at the benefits of welded compact heat exchangers. She said heat recovery is currently often performed using outdated shell-and-tubes and a switch to welded compact heat exchangers can pay back in potentially less than six months, given the fact that their efficiency is up to 50% greater. Andersson also said the fouling rates are at least three times lower than with shell-and-tubes heat exchangers. In the case of a 50,000bpd refinery, replacement of shell-and-tube heat exchangers with Alfa Laval’s Compabloc solution resulted in fuel savings of US$850,000 a year, a reduction in CO2 emissions of 5,000tpa and a payback time of six months, while the time from initiation to commission was 20 months. Andersson also gave an example of a 150,000bpd refinery where the installation of Compabloc in a hydrogen production unit allowed the cooling water requirement to be reduced by 60%, and explained that spiral heat exchangers are well suited for heavy fouling applications by virtue of their self-cleaning design and allow longer service intervals and less downtime. She gave the example of the Nynäs bitumen refinery in Sweden where the replacement of shell-and-tube heat exchangers with 14 Compabloc units, resulted in a 96% reduction in associated maintenance costs.
Chanchana Payungwong, Thaioil, discussed the open-loop real-time optimisation of a Thaoil refinery’s utility system. The project was awarded at the end of 2009 and was a joint effort between Thaoil Group and Invensys. It made use of rigorous online modelling and equation-based optimisation (ROMeo). In 2011, the convergence of utility optimisation averaged 88%, and Payungwong explained that much of the benefits from optimisation have arised from minimisation of boiler fuel oil use through greater use of fuel gas, increased GTF power generation and WHR steam generation and a reduction in STG power production to maintain the steam and power balance. She finished by explaining that the next step will be a study to implement closed-loop real-time optimisation to fully capture the benefits of online optimisation.
Herman Lee, KBC, continued the theme of optimisation with a look at how plant reliability can be improved via an energy reduction and optimisation programme. He noted that typically energy efficiency programmes reduce energy costs by 15–20% and a 15% reduction typically translates into savings of US$21 million a year. Giving a case study of an Asian petrochemical plant, Lee said that while large cost savings were identified, partly from importing steam from a refinery, they were constrained by minimum turndown on the boiler and concerns over steam supply reliability from boiler shutdown, creating a need for further projects. He made the point that when considering investment aimed at overcoming energy efficiency constraints, it is important to consider how these may tie in with future plans for the site. Lee followed up with a look at an energy study performed for an Asian refinery, which resulted in a substantial drop in steam demand and increased operating flexibility. In addition, it changed the steam generation system from one that was unsafe when one main utility generator was offline to one that was unsafe only when two were offline.Concluding our coverage of the ARTC 15th Annual Meeting, GTForm takes a look at the... more
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"he NYPD has released security camera video of a brazen daytime shooting outside a McDonald's restaurant in Brooklyn on Tuesday. An 18-year-old man got into a verbal dispute with another man at about 3 p.m. on September 27, 2011, in front of 2154 Nostrand Avenue, police said. The second man then shot the 18-year-old four times, ran inside the McDonald's, and escaped through a side door, cops said. The restuarant is about a block from Brooklyn College. The victim suffered gunshot wounds to his torso, groin and leg and a graze wound to his head, police said. Medics rushed the victim to Kings County Hospital where was listed in critical but stable condition, the NYPD said" NY
Watch The Video http://www.waneenterprises.com/videos/livewire/92"he NYPD has released security camera video of a brazen daytime shooting outside... more
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A legendary television actor Jamil Fakhri passed away on Thursday 09 June, 2011 in Lahore after being hospitalised in critical condition since May 31. Fakhri, who had had a history of diabetes and blood pressure, was also a heart patient. He was put on a ventilator because his respiration was not strong enough. Family insiders said that the actor had been unable to control his anxiety ever since the kidnapping of his son, Ali Ayaz Fakhri in the US.A legendary television actor Jamil Fakhri passed away on Thursday 09 June, 2011 in... more
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The end of the world in 2012 is not a hoax. Many unexpected, unusual Earth signs and natural disasters have provided us solid proof of its existence. The scenario as filmed in a movie called “end of the world 2012” may once again play vividly in front of our eyes one day!The end of the world in 2012 is not a hoax. Many unexpected, unusual Earth signs and... more
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The wedding of Prince William with Catherine Middleton took place on Friday, 29 April 2011 at Westminster Abbey, London.The wedding of Prince William with Catherine Middleton took place on Friday, 29 April... more
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Famous Actor Moin Akhtar on Friday passed away after a heart attack in Karachi. He will be buried in Model Colony graveyard in Malir after Zohar prayers Saturday.Famous Actor Moin Akhtar on Friday passed away after a heart attack in Karachi. He... more
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Mini Rocketman revealed to the public worldwide for the first time at the International Geneva Motor Show with exterior dimensions of the classic MINI, but with an infusion of new ideas and design language. The unique 3+1 seater features 3 doors and has length just over 3 meters, cater to the urban lifestyle in big cities.Mini Rocketman revealed to the public worldwide for the first time at the... more
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Phish Summer Tour Dates 2011 And Video:Are you a Phish fan? Well guess what! Phish just announced their summer tour – and fans have been waiting to see the tour dates for a very long timePhish Summer Tour Dates 2011 And Video:Are you a Phish fan? Well guess what! Phish... more
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Phish Summer Tour Dates 2011 And Video:Are you a Phish fan? Well guess what! Phish just announced their summer tour – and fans have been waiting to see the tour dates for a very long time!Phish Summer Tour Dates 2011 And Video:Are you a Phish fan? Well guess what! Phish... more
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Surprise news is that Lara Dutta and Mahesh Bhupathi wedding was arranged at Victory Theme Mumbai, India. On Wednesday happy couple registered his marriage in Mumbai. Now Lara becomes Mrs. Bhupathi.Surprise news is that Lara Dutta and Mahesh Bhupathi wedding was arranged at Victory... more
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Esperanza Spaulding – Press Intervew : Entertainment News, Latest News , Latest Video , Hot Pictures – BennyHollywoodEsperanza Spaulding – Press Intervew : Entertainment News, Latest News , Latest... more
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Central Bureau of Investigation CBI today arrested the Former Telecom Minister A Raja with his two then associates.Central Bureau of Investigation CBI today arrested the Former Telecom Minister A Raja... more
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Jets head coach Rex Ryan is a very good game manager, who gets impatient. Ryan will usually take the big gamble, when his team hits a lull. If you can play your game, and limit the Jets first downs, eventually Rex Ryan will take a big risk. If you’re prepared for that, you can make the Jets pay.Jets head coach Rex Ryan is a very good game manager, who gets impatient. Ryan will... more
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A coroners investigator testified Friday that she found 12 bottles of a powerful anesthetic that contributed to the death of Michael Jackson in the singers bedroom and closet after he died...
http://www.indiareport.com/India-usa-uk-news/ap/National/77947A coroners investigator testified Friday that she found 12 bottles of a powerful... more
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A package addressed to the U.S. Homeland Security secretary ignited Friday at a postal facility, and authorities said it was similar to fiery parcels sent to Maryland officials a day earlier by someone complaining about the states terrorism tip line...
http://www.indiareport.com/India-usa-uk-news/ap/National/77942A package addressed to the U.S. Homeland Security secretary ignited Friday at a postal... more
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Regulators warned makers of caffeinated alcoholic drinks, often called 'blackout in a can', that their products are unsafe and violate federal laws, following a public outcry and several state bans. http://www.indiareport.com/India-usa-uk-news/reuters/Health/43977Regulators warned makers of caffeinated alcoholic drinks, often called 'blackout... more
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Some people who couldnt get their blood pressure under control despite taking a fistful of pills every day found relief from an experimental treatment that shows promise as a permanent fix for the condition. http://www.indiareport.com/India-usa-uk-news/ap/Health/43967Some people who couldnt get their blood pressure under control despite taking a... more
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