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North of Los Angeles, near Bakersfield, California, is a pilot plant full of rocket technology. Rudi Beichel, the space pioneer with German roots who helped the U.S. to reach the moon, worked there on the development of rocket engines for a long time. He was nearly 80 years old - an age at which most of his colleagues had retired - when he accepted a new challenge and set out to develop a fossilfuel power plant that generates electricity with practically zero emissions.
In 1993, six years before his death at 86, Beichel established the Clean Energy Systems (CES) company. Today the company’s work is bearing fruit. CES has developed a combustion chamber that can burn an extremely wide variety of fuels for a 50-megawatt (MW) test power plant. What makes this plant special is the fact that it emits no carbon dioxide (CO2) or other exhaust gases into the atmosphere. It is one of the first zero-emission plants in the world - and the largest of its kind. The company’s innovative technology has piqued the interest of Siemens. “We worked on similar ideas in the 1990s,” says Frank Bevc, Director of Technology Policy and Research Programs at Siemens Energy in Orlando, Florida. “We were impressed by how Clean Energy Systems has implemented its ideas.”
The central innovation from CES is its “direct oxyfuel process.” Whereas natural gas requires little pretreatment, coal, coke, and biomass must first be converted into a gas and then cleansed of sulfur or ammonia compounds. The resulting gas is then fed into a combustion chamber where pure oxygen rather than air is used for combustion. The advantage of this is that the nitrogen that consti tutes three quarters of the air does not have to be passed through the combustion process, and only oxygen, hydrogen, and hydrocarbons such as methane are burned in the combustion chamber. The flue gas produced by this process is composed mainly of carbon dioxide and water vapor.
Pilot plants built by power producers Vattenfall and E.ON in the Lusatia region of eastern Germany and in Ratcliff, UK, respectively, have also recently begun burning coal with oxygen, but in these cases the flue gas is recirculated into the combustion process to increase the level of CO2 and to control the temperature (see article “Coal’s Cleaner Outlook”, Pictures of the Future 1/2008). CES, on the other hand, uses water for cooling, as well as higher pressure, which in turn results in higher efficiency for electricity generation. In the CES plant, a heat exchanger is used to cool the hot flue gas after it has passed through the turbine. The water vapor condenses out of the flue gas as it cools, leaving behind the CO2, which can then be drawn off. In this way, more than 99 percent of the carbon dioxide can be prevented from entering the atmosphere.
CES’s 50 MW plant is too small to generate electricity commercially, according to Keith Pronske, President and CEO of CES. “But the plant is already industrially attractive to anyone who has natural gas available as a fuel and needs carbon dioxide for the extraction of gas or oil from the ground,” says Pronske. He points out that liquefied carbon dioxide from such a plant can be pumped into oil-bearing layers of rock to increase pressure and extract oil from old wells.
What is it about CES’s technology that intrigues Siemens? “The company’s innovative combustion chamber is an excellent complement to our turbine expertise,” says Bevc. Working closely with CES, and with financial support from the U.S. Department of Energy, in 2006 Engineers from Siemens Energy in Florida began development of a 200 MW power plant based on combustion with oxygen. Siemens is contributing an innovative gas turbine design to the project.
The gas turbine must be able to withstand a hot and moist environment that is normally the domain of steam turbines. The dense gas stream has a pressure of 15 bars, a temperature of roughly 1,200 degrees Celsius, and is comprised of 80 percent water vapor and 20 percent CO2.
A vintage Siemens SGT 900 gas turbine has been specially adapted for such conditions, and the efforts of its developers are paying off in the form of high efficiency. Because the temperature of the stream entering the turbine is very high for such a moist, high-pressure environment, the plant’s efficiency is over 40 percent with natural gas and over 30 per cent with gasified coal. These are modest numbers compared to the efficiency of a modern coal-fired power plant, which without carbon dioxide separation, is over 40 percent. However, Siemens hopes to exceed these values with its next generation of turbines, which are scheduled to be introduced in 2015. The new turbines should have an efficiency of roughly 50 percent for natural gas and 40 percent for coal.
Carbon Dioxide Laundry. This isn’t the only approach to the separation of carbon dioxide that Siemens is pursuing. In addition to the oxyfuel method, the company is pressing forward with development of so-called IGCC (integrated gasification combined cycle) plants. These installations use entrained flow bed gasification and scrubbing processes to separate greenhouse gases from fuel gas prior to combustion (pre-combustion carbon capture). IGCC technology is now so mature that it can be deployed on an industrial scale. Siemens is also currently working to develop an efficient and environmentally-friendly post-combustion carbon capture process based on amino acid salts, which can even be retrofitted to meet the requirements of existing fossil-fueled power plants (see article “Scrubbing Agent is a Winner”).
“Despite our internal development work, we are always on the lookout for partners such as Clean Energy Systems that can help us to further advance our CO2 separation technologies,” says Robert Shannon of Siemens Energy in Florida. “We’re also interested in experimental, potentially revolutionary research approaches.”
Siemens found one such development at the Massachusetts Institute of Technology (MIT), which has been chosen by Siemens as a Center for Knowledge Interchange (CKI). CKIs are special universities with which the company has signed close framework and research contracts. Chemical Engineering Professor T. Alan Hatton and Howard Herzog, an MIT specialist in carbon dioxide sequestration, told Siemens about a method by which CO2 can be removed from a flue gas stream at a potentially low energy cost, which makes the technique extremely economical. A cooperation project on the topic commenced in 2008.
The basic idea behind this partnership can be summed up as follows: Most separation methods remove carbon dioxide from flue gas by using special scrubbing liquids, which are later heated. The process is effective, but it is also very energy-intensive. Hatton’s idea is to pass the flue gas through special salts rather than scrubbing agents. Unlike known scrubbing agents, the salts have a melting point of less than 100 degrees Celsius. They absorb CO2 in the liquid state and release it again when they are induced by an electromagnetic field to change to a semicrystalline solid state.
“This could reduce the energy consumption associated with carbon dioxide separation by 50 or even 75 percent,” says Hatton’s research partner, Dr. Thomas Hammer of Siemens Corporate Technology (CT) in Erlangen, Germany. “However,” he adds, “with this brand new method, we can’t expect a commercial application for at least ten years.” The quantities with which the MIT and Siemens researchers are working in the laboratory are modest at the moment. “No more than a thimblefull,” says Hatton.
CO2 Goes Underground. If carbon dioxide separation is successful, the gas will still need to be disposed of permanently. CES, for example, has already found one way to do this. The fact that it could be easily reconfigured to suit the company’s needs is not the only reason that CES purchased the Bakersfield power plant. The plant is also strategically located over rock strata that can hold billions of tons of trapped CO2. That’s enough to store centuries worth of the CO2 produced each year by the planned 200 MW power plant. Another option is to sell the separated CO2 - for example, to the operators of depleted oil fields in the surrounding area, who would pump the CO2 deep below the surface to increase oil extraction rates.
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Children looking at books from a mobile library in 1949
Britain is today celebrating National Libraries Day, though the celebrations are unlikely to be mistaken for the Queen’s diamond jubilee, say, or the London Olympics. And although the occasion represents, more than anything, a form of protest, one does not sense the prime minister cowering in terror.
Free draw at all West Berkshire libraries! Big book sale at South Petherton! Coffee morning at Morpeth! “Where’s Wally?” competition at Waterlooville!
There is also a charming new slim volume, The Library Book, in which two dozen writers rush, in their own ways, to the rescue of an institution in distress: Stephen Fry talks of his discovery of Oscar Wilde via the Norfolkmobile library; Julian Barnes imagines a not-too-distant future of library burning; Alan Bennett (his presence is compulsory) reminisces splendidly about Leeds circa 1940. All this is, of course, preaching to the converted, which in theory is a useful first step before working on the unconverted.
The most accurate-looking count I can find suggests that of the 4,612 public libraries (including mobile ones) that existed in the UK last April, 407 are now closed, on death row, facing privatisation or being handed over to the community to be run by volunteers. Frankly, the last two options both sound like mere stays of execution. This is, of course, a direct result of Britain’s austerity measures, imposed by ministers whose local libraries, you might think, had insufficient copies of the works of JM Keynes.
Machiavelli may have been more readily available: the government outsourced the first wave of cuts to local councils, enabling ministers to stand back and disclaim responsibility. The councils then successfully allowed the focus to fall on libraries, which typically constitute less than 2 per cent of their spending, knowing that would galvanise the literate middle class. This could have two entirely separate purposes: Labour councillors might wish to arouse public indignation, in the hope that it would attach itself to the government rather than them; the government’s allies might wish to deflect attention from more significant measures.
This is not wholly a British phenomenon: in the US, central libraries – not just neighbourhood branches – have been threatened in, for example, Troy, Michigan (saved at the last minute) and Gary, Indiana. Since what goes on in the Midwest rustbelt is of little moment in New York or California, these cases have created very little fuss.
However, the British hoo-ha has gone beyond coffee mornings and Where’s Wally? competitions, and occasionally bordered on the histrionic. “To close a library is a crime,” said Michael Morpurgo. “We have to stand up against the barbarians,” cried Philip Pullman. In north London a group of celebrities unsuccessfully challenged Brent Council in court. Even the magazine Private Eye, the nation’s most reliable debunker of passing orthodoxies, has gone all didactic on us: “Six Myths About Why We Don’t Need Libraries Any More”.
There have also been elements of the hilarious: Zadie Smith has told, in The Library Book and elsewhere, how she grew up in a flat lined with books, most of them stamped with the words, Property of Willesden Green Library. “It was a happy day in our household,” she wrote, “when my mother spotted a sign pinned to a tree in the high road: “Willesden Green Library, Book Amnesty.” This was not her mother’s version. She told the Mail on Sunday, with a mother’s sad sigh: “I think Zadie was using a bit of creative licence.”
Then, last month, the artist Jamie Reid, most famous for designing the Sex Pistols’ most outraging-the-bourgeoisie album cover in the 1970s, intervened. He has, according to the London Evening Standard, “designed prints with the slogans ‘Education is a birthright!’ and ‘Free the books/ books for free/ save Kensal Rise library’ and put them on display during the Moods of Norway art exhibition at the Paul Stolper Gallery in Los Angeles.” I am not making this up. Heaven knows what Norway has to do with it.
Two precedents spring to mind. The obvious one is the 1980s when the chattering classes hurled themselves, screaming, against the brick wall of the Thatcher government. Perhaps more apt is the analogy with the response to the closure of much of Britain’s railway network in the 1960s. The lists of dead and dying libraries have the same poetic solemnity as the old lists of doomed stations: Allerton Bywater, Armley Heights, Baddesley Ensor, Barham Park, Bedworth Heath, Belle Isle ... And, perhaps most picturesquely, Foggy Furze in Hartlepool, closed for the grand annual saving of £47,536, slightly more than a quarter of the council chief executive’s salary. Hartlepool, a reasonable body double for Gary, Indiana, has fewer celebrities than Brent.
The connection, however, is more profound than that. The Public Libraries Act, the crucial moment in the development of this public service in Britain, was passed in 1850, just as the railways were spreading across the country. The act was opposed by the same romantic Tories who hated the railways, although the intentions of its proponents were not necessarily wholly benign. According to one study, advocates saw the public library “as a counter-agent to evils rather than as a positive force for educational and recreational benefit”.
And now all the Foggy Furzes, like the country stations, are being mourned by people who never made use of the facilities when they existed. Among adults, library usage has been declining quite sharply – there were 253m book issues in 2003-2004 and 215m in 2008-2009. Against that, the figures for children’s books are up. And the other side of the argument also holds good: Dr Richard Beeching, the Fat Controller who axed the trains, could read a balance sheet but utterly failed to predict the renewed importance of railways in the 21st century. One detects the same lack of strategic vision behind the current tactics.
For library closures are not a global phenomenon. South Korea has just announced plans to spend £300m on opening 180 public libraries, with the specific aim of promoting reading. And that might well send a shiver down David Cameron’s spine.
The British picture is not uniformly bleak: three of England’s largest cities, Birmingham, Liverpool and Manchester, are all engaged in projects to open either new or completely reconstructed central libraries – schemes dating back to what might one day be considered Good King Gordon Brown’s Golden Days. However, another big city central library, in Bradford, is largely closed, with no clear plans for re-opening, due to past structural neglect.
These new libraries will not be wholly traditional. Manchester council’s website says: “In the past, libraries were all about books. Now they’re about people,” which is the sort of drivel you expect on council websites. To some extent, British libraries have been about people ever since the Mental Health Act of 1983 released large numbers of inpatients into what was euphemistically known as “care in the community”, which often meant the care of the only warm free-of-charge place available, ie the library.
However, libraries are, were and always should be about access to knowledge, a word that goes beyond mere information, and includes the stimulation and self-awareness that comes from reading fiction. All that has changed is that the methods of disseminating knowledge have become more varied. My own large collection of reference books is now largely unthumbed. For me, as for almost everyone else, the first step towards fact-checking now comes via Google or Wikipedia. The important thing is that it should not be the last step. And that our children should move on from the crawling and toddling stages of cutting and pasting the first page they find and move on to confident voyages of discovery in the vastness of cyberspace – and books.
It is obviously in the national interest to make this happen, rather than handing the planet’s intellectual leadership to the South Koreans. But it no longer seems either necessary or sufficient to house a feeble collection of volumes in a dreary building on every High Street.
What people need first and foremost is easy access to a computer, a fast connection, a quiet, warm place to use it and, if need be, someone to help them do so. It seems to me this should be the basic public obligation: for those unable to afford computers; for the benefit of kids trying to study in overcrowded flats with paper-thin walls; for old people terrified of the technology; perhaps for those released under mental health legislation; even for the bourgeoisie whose broadband has crashed (“nightmare!”). I haven’t been to Foggy Furze lately but I suspect it is a bit light on internet cafés.
The provision of books remains a vital but secondary obligation, which in such places might most sensibly be focused on children. But these neighbourhood learning centres could also function as shop windows and agents for the reinvigorated central libraries. There is as yet no wholly satisfactory method of loaning books via e-readers but one will doubtless emerge.
There is another potential place where a love of reading could sensibly be inculcated into the young. It is called “a school”. Unfortunately, many teachers seem largely to have given up on this. A librarian friend at a middling big city comprehensive school says the magician-inspired boom in pre-teen reading has now largely played itself out. “I find the 11-year-olds still get some books for Christmas and still read a bit,” he says. “But at that age the parents may have some control over what they do. As they get older, say 13, they’ve got so many things competing for their time, and they seem to stop completely.
“It’s been really noticeable the last five years as Facebook has taken hold. I did a survey asking if there was a book they would like to recommend. The older kids nearly all came up with the same answer: ‘Nope.’” Tomorrow’s councillors, probably.