Detail Pipecleaner   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 403 no. 8787 (Jun. 2012), page S7. Topik: Innovations; Pipelines; Oilfield Equipment & Services; Chemical Engineering Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.72 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel Cool a mixture of natural gas and water down to its freezing point and the result is an icy material called methane hydrate. Visionaries see this substance, which is common in the depths of the ocean, as a novel source of fossil fuel. Oil companies, however, have a less rosy view of it, at least in the short term. The reason is that one place in the ocean depths where methane hydrate forms all too frequently is inside pipes carrying oil from undersea wells to rigs at the surface. Like plaque in arteries, this accumulation restricts the flow of fluid and sometimes blocks things up completely. One way to keep the oil flowing is to heat the pipe. That, though, is costly. Another is to pump antifreeze, in the form of methanol, down it from time to time. But methanol is toxic, so this creates an environmental hazard. Kripa Varanasi and his colleagues at the Massachusetts Institute of Technology, however, think they have found a third way. As they describe in Physical Chemistry Chemical Physics, they propose to make the pipes' interiors so slippery that methane hydrate will be unable to stick to them in the first place. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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