That is not because it is hard. Since 1996, for example, Statoil, Norway s largest oil company,has captured and stored the CO2 which forms part of the natural gas extracted from theSleipner field in the North Sea. Rather, the process consumes a lot of power that would nototherwise have to be generated-which is ironic, and also makes it expensive. Hence theneed for experiments like those at Mongstad, to try to improve and cheapen it.
这些并不是因为难度问题。比如自从1996年以来,挪威最大的石油公司就从北海的斯莱普内尔气田开采的天然气里收集并储存二氧化碳。但是有讽刺意味的是这个过程成本高昂并且会消耗大量能源。因此需要做类似蒙斯塔的试验,做出改进,降低消耗。
Burying bad news
隐瞒坏消息
The most common capture technologies involve running the gas to be processed through asolution of amines or ammonium carbonate. These react with CO2 to form solublechemicals called carbamates and bicarbonates. The remainder of the exhaust can then be vented safely to the atmosphere. The carbon-rich solution,meanwhile, is treated in a separate vessel to release its burden of CO2, which can then bepiped away and stored, and the amines or ammonium carbonate thus liberated recycled.
最普通的收集技术是用胺类溶液或者碳酸铵处理这些气体。这些物质和二氧化碳发生反应生成氨基甲酸盐和碳酸氢盐。废气的剩余物可以安全地排到大气。与此同时,在单独的容器中处理含碳丰富的溶液,将其负载的二氧化碳释放,用管子排走并储存起来,离析的胺或碳酸铵可以被循环利用。
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