CO2 removal from contaminated natural gas mixtures by hydrate formation
CO2 removal from contaminated natural gas mixtures by hydrate formation
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DOI：
10.1021/ie8017065
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发表时间：
2009-05
影响因子：
4.2
通讯作者：
Mark van Denderen;Erik Ineke;M. Golombok
中科院分区：
文献类型：
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作者：
Mark van Denderen;Erik Ineke;M. Golombok
我们分析了甲烷/CO2混合物与污染的井气流，这导致在甲烷富集的气体产品的气体水合物的形成率。初始压力影响最终的清洁气体组成和达到该组成所需的时间。虽然已经描述了促进剂，但我们注意到，该术语通常指的是稳定平衡水合物结构的间隙材料，而不是经典的化学速率促进剂（即，催化剂）。我们还表明，以前报道的水合物速率改进剂是无关的商业目的，因为它们只是克服不充分的混合系统。我们确定的关键过程中需要速率加速，并显示出减少这个过程的时间，使选择性的CO2水合物形成商业上有吸引力的潜力。我们还研究了盐度对CO2水合物选择性形成的影响。相边界压力随着盐浓度的增加而增加，形成速率降低。表格...
We analyzed the formation rates of gas hydrates from methane/CO2 mixtures associated with contaminated well gas streams, which results in a methane-enriched gas product. The initial pressure affects both the final clean gas composition and the time taken to achieve it. Although promoters have been described, we note that this term often refers to interstitial materials that stabilize equilibrium hydrate structures rather than classical chemical rate promoters (i.e., catalysts). We also show that previously reported hydrate rate improvers are irrelevant for commercial purposes because they merely overcome inadequate mixing systems. We identify the key process requiring rate acceleration and show the potential for reducing the time for this process to make selective CO2 hydrate formation commercially attractive. We also examine the effect of salinity on the selective formation of CO2 hydrates. The phase boundary pressures increase with increasing salt concentration, and the rate of formation decreases. Form...