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    • 5. 发明申请
    • PROCESS FOR REMOVING CO2 FROM CRUDE NATURAL GAS
    • 从天然气中去除二氧化碳的方法
    • WO2016142649A1
    • 2016-09-15
    • PCT/GB2016/050510
    • 2016-02-26
    • JOHNSON MATTHEY DAVY TECHNOLOGIES LIMITED
    • TILLEY, Simon NicholasSWINNEY, JohnWATSON, David J.
    • B01D53/22B01D53/86B01D53/90C10L3/10
    • B01D53/229B01D53/225B01D53/864B01D53/8696B01D53/90B01D2251/11B01D2251/208B01D2255/1021B01D2255/1023B01D2255/1028B01D2256/22B01D2256/245B01D2257/504B01D2257/7025C10L3/104Y02C10/04Y02C10/10Y02C20/20
    • A method for treating a crude natural gas feed stream comprising methane and having a first carbon dioxide concentration, said method comprising the steps of: subjecting the crude natural gas feed stream to a separation process to provide: a purified natural gas stream having a second carbon dioxide content which is lower than the first carbon dioxide concentration in said crude natural gas stream; and, a carbon dioxide stream comprising carbon dioxide as the major component and methane; recovering the purified natural gas steam; optionally mixing the carbon dioxide stream with make-up methane and/or make-up air; passing the carbon dioxide stream and optional make-up methane or air through a heat exchanger to raise the temperature of the stream to the desired inlet temperature Τ 1 of an oxidation reactor; optionally mixing the carbon dioxide stream with make-up methane and/or make-up air; passing the heated stream from step (d) and any optional make-up methane and/or air to the oxidation reactor containing an oxidation catalyst, where the methane is oxidised; removing a gas stream including the products of the oxidation reaction from the reactor, said gas stream being at an outlet temperature T 2 which is higher than the inlet temperature Τ 1 ; passing the gas stream removed in step (g) through the heat exchanger against the carbon dioxide stream from step (a) to allow the heat to be recovered from the gas stream removed in step (g) and utilised to heat the carbon dioxide stream in step (d); and measuring the outlet temperature T 2 and controlling the inlet temperature Τ 1 by adjusting the amount of make-up methane and/or air added in step (c) and/or step (e).
    • 一种用于处理包含甲烷并具有第一二氧化碳浓度的粗天然气进料流的方法,所述方法包括以下步骤:对粗天然气进料流进行分离过程,以提供:具有第二碳的纯化天然气流 所述二氧化碳含量低于所述粗天然气流中的第一二氧化碳浓度; 和包含二氧化碳作为主要成分的二氧化碳流和甲烷; 回收净化天然气蒸汽; 任选地将二氧化碳流与补充甲烷和/或补充空气混合; 使二氧化碳流和任选的补充甲烷或空气通过热交换器将流的温度升高到氧化反应器的所需入口温度T 1; 任选地将二氧化碳流与补充甲烷和/或补充空气混合; 将来自步骤(d)的加热流和任何任选的补充甲烷和/或空气送入包含氧化催化剂的氧化反应器,其中甲烷被氧化; 从反应器中除去包括氧化反应产物的气流,所述气流处于高于入口温度T 1的出口温度T2; 将步骤(g)中除去的气流通过热交换器抵靠来自步骤(a)的二氧化碳流,以允许从步骤(g)中除去的气流中回收热量,并用于将二氧化碳流加热 步骤(d); 并且通过调节步骤(c)和/或步骤(e)中添加的补充甲烷和/或空气的量来测量出口温度T2并控制入口温度T 1。
    • 9. 发明申请
    • SYSTEM FOR THE CAPTURE AND RELEASE OF ACID GASES
    • 酸气捕获和释放系统
    • WO2015092427A2
    • 2015-06-25
    • PCT/GB2014/053786
    • 2014-12-19
    • C-CAPTURE LTD
    • RAYNER, Christopher MarkBARNES, Douglas CahalaneJAKAB, GergelySCHOOLDERMAN, Caspar
    • B01D53/14
    • B01D53/1425B01D53/1456B01D53/1475B01D53/1493B01D53/48B01D53/62B01D53/96B01D2251/30B01D2251/302B01D2251/304B01D2251/306B01D2251/40B01D2251/80B01D2252/103B01D2252/20B01D2252/202B01D2252/2025B01D2252/2041B01D2252/20447B01D2252/20452B01D2252/20484B01D2252/20489B01D2252/2056B01D2252/504B01D2257/30B01D2257/504C10L3/104C10L2290/541Y02C10/04Y02C10/06Y02C20/20
    • In one aspect, the invention provides a method for the capture of at least one acid gas in a composition, the release of said gas from said composition, and the subsequent regeneration of said composition for re-use, said method comprising performing, in order, the steps of: (a) capturing the at least one acid gas by contacting said at least one gas with a capture composition comprising at least one salt of a carboxylic acid and at least one water-miscible non-aqueous solvent; (b) releasing said at least one acid gas by adding at least one protic solvent or agent to said composition; and (c) regenerating the capture composition by partial or complete removal of said added protic solvent or agent from said composition. Optionally, said capture composition comprising at least one salt of a carboxylic acid and at least one water-miscible non-aqueous solvent additionally comprises water or another protic solvent. In another aspect, the invention envisages a composition which additionally comprises at least one protic solvent or agent and release of the at least one acid gas is achieved solely by subjecting the composition to the application of heat or stripping with a stream of air. The method is typically applied to the capture and subsequent release of carbon dioxide, and offers a convenient and simple process which uses inexpensive consumables and offers significant advantages over the methods of the prior art.
    • 在一个方面,本发明提供了一种用于捕获组合物中的至少一种酸性气体,从所述组合物中释放所述气体以及随后再生所述组合物以供再利用的方法,所述方法包括按顺序执行 步骤:(a)通过使所述至少一种气体与包含至少一种羧酸盐和至少一种水混溶性非水溶剂的捕获组合物接触来捕获所述至少一种酸性气体; (b)通过向所述组合物中加入至少一种质子溶剂或试剂来释放所述至少一种酸性气体; 和(c)通过从所述组合物中部分或完全除去所述添加的质子性溶剂或试剂来再生捕获组合物。 任选地,包含至少一种羧酸盐和至少一种与水可混溶的非水溶剂的所述捕获组合物另外包含水或另一种质子溶剂。 在另一方面,本发明设想了另外包含至少一种质子溶剂或试剂的组合物,并且仅通过使组合物施加热或用空气流汽提来实现至少一种酸性气体的释放。 该方法通常用于捕获和随后释放二氧化碳,并且提供了使用廉价的消耗品的方便和简单的方法,并且与现有技术的方法相比具有显着的优点。