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1. 发明授权

US5596884A Cryogenic treatment of landfill gas to remove troublesome compounds 失效
标题翻译：低温处理垃圾填埋气去除麻烦的化合物
公开(公告)号：US5596884A
公开(公告)日：1997-01-28
申请号：US578856
申请日：1995-12-26
申请人： Stephen J. Markbreiter , Irving Weiss
发明人： Stephen J. Markbreiter , Irving Weiss
IPC分类号： B01D53/00 , B01D53/26 , F25J3/06 , F25J3/00
CPC分类号： B01D53/265 , B01D53/002
摘要： The cryogenic treatment of landfill gas removes troublesome compounds that cause severe corrosion of combustion engines in which the gas is used as fuel. It involves compressing the gas to an elevated pressure and isenthalpically expanding the gas to chill the gas to a temperature below -20 .degree. F. The compressed gas is first cooled to eliminate moisture as condensate. Methanol is injected into the gas so that it can be deeply chilled without forming ice with residual moisture in the gas. An aqueous methanol condensate containing troublesome compounds forms in, and is removed from, the deeply chilled gas before it is expanded to provide refrigeration for chilling the gas. By adding water to the aqueous methanol, the troublesome compounds lose solubility in diluted methanol and form a supernatant layer that can be separated for disposal. The diluted methanol can be recycled.
摘要翻译：垃圾填埋气体的低温处理消除了引起燃烧发动机严重腐蚀的麻烦的化合物，其中气体用作燃料。它包括将气体压缩到升高的压力，并使气体均匀膨胀以将气体冷却到低于-20°F的温度。压缩气体首先被冷却以除去作为冷凝物的水分。将甲醇注入到气体中，使其可以被深度冷却而不会在气体中形成具有残留水分的冰。在深度冷却的气体膨胀之前，含有麻烦的化合物的含水甲醇冷凝物形成并被除去，以提供用于冷却气体的制冷。通过向甲醇水溶液中加入水，麻烦的化合物在稀释的甲醇中失去溶解性，形成可以分离处理的上清液层。稀释的甲醇可以回收利用。

2. 发明授权

US4704146A Liquid carbon dioxide recovery from gas mixtures with methane 失效
标题翻译：从甲烷气体混合物中回收液态二氧化碳
公开(公告)号：US4704146A
公开(公告)日：1987-11-03
申请号：US891343
申请日：1986-07-31
申请人： Stephen J. Markbreiter , Irving Weiss
发明人： Stephen J. Markbreiter , Irving Weiss
IPC分类号： F25J3/02 , F25J3/08 , F25J3/00
CPC分类号： F25J3/0209 , F25J3/0233 , F25J3/0266 , F25J2200/02 , F25J2200/74 , F25J2205/40 , F25J2210/66 , F25J2215/04 , F25J2220/82 , F25J2230/30 , F25J2245/02 , F25J2270/90 , F25J2290/34 , Y02C10/12 , Y02E50/346 , Y10S62/929
摘要： Land-fill and other gases containing principally methane and carbon dioxide have been separated into high BTU fuel gas and discard carbon dioxide containing appreciable methane. Such discard gas can now be simply fractionated into high-purity liquid carbon dioxide with recoveries in excess of 80% while using a single refrigerant at a single low temperature to satisfy all refrigeration requirements of fractionation. This novel fractionation is ideally combined with the process of separating land-fill gas into high BTU fuel gas because then the methane and carbon dioxide are recovered completely as two valuable products, high BTU fuel gas and pure liquid carbon dioxide.
摘要翻译：主要包括甲烷和二氧化碳的填土和其他气体已经分离成高BTU燃料气体，并丢弃含有可观甲烷的二氧化碳。现在可以将这种废弃气体简单地分馏成高纯度液体二氧化碳，回收率超过80％，同时在单一低温下使用单一制冷剂以满足分馏的所有制冷要求。这种新型分馏理想地与将填埋气体分离成高BTU燃料气体的过程相结合，因为甲烷和二氧化碳完全回收为两种有价值的产物，高BTU燃料气体和纯液体二氧化碳。

3. 发明授权

US4822393A Natural gas pretreatment prior to liquefaction 失效
标题翻译：液化前天然气预处理
公开(公告)号：US4822393A
公开(公告)日：1989-04-18
申请号：US212870
申请日：1988-06-30
申请人： Stephen J. Markbreiter , Irving Weiss
发明人： Stephen J. Markbreiter , Irving Weiss
IPC分类号： C10L3/00 , F25J1/02 , F25J3/02 , F25J3/00
CPC分类号： F25J3/0266 , C10L3/00 , F25J1/0022 , F25J1/0237 , F25J1/0274 , F25J3/0209 , F25J3/0233 , F25J2205/50 , F25J2205/60 , F25J2220/66 , F25J2245/90 , F25J2260/20 , F25J2290/80 , Y02C10/12 , Y10S62/929
摘要： Conventional liquified natural gas (LNG) plants are designed to eliminate moisture and up to 1.0% by volume of carbon dioxide (CO.sub.2) present in gas delivered by pipelines. Pipelines can no longer be expected to supply gas with such a low CO.sub.2 content. The invention pretreates gas with as much as 1.5% to 3.5% by volume of CO.sub.2 so that it becomes acceptable to LNG plants. The pretreatment involves scrubbing natural gas with cold methanol at a temperature below -30.degree. F. and flashing absorbed CO.sub.2 from methanol withdrawn from the scrubber by passing it through a pressure-reducing valve, followed by two successive warming flashings of CO.sub.2. Then, the methanol can be recycled to the scrubber. Required refrigeration is supplied to the methanol entering or leaving the scrubber.
摘要翻译：传统的液化天然气（LNG）设备旨在消除水分和高达1.0体积％的管道输送气体中存在的二氧化碳（CO2）。管道不再能够提供具有如此低二氧化碳含量的气体。本发明预处理多达1.5％至3.5％（体积）的二氧化碳的气体，使其成为可接受的LNG装置。预处理包括在低于-30°F的温度下用冷甲醇洗涤天然气，并通过将其从减压阀中取出的甲醇从吸收的甲醇中吸收CO 2，然后连续两次加热闪蒸。然后，甲醇可以再循环到洗涤器中。向进入或离开洗涤器的甲醇提供所需的制冷。

4. 发明授权

US4252548A Carbon dioxide removal from methane-containing gases 失效
标题翻译：从含甲烷气体中除去二氧化碳
公开(公告)号：US4252548A
公开(公告)日：1981-02-24
申请号：US196
申请日：1979-01-02
申请人： Stephen J. Markbreiter , Irving Weiss
发明人： Stephen J. Markbreiter , Irving Weiss
IPC分类号： C07C7/00 , C07C7/11 , F25J3/08 , F25J1/02
CPC分类号： C07C7/005 , B01D53/1475 , B01D53/265 , C07C7/11 , B01D2256/24 , B01D2257/504 , B01D2258/05 , Y02C10/06 , Y02P20/152 , Y10S62/929
摘要： Methane-containing gases with an appreciable content of carbon dioxide are scrubbed with cold methanol to remove the bulk of the carbon dioxide in a simple system comprising a single gas-liquid contact column and featuring regeneration of the methanol containing carbon dioxide solely by multiple-stage flashing. Land-fill gases containing methane and carbon dioxide as the principal components can be economically processed in such a system to yield methane-rich fuel gases.
摘要翻译：含有可观二氧化碳含量的含甲烷的气体用冷甲醇洗涤，以便在包含单一气 - 液接触塔的简单系统中除去大部分二氧化碳，并且特征在于仅通过多级再生含甲醇的二氧化碳闪烁。以甲烷和二氧化碳为主要成分的填埋气体可以在这种系统中经济地处理，以产生富含甲烷的燃料气体。

5. 发明授权

US4563203A Refrigeration from expansion of transmission pipeline gas 失效
标题翻译：传输管道气体扩张制冷
公开(公告)号：US4563203A
公开(公告)日：1986-01-07
申请号：US601013
申请日：1984-04-16
申请人： Irving Weiss , Hans P. Schorr
发明人： Irving Weiss , Hans P. Schorr
IPC分类号： F17D1/05 , F17D1/07 , F25B9/06 , F25J3/00
CPC分类号： F17D1/05 , F17D1/07 , F25B9/06
摘要： Refrigeration is produced while delivering transmission pipeline gas of elevated pressure to a branch pipeline of lower pressure by expanding the gas in a turbo-expander to a pressure below the branch pipeline pressure and recovering refrigeration from the expanded gas which is then compressed by a centrifugal compressor directly driven by the turbo-expander to the pressure required for delivery into the branch pipeline. Preferably, the gas is dehydrated by adding methanol and separating aqueous methanol condensate from the expanded gas, and the condensate is distilled with compression heat to recover methanol for reuse.
摘要翻译：通过将涡轮膨胀机中的气体膨胀至低于分支管道压力的压力并且从膨胀气体中回收制冷，然后通过离心式压缩机压缩而将升压的输送管道气体输送到较低压力的分支管线由涡轮膨胀机直接驱动到输送到分支管道所需的压力。优选地，通过加入甲醇并从膨胀气体中分离甲醇缩合物来脱气，并且用压缩热蒸馏冷凝物以回收甲醇以供再利用。

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