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公开(公告)号:US5842357A
公开(公告)日:1998-12-01
申请号:US959053
申请日:1997-10-28
CPC分类号: F25J3/0266 , B01D53/1418 , B01D53/1475 , C01B31/20 , C07C7/005 , C07C9/04 , F25J1/0022 , F25J1/0229 , F25J1/023 , F25J3/0209 , F25J3/0233 , B01D2258/05 , F25J2200/74 , F25J2200/94 , F25J2205/50 , F25J2210/04 , F25J2210/66 , F25J2210/80 , F25J2215/04 , F25J2220/62 , F25J2220/66 , F25J2220/80 , F25J2220/82 , F25J2220/84 , F25J2230/04 , F25J2230/30 , F25J2245/02 , F25J2260/20 , F25J2260/60 , F25J2260/80 , Y02C10/06 , Y02C10/12 , Y02E50/346 , Y02P20/152 , Y10S62/927 , Y10S62/929
摘要: A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated into a high heating value fuel, and a highly pure food-grade carbon dioxide product may also be recovered. Process streams may be used to provide fuel for compression and refrigeration and/or to regenerate carbon dioxide absorbent.
摘要翻译: 从填埋气体浓缩和回收甲烷和二氧化碳的过程包括使用减少量的二氧化碳吸收剂吸收常见的污染物,二氧化碳吸收剂本身可能是原位获得和可回收的成分。 分离的甲烷可以被浓缩成高热值燃料,并且还可以回收高纯度的食品级二氧化碳产品。 工艺流可用于提供用于压缩和制冷的燃料和/或再生二氧化碳吸收剂。
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公开(公告)号:US5681360A
公开(公告)日:1997-10-28
申请号:US371136
申请日:1995-01-11
CPC分类号: F25J3/0266 , B01D53/1418 , B01D53/1475 , C01B31/20 , C07C7/005 , C07C9/04 , F25J1/0022 , F25J1/0229 , F25J1/023 , F25J3/0209 , F25J3/0233 , B01D2258/05 , F25J2200/74 , F25J2200/94 , F25J2205/50 , F25J2210/04 , F25J2210/66 , F25J2210/80 , F25J2215/04 , F25J2220/62 , F25J2220/66 , F25J2220/80 , F25J2220/82 , F25J2220/84 , F25J2230/04 , F25J2230/30 , F25J2245/02 , F25J2260/20 , F25J2260/60 , F25J2260/80 , Y02C10/06 , Y02C10/12 , Y02E50/346 , Y02P20/152 , Y10S62/927 , Y10S62/929
摘要: A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated into a high heating value fuel, and a highly pure food-grade carbon dioxide product may also be recovered. Process streams may be used to provide fuel for compression and refrigeration and/or to regenerate carbon dioxide absorbent.
摘要翻译: 从填埋气体浓缩和回收甲烷和二氧化碳的过程包括使用减少量的二氧化碳吸收剂吸收常见的污染物,二氧化碳吸收剂本身可能是原位获得和可回收的成分。 分离的甲烷可以被浓缩成高热值燃料,并且还可以回收高纯度的食品级二氧化碳产品。 工艺流可用于提供用于压缩和制冷的燃料和/或再生二氧化碳吸收剂。
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公开(公告)号:US4623372A
公开(公告)日:1986-11-18
申请号:US629615
申请日:1984-07-11
IPC分类号: B01D9/00
CPC分类号: B01D9/0022
摘要: An improved crystallization process is disclosed for separating a crystallizable material and an excluded material which is at least partially excluded from the solid phase of the crystallizable material obtained upon freezing a liquid phase of the materials. The solid phase is more dense than the liquid phase, and it is separated therefrom by relative movement with the formation of a packed bed of solid phase. The packed bed is continuously formed adjacent its lower end and passed from the liquid phase into a countercurrent flow of backwash liquid. The packed bed extends through the level of the backwash liquid to provide a drained bed of solid phase adjacent its upper end which is melted by a condensing vapor.
摘要翻译: 公开了一种改进的结晶方法,用于分离可结晶材料和排除材料,所述可结晶材料和排除材料至少部分地从冷冻液相的材料中获得的可结晶材料的固相排除。 固相比液相更致密,并通过形成固相填充床的相对运动与其分离。 填充床在其下端附近连续形成,并从液相中流入逆流液体的逆流。 填充床延伸穿过反冲洗液体的水平,以在其上端附近提供固相的排水床,其被冷凝蒸气熔化。
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公开(公告)号:US5021232A
公开(公告)日:1991-06-04
申请号:US415100
申请日:1989-09-29
申请人: Ralph E. Hise , W. Jeffrey Cook
发明人: Ralph E. Hise , W. Jeffrey Cook
CPC分类号: C01B17/0456 , B01D53/485 , B01D53/50 , Y02P20/152 , Y10S62/922
摘要: A sulfur recovery process including a Claus reaction wherein sulfur-containing compounds are converted to elemental sulfur in the presence of a stoichiometric excess of hydrogen sulfide. The sulfurous compounds in the tail gas of the Claus reaction are separated for recycle using crystallization. Liquid carbon dioxide absorption is used to separate substantially all sulfur-containing compounds from a residual tail gas suitable for venting to the atmosphere.
摘要翻译: 包含Claus反应的硫回收方法,其中在化学计量过量的硫化氢存在下,含硫化合物转化为元素硫。 克劳斯反应的尾气中的亚硫酸化合物被分离用于循环使用结晶。 液体二氧化碳吸收用于将基本上所有的含硫化合物与适合于排放到大气中的残余尾气分离。
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