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1. 发明授权

US06814948B1 Exhaust gas treating systems 失效
标题翻译：废气处理系统
公开(公告)号：US06814948B1
公开(公告)日：2004-11-09
申请号：US09642009
申请日：2000-08-21
申请人： Akinori Yasutake , Toshihiko Setoguchi , Norihisa Kobayashi , Takahiro Kasuh , Masaaki Yoshikawa , Isao Mochida
发明人： Akinori Yasutake , Toshihiko Setoguchi , Norihisa Kobayashi , Takahiro Kasuh , Masaaki Yoshikawa , Isao Mochida
IPC分类号： B01D5360
CPC分类号： B01J35/00 , B01D53/508 , B01D53/565 , B01D53/60 , B01J21/18 , Y02A50/2344
摘要： An active carbon for use in the treatment of exhaust gas can be obtained by heat-treating a starting active carbon fiber derived from polyacrylonitrile, pitch or the like or a starting particulate active carbon in a non-oxidizing atmosphere. The heat-treating temperature is preferably in the range of 600 to 1,200 ° C. for use in the desulfurization of exhaust gas, and in range of 600 to 1,000° C. for use in the denitration of exhaust gas. By using the resulting heat-treated active carbon for the purpose of desulfurization, the sulfur oxide concentration in exhaust gas can be reduced to 5 ppm or below. Moreover, by using the heat-treated active carbon in combination with conventional denitration based on selective catalytic reduction, the nitrogen oxide concentration in exhaust gas can be reduced to 1 ppm or below.
摘要翻译：用于废气处理的活性炭可以通过在非氧化性气氛中热处理由聚丙烯腈，沥青等衍生的起始活性炭纤维或起始粒状活性炭来获得。在废气脱硫中的热处理温度优选为600〜1200℃，在废气脱硝中为600〜1000℃。通过使用得到的经热处理的活性炭进行脱硫，排气中的硫氧化物浓度可以降低到5ppm以下。此外，通过使用经热处理的活性炭与基于选择性催化还原的常规脱硝组合，废气中的氮氧化物浓度可以降低至1ppm或更低。

2. 发明授权

US06610263B2 System and process for removal of pollutants from a gas stream 失效
公开(公告)号：US06610263B2
公开(公告)日：2003-08-26
申请号：US09919600
申请日：2001-07-31
申请人： John E. Pahlman , Steve C. Carlton , Ray V. Huff , Charles F. Hammel , Richard M. Boren , Kevin P. Kronbeck , Joshua E. Larson , Patrick A. Tuzinski , Steve G. Axen
发明人： John E. Pahlman , Steve C. Carlton , Ray V. Huff , Charles F. Hammel , Richard M. Boren , Kevin P. Kronbeck , Joshua E. Larson , Patrick A. Tuzinski , Steve G. Axen
IPC分类号： B01D5360
CPC分类号： B01D53/0454 , B01D53/04 , B01D53/0423 , B01D53/0446 , B01D53/06 , B01D53/08 , B01D53/12 , B01D53/30 , B01D53/346 , B01D53/508 , B01D53/565 , B01D53/60 , B01D53/64 , B01D53/83 , B01D53/8609 , B01D53/8628 , B01D53/8665 , B01D2253/10 , B01D2253/112 , B01D2253/304 , B01D2253/306 , B01D2257/302 , B01D2257/304 , B01D2257/404 , B01D2257/602 , B01D2258/00 , B01D2259/40 , B01D2259/41 , B01J23/34 , B01J23/92 , B01J35/023 , C22B7/006 , C22B7/02 , C22B43/00 , F23J15/006 , F23J15/02 , F23J2215/10 , F23J2215/20 , F23J2215/60 , F23J2217/101 , F23J2219/60 , G05D7/0635 , G05D16/2013 , G05D21/02 , G05D23/1917 , Y02C20/10 , Y02P10/132 , Y02P10/146 , Y02P10/234 , Y10S423/05
摘要： System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. The oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e.g., bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies. Reacted sorbent may be removed from the reaction action zones for recycling or recycled or regenerated with useful and marketable by-products being recovered during regeneration.

3. 发明授权

US06592829B2 Carbon dioxide recovery plant 有权
标题翻译：二氧化碳回收厂
公开(公告)号：US06592829B2
公开(公告)日：2003-07-15
申请号：US09774031
申请日：2001-01-31
申请人： Shrikar Chakravarti , Amitabh Gupta
发明人： Shrikar Chakravarti , Amitabh Gupta
IPC分类号： B01D5360
CPC分类号： B01D53/62 , B01D53/1418 , B01D53/1475 , B01D2257/504 , C01B32/50 , Y02C10/04 , Y02C10/06 , Y02P20/152
摘要： A system for recovering absorbate such as carbon dioxide from an oxygen containing mixture wherein carbon dioxide is concentrated in an alkanolamine containing absorption fluid, oxygen is separated from the absorption fluid, the resulting fluid is heated, and carbon dioxide is steam stripped from the absorption fluid and recovered.
摘要翻译：从含氧混合物中回收吸收剂如二氧化碳的系统，其中二氧化碳浓缩在含有链烷醇胺的吸收流体中，氧从吸收流体中分离出来，所得流体被加热，二氧化碳从吸收流体中蒸汽汽提并恢复。

4. 发明授权

US06217831B1 Catalyst for purifying exhaust gases 失效
标题翻译：废气净化催化剂
公开(公告)号：US06217831B1
公开(公告)日：2001-04-17
申请号：US08909049
申请日：1997-08-11
申请人： Hiromasa Suzuki , Naoto Miyoshi
发明人： Hiromasa Suzuki , Naoto Miyoshi
IPC分类号： B01D5360
CPC分类号： B01D53/945 , B01D2255/2042 , B01D2255/2073 , B01D2255/20738 , B01D2255/20746 , B01D2255/20753 , B01D2255/20761 , B01D2255/91 , Y02T10/22
摘要： A catalyst for purifying exhaust gases which aims to efficiently purify NOx in exhaust gases in oxygen-rich atmospheres whose oxygen concentrations are more than required for oxidizing CO and HC, and to attain improved NOx purifying performance after used for a long time. The catalyst includes, being arranged in an order from the upstream to the downstream of exhaust gas flow, a first catalyst 1 in which a noble metal catalyst 12 is loaded on a porous acidic support, a second catalyst 2 in which at least one kind of metal 22 selected from the group consisting of alkali metals, alkaline-earth metals, and rare earth metals is loaded on a porous support, and a third catalyst 3 in which a noble metal catalyst 32 is loaded on a porous support. Since SO2 is not adsorbed or oxidized by the first catalyst 1, SO2 is discharged downstream from the second catalyst 2 without generating sulfate. Therefore, since the NOx absorber is free from degradation even after used for a long time, the second catalyst 2 maintains high NOx adsorbing performance on the fuel-lean side, and the third catalyst 3 reduces NOx which are emitted from the second catalyst 2 on the stoichiometric point or on the fuel-rich side.
摘要翻译：一种用于净化废气的催化剂，其目的是有效地净化氧浓度超过氧化CO和HC所需氧浓度的富氧气氛中的废气中的NOx，并且在长时间使用后获得改善的NOx净化性能。催化剂包括从排气流的上游到下游的顺序排列有第一催化剂1，其中贵金属催化剂12负载在多孔酸性载体上，第二催化剂2，其中至少一种将由碱金属，碱土金属和稀土类金属组成的组中选择的金属22负载在多孔载体上，在其上添加贵金属催化剂32的第三催化剂3。由于SO 2不被第一催化剂1吸附或氧化，所以在不产生硫酸盐的情况下将SO 2从第二催化剂2的下游排出。因此，即使长时间使用NOx吸收剂也不会劣化，所以第二催化剂2在燃料贫乏侧保持高NOx吸附性能，第三催化剂3将从第二催化剂2排出的NOx还原化学计量点或富燃料侧。

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