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公开(公告)号:US5601792A
公开(公告)日:1997-02-11
申请号:US419158
申请日:1995-04-10
申请人: Hans T. Hug , Axel Hartenstein , Michael Hug
发明人: Hans T. Hug , Axel Hartenstein , Michael Hug
IPC分类号: B01D53/56 , B01D53/34 , B01D53/86 , B01D53/88 , B01D53/94 , B05B7/06 , F01N3/20 , F01N13/02 , F02B1/04 , F02B75/02 , B01D50/00
CPC分类号: F01N3/208 , B01D53/885 , B01D53/9431 , B01D53/944 , B01D53/9459 , B01D53/9495 , F01N13/0093 , F01N13/0097 , F01N3/2066 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/20707 , B01D2255/20723 , B01D2255/20776 , B01D53/9472 , B05B7/066 , F01N2610/02 , F01N2610/08 , F01N2610/11 , F01N2610/1453 , F01N2610/146 , F01N2610/1493 , F01N2900/1811 , F01N2900/1814 , F02B1/04 , F02B2075/027 , Y02T10/24
摘要: An exhaust gas cleaning system includes a pyrolysation channel, a mixing channel downstream of the pyrolysation channel and a reaction channel downstream of the mixing channel. An atomizing nozzle is provided for injecting into the pyrolysation channel an atomized mixture of compressed air and a dilute urea solution. The compressed air and dilute urea solution contacts the exhaust gas stream in the pyrolysation channel wherein the urea decomposes into ammonium and carbon dioxide. Mixers are provided in the mixing channel for forming a homogeneous mixture of the ammonium and carbon dioxide with the exhaust gas. The reaction channel downstream of the mixing channel is provided with at least two catalysts for contacting the homogeneous mixture and removing effluents therefrom.
摘要翻译: 废气净化系统包括热解通道,热解通道下游的混合通道和混合通道下游的反应通道。 提供雾化喷嘴,用于将压缩空气和稀释尿素溶液的雾化混合物注入热解通道。 压缩空气和稀释的尿素溶液接触热解通道中的废气流,其中尿素分解成铵和二氧化碳。 混合器设置在混合通道中,用于形成铵和二氧化碳的均匀混合物与废气。 混合通道下游的反应通道设置有至少两种催化剂,用于使均匀混合物接触并从中除去流出物。
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公开(公告)号:US5431893A
公开(公告)日:1995-07-11
申请号:US20041
申请日:1993-02-19
申请人: Hans T. Hug , Axel Hartenstein , Michael Hug
发明人: Hans T. Hug , Axel Hartenstein , Michael Hug
IPC分类号: B01D53/56 , B01D53/34 , B01D53/86 , B01D53/88 , B01D53/94 , B05B7/06 , F01N3/20 , F01N13/02 , F02B1/04 , F02B75/02 , B01J8/00 , C01B21/00
CPC分类号: F01N3/208 , B01D53/885 , B01D53/9431 , B01D53/944 , B01D53/9459 , B01D53/9495 , F01N13/0093 , F01N13/0097 , F01N3/2066 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/20707 , B01D2255/20723 , B01D2255/20776 , B01D53/9472 , B05B7/066 , F01N2610/02 , F01N2610/08 , F01N2610/11 , F01N2610/1453 , F01N2610/146 , F01N2610/1493 , F01N2900/1811 , F01N2900/1814 , F02B1/04 , F02B2075/027 , Y02T10/24
摘要: In a process for cleaning the exhaust gases from combustion installations, a dilute urea solution prepared in a reagent tank (20) is introduced into the hot exhaust gas flow (30) of differing concentrations and is finely sprayed in the direction of the exhaust gas flow. After decomposition of the urea in a pyrolysation channel (14), the exhaust gas flow (30) is homogeneously mixed in-line by a mixer located in a mixing channel (16). In a subsequent in-line reaction channel (18), the reducible exhaust gas constituents are converted into non-toxic gases in at least one selective reduction catalyst which does not contain zeolite (36), then, dependent on the installation, the oxidizable exhaust gas components are converted into non-toxic gases without reagent in at least one oxidation catalyst (38) to produce a virtually complete reaction. A dual substance nozzle appliance (26) opening into the pyrolysation channel (14) comprises a reversing valve (88) for the working and blowing out position, a casing tube (24) for the compressed air, located in the area of the exhaust gas flow ( 30), a urea conductor carried at a distance in the casing tube (24) and a nozzle for fine spraying of the dilute urea solution.
摘要翻译: 在从燃烧装置中清除废气的过程中,将制备在试剂罐(20)中的稀释尿素溶液引入到不同浓度的热废气流(30)中,并沿排气流的方向 。 在热解通道(14)中尿素分解之后,废气流(30)通过位于混合通道(16)中的混合器在线均匀混合。 在随后的在线反应通道(18)中,可还原废气组分在至少一种不含沸石(36)的选择性还原催化剂中转化为无毒气体,然后根据安装,可氧化废气 在至少一种氧化催化剂(38)中,气体组分被转化成无毒气体,没有试剂以产生几乎完全的反应。 通入热解通道(14)的双重物质喷嘴装置(26)包括用于工作和吹出位置的换向阀(88),用于压缩空气的套管(24)位于废气区域 流动(30),在套管(24)中承载一段距离的尿素导体和用于稀释尿素溶液的喷嘴的喷嘴。
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