FLUE GAS PURIFYING DEVICE
    2.
    发明申请
    FLUE GAS PURIFYING DEVICE 有权
    燃气净化装置

    公开(公告)号:US20110293483A1

    公开(公告)日:2011-12-01

    申请号:US13147109

    申请日:2010-01-27

    IPC分类号: B01D53/56

    摘要: An object of the present invention is to provide a flue gas purifying device that can efficiently decrease nitrogen oxides in flue gas. This object is solved by including: an exhaust pipe that guides flue gas discharged from a burning appliance; a urea-water injecting unit that injects urea water into the exhaust pipe; a catalytic unit arranged on a downstream side to a position where urea water is injected in a flow direction of flue gas and having a urea SCR catalyst; a first ammonia-concentration measuring unit that measures a concentration of ammonia in flue gas at a measurement position in a region where the catalytic unit is arranged; a second ammonia-concentration measuring unit arranged on a downstream side to the catalytic unit in a flow direction of the flue gas, to measure a concentration of ammonia in the flue gas having passed through the urea SCR catalyst; and a control unit that controls injection of urea water by the urea-water injecting unit based on measurement results acquired by the first and second ammonia-concentration measuring units.

    摘要翻译: 本发明的目的是提供一种能够有效地减少烟道气中的氮氧化物的烟道气净化装置。 该目的通过包括:引导从燃烧器具排出的烟道气的排气管来解决; 尿素水喷射单元,其将尿素水喷射到排气管中; 催化单元,其布置在下游侧到尿素水沿着烟道气的流动方向注入并具有尿素SCR催化剂的位置; 第一氨浓度测量单元,其测量在排列催化单元的区域中的测量位置的烟道气中的氨浓度; 第二氨浓度测量单元,其布置在烟道气流动方向上的催化单元的下游侧,以测量通过尿素SCR催化剂的烟道气中的氨浓度; 以及控制单元,其基于由所述第一和第二氨浓度测量单元获取的测量结果来控制由所述尿素水喷射单元喷射的尿素水。

    FLUE GAS PURIFYING DEVICE
    3.
    发明申请
    FLUE GAS PURIFYING DEVICE 审中-公开
    燃气净化装置

    公开(公告)号:US20120047879A1

    公开(公告)日:2012-03-01

    申请号:US13147135

    申请日:2010-01-27

    IPC分类号: F01N3/10

    摘要: A flue gas purifying device includes an exhaust pipe that guides flue gas discharged from an internal combustion engine; a catalytic unit that is arranged on a downstream side to the internal combustion engine in a flow direction of flue gas and includes a nitrogen-oxide storage-reduction catalyst that stores nitrogen oxides contained in flue gas and a support mechanism that is arranged in the exhaust pipe and supports the nitrogen-oxide storage-reduction catalyst in the exhaust pipe; a reducing-agent injecting unit that injects a reducing agent to the catalytic unit in the exhaust pipe; a concentration measuring unit that is arranged on a downstream side to the catalytic unit in the flow direction of flue gas and measures a concentration of nitrogen oxides in flue gas having passed through the nitrogen-oxide storage-reduction catalyst; and a control unit that controls whether to inject the reducing agent from the reducing-agent injecting unit based on a concentration of nitrogen oxides measured by the concentration measuring unit.

    摘要翻译: 一种烟道气净化装置,具备引导从内燃机排出的烟气的排气管, 催化单元,其布置在烟道气的流动方向的内燃机的下游侧,并且包括存储在烟道气中的氮氧化物的氮氧化物储存还原催化剂和布置在排气中的支撑机构 并在排气管中支撑氮氧化物储存还原催化剂; 还原剂注入单元,其将排气管中的催化单元注入还原剂; 浓度测量单元,其布置在烟道气流动方向上的催化单元的下游侧,并测量通过氮氧化物储存还原催化剂的烟道气中的氮氧化物的浓度; 以及控制单元,其基于由浓度测量单元测量的氮氧化物的浓度来控制是否从还原剂注入单元注入还原剂。

    METHOD AND APPARATUS FOR MEASURING DENSITY
    6.
    发明申请
    METHOD AND APPARATUS FOR MEASURING DENSITY 有权
    测量密度的方法和装置

    公开(公告)号:US20110019193A1

    公开(公告)日:2011-01-27

    申请号:US12922898

    申请日:2009-04-15

    IPC分类号: G01N15/06 G01N21/27

    摘要: Disclosed are method and apparatus for measuring density, that can simultaneously measure gaseous substance density and solid particulate material density and further can simultaneously measure the densities of a plurality of materials such as black smoke, white smoke, and water vapor in the solid particulate material in a simple and reliable manner. The method for measuring density comprises applying a laser beam having an absorption wavelength inherent in a gaseous material contained in an object to be measured, to the object to detect a light transmittance and a light absorption amount and detecting the density of gaseous materials in the object and the density of solid particulate materials in the object. The relationship between the density of a plurality of kinds of solid particulate materials including black smoke and white smoke and a laser beam attenuation level in each absorption wavelength is preset. Laser beams having a plurality of respective absorption wavelengths are applied to the gaseous substance to be measured. The attenuation levels of the applied laser beams having the plurality of absorption wavelengths are measured. The measured attenuation levels are compared with the attenuation levels calculated based on the present relationship to calculate the densities of the plurality of kinds of solid particulate materials.

    摘要翻译: 公开了用于测量密度的方法和装置,其可以同时测量气态物质密度和固体颗粒材料密度,并且还可以同时测量固体颗粒材料中多种材料如黑烟,白烟和水蒸气的密度 一种简单可靠的方式。 测量密度的方法包括将包含在待测物体中的气态材料中具有固有吸收波长的激光束施加到物体上,以检测透光率和光吸收量,并检测物体中气态物质的密度 以及物体中固体颗粒材料的密度。 预先设定包括黑烟和白烟的多种固体颗粒材料的密度与每种吸收波长中的激光束衰减水平之间的关系。 将具有多个相应吸收波长的激光束施加到待测量的气态物质上。 测量具有多个吸收波长的所施加的激光束的衰减水平。 将测量的衰减水平与基于当前关系计算的衰减水平进行比较,以计算多种固体颗粒材料的密度。