公开(公告)号：US08765066B2

公开(公告)日：2014-07-01

申请号：US13895211

申请日：2013-05-15

申请人： Taiheiyo Cement Corporation ,  Nippon Shokubai Co., Ltd.

发明人： Shinichiro Saito ,  Yasuhiro Uchiyama ,  Junichi Terasaki ,  Hisashi Kondo ,  Mitsuharu Hagi ,  Shinyuki Masaki

IPC分类号： B01D53/56 ,  B01D53/75 ,  B01D53/86

CPC分类号： B01D53/86 ,  B01D53/8625 ,  B01D53/864 ,  B01D53/8668 ,  B01D2255/10 ,  B01D2255/20707 ,  B01D2255/20723 ,  C04B7/436 ,  F27B7/2033 ,  F27D17/008 ,  Y02A50/235 ,  C04B7/364

摘要： A combustion exhaust gas processing device comprises: a dust collector collecting dust in a cement kiln combustion exhaust gas; a wet dust collector using sodium hypochlorite as a catalyst-poisoning-substance stripper for removing a catalyst-poisoning substance and mercury from a combustion exhaust gas which passed the dust collector; heaters downstream of the wet dust collector for heating the combustion exhaust gas from the wet dust collector; and a catalyst device from which NOx, a persistent organic pollutant, etc. in the heated combustion exhaust gas, are removed. An upstream side of the catalyst device is installed with an oxide catalyst such as titanium-vanadium and a downstream side is installed with a platinum catalyst as a noble-metal catalyst. The temperature of the combustion exhaust gas after the wet dust collector is increased up to 140° C. or more with the heaters to prevent decline in denitration efficiency of and the decomposition efficiency of a volatile organic compound. A mercury adsorbing tower is provided for adsorbing the mercury in liquid exhausted from the wet dust collector and wastewater from the liquid is used to generate sodium hypochlorite for use in the wet dust collector.

摘要翻译： 一种燃烧废气处理装置，包括：集尘器，收集水泥窑燃烧废气中的灰尘; 使用次氯酸钠作为催化剂中毒物质汽提器的湿式集尘器，用于从通过集尘器的燃烧废气中除去催化剂中毒物质和汞; 湿式除尘器下游的加热器，用于加热来自湿式除尘器的燃烧废气; 并且除去加热的燃烧废气中的NOx，持久性有机污染物等的催化剂装置。 催化剂装置的上游侧装有钛钒等氧化物催化剂，下游侧装有铂催化剂作为贵金属催化剂。 湿式集尘器后的燃烧废气的温度与加热器一起升高至140℃以上，以防止脱硝效率降低和挥发性有机化合物的分解效率。 提供汞吸附塔，用于吸附从湿式除尘器排出的液体中的汞，来自液体的废水用于产生用于湿式集尘器的次氯酸钠。

公开(公告)号：US20130251599A1

公开(公告)日：2013-09-26

申请号：US13895211

申请日：2013-05-15

申请人： Nippon Shokubai Co., Ltd. ,  Taiheiyo Cement Corporation

发明人： Shinichiro Saito ,  Yasuhiro Uchiyama ,  Junichi Terasaki ,  Hisashi Kondo ,  Mitsuharu Hagi ,  Shinyuki Masaki

IPC分类号： B01D53/86

CPC分类号： B01D53/86 ,  B01D53/8625 ,  B01D53/864 ,  B01D53/8668 ,  B01D2255/10 ,  B01D2255/20707 ,  B01D2255/20723 ,  C04B7/436 ,  F27B7/2033 ,  F27D17/008 ,  Y02A50/235 ,  C04B7/364

摘要： A combustion exhaust gas processing device comprises: a dust collector collecting dust in a cement kiln combustion exhaust gas; a wet dust collector as a catalyst-poisoning-substance stripper removing a catalyst-poisoning substance from a combustion exhaust gas which passed the dust collector, preheaters heating beforehand a combustion exhaust gas which passed the wet dust collector; and a catalyst device from which NOx, a persistent organic pollutant, etc. in the preheated combustion exhaust gas, are removed. A titanium-vanadium catalyst etc. as an oxide catalyst is used upstream of the catalyst device, and a platinum catalyst etc. as a noble-metal catalyst downstream of the catalyst device. The temperature of the combustion exhaust gas after the catalyst-poisoning substance is removed is increased up to 140° C. or more with the preheaters to prevent decline in denitration efficiency of and the decomposition efficiency of a volatile organic compound.

摘要翻译： 一种燃烧废气处理装置，包括：集尘器，收集水泥窑燃烧废气中的灰尘; 作为催化剂中毒物质汽提器的湿式集尘器，从通过集尘器的燃烧废气中除去催化剂中毒物质，预热器事先加热通过湿式除尘器的燃烧废气; 并且除去预热的燃烧废气中的NOx，持久性有机污染物等的催化剂装置。 在催化剂装置的上游使用作为氧化物催化剂的钛钒催化剂等，在催化剂装置的下游使用铂催化剂等作为贵金属催化剂。 除去催化剂中毒物质后的燃烧废气的温度通过预热器升高至140℃以上，以防止挥发性有机化合物的脱硝效率降低和分解效率降低。