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    • 2. 发明授权
    • Catalyst for the decomposition of nitrogen oxides and a method for
denitrification using the same
    • 用于分解氮氧化物的催化剂和使用其的脱氮方法
    • US5696049A
    • 1997-12-09
    • US343490
    • 1995-02-02
    • Nobuhide IkeyamaYutaka IwanagaYuji TorikaiMasatosi Adachi
    • Nobuhide IkeyamaYutaka IwanagaYuji TorikaiMasatosi Adachi
    • B01D53/94B01D53/86B01J23/22B01J35/10B01J21/06
    • B01D53/8628B01J23/22Y02C20/10
    • The present invention aims at providing a novel NOx-decomposing catalyst and a denitrification method using the same. The feature thereof consists in an NOx-decomposing catalyst, in which vanadium oxide is supported on titanium oxide of anatase type, having a specific surface area of 100 to 250 m.sup.2 /g and micro pores of 15 to 25 .ANG. in pore diameter and 75 to 85 .ANG. in pore diameter respectively in an amount of at least 0.05 cc/g, and a method for the denitrification of a waste gas comprising contacting an NOx-containing waste gas with the above described catalyst in the presence of a reducing gas at a temperature of 100.degree. to 350.degree. C. An NOx-containing waste gas with coexistent catalyst-poisonous materials such as water, SOx, etc. can be treated in an effective manner at a relatively low temperature, e.g. 170.degree. C. or lower, at which no practical treatment can be carried out by the prior art method, without formation of N.sub.2 O as a by-product.
    • PCT No.PCT / JP94 / 00474 Sec。 371日期:1995年2月2日 102(e)日期1995年2月2日PCT 1994年3月24日PCT公布。 WO94 / 21373 PCT出版物 日期:1994年9月29日本发明旨在提供一种新型的NOx分解催化剂和使用其的脱氮方法。 其特征在于其中将氧化钒负载在锐钛矿型氧化钛上的NOx分解催化剂,比表面积为100〜250m 2 / g,微孔为15〜25nm,孔径为75〜 85 ANGSTROM孔径分别为至少0.05cc / g,以及废气脱氮的方法,包括在还原气体存在下在一定温度下使含NO x的废气与上述催化剂接触 100℃至350℃。具有共存的催化剂有毒物质如水,SOx等的含NO x废气可以在相对较低的温度下有效地处理,例如 170℃以下,不进行现有技术的实际处理,不形成N 2 O作为副产物。
    • 3. 发明授权
    • Agitating pulverizer
    • 搅拌粉碎机
    • US5577675A
    • 1996-11-26
    • US378445
    • 1995-01-25
    • Tsuyoshi Ishikawa
    • Tsuyoshi Ishikawa
    • B01F7/00B01F7/16B01F15/00B02C13/14B02C19/00
    • B01F7/00208B01F7/166B02C13/14
    • An agitating pulverizer which agitates an object and a binder charged into a tank and repeatedly granulates and pulverizes the object, thereby forming particulate matter with a desired particle size. The agitating pulverizer comprises a tank for allowing the object and the binder to be charged thereinto. A low-speed rotating member and a high-speed rotating member are provided at the central bottom portion of the tank and arranged to be rotatable in the directions opposite to each other. A lower agitating member is placed adjacent to the bottom of the tank and interconnected to the low-speed rotating member so as to push the object and the binder upward and also to draw them toward the center of the tank. An upper agitating member is interconnected to the high-speed rotating member and placed farther upward of the lower agitating member so as to push the object and the binder downward and upward, thereby applying shearing force and centrifugal force to the object. The object charged into the tank, together with the binder, is drawn toward the center of the tank while being pushed upward by the lower agitating member. The object is further agitated while being subjected to shearing force and centrifugal force by the upper agitating member, and is repeatedly granulated and pulverized, thereby forming into particulate matter with a suitable particle size.
    • 搅拌粉碎机,搅拌物体和装入罐中的粘合剂,并重复地对物体进行造粒和粉碎,从而形成具有所需粒径的颗粒物质。 搅拌式粉碎机包括用于将物体和粘合剂装入其中的罐。 在罐的中央底部设置有低速旋转构件和高速旋转构件,并且设置成可以在彼此相反的方向上旋转。 下部搅拌构件放置在与罐的底部相邻并且互连到低速旋转构件上,以将物体和粘合剂向上推动并且还将它们吸引到罐的中心。 上搅拌构件与高速旋转构件相互连接并放置在下搅拌构件的更上方,以向上和向下推动物体和装订器,从而对物体施加剪切力和离心力。 装载到罐中的物体与粘合剂一起被向下被搅动部件向上推动而朝向罐的中心。 在通过上搅拌构件承受剪切力和离心力的同时进一步搅拌物体,并且被重复造粒和粉碎,从而形成具有合适粒度的颗粒物质。
    • 8. 发明授权
    • Dry process desulfurization and denitrifcation process
    • 干法脱硫脱氮工艺
    • US5587136A
    • 1996-12-24
    • US433927
    • 1995-05-02
    • Nobuhide IkeyamaYutaka Iwanaga
    • Nobuhide IkeyamaYutaka Iwanaga
    • B01D53/60B01D53/06B01D53/08B01D53/74B01D53/86B01D53/94B01J21/06B01J23/22B01J35/10C10B21/00
    • B01J23/22B01D53/08B01D53/8628B01D2251/2062B01D2253/102B01D2253/306B01D2253/308B01D2255/20707B01D2255/20723B01D2257/206B01D2257/302B01D2257/404B01D2257/602B01D2258/0283B01J21/063B01J35/10Y02C20/10
    • The present invention provides a desulfurization and denitrification process by dry process, whereby a stable operation is rendered possible at a temperature of 100.degree. to 200.degree. C. with a high energy efficiency and without deterioration of a catalyst for a long time and any problem on by produced N.sub.2 O. This process comprises treating a waste gas containing SOx and NOx with catalyst-poisoning materials in an apparatus for mainly effecting desulfurization and then in an apparatus for mainly effecting denitrification, characterized by passing the waste gas through a desulfurization apparatus of moving bed type, in which a carbonaceous adsorbent is moved downward at a temperature of 100.degree. to 200.degree. C., adding ammonia to the waste gas at a temperature of 100.degree. to 200.degree. C., leaving the desulfurization apparatus, and then passing the waste gas through the low temperature denitrification apparatus, in which a catalyst of TiO.sub.2 -V.sub.2 O.sub.5 type comprising vanadium oxide supported on titanium oxide of anatase type, having a specific surface area of 100 to 250 m.sup.2 /g and micropores of 1.5 to 2.5 nm in pore diameter and 7.5 to 8.5 nm in pore diameter respectively in an amount of at least 0.05 cc/g, is filled, at a temperature of 100.degree. to 200.degree. C., thus effecting the denitrification.
    • 本发明通过干法提供脱硫脱氮方法,能够在100℃〜200℃的温度下以高能量效率进行稳定的操作,并且长时间不会导致催化剂劣化, 通过生产N2O。 该方法包括在主要进行脱硫的装置中,用催化剂中毒材料处理含有SOx和NOx的废气,然后在主要进行脱氮的装置中,其特征在于使废气通过移动床式脱硫装置,其中 碳质吸附剂在100〜200℃的温度下向下移动,在100〜200℃的温度下向废气中加入氨,留下脱硫装置,然后使废气通过低温 其中包含负载在锐钛矿型氧化钛上的氧化钒的TiO2-V2O5型催化剂,比表面积为100〜250m 2 / g,孔径为1.5〜2.5nm,微孔为7.5〜8.5 在100〜200℃的温度下填充孔径分别为至少0.05cc / g的孔径,从而进行脱氮。