Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control
    31.
    发明授权
    Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control 失效
    用于选择性催化还原氮氧化物用于发电厂排放控制的优质柱状粘土催化剂

    公开(公告)号:US06521559B1

    公开(公告)日:2003-02-18

    申请号:US09580382

    申请日:2000-05-26

    IPC分类号: B01J2116

    摘要: The present invention provides a catalyst for selective catalytic reduction of nitrogen oxide compounds with ammonia comprising a composition of one or more pillared interlayered clays, one or more metal ions exchanged with the pillared interlayered clays, and one or more promoter ions exchanged with the pillared interlayered clays. Specifically, the pillared interlayered clay (PILC) catalysts of the present invention include Fe3+, Cr3+, Mn2+, Co2+, Cu2+, and Ni2+ exchanged Al2O3-PILC, TiO2-PILC, ZrO2-PILC or SiO2-PILC catalysts. The promoters include Ce, La, Pr, Th and Nd. These pillared clay catalysts of the present invention show remarkable activity for the SCR reaction.

    摘要翻译: 本发明提供了一种用氨选择性催化还原氮氧化合物的催化剂,包括一个或多个柱状夹层粘土的组合物,一个或多个金属离子与柱状夹层粘土交换的一种或多种金属离子,以及与柱状夹层交换的一种或多种促进剂离子 粘土 具体来说,本发明的柱状层间粘土(PILC)催化剂包括Fe3 +,Cr3 +,Mn2 +,Co2 +,Cu2 +和Ni2 +交换的Al2O3-PILC,TiO2-PILC,ZrO2-PILC或SiO2-PILC催化剂。 助催化剂包括Ce,La,Pr,Th和Nd。 本发明的这些柱状粘土催化剂对SCR反应显示出显着的活性。

    Nitrogen oxide decomposition
    33.
    发明授权
    Nitrogen oxide decomposition 失效
    氮氧化物分解

    公开(公告)号:US5456892A

    公开(公告)日:1995-10-10

    申请号:US222462

    申请日:1994-04-01

    摘要: Methods of reducing NO.sub.x to nitrogen without using a reducing gas. The NO.sub.x is absorbed in a heteropoly compound to concentrate it and then heated to reverse the fixation reaction(s) and decompose the NO.sub.x into nitrogen.

    摘要翻译: 不使用还原气体将NOx还原成氮的方法。 将NOx吸收在杂多化合物中以浓缩,然后加热以逆转固定反应并将NOx分解成氮气。

    Preparation of reactive beta-dicalcium silicate
    34.
    发明授权
    Preparation of reactive beta-dicalcium silicate 失效
    反应性β-二硅酸钙的制备

    公开(公告)号:US4314980A

    公开(公告)日:1982-02-09

    申请号:US125406

    申请日:1980-02-28

    IPC分类号: C01B33/24

    CPC分类号: C01B33/24

    摘要: This invention relates to the preparation of fine particles of reactive beta-dicalcium silicate by means of a solid state process which comprises firing a mixture of calcium sulfate, silica and a reducing additive selected from the group consisting of calcium sulfide, carbon, carbon monoxide, methane and hydrogen, at a temperature of about 850.degree.-1000.degree. C. A carrier gas such as nitrogen or carbon dioxide may also be added, if desired. A high concentration of sulfur dioxide is a by-product of this process.

    摘要翻译: 本发明涉及通过固态方法制备反应性β-二硅酸二钙细颗粒,其包括硫酸钙,二氧化硅和还原添加剂的混合物的烧制,所述还原添加剂选自硫化钙,碳,一氧化碳, 甲烷和氢气,在约850℃-1000℃的温度下。如果需要,也可以加入载气如氮气或二氧化碳。 高浓度的二氧化硫是这个过程的副产品。

    Mechanochemical hydrogenation of coal
    35.
    发明授权
    Mechanochemical hydrogenation of coal 失效
    煤的机械化学氢化

    公开(公告)号:US4250015A

    公开(公告)日:1981-02-10

    申请号:US970841

    申请日:1978-12-18

    CPC分类号: C10G1/083

    摘要: Hydrogenation of coal is improved through the use of a mechanical force to reduce the size of the particulate coal simultaneously with the introduction of gaseous hydrogen, or other hydrogen donor composition. Such hydrogen in the presence of elemental tin during this one-step size reduction-hydrogenation further improves the yield of the liquid hydrocarbon product.

    摘要翻译: 通过使用机械力,通过引入气态氢或其它氢供体组合物同时减小颗粒状煤的尺寸,煤的氢化得到改善。 在一步尺寸还原氢化期间,元素锡存在下的这种氢气进一步提高了液态烃产物的产率。

    Regeneration of lime from sulfates for fluidized-bed combustion
    36.
    发明授权
    Regeneration of lime from sulfates for fluidized-bed combustion 失效
    用于流化床燃烧的硫酸盐再生石灰

    公开(公告)号:US4197285A

    公开(公告)日:1980-04-08

    申请号:US858221

    申请日:1977-12-07

    摘要: In a fluidized-bed combustor the evolving sulfur oxides are reacted with CaO to form calcium sulfate which is then decomposed in the presence of carbonaceous material, such as the fly ash recovered from the combustion, at temperatures of about 900.degree. to 1000.degree. C., to regenerate lime. The regenerated lime is then recycled to the fluidized bed combustor to further react with the evolving sulfur oxides. The lime regenerated in this manner is quite effective in removing the sulfur oxides.

    摘要翻译: 在流化床燃烧器中,放出的硫氧化物与CaO反应形成硫酸钙,然后在碳质材料(例如从燃烧中回收的飞灰)的存在下,在约900-1000℃的温度下分解。 ,以再生石灰。 然后将再生的石灰再循环到流化床燃烧器中以进一步与放出的硫氧化物反应。 以这种方式再生的石灰在除去硫氧化物方面是非常有效的。