-
公开(公告)号：US5234877A
公开(公告)日：1993-08-10
申请号：US986509
申请日：1992-12-07
CPC分类号： B01J20/12 , B01D53/508 , C01B33/44
摘要： A method for preparing and using compositions including a smectite clay and a base or base precursor which reacts with SO.sub.x in a hot flue gas is described. The base or base precursor is preferably the dispersed phase in the bulk phase of the clay. The compositions are heated to form the base which reacts with SO.sub.x in the flue gas.
摘要翻译： 描述了一种制备和使用包含蒙脱石粘土和在热烟道气中与SOx反应的碱或前体的组合物的方法。 碱或碱前体优选是在粘土的本体相中的分散相。 将组合物加热以形成与烟道气中的SO x反应的碱。
-
公开(公告)号：US5079203A
公开(公告)日：1992-01-07
申请号：US528763
申请日：1990-05-25
CPC分类号： B01D53/864 , B01J20/12 , B01J23/007 , B01J29/049 , C01B13/14 , C01B13/145 , C01F7/00 , C01F7/002 , C01G9/006 , C01P2002/22 , C01P2002/72 , C01P2002/78
摘要： This disclosure describes the synthesis of layered double hydroxide compositions interlayered by polyoxometalate anions with Keggin-type structures and having the formula [M.sub.1-x.sup.ll M.sub.x.sup.lll (OH).sub.2 ]A.sub.x/n.sup.n-.yH.sub.2 O, wherein, M.sup.ll is a divalent metal and M.sup.lll is a trivalent metal, A is an anionic polyoxometalate of negative charge n, x range between 0.12 to 0.8, and y is a positive number. The products exhibit well-defined XRD peaks corresponding to uniformly crystalline layered products with basal spacing values.gtoreq.14 .ANG..
摘要翻译： 本公开描述了由具有Keggin型结构并具有式[M1-x11Mx111（OH）2] Ax / nn.yH2O的多金属氧酸盐阴离子层合的层状双氢氧化物组合物的合成，其中M11是二价金属，M11是 三价金属，A是负电荷n的阴离子多金属氧酸盐，x在0.12至0.8之间，y是正数。 产物表现出对应于均匀结晶层状产物的明确定义的XRD峰，基础间距值> = 14 ANGSTROM。
-
3.发明授权Method for the preparation of highly reactive clay composites for the removal of sox from flue gas streams 失效制备高反应性粘土复合材料用于从烟道气流中去除黄土的方法
公开(公告)号：US5520898A
公开(公告)日：1996-05-28
申请号：US183039
申请日：1994-01-18
IPC分类号： B01D53/50 , B01J20/12 , B01J21/16 , B01J37/02 , B01J37/03 , C01B33/44 , B01J8/00 , B01J20/02 , C01B17/78
CPC分类号： C01B33/44 , B01D53/508 , B01J20/12 , B01J21/16 , B01J37/0207 , B01J37/031
摘要： The use of base/clay composites materials as sorbents for the removal of SO.sub.2 and SO.sub.3 (SO.sub.x) from flue gas and other sulfur containing gas streams is described. The base is either an alkaline earth metal carbonate (eg. CaCO.sub.3) or hydroxide (eg. Ca(OH).sub.2) is incorporated onto the clay by precipitating from corresponding metal oxide (eg. CaO) in an aqueous clay slurry. A second metal oxide or oxide precursor, preferably selected from transition metal ions, capable of promoting the oxidation of sulfur dioxide to sulfur trioxide, is incorporated to the base/clay composite during the synthesis in the form of finely divided metal oxide powder, metal oxide sol, water soluble metal salt or as clay-intercalated metal cation. The use of clay as dispersing agent for both the basic oxide and the second metal oxide component decreases the particle agglomeration of base particles and increases the rate of SO.sub.x uptake compared to the bulk bases in current use.
摘要翻译： 描述了使用碱/粘土复合材料作为吸附剂从烟气和其它含硫气流中除去SO 2和SO 3（SO x）的物质。 碱是碱土金属碳酸盐（例如CaCO 3）或氢氧化物（例如Ca（OH）2）通过在水性粘土浆中从相应的金属氧化物（例如CaO）中沉淀而掺入到粘土上。 能够促进二氧化硫氧化成三氧化硫的第二金属氧化物或氧化物前体，优选选自过渡金属离子，在合成过程中以细分散的金属氧化物粉末，金属氧化物 溶胶，水溶性金属盐或粘土插层金属阳离子。 使用粘土作为碱性氧化物和第二金属氧化物组分的分散剂降低了基础颗粒的颗粒聚集并且增加了当前使用的与本体碱基相比的SO x吸收速率。
-
4.发明授权Process of using layered double hydroxides as low temperature recyclable sorbents for the removal of SO.sub.x from flue gas and other gas streams 失效使用层状双氢氧化物作为低温可循环吸附剂从烟气和其他气流中除去SOx的方法
公开(公告)号：US5358701A
公开(公告)日：1994-10-25
申请号：US976543
申请日：1992-11-16
CPC分类号： C01B17/60 , B01D53/508 , B01J20/041 , B01J20/08 , B01J20/3433 , B01J20/3483 , C01P2002/22
摘要： A process for removing noxious sulfur oxides, nitrous oxides, and chlorine from gas streams, particularly from flue gases of coal-burning power plants, using layered double hydroxide (LDH) sorbents are described. The sorbents are particularly useful for SO.sub.2 absorption at temperatures in the range 100 to less than 400.degree. C. The SO.sub.2 gas absorbs into the hydrotalcite structure as SO.sub.3.sup.2- anions by replacing most of the gallery CO.sub.3.sup.2- anions. The adsorbed SO.sub.2 is driven-off by calcination at elevated temperatures (500.degree. C.) and the LDH sorbents are regenerated by hydrolyzing the calcined product optionally in the presence of CO.sub.2 or CO.sub.3.sup.2-.
摘要翻译： 描述了使用层状双氢氧化物（LDH）吸附剂从燃气流，特别是燃煤发电厂的烟道气中除去有害硫氧化物，一氧化二氮和氯的方法。 吸附剂在100至小于400℃的温度下对SO2吸收特别有用。SO2气体通过替代大部分的CO32-阴离子而吸收到作为SO32-阴离子的水滑石结构中。 吸附的SO2通过在高温（500℃）下煅烧而被驱除，并且通过在CO 2或CO 2 2-存在下水解煅烧产物来再生LDH吸附剂。
-
5.发明授权Layered double hydroxide sorbents for the removal of SO.sub.x from flue gas and other gas streams 失效层状双氢氧化物吸附剂用于从烟道气和其他气流中除去SOx
公开(公告)号：US5114898A
公开(公告)日：1992-05-19
申请号：US589424
申请日：1990-09-28
CPC分类号： B01D53/508 , B01J20/06 , C01F7/002 , C01G1/00 , C01G49/009 , C01P2002/22 , C01P2002/78
摘要： Processes for removing noxious sulfur oxides from gas streams, particularly from flue gases of coal-burning power plants, using heated layered double hydroxide (LDH) sorbents are described. The sorbent compositions contain metal components, incorporated into the sorbents either by isomorphous replacement of all or part of M.sup.II and/or M.sup.III ions in layers of LDH structures or by impregnation as a metal salt, to promote the oxidation of sulfur dioxide.
摘要翻译： 描述了使用加热的层状双氢氧化物（LDH）吸附剂从燃气流，特别是燃煤发电厂的烟道气中除去有毒硫氧化物的方法。 吸附剂组合物含有金属组分，其通过在LDH结构层中的全部或部分MII和/或MIII离子的同晶取代或通过浸渍作为金属盐同时置换到吸附剂中，以促进二氧化硫的氧化。
-
6.发明授权Layered double hydroxide sorbents for the removal of SO.sub.x from flue gas resulting from coal combustion 失效用于从煤炭燃烧中排出的烟气中去除SOX的层状双氢氧化物分子
公开(公告)号：US5116587A
公开(公告)日：1992-05-26
申请号：US466984
申请日：1990-01-18
CPC分类号： B01D53/508 , B01J20/06 , C01F7/002 , C01G1/00 , C01G49/009 , C01P2002/22 , C01P2002/78
摘要： Processes for removing noxious oxides from gas streams, particularly from flue gases of coal-burning power plants, using heated layered double hydroxide (LDH) sorbents are described. The sorbent compositions contain metal components, incorporated into the sorbents either by isomorphous replacement of all or part of M.sup.II and /or M.sup.III ions in layers of LDH structures or by impregnation as a metal salt, to promote the oxidation of sulfur dioxide.
摘要翻译： 描述了使用加热的层状双氢氧化物（LDH）吸附剂从燃气流，特别是燃煤发电厂的烟道气中除去有害氧化物的方法。 吸附剂组合物含有金属组分，其通过在LDH结构层中的全部或部分MII和/或MIII离子的同晶取代或通过浸渍作为金属盐同时置换到吸附剂中，以促进二氧化硫的氧化。
-
7.发明授权Process using recyclable sorbents for the removal of sox from flue gases and other gas streams 失效使用可回收的吸附剂从烟道气和其他气体流中除去黄油的方法
公开(公告)号：US5785938A
公开(公告)日：1998-07-28
申请号：US691424
申请日：1996-08-02
CPC分类号： B01J20/06 , B01D53/508 , C01B17/78
摘要： A process for removing and then capturing noxious sulfur oxides from gas streams, particularly from the flue gases of coal-burning power plants, using Ni-containing heated layered double hydroxide (LDH) as recyclable sorbents. The sorbent compositions contain metal components that form stable metal sulfites and sulfates at one temperature, but are decomposed at a higher temperature to regenerate the sorbent material.
摘要翻译： 使用含Ni加热的层状双氢氧化物（LDH）作为可回收的吸附剂，从煤气流，特别是燃煤发电厂的废气中除去并随后捕集有毒硫氧化物的方法。 吸附剂组合物包含在一个温度下形成稳定的金属亚硫酸盐和硫酸盐的金属组分，但在较高温度下分解以再生吸附剂材料。
-
公开(公告)号：US5219536A
公开(公告)日：1993-06-15
申请号：US553254
申请日：1990-07-16
IPC分类号： B01J20/04 , B01D53/50 , B01D53/56 , B01D53/81 , B01J20/12 , B01J21/16 , B01J37/02 , B01J37/03 , C01B33/44
CPC分类号： B01J21/16 , B01D53/508 , B01J20/12 , B01J37/0207 , B01J37/031 , C01B33/44
摘要： A method for preparing and using compositions including a smectite clay and a base or base precursor which reacts with SO.sub.x in a hot flue gas is described. The base or base precursor is preferably the dispersed phase in the bulk phase of the clay. The compositions are heated to form the base which reacts with SO.sub.x in the flue gas.
摘要翻译： 描述了一种制备和使用包含蒙脱石粘土和在热烟道气中与SOx反应的碱或前体的组合物的方法。 碱或碱前体优选是在粘土的本体相中的分散相。 将组合物加热以形成与烟道气中的SO x反应的碱。
-
公开(公告)号：US5160715A
公开(公告)日：1992-11-03
申请号：US779645
申请日：1991-10-21
CPC分类号： C01B33/44 , B01D53/508 , B01J20/12
摘要： A method for preparing smectite clay alkaline earth metal hydroxide and carbonate composite materials is described. The method uses low amounts of the clay added to water to which is added calcium oxide or calcium hydroxide. Optionally the calcium carbonate is formed in situ by exposure to air or to carbon dioxide in the solution. The product is dried to form the composite material which is used to remove SO.sub.x from flue gases.
摘要翻译： 描述了一种制备蒙脱石粘土碱土金属氢氧化物和碳酸盐复合材料的方法。 该方法使用少量添加到水中的粘土，其中加入氧化钙或氢氧化钙。 任选地，碳酸钙通过暴露于空气或溶液中的二氧化碳就地形成。 将产物干燥以形成用于从烟道气中除去SO x的复合材料。
-
公开(公告)号：US5126300A
公开(公告)日：1992-06-30
申请号：US719987
申请日：1991-06-24
IPC分类号： B01J20/04 , B01D53/50 , B01D53/56 , B01D53/81 , B01J20/12 , B01J21/16 , B01J37/02 , B01J37/03 , C01B33/44
CPC分类号： B01J21/16 , B01D53/508 , B01J20/12 , B01J37/0207 , B01J37/031 , C01B33/44
摘要： A method for preparing smectite clay alkaline earth metal hydroxide and carbonate composite materials is described. The method uses low amounts of the clay added to water to which is added calcium oxide or calcium hydroxide. Optionally the calcium carbonate is formed in situ by exposure to air or to carbon dioxide in the solution. The product is dried to form the composite material which is used to remove SO.sub.x from flue gases.
摘要翻译： 描述了一种制备蒙脱石粘土碱土金属氢氧化物和碳酸盐复合材料的方法。 该方法使用少量加入到加入氧化钙或氢氧化钙的水中的粘土。 任选地，碳酸钙通过暴露于空气或溶液中的二氧化碳就地形成。 将产物干燥以形成用于从烟道气中除去SO x的复合材料。
-
-
-
-
-
-
-
-
-
搜索结果
22 条记录 (耗时 0.017 秒)