4.
    发明专利
    未知

    公开(公告)号:DE69313817T2

    公开(公告)日:1998-02-12

    申请号:DE69313817

    申请日:1993-11-18

    Applicant: CORNING INC

    Abstract: A batch, which fires to yield ceramic cordierite as the principal phase, consists of (i) a mineral component comprising clay and talc, and (ii) 5-50 wt.% of a chemical component comprising powdered oxides, hydroxides and hydrous oxides of Mg, Al and Si. The chemical component pref. comprises Mg, Al and Si oxide cpds. in a proportion to yield cordierite as a principal phase. The batch yields at least 94% cordierite on firing and has an overall compsn. of 47-53% SiO2, 33-41% Al2O3 and 11-17% MgO and the chemical component is 25-40 wt.% of the batch, or the overall compsn. of the batch is 41-56.5% SiO2, 30-50% Al2O3 and 9-20% MgO. Clay and talc are the sole sources of SiO2 and MgO in the mineral component.

    6.
    发明专利
    未知

    公开(公告)号:BR0110263A

    公开(公告)日:2003-03-05

    申请号:BR0110263

    申请日:2001-05-10

    Applicant: CORNING INC

    Abstract: A ceramic comprising predominately a cordierite-type phase approximating the stoichiometry Mg 2 Al 4 Si 5 O 18 and having a coefficient of thermal expansion (25-800° C.) of greater than 4x10 -7 /° C. and less than 13x10 -7 /° C. and a permeability and a pore size distribution which satisfy the relation 2.108 (permeability)+18.511 (total pore volume)+0.1863 (percentage of total pore volume comprised of pores between 4 and 40 micrometers)>24.6. The ceramic is suitable in the fabrication of cellular, wall-flow, diesel particulate filters having a pressure drop in kPa that at an artificial carbon soot loading of 5 grams/liter and a flow rate of 26 scfm is less than 8.9-0.035 (number of cells per square inch)+300 (cell wall thickness in inches), a bulk filter density of at least 0.60 g/cm 3 and a volumetric heat capacity of at least 0.67 J cm -3 K -1 as measured at 500° C.

    7.
    发明专利
    未知

    公开(公告)号:DE69313817D1

    公开(公告)日:1997-10-16

    申请号:DE69313817

    申请日:1993-11-18

    Applicant: CORNING INC

    Abstract: A batch, which fires to yield ceramic cordierite as the principal phase, consists of (i) a mineral component comprising clay and talc, and (ii) 5-50 wt.% of a chemical component comprising powdered oxides, hydroxides and hydrous oxides of Mg, Al and Si. The chemical component pref. comprises Mg, Al and Si oxide cpds. in a proportion to yield cordierite as a principal phase. The batch yields at least 94% cordierite on firing and has an overall compsn. of 47-53% SiO2, 33-41% Al2O3 and 11-17% MgO and the chemical component is 25-40 wt.% of the batch, or the overall compsn. of the batch is 41-56.5% SiO2, 30-50% Al2O3 and 9-20% MgO. Clay and talc are the sole sources of SiO2 and MgO in the mineral component.

    Apparatus and method for removing voc's from an exhaust gas stream
    9.
    发明公开
    Apparatus and method for removing voc's from an exhaust gas stream 失效
    装置和方法的废气中除去挥发性有机化合物

    公开(公告)号:EP0780150A3

    公开(公告)日:1998-06-17

    申请号:EP96119952

    申请日:1996-12-12

    Applicant: CORNING INC

    Abstract: The instant invention is directed at an apparatus for removing VOC's from an exhaust gas stream comprised of the following: a heatable adsorber located in the exhaust stream capable of desorption; and, an oxidizer structure having a lightoff temperature and located in the exhaust stream downstream from the adsorber structure. One particular embodiment of the apparatus comprises the following two elements: (1) a resistively heatable adsorber possessing an activated carbon phase located in the exhaust stream and having a desorption temperature; and, (2) an electrically heatable catalyst structure having a lightoff temperature and located in the exhaust stream downstream from the adsorber structure. The method enabled as a result of the development of the aforementioned apparatus, i.e., a method for removing VOC's from an exhaust stream, involves two essential steps: (1) causing exhaust gases from an exhaust gas stream to flow through an adsorber structure and an oxidizer while adsorbing an amount of VOC's; and, (2) heating the oxidizer to its lightoff temperature and desorbing the adsorbed VOC's and thereafter flowing the desorbed compounds through the oxidizer whereupon they are oxidized. One particular embodiment involves two essential steps: (1) flowing VOC-containing exhaust gases through an adsorber structure having an activated carbon phase and an electrically heatable catalyzed structure while adsorbing an amount of VOC's; and, (2) heating the catalyzed structure to its lightoff temperature, desorbing the adsorbed VOC's and thereafter flowing the desorbed compounds through the catalyzed structure whereupon the desorbed VOC's are oxidized.

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