公开(公告)号：JP2001314818A

公开(公告)日：2001-11-13

申请号：JP2001085513

申请日：2001-03-23

Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG

Inventor： KEISLING RALF ,  PIROTH JOSEF

IPC: F01N3/10 ,  B01D53/86 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B05D7/22 ,  B05D7/24 ,  C04B41/45 ,  C04B41/81

Abstract: PROBLEM TO BE SOLVED: To enable using of a coating suspension having a high solid substance content and make the position of a coated edge part inside a passage highly reproducible, sufficiently irrespectively of the cell density of a carrier. SOLUTION: The carrier is loaded starting with the lower end face by the filled volume of the coating suspension which is measured so that the carrier is loaded only upto the previously prescribed height of a part of the length L of the carrier. Thus the excess coating suspension is removed downward and a desired coating amount of the suspension is made to remain in the carrier.

公开(公告)号：JP2001187335A

公开(公告)日：2001-07-10

申请号：JP2000346968

申请日：2000-11-14

Applicant: DEGUSSA

Inventor： GOEBEL ULRICH ,  RUWISCH LUTZ MARC ,  KEISLING RALF ,  FOERSTER MARTIN DR

IPC: B01D53/94 ,  B01J20/06 ,  B01J20/30 ,  B01J23/00 ,  B01J23/02 ,  B01J23/10 ,  B01J23/40 ,  B01J23/63 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08

Abstract: PROBLEM TO BE SOLVED: To provide a method of producing a nitrogen oxide-occluding material and the nitrogen oxide-occluding material obtained by the same. SOLUTION: The nitrogen oxide-occluding material is constituted of a carrier material selected from the group of a doped cerium oxide, cerium/zircon-mixed oxides and aluminum oxide or mixtures thereof and at least one particulate occluding component of oxides, carbonates or hydroxides of elements of magnesium, strontium, barium, lanthanum and cerium, each being loaded on the carrier material. The method of producing the nitrogen oxide-occluding material comprises suspending a carrier material in an aqueous solution containing a precursor of an occluding component, then introducing the suspension into a hot gas flow and controlling the distribution of the temperature of the hot gas flow so that a solvent of the suspension is allowed to evaporate for a residence time shorter than 1 min in the hot gas flow, the precursor of the occluding component is decomposed by heat and converted into the occluding component, and the occluding material thus formed is separated from the hot gas flow.

公开(公告)号：JP2000061288A

公开(公告)日：2000-02-29

申请号：JP13021399

申请日：1999-05-11

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN DR ,  GUTSCH ANDREAS DR ,  DOMESLE RAINER DR ,  KEISLING RALF ,  STOEHR OLIVER

IPC: B01J2/00 ,  B01J2/04 ,  B01J19/08 ,  B01J19/12 ,  B01J20/02 ,  B01J20/30 ,  B01J32/00 ,  B01J37/00 ,  C01B13/34 ,  C03B19/00 ,  C04B35/622

Abstract: PROBLEM TO BE SOLVED: To eliminate the loss of powder, to shorten the operation time of a plant and to eliminate risk to the quality of a product by introducing a reaction mixture into a flowing-through pipe, further treating the powder in the pipe and feeding it to a washer, separator or filter. SOLUTION: A dispersion, suspension or emulsion, secondary gas, combustion air and fuel are introduced into a burner 1. The resultant reaction mixture is introduced into a flowing-through pipe 2. An atmosphere of a reducing or oxidizing gas may be established in the flowing-through pipe 2. After passing through the pipe 2, the powder is treated in a washer 3 so as to prepare a dispersion or to prevent contact with air. The powder that leaves the pipe 2 may be separated by a separator 4 for simple treatment at a high temp. or may be separated using a filter 5 for long treatment at a high temp. Waste gas is discharged by a fan 6.

公开(公告)号：DE19821144A1

公开(公告)日：1999-11-18

申请号：DE19821144

申请日：1998-05-12

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN ,  GUTSCH ANDREAS ,  DOMESLE RAINER ,  KEISLING RALF ,  STOEHR OLIVER

IPC: B01J2/00 ,  B01J2/04 ,  B01J19/08 ,  B01J19/12 ,  B01J20/02 ,  B01J20/30 ,  B01J32/00 ,  B01J37/00 ,  C01B13/34 ,  C03B19/00 ,  C04B35/622 ,  B01D43/00 ,  B01J6/00 ,  B01J37/08 ,  B01J37/02 ,  C04B35/626

Abstract: A powdered heterogeneous substance is produced by treating a dispersion, suspension or emulsion in a turbulent or laminar burner under specified conditions, feeding the reaction mixture into a tube where it is further treated and then feeding it to a scrubber, separator or filter for further treatment.