公开(公告)号：DE4424019C1

公开(公告)日：1996-01-04

申请号：DE4424019

申请日：1994-07-08

Applicant: DEGUSSA

Inventor： DOMESLE RAINER DR ,  ENGLER BERND DR ,  KUHL WOLFGANG ,  LOX EGBERT DR ,  FEHNLE OLIVER ,  LEIBOLD WALTER

IPC: B01J35/04 ,  B01J37/00 ,  B01J37/08 ,  F01N3/28 ,  B01D53/86 ,  B01D53/94

Abstract: A cylindrical catalyst honeycomb body is bordered by two end surfaces forming the inlet and outlet surfaces, and a surrounding shell surface is formed by introducing a ceramic mass into the channels. The ceramic mass is introduced by at least one nozzle to the channel, where the nozzle and honeycomb body are moved relative to one another with simultaneous guiding of the nozzle on the shell surface and/or the end surface contour.

公开(公告)号：ZA991899B

公开(公告)日：1999-09-27

申请号：ZA991899

申请日：1999-03-09

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN ,  BIRTIGH GERHARD ,  MERGNER BERND ,  HASSELMANN WOLFGANG ,  DITTRICH EWALD ,  LEIBOLD WALTER ,  HOFFMANN MICHAEL ,  SCHAEFER ROBERT

IPC: B01J35/04 ,  B01D53/86 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28 ,  B01J

Abstract: The channels (1) are filled (11) from below, with a quantity up to 10% greater than their empty volume, until the dispersion rises above the upper surface (17). The excess is removed (8, 9) before emptying the channels. Impulsive suction from a low pressure vessel (5) connected with the lower end face of the substrate (1), then clears the passages. The interval between starting to fill and completion of emptying, is no longer than 5 seconds. Preferred Features: The (partial) vacuum vessel (5) has an initial pressure of 150 mbar and a volume 100-1000 times that of the catalyst substrate. During suction, a minimum air velocity of 5 m/s is maintained in the channels. The open flow cross section to the vacuum vessel is adjustable from 0 to a maximum value. When thixotropic or intrinsically-viscous dispersions are used, the interval between filling and sucking-out is so short, that the limit of flowability cannot set in. The substrate is moistened before coating and may be pre-impregnated with acids, bases or salt solutions. Following emptying of the flow channels, before firing, a flow of heated dry air at 50-80 degrees C is passed. This is delivered against the direction of emptying, at a speed of 2-10 m/s, over an interval of 2-60 seconds.

公开(公告)号：ZA9901899B

公开(公告)日：1999-09-27

申请号：ZA9901899

申请日：1999-03-09

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN ,  BIRTIGH GERHARD ,  MERGNER BERND ,  HASSELMANN WOLFGANG ,  DITTRICH EWALD ,  LEIBOLD WALTER ,  HOFFMANN MICHAEL ,  SCHAEFER ROBERT

IPC: B01D53/86 ,  B01J35/04 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28 ,  B01J

CPC classification number: B05D7/22 ,  B01J37/0215

公开(公告)号：ZA955606B

公开(公告)日：1996-02-15

申请号：ZA955606

申请日：1995-07-05

Applicant: DEGUSSA

Inventor： DOMESLE RAINER ,  KUHL WOLFGANG ,  FEHNLE OLIVER ,  ENGLER BERND ,  LOX EGBERT ,  LEIBOLD WALTER

IPC: B01J35/04 ,  B01J37/00 ,  B01J37/08 ,  F01N3/28 ,  B02J ,  F01N ,  B01D ,  B01J

Abstract: A cylindrical catalyst honeycomb body is bordered by two end surfaces forming the inlet and outlet surfaces, and a surrounding shell surface is formed by introducing a ceramic mass into the channels. The ceramic mass is introduced by at least one nozzle to the channel, where the nozzle and honeycomb body are moved relative to one another with simultaneous guiding of the nozzle on the shell surface and/or the end surface contour.

公开(公告)号：BR9903037A

公开(公告)日：2000-05-09

申请号：BR9903037

申请日：1999-03-10

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN ,  DITTRICH EWALD ,  BIRTIGH GERHARD ,  LEIBOLD WALTER ,  MERGNER BERND ,  HOFFMAN MICHAEL ,  HASSELMANN WOLFGANG ,  SCHAEFER ROBERT

IPC: B01D53/86 ,  B01J35/04 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28 ,  B01J37/025

Abstract: The channels (1) are filled (11) from below, with a quantity up to 10% greater than their empty volume, until the dispersion rises above the upper surface (17). The excess is removed (8, 9) before emptying the channels. Impulsive suction from a low pressure vessel (5) connected with the lower end face of the substrate (1), then clears the passages. The interval between starting to fill and completion of emptying, is no longer than 5 seconds. Preferred Features: The (partial) vacuum vessel (5) has an initial pressure of 150 mbar and a volume 100-1000 times that of the catalyst substrate. During suction, a minimum air velocity of 5 m/s is maintained in the channels. The open flow cross section to the vacuum vessel is adjustable from 0 to a maximum value. When thixotropic or intrinsically-viscous dispersions are used, the interval between filling and sucking-out is so short, that the limit of flowability cannot set in. The substrate is moistened before coating and may be pre-impregnated with acids, bases or salt solutions. Following emptying of the flow channels, before firing, a flow of heated dry air at 50-80 degrees C is passed. This is delivered against the direction of emptying, at a speed of 2-10 m/s, over an interval of 2-60 seconds.

公开(公告)号：CZ9900732A3

公开(公告)日：2000-02-16

申请号：CZ73299

申请日：1999-03-03

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN DR ,  DITTRICH EWALD ,  BIRTIGH GERHARD ,  LEIBOLD WALTER ,  MERGNER BERND ,  HOFFMANN MICHAEL DR ,  HASSELMANN WOLFGANG ,  SCHAFER ROBERT

IPC: B05B13/06 ,  B01J37/02

公开(公告)号：TR9900519A2

公开(公告)日：1999-10-21

申请号：TR9900519

申请日：1999-03-10

Applicant: DEGUSSA

Inventor： FOERSTER DR MARTIN ,  DITTRICH EWALD ,  BIRTIGH GERHARD ,  LEIBOLD WALTER ,  MERGNER BERND ,  HOFFMANN DR MICHAEL ,  HASSELMANN WOLFGANG ,  FER ROBERT SCH

IPC: B01D53/86 ,  B01J35/04 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28

CPC classification number: B05D7/22 ,  B01J37/0215

公开(公告)号：AU2034299A

公开(公告)日：1999-09-23

申请号：AU2034299

申请日：1999-03-10

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN ,  SCHAFER ROBERT ,  HASSELMANN WOLFGANG ,  HOFFMANN MICHAEL ,  MERGNER BERND ,  LEIBOLD WALTER ,  BIRTIGH GERHARD ,  DITTRICH EWALD

IPC: B01D53/86 ,  B01J35/04 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28 ,  B05D7/24 ,  B05C19/04 ,  B05C7/04

Abstract: The channels (1) are filled (11) from below, with a quantity up to 10% greater than their empty volume, until the dispersion rises above the upper surface (17). The excess is removed (8, 9) before emptying the channels. Impulsive suction from a low pressure vessel (5) connected with the lower end face of the substrate (1), then clears the passages. The interval between starting to fill and completion of emptying, is no longer than 5 seconds. Preferred Features: The (partial) vacuum vessel (5) has an initial pressure of 150 mbar and a volume 100-1000 times that of the catalyst substrate. During suction, a minimum air velocity of 5 m/s is maintained in the channels. The open flow cross section to the vacuum vessel is adjustable from 0 to a maximum value. When thixotropic or intrinsically-viscous dispersions are used, the interval between filling and sucking-out is so short, that the limit of flowability cannot set in. The substrate is moistened before coating and may be pre-impregnated with acids, bases or salt solutions. Following emptying of the flow channels, before firing, a flow of heated dry air at 50-80 degrees C is passed. This is delivered against the direction of emptying, at a speed of 2-10 m/s, over an interval of 2-60 seconds.

公开(公告)号：PL331816A1

公开(公告)日：1999-09-13

申请号：PL33181699

申请日：1999-03-08

Applicant: DEGUSSA

Inventor： FOERSTER MARTIN ,  DITTRICH EWALD ,  BIRTIGH GERHARD ,  LEIBOLD WALTER ,  MERGNER BERND ,  HOFFMANN MICHAEL ,  HASSELMANN WOLFGANG ,  SCHAEFER ROBERT

IPC: B01J35/04 ,  B01D53/86 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28

Abstract: The channels (1) are filled (11) from below, with a quantity up to 10% greater than their empty volume, until the dispersion rises above the upper surface (17). The excess is removed (8, 9) before emptying the channels. Impulsive suction from a low pressure vessel (5) connected with the lower end face of the substrate (1), then clears the passages. The interval between starting to fill and completion of emptying, is no longer than 5 seconds. Preferred Features: The (partial) vacuum vessel (5) has an initial pressure of 150 mbar and a volume 100-1000 times that of the catalyst substrate. During suction, a minimum air velocity of 5 m/s is maintained in the channels. The open flow cross section to the vacuum vessel is adjustable from 0 to a maximum value. When thixotropic or intrinsically-viscous dispersions are used, the interval between filling and sucking-out is so short, that the limit of flowability cannot set in. The substrate is moistened before coating and may be pre-impregnated with acids, bases or salt solutions. Following emptying of the flow channels, before firing, a flow of heated dry air at 50-80 degrees C is passed. This is delivered against the direction of emptying, at a speed of 2-10 m/s, over an interval of 2-60 seconds.

公开(公告)号：CA2265071A1

公开(公告)日：1999-09-10

申请号：CA2265071

申请日：1999-03-09

Applicant: DEGUSSA

Inventor： LEIBOLD WALTER ,  HOFFMANN MICHAEL ,  HASSELMANN WOLFGANG ,  MERGNER BERND ,  BIRTIGH GERHARD ,  SCHAEFER ROBERT ,  DITTRICH EWALD ,  FOERSTER MARTIN

IPC: B01D53/86 ,  B01J35/04 ,  B01J37/02 ,  B05D7/22 ,  B28B11/04 ,  C04B41/45 ,  F01N3/28

Abstract: A process for the coating of the flow channels of a cylindrical, honeycomb form catalyst carrier with a dispersion coating through filling of the vertically oriented flow channels with a fill quantity of the coating dispersion through the bottom face of the catalyst carrier and subsequent downward emptying and clearance extraction of the flow channels, as well as drying and calcination of the catalyst carrier, by the following steps: a) filling of the flow channels with a fill quantity that is about 10% greater than the empty volume of the flow channels, so that the coating dispersion goes over the upper face of the catalyst carrier after completion of the filling cycle, b) removal of the excess coating dispersion at the top before emptying of the flow channels and c) emptying and clearance extraction of the flow channels through an extraction impulse, which is generated by connection of a vacuum tank with the bottom face of the catalyst carrier, whereby the time between the beginning of the fill cycle and the end of the emptying and clearance extraction amounts to no more than 5 seconds.