公开(公告)号：US11806655B2

公开(公告)日：2023-11-07

申请号：US17157055

申请日：2021-01-25

Applicant: NGK Insulators, Ltd.

Inventor： Kazuya Yuki

IPC: B01D46/24 ,  B01D53/94 ,  B01J35/04 ,  B01J20/28 ,  B01J20/16 ,  F01N3/28 ,  F01N3/022 ,  B01D46/82

CPC classification number: B01D46/247 ,  B01D46/249 ,  B01D46/2474 ,  B01D46/2476 ,  B01D46/2484 ,  B01D46/2486 ,  B01D46/2492 ,  B01D46/2494 ,  B01D46/82 ,  B01D53/94 ,  B01J20/16 ,  B01J20/28045 ,  B01J35/04 ,  F01N3/0222 ,  F01N3/2803 ,  B01D2255/9155 ,  B01D2255/9207 ,  B01D2279/30 ,  F01N2330/02

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion, wherein the partition wall defining inflow cells includes partition wall parts making up sides of polygon that is sectional shape of each cell, the partition wall parts each having a surface that is a face defining the inflow cell, the partition wall part is either a first partition wall part loaded with the exhaust-gas purifying catalyst on the surface so that a percentage of the area loaded therewith exceeds 10%, or a second partition wall part loaded with the exhaust-gas purifying catalyst so that a percentage of the area loaded therewith is 10% or less, and the partition wall is configured to include one or more the first partition wall parts and one or more the second partition wall parts as the partition wall parts.

公开(公告)号：US20230090236A1

公开(公告)日：2023-03-23

申请号：US18045680

申请日：2022-10-11

Applicant: UNIFRAX I LLC

Inventor： Christopher Brook ROBINSON ,  Mauricio Munhoz DE SOUZA ,  Robert M. CRAVENS

IPC: B01D46/00 ,  B01D46/24 ,  B01D46/82

Abstract: A vacuum formed part includes at least two layers with one layer including a catalyst and the other not including a catalyst. At least one of the layers is formed by applying a slurry to a die or mold and applying a vacuum to the die or mold. The other layer may be formed from a slurry or may be provided onto the die or mold in the form of a fiber mat or blanket.

公开(公告)号：US20240246015A1

公开(公告)日：2024-07-25

申请号：US18542863

申请日：2023-12-18

Applicant: NGK INSULATORS, LTD.

Inventor： Yuta KATO ,  Shinji KATO ,  Narimasa SHINODA

IPC: B01D46/24 ,  B01D39/20 ,  B01D46/82 ,  B01D53/88 ,  F01N3/28

CPC classification number: B01D46/2455 ,  B01D39/2093 ,  B01D46/24491 ,  B01D46/24492 ,  B01D46/82 ,  B01D53/885 ,  F01N3/2828 ,  B01D2258/012 ,  F01N2370/02

Abstract: A honeycomb filter includes a pillar-shaped honeycomb structure having a porous partition wall disposed so as to surround a plurality of cells which serve as a fluid through channel extending from a first end face to a second end face; a plugging portion provided at either an end on the first end face side or the second end face side of the cell; and a catalyst for purifying exhaust gas that is loaded on the partition wall; wherein, in the state where the catalyst is not loaded, the partition wall has a pore volume of 0.07 to 0.30 cc/g of pores having a pore diameter of 10 μm or less, an average pore diameter of 11 to 23 μm, and a porosity of 56 to 65%.

公开(公告)号：US20230294032A1

公开(公告)日：2023-09-21

申请号：US18016574

申请日：2021-07-09

Applicant: W. L. Gore & Associates, Inc.

Inventor： Monaca A. McNall ,  Zhuonan Song

IPC: B01D46/82 ,  F23J15/02 ,  B01D53/86 ,  B01D53/96

CPC classification number: B01D46/82 ,  B01D53/8625 ,  B01D53/96 ,  F23J15/025 ,  B01D2251/2062 ,  B01D2257/404 ,  B01D2258/0283 ,  F23J2215/10 ,  F23J2219/10

Abstract: Some non-limiting embodiments of the present disclosure relate to a method of regenerating at least one filter medium, the method comprising flowing a flue gas stream through or by the at least one filter medium at a first temperature and increasing the temperature of the flue gas stream from the first temperature to a second temperature that exceeds the first temperature. Some non-limiting embodiments of the present disclosure relate to a method of cleaning a flue gas stream, the method comprising maintaining the NOx removal efficiency by increasing the temperature of the flue gas stream from the first temperature to a second temperature that exceeds the first temperature.

公开(公告)号：US20220184591A1

公开(公告)日：2022-06-16

申请号：US17440817

申请日：2020-06-01

Applicant: CATALER CORPORATION

Inventor： Ryota ONOE ,  Ryo TASAKI ,  Momoko IWAI ,  Yamato MATSUSHITA

IPC: B01J35/04 ,  B01J23/58 ,  B01D46/24 ,  B01D46/82 ,  F01N3/035 ,  F01N3/022

Abstract: A particulate filter includes a base material having a wall-flow structure including porous partition walls partitioning inlet and outlet cells, and wash-coating layers held inside partition walls. The wash-coating layers include inlet layers each formed from vicinity of an end portion at exhaust gas inflow side to have predetermined length and thickness and outlet layers each formed from vicinity of end portion at exhaust gas outflow side to have a predetermined length and thickness. The inlet and the outlet layers partially overlap with each other. Inlet layers of particulate filter contain substantially no noble metal catalyst, and outlet layers contain noble metal catalyst. Accordingly, PM collection performance can be easily enhanced in inlet region, and high gas distributability (pressure loss suppression performance) can be maintained in outlet region. Accordingly, it is possible to provide particulate filter capable of achieving high levels of PM collection performance and pressure loss suppression performance.

公开(公告)号：US11808188B2

公开(公告)日：2023-11-07

申请号：US17618082

申请日：2020-06-26

Applicant: Cataler Corporation

Inventor： Ryo Tasaki ,  Ryota Onoe ,  Momoko Iwai ,  Yamato Matsushita

IPC: F01N3/022 ,  B01D46/82 ,  B01D46/24 ,  B01D53/94 ,  B01J21/04 ,  B01J23/02 ,  B01J23/58 ,  B01J35/00 ,  B01J35/04 ,  F01N3/035 ,  F01N3/023 ,  F01N9/00 ,  F01N3/021 ,  F01N3/025 ,  F01N3/28

CPC classification number: F01N3/022 ,  B01D46/2474 ,  B01D46/82 ,  B01D53/94 ,  B01J21/04 ,  B01J23/02 ,  B01J23/58 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/035 ,  B01D2255/1023 ,  B01D2255/9022 ,  B01D2255/9155 ,  B01D2279/30 ,  F01N3/021 ,  F01N3/023 ,  F01N3/0253 ,  F01N3/2882 ,  F01N9/002 ,  F01N2250/02 ,  F01N2330/06 ,  F01N2370/24 ,  F01N2510/063 ,  F01N2510/0682 ,  F01N2510/0684

Abstract: A particulate filter disclosed herein includes a wall-flow structure substrate 10 and a wash coat layer 20 held inside a partition 16 of the substrate 10. The wash coat layer 20 includes an inlet layer 22 formed to have predetermined length LA and thickness TA from near an end thereof on an exhaust gas inflow side X1, and an outlet layer 24 formed to have predetermined length LB and thickness TB from near an end thereof on an exhaust gas outflow side X2. The inlet layer 22 and the outlet layer 24 partially overlap each other. In the particulate filter disclosed herein, the inlet layer 22 contains a precious metal catalyst, while the outlet layer 24 contains substantially no precious metal catalyst. The length LA of the inlet layer is 50% or more and 75% or less of a total length L of the partition 16. Thus, the particulate filter is capable of achieving both PM collection performance and pressure-drop reduction performance at high levels.

公开(公告)号：US20230166209A1

公开(公告)日：2023-06-01

申请号：US17920064

申请日：2021-04-09

Applicant: KHANFILTER, INC.

Inventor： Dae Gon HAN

IPC: B01D46/82 ,  B01D46/46 ,  B01D46/44

CPC classification number: B01D46/82 ,  B01D46/46 ,  B01D46/448

Abstract: According to an embodiment of the present application, there may be provided an air purification apparatus for purifying polluted air and discharging the purified air, which comprises a main pipe including a first flow path, a second flow path, a first filter, a first main area, and a second main area. The air purification apparatus can operate in a filtering mode in which at least some contaminants contained in the air flowing into the main pipe are collected by the first filter, or a cleaning mode in which at least some of the contaminants collected by the first filter in the filtering mode are removed, wherein an operation section in the cleaning mode of the air purification apparatus includes a firs section and a second section, the first section and the second section are divided on the basis of a first division time point, and the rate of change of temperature in the first main area is varied before and after the first division time point.

公开(公告)号：US11578629B2

公开(公告)日：2023-02-14

申请号：US17135070

申请日：2020-12-28

Applicant: NGK INSULATORS, LTD.

Inventor： Shogo Takeno ,  Kousuke Ujihara ,  Kenji Morimoto

IPC: F01N3/022 ,  B01D39/20 ,  B01D46/24 ,  B01J23/10 ,  B01J35/04 ,  B01D46/82 ,  F01N3/023

Abstract: A porous composite includes a porous base material, and a porous collection layer. The collection layer is provided on the base material. The collection layer contains praseodymium oxide.

公开(公告)号：US20220316372A1

公开(公告)日：2022-10-06

申请号：US17618082

申请日：2020-06-26

Applicant: Cataler Corporation

Inventor： Ryo Tasaki ,  Ryota Onoe ,  Momoko Iwai ,  Yamato Matsushita

IPC: F01N3/022 ,  F01N3/035 ,  B01D46/24 ,  B01D46/82 ,  B01D53/94 ,  B01J23/02 ,  B01J21/04 ,  B01J23/58 ,  B01J35/04 ,  B01J35/00

Abstract: A particulate filter disclosed herein includes a wall-flow structure substrate 10 and a wash coat layer 20 held inside a partition 16 of the substrate 10. The wash coat layer 20 includes an inlet layer 22 formed to have predetermined length LA and thickness TA from near an end thereof on an exhaust gas inflow side X1, and an outlet layer 24 formed to have predetermined length LB and thickness TB from near an end thereof on an exhaust gas outflow side X2. The inlet layer 22 and the outlet layer 24 partially overlap each other. In the particulate filter disclosed herein, the inlet layer 22 contains a precious metal catalyst, while the outlet layer 24 contains substantially no precious metal catalyst. The length LA of the inlet layer is 50% or more and 75% or less of a total length L of the partition 16. Thus, the particulate filter is capable of achieving both PM collection performance and pressure-drop reduction performance at high levels.

公开(公告)号：US20250001346A1

公开(公告)日：2025-01-02

申请号：US18704788

申请日：2022-10-25

Applicant: Metalmark Innovations, PBC

Inventor： Sissi LIU ,  Elijah SHIRMAN ,  Tanya SHIRMAN

IPC: B01D46/82 ,  B01D39/20 ,  B01D46/00 ,  B01D46/52 ,  B01D46/62

Abstract: An air filter comprises a filter element that includes a proximal surface configured to receive a flow of air; is configured to remove a set of pollutants from the received flow of air; and includes a distal surface configured to allow passage of the flow of air after removal of the set of pollutants. The air filter further comprises a first activation element that is in contact with a first activated area located on the proximal surface of the filter element; and is configured to activate the first activated area; and also comprises a second activation element that is in contact with a second activated area located on the distal surface of the filter element; and is configured to activate the second activated area. In some embodiments, the air filter further comprises a controller configured to independently control operations of the first activation element and the second activation element.