HONEYCOMB FILTER

• Main Authors: TERANISHI RITSUKO, OHASHI TATSUYA, FURUTA YASUYUKI, SAKAI FUMIKA, YOSHIOKA FUMIHIKO, KURIMOTO YUDAI
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2023
• Subjects: ARTIFICIAL STONE; BLASTING; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; LIME, MAGNESIA; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SEPARATION; SLAG; STEAM ENGINES; TRANSPORTING; TREATMENT OF NATURAL STONE; WEAPONS

To provide a honeycomb filter which is excellent in capturing performance and has pressure loss reduced.SOLUTION: The honeycomb filter comprises columnar honeycomb structure parts 4 having porous bulkheads 1 arranged to surround a plurality of cells 2 extending from a first end face 11 to a second end face 12, and sealing parts 5 arranged at opening parts at one side of the cells 2. When pore sizes (μm) at which cumulative pore volumes are equal to 10%, 50% and 90% of total pore volumes are defined as D10, D50 and D90 respectively in a pore size distribution of the bulkheads 1 determined by structural analysis, all of the following formals (1)-(6) are satisfied: 3.9 μm<D10 (1) 10.5 μm<D50<16.6 μm (2) D90<38.7 μm (3) (logD90-logD10)/logD50<0.80 (4) logD90/logD50<1.36 (5) and logD50/logD10<1.56 (6).SELECTED DRAWING: Figure 1 【課題】捕集性能に優れ、且つ、圧力損失が低減されたハニカムフィルタを提供する。【解決手段】第一端面１１から第二端面１２まで延びる複数のセル２を取り囲むように配置された多孔質の隔壁１を有する柱状のハニカム構造部４と、それぞれのセル２のいずれか一方の開口部に配設された目封止部５と、を備え、構造解析によって求められた隔壁１の細孔径分布において、累積細孔容積が総細孔容積の１０％、５０％及び９０％となる細孔径（μｍ）を、それぞれＤ１０、Ｄ５０及びＤ９０とした場合に、下記式（１）～（６）の全てを満たす。３．９μｍ＜Ｄ１０・・（１）１０．５μｍ＜Ｄ５０＜１６．６μｍ・・（２）Ｄ９０＜３８．７μｍ・・（３）（ｌｏｇＤ９０－ｌｏｇＤ１０）／ｌｏｇＤ５０＜０．８０・・（４）ｌｏｇＤ９０／ｌｏｇＤ５０＜１．３６・・（５）ｌｏｇＤ５０／ｌｏｇＤ１０＜１．５６・・（６）【選択図】図１