公开(公告)号：US20150273380A1

公开(公告)日：2015-10-01

申请号：US14667998

申请日：2015-03-25

Applicant: NGK Insulators, Ltd.

Inventor： Satoshi SAKASHITA ,  Hiroyuki NAGAOKA

IPC: B01D46/24 ,  B01J35/10 ,  B01D53/94 ,  B01J35/04 ,  C04B38/00 ,  C04B38/06

CPC classification number: B01D46/2425 ,  B01D46/0001 ,  B01D46/2429 ,  B01D53/94 ,  B01D2046/2433 ,  B01D2046/2496 ,  B01J35/04 ,  B01J35/10 ,  B29D99/0089 ,  B33Y10/00 ,  B33Y80/00 ,  C04B28/24 ,  C04B35/565 ,  C04B35/62625 ,  C04B35/6365 ,  C04B38/0006 ,  C04B38/009 ,  C04B38/06 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/3826 ,  C04B2235/428 ,  C04B2235/6022 ,  C04B2235/6026 ,  C04B2235/606 ,  C04B38/0054 ,  C04B38/0074 ,  C04B14/324 ,  C04B14/4656 ,  C04B24/02

Abstract: A porous body constituting a porous partition wall 44 of a honeycomb filter 30 has a porosity P of 20% to 60%, a permeability k of 1 μm2 or more and satisfies k≧0.2823 P−10.404. The porous body is obtained by a method for producing, for example, includes (a) a step of acquiring porous body data representing a temporary porous body having porosity higher than target porosity, (b) a step of deriving information about a flow rate for each space voxel during passage of a fluid through inside of the porous body, (c) a step of preferentially replacing the voxel having a low flow rate among the space voxels with the object voxel, and adjusting the porosity of the porous body data to the target porosity, and (d) a step of forming a porous body based on the porous body data after replacement.

Abstract translation: 构成蜂窝过滤器30的多孔分隔壁44的多孔体的孔隙率P为20〜60％，磁导率k为1μm以上，满足k≥0.22823P-10.404。 多孔体可以通过例如（a）获取多孔体数据的步骤来获得，所述多孔体数据表示具有高于目标孔隙率的孔隙率的临时多孔体，（b）获得关于流速的信息的步骤， 每个空间体素在流体通过多孔体的内部时，（c）优先用物体体素替换具有低流速的体素的体素的步骤，并且将多孔体数据的孔隙率调整到 目标孔隙率，（d）基于更换后的多孔体数据形成多孔体的工序。