摘要:
The present invention is characterized in that a casing 2 connected to an exhaust system 8, a honeycomb filter 3 placed in the inside of the casing 2, the honeycomb filter having a plurality of cells partitioned by partition walls, and plasma generation electrodes 6 placed being faced each other by sandwiching the honeycomb filter there are included, particulate matter contained in an exhaust gas is collected by the honeycomb filter 3, nitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide by nonthermal plasma generated between a pulse electrode 4 and an earth electrode 5 constituting the plasma generation electrodes 6, combustible materials in the particulate matter collected and deposited on the surface of the partition walls are removed through oxidation by the nitrogen dioxide produced. As a result, the honeycomb filter 3 can be regenerated.
摘要:
The present invention is characterized in that a casing 2 connected to an exhaust system 8, a honeycomb filter 3 placed in the inside of the casing 2, the honeycomb filter having a plurality of cells partitioned by partition walls, and plasma generation electrodes 6 placed being faced each other by sandwiching the honeycomb filter there are included, particulate matter contained in an exhaust gas is collected by the honeycomb filter 3, nitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide by nonthermal plasma generated between a pulse electrode 4 and an earth electrode 5 constituting the plasma generation electrodes 6, combustible materials in the particulate matter collected and deposited on the surface of the partition walls are removed through oxidation by the nitrogen dioxide produced. As a result, the honeycomb filter 3 can be regenerated.
摘要:
A honeycomb structure 1 for a catalyst carrier including partition walls 4 arranged so as to form a plurality of cells 3 which connect two end faces 2a, 2b, the partition walls 4 being porous and having a large number of pores; the structure further including plugging portions 10 arranged so as to alternately plug one of the end portions of each of the cells 3 in the two end faces 2a, 2b. A geometrical surface area (GSA: a value ((S1+S2)/V) obtained by dividing a total of the whole inner surface area (S1) excluding the cell pores and the whole inner surface area (S2) of the pores by the whole volume (V) of the honeycomb structure) is 80) cm2/cm3 or more and less than 300 cm2/cm3.
摘要翻译:一种用于催化剂载体的蜂窝结构体1,其包括分隔壁4,其被布置成形成多个孔,其连接两个端面2a,2b,分隔壁4是多孔的并且具有大量孔; 该结构进一步包括插入部分10,其布置成交替地插入两个端面2a,2b中每个单元3的端部之一。 几何表面积(GSA:通过将除了细胞孔之外的整个内表面积(S1)和孔的整个内表面积(S2)的总和除以所得到的值((S1 + S2)/ V) 蜂窝结构体积(V)为80cm 2 / cm 3以上且小于300cm 2 / cm 3。
摘要:
In the plasma reaction vessel (1) of the invention, two or more laminate-structures (6) having ceramic formed bodies (3, 4) in which a plasma generating electrode (2) capable of generating plasma is formed in two-tape-form, and an electrically continuous film-like electrically conductive electrode (5) held between the two ceramic formed bodies (3, 4) are formed in such a manner as to form a plasma generating space (7) containing mutual laminate planes therein. Of the electrically conductive electrodes (5), adjacent ones are capable of having electric discharge produced therebetween so as to generate the plasma in the plasma generating space (7) and of generating uniform stabilized plasma at low electric power, it being possible to reduce a passage resistance to a gas passing therein.
摘要:
There is disclosed a catalytic body with purifying efficiency and smaller pressure loss and its manufacturing method. Provided is a catalytic body wherein a porous honeycomb structure including partition walls defining a plurality of cells acting as fluid passages which extend through the honeycomb structure from one end surface to the other end surface thereof is formed of at least one type of (a) a catalytic substance and (b) a substance including an oxide and at least one type of noble metal carried on the oxide. The catalytic converter is characterized in that (c) 10% or more of a plurality of cells are plugged by plugging parts formed at one ends or in the middles of passages, that (d) the average pore diameter of the honeycomb structure is 10 μm or more, or that (e) the porosity is 40% or more.
摘要:
A honeycomb structure according to the present invention has partition walls, and a number of through-holes divided from each other by the partition walls and extending in an axial direction. The honeycomb structure contains silicon carbide (SiC) or a composite material having silicon carbide (SiC) as a main crystal phase, and has a cylindrical shape. A circularity of a periphery of the honeycomb structure is in a range of 1.0 to 2.5 mm. The honeycomb structure can be contained in a metal container in stable state and hardly has problems such as breakage or breakdown.
摘要:
In the plasma reaction vessel (1) of the invention, two or more laminate-structures (6) having ceramic formed bodies (3, 4) in which a plasma generating electrode (2) capable of generating plasma is formed in two-tape-form, and an electrically continuous film-like electrically conductive electrode (5) held between the two ceramic formed bodies (3, 4) are formed in such a manner as to form a plasma generating space (7) containing mutual laminate planes therein. Of the electrically conductive electrodes (5), adjacent ones are capable of having electric discharge produced therebetween so as to generate the plasma in the plasma generating space (7) and of generating uniform stabilized plasma at low electric power, it being possible to reduce a passage resistance to a gas passing therein.
摘要:
There is disclosed an exhaust gas purifying filter of the present invention comprising a honeycomb structure formed of a porous ceramic material and including: a large number of through-holes 3; plugged portions 10 formed in one end portion of each of predetermined through-holes 3 and in the other end portion of each of remaining through-holes 3; and partition walls 2 partitioning the through-holes 3 and formed into filter layers, characterized in that a plugging length is non-uniform for each plugged portion 10, and the filter has characteristics such as high porosity and thin wall while hardly causing defects such as chipping and falling-off of the plugged portions during packing, transporting, and handling.
摘要:
There is disclosed an exhaust gas purifying filter of the present invention comprising a honeycomb structure formed of a porous ceramic material and including: a large number of through-holes 3; plugged portions 10 formed in one end portion of each of predetermined through-holes 3 and in the other end portion of each of remaining through-holes 3; and partition walls 2 partitioning the through-holes 3 and formed into filter layers, characterized in that a plugging length is non-uniform for each plugged portion 10, and the filter has characteristics such as high porosity and thin wall while hardly causing defects such as chipping and falling-off of the plugged portions during packing, transporting, and handling.
摘要:
Silicon nitride sintered bodies including Si.sub.3 N.sub.4 and at least one element selected from Y.sub.2 O.sub.3, MgO, ZrO.sub.2. In the silicon nitride bodies, a J phase solid solution is present in an intergranular phase, which satisfies a relation of 0.65x.ltoreq.y.ltoreq.x+2 wherein y is an amount of J phase solid solution and x is an amount of Y.sub.2 O.sub.3 as an additive.
摘要翻译:包括Si 3 N 4和选自Y 2 O 3,MgO,ZrO 2中的至少一种元素的氮化硅烧结体。 在氮化硅体中,J相固溶体存在于晶间相中,其满足0.65x≤y≤x+ 2的关系,其中y是J相固溶体的量,x是量 的Y2O3作为添加剂。