Treatment device equipped with catalyst-supporting honeycomb structure, and method for producing same
To provide a treatment device equipped with a catalyst-supporting honeycomb structure, the device being for use in, for example, an exhaust gas purification treatment, hydrogen production by ammonia decomposition or the like, and a method for producing the same. The catalyst-supporting honeycomb structure is produced by forming the inorganic binder-containing functional catalyst-supporting corrugated glass paper without removing an organic binder originally contained in the glass paper and by using the corrugated glass paper in combination with the inorganic binder-containing functional catalyst-supporting flat glass paper. In the treatment device equipped with a catalyst-supporting honeycomb structure, a corrugated glass paper having an inorganic binder-containing functional catalyst supported thereon and a flat glass paper having the same inorganic binder-containing functional catalyst supported thereon are alternately stacked to form the catalyst-supporting honeycomb structure, and this catalyst-supporting honeycomb structure is packed in a casing.
1. A method for producing a treatment device equipped with a catalyst-supporting honeycomb structure, which is characterized in that the method comprises the steps of:
applying a functional catalyst-containing slurry having an inorganic binder mixed therein on a flat glass paper;
placing and heating the slurry-applied flat glass paper on a corrugation mold of a high temperature, while shaping the glass paper with a presser jig and removing moisture in the slurry on the surface of the glass paper to dry the glass paper, thereby forming an inorganic binder-containing functional catalyst-supporting corrugated glass paper;
releasing the inorganic binder-containing functional catalyst-supporting corrugated glass paper from the corrugation mold while holding the shape;
meanwhile, placing and heating the slurry-applied flat glass paper on a flat mold of a high temperature to remove moisture in the slurry on the surface of the glass paper and dry the glass paper, thereby forming an inorganic binder-containing functional catalyst-supporting flat glass paper;
releasing the inorganic binder-containing functional catalyst-supporting flat glass paper from the flat mold while holding the shape; and
alternately stacking the inorganic binder-containing functional catalyst-supporting corrugated glass paper and the inorganic binder-containing functional catalyst-supporting flat glass paper and packing the stack in a casing.
2. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 1 , which is characterized in that the surface temperatures of the corrugation mold and the flat mold are within the range of from 200 to 500° C.
3. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 2 , which is characterized in that the inorganic binder contains at least one inorganic oxide selected from the group consisting of a silica sol, an alumina sol, a γ-alumina, a titanium oxide sol, and a zirconia sol.
4. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 2 , which is characterized in that the method comprises the step of: further baking the inorganic binder-containing functional catalyst-supporting corrugated glass paper and the inorganic binder-containing functional catalyst-supporting flat glass paper released from the respective molds to thermally decompose and remove an organic binder originally contained in the glass papers, while holding the shapes of the glass papers by the inorganic binder, to thereby form an inorganic binder-containing functional catalyst-supporting corrugated glass paper and an inorganic binder-containing functional catalyst-supporting flat glass paper.
5. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 2 , which is characterized in that, in the step of packing in the casing, the inorganic binder-containing functional catalyst-supporting corrugated glass paper and the inorganic binder-containing functional catalyst-supporting flat glass paper are alternately stacked without being bonded to each other.
6. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 1 , which is characterized in that the inorganic binder contains at least one inorganic oxide selected from the group consisting of a silica sol, an alumina sol, a γ-alumina, a titanium oxide sol, and a zirconia sol.
7. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 6 , which is characterized in that the method comprises the step of: further baking the inorganic binder-containing functional catalyst-supporting corrugated glass paper and the inorganic binder-containing functional catalyst-supporting flat glass paper released from the respective molds to thermally decompose and remove an organic binder originally contained in the glass papers, while holding the shapes of the glass papers by the inorganic binder, to thereby form an inorganic binder-containing functional catalyst-supporting corrugated glass paper and an inorganic binder-containing functional catalyst-supporting flat glass paper.
8. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 1 , which is characterized in that the method comprises the step of: further baking the inorganic binder-containing functional catalyst-supporting corrugated glass paper and the inorganic binder-containing functional catalyst-supporting flat glass paper released from the respective molds to thermally decompose and remove an organic binder originally contained in the glass papers, while holding the shapes of the glass papers by the inorganic binder, to thereby form an inorganic binder-containing functional catalyst-supporting corrugated glass paper and an inorganic binder-containing functional catalyst-supporting flat glass paper.
9. The method for producing a treatment device equipped with a catalyst-supporting honeycomb structure according to claim 1 , which is characterized in that, in the step of packing in the casing, the inorganic binder-containing functional catalyst-supporting corrugated glass paper and the inorganic binder-containing functional catalyst-supporting flat glass paper are alternately stacked without being bonded to each other.