Cataler Corporation

Shoko Fukuyo

Minoru Ito

Kazuma Nakada

Ryo Nishimura

Yuki Tanaka

Eiichi Yasutomi

The purpose of the present invention is to provide a manufacturing method for an exhaust gas purification device that can uniformly coat a honeycomb substrate with slurry even when using a low viscosity slurry. The present invention pertains to a manufacturing method for an exhaust gas purification device that includes providing a slurry for catalyst layer formation from a shower nozzle onto a honeycomb substrate, coating the honeycomb substrate with the slurry, and firing the honeycomb substrate coated with the slurry, wherein the viscosity of the slurry at a shear rate of 4 sis 800 mPA&#xb7;s or less, the shower nozzle has a plurality of discharge openings for discharging the slurry, the relationship of the spacing a) of the discharge openings and the diameter b) of the liquid drops formed when starting supply of the slurry is 0.85&#x3c;a/b, and the equivalent diameter c) of a slurry face when starting supply of the slurry and the slurry has spread on the honeycomb substrate is greater than or equal to the spacing a) of the discharge openings.

Manufacturing method for exhaust gas purification device

A method of manufacturing an exhaust gas-purifying catalyst comprising: moving a gas-flow control tool from a first position where the gas-flow control tool faces the first end face with the slurry in the reservoir interposed therebetween and is spaced apart from the slurry in the reservoir to a second position where the gas-flow control tool faces the first end face with a distance from the first end face shorter than that in the first position, in a period during which the slurry flows from the first end face's side toward the second end face's side, the gas-flow control tool being configured to generate a distribution of linear velocities of gas flows when the gas-flow control tool faces the first end face and gas is passed therethrough toward the first end face.

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Kakegawa, Japan

Shoko Fukuyo