Patent RU-2715711-C2 (RU)
Title: Multifunctional coating application system and coating application unit for application of washcoat catalytic coating and/or solution onto substrate and methods of application
Inventor: GRAMICHCHIONI GERI A
IPC: B01J37/02
Filed: 2016-03-28
Granted: 2020-03-03
Abstract: FIELD: chemistry. 
     SUBSTANCE: present invention relates to systems and methods of applying a coating on a substrate as part of a continuous catalytic coating process. Described is a multi-section system for applying coatings on a substrate, comprising: a section of untreated mass, in which the initial weight of the substrate is measured; a first section of a catalyst coating of a substrate, in which a first wet coating containing a first catalyst coating and a first carrier fluid is introduced into the longitudinal cells of the substrate; a first wet weight section, in which a first wet weight of the substrate is measured; a first in-built calcining unit, in which a heating fluid is introduced into the first catalytic coating calcination substrate at a first calcination temperature; a first section of the calcined mass, in which the calcined mass of the substrate is measured; a first multi-phase drying section located downstream of the first wet weight section and before the first in-built calcination unit, in which first wetting agent first carrier fluid, at least partially evaporated from longitudinal cells of substrate to obtain at least substantially dried substrate; and a first cooling section and a first dry mass section arranged downstream of the first multi-phase drying section, wherein in the cooling section the temperature of the substantially dried substrate is reduced, and in the dry mass section the first dry weight of the substrate containing the deposited first catalytic coating is measured, coating is provided by means of a device for depositing a metered coating on a substrate, which comprises a substrate receiving portion, having a receiving chamber for feeding a wet catalytic coating therein and a pressure-tight chamber for feeding gas therein. Other embodiments of multisection coating systems for substrate are also described. Device for depositing a metered coating on a substrate comprises: a substrate receiving portion comprising a sealed chamber and a receiving chamber, wherein the sealed chamber and the receiving chamber have such a configuration and size to be put on the substrate and to form a sealed seal with the substrate in the closed position; compressed gas source, which provides gas with controlled pressure, technologically connected and in hydraulic communication with sealed chamber, wherein compressed gas is supplied to sealed chamber; a pressure regulator which is technologically connected to a compressed gas source, which controls the pressure of the gas fed into the sealed chamber; and a catalytic coating source, which provides a wet coating, technologically connected and in hydraulic communication with the receiving chamber, wherein the wet coating is supplied to the receiving chamber. 
     EFFECT: technical result is shorter time required for application of coating on monolithic catalyst substrate with simultaneous increase in uniformity of depth and applied amount. 
     24 cl, 10 dwg