Layered honeycomb ceramic

Abstract

The invention relates to layered honeycomb ceramic. The layered honeycomb ceramic is formed by longitudinal stacking of more than two layers of structural units and more than one spacer layer arranged between every two adjacent layers of structural units, more than one gas channel A penetrating through each structural unit is distributed in each structural unit in a meshed manner, the gas channels A on the same structural unit are unconnected mutually, the gas channels A of every two adjacent layers of structural units are in one-to-one correspondence, each spacer layer is composed of more than one spacer distributed on the layer surface in a spacing manner, and the gas channels A of the every two adjacent layers of structural units located outside a spacer region are mutually connected through gaps between the spacers as well as between the spacers and the edges of the structural units. Gas distribution in the honeycomb ceramic is improved, system resistance of an RTO device is reduced beneficially, and heat efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of organic waste gas treatment devices, in particular to a layered honeycomb ceramic. Background technique [0002] Honeycomb ceramics is a key component of the organic waste gas treatment device - Regenerative Thermal Oxidation Reactor (RTO). Its main function is to store heat and release heat, that is, to store the heat of the organic waste gas burned in the RTO device in the honeycomb ceramics. And transfer the stored heat to the cold waste gas to be treated, so as to increase the temperature of the waste gas and save the heat required for waste gas treatment. [0003] Existing honeycomb ceramics, its structure is a one-time extruded rectangular parallelepiped, the height of the rectangular parallelepiped is generally 150mm, 300mm or more, the cross section is square, and the hole structure is a straight-through square hole independent of each other or a partially connected groove shape. holes (slotted h...

AI Technical Summary

Problems solved by technology

The characteristic of this kind of honeycomb ceramic is that it has a large specific surface area. The disadvantage is that the internal holes (slots) and holes (slots) of the product are independent straight channels, and the channel length of the holes runs through the entire height of the device. Lateral redistribution cannot be carried out in the exhaust gas, which brings the following problems: First, because the exhaust gas usually contains certain impurities (such as sand and dust and other solid particles), these impurities can easily cause blockage of the pore channels if they accumulate for a long time. As a result, the device cannot operate normally and must be stopped for cleaning in stages; secondly, when the exhaust gas entering the RTO device is unevenly distributed, the air flow in the device cannot be redistributed, resulting in increased resistance of the system and reduced thermal efficiency; Third, the channel of the hole is long, which is not conducive to heat transfer; fourth, the height of the product is large, which is not conducive to the release of thermal stress, and the product has poor thermal shock resistance

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