Compact low expansion cordierite honeycomb ceramics heat accumulator

Abstract

The invention discloses a compact low expansion cordierite honeycomb ceramics heat accumulator, which is composed of 50-60% of cordierite powder, 0-10% of synthesized mullite powder, 5-25% of clay, 10-20% of feldspar powder and 5-15% of spodumene powder. The cordierite honeycomb ceramics heat accumulator has the advantages of small expansion coefficient and good thermal shock resistance performance, can increase the density, corrosion resistance, heat conduction coefficient and compression strength of the cordierite honeycomb ceramics heat accumulator, and has good comprehensive performance. The cordierite honeycomb ceramics heat accumulator can be widely used for a petroleum chemical process and various industries using an organic solvent, such as exhaust gas discharge processing devices-a regenerative thermal oxidizer in the industries of spraying, metal oil removing and degreasing, cementing agent, pharmacy, plastic, rubber processing and the like.

Description

technical field [0001] The invention relates to a dense low-expansion cordierite honeycomb ceramic regenerator of a regenerative thermal oxidizer, which is used for thermal oxidation and decomposition of volatile organic compounds. Background technique [0002] The Regenerative Thermal Oxidizer (RTO) with dual effects of environmental protection and energy saving is an important waste gas pollution control equipment, which can effectively treat harmful volatile organic compounds (VOC) and hazardous gas pollutants (HAP), It is widely used in petrochemical process and various industries using organic solvents, such as spraying, printing, metal degreasing and degreasing, cementing agent, pharmaceutical, plastic, rubber processing and other industries to treat waste gas. Honeycomb ceramic regenerator is the core component of regenerative thermal oxidizer (RTO). [0003] The currently used low-expansion honeycomb ceramic regenerator is loose cordierite honeycomb ceramic regenera...

AI Technical Summary

Problems solved by technology

[0003] The currently used low-expansion honeycomb ceramic regenerator is loose cordierite honeycomb ceramic regenerator, which has a small thermal expansion coefficient and good thermal shock resistance, and is widely used, but its high apparent porosity causes many shortcomings. The regenerator has a high apparent porosity. When it is used, it has a large contact area with the exhaust gas. It will be corroded by some acidic or alkaline exhaust gas, which will cause the regenerator to corrode and pulverize, and the compressive strength will decrease. In severe cases, the heat storage Experience plugging or fragmentation; the second is the presence of pores in the heat storage body, resulting in low density and low heat storage, which increases the volume of the regenerative thermal oxidizer (RTO) equipment; the third is the presence of pores in the heat storage body, The thermal resistance is formed, resulting in low thermal conductivity, which affects the heat transfer efficiency; the fourth is that the pores in the regenerator make its compressive strength lower