Zirconium chromium corundum honeycomb ceramic heat accumulator

Abstract

The invention discloses a novel zirconium and cadmium corundum honeycomb ceramics heat retainer consisting of schmigel, Alpha-Al2O3 powder, clay, MgO, organic fibrin, tung oil, Cr2O3 and ZrO2 powder, with weight ratio of each component of 40-50 percent, 20-30 percent, 5-10 percent, 3-10 percent, 3-8 percent, 3-7 percent, 3-7 percent and 3-7 percent in sequence. The weight percentage of heat retainer chemical components is that: 48-60 percent of Al2O3, 16-25 percent of SiO2, 3-7 percent of ZrO2, 3-7 percent of Cr2O3, 3-15 percent of MgO. The invention can be arranged into a regenerative heating furnace and applicable to the invention of temperature below 1500 DEG C, save fuel up to 40-70 percent, improve output more than 15 percent, decrease the discharge of NOX gas to less than 100ppm and lead the smog discharge temperature to be less than 150 DEG C, thereby obviously improving firing effect, greatly reducing the discharge of harmful gas, prolonging the service life of the regenerative heating furnace, improving the environment and enhancing economic benefit and social benefit.

Description

technical field [0001] The invention relates to ceramics, in particular to a novel honeycomb ceramic regenerator made of zirconium chromium corundum. Background technique [0002] At present, the regenerative high-temperature air combustion technology (HTAC) with dual effects of energy saving and environmental protection has been widely used in various industrial furnaces such as steel and petrochemical furnaces. It can improve the combustion effect and save energy. It can also reduce harmful gas emissions and reduce environmental pollution. As the key component in the regenerative heating furnace - the regenerator, the performance index and thermal efficiency of the regenerative heating furnace directly depend on the performance of the regenerator. The small-diameter spherical or spot-welded ceramic ball regenerator developed in the 1980s can make the regenerative heating furnace compact in structure, and better solve the problems of large system volume and low thermal eff...

AI Technical Summary

Problems solved by technology

The small-diameter spherical or spot-welded ceramic ball regenerator developed in the 1980s can make the regenerative heating furnace compact in structure, and better solve the problems of large system volume and low thermal efficiency of the traditional checker brick regenerator. However, the specific surface area of ​​the small-diameter spherical or spot-welded ceramic ball regenerator is small, and the pressure drop generated during use is large, so the use is limited

However, there are still some shortcomings in the use of the above-mentioned honeycomb ceramic regenerators: First, the temperature resistance of the honeycomb ceramic regenerators is not high. The heat body works in an environment above 1500°C; the second is that the heat capacity is low, generally below 1300J / KgK, the resistance to rapid cooling and rapid heating is low, and it cannot be used for a long time, which affects the energy-saving effect of the regenerative heating furnace and the emission of flue gas The amount is relatively high, but the economic and social benefits are not high