High-silicon heat storage honeycomb ceramic filler with high acid resistance and compactness

Abstract

The invention discloses a high-acid-resistance compact high-silicon heat-storage honeycomb ceramic filler which is prepared by the following steps: by taking quartz, feldspar, pyrophyllite, china clay, ball clay and kaolin as main raw materials, adjusting the adding proportions of the quartz, the feldspar, the pyrophyllite, the china clay, the ball clay and the kaolin through calculation, and uniformly mixing the quartz, the feldspar, the pyrophyllite, the china clay, the ball clay and the kaolin, thereby obtaining the high-acid-resistance compact high-silicon heat-storage honeycomb ceramic filler. The high-silicon heat-storage honeycomb ceramic filler is prepared by performing ball milling on the raw materials to obtain a mixture, ensuring that the content of silicon dioxide in the mixture is greater than or equal to 65wt%, adding an adhesive, a lubricating agent and a proper amount of water into the mixture, performing ball milling, fully mixing, kneading, pugging, forming, drying and sintering to obtain the high-silicon heat-storage honeycomb ceramic filler. The acid corrosion resistance of the high-silicon heat-storage honeycomb ceramic filler is enhanced by more than 98%; the sintering temperature is increased to 150-200 DEG C, and the volume density is increased to 2.3-2.6 g/cm < 3 >, so that the compactness of the heat storage filler is improved, the honeycomb wall material is difficult to corrode and cannot be pulverized and collapsed, and the service life is prolonged to more than two years.

Description

technical field [0001] The invention belongs to the field of environmental protection VOCS treatment, and mainly relates to a preparation method of a heat storage material for regenerative incineration of VOCS environmental protection and energy saving equipment. Background technique [0002] At present, the most used equipment in VOCS treatment is RTO. The core component used is honeycomb ceramic regenerator filler. At present, the heat storage filler includes saddle ring, heat storage ball, card combination honeycomb and honeycomb ceramic heat storage filler. During the process, the flue gas often contains acid gas. The currently used thermal storage fillers are all porous ceramics, which have high water absorption and high apparent porosity. Generally not more than 65%, the acid corrosion resistance is not strong, the inside and outside of the honeycomb wall material corrode at the same time, when used in the working condition of 700-900 ℃, usually in about three months, ...

AI Technical Summary

Problems solved by technology

[0002] At present, the most used equipment in VOCS treatment is RTO. The core component used in it is honeycomb ceramic regenerator filler. Currently, regenerative fillers include saddle rings, heat storage balls, card-combined honeycomb and honeycomb ceramic regenerative fillers. When processing VOCS During the process, the flue gas often contains acid gas. The currently used thermal storage fillers are all porous ceramics with high water absorption and high apparent porosity. The acid gas medium can easily penetrate into the inner wall of the filler honeycomb, and the content of acid oxide silicon oxide Generally not more than 65%, the acid corrosion resistance and dissolution ability are not strong, the inside and outside of the honeycomb wall material are corroded at the same time, when used at 700-900°C, generally in about three months, the porous material product will be severely corroded, lose strength, lose large Partial heat storage and heat exchange capacity; in particularly serious cases, the honeycomb heat storage filler will pulverize and collapse, causing the system to collapse and cause equipment production accidents