Preparation method of super wear-resistant ceramic substrate for pure low temperature waste heat power generation

Abstract

The invention provides a super wear-resistant ceramic substrate for pure low temperature waste heat power generation. The super wear-resistant ceramic substrate has the advantages of long service life, high temperature resistance, oxidation resistance, high high-temperature strength, good abrasive resistance, easy installation and the like. According to the technical scheme, the preparation method comprises the following steps: taking silicon carbide, silica, metallic silicon, metal aluminum powder, carbon-containing powder and natural mineral powder containing titanium oxide as raw materials; after sufficient mixing, burning a prepared mixture in a nitrogen atmosphere at 1300-1600 DEG C; after burning, uniformly mixing the burnt mixture with an additive, pouring into a mold assembled in advance to carry out high-pressure forming, and putting a formed brick into a drier for drying; after heat preservation is finished, gradually cooling for 4-10 h; and after hardening, drawing a charge to prepare the super wear-resistant ceramic substrate for pure low temperature waste heat power generation.

Description

technical field [0001] The invention relates to a super wear-resistant ceramic lining plate for pure low-temperature waste heat power generation, in particular to a pure natural mineral material whose main components include silicon carbide, silica, metal silicon, metal aluminum powder, carbon-containing powder and titanium oxide. A preparation method of an ultra-wear-resistant ceramic lining plate for low-temperature waste heat power generation. Background technique [0002] Pure low-temperature waste heat power generation uses the technology of converting excess heat energy in the cement production process into electrical energy. Waste heat power generation not only saves energy, but also benefits environmental protection. In the dry process cement production line, the exhaust gas discharged from the kiln tail preheater is installed in the kiln tail waste heat boiler, and the waste gas discharged from the kiln head clinker cooler is used to set up the kiln head waste heat ...

AI Technical Summary

Problems solved by technology

In the dry process cement production line, the exhaust gas discharged from the kiln tail preheater is installed in the kiln tail waste heat boiler, and the waste gas discharged from the kiln head clinker cooler is used to set up the kiln head waste heat boiler. The superheated steam generated by the four waste heat boilers is supplied to the steam turbine for power generation. To achieve the purpose of comprehensive utilization, energy saving and environmental protection; the pressure used is 0.69-1.25Mpa, the temperature is 280-340°C, and the exhaust gas volume at the outlet is as high as 82000-180000m 3 / h, the temperature is 90-360 ℃, and the particle size of the exhaust gas is large, which will cause severe erosion and wear to the waste heat boiler and various pipes. At present, the pure low-temperature waste heat power generation system uses wear-resistant castables. The castable is smeared and bonded to the inner wall of the pure low-temperature waste heat power generation system. It is easy to fall off, wear and corrode under the impact and corrosion of steam, high air volume, and clinker particles. It needs to be repaired or replaced frequently to make the whole pure low-temperature waste heat The cost of the power generation system increases and the service life decreases