Method and device for improving corrosion resistance of regenerator lattice body and application of high-alumina alkali-free borosilicate glass powder as refractory material

Abstract

The invention discloses a method and a device for improving erosion resistance of a regenerator checker and application of high-aluminum alkali-free borosilicate glass powder as a refractory material. The method comprises the steps of: 1) making use of compressed air to spray high-aluminum alkali-free borosilicate glass powder on a checker surface at 800-1400DEG C through an observation hole of the regenerator so as to make the glass powder fill micropores on the surface of the checker and form a coating; and 2) spraying the glass powder to thicken the coating so as to form a compact glass phase protective layer. The device includes a powder storage tank equipped with a powder discharge port at the bottom and a three-way pipe. The powder discharge port is connected to a branch pipe of the three-way pipe. The input end of the three-way pipe's main pipe is in connection with a compressed air device. The output end of the main pipe is connected to the head end of a powder spraying gun, the tail end of which stretches into the regenerator. By the method, the compact protective coating layer can be formed, direct contact of acidic flue gas and a checker brick can be avoided, the erosion resistance of the checker can be enhanced, the service life of a glass melting furnace and the efficiency of the regenerator are improved, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of glass production lines, in particular to a method and device for improving the corrosion resistance of a regenerator lattice body of a glass melting furnace and the application of high-alumina alkali-free borosilicate glass powder as a refractory material. Background technique [0002] The regenerator of the glass melting furnace is a waste heat recovery device. For the glass melting furnace that uses air as the combustion air, the regenerator can effectively preheat the combustion air. The regenerator uses lattice bricks to increase the heating area and heat storage capacity. , The refractory material traditionally used in the lattice body is clay bricks, and now alkaline refractory bricks are mostly used. The market competition in the float glass industry is fierce. In order to reduce production costs, most enterprises now use relatively cheap petroleum coke powder as fuel, but the fuel contains a certa...

AI Technical Summary

Problems solved by technology

The market competition in the float glass industry is fierce. In order to reduce production costs, most enterprises now use relatively cheap petroleum coke powder as fuel, but the fuel contains a certain amount of sulfur and vanadium, and the regenerator grid of the melting furnace also There are certain pores

After the glass melting furnace burns petroleum coke powder, the sulfur and vanadium in the flue gas will contact the regenerator lattice body, absorb and penetrate into the brick body of these regenerator lattice body through the pores, and generate heat with the regenerator lattice body brick body. Reaction, after the regenerator lattice brick body is chemically attacked by sulfur and vanadium, the physical and chemical properties will change greatly, and its strength, thermal shock resistance and chemical corrosion resistance will be greatly reduced, and then there will be peeling, bursting and other phenomena, especially It is because the grid holes are blocked after bursting and it is difficult to dredge, which leads to the reduction of the function of the regenerator, the increase of energy consumption, the life of the furnace is greatly reduced, and even the life of some furnaces can only reach about half of the design life.

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