SU1477697A1 - Regenerator of glass-melting furnace - Google Patents

Abstract

The invention relates to the building materials industry, in particular glass furnaces in the manufacture of container, varietal and other types of glass. The aim of the invention is to extend the service life of the nozzles of regenerators of glass melting furnaces. The regenerators have several chambers, with the lower part of the first chamber in the course of the flue gas movement being made of alternating at intervals in the horizontal and displaced in the vertical plane of the arches of refractories not interconnected. -0.6 of the total volume of the nozzle of this chamber, and the intervals between the rows of arches in the horizontal and vertical planes are 0.1-1.0 of the width of the arches. 3 il.

Description

The invention relates to flame furnaces, in particular regenerative, glass melting in the manufacture of glass containers, high-quality cookware.

The purpose of the invention is the extension of the service life.

Figure 1 shows the furnace and the regenerator, a general view; in Figure 2, the lower part of the nozzle of the hot chamber of the regenerator, section; figure 3 - the same cross section.

The regenerator of a glass furnace 1 with a shaft burner 2 contains a connecting chamber 3, a hot chamber 4 with a nozzle consisting of two parts: the bottom 5, made of independent refractory arches, and the top 6, consisting of refractories laid out by known methods,

cold chamber 7, walls 8 protecting the chambers and zircon roof 9. The regenerator is connected to a transfer valve and a chimney (not shown) with smoke ducts 10. Subpackage space 11 has an aperture 12 embedded in the normal mode of operation with refractories. The upper part 6 of the nozzle of the hot chamber rests on the discharge arches 13, the nozzle of the cold chamber 7 is placed on the arches 14. The refractories of the destroyed arches of the lower part 5 of the hot chamber are periodically removed through the opening 12 in the side walls.

Regenerator glass furnace works as follows.

In the heating cycle of the nozzles, flue gases from the fiery space

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Cooking furnace 1 through the mine burners 2 enters the connecting chamber 3, then - into the sub-nozzle space 11 of the hot chamber. The passage through the nozzle of the hot chamber, the flue gases heat it under the roof 9, turn around 180 and enter the cold chamber 7, heat the nozzle of this chamber and then go through the channel 10 to the transfer valve and the pipe. In the cycle of heating the air or cooling the nozzles, the air moves through the regenerator in reverse order, selects the accumulated heat and enters the combustion of the fuel into the fiery space of the furnace 1.

Example. A glass melting furnace with a cooking area of 60 m2 and a capacity of 150 tons of glass mass per day has regenerators with a volume of nozzles of 240 m3. The nozzles in the hot and cold chambers are respectively 64 and 56 m3 (one side). The height of the nozzles is 8 m, the cross-sectional area of the hot chamber is 8m2, cold 7 m2. The flue gas exhaust temperature at the entrance to the hot chamber is 1450 C. The volume of the lower part to the cages of the hot chamber is 28 m3, the nozzle arches are made of forsterite and have a width of 115 mm. The distance between the arches is 110-115 mm, between the rows 110-115 mm. The upper part of the nozzle is made of forsterite, mason according to the Kauper system (vertical channels), cell size 145. 145 mm. The nozzle of the cold chamber is made of chamotte by the Siemens system, the cell size is mm. The temperature of the flue gases at the level of the discharge arches of the hot chamber is 1150-1200 at the inlet to the cold chamber 900-960 ° C at the outlet 250-350 ° C. The air temperature at the exit from the hot chamber is 1250-1300 ° C. The volume of the lower part of the first in the course of the movement of flue gases is 0.4-0.6 of the total volume of the nozzle of this chamber, and the intervals between the rows of arches in the horizontal and ver. the tical plane is equal and is 0.1-1.0 of the width of the arches.

The service life of the cold chamber nozzles is 8-14 years, the upper part of the hot chamber is 4-6 years. Partial destruction of the first arches in the course of the flue gas movement

parts of a hot camera maybe a church 2-2.5 goals. In general, the nozzle is able to work 4-4.5 years, i.e. term commensurate with the campaign of the furnace.

The advantages of the proposed regenerator design in comparison with the known ones are a large volume of nozzles, and hence a deeper utilization of the heat of flue gases, on smaller areas, a higher slimness ratio, and hence the efficiency of using all nozzle refractories, a longer service life the changing capacity of the refractory materials of the nozzle, and hence the consistently high level of air heating throughout the campaign. The latter is achieved by the fact that sedimenting on the refractories of the hot chamber the charge dust and the condensation products of alkali vapors contained in the flue gases melt and flow into the sub-head space. If, in known regenerators, cleaning of the nozzles is carried out by means of special periodic heating, since the melt is prevented from moving by the decreasing temperature of the refractory materials of the nozzle. flue gas cleaning, i.e. reducing emissions of harmful substances into the environment.

Claims (1)

Invention Formula A glass furnace regenerator containing successively located chambers with refractory nozzles, characterized in that, in order to prolong the service life, the lower part of the first chamber along the flue gas movement in a volume of 0.4-0.6 of the nozzle volume is made of alternating intervals in the horizontal and vertically displaced arches of refractories supported on the walls of the regenerator, the intervals between the rows of arches in the horizontal and vertical planes being equal to 0.6-1.0 of the width of the arches. i gsch 21 U VCvXs WC one -