SU1659364A1 - Glass making bath furnace - Google Patents

Abstract

The invention relates to the glass industry, in particular to glass furnaces for the manufacture of container, varietal, medical and other types of glass. The purpose of the invention is to increase productivity, improve the quality of glass and fuel economy. A glass melting bath furnace contains a cooking basin with a transverse bottom threshold and connected to the duct with a working part. The bottom of the cooking basin on the side of the flowing wall adjacent to the transverse bottom threshold of a 0.2-0.9 length zone of the cooking basin enclosed between the threshold and the flow wall is made across the entire width of the cooking pool with a step height of 0.3-0, 7 height of the entrance section of the duct 2 Il., 1 tab.

Description

The invention relates to the glass industry, in particular, to glass furnaces for the manufacture of container, varietal, medical and other types of glass.

The purpose of the invention is to increase productivity, improve glass quality and save fuel.

FIG. 1 depicts a glass bath tub stove; figure 2 is the same longitudinal section.

The glass-melting bath furnace contains a cooking basin 1 formed by the bottom 2 and walls 3. At the bottom 2 of the cooking basin 1, a transverse bottom threshold 4 is installed. The cooking basin 1 is connected by a channel 5 to a working part (not shown in the drawing). The cooking basin 1 is heated by means of burners 6 with gaseous (or liquid) fuel. Bottom 2 of the cooking basin 1 on the side of the duct 5 adjacent to the transverse bottom threshold 4

The length of 0.2-0.9 between the threshold 4 and the flow wall 7, the zone of the cooking basin 1, is stepped over the entire width of the basin with a height of 8 which is 0.3-0.7 of the height of the inlet section .

The walls 3 of the cooking basin 1 and the transverse threshold 4 are made of highly resistant fused cast baddelyite-corundum refractories (bakor-33, bakor-41). Bottom 2 is made of fireclay bottom bars lined over the entire area of the cooking basin 1, including their mating areas with a transverse bottom threshold 4, tiles made of fused cast refractory material. One of the embodiments of the invention may be the use of a glass-melting bath furnace with a cooking basin equipped with multi-layer thermal insulation of the bottom.

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Glass bath furnace works as follows.

Using mechanical loaders (not shown) through the loading pocket 9 into the cooking basin 1 enter 10 loads of charge and glass, the penetration of which is carried out due to thermal energy from burning fuel in the burner 6, and due to contact of the charge from below with the molten glass 11, In the process of penetration, a charge of 10 charge and glass is formed of the cooking foam 12. With the normal organization of the cooking of glass, a clean mirror glass portion forms on the surface of the melt adjacent to the flow wall. The freshly welded direct mass of the direct branch 14 of the convection bulk flow cycle is directed to the granular wall 15, lowered and then, with the reverse branch of the bulk cycle 16, the glass mass flows to the bottom threshold 4. As the cit moves, the bulkhead 15 goes to the bulk wall 15 and to the threshold 4 a preliminary averaging the melt in the volume of the zone of the cooking basin 1 located up to the threshold 4. In the region of the threshold 4 the flow of glass melts into the stream 17 reflected back to the cooking zone and to the stream 18 passing over the threshold 4 into the At the threshold 4 and the flow wall 7, the zone of clarification and homogenization of the cooking basin 1. From the flow 18, a direct flow 19 of the development cycle of convection flows of the glass melt, which flows through the flow 5 to the glass-forming machines (not shown), is formed. In this case, due to the reflection of the tubine part of the flow 18 from the vertical surface facing the flow path 5 of the step 8, an additional cycle 20 of the glass mass flows is formed. Due to this, the convection circulation of the glass mass is more developed. This contributes to the averaging of the melt by chemical composition and temperature uniformity. At the same time, the likelihood of the glass mass contained in the volume passing over the threshold 4 of the glass mass of refractory foreign inclusions passing into the production flow is substantially reduced. The latter, due to a higher density compared to the melt, being in the zone of action of an additional cycle of 20 glass-mass flows, are deposited on the bottom. This ensures that the flow of glass-mass 19, purified from foreign inclusions, enters the volume of the stream 19 entering the production. As a result, by organizing an additional cycle 20 of glass melt flows in the zone of the cooking basin 1, located directly below threshold 4, the productivity of the glass melting furnace in the welded glass melt and glass forming equipment is improved and the quality of glass products is improved. In addition, mainly due to more efficient use. the glass mass decreases the specific heat consumption for the process

Optimal with the position of providing favorable conditions for intensifying the process of melting, increasing productivity, improving product quality and reducing the specific heat consumption in the process are

5 constructive options in which the length of the zone from the threshold to the step is 0.2-0.9 of the length of the cooking zone zone enclosed between the bottom transverse threshold and the flow wall, and the height of the stu0 is from 0.3 to 0.7 the height of the entrance section of the duct (Table 1). With these design parameters of the glass-melting furnace, an increase in the cooking ability of the furnace by an average of 12% is provided, an increase in the productivity of glass-forming lines by 10%, an improvement in the quality of the products, manifested in an increase in the yield of the production by an average of 5% with

0 decrease in specific heat consumption per process by 7-10%.

Example. The total length of the cooking basin along the longitudinal axis of the furnace from the end of the drywall to the end of the flowing

5 walls is equal to 14400 mm, width of the pool is equal to 6400 mm. The distance from the end syphonic wall to the transverse bottom threshold is 10,500 mm. The width of the transverse threshold along its entire length is 500 mm. The length of the sections of the cooking basin located before and after the transverse threshold is 10,500 mm and 3,400 mm.

Cooking basin depth 1100 mm.

5 The length, width, and depth of the rectangular pipe adjoining the transverse threshold on the flow side are 3000 mm, 6400 mm, and 1100 mm, respectively. Number of ducts 3 pcs. Input width and height

The duct sections, respectively, are 600 mm and 260.0 mm. The ratio of the length of a rectangular with a cat to the length of the zone of the cooking basin between the threshold and 3000 mm

five

flowing wall

0.882. From 3400 mm the depth of the depth when the bridge to the height of the input

section of the duct ogn m 0,38. Manufactured dc MM

the duration of the welded glass melted glass furnace bath, made

in accordance with the invention, it is 73.5 tons / day, which is 9.6% higher than the productivity of a glass melting furnace of known design. With a constant furnace performance on welded glass melt at the level of 74.0 tons / day, fuel consumption is reduced by 8% compared with the known solution.

The 8 working conditions of the glass-melting furnace are more stable and efficient work of glass-forming automata in the production of bleached glass bottles with an increase in the yield of suitable products by an average of 5%.

Claims (1)

The invention The glass-melting bath furnace containing a cooking basin equipped with a transverse bottom threshold with a connecting duct with a discharge part characterized in that, in order to increase productivity, improve glass quality and save fuel, the bottom of the cooking basin between the threshold and the flow wall is stepped with a step height of 0 , 3-0.7 is the height of the entrance section of the duct, and the length of the zone from the threshold to the step is 0.2-0.9 the length of the zone from the threshold to the flow wall