New method for smelting glass liquid through solid-gas immersion combustion

Abstract

The invention discloses a new method for smelting glass liquid through solid-gas immersion combustion. The new method is technically characterized by comprising the following steps: oxidant gas is injected into a solid fuel rod (11) continuously fed into the glass liquid to realize oxidative combustion through a gas spray pipe (6) inserted into the glass liquid and capable of continuously obtaining compensation after being subjected to erosive wear, a combustion cavity (12) is formed in the glass liquid, produced high-temperature gas is used for stirring the glass liquid, and a large amount of heat is transferred to the glass liquid and a mixture, so the glass is quickly smelted and homogenized; the gas spray pipe (6) and a compensation pipe (7) are jointed on the premise that a gas source is cut off through a combined jointing device, and are pushed into a furnace tank after the gas spray pipe (6) is subjected to erosive wear to a certain extent to compensate the worn part and keep the position of a nozzle of the gas spray pipe (6) in the glass liquid unchanged, so that stable combustion of flame in the glass liquid is kept, and meanwhile long service life of the gas spray pipe (6) is guaranteed.

Description

technical field [0001] Glass melting process. Background technique [0002] The melting of molten glass is the most important and core process in the glass manufacturing process. Its advantages and disadvantages play a decisive role in environmental protection, energy saving and emission reduction, and the manufacturing cost of glass. [0003] At present, the continuous melting of molten glass with fuel all adopts the method of surface heating. It has several disadvantages that are difficult to overcome: first, the thermal efficiency is low, and its heat loss accounts for about 70% to 80% of the total heat consumption, and the heat consumption per kilogram of glass liquid is above 1800 kcal; second, the melting rate is low, Generally, it is below 1.5 tons / square meter per day; the third is that the gas temperature in the combustion space of the melting pool is high and the flow rate is high, which erodes the refractory material of the kiln faster and reduces the service li...

AI Technical Summary

Problems solved by technology

It has several disadvantages that are difficult to overcome: first, the thermal efficiency is low, and its heat loss accounts for about 70% to 80% of the total heat consumption, and the heat consumption per kilogram of glass liquid is above 1800 kcal; second, the melting rate is low, Generally below 1.5 tons/square meter per day; third, the gas temperature in the combustion space of the melting pool is high and the flow rate is high, which erodes the refractory material of the kiln faster and reduces the service life of the kiln

[0007] The reason is that this method of immersion combustion has problems that are difficult to solve

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