Electric glass kiln and flame kiln are two common glass melting equipments, which have significant differences in heating methods, structures, application scenarios, energy consumption and environmental protection. The following is a detailed comparison of them:
1. Heating method
Electric glass kiln:
Use electric energy as heat source to melt glass by resistance heating or electrode heating.
Heating is uniform and temperature control is precise.
Flame kiln:
Use gas (such as natural gas, liquefied gas) or fuel as fuel to melt glass by high-temperature flame generated by combustion.
The heating method depends on the injection and combustion efficiency of the flame.
2. Structure and design
Electric glass kiln:
The structure is relatively simple, usually consisting of a furnace made of refractory materials and electric heating elements.
There is usually no complex combustion system in the furnace.
Flame kiln:
The structure is complex, including combustion chamber, flame channel, heat storage chamber and other parts.
The design of flame kiln usually includes horizontal flame kiln, horseshoe flame kiln, etc., and the flame circulates in the furnace to improve thermal efficiency.
3. Temperature control
Glass electric kiln:
High temperature control accuracy, suitable for processes that require precise temperature control (such as art glass, optical glass).
Fast heating speed, suitable for small batch production.
Flame kiln:
Temperature control is relatively difficult, affected by fuel combustion efficiency and flame distribution.
Suitable for large-scale continuous production, but sensitive to temperature fluctuations.
4. Energy consumption and environmental protection
Glass electric kiln
High energy consumption, high electricity cost, but high thermal efficiency.
No exhaust gas emissions, good environmental performance.
Flame kiln:
Low energy consumption, relatively low fuel cost, but thermal efficiency is affected by the combustion system.
Waste gas (such as CO₂, NOₓ, etc.) will be generated, and environmental protection equipment is required.
5. Application scenarios
Glass electric kiln:
Suitable for small-scale, high-precision production, such as art glass, laboratory glass, special glass, etc.
Commonly used in glass crafts, glass instruments, optical glass and other fields.
Flame kiln:
Suitable for large-scale continuous production, such as flat glass, bottle glass, architectural glass, etc.
Commonly used in industrial production, with large output, suitable for standardized products.
6. Investment and maintenance
Glass electric kiln:
The initial investment is low, the equipment structure is simple, and the maintenance cost is low.
The electric heating element needs to be replaced regularly.
Flame kiln:
The initial investment is high, the equipment structure is complex, and the maintenance cost is high.
The combustion system and refractory materials need to be maintained and replaced regularly.
7. Production efficiency
Glass electric kiln:
Suitable for small batch and multi-variety production, with high flexibility.
Production efficiency is limited by the electric heating power.
Flame kiln:
Suitable for large batch and single variety production, with high production efficiency.
Suitable for continuous and automated production.
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