The main technical overview of the target kiln
(1) Based on scientific calculations and referring to the production and use of the world's advanced melting furnaces of the same type, the main geometric dimensions of the furnace are determined.
(2) Adopt the world's more advanced American Mork Company's second-generation front face hanging wall (45 degree inclination angle).
(3) The feeding pool (2.3×7.6m) is enlarged and the pre-melting effect is increased.
(4) The distance from the center line of 1# small furnace to the front wall is increased to 3.4m, realizing rapid melting of batch materials after entering the kiln.
(5) At the end, the distance from the center line of the small furnace to the neck is lengthened to 16.75m, which improves the quality of the molten glass.
(6) Adopting a connected regenerator, heightening the grid body to 8.15m, and enhancing the energy-saving effect.
(7) The use of hanging flat and narrow necks separates the melting part from the cooling part, ensuring that there will be no negative pressure in the cooling part, stabilizing the temperature of the flow channel, and reducing the influence of airflow in the melting part.
(8) The entire furnace has achieved full thermal insulation when using domestic refractory materials (except for L-shaped hanging walls, card-neck hanging flat anchors, and corner bricks).
(9) Adopt integral pool wall bricks, pave the bottom of the pool, and the whole kiln pool is 1.22m deep.
(10) The use of a new type of superstructure, the breast wall and the large chute are integrated, the upper and lower gap bricks are eliminated, and the sealing performance is good.
(11) The cooling part adopts dilution air to achieve temperature and pressure regulation, and realize the regulation of glass forming temperature.
(12) The top of the regenerator is separated from the wall, which solves the problem of brick structure expansion during the baking kiln and enhances the stability.
(13) Adopt the branch flue to enter the air, and the air and exhaust gas are changed in a centralized manner.
(14) Take air from the bottom of the kiln to increase the temperature of the combustion air.
(15) The brick structure at the bottom of the kiln adopts three-layer steel beams to bear the uniform load of the kiln pool and the uneven load of the upper structure of the pool wall on the main beam and the secondary beam respectively, ensuring good overall stability.
(16) For the overall furnace operation, for the first time, the INFI-90 distributed control system newly launched by American Bailey Company was used to realize the computer control of the furnace parameters.
①Flow channel control accuracy ±1℃;
②Kiln pressure control accuracy ±0.06mmH20 column;
③Liquid level control accuracy ±0. 1mm;
④Single-point temperature control at the top of the melting part is ±5℃;
⑤ Time control of fire change process<45s
(17) Some advanced auxiliary equipment is adopted on the kiln, which is very beneficial to melting operation, energy saving and consumption reduction.
①Install industrial TV to monitor the situation in the kiln;
②Install a vertical stirrer to improve the glass quality;
③Using LXQ-1 oil gun to improve the combustion effect;
④Apply solid material water bag to reduce partial material.
(18) Main target value of the furnace
①Melting rate: 2.5 t/m2.d;
②Energy consumption: 1650kcal/kg molten glass;
③Total yield: 83%;
④ Furnace life: 5 years;
⑤Glass quality: 50% mirrors, 70% automotive glass, 100% architectural glass.
(19) Actual completion of the main technical indicators of the furnace
①Production capacity: 380~390t/d;
②Melting rate: 2.381~2.45t/m2.d;
③Heat consumption: 1700~1800kcal/kg molten glass;
④ Kiln age: it has reached 4.7 years and is expected to reach 5.5 years;
⑤ Fuel consumption: 70~73t/d (unstable oil quality).
