An energy-saving trolley kiln and its waste heat utilization method

Abstract

The invention discloses an energy-saving trolley kiln and a waste heat utilization method, belonging to the technical field of high-temperature kiln equipment. The energy-saving trolley kiln includes a kiln (1) and a drying room (2): the kiln (1) has more than two Connected kiln bodies; every two adjacent kiln bodies communicate with each other through the first hot air pipe (3) and the underground hot air duct (4), and the kiln body and the drying room (2) pass through the second hot air pipe (5) can be connected; the underground hot air duct (4) can be communicated with the outside world through the straight smoke exhaust duct (6), the second hot air duct (5) can be communicated with the straight smoke exhaust duct (6), the first hot air The pipe (3) communicates with the straight smoke exhaust duct (6). The waste heat from kiln combustion is not discharged out of the kiln, but the waste heat discharged from the flue is still used in the kiln roasting and drying process, and the waste heat from combustion is used for the purpose of roasting itself, which reduces the temperature of exhaust smoke and heat It reduces the extra energy consumption in the drying process and achieves the effect of waste heat utilization, which can be applied to all industrial kilns.

Description

technical field [0001] The invention relates to high-temperature kiln equipment, in particular to a full-effect mutual-aid intermittent energy-saving trolley kiln and a waste heat utilization method. Background technique [0002] In recent years, with the further development of energy-saving work, various new types of advanced energy-saving furnaces have become more and more perfect, and the use of high-quality insulation materials such as new refractory fibers has significantly reduced the heat dissipation loss of the furnace. The use of advanced combustion devices strengthens the combustion, reduces the amount of incomplete combustion, and the air-fuel ratio tends to be reasonable. However, the progress in reducing the heat loss of the exhaust gas and recovering the waste heat of the flue gas is still not fast. In order to further improve the thermal efficiency of the kiln and achieve the purpose of saving energy and reducing consumption, the recovery of waste heat from fl...

AI Technical Summary

Problems solved by technology

The high-grade fuel means that the cost of roasting is increased. The intermittent trolley guided flame kiln is integrated with a single kiln. During the roasting process, a large amount of heat energy is discharged to the air space through the flue to the chimney.

After the kiln fire is stopped, the heat stored in the loaded objects baked in the kiln is naturally released to the atmospheric space or discharged to the atmospheric space through the flue chimney, so that a lot of heat energy is wasted

The waste heat utilization in the prior art is to lead the waste heat out of the kiln for waste heat and heating and drying; or to set up a waste heat recovery and utilization system outside the kiln, such as a waste heat boiler, water heater or waste water tank, etc., but these methods are not in essence. Can use combustion waste heat for roasting purpose itself

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