Beam-type lime kiln waste heat power generation system and power generation method thereof

Abstract

The invention relates to a beam-type lime kiln waste heat power generation system and a power generation method thereof. The beam-type lime kiln waste heat power generation system comprises an evaporator and a gas-gas heater. The evaporator is connected with an oil cooler of a beam-type lime kiln in parallel. A heat transfer oil channel and a steam channel are included in the evaporator. The steamoutlet end of the steam channel is connected with a generator set through a pipeline, and the generator set is connected with a condenser. The condenser is connected with a condensed water channel ofthe gas-gas heater, and the other end of the condensed water channel is connected with the liquid inlet end of the steam channel. The liquid inlet end of the steam channel is further connected with awater replenishing system. A flue gas channel is further formed in the gas-gas heater. The two ends of the flue gas channel are connected with a flue gas outlet of the beam-type lime kiln and a bag-type dust collector separately. According to the beam-type lime kiln waste heat power generation system, waste heat of heat transfer oil and flue gas is used for generating electricity, and productioncost is reduced; and moreover, the structure is compact, the occupied space is small, the set can be put into use quickly, electricity generating efficiency is high and the beam-type lime kiln waste heat power generation system can be widely applied to various beam-type lime kiln waste heat recovery and waste heat power generation occasions.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a beam type lime kiln waste heat power generation system and a power generation method thereof. Background technique [0002] Beam type lime kiln is a new type of lime kiln production technology, mainly including kiln body, feeding system, combustion system, discharging system, air supply system and control system. The cooling zone of the kiln body is equipped with upper and lower layers of combustion beams. In order to ensure the non-deformation and life of the upper and lower combustion beams, the combustion beam with a cavity is equipped with a heat transfer oil cooling system, including connecting pipelines, heat transfer oil pumps and oil coolers. Although the high-temperature heat-conducting oil from the combustion beam is recovered by the heat of combustion-supporting air or gas, and part of the heat is recovered, most of the heat still needs to be cooled by the fan of the ...

AI Technical Summary

Problems solved by technology

Although the high-temperature heat-conducting oil from the combustion beam is recovered by the heat of combustion-supporting air or gas, and part of the heat is recovered, most of the heat still needs to be cooled by the fan of the oil cooler (air cooler), and the cooled heat-conducting oil enters the upper , The lower combustion beam is cooled, and such repeated cycles not only waste a lot of heat in vain, but also cause environmental heat pollution

However, after the flue gas from the lime kiln directly passes through the preheater, the temperature of the flue gas is still about 200°C. After entering the bag filter for dust removal, it is discharged into the chimney by the fan, which wastes a lot of waste heat.

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