Air and gas double-heat-accumulation combustion device

Abstract

An air and gas double-heat-accumulation combustion device comprises an air heat accumulation case and a gas heat accumulation case. An air inlet and an air nozzle brick are arranged on the air heat accumulation case, and a gas inlet and a gas nozzle brick are arranged on the gas heat accumulation case; at least two air heat accumulation cavities are arranged inside the air heat accumulation case, the top of one of each two adjacent air heat accumulation cavities is higher / lower than that of the other air heat accumulation cavity, each air heat accumulation cavity with the top higher / lower than that of the corresponding adjacent air heat accumulation cavity is close to the air inlet while the corresponding adjacent air heat accumulation cavity is close to the air nozzle brick, and a heat accumulator is arranged in each air heat accumulation cavity; and at least two gas heat accumulation cavities are arranged inside the gas heat accumulation case, the top of one of each two adjacent gas heat accumulation cavities is higher / lower than that of the other gas heat accumulation cavity, each gas heat accumulation cavity with the top higher / lower than that of the corresponding adjacent gas heat accumulation cavity is close to the gas inlet while the corresponding adjacent gas heat accumulation cavity is close to the gas nozzle brick, and a heat accumulator is arranged in each gas heat accumulation cavity. The air and gas double-heat-accumulation combustion device has the advantages that short circuit of gas flow can be prevented even under the condition that the heat accumulators contract or are locally damaged, heat accumulation and heat exchange capacities of the heat accumulators are kept, and the service life of each heat accumulator can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of burners, in particular to an air gas double heat storage combustion device. Background technique [0002] Dual regenerative combustion technology can preheat both air and gas to above 1000°C, resulting in a higher theoretical combustion temperature, thereby realizing the direct application of low-calorific value gas fuels in thermal equipment such as high-temperature furnaces; regenerative combustion technology It can also reduce the exhaust gas temperature to below 150°C, realize the ultimate recovery of the waste heat of the flue gas, and significantly improve the fuel utilization rate. Therefore, the double regenerative combustion technology has a wide range of promotion and application in industries such as iron and steel, non-ferrous metals, and machining. [0003] In the promotion and application of dual regenerative combustion technology, there are still some shortcomings in the dual regenerative ...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to propose an air gas dual heat storage combustion device, which can effectively solve the problems of air flow deviation and air short circuit in the existing double heat storage combustion device, and improve the efficiency of the heat storage body. Utilization and extended service life

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