Ventilated gas oxidizing system capable of recovering heat energy

Abstract

The invention relates to a ventilated gas oxidizing system capable of recovering heat energy, which belongs to the technical field of the mine gas governing and emission reduction, and comprises an air inlet pipeline (1), an airflow guiding devices (2), an airflow guiding device (12), an oxidizing device, a smoke exhausting pipeline (5) and a chimney (12) which are connected with each other through pipelines, wherein the oxidizing device comprises an oxidizing chamber (9), a ceramic heat accumulation material (10) and a rectifying chamber (11), an external heat insulating layer (6), a mode-wall heat exchanging surface (7) and an internal heat insulating layer (8) are sequentially arranged on the outer wall of the oxidizing chamber (9) from outside to inside, the oxidizing chamber (9) is also a surplus heat recycling device, the heat absorbed by the mode-wall heat exchanging surface (7) accounts for 0 to 80 percent of total heat released by the oxidization of ventilated gas methanol, the external eat insulating layer (6) is used for further reducing the heat of the peripheral environment radiated by the oxidizing device, and the internal heat insulating layer (8) is used for controlling the heat absorbed by the mode-wall heat exchanging surface (7). The ventilated gas oxidizing system capable of recovering heat energy has the advantages of strong adaptability of ventilated gas methanol concentration, low self-maintained concentration, high heat efficiency, and the like.

Description

technical field [0001] The invention belongs to the technical field of coal mine gas control and emission reduction, and in particular relates to a coal mine ventilated gas regenerative oxidation system capable of recovering heat energy, which recovers heat energy without affecting the operation of the ventilated gas oxidation device, and can produce superheated steam, steam or hot water. Background technique [0002] The previous ventilated gas regenerative oxidation system was not equipped with heat energy recovery equipment, and the heat generated after methane oxidation was discharged into the atmosphere with the flue gas, resulting in a large amount of waste of energy. At present, some ventilated gas regenerative oxidation systems are equipped with heat energy recovery equipment. The specific method is to arrange the heating surface of the heat exchanger for heat recovery inside the ceramic heat storage material. Although the structure of this heat exchanger embedded i...

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Problems solved by technology

[0003] The object of the present invention is to provide a ventilated gas oxidation system capable of efficiently recovering heat energy, which can not only keep the heat recovery rate of the ventilated gas oxidation system over 95%, the methane decomposition efficiency higher than 95%, and the continuous and stable operation of the oxidation device, but also solve the problem of Problems existing in the existing ventilated gas oxidation system, such as the poor adaptability of the heating surface layout to the methane concentration, the self-sustaining concentration of the oxidation device, the poor economy, and the complex structure and difficult maintenance of the heating surface, etc.

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