Ventilated gas oxidizing system capable of recovering heat energy

A technology of ventilation gas and oxidation system, which is applied in the directions of heat generation by exothermic chemical reaction, heat generation by non-combustion exothermic chemical reaction, heating fuel, etc. Maintenance difficulties and other problems, to achieve the effects of strong adaptability, reduced wall heat dissipation, and high thermal efficiency

CN102337984BActive Publication Date: 2012-12-19INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-12-19

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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.
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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...

Examples

Embodiment 1

[0018] figure 1 It is the first embodiment of the present invention. The ventilation gas enters the ceramic heat storage material 10 for preheating through the air inlet pipe 1, the blower 2, the three-way reversing valve A3, and the rectifying chamber 11, and then enters the oxidation chamber 9 for oxidative decomposition (airflow flow The direction is indicated by the solid arrow in the figure). Part of the heat released after methane decomposition and oxidation passes through the internal insulation layer 8 and is absorbed by the heat exchange surface 7 of the model wall; this part of heat is related to the concentration of methane in the ventilation gas, accounting for 0% to 80% of the total heat released by the oxidation of methane in the ventilation gas %; In the outer wall of the oxidation chamber 9 and the inner side of the mode wall heat exchange surface 7, an internal heat insulation layer 8 is arranged, which is made of a refractory material, and is used to control ...

Embodiment 2

[0020] figure 2 It is the second embodiment of the present invention. The ventilation gas enters the ceramic heat storage material 10 to preheat through the air inlet pipe 1, the three-way reversing valve A3, and the rectifying chamber 11, and then enters the oxidation chamber 9 for oxidative decomposition (the flow direction of the airflow is shown in the figure indicated by the solid arrow). Part of the heat released after methane decomposition and oxidation passes through the internal insulation layer 8 and is absorbed by the heat exchange surface 7 of the model wall; this part of heat is related to the concentration of methane in the ventilation gas, accounting for 0% to 80% of the total heat released by the oxidation of methane in the ventilation gas %; on the outer wall of the oxidation chamber 9 and the inner side of the mode wall heat exchange surface 7, an internal heat insulation layer 8 is set, which is made of refractory material, and is used to control the heat a...