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Vertical structure oxidation bed of mine ventilation air methane gas thermal oxidation device

An oxidation bed and wind gas technology, applied in safety devices, mining equipment, earthwork drilling and mining, etc., can solve problems such as difficult to meet requirements, achieve the effects of prolonging the airflow reversing period, improving stability, and reducing lateral backlog stress

Inactive Publication Date: 2012-07-18
SHANDONG UNIV OF TECH
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  • Application Information

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Problems solved by technology

If the oxidation bed uses a honeycomb ceramic, it is difficult to meet the requirements

Method used

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  • Vertical structure oxidation bed of mine ventilation air methane gas thermal oxidation device
  • Vertical structure oxidation bed of mine ventilation air methane gas thermal oxidation device
  • Vertical structure oxidation bed of mine ventilation air methane gas thermal oxidation device

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Embodiment Construction

[0018] exist Figure 1-4 In the shown embodiment: the oxidation bed is composed of three kinds of honeycomb ceramics 1 arranged and stacked. The honeycomb ceramics 1 arranged in the middle of the oxidation bed adopts a honeycomb ceramic with a large equivalent diameter of pores, a high opening rate, and high temperature resistance, and the pores 2 are positive six. The two-layer honeycomb ceramics located on the upper and lower sides of the honeycomb ceramics 1 in the middle of the oxidation bed have strong thermal shock resistance, and take the middle of the oxidation bed as a plane of symmetry, and the equivalent diameter of the pores and the open porosity decrease stepwise from the inside to the outside. Hole 2 is in the shape of a regular quadrilateral; grooves 3 in the same direction are provided between the bonding surfaces of the same layer adjacent to the upper and lower honeycomb ceramics 1, the depth of groove 3 is 2mm, and the right angles of groove 3 are in the shap...

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Abstract

The invention relates to a vertical structure oxidation bed of mine ventilation air gas thermal oxidation device, composed of a plurality of honeycomb ceramics by arrangement and superposition. The invention is characterized in that: the oxidation bed is composed of multiple honeycomb ceramics by arrangement and superposition, the honeycomb ceramic arranged at the middle part of the oxidation bedadopts honeycomb ceramic with large hole equivalent diameter, high aperture ratio and high temperature resistance, the honeycomb ceramic arranged at the upper and lower sides of the honeycomb ceramicat the middle part of the oxidation bed is strong in heat shock resistance capacity, and the middle part of the oxidation bed is taken as symmetry plane, hole equivalent diameter and aperture ratios are reduced in stepped manner from inside to outside, slots in the same direction are arranged between the joint surfaces in the same layer of the upper and lower adjacent honeycomb ceramics, direction of slots between joint surfaces in the same layer of the upper and lower adjacent honeycomb ceramics are vertical mutually, and a thermal expansion buffer layer is arranged between adjacent honeycomb ceramics in the same layer. The oxidation bed has the advantages of low flow resistance, good running stability and long service life.

Description

technical field [0001] The invention relates to a vertical structure oxidation bed of a mine ventilation gas thermal oxidation device, and belongs to the technical field of ultra-low concentration methane thermal countercurrent oxidation. Background technique [0002] The low concentration of exhaust gas in coal mines is the main problem restricting its utilization. At present, the effective utilization method is to adopt Thermal Flow Reversal Reactor (TFRR) technology. The regenerative oxidation bed is a very critical component of the thermal countercurrent oxidation technology of coal mine exhaust gas. Heating to the temperature at which methane can be oxidized by itself; the oxidized hot gas transfers heat to the oxidation bed for storage during the flow process, so as to heat the exhaust gas entering from the other end of the oxidation bed after the gas flow is reversed, so that the oxidation device relies on The heat released by the oxidation of exhaust methane maintai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/00
Inventor 刘永启刘瑞祥高振强王延遐李宗立李冬梅郑斌孟建尤彦彦
Owner SHANDONG UNIV OF TECH
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