Mechanically adjustable intake and exhaust diversion system of exhaust air heat countercurrent oxidation device

Abstract

The invention relates to a mechanically adjustable intake and exhaust diversion system of a exhaust air thermal countercurrent oxidation device, which comprises two expansion sections of intake and exhaust ports, two intake and exhaust cavities with one end open and a reaction chamber. Each intake and exhaust cavity is provided with a first deflector, and each intake and exhaust expansion section is provided with a second deflector, and a set of first deflectors is added on the outer upper wall of each intake and exhaust expansion section. Mechanical adjustment mechanism, a set of second mechanical adjustment mechanism is added on the outer side wall of each intake and exhaust cavity, and the rotation of the first deflector and the second deflector are respectively adjusted by the second mechanical adjustment mechanism and the first mechanical adjustment mechanism. Mechanism regulation control. The invention can flexibly adjust the inclination angle of the deflector through the mechanical adjustment mechanism under the actual working conditions with large fluctuations in the intake air volume, and has good adaptability to different air intake working conditions, ensuring the intake air volume of the reaction chamber and The temperature is evenly distributed, which improves the reliability of the device operation and the oxidation rate of the exhaust gas.

Description

technical field [0001] The invention provides a mechanically adjustable intake and exhaust diversion system of a exhaust air heat countercurrent oxidation device, which belongs to the technical field of coal mine ventilation gas utilization. Background technique [0002] In order to improve safety during coal mine production, a large amount of ventilation is usually used to discharge coal mine gas (called mine ventilation, Ventilation Air Methane, referred to as VAM). Methane is the main component of coal mine gas and many industrial waste gases. It is the second largest greenhouse gas after carbon dioxide, but it is also a high-quality and clean gas energy source. my country is a large coal-producing country, and more than 20 billion cubic meters of pure methane are emitted through the exhaust air of coal mines every year, which not only causes a huge waste of non-renewable energy resources, but also seriously pollutes the atmospheric environment. [0003] The volume conce...

AI Technical Summary

Problems solved by technology

However, there are still deficiencies in this technical solution. It is difficult for the diversion system to eliminate the flow peaks in the reaction chamber near the inlet and outlet of the oxidation device, and the angle of the deflector plate cannot be adjusted flexibly during the operation of the device. Poor adaptation to the actual working conditions, unable to maintain a good temperature balance in the cross-section of the heat storage body under the condition of a large difference in the intake air flow

In addition, the shape of the deflector adopts a straight plate, and it is directly hinged on the heat storage body of the reaction chamber, so it is easy to generate a flow dead angle at the root of the deflector, which reduces the flow rate in the local area of ​​the reaction chamber and affects the flow rate and temperature field of the cross section of the reaction chamber balanced

In addition, there is no inlet and exhaust diversion system of exhaust air thermal countercurrent oxidation device with relatively complete structure and performance.

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