Photocatalytic reactor for increasing photocatalytic degradation rate of methane and application of photocatalytic reactor
A technology of photocatalytic reactor and degradation rate, applied in chemical instruments and methods, chemical/physical/physicochemical processes of energy application, separation of dispersed particles, etc., can solve the problems of low use of ultraviolet lamps and low degradation rate of methane, etc. Achieve the effect of improving the photocatalytic degradation rate of methane, low conversion cost and simple device
Inactive Publication Date: 2015-03-18
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology
[0008] One of the purposes of the present invention is to solve the above-mentioned process of photocatalytic decomposition of methane with low continuous light methane degradation rate, and under frequent intermittent light, although the methane degradation rate is high, frequent intermittent light makes the service life of the ultraviolet lamp low. Provide a photocatalytic reactor that can increase the photocatalytic degradation rate of methane. When the photocatalytic reactor is used for photocatalytic degradation of methane, it can achieve a high degradation rate of methane under the continuous illumination of a low-pressure mercury lamp, thereby avoiding intermittent illumination During the process, the technical problem of low service life of the UV lamp due to frequent intermittent light
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Embodiment 1
[0051] A photocatalytic reactor that can increase the rate of photocatalytic degradation of methane. Figure 1a As shown, a reactor body 4 with an upper opening, a cover 11 of the reactor, an ultraviolet light source 5, and a quartz coil 3 are included;
[0052] The reactor body 4 is cylindrical, with an opening on the upper part, made of heat-resistant glass, with an inner diameter D=10cm, a height H=32cm, and an effective volume of about 2.51L;
[0053] The reactor cover plate 11 matches the shape of the upper opening of the reactor body 4, and can be sealed and movably connected with the reactor body 4, and the material is frosted glass;
[0054] The reactor cover plate 11 is provided with a gas outlet 1, and a d=0.6cm 90° bend pipe is provided on the gas outlet 1, and a latex tube with good elasticity is connected to the gas to detect the concentration of methane in the gas;
[0055] The quartz coil 3 is vertically installed inside the reactor body 4. One end of the quartz coil 3 is...
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The invention discloses a photocatalytic reactor for increasing the photocatalytic degradation rate of methane. The photocatalytic reactor comprises a reactor body with an upper opening, a reactor cover plate, an ultraviolet light source and a quartz coil capable of loading a photocatalyst for photocatalytic degradation of methane, wherein the reactor cover plate can be movably connected with the upper opening of the reactor body in a sealing way, the bottom of the reactor body with the upper opening is provided with an air inlet, and the reactor cover plate is provided with an air outlet; the quartz coil is vertically arranged inside the reactor body, one end of the quartz coil is connected with a water inlet arranged in the side wall of the reactor body, and the other end of the quartz coil is connected with a water outlet arranged in the side wall of the reactor body; the ultraviolet light source is arranged inside the reactor body, and the quartz coil is used for surrounding the ultraviolet light source. The photocatalytic reactor can realize the methane conversion ratio up to 71.5mg / (m<3>.min) under the condition of continuous light and has the characteristics of high catalytic efficiency and low conversion cost.
Description
technical field [0001] The invention relates to a photocatalytic reactor for improving the photocatalytic degradation rate of methane and its application in photocatalytic methane degradation. Background technique [0002] Methane is a potent greenhouse gas with high global warming potential (GWP). 3 The dissociation energy of the —H bond is 435 kJ / mol, and its chemical properties are very stable and difficult to transform. [0003] Photocatalytic technology is a new technology developed in the 1970s, which can effectively and completely remove greenhouse gases. Photocatalytic technology generally utilizes ultraviolet light source to irradiate semiconductor catalysts with photocatalytic activity, such as titanium dioxide (TiO 2 ) etc., where TiO 2 It has become an ideal photocatalytic material due to its non-toxicity, good chemical stability, strong oxidation ability and no secondary pollution. TiO 2 The principle of photocatalytic degradation of methane under ultraviol...
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IPC IPC(8): B01J19/12B01D53/86B01D53/72
Inventor 王罗春武文燕李亭陈飞张卓磊
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER