High-concentration nitrogen oxide waste gas catalytic decomposing method
A technology for catalytic decomposition, nitrogen oxides, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., to achieve the effect of facilitating control, avoiding consumption, and facilitating heating temperature
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Embodiment 1
[0013] Embodiment 1: see figure 1 , a method for catalytic decomposition of high-concentration nitrogen oxide exhaust gas. The catalytic decomposition device used includes a housing 9, a cavity 5, an exhaust gas inlet 10, an exhaust gas outlet 7, and a catalyst feed port 6. The cavity is also provided with a catalyst The bed 1 and the catalyst bed are used to place the catalyst catalyst 3; an electric heating device 2 is also provided in the cavity, and the electric heating device can be provided with a control device for heating temperature and heating time, so as to facilitate the control of the catalytic reaction. The inner wall of the cavity 5 is provided with an insulating layer 8, and the insulating layer is ceramic insulating cotton. The material of the shell is stainless steel. The chamber body is cylindrical, and its lower part is provided with a cleaning chamber 11 for collecting scattered catalytic catalyst 3 and catalytic reaction products, so as to facilitate tim...
Embodiment 2
[0016] Embodiment 2: It differs from Embodiment 1 in that the exhaust gas inlet is arranged at the bottom of the catalytic decomposition device, and the exhaust gas outlet is arranged at the top of the catalytic decomposition device. Add 1kg of catalytic catalyst coke in its catalyst bed, start the electric heating device, set the temperature to be 1000°C, make it reach the set temperature and keep it. Take 1000ml concentrated HNO 3 (68%) reacts with excess red copper. When the reaction is carried out, the nitrogen oxide waste gas produced is passed into the waste gas inlet through the introduction pipe. From the observation window, the brown-red gas entering from the introduction can be seen. After passing through the catalyst bed, It becomes a colorless gas and is discharged from the exhaust gas outlet.
[0017] Through theoretical calculation: 1000ml concentrated HNO 3 (68%) react with excess copper, producing NO on average per hour 2 42.3L, a total of 169.2L was produce...
Embodiment 3
[0018] Embodiment 3: It differs from Embodiment 2 in that the catalytic catalyst is activated carbon. Start the electric heating device and set the temperature to 930°C.
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