Yellow phosphorus tail gas purification method and system
A yellow phosphorus tail gas and purification system technology, which is applied in combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., can solve problems such as boiler corrosion, high energy consumption, and poor purification effect, and achieve investment cost reduction and operation The effect of low energy consumption and low consumption
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[0020] Example 1
[0021] The method for purifying yellow phosphorus tail gas of the present invention includes the following steps: washing the yellow phosphorus tail gas with water at a temperature of 10°C to remove dust and part of the phosphorus element; and performing alkaline washing on the washed yellow phosphorus tail gas to remove SO 2 , H 2 S and other acid gases; the yellow phosphorus tail gas after alkali washing is passed into the first-stage oxidation solution for oxidation treatment to remove PH 3 , The first-stage oxidation solution is KMnO 4 , The mass concentration of the first-stage oxidation solution is 0.8%; the oxidized yellow phosphorus tail gas is neutralized with NaOH solution to obtain purified yellow phosphorus tail gas, and the mass concentration of the NaOH solution is 0.3%. The oxidized yellow phosphorus tail gas is subjected to a second-stage oxidation treatment to remove residual PH 3 , The second-stage oxidation solution used in the second-stage oxi...
Example Embodiment
[0027] Example 2
[0028] The difference between this embodiment and embodiment 1 is: the yellow phosphorus tail gas is washed with water at a temperature of 10°C to remove dust and part of the phosphorus element; the washed yellow phosphorus tail gas is alkali washed to remove SO 2 , H 2 S and other acid gases; the yellow phosphorus tail gas after alkali washing is passed into the first-stage oxidation solution for oxidation treatment to remove PH 3 , The first-stage oxidation solution is NaClO 3 , The mass concentration of the first-stage oxidation solution is 0.6%; the oxidized yellow phosphorus tail gas is neutralized with NaOH solution to obtain purified yellow phosphorus tail gas, and the mass concentration of the NaOH solution is 0.6%. The oxidized yellow phosphorus tail gas is subjected to a second-stage oxidation treatment to remove residual PH 3 , The second-stage oxidation solution used in the second-stage oxidation treatment is NaClO 3 , The mass concentration of the ox...
Example Embodiment
[0029] Example 3
[0030] The difference between this example and Example 1 is that the yellow phosphorus tail gas is washed with water at a temperature of 15°C to remove dust and part of the phosphorus element; the washed yellow phosphorus tail gas is alkali washed to remove SO 2 , H 2 S and other acid gases; the yellow phosphorus tail gas after alkali washing is passed into the first-stage oxidation solution for oxidation treatment to remove PH 3 , The first-stage oxidation solution is KClO 3 , The mass concentration of the first-stage oxidation solution is 0.6%; the oxidized yellow phosphorus tail gas is neutralized with NaOH solution to obtain purified yellow phosphorus tail gas, and the mass concentration of the NaOH solution is 0.6%. The oxidized yellow phosphorus tail gas is subjected to a second-stage oxidation treatment to remove residual PH 3 , The second-stage oxidation solution used in the second-stage oxidation treatment is KClO 3 , The mass concentration of the second...
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