Preparation method of pendimethalin and application of wastewater generated by preparation method to treatment of chlorpyrifos wastewater
A technology of pendimethalin and pentylamine, which is applied in water/sewage treatment, natural water treatment, preparation of organic compounds, etc., can solve the problems of increasing production costs of enterprises, increasing production costs, and excessive discharge of three wastes, and achieves improvement The effect of comprehensive benefits, improving product quality and reducing production costs
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[0057] Example 1
[0058] Unless otherwise specified, the content of each component used below is a mass percentage.
[0059] S1. Synthetic Nitrification
[0060] Such as figure 1 As shown, using pentylamine as a raw material, pentylamine reacts with dilute nitric acid to form a quaternary ammonium salt. In this embodiment, pentylamine was put into a salt-forming kettle and dissolved in methanol, where the molar ratio of pentylamine to methanol was 1:1200. After being fully dissolved, it reacts with dilute nitric acid to form a quaternary ammonium salt, in which the molar ratio of pentylamine to dilute nitric acid is 1:1.5.
[0061] The quaternary ammonium salt reacts with concentrated nitric acid to form pendimethalin nitrated oil phase. In this embodiment, the generated quaternary ammonium salt is added to concentrated nitric acid under the protection of nitrogen for nitration reaction to generate pendimethalin nitrated oil phase, wherein the molar ratio of amylamine to concentrat...
Example Embodiment
[0070] Example 2
[0071] S1. Synthetic Nitrification
[0072] Such as figure 1 As shown, using pentylamine as a raw material, pentylamine reacts with dilute nitric acid to form a quaternary ammonium salt. In this embodiment, pentylamine is put into the salt-forming kettle and dissolved in dichloroethane, wherein the molar ratio of pentylamine to dichloroethane is 1:60. After being fully dissolved, it reacts with dilute nitric acid to form a quaternary ammonium salt, wherein the molar ratio of pentylamine to dilute nitric acid is 1:0.8.
[0073] The quaternary ammonium salt reacts with concentrated nitric acid to form pendimethalin nitrated oil phase. In this embodiment, the generated quaternary ammonium salt is added to concentrated nitric acid under the protection of nitrogen for nitration reaction to generate pendimethalin nitrated oil phase, wherein the molar ratio of amylamine to concentrated nitric acid is 1:1.6. After the nitrification is completed, the nitrified oil phase ...
Example Embodiment
[0082] Example 3
[0083] S1. Synthetic Nitrification
[0084] Such as figure 1 As shown, using pentylamine as a raw material, pentylamine reacts with dilute nitric acid to form a quaternary ammonium salt. In this embodiment, pentylamine was put into a salt-forming kettle and dissolved in chloroform, where the molar ratio of pentylamine to chloroform was 1:40. After being fully dissolved, it reacts with dilute nitric acid to form a quaternary ammonium salt, in which the molar ratio of pentylamine to dilute nitric acid is 1:0.6.
[0085] The quaternary ammonium salt reacts with concentrated nitric acid to form pendimethalin nitrated oil phase. In this embodiment, the generated quaternary ammonium salt is added to concentrated nitric acid under the protection of nitrogen for nitration reaction to generate pendimethalin nitrated oil phase, wherein the molar ratio of amylamine to concentrated nitric acid is 1:1.2. After the nitrification is completed, the nitrified oil phase of pendim...
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