A preparation process of electronic grade hydrogen fluoride
A hydrogen fluoride, electronic-grade technology, applied in hydrogen fluoride, fluorine/hydrogen fluoride, chemical instruments and methods, etc., can solve problems such as increased processing difficulty and cost, performance impact, and fluorine gas is highly toxic
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[0032] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0033] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, an electronic grade hydrogen fluoride preparation process is characterized in that it includes a transpiration cycle oxidation reaction process, a circulating fluidized bed rectification process, and a washing absorption condensation process.
[0034] Step 1, the evaporation cycle oxidation reaction process, the evaporation cycle reactor I is kept at normal pressure, the anhydrous hydrogen fluoride stored in the collecting tank 8 is heated and vaporized by the boiling pipe 6 and sent to the oxidation reactor 1 at a heating temperature of 30~ At 31°C, because the hydrogen fluoride in the boiling pipe 6 is transformed into a boiling state, the bubbling rises to become a gas-liquid mixed flow and enters the oxidation reactor 1. After the hydrogen fluoride liquid mixture flows through t...
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