A feeding system conveying device and method for anhydrous hydrogen fluoride production

Abstract

The invention discloses a conveying device of a feeding system for anhydrous hydrogen fluoride production. The conveying device comprises a pretreatment tank, a prestorage tank, a sulfate acid tank and a reaction converter, wherein a first treating chamber and a second treating chamber are formed in the pretreatment tank; the first treating chamber comprises a cleaning chamber and a dirt collecting chamber; a cleaning barrel and a cleaning device are arranged inside the cleaning chamber; a feed hopper is arranged at the left end of the cleaning barrel; the second treating chamber comprises a drying chamber and a crushing chamber; a crushing device and a screening device are arranged inside the crushing chamber; a second stirring device and a weighing device are arranged inside the prestorage tank; the reaction converter comprises a reaction chamber and a spare chamber. The conveying device is simple in structure and strong in practicality; through cleaning and drying of fluorite, the raw material quality of fluorite powder is improved; the fluorite powder is screened through the screening device, so that the particle size of the screened fluorite powder meets the best reaction requirement, and the quality of a reaction product and the reaction speed rate are further improved; the conveying device is more reasonable in structural design, reduces the energy loss and improves the economic efficiency.

Description

technical field [0001] The invention relates to a feeding system conveying device and method for anhydrous hydrogen fluoride production. Background technique [0002] Hydrogen fluoride is the most basic raw material of modern fluorine chemical industry, and the market demand is huge. The anhydrous hydrogen fluoride production line uses fluorite powder (calcium fluoride) and sulfuric acid to be transported to the runner through the conveying device for reaction to produce slag and crude anhydrous hydrogen fluoride. At present, although the anhydrous hydrogen fluoride production line is running stably and normally, there are still some problems. In the existing production, due to the low feeding accuracy of the raw material feeding system and the problem of proportioning, the conversion rate of fluorite powder is not high, resulting in high content of unreacted fluorite powder and hydrofluoric acid in the slag, serious waste of resources and high cost. And in the existing pr...

AI Technical Summary

Problems solved by technology

In the existing production, due to the low feeding accuracy of the raw material feeding system and the problem of proportioning, the conversion rate of fluorite powder is not high, resulting in high content of unreacted fluorite powder and hydrofluoric acid in the slag, serious waste of resources and high cost

Moreover, in the existing production, pipeline blockage often occurs, which not only increases the maintenance labor intensity in the later stage, but also causes large economic losses, which seriously affects the actual use.

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