A processing method and system for barium fluoride waste containing metal ions

A metal ion and treatment method technology, which is applied in the field of barium fluoride waste treatment, can solve the problems of excessive waste water output, resource waste, and difficult disposal, and achieve the effects of reducing waste treatment costs, realizing recycling, and significant economic benefits

Active Publication Date: 2022-04-15
PERIC SPECIAL GASES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) As hazardous waste disposal, the cost is high, which will cause waste of resources;
[0007] (2) There is a lot of waste water output, it is difficult to dispose of it, and there may be secondary pollution

Method used

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  • A processing method and system for barium fluoride waste containing metal ions

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Refer to attached figure 1 As shown, the system of barium fluoride waste containing metal ions is installed, the barium fluoride waste containing metal ions and the hydrofluoric acid in the finished product hydrofluoric acid storage tank 1 are respectively added through the pickling kettle 2 feed ports, the first solid-liquid The liquid separated by the separation device 3 is stored in the filtrate storage tank 4; the acidic solid barium fluoride is added through the feeding port of the neutralization kettle 5, and the neutral water and the neutralization alkali are respectively passed through the water inlet of the neutralization kettle 5 and the neutralization alkali The feeding port is added, and the neutral water separated by the solid-liquid separation equipment is stored in the neutral water storage tank 7 and reused through the pipeline. The solid barium fluoride is a pure product; the tail gas passes through the hydrogen fluoride absorption tower 8 and the tail g...

Embodiment 2

[0046] Refer to attached figure 1 As shown, the system of barium fluoride waste containing metal ions is installed, the barium fluoride waste containing metal ions and the hydrofluoric acid in the finished product hydrofluoric acid storage tank 1 are respectively added through the pickling kettle 2 feed ports, the first solid-liquid The liquid separated by the separation device 3 is stored in the filtrate storage tank 4; the acidic solid barium fluoride is added through the feeding port of the neutralization kettle 5, and the neutral water and the neutralization alkali are respectively passed through the water inlet of the neutralization kettle 5 and the neutralization alkali The feeding port is added, and the neutral water separated by the solid-liquid separation equipment is stored in the neutral water storage tank 7 and reused through the pipeline. The solid barium fluoride is a pure product; the tail gas passes through the hydrogen fluoride absorption tower 8 and the tail g...

Embodiment 3

[0048] Refer to attached figure 1 As shown, the system of barium fluoride waste containing metal ions is installed, the barium fluoride waste containing metal ions and the hydrofluoric acid in the finished product hydrofluoric acid storage tank 1 are respectively added through the pickling kettle 2 feed ports, the first solid-liquid The liquid separated by the separation device 3 is stored in the filtrate storage tank 4; the acidic solid barium fluoride is added through the feeding port of the neutralization kettle 5, and the neutral water and the neutralization alkali are respectively passed through the water inlet of the neutralization kettle 5 and the neutralization alkali The feeding port is added, and the neutral water separated by the solid-liquid separation equipment is stored in the neutral water storage tank 7 and reused through the pipeline. The solid barium fluoride is a pure product; the tail gas passes through the hydrogen fluoride absorption tower 8 and the tail g...

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Abstract

The invention discloses a processing method and system for barium fluoride waste containing metal ions. The metal ion-containing barium fluoride waste and hydrofluoric acid are added to a pickling kettle, stirring and heating are started, the metal ions in it are dissolved, and the stirring is carried out. After completion, carry out solid-liquid separation, wherein the filtrate is stored in the filtrate storage tank, and the acid barium fluoride solid is added to the neutralization kettle; water is added to the neutralization kettle to start stirring and heating, and the neutralization alkali is slowly added to adjust the pH of the solution to neutrality After the solid-liquid separation is carried out, the solid barium fluoride is dried to be a barium fluoride product, which is reused with neutral water; the hydrogen fluoride tail gas volatilized during the pickling process is absorbed by the absorption system and becomes hydrofluoric acid for reuse, and the remaining tail gas passes through the lye solution. Discharge up to standard after neutralization. The invention removes the metal ions in the barium fluoride waste by means of pickling combined with neutralization, and the produced pure barium fluoride product realizes the recycling of resources, reduces the processing cost of the barium fluoride waste, and has significant advantages. economic benefits.

Description

technical field [0001] The invention relates to the technical field of solid hazardous waste treatment, in particular to a treatment method and system for barium fluoride waste containing metal ions. Background technique [0002] As an indispensable kind of inorganic fluoride, barium fluoride has been widely used in many industries such as optical fibers for light guides, optical glass, and motor brushes. At the same time, barium fluoride crystal is an excellent high-density optical material. With its excellent scintillation performance and fast time characteristics, it plays an increasingly important role in nuclear medicine, nuclear physics and remote sensing technology. [0003] In many processes in the fine chemical industry and other chemical industries, barium salt is often used as one of the important reaction raw materials to remove fluorine from substances. However, a large amount of barium fluoride waste is often produced during its use, which is doped with a larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/70B01D53/78B01D53/68
CPCB09B3/00B01D53/78B01D53/68B01D2257/2047Y02W30/20Y02C20/30
Inventor 苏嘉轩曹红梅李稣领张明杰刘跃旭李林齐航王云飞周志强
Owner PERIC SPECIAL GASES CO LTD
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