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Device for recovering and treating photoelectric material pickling waste liquid

A technology for the recovery and treatment of pickling waste liquid, which is applied in chemical/physical processes, chemical/physical/physical chemical processes, inorganic chemistry, etc., can solve the problems that cannot meet the requirements of waste acid liquid recycling, and achieve obvious environmental protection benefits , High evaporation efficiency, continuous and stable production effect

Inactive Publication Date: 2018-09-18
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the conventional treatment process cannot meet the requirements of the waste acid recovery and utilization at all.

Method used

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  • Device for recovering and treating photoelectric material pickling waste liquid
  • Device for recovering and treating photoelectric material pickling waste liquid

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] see Figure 1-2 , a recovery and treatment device for photoelectric material pickling waste liquid, comprising an evaporator 1, the shell side of the evaporator 1 is connected to the shell side of the preheater 2, and the evaporator 1 and the preheater 2 are made of polycarbonate Ethylene fluoride high-temperature impregnated graphite evaporator, wherein the evaporator 1 adopts a falling film evaporation structure, the liquid outlet of the evaporator 1 ...

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Abstract

The invention discloses a device for recovering and treating a photoelectric material pickling waste liquid. The device comprises an evaporator, the shell side of the evaporator is connected with theshell side of a preheater, the liquid outlet of the evaporator is imterconnected with the liquid inlet of a separator, the liquid outlet of the separator is interconnected with the liquid inlet of a steam saturator, the liquid outlet of the steam saturator is interconnected with the liquid inlet of a first-stage acid absorption tank, the liquid outlet of the first-stage acid absorption tank is interconnected with the liquid inlet of a second-stage acid absorption tank, the liquid outlet of the second-stage acid absorption tank is interconnected with the liquid inlet of a condenser, the liquidoutlet of the condenser is interconnected with the liquid inlet of a gas-liquid separation tank, and the liquid outlet of the gas-liquid separation tank is interconnected with the liquid inlet of a concentrate condenser. The device meets the requirements of anticorrosion, is economical and reasonable, reduces the device cost, and also has the advantages of high evaporation efficiency, continuousness and stability in production, simplicity in operation, low treatment cost and obvious environmental protection benefits.

Description

technical field [0001] The invention relates to the field of waste liquid treatment devices, in particular to a recovery and treatment device for photoelectric material pickling waste liquid. Background technique [0002] Optoelectronics industry manufacturers have waste acid produced after mixing pickling optoelectronic materials in the daily production process. The waste acid contains a relatively high content of sulfuric acid. If the waste acid is not properly treated and discharged, it will inevitably affect The environment causes irreversible damage. Now the industry generally uses alkaline substances to neutralize the waste acid solution, which not only produces a large amount of hazardous waste sludge, but also wastes the resources of sulfuric acid and hydrofluoric acid; It also contains hydrofluoric acid and fluosilicic acid, which increases the difficulty of recycling the waste acid solution. At present, the industry is looking for a recovery and treatment technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/02C01B17/88C01B33/12C01B7/19
CPCB01J19/02B01J2219/0295C01B7/196C01B17/88C01B33/12
Inventor 曾启
Owner CENT SOUTH UNIV
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