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Method for processing worn-out fluorescent tube

The technology of a fluorescent tube and a processing method is applied in the field of waste fluorescent tube processing to achieve the effects of reducing processing costs, ensuring recycling and protecting the environment

Inactive Publication Date: 2008-07-09
LIDA ENVIRONMENT ENG DALIAN ECONOMIC TECH DEV ZONE
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of timely absorbing and separating the mercury component gas after crushing the fluorescent lamp tube, and provides a treatment method for the overall treatment and recycling of the components of the fluorescent lamp tube for the timely treatment of the absorbed and washed waste liquid

Method used

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  • Method for processing worn-out fluorescent tube
  • Method for processing worn-out fluorescent tube
  • Method for processing worn-out fluorescent tube

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Embodiment Construction

[0007] The processing method of this waste and old fluorescent tube of the present invention is carried out according to steps, distribution:

[0008] ■Crushing and absorbing unit

[0009] Waste fluorescent tubes enter the crushing system and are crushed by the horizontal rotary crusher 2. The crushed glass fragments and scrap metal enter the container storage tank, and the mercury vapor generated at the same time enters the absorption system 8 under the guidance of the negative pressure airflow generated by the fan 9. The absorption system is divided into two stages of absorption. The first stage is the Venturi tube 6 Absorption method, the second stage is reverse spraying packed tower 7 absorption, the original absorption liquid is 1% potassium permanganate aqueous solution, when the absorption concentration drops to 0.8%, or supplement potassium permanganate to make the concentration rise to 1 %, or replace the absorbent. The consumption of active ingredients in the absor...

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Abstract

A method for treating the used fluorescent tube includes such steps as breaking in horizontal rotation breaker, absorbing the Hg gas by a absorbing system consisting of Venturi tubes and sprinkling tower suing the aqueous solution of potassium permanganate, separating metal from glass, washing glass with sulfuric acid solution to recover fluorescent powder, reducing the used solution of potassium permanganate by Fe powder, depositing, filter, treating the dregs, adding calcium chloride to the used sulfuric acid solution, reaction, and adding lime to neutralize the drained water.

Description

Technical field: [0001] The invention relates to the centralized treatment and disposal of waste fluorescent lamp tubes, the collection of crushed mercury-containing gas, fluorescent powder and metal accessories, the recycling of absorbed and washed liquid medicine, and post-treatment discharge. Background technique: [0002] The Chinese invention patent published in 1998 (publication (announcement) No. 1182380 and application patent No. 96193517.0) "Method and system for mechanically separating various materials / substances from waste fluorescent lamp tubes and similar broken lamps" includes a fan-driven Discharge air system, the latter is designed for material debris and air conveying and separation and is supplied with air from three separations. The fluorescent tubes are crushed by the pulverizer and sent to the first separation tower, where the larger material fragments are separated, while the smaller material fragments and particles leave the tower together with the ou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B07B9/00H01J9/52
CPCY02W30/60Y02W30/82
Inventor 张敬孙举柱孙德文金成日
Owner LIDA ENVIRONMENT ENG DALIAN ECONOMIC TECH DEV ZONE
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