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Method and device for harmlessly processing and recycling mercury of waste fluorescent light tube

A technology for harmless treatment and fluorescent lamps, which is applied in the field of hazardous waste treatment and recycling, and can solve problems such as inability to set up, long collection and storage links, and pollutants.

Inactive Publication Date: 2009-11-25
陈午
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the fact that mercury is extremely harmful to human health, countries and regions around the world have successively issued regulations on the treatment of waste fluorescent lamps. my country also formulated the "Technical Policy on Hazardous Waste Pollution Prevention and Control" in 2001 to encourage research and development of waste fluorescent lamps. Disposal and Recycling technology, but no related equipment and facilities have been seen so far. Even in developed countries, only treatment methods such as sulfur addition to landfill, direct heat crushing and separation, and purging and separation are used. The former is to make sulfur Chemically react with mercury and turn it into a harmless solid and landfill it in a safe place. The latter two are to separate liquid or gaseous mercury and collect it for recycling.
These are all industrialized processes, and the facilities are complex and huge, which cannot be installed in various industrial areas, living areas and office areas. Most of them are broken into pollutants before reaching the processing site
There is no such treatment equipment and facilities in our country, which is a big gap in environmental protection technology.

Method used

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  • Method and device for harmlessly processing and recycling mercury of waste fluorescent light tube
  • Method and device for harmlessly processing and recycling mercury of waste fluorescent light tube
  • Method and device for harmlessly processing and recycling mercury of waste fluorescent light tube

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiments of the present invention are as figure 1 As shown, it is a harmless treatment and recycling device for fluorescent lamp mercury, which includes a sealed barrel 10, a pulverizer 20, an air circulation system 30, a mercury adsorber 40, an electric heater 50 and an electric control component 60, and the sealed barrel 10 includes a bucket body 11 with an opening, a sealing cover 12 that is movably covered on the opening of the bucket body, a pulverizer 20 and an electric heater 50 are fixedly installed in the sealed bucket, and the air circulation system 30 includes a fan 31 that communicates with the inner cavity of the sealed bucket. The air inlet 32 ​​and the air outlet 33, the mercury adsorber 40 includes a housing 41 and an adsorption core 42 movably placed in the housing, the adsorption core 42 is made of a breathable material attached with mercury adsorbent.

[0037]There is a one-way exhaust valve 13 on the wall of the sealing cover 12 of the sealing bar...

Embodiment 2

[0059] The second embodiment of the present invention is as follows figure 2 As shown, it is basically the same as the first embodiment, the only difference is:

[0060] First, after the barrel body and the sealing cover are combined, they are clamped with locking screws 16 to ensure good sealing;

[0061] Second, the partition 111 of the inner cavity of the barrel 11 is placed obliquely at the lower part of the inner cavity of the barrel 11, and the motor 21 of the pulverizer 20 is also fixed on the partition 111 obliquely, so that the installation is more convenient for slag discharge;

[0062] Third, the electronic control part 60 in this example is a Luoji program control device including a relay and a delay device, and its automation degree and flexibility are poor.

Embodiment 3

[0064] The third embodiment of the present invention is as follows image 3 As shown, it is basically the same as the first embodiment, the only difference is:

[0065] The electric heater 50 is a metal electric heating pipe 50b, which is fixedly installed on the partition plate 111 at the lower part of the inner cavity of the barrel 11. In order not to affect the slag discharge, the metal electric heating pipe is preferably fixed on the lower side of the partition plate.

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Abstract

The invention relates to a method for harmlessly processing and recycling the mercury of a fluorescent light tube. A waste light tube is placed into a seal barrel provided with a heater, a pulverizing machine and a mercury adsorbing device with elemental sulfur attached to the surface and the waste light tube is pulverized and heated in the seal barrel so that mercury is vaporized into mercury steam, and the mercury steam is chemically combined with the elemental sulfur on the adsorbing device to generate solid mercuric sulfide so as to be recycled together conveniently. The method designs a small device for harmlessly processing and recycling the mercury of the waste fluorescent light tube, which comprises the seal barrel (10), the pulverizing machine (20), an air cycle system (30), the mercury adsorbing device (40), an electric heater (50) and an electrical control component (60), is convenient for being installed in all industrial area, living areas and office areas, is used for processing the waste fluorescent light tube on site, realizes automatic unmanned operation, provides realistic possibility for harmlessly processing and recycling the mercury of the waste fluorescent light tube, can effectively eliminate mercury pollution, protects a human living environment and a natural environment and fills a blank of the environmental-friendly and circulatory economy of China.

Description

technical field [0001] The invention belongs to a method and equipment for hazardous waste treatment and recycling, in particular to a harmless treatment and recycling device for mercury in waste fluorescent lamp tubes. Background technique [0002] Fluorescent lamps have high luminous efficiency, 7-10 times that of incandescent lamps, various color temperatures, up to 3000-7500K, and much longer service life than incandescent lamps. Therefore, fluorescent lamps have replaced incandescent lamps in almost all lighting places and are widely used. my country's annual output has exceeded 1 billion, and it is increasing at an average annual rate of 10%. It can be seen that the number of fluorescent lamps scrapped each year is also staggering. For example, the annual scrapped amount in Beijing is close to 7 million. These discarded lamp tubes are a major source of dangerous pollution for the whole society. Because there is 20-50 mg of mercury in each lamp tube, there are over ten...

Claims

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Application Information

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IPC IPC(8): H01J9/50H01J9/52
CPCY02W30/82
Inventor 陈午
Owner 陈午