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Method for preparing ozonolysis catalyst by utilizing waste LED lamp beads, ozonolysis catalyst prepared by method and application of ozonolysis catalyst

A LED lamp bead and ozone decomposition technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problems of waste LED lamp bead environmental pollution and other problems, achieve High recovery rate, cost savings, and the effect of reducing raw material costs

Active Publication Date: 2021-01-26
优赛环保工程(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a method for preparing an ozone decomposition catalyst by using waste LED lamp beads, the ozone decomposition catalyst prepared by the method and its application. The technical problem to be solved is how to recycle waste LED lamp beads. While solving the environmental pollution problem of waste LED lamp beads, it realizes the high-value utilization of waste LED lamp beads and increases the added value of waste LED lamp beads; at the same time, it greatly reduces the raw material cost of the ozone decomposition catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Ozone decomposition catalyst was prepared by using waste LED copper bracket and gold wire patch. The operation steps are as follows:

[0069] Take 91.3g of waste copper stent gold wire patches and pulverize with a knife crusher. After the material is crushed by the knife pulverizer, the particle size of the material is controlled to be less than 2mm.

[0070] The pulverized material is sent to a high-voltage electrostatic separator for sorting, so that the metal component and the non-metal component are separated, and 50 g of the metal component is obtained.

[0071] Take 50g of metal components and impregnate with 200ml of dilute nitric acid with a mass concentration of 30%, and its solid-to-liquid ratio is 1g:4ml to prepare a mixed solution of copper nitrate and silver nitrate.

[0072] Soak 200g of columnar activated carbon in nitrate solution for 20h, air-dry for 24h, and bake in a resistance furnace at 800°C for 6 hours under the protection of an inert atmosphere....

Embodiment 2

[0075] Preparation of ozonolysis catalyst by using waste LED iron bracket alloy wire patch. The operation steps are as follows:

[0076] Take 107.4g of waste iron stent alloy wire patch and crush it with a knife crusher. After the material is crushed by the knife crusher, the particle size of the material is controlled to be less than 2mm.

[0077] The pulverized material is sent to a high-voltage electrostatic separator for sorting, so that the metal component and the non-metal component are separated, and 50 g of the metal component is obtained.

[0078] Take 50g of metal components and impregnate with 300ml of dilute nitric acid with a mass concentration of 15%, and the solid-to-liquid ratio is 1g:6ml to make a mixed solution of silver nitrate, nickel nitrate, copper nitrate, and iron nitrate.

[0079] 300g γ-Al 2 o 3 Soak in nitrate solution for 20 hours, dry at 120°C for 10 hours, and bake at 500°C for 5 hours in a resistance furnace.

[0080] The ozonolysis catalyst ...

Embodiment 3

[0082] Ozonolysis catalyst was prepared by direct insertion of waste LED iron bracket alloy wire. The operation steps are as follows:

[0083] Take 94.4g waste iron bracket alloy wire and insert it directly, and crush it with a knife crusher. After the material is crushed by the knife crusher, the particle size of the material is controlled to be less than 2mm.

[0084] The pulverized material is sent to a high-voltage electrostatic separator for sorting, so that the metal component and the non-metal component are separated, and 50 g of the metal component is obtained.

[0085] Take 50g of metal components and impregnate with 400ml of dilute nitric acid with a mass concentration of 10%, and the solid-to-liquid ratio is 1g:8ml to make a mixed solution of silver nitrate, nickel nitrate, copper nitrate, and iron nitrate.

[0086] Soak 400g of columnar activated carbon in nitrate solution for 20h, air-dry for 24h, and bake in a resistance furnace at 800°C for 5 hours under the prot...

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Abstract

The invention provides a method for preparing an ozonolysis catalyst by utilizing waste LED lamp beads, the ozonolysis catalyst prepared by the method and application of the ozonolysis catalyst. The method comprises the following steps that (1) crushing the waste LED lamp beads, and separating metal components from the crushed materials; 2) putting the metal components into an acid solution for dipping to obtain an acid salt solution containing an ozone decomposition catalyst active component, wherein the catalyst active component comprises at least two of iron, copper, nickel and silver; 3) putting an ozonolysis catalyst carrier into the acid salt solution obtained in the step 2) for dipping; and 4) drying and roasting the ozone catalyst carrier impregnated in the step 3) to obtain the ozone decomposition catalyst. The technical problem to be solved is how to recycle waste LED lamp beads, the problem of environmental pollution of the waste LED lamp beads is solved, high-value utilization of the waste LED lamp beads is achieved, the additional value of the waste LED lamp beads is increased, and meanwhile, the raw material cost of an ozone decomposition catalyst is greatly reduced.

Description

technical field [0001] The invention belongs to the field of environmental protection technology, and further belongs to the field of solid waste treatment, in particular to a method for preparing an ozonolysis catalyst by using waste LED lamp beads, the ozonolysis catalyst prepared by the method and its application. Background technique [0002] LED (Light Emitting Diode, Light Emitting Diode), as a new generation of semiconductor solid-state lighting source, is widely used in lighting, signal indication, backlight and other fields due to its advantages of high efficiency and low consumption, energy saving and environmental protection, long life, fast response and small size. Become the mainstream device in the field of backlight and signal indication. [0003] With the popularization of LED products, the amount of solid waste of LED products represented by LED waste lamps is increasing rapidly, and the environmental hazards caused by them will become more serious; at the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C02F1/78
CPCB01J23/8926C02F1/78Y02A50/20
Inventor 刘小冕冯春
Owner 优赛环保工程(天津)有限公司
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