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Tire carbon catalyst capable of activating persulfate and preparation method and use thereof

A technology for activating persulfate and carbon catalysts, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc. problems, to achieve the effects of low cost, easy control of the reaction process, and wide source of raw materials

Active Publication Date: 2018-12-14
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of burying or stacking not only occupies a large area, but also easily causes fires; the process of retreading waste tires and producing rubber powder will produce volatile organic pollutants; the process of energy recovery by incineration will also produce dioxins, furans and Pollutants such as polycyclic aromatic hydrocarbons

Method used

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  • Tire carbon catalyst capable of activating persulfate and preparation method and use thereof
  • Tire carbon catalyst capable of activating persulfate and preparation method and use thereof
  • Tire carbon catalyst capable of activating persulfate and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ① Pull out the steel wire in the clean tire with a wire drawing machine, break it into rubber blocks (particle size 4cm) with a shredder, remove the remaining steel wire through a magnetic separation process, and add it to a low-temperature pyrolysis reactor;

[0027] ②The heat required for the reaction in the low-temperature pyrolysis reactor is provided by the high-temperature flue gas of the air heating furnace. The reaction conditions are controlled at a slight negative pressure of 0.030MPa, and the reaction temperature is 400°C in a closed oxygen-free environment; after 10 hours of reaction, pyrolytic carbon black is obtained;

[0028] ③The pyrolytic carbon black reduced by the low-temperature pyrolysis reactor is quenched and heat-exchanged by the multi-stage discharge system (the cooling medium is circulating water) to 30°C, and the remaining steel wire and other impurities are separated by magnetic separation to obtain coarse carbon black (particle size 200mm ), ...

Embodiment 2

[0032] ① Pull out the steel wire in the clean tire with a wire drawing machine, break it into rubber blocks (particle size 4cm) with a shredder, remove the remaining steel wire through a magnetic separation process, and add it to a low-temperature pyrolysis reactor;

[0033] ②The heat required for the reaction in the low-temperature pyrolysis reactor is provided by the high-temperature flue gas of the air heating furnace. The reaction conditions are controlled at a slight negative pressure of 0.030MPa, and the reaction temperature is 400°C in a closed oxygen-free environment; after 10 hours of reaction, pyrolytic carbon black is obtained;

[0034] ③The pyrolytic carbon black reduced by the low-temperature pyrolysis reactor is quenched and heat-exchanged by the multi-stage discharge system (the cooling medium is circulating water) to 30°C, and the remaining steel wire and other impurities are separated by magnetic separation to obtain coarse carbon black (particle size 200mm ), ...

Embodiment 3

[0038] ① Pull out the steel wire in the clean tire with a wire drawing machine, break it into rubber blocks (particle size 4cm) with a shredder, remove the remaining steel wire through a magnetic separation process, and add it to a low-temperature pyrolysis reactor;

[0039] ②The heat required for the reaction in the low-temperature pyrolysis reactor is provided by the high-temperature flue gas of the air heating furnace. The reaction conditions are controlled at a slight negative pressure of 0.030MPa, and the reaction temperature is 400°C in a closed oxygen-free environment; after 10 hours of reaction, pyrolytic carbon black is obtained;

[0040] ③The pyrolytic carbon black reduced by the low-temperature pyrolysis reactor is quenched and heat-exchanged by the multi-stage discharge system (the cooling medium is circulating water) to 30°C, and the remaining steel wire and other impurities are separated by magnetic separation to obtain coarse carbon black (particle size 200mm ), ...

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Abstract

The invention discloses a preparation method of a tire carbon catalyst capable of efficiently activating persulfate. The preparation method comprises: carrying out crushing, magnetic separation and low temperature pyrolysis on waste and old tires to obtain catalyst carrier tire carbon, and carrying out impregnation, mixing kneading and pyrolysis on CuO, CeO2, Fe2O3, Bi2O3 and Co2O3 to obtain the novel and efficient catalyst for a persulfate system. The catalyst has the advantages of high activity in the persulfate system, small active component impregnation amount, simple preparation process,mature technology, good stability and low cost and can be used in the fields of sewage treatment and environmental treatment. The catalyst utilizes waste and old tires as raw materials, changes wasteand old tires into valuables, fully utilizes the resources, treats wastes through wastes and has significant economic benefits. The invention also provides a method for decomposing organic wastewaterby the catalyst. The method has an organic wastewater removal rate of 95% or more and satisfies national first-class wastewater discharge standard.

Description

technical field [0001] The invention relates to a preparation method and application of a high-efficiency activated persulfate tire carbon catalyst, which is suitable for persulfate oxidation treatment of organic wastewater and belongs to the field of water treatment technology and environmental functional materials. Background technique [0002] The chemical industry is one of the important industries in our country and occupies an important position in the development of our country. However, with the rapid development of the chemical industry, the problem of water pollution is also becoming more and more serious. A large amount of refractory organic wastewater produced by the chemical industry is a major difficulty in wastewater treatment. In recent years, antibiotic wastewater has received more and more attention. Antibiotics are widely used in the treatment of infectious diseases as well as in disease prevention and growth promotion. Although the content of antibioti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J23/83B01J23/843C02F1/72C02F101/30
CPCC02F1/725B01J23/75B01J23/83B01J23/8437C02F2101/30
Inventor 于杨刘西扬周园柏黄菲何益得张永军乔纳森贝尔
Owner NANJING TECH UNIV
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