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Method for preparing phenolic substances through photo-thermal pyrolysis of waste fan blades

A technology for fan blades and phenolic substances is applied in the field of photothermal pyrolysis of waste fan blades to prepare phenolic substances, and can solve the problem of not providing effective treatment and resource utilization methods for waste fan blades, fan blades occupying large land resources, and environmental damage. And other issues

Inactive Publication Date: 2021-09-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the scrapped fan blades are not disposed of in time, it will not only occupy a large amount of land resources, but also cause damage to the local environment
However, there is currently no relevant technology to provide effective treatment and resource utilization methods for waste fan blades

Method used

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  • Method for preparing phenolic substances through photo-thermal pyrolysis of waste fan blades
  • Method for preparing phenolic substances through photo-thermal pyrolysis of waste fan blades
  • Method for preparing phenolic substances through photo-thermal pyrolysis of waste fan blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a method for preparing phenolic substances by photothermal pyrolysis of waste fan blades in this embodiment comprises the following steps:

[0027] S1. Putting scrapped wind turbine rotor blades into a crushing device, and obtaining broken fan blades through mechanical crushing;

[0028] S2. The blades of the broken fan are pyrolyzed in the heat collecting tube of the trough solar collector. The pyrolysis conditions are: nitrogen gas is introduced, the air flow is 60ml / min, the heating rate is 5K / min, the temperature is 300°C, and the heat preservation The time is 80min. During the pyrolysis process, the yields of tar and pyrolysis coke are 4.23% and 30.42% respectively;

[0029] S3. The tar obtained in S2 is first filtered to remove solid impurities, and then centrifuged at a speed of 6000r / min to remove light components in the tar, and the tar obtained after centrifugation is subjected to rectification treatment to obtain phenol with a mass...

Embodiment 2

[0033] A method for preparing phenolic substances by photothermal pyrolysis of waste fan blades in this embodiment comprises the following steps:

[0034] S1. Putting scrapped wind turbine rotor blades into a crushing device, and obtaining broken fan blades through mechanical crushing;

[0035] S2. The blades of the broken fan are pyrolyzed in the heat collecting tube of the trough solar collector. The pyrolysis conditions are: carbon dioxide is introduced, the air flow is 160ml / min, the heating rate is 15K / min, the temperature is 450°C, and the holding time is 100min, during the pyrolysis process, the yields of tar and pyrolysis coke were 7.26% and 40.53% respectively;

[0036] S3. The tar obtained in S2 is first filtered to remove solid impurities, and then centrifuged at a speed of 7000r / min to remove light components in the tar, and the tar obtained after centrifugation is subjected to rectification treatment to obtain phenol with a mass ratio of 16.85%. , 10.43% of 4-iso...

Embodiment 3

[0039] A method for preparing phenolic substances by photothermal pyrolysis of waste fan blades in this embodiment comprises the following steps:

[0040] S1. Putting scrapped wind turbine rotor blades into a crushing device, and obtaining broken fan blades through mechanical crushing;

[0041] S2. The blades of the broken fan are pyrolyzed in the heat collecting tube of the trough solar collector. The pyrolysis conditions are: carbon dioxide is introduced, the air flow is 250ml / min, the heating rate is 30K / min, the temperature is 550°C, and the holding time is During the pyrolysis process, the yields of tar and pyrolysis coke were 15.35% and 50.69% respectively;

[0042] S3, the tar obtained in S2 is first filtered to remove solid impurities, and then centrifuged at a speed of 8000r / min to remove light components in the tar, and the tar obtained after centrifugation is subjected to rectification treatment to obtain 19.32% by mass ratio Phenol, 11.91% 4-isopropenylphenol and ...

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Abstract

The invention belongs to the field of waste fan blade treatment and resource utilization, and particularly relates to a method for preparing phenolic substances through photo-thermal pyrolysis of waste fan blades. The method for preparing the phenolic substances through photo-thermal pyrolysis of the waste fan blades comprises the steps of S1, smashing scrapped wind driven generator rotor blades to obtain smashed fan blades; S2, pyrolyzing the smashed fan blades in a photo-thermal pyrolysis device to obtain pyrolytic coke and pyrolytic oil; S3, removing part of impurities from the pyrolytic oil obtained in S2 through filtration and centrifugation to obtain preliminarily purified tar; and S4, rectifying the preliminarily purified tar to obtain three phenolic substances, namely, phenol, p-isopropyl phenol and 4-isopropenyl phenol. The method has the advantages that the waste fan blades are treated in a photo-thermal pyrolysis mode to prepare phenolic chemical raw materials, and resource utilization of the waste fan blades is achieved.

Description

technical field [0001] The invention belongs to the field of waste fan blade treatment and resource utilization, and particularly relates to a method for preparing phenolic substances by photothermolysis of waste fan blades. Background technique [0002] As one of the new energy sources with the most abundant reserves and the most mature technology, wind energy has broad prospects for utilization and development. Wind power generation is the use of wind to drive the rotation of fan blades to produce electricity. The planned utilization of wind power in my country has begun in 2003, and the installed capacity of wind power has increased rapidly. In 2019, the installed capacity of wind power in my country is 210050MW, and 1MW of fan blades needs about 9.6 tons of composite materials, and the life of fan blades is about 20 to 25 years, which means that a large number of fan blades will be scrapped in my country in the next 5 to 10 years. [0003] Areas where onshore wind turbin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/50C07C37/70C07C39/04C07C39/06C07C39/19
CPCC07C37/005C07C37/50C07C37/685C07C39/04C07C39/06C07C39/19Y02P20/50
Inventor 胡松雷志文任强强吴紫月张嘉琳向军苏胜汪一江龙徐俊
Owner HUAZHONG UNIV OF SCI & TECH
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