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Vacuum pyrolysis treatment and recovery method for retired fan blades

A fan blade, vacuum pyrolysis technology, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc. Pyrolysis treatment, reduction of generation and emissions, effect of lowering pyrolysis temperature

Active Publication Date: 2022-06-24
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the prior art, the present invention proposes a vacuum pyrolysis treatment and recovery method for decommissioned fan blades, which solves the problems of serious secondary pollution, low resource recovery rate, low added value of recycled products, and resource degradation and utilization in traditional treatment methods.

Method used

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  • Vacuum pyrolysis treatment and recovery method for retired fan blades

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Blade pretreatment: The decommissioned fan blades with a resin content of 40.90% are crushed into small pieces of about 50*400mm by double-shaft cutting equipment, and calcium oxide is added to mix them evenly. The feeding ratio of decommissioned fan blades to calcium oxide is 1 ton. : 19.79kg. It is sent into the preheating chamber, and the combustion flue gas after high temperature treatment is introduced into the preheating chamber for preheating treatment. The outlet temperature is 260℃, the preheating temperature is 280℃, and the preheating time is 26min

[0030](2) Vacuum pyrolysis: the decommissioned fan blades pretreated in step (1) are sent to the steel belt continuous vacuum pyrolysis furnace, and the retired fan blades are sent to the steel belt continuous vacuum pyrolysis furnace before the catalytic pyrolysis treatment In the exhaust chamber of the furnace, the exhaust chamber is evacuated to exhaust the air so that the air pressure in the exhaust cham...

Embodiment 2

[0037] (1) Blade pretreatment: The decommissioned fan blades with a resin content of 40.90% are crushed and processed into small pieces of about 50*400mm by double-shaft cutting equipment, and calcium oxide is added to mix them evenly. The feeding ratio of decommissioned fan blades to calcium oxide is 1 ton : 19.79kg. It is sent into the preheating chamber, and the combustion flue gas after high temperature treatment is passed into the preheating chamber for preheating treatment. The outlet temperature is 260℃, the preheating temperature is 280℃, and the preheating time is 21min

[0038] (2) Vacuum pyrolysis: the decommissioned fan blades pretreated in step (1) are sent to the steel belt continuous vacuum pyrolysis furnace, and the retired fan blades are sent to the steel belt continuous vacuum pyrolysis furnace before the catalytic pyrolysis treatment In the exhaust chamber of the furnace, the exhaust chamber is evacuated to exhaust the air so that the air pressure in the ex...

Embodiment 3

[0046] (1) Blade pretreatment: The decommissioned fan blades with a resin content of 29.71% are crushed into small pieces of about 50*400mm by double-shaft cutting equipment, and calcium oxide is added to mix them evenly. The feeding ratio of decommissioned fan blades to calcium oxide is 1 ton : 14.38kg. It is sent into the preheating chamber, and the combustion flue gas after high temperature treatment is passed into the preheating chamber for preheating treatment. The outlet temperature was 260°C, the preheating temperature was 280°C, and the preheating time was 26 minutes.

[0047] (2) Vacuum pyrolysis: the decommissioned fan blades pretreated in step (1) are sent to the steel belt continuous vacuum pyrolysis furnace, and the retired fan blades are sent to the steel belt continuous vacuum pyrolysis furnace before the catalytic pyrolysis treatment In the exhaust chamber of the furnace, the exhaust chamber is evacuated to exhaust the air so that the air pressure in the exhau...

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Abstract

The invention discloses a vacuum pyrolysis treatment and recovery method for retired fan blades, which comprises the following steps: (1) blade pretreatment: crushing the retired fan blades, adding a pyrolysis catalyst, and uniformly mixing; then, the combustion flue gas subjected to high-temperature treatment is introduced for preheating treatment; (2) vacuum pyrolysis: carrying out catalytic pyrolysis treatment on the pre-treated retired fan blade in a vacuum negative pressure state to obtain pyrolysis gas, pyrolysis oil and pyrolysis residues; (3) carrying out eddy current separation on the pyrolysis residues to obtain metal, and carrying out wind separation to obtain pyrolytic carbon, a fiber material and pyrolysis residues; (4) cooling and denitrifying the combustion flue gas generated in the step (1); and (5) removing dust and bromine from the cooled and denitrified combustion flue gas. According to the method, the retired fan blade can be efficiently treated, and resources such as fiber materials and metal in the retired fan blade can be recycled.

Description

technical field [0001] The present invention relates to a method for treating retired fan blades, in particular to a method for recovering decommissioned fan blades by vacuum pyrolysis. Background technique [0002] Fan blades are one of the core components of wind turbines. They have excellent characteristics such as low weight, high strength, corrosion resistance, and fatigue resistance. Their mass can account for up to 90% of the entire fan blade. At present, fan blades are made of glass fiber, carbon fiber or a mixture of reinforced thermosetting resin-based composite materials, and also contain a certain amount of aluminum, copper and other metals and a small amount of epoxy structural adhesive, polypropylene lacquer and other components. For every 6% increase in the diameter of the fan blade, the utilization rate of wind energy can increase by about 12%. Currently, wind turbines use about 1015 tons of fan blade material per megawatt of rated power. The normal design ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/40B09B5/00
CPCB09B5/00
Inventor 袁浩然张书豪王亚琢顾菁吴玉锋陈勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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