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High-temperature nitrogen pyrolysis treatment and recovery method for retired fan blades

A technology for fan blades and recovery methods, applied in separation methods, hydrocarbon oil treatment, chemical instruments and methods, etc., can solve the problems of low added value of recycled products, serious secondary pollution, and resource degradation and utilization.

Pending 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 high-temperature nitrogen 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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  • High-temperature nitrogen pyrolysis treatment and recovery method for retired fan blades

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (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.

[0031] (2) Heating with nitrogen: heating nitrogen under high temperature conditions to obtain high temperature nitrogen. Specifically, nitrogen is heated at a high temperature in a high-temperature oxygen-free gas generator, the heating temperature is 1250°C, the outlet temperature of the high-temperature nitrogen is 1100°C, and the combustion flue gas generated in this step is passed into a cooling device for heat recovery, and the cooling The flue gas inlet temperature of the device was 850°C, and the flue gas outlet temperature of the cooling device was 300°C.

[0032] (3) High-temperature nitrogen pyrolysis: the decommissioned fan blades pretreated in ste...

Embodiment 2

[0038] (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.

[0039] (2) Heating with nitrogen: heating nitrogen under high temperature conditions to obtain high temperature nitrogen. Specifically, nitrogen is heated at a high temperature in a high-temperature oxygen-free gas generator, the heating temperature is 1150 ° C, the outlet temperature of the high temperature nitrogen is 900 ° C, and the combustion flue gas generated in this step is passed into the cooling device for heat recovery, the cooling The flue gas inlet temperature of the device was 850°C, and the flue gas outlet temperature of the cooling device was 300°C.

[0040] (3) High-temperature nitrogen pyrolysis: the decommissioned fan blades pretreated in st...

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.

[0047] (2) Heating with nitrogen: heating nitrogen under high temperature conditions to obtain high temperature nitrogen. Specifically, nitrogen is heated at a high temperature in a high-temperature oxygen-free gas generator, the heating temperature is 1250°C, the outlet temperature of the high-temperature nitrogen is 1100°C, and the combustion flue gas generated in this step is passed into a cooling device for heat recovery, and the cooling The flue gas inlet temperature of the device was 850°C, and the flue gas outlet temperature of the cooling device was 300°C.

[0048] (3) High-temperature nitrogen pyrolysis: the decommissioned fan blades pretreated in step (1) are sent...

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Abstract

The invention discloses a high-temperature nitrogen 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; (2) nitrogen heating: heating nitrogen under a high-temperature condition to obtain high-temperature nitrogen; (3) performing high-temperature pyrolysis on the pre-treated retired fan blade in a high-temperature nitrogen atmosphere to obtain pyrolysis gas, pyrolysis oil and pyrolysis residues; (4) 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; (5) cooling and denitrifying the combustion flue gas generated in the steps (2) and (3); and (6) 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 invention relates to a method for treating decommissioned fan blades, in particular to a high-temperature nitrogen pyrolysis treatment and recovery method for decommissioned fan blades. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10G1/02C10G1/00C10B57/06C10B57/10B01D53/78B01D53/56B01D53/68B01D53/75F23J15/06F23J15/02F23J15/04
CPCC10B53/00C10G1/02C10G1/002C10B57/06C10B57/10B01D53/78B01D53/56B01D53/68B01D53/75F23J15/06F23J15/02F23J15/04C10G2300/1003B01D2251/2067B01D2251/2062B01D2251/304B01D2251/604C10G2300/70
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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