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System for resource utilization of waste blades in rotary kiln and working method of system

A rotary kiln and recycling technology, applied in the system field of recycling waste blades, can solve the problems of lack of mature technology, waste of resources, difficult degradation of thermosetting composite materials, etc., and achieve high utilization rate and large processing capacity. , the effect of good environmental protection and economic benefits

Pending Publication Date: 2021-07-16
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thermosetting composite materials are difficult to degrade. If there is no recycling, it will cause a waste of resources and put a huge pressure on the environment.
Thermally decompose the thermosetting plastics of the blades, and the decomposition products can be used as raw materials after recycling. Compared with incineration and other methods, the attribute of resource recycling is more prominent, but there is no mature technology yet

Method used

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  • System for resource utilization of waste blades in rotary kiln and working method of system
  • System for resource utilization of waste blades in rotary kiln and working method of system
  • System for resource utilization of waste blades in rotary kiln and working method of system

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0039] Such as figure 1 , In the system for recycling waste blades in the rotary kiln of the present invention, raw materials such as clay and limestone are crushed and transported to the homogenizing bin 1 in a certain proportion for homogenization and mixing treatment to form raw materials. There is a discharge port at the bottom of the homogenizing bin 1, which is transported to the bucket elevator 3 through the first auger 2, and is lifted to a certain height of the suspension preheater 5 by the bucket elevator 3. After the bucket elevator 3 is unloaded, it is also used The second auger 4 transports the raw material and sends it into the suspension preheater 5 .

[0040] Such as figure 2 As shown, in one embodiment of the present invention, the suspension...

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Abstract

The invention discloses a system for resource utilization of waste blades in a rotary kiln and a working method of the system, and belongs to the technical field of resource recovery. The system comprises a blade crushing system, a raw material feeding system, a flue gas treatment system, a suspension preheater, a decomposing furnace, a rotary kiln, a clinker cooling device and a blade particle pneumatic conveying system. Crushed waste fan blade particles are pneumatically conveyed into a rotary kiln to be pyrolyzed and combusted, the calorific value of the blade is utilized, most of glass fibers directly fall into raw materials to participate in firing to form clinker, and a small number of glass fibers wrapped and taken away by flue gas are finally separated by a multi-stage cyclone of the suspension preheater and sent back into the cement kiln. The utilization rate of glass fibers is extremely high, large waste blade handling capacity can be achieved on the premise that normal operation of a cement kiln system is not affected, and the system adjusting flexibility is high; and harmless and recycling treatment of the waste fan blades can be smoothly achieved, and good environmental protection benefits and economic benefits are generated.

Description

technical field [0001] The invention belongs to the technical field of resource recovery, and in particular relates to a system and a working method for resource utilization of waste blades in a rotary kiln. Background technique [0002] The wind power industry is showing a rapid development trend, and the newly installed capacity is increasing every year. On the other hand, due to the design life and other reasons, a large number of wind turbines are facing elimination every year. The leftover waste and defective products together constitute a large number of discarded / waste blades (collectively referred to as waste blades) that need to be disposed of comprehensively every year. Effective recycling of waste leaves can meet the expectations of building an environment-friendly society, and the harmless resource disposal of waste leaves is worthy of further exploration. [0003] In terms of material composition, fan blades are mainly composed of composite materials (epoxy res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/44C04B7/43C04B7/47C04B7/24F23G7/12F23G5/033F23G5/027F23G5/08F23G5/20F27B19/04F27D13/00F27D17/00F27D99/00F27D15/02
CPCC04B7/4423C04B7/4438C04B7/434C04B7/47C04B7/24F23G7/12F23G5/033F23G5/0276F23G5/08F23G5/20F27B19/04F27D13/00F27D17/004F27D17/008F27D99/0033F27D15/02F23G2201/80F23G2201/30F23G2203/20F23G2204/101F23G2209/28Y02P40/10
Inventor 林伟荣蔡安民许扬李媛郑磊杨博宇
Owner HUANENG CLEAN ENERGY RES INST
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