Method and equipment for decomposing and recovering glass fiber reinforced plastics

Abstract

The invention discloses a method and equipment for decomposing and recovering glass fiber reinforced plastics. The method for recovering the glass fiber reinforced plastics comprises the following steps of: performing high-temperature heat treatment, namely performing pyrolysis on glass fiber reinforced plastics waste materials to be treated under the vacuum condition in an electric heating mode to form solid and a flue gas mixture, and recovering the solid residues which are obtained after the high temperature heat treatment; and recovering the flue gas mixture, namely treating the flue gas mixture which is produced in the high temperature heat treatment process to form recoverable chemical crude oil and fuel gas. The equipment for decomposing and recovering the glass fiber reinforced plastics comprises a heat treatment device, a dedusting and catalytic reforming device and a cooling liquefaction recovery device; the heat treatment device is used for performing pyrolysis on the glass fiber reinforced plastics waste materials to be treated under the vacuum condition, and the solid residues which are obtained after pyrolysis are cooled and taken out to be recovered; and the flue gas mixture which is obtained after pyrolysis is dedusted and catalyzed by the dedusting and catalytic reforming device and then is treated by the cooling liquefaction recovery device to form the chemical crude oil and fuel gas, so that materials are recovered and utilized.

Description

technical field [0001] The invention relates to a fiberglass recycling technology, in particular to a fiberglass decomposition and recycling method and recycling equipment for realizing recycling of fiberglass materials. Background technique [0002] With its advantages of flexible design, easy forming, light weight, high strength, and corrosion resistance, FRP is widely used in building materials, transportation, mining, and chemical industries, but it is not easy to degrade, weather, and recycle. With the continuous increase of production and the sharp increase in the amount of FRP waste, it has been verified that the leftovers and waste waste generated during the production and processing process in Zaoqiang, Hebei Province have reached 6000-8000 tons per year. Traditional landfill and incineration The method occupies a large amount of land, causing secondary environmental pollution, and the treatment cost is high, and the treatment capacity is limited, which is far from ...

AI Technical Summary

Problems solved by technology

The processing device is based on the processing device of ordinary plastic film waste. Its pyrolysis reactor is a common reactor type, which needs to be processed in batches. After each treatment, the lid of the kettle needs to be opened to feed materials, which will cause harmful gases. emissions, and the device must have a set of coal heating equipment, the combustion of coal will increase pollution and carbon emissions

[0004] In the existing FRP recovery equipment, there is also a continuous feeding device, which is heated by fuel gas, which eliminates the shortcomings of the above devices, but the normal pressure pyrolysis temperature is high, the safety is poor, the energy consumption is high, and the heating system is complicated to manufacture. Big

The gas produced by pyrolysis in the later stage of some devices uses water to directly absorb heat and condense into oil, causing direct contact between water and pyrolysis gas, resulting in secondary pollution of water

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