Method for preparing alternative fuel for cement kiln by using composite material waste

A technology of composite materials and alternative fuels, which is applied in the direction of combustion methods, block/powder fuel preparation, fuel supply, etc., can solve the problems of fuel and FRP composite waste disposal, high energy consumption, etc., and achieve coal saving, Realize the effects of circular economy and stable combustion conditions

Inactive Publication Date: 2012-07-25
BEIJING JINYU MANGROVE ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0010] The purpose of the present invention is to provide a method of using FRP composite waste to prepare cement kiln substitute fuel, so as to solve the problem of difficult disposal of FRP composite waste, and at the same time solve the fuel problem caused by high energy consumption in the cement industry

Method used

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Embodiment Construction

[0026] The invention processes FRP waste into an alternative fuel suitable for burning in cement kilns through a series of treatment procedures, and at the same time solves the problem that FRP waste is difficult to recycle and dispose of and the problem of high energy consumption in cement production, which not only achieves the purpose of protecting the environment, but also Comprehensive utilization of waste resources.

[0027] Due to the high hardness and toughness of FRP, not all FRP waste is suitable for making alternative fuels. Therefore, it is necessary to select materials suitable for FRP crushing through a sorting process before entering the crushing process.

[0028] Sorting criteria: (1) The average thickness does not exceed 50mm; (2) The thickest thickness does not exceed 100mm; (3) Does not contain iron or similar metal substances; (4) The volume ratio of the attached plastic film does not exceed 60%.

[0029] Sorting significance: FRP composite materials that a...

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Abstract

The invention provides a method for preparing alternative fuel for a cement kiln by using composite material waste. A glass reinforced plastic composite material waste is crushed into grains with a grain diameter less than 20mm or slices to be used as the alternative fuel; the alternative fuel is sent into a preburning furnace of the cement kiln and is burnt under a pressure of -500Pa to -800Pa; or the alternative fuel is sprayed into the cement kiln from a multichannel burner at the head of the cement kiln. Through the method provided by the invention, the difficulty in treatment of the glass reinforced plastic composite material waste can be overcome and the fuel problem caused by high energy consumption of the cement industry can be solved.

Description

technical field [0001] The invention relates to a method for preparing cement kiln substitute fuel, in particular to a method for preparing cement kiln substitute fuel by using composite material waste. Background technique [0002] Fiberglass reinforced plastic (FRP) products are synthetic composite materials consisting of fiber polymers encapsulated in a polymer matrix. The reinforcement material used is usually glass fiber, but aramid fiber (Kevlar) or carbon fiber can also be used as reinforcement material, which is widely used in various industries due to its light weight, high strength, and corrosion resistance. . Generally, the service life of FRP products is about 10-15 years. After a long period of use, the FRP materials used in the early stage are gradually eliminated and become solid waste. The amount of waste and leftovers generated during the production and processing of FRP products is also increasing year by year with the widespread use of FRP products. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00F23K3/00
Inventor 田巍姜雨生熊运贵刘超刘佳李继荣
Owner BEIJING JINYU MANGROVE ENVIRONMENTAL PROTECTION TECH
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