Method for substituting cement kiln fuel with garbage derived overtails

A waste-derived and derived sieve technology, which is applied in the energy field, can solve environmental pollution and other problems, and achieve the effect of long passing time and increased calorific value

Active Publication Date: 2008-05-07
LINGCHUAN JINYU CEMENT
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Problems solved by technology

[0004] The purpose of the present invention is to solve the environmental pollution problems in waste treatment and the technical problems of using fuel substitutes in cement production, organically combine waste treatment with cement production, and replace cement kiln production with waste-derived oversize The fuel can not only realize the harmless treatment of waste, protect the environment, but also realize the comprehensive reuse of waste resources, which is in line with the development direction of circular economy, has far-reaching social significance and good development prospects

Method used

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  • Method for substituting cement kiln fuel with garbage derived overtails

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Embodiment Construction

[0023] Shown in Fig. 1 is the technological process of an embodiment of the present invention, at first house refuse is sub-sieved, and the main composition of the obtained garbage derived oversize is: waste cotton fabrics, straw and plastics, and the garbage derived oversize After preliminary crushing, it is packed into cylindrical garbage bags weighing about 1.5 tons. After being transported to the factory area by a transport vehicle, it is lifted to the platform bag breaker in the pretreatment workshop, and then crushed by a crusher. In this example, German-made automatic garbage bags are used. The crusher generally adopts two-stage or three-stage crushing, and the crushing particle size is less than 60mm×60mm, preferably 50mm×40mm. It is stirred and mixed to make it uniform. One part is transported to the pre-combustion furnace for combustion, and the other part is sprayed into the cement kiln from the kiln head through the multi-channel coal injection pipe, so that the was...

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Abstract

The invention relates to a method for adopting waste derivative oversize material as substitute for cement kiln fuel, which is characterized in that the domestic waste in refuse reclamation station is separated and sorted, broken in packages, crushed and completely stirred and mixed, one part of the waste enters a precombustion furnace in the kiln tail of a cement kiln for combustion, while the other part of the waste enters the cement kiln from the kiln hood for combustion, thus the substitute fuel for cement production is produced. The invention has the advantages that the waste derivative oversize material having calorific value is adopted to substitute for industrial fuel in the cement kiln, thus resources of waste derivative oversize material are fully utilized, and coal energy resources are saved; simultaneously the cement kiln has the characteristics of high temperature, large carrying capacity, no residue after waste treatment and no secondary pollution, therefore the invention has the great advantages of energy saving and environmental protection.

Description

technical field [0001] The invention relates to a method for replacing cement kiln fuel with waste-derived oversize, belonging to the field of energy. Background technique [0002] The cement industry is a typical large energy consumer and mainly uses raw coal as fuel. However, the supply of raw coal is getting tighter and the cost of cement production is gradually increasing. Therefore, the problem of how to reduce the energy consumption of cement production and find alternative fuels needs to be solved urgently . At present, the emerging waste resource utilization technology uses waste to replace raw and fuel materials, mainly to replace the fuel produced by cement with combustible waste, which can alleviate the rise in fuel prices caused by the energy crisis and reduce production costs. Therefore, the use of MSW-derived sieve to replace fuel technology can be popularized and applied in our country. [0003] However, there are many problems with using refuse-derived over...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/46C04B2/10
CPCY02E50/30Y02E50/10C04B7/4423Y02P40/125
Inventor 赵启纲熊运贵张觊甘喜保
Owner LINGCHUAN JINYU CEMENT
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