Preparation system and method of solid fuel for cement clinker production

A cement clinker and solid fuel technology, which is applied in the field of solid fuel preparation system for cement clinker production, can solve the problems of difficult utilization of gasified fly ash and high cost of fuel preparation, achieve effective utilization, reduce coal consumption, Easy to Build Effects

Pending Publication Date: 2020-10-02
KEDA MAS CLEAN ENERGY
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  • Abstract
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Problems solved by technology

[0006] Aiming at the problems that gasification fly ash, a by-product of coal gasification, is difficult to utilize and the cost of fuel preparation for cement clinker is high, the present invention provides a system and method for preparing solid fuel for cement clinker production

Method used

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  • Preparation system and method of solid fuel for cement clinker production

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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a solid fuel preparation system for cement clinker production includes a raw coal feeding device, which transports the raw coal to the coal grinding device; the raw coal feeding device is connected to the coal grinding device, and the coal grinding device Raw coal is ground into coal powder; the outlet of the coal grinding device is connected to the inlet of the fuel delivery device through the separation device, and the preparation system also includes a gasification fly ash feeding device, which is connected to the fuel delivery device through the separation device The device is connected, the raw coal and gasification fly ash are fully mixed and separated in the separation device, and the mixture obtained meets the fuel standard required for cement clinker production, and then is transported to the rotary kiln or calciner and other fuel-requiring facilities through the fuel delivery device. place to go. The system mixes gasified fly ash an...

Embodiment 2

[0048] Basically the same as in Example 1, in this implementation, a variable frequency star feeder 8 is also set between the screw feeder 7 and the pipeline, and the gasified fly ash is quantitatively transported to the frequency conversion star feeder through the screw feeder 7 8, and then through the secondary quantitative delivery of the frequency conversion star feeder 8 to the pipeline passing through the cyclone separator 10, the amount of gasified fly ash entering the pipeline is stable and accurate, and it is convenient to fully mix with coal powder. Furthermore, the top of the gasification fly ash bin 4 is provided with a collector 41, and the gasified fly ash produced by coal gasification enters into the gasification fly ash bin 4 through the collector 41 to ensure that the gasification fly ash enters the gasification fly ash bin 4. The sealing performance of the process of the gasification fly ash bin 4 avoids environmental pollution and waste caused by the leakage ...

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Abstract

The invention discloses a preparation system and method of solid fuel for cement clinker production, and belongs to the technical field of fuel preparation in cement clinker. In view of the problem that existing coal gasification by-product gasified fly ash is difficult to utilize and the preparation cost of the fuel required by the cement clinker is high, the invention provides a preparation system of solid fuel for cement clinker production. The preparation system comprises a raw coal feeding device which is connected with a coal milling device, and an outlet of the coal milling device is connected with an inlet of a fuel conveying device through a separation device. The preparation system further comprises a gasified fly ash feeding device which is connected with the fuel conveying device through the separation device. According to the invention, gasified fly ash and coal are mixed and pulverized to be used as rotary kiln fuel, so that the problem that gasified fly ash is difficultto utilize is solved, the coal consumption of cement clinker production is reduced, and the operation cost of cement production enterprises is reduced; the whole system is simple in structure and easyto build; and meanwhile, the preparation method provided by the invention is simple and convenient to operate and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of fuel preparation in cement clinker, and more specifically relates to a preparation system and method of solid fuel for cement clinker production. Background technique [0002] Coal gasification is one of the main technologies for clean and efficient utilization of coal. Fluidized bed gasification technology has uniform bed temperature, high heat and mass transfer performance, high gasification intensity, strong adaptability to coal types, and no tar and With the advantages of phenolic compounds, it has become one of the more advanced coal gasification technologies at present. However, when the fluidized bed gasification technology produces coal gas, a large amount of gasification fly ash with high carbon content and fine particle size will be produced in the process. The output of gasification fly ash is about 20% of the mass of raw coal. Accumulated gasification fly ash not only easily produces dust pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/36
CPCC10L5/04C10L5/363C10L2290/04C10L2290/28
Inventor 刘定超蒋芹孙肖茹郭海龙黄大中魏钊
Owner KEDA MAS CLEAN ENERGY
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