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Method for using rice hulls as fuel of cement kiln

A technology of cement kiln and rice husk, which is applied in the direction of combustion method, fuel supply, block/powder fuel preparation, etc. It can solve the problem that rice husk is not easy to burn completely, affects the quality of cement clinker, and the released calorific value is unstable, etc. problem, to achieve the effect of stable calorific value, complete combustion and quality improvement

Inactive Publication Date: 2011-07-13
中国中材海外科技发展有限公司
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Problems solved by technology

[0006] In the above-mentioned second application, the rice husk made into granules is not easy to burn completely, the carbon content of the ash is too high to be processed, and the calorific value released is also unstable, which easily affects the quality of cement clinker

Method used

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  • Method for using rice hulls as fuel of cement kiln
  • Method for using rice hulls as fuel of cement kiln
  • Method for using rice hulls as fuel of cement kiln

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Embodiment Construction

[0023] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. The above and other objects, features and advantages of the present invention will be apparent to those skilled in the art from the detailed description of the present invention.

[0024] Such as figure 1 Shown, the present invention comprises the following operations with rice husk as cement kiln fuel method:

[0025] a: send the rice husk into the rice husk forming machine for cold pressing;

[0026] In the pellet forming process a, the rice husk is at a certain temperature, and its main component lignin is softened, resulting in an increase in cohesive force. Under a certain pressure, the cellulose molecular clusters are dislocated, deformed, and extended, and the adjacent biomass particles inside are engaged with each other, recombined and pressed into shape.

[0027] Cold pressing can form various shapes of rice husks, such as...

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Abstract

The invention relates to a method for using rice hulls as fuel of a cement kiln, comprising the following steps: a, feeding the rice hulls into a rice hull forming machine, and carrying out cold-pressing forming; b, feeding the formed rice hulls in the procedure a into a grinder, and grinding; and c, feeding the ground rice hulls obtained in the procedure b into a burner of the cement kiln, and burning. After the method is adopted, the rice hulls can be used as an excellent alternative fuel of the cement kiln, so that the energies such as coal and heavy oil and the like can be saved, therefore, the method plays multiple roles in saving energy, utilizing waste, improving the economic benefits, protecting the environment and the like.

Description

technical field [0001] The invention relates to a method for using straw as a substitute fuel in a cement kiln, in particular to a method for using rice husk as a fuel for a cement kiln. Background technique [0002] Cement production generally uses coal, heavy oil and other energy sources as fuels. At present, countries all over the world are facing the severe challenge of energy depletion. Finding an alternative fuel has become a topic of active exploration and research by the cement industry in various countries. For a long time, research on the application of biomass fuels such as straw, especially rice husk, in cement plants has received extensive attention. [0003] At present, there are roughly two applications of rice husk in cement plants: [0004] 1. The rice husk is directly fed into the kiln for combustion, instead of being used as fuel, only the silica after the rice husk is completely burned is used as a cement auxiliary material. This method does not use rice...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00F23K3/00
Inventor 高超樊洁杨明友杨鑫周申燕王雪梅
Owner 中国中材海外科技发展有限公司
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