Burning method and its device for burning irregular low ash smelting point fuel

A kind of ash melting point, irregular technology, applied in the fields of combustion method and equipment, combustion method and equipment for burning solid waste and biomass fuel, can solve the problems of large water content and large particle size, and achieve good emission, Effect of small temperature fluctuation and emission reduction

Inactive Publication Date: 2005-03-02
TSINGHUA UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a combustion method and combustion equipment for some biomass fuels or other solid wastes that are irregular, large in particle size, high in calorific value, high in water content, and low in ash melting point. It can further improve the combustion efficiency, enhance the stability of operation, and effectively solve the problems of ignition and slagging

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Embodiment Construction

[0017] The working principle, structure and best implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] The working principle of the present invention is as follows: In the present invention, a horizontal inclined rotating combustion chamber 5 is adopted, and a heat insulating layer 6 is arranged around the combustion chamber. After the normal operation of the combustion equipment, a high temperature zone is maintained in the combustion chamber. Since there is no need to arrange water-cooled walls in the furnace to absorb heat like chain furnaces and fluidized bed boilers, the heat balance equation can be expressed as:

[0019] Q r，w +Q r，a +Q r，k =Q 1 +Q 2 +Q 3 +Q 4 +Q 5

[0020] Among them: Q r，w : Calorific value of fuel kJ / h;

[0021] Q r，a Calorific value of auxiliary fuel kJ / h;

[0022] Q r，k Calorific value of combustion air kJ / h;

[0023] Q 1 The heat carried away b...

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Abstract

A combustion method for burning abnormal low ash fusion fuel, is of burning solid waste and biomass fuel method and apparatus technical field, using a horizontal type inclination and rotation combustion chamber. The invention keeps a inclination between 2 deg.C to 12 deg.C which is formed between the central axis of the combustion chamber with a insulating layer outside and horizontal plane; the abnormal ash fusion temperature fuel is burning in the combustion chamber, producing liquid slag; the liquid slag flows through the filtering slag apparatus at the end of the combustion chamber, then by disposal of granulation and clarification, the flue gas created enters a tailing flue and completes heat exchange. The invention using a horizontal type inclination and rotation combustion chamber and filtering slag apparatus and slag tapping method, solves the low ash fusion of fuel problem; and the slag tapping method, solves the inflammation problem successfully, raising the boiler operation stability. The invention has no special requirement to particle diameter of fuel, so the cost to dusting system is declined.

Description

technical field [0001] The invention relates to a combustion method and equipment thereof, and belongs to the technical field of combustion methods and equipment for burning solid waste and biomass fuel. Background technique [0002] With the development of the national economy, people pay more and more attention to resource and environmental issues. How to deal with some solid wastes and by-products of greening, and how to use renewable resources to provide energy has become an important issue. [0003] The development of renewable biomass as boiler fuel is one of the strategies to achieve sustainable development. For example, palm shell is a by-product of urban greening and agricultural production. Analysis shows that palm shell has a high calorific value, up to 4000kJ / kg, and no highly toxic pollutants such as dioxin will be produced during the combustion process. The ash in it It is rich in potassium and can be recycled and used as fertilizer. Because the palm shell i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/20F23G5/46F23J1/08F23J15/00
Inventor 张海侯祥松吕俊复岳光溪
Owner TSINGHUA UNIV
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