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A spray-swirl stacking multi-point incoming material recycling type decomposition furnace

A decomposition furnace and recirculation technology, applied in furnaces, vertical furnaces, furnace types, etc., to achieve the effects of increasing decomposition rate, eliminating system crust, and reducing initial concentration

Active Publication Date: 2018-02-09
甘肃土木工程科学研究院有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

In addition, the invention also solves the adaptability of the calciner to the natural environment under different altitude conditions

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  • A spray-swirl stacking multi-point incoming material recycling type decomposition furnace
  • A spray-swirl stacking multi-point incoming material recycling type decomposition furnace

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Embodiment Construction

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. However, those skilled in the art know that the present invention is not limited to the drawings and the following embodiments.

[0046] The lowest level cyclone of the cyclone preheater system mentioned in the present invention refers to the lowest level of cyclone arranged from top to bottom in the cyclone preheater system, which is C 4 , for a 5-stage cyclone preheater is C 5 , for a 6-stage cyclone preheater is C 6 . The so-called penultimate cyclone of the preheater system refers to the penultimate cyclone arranged from top to bottom at all levels of the cyclone preheater system. For a 4-stage cyclone preheater, it is C 3 , for a 5-stage cyclone preheater is C 4 , for a 6-stage cyclone preheater is C 5 . The...

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Abstract

The invention relates to a spouting-cyclone overlapping multi-point material feeding recycling type decomposing furnace. The spouting-cyclone overlapping multi-point material feeding recycling type decomposing furnace comprises a decomposing furnace body (1), a gooseneck (2) and a material separation and circulation device (3) which are connected in sequence; the material separation and circulation device is further connected with the decomposing furnace body; and the gooseneck is connected with a cyclone (CN). Through arrangement of three smoke throats and wind and coal in three tangential directions, smoke, material powder and coal powder form three times of spouting effects and three cyclone effects inside the furnace and an overlapping effect of spouting and cyclone, the concentration of the material powder in airflow inside the furnace is far higher than the inlet or outlet concentration, the material-gas ratio inside the furnace is improved, the stay time of the material powder and coal powder inside the furnace is greatly prolonged, the heat exchange efficiency is further improved, and the burnout rate of the coal powder is improved. The spouting-cyclone overlapping multi-point material feeding recycling type decomposing furnace is suitable for new construction and improvement of an existing cement preheating pre-decomposing system, and can also be applied to a powdery material heat exchange system in metallurgy and chemical industries.

Description

technical field [0001] The invention belongs to the technical field of cement thermal equipment, and in particular relates to a spray-rotation superimposed multi-point incoming material recirculation type decomposition furnace. Background technique [0002] At present, the new dry process cement is developing rapidly, and the consumption and dependence on energy are still strong. It is imperative to use low-priced low-quality bituminous coal as the fuel for cement clinker calcination. in progress. Therefore, it is necessary to study the combustion characteristics of low-quality bituminous coal and anthracite, and on this basis, develop a preheating and pre-decomposition system with excellent performance to meet the calcination requirements of low-quality bituminous coal and anthracite. [0003] Harmful components of raw fuel in the production of new dry process cement will cause damage such as crusting in the calciner, resulting in a reduction in clinker production and syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B1/16F27B1/22
CPCY02P20/10
Inventor 周应庆
Owner 甘肃土木工程科学研究院有限公司
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