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Combined combustion system of chain boiler

A technology of combustion system and chain boiler, which is applied in the direction of combustion method, combustion type, combustion equipment, etc., can solve the problems of insufficient boiler output, excessive NOx emission, and low boiler efficiency.

Inactive Publication Date: 2016-08-17
UNIV OF SHANGHAI FOR SCI & TECH +1
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Problems solved by technology

[0003] In order to solve the technical problems of poor coal type adaptability, low boiler efficiency, insufficient boiler output and excessive NOx emissions existing in existing chain boilers, the present invention provides a new type of chain boiler composite combustion system

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  • Combined combustion system of chain boiler
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Embodiment Construction

[0016] In order to make the purpose, technical solutions and main points of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and typical embodiments.

[0017] like Figure 1 to Figure 3 As shown, the chain boiler compound combustion system of the present invention is composed of a pulverizing-powder conveying system, a flue gas recirculation system, an air supply system and a combustion system.

[0018] The pulverizing-pulverizing system mainly includes a coal hopper 1-1, a coal feeder 10, a fan coal mill 11, a coarse and fine powder separator 12, a circulating fan 14, a coal conveying pipeline 13 and a smoking pipeline 8. The coal in the coal hopper 1-1 falls on the chain grate 1-2 all the way under the action of its own gravity, moves slowly with the chain grate 1-2 and burns; the other way is sent to the fan coal mill through the coal feeder 10 11. The circulating fan 14 sucks part o...

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Abstract

The invention relates to a combined combustion system of a chain boiler. The combined combustion system comprises a pulverized coal making-pulverized coal conveying system, a smoke recirculating system, an air supply system and a combusting system; and a discharging opening of a coal hopper is divided into two paths, one path is connected with a chain fire grate, the other path feeds coal in the coal hopper into a fan coal mill through a coal feeder, a circulating fan is connected with an induced draft fan through a smoke pumping pipeline, the circulating fan pumps part of smoke from a flue of an induced draft fan outlet via the smoke pumping pipeline to serve as a drying agent of pulverized coal in the fan coal mill, and a coarse and fine pulverized coal separator is connected with a pulverized coal combustor through a pulverized coal conveying pipeline. The system is organically combined with the traditional combined combustion technology, the fuel grading combustion technology and the smoke recirculation technology, the problems that an existing chain boiler is poor in coal type adaptation, low in boiler combustion efficiency, insufficient in performance and slightly high in NOx emission are solved, and the clean, efficient and safe combustion manner is provided for the chain boiler.

Description

technical field [0001] The invention relates to a boiler with high efficiency combustion and pollutant emission reduction, in particular to a chain boiler and a composite combustion system with high efficiency, energy saving and emission reduction. Background technique [0002] Chain boilers are widely used in industrial production processes because of their stable operation and simple operation, and are very important thermal equipment in my country. The number of chain boilers is large and wide, accounting for more than 65% of all kinds of industrial boilers, and chain boilers generally have the problems of poor coal adaptability, low boiler efficiency, insufficient boiler output and excessive NOx emissions. SUMMARY OF THE INVENTION [0003] In order to solve the technical problems of poor coal adaptability, low boiler efficiency, insufficient boiler output and excessive NOx emission existing in existing chain boilers, the present invention provides a novel chain boiler ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C1/06F23C7/02F23C9/06
CPCF23C1/06F23C2201/30F23C2202/20
Inventor 赛庆毅张忠孝陈宝明
Owner UNIV OF SHANGHAI FOR SCI & TECH
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