Raw coal bin system and operation method adapting to flexible blending of fuel of coal-fired boiler

A technology for coal-fired boilers and raw coal bunkers, applied in the field of raw coal bunker systems, can solve problems such as the unrealistic operation mode of changing mills, and achieve the effects of reducing fuel costs, improving power generation efficiency, and improving stable combustion capabilities
CN110282274APending Publication Date: 2019-09-27XIAN THERMAL POWER RES INST CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN THERMAL POWER RES INST CO LTD
Publication Date
2019-09-27

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Abstract

The invention discloses a raw coal bin system and operation method adapting to flexible blending of fuel of a coal-fired boiler and belongs to the field of coal conveying and feeding system equipment of the coal-fired boiler. The system comprises a left side coal bin, a right side coal bin, a wear-resisting middle partition plate, a hydraulic inserting plate valve, a hydraulic station, a hyperbolical coal falling opening, an air cannon, a coal bin guided wave radar level gauge, coal conveying belts, a manhole door, a coal feeder, a coal falling opening and the like. According to the system, the wear-resisting middle partition plate divides the raw coal bin into two coal bins, the middle partition plate is provided with an H-shaped support plate, a stainless steel lining plate and the like, by means of the two coal conveying belts, different kinds of fuel are conveyed into two different coal bins, individual inserting doors are arranged for the two coal bins correspondingly, the hydraulic station is controlled remotely to drive the hydraulic inserting plate valve to be opened and closed, two kinds of fuel can be conveyed to the coal feeder flexibly, and flexible switching of the fuel of the boiler is achieved. According to the system and the method, accurate blending of multiple kinds of coal can be achieved, and safety and economy of unit operation are improved.
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Description

technical field

[0001] The invention belongs to the technical field of coal conveying and coal feeding system equipment for boilers of thermal power units, and in particular relates to a raw coal bunker system and an operation method suitable for flexible blending of coal-fired boiler fuels. Background technique

[0002] my country's coal resources are unevenly distributed and of various types. In order to ensure production or improve operating efficiency, thermal power enterprises often passively or actively blend non-design coal. Coal blending and blending combustion technology has become an important means to improve the safety, environmental protection and economy of thermal power generation units. The primary principle of coal blending combustion is to ensure the combustion performance of the coal blending process, that is, to ensure the combustion stability of the blended coal in the boiler. The combustion characteristics of coal are mainly ignition performance and e...

Claims

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