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Integrated direct-fired pulverizing system with coal drying and water recovery functions

A pulverizing system and water recovery technology, which is applied in the direction of drying solid materials, drying, block/powder fuel preparation, etc., can solve the problems of non-recycling and waste of water resources, reduce operating costs and increase combustion efficiency , The effect of reducing investment costs

Inactive Publication Date: 2015-09-23
BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated direct-blown pulverization system with coal drying and water recovery functions, so as to solve the technical problem that the water in the coal raw material is not recovered during the pulverization process, and water resources are wasted

Method used

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  • Integrated direct-fired pulverizing system with coal drying and water recovery functions
  • Integrated direct-fired pulverizing system with coal drying and water recovery functions
  • Integrated direct-fired pulverizing system with coal drying and water recovery functions

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Embodiment Construction

[0038] Hereinafter, an embodiment of the integrated direct blowing pulverization system with coal drying and water recovery functions of the present invention will be described with reference to the accompanying drawings.

[0039] The examples described here are specific specific implementations of the present invention, and are used to illustrate the concept of the present invention. They are all explanatory and exemplary, and should not be construed as limiting the implementation of the present invention and the scope of the present invention. In addition to the embodiments described here, those skilled in the art can also adopt other obvious technical solutions based on the claims of the application and the contents disclosed in the description, and these technical solutions include adopting any obvious changes made to the embodiments described here. Replacement and modified technical solutions.

[0040] The accompanying drawings in this specification are schematic diagrams...

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Abstract

The invention discloses an integrated direct-fired pulverizing system with coal drying and water recovery functions. The integrated direct-fired pulverizing system comprises a water recovery subsystem and a pulverizing subsystem, the water recovery subsystem comprises a coal bunker, a dryer and a water recovery heat exchanger, the dryer comprises a dryer coal inlet, a dryer gas outlet and a dryer solid outlet, the dryer coal inlet is communicated with an outlet of the coal bunker, and the water recovery heat exchanger is communicated with the dryer gas outlet. The pulverizing subsystem comprises a medium-speed mill direct-fired pulverizing device, and the water recovery subsystem is close to the pulverizing subsystem. Water in brown coal is recycled, a drying device and an original pulverizing system of a power plant are integrated, long-distance dry pulverized coal transportation is omitted, the integrated direct-fired pulverizing system is safer and more reliable, and the investment cost of the pulverizing system, a flue gas and air system and a boiler of the power plant is correspondingly reduced. Dry coal directly enters a coal mill through a coal feeder, a middle coal bunker is omitted, and hidden danger is effectively eliminated.

Description

technical field [0001] The invention belongs to the technical field of electric energy, and in particular relates to an integrated direct blowing pulverizing system with functions of coal drying and water recovery. Background technique [0002] The pulverizing system used in industry can be divided into two categories: traditional closed lignite pulverizing system and open pulverizing system. The closed pulverizing system refers to the pulverizing system in which the gas-powder two-phase fluid carrying qualified fineness coal powder is drawn from the coal mill through the coarse powder separator as the primary air, and is directly blown into the furnace through the burner. For the consideration of safe pulverization and reducing power consumption of coal pulverization, large-scale lignite boilers generally choose fan mill or medium-speed pulverization system. The blowing pulverizing system belongs to the traditional closed pulverizing system, and has the common disadvantage...

Claims

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Application Information

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IPC IPC(8): F23K1/00F26B25/00
CPCY02P70/10
Inventor 蒙涛常少英张琴陆诗原杨东刘鸿飞王春晖张安荣
Owner BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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