CN205640857U

CN205640857U - Industrial boiler of no volatility or low -volatite coal of burning powder

Info

Publication number: CN205640857U
Application number: CN201620472246.3U
Authority: CN
Inventors: 王光绪; 郑爱侠
Original assignee: Shandong Huayuan Boiler Co Ltd
Current assignee: Shandong Huayuan Boiler Co Ltd
Priority date: 2016-05-20
Filing date: 2016-05-20
Publication date: 2016-10-12
Anticipated expiration: 2026-05-20

Abstract

The utility model discloses an industrial boiler of no volatility or low -volatite coal of burning powder belongs to the pulverized coal boiler field. Industrial production produced among the prior art coal ash and anthracite buggy have been overcome to it can't adapt to the defect that the burning that has combustor and boiler structure now required. It includes furnace, combustor, angled pipe structure water cooling system, high temperature air preheater, economizer and low temperature air heater, still includes the interior air distribution system of stove, air distribution system includes intercommunication furnace's more than two air distribution pipe in the stove, install the flow valve on the air distribution pipe. The utility model has the advantages of the overall structure compactness adapts to no volatility or the requirement of low volatility pulverized coal combustion, and the burning is stable, and the furnace lower part is the deposition not, and the leakproofness is good, and the steel consumes lowly and hydrologic cycle safe and reliable.

Description

Burn non-volatile point or the Industrial Boiler of low volatile pulverized coal

Technical field

This utility model belongs to a kind of boiler, specifically, particularly relates to the work of a kind of burn non-volatile point or low volatile pulverized coal Industry boiler.

Background technology

Along with developing rapidly of China's economy, energy-conserving and environment-protective require increasingly strict, and high performance clean burning industrial coal powder boiler technology exists Save the energy and environmental conservation aspect has unique advantage.In recent years, China obtained at industrial coal powder boiler applied technical field Breakthrough, boiler structure is varied；But coal burner and boiler adaptability are poor, typically require the volatilization of coal dust Divide content the highest more than 30%.And the coal dust of no or low volatile matter is such as: coal ash that commercial production produces and anthracite coal dust The combustion requirements of existing burner and boiler structure cannot be adapted to；On the one hand, the energy-efficient advantage of industrial coal powder boiler cannot Play, it is impossible to make rational use of resources；If on the other hand coal ash is mishandling, the waste energy even can cause environmental pollution.

Utility model content

This utility model purpose is to provide the Industrial Boiler of a kind of burn non-volatile point or low volatile pulverized coal, to overcome prior art The coal ash of middle commercial production generation and anthracite coal dust cannot adapt to the defect of the combustion requirements of existing burner and boiler structure.

This utility model realizes by the following technical solutions: the Industrial Boiler of a kind of burn non-volatile point or low volatile pulverized coal, Including burner hearth, burner, cornue constitution water cooling system, high-temperature air preheater, economizer and low-temperature air preheater, also wrap Including stove inner air-distributing system, described stove inner air-distributing system includes more than two aid distributing pipes connecting burner hearth, described aid distributing pipe is provided with Flow valve.

Described lower furnace portion uses the structure of variable cross-section.

Described cornue constitution water cooling system include surrounding fin panel casing, flag formula convection heating surface, corner tube boiler communicating pipe assembly and Upper drum.

4 major diameter down-comers are arranged in described cornue constitution water cooling system corner, and described down-comer connects drum and fin panel casing Lower header.

Compared with prior art, the beneficial effects of the utility model are: this utility model size of burner hearth according to boiler design parameter and The characteristic of burner is designed adjusting, and is equipped with stove inner air-distributing system simultaneously and ensure that the after-flame of coal dust；It addition, this boiler combines Cornue technology, distinct characteristics；Comprehensive described, this utility model has compact overall structure, adapts to non-volatile point or low volatilization Point coal dust firing requirement, flameholding, lower furnace portion not dust stratification, good airproof performance, the advantages such as steel consumption is low and safe water circulation is reliable.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

In figure: 1, burner；2, burner hearth；3, stove inner air-distributing system；4, surrounding fin panel casing；5, the convection current of flag formula is heated Face；6, corner tube boiler communicating pipe assembly；7, upper drum；8, high-temperature air preheater；9, economizer；10, Cryogenic air Preheater；11, down-comer.

Detailed description of the invention

The utility model is described in further detail below in conjunction with the accompanying drawings.

As it is shown in figure 1, the Industrial Boiler of a kind of burn non-volatile point or low volatile pulverized coal, including burner 1, burner hearth 2, angle Tubular construction water-cooling system, high-temperature air preheater 8, economizer 9 and low-temperature air preheater 10, also include stove inner air-distributing system 3, described stove inner air-distributing system 3 includes the aid distributing pipe of more than two connection burner hearths 2, described aid distributing pipe is provided with regulation air quantity big Little flow valve.Wherein, cornue constitution water cooling system includes surrounding fin panel casing 4, flag formula convection heating surface 5, corner tube boiler Communicating pipe assembly 6 and upper drum 7.

Burner hearth 2 uses variable cross-section to design, and in conjunction with unique stove inner air-distributing system 3, burner hearth 2 different cross section position flue gas flow rate is equal Even, air distribution is reasonable, contributes to coal dust classification and stably burns, burner hearth 2 bottom not dust stratification.

This utility model pulverized-coal fired boiler uses vertical cornue structure, and 4 major diameter down-comers are arranged in cornue constitution water cooling system corner 11, down-comer 11 connects upper drum 7 and the lower header of surrounding fin panel casing 4.

Operation principle of the present utility model: the high-temperature flue gas after burner 1 pre-burning enters burner hearth 2 and carries out radiation heat transfer, Jing Guoqi After formula convection heating surface 5 heat exchange, sequentially enter high-temperature air preheater 8, economizer 9 and low-temperature air preheater 10 and discharge, The cold air that burning needs after low-temperature air preheater 10 and high-temperature air preheater 8 heat through stove inner air-distributing system 3 points It is combustion-supporting that level enters burner hearth 2.

Claims

1. non-volatile point or an Industrial Boiler for low volatile pulverized coal of burning, including burner (1), burner hearth (2), cornue Constitution water cooling system, high-temperature air preheater (8), economizer (9) and low-temperature air preheater (10), it is characterised in that: Also include that stove inner air-distributing system (3), described stove inner air-distributing system (3) include the aid distributing pipe of more than two connections burner hearth (2), On described aid distributing pipe, flow valve is installed.

Non-volatile point of burning the most according to claim 1 or the Industrial Boiler of low volatile pulverized coal, it is characterised in that: described Burner hearth (2) bottom uses the structure of variable cross-section.

Non-volatile point of burning the most according to claim 1 or the Industrial Boiler of low volatile pulverized coal, it is characterised in that: described Cornue constitution water cooling system includes surrounding fin panel casing (4), flag formula convection heating surface (5), corner tube boiler communicating pipe assembly (6) With upper drum (7).

4. according to burning non-volatile point or the Industrial Boiler of low volatile pulverized coal described in claim 1 or 2 or 3, its feature It is: 4 major diameter down-comers (11) are arranged in described cornue constitution water cooling system corner, and described down-comer (11) connects respectively Connect drum (7) and the lower header of surrounding fin panel casing (4).