CN202303348U - Vertical powder burning industrial boiler with top combustor spraying downwards - Google Patents

Vertical powder burning industrial boiler with top combustor spraying downwards Download PDF

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Publication number
CN202303348U
CN202303348U CN2011203072056U CN201120307205U CN202303348U CN 202303348 U CN202303348 U CN 202303348U CN 2011203072056 U CN2011203072056 U CN 2011203072056U CN 201120307205 U CN201120307205 U CN 201120307205U CN 202303348 U CN202303348 U CN 202303348U
Authority
CN
China
Prior art keywords
powder
hearth
burner
industrial boiler
convection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011203072056U
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Chinese (zh)
Inventor
李玉静
施凯
冀飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ARREON ENTHALPY TECHNOLOGY Co Ltd
Original Assignee
ARREON ENTHALPY TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ARREON ENTHALPY TECHNOLOGY Co Ltd filed Critical ARREON ENTHALPY TECHNOLOGY Co Ltd
Priority to CN2011203072056U priority Critical patent/CN202303348U/en
Application granted granted Critical
Publication of CN202303348U publication Critical patent/CN202303348U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a medium-small size industrial boiler with a vertical hearth for combusting powder fuels including pulverized coal and the like. The industrial boiler comprises a powder burning combustor, a hearth, a burnout chamber and a convection flue, and is characterized in that: the powder burning combustor is arranged on the top of the hearth; and one side of the lower part of the hearth is connected with the convection flue through the burnout chamber. A single powder burning combustor or a plurality of powder burning combustors can be arranged on the top of the hearth, and the combustible powder fuels comprise solid-state powder fuels including the pulverized coal and pulverized biomass. After the powder catches fire in the combustor, the generated flames are blown downward to enter the hearth, flue gas generated in the hearth flows through the burnout chamber and the convection flue to be exhausted. Due to the vertical arrangement of the hearth, the floor area of the boiler is saved, the fuel flow and combustion time are prolonged, the burnout rate of the fuels is improved, dust deposition in the hearth is reduced, and the dust is facilitated to be removed.

Description

A kind of burner overhead is the vertical combustion powder Industrial Boiler of spray down
Technical field
The utility model relate to a kind ofly use various powder fuel, be used to supply steam or hot water combustion powder Industrial Boiler.
Background technology
China is a coal-fired big country, has 80% to be coal-burned industrial boiler in nearly 600,000 Industrial Boilers in the whole nation, and traditional coal-burned industrial boiler average operating efficiency is low, seriously polluted.Pulverized coal combustion is one of high performance clean burning mode of coal, because of the fuel that gets into boiler is powder, can well contact with oxygen; Sufficient combustion; Completing combustion rapidly, its efficiency of combustion even can be up to more than 98% be that other combustion systems institutes are unapproachable.It is quite general that coal dust firing is used on large-sized station boiler, and very ripe.In recent years, along with the continuous maturation and the development of powder combustion technology, the horizontal small Industrial Boiler of some coal dust burnings and living beings powder has appearred in the Industrial Boiler field.This boiler is a fuel with powders such as coal dusts, and furnace front is equipped with burner, owing to adopt horizontal burner hearth; Make that the burner hearth of this boiler is longer; So that it is bigger that boiler takes up an area of, and the dust stratification that produces in the running is difficult to eradicate, and moves improper cause easily dust stratification coking or dust stratification detonation.
Summary of the invention
To the deficiency of prior art, the utility model provides a kind of middle-size and small-size Industrial Boiler that is used to use the vertical furnace chamber of powder fuel.
The burner overhead is the vertical combustion powder Industrial Boiler of spray down, and it comprises combustion powder burner, burner hearth, burning chamber, convection pass, it is characterized in that: the combustion powder burner is arranged on roof of the furnace, and a side of lower furnace portion connects convection pass through burning chamber.
Described combustion powder burner is with fuel and air, sends into burner hearth according to certain hybrid mode, and make fuel can be in burner hearth the device of stable ignition and burning.The burner hearth of being told is to be surrounded the solid space that supplies fuel combustion by furnace wall.The effect of burner hearth is to guarantee that fuel burns as much as possible, and makes flue gas temperature of hearth outlet be cooled to the temperature that the convection heating surface trouble free service allows.For this reason, burner hearth should have enough spaces, and arranges enough heating surfaces.In addition, rational shape and size should be arranged, so that cooperate with burner, organize Furnace Aerodynamic Field, make flame not adherent, not high towards wall, degree of filling, the wall thermic load is even.Described burning chamber is the solid space that guarantees that fuel burns, and its effect is the flow process of prolong smoke, increases the time of fuel combustion, thereby reaches the purpose that fuel burns.Described convection pass is that internal placement is accepted flue gas heat with the heat convection mode and passed to the flue of the convection heating surface of working medium.
The combustion powder burner is installed in roof of the furnace, powder and air through burner mix catch fire after, the flame of generation one have strong swirling recirculation flow flow field effect jet downwards down, the entering burner hearth carries out suspension combustion.Be provided with the exhaust gases passes mouth between lower furnace portion and the burning chamber, the flue gas that produces in burner hearth exhaust gases passes mouth thus gets into burning chamber; Between burning chamber and the convection pass partition wall is set, this partition wall top is provided with the exhaust gases passes mouth; In the convection pass convection heating surfaces such as economizer, air preheater can be set.The dust stratification that produces in the combustion process can rely under the effect of gravity and fall voluntarily in the grey chamber of boiler bottom.
The powder fuel that uses comprises the solid powder fuel of coal dust, living beings powder, and the living beings powder is wood chip, shell powder, straw powder material.
The advantage of the utility model is:
1, prolongs fuel flow process and burning time, improve the burnout rate of fuel.The traditional vertical coal-burned industrial boiler is that flue gas turns to the entering convection pass in upper furnace from the lower furnace portion fire burns that making progress.The horizontal small industrial coal powder boiler is to burn to postignition from furnace front, and flue gas turns to the entering convection pass at the burner hearth rear portion.Both burning chamber are all very short or do not have, and present technique be from upper furnace downward fire burns, flue gas turns in lower furnace portion and gets into burning chamber; Turn to the entering convection pass again to burning chamber top; Burning chamber is very long, thereby has prolonged flow process and the burning time of fuel in stove, has improved the burnout rate of fuel; Fuel almost completely burns, and has eliminated black smoke.
2, the boiler floor space is saved in the vertical setting of burner hearth.Horizontal boiler is in order to guarantee burning of fuel, and burner hearth is longer, thereby causes body of heater longer, and the economizer of boiler or air preheater are difficult to arrange in the body of heater, generally needs to arrange separately that behind body of heater the boiler floor space is bigger.And for vertical structure, the burner hearth development that hoists, economizer or air preheater can be arranged in the body of heater; Taking up an area of very for a short time, is example with the 20t/h pulverized-coal fired boiler, horizontal layout; Body of heater takes up an area of 10m * 4.5m, take up an area of 15m * 4.5m after adding economizer, and vertical layout boiler takes up an area of only 9m * 3.5m.
3, can avoid coking in the stove, reduce the burner hearth dust stratification, be beneficial to deashing.For the boiler of horizontal chamber furnace (oven) bladder structure, there is not grey chamber below the burner hearth, in case dust stratification in the stove, deashing is difficulty.For the boiler of horizontal water pipe structure, grown by body of heater influences, and grey chamber is arranged more, deashing inconvenience.And receive structural limitations, the section of burner hearth of horizontal boiler, volume are all less, and the flue gas of eddy flow is swept wall easily, cause the coking of stove internal face.And vertical structure, burner hearth then can design more roomyly, and the flue gas of eddy flow is difficult for sweeping wall, and the dust stratification that produces in the combustion process can rely on and fall voluntarily in the grey chamber of boiler bottom under the effect of gravity, and grey chamber is less, easily cleaning.
Description of drawings
Fig. 1: the burner overhead is the general boiler structure sketch map 1 of spray down;
Fig. 2: the burner overhead is the general boiler structure sketch map 2 of spray down;
Fig. 3: the burner overhead is water spray jacket boiler structural representation down.
The specific embodiment one:
Embodiment 1, the utility model such as Fig. 1, described combustion powder burner 1 is installed in burner hearth 2 tops, and the flame that produces after powder catches fire in burner 1 is jetted downwards and is got into burner hearth 2; Between burner hearth 2 and the burning chamber 3 partition wall 5 is set, the bottom is provided with exhaust gases passes mouth 4, and the flue gas that produces in the burner hearth gets into burning chamber 3 by exhaust gases passes mouth 4; Between burning chamber 3 and the convection pass 7 partition wall 8 is set, this partition wall top is provided with exhaust gases passes mouth 6; The smoke convection heating surface is set in the convection pass 7, and the flue gas behind the heat convection is discharged through exhaust gases passes mouth 9.
Embodiment 2, the utility model such as Fig. 2, superheater or convection heating surface 10 are arranged in the top of burning chamber 3, other are with embodiment one.
Embodiment 3, the utility model such as Fig. 3; Described combustion powder burner 1 is installed in burner hearth 2 tops; Be made up of water leg around the burner hearth of being told 2, be provided with exhaust gases passes mouth 4 between burner hearth 2 bottoms and the burning chamber 3, the flue gas that produces in the burner hearth gets into burning chamber 3 by exhaust gases passes mouth 4; Burning chamber 3 tops are provided with convection heating surface, and the flue gas behind the heat convection is discharged through top exhaust gases passes mouth 10.

Claims (6)

1. the burner overhead vertical industrial boiler of spray down, it comprises combustion powder burner, burner hearth, burning chamber, convection pass, and it is characterized in that: described combustion powder burner is arranged on roof of the furnace, and a side of lower furnace portion connects convection pass through burning chamber.
2. burner overhead according to claim 1 is the vertical industrial boiler of spray down, it is characterized in that: at least two of powder burners of combustion are installed in roof of the furnace.
3. burner overhead according to claim 1 is the vertical industrial boiler of spray down, and it is characterized in that: be provided with the exhaust gases passes mouth between lower furnace portion and the burning chamber, partition wall is set between burning chamber and the convection pass, this partition wall top is provided with the exhaust gases passes mouth; The smoke convection heating surface is set in the convection pass.
4. burner overhead according to claim 3 is the vertical industrial boiler of spray down, and it is characterized in that: partition wall can be membrane wall or fire-resistant concrete walls or refractory brickwork.
5. burner overhead according to claim 1 is the vertical industrial boiler of spray down; It is characterized in that: constitute by water leg around the burner hearth; Be provided with the exhaust gases passes mouth between lower furnace portion and the burning chamber; Burning chamber top is provided with convection heating surface, and the flue gas behind the heat convection is discharged through top exhaust gases passes mouth.
6. burner overhead according to claim 1 is the vertical industrial boiler of spray down, and it is characterized in that: the powder fuel that uses comprises the solid powder fuel of coal dust, living beings powder, and the living beings powder is wood chip, shell powder, straw powder material.
CN2011203072056U 2011-08-23 2011-08-23 Vertical powder burning industrial boiler with top combustor spraying downwards Expired - Fee Related CN202303348U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203072056U CN202303348U (en) 2011-08-23 2011-08-23 Vertical powder burning industrial boiler with top combustor spraying downwards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203072056U CN202303348U (en) 2011-08-23 2011-08-23 Vertical powder burning industrial boiler with top combustor spraying downwards

Publications (1)

Publication Number Publication Date
CN202303348U true CN202303348U (en) 2012-07-04

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Application Number Title Priority Date Filing Date
CN2011203072056U Expired - Fee Related CN202303348U (en) 2011-08-23 2011-08-23 Vertical powder burning industrial boiler with top combustor spraying downwards

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121579A (en) * 2014-08-06 2014-10-29 北京大邦实创节能技术服务有限公司 Boiler provided with dual-register pulverized coal burner on top
CN105042556A (en) * 2015-05-27 2015-11-11 西安交通大学 Burner-overhead vertical U-structured oil and gas boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121579A (en) * 2014-08-06 2014-10-29 北京大邦实创节能技术服务有限公司 Boiler provided with dual-register pulverized coal burner on top
CN105042556A (en) * 2015-05-27 2015-11-11 西安交通大学 Burner-overhead vertical U-structured oil and gas boiler

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20170823

CF01 Termination of patent right due to non-payment of annual fee