CN208418710U - It is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air - Google Patents
It is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air Download PDFInfo
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- CN208418710U CN208418710U CN201821097826.4U CN201821097826U CN208418710U CN 208418710 U CN208418710 U CN 208418710U CN 201821097826 U CN201821097826 U CN 201821097826U CN 208418710 U CN208418710 U CN 208418710U
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- burner hearth
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Abstract
The utility model discloses it is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air, it is characterized in that, including the shell for being connect with two, tertiary air ventilation opening, the shell upper and lower ends are provided with interconnecting piece, the interconnecting piece with burner hearth sidewall for connecting, the ventilation unit to burner hearth inner bulge is provided on shell, the ventilation unit is provided with multiple rows of air inlet hole towards burner hearth on one side, the air holes diameter that often discharges into successively is gradually reduced in the horizontal direction, and the diameter for often discharging into air holes is also successively reduced in the vertical direction.The application is using big small-bore matched air inlet, and the diameter mouth of ventilation is arranged by staged, so that turbulent combustion layer is formed on cross section where circulating ventilation equipment, so as to which the burn-off rate of substance is effectively turned up, and the effectively dustiness in reduction system.
Description
Technical field
The utility model relates to a kind of ventilation equipment for circulating fluidized bed boiler, in particular to a kind of for recycling sulphur
Fluidized bed boiler two, the circulating ventilation equipment of tertiary air.
Background technique
Circulating fluidized bed boiler is the highest clean coal combustion technology of industrialization degree.Circulating fluidized bed boiler uses fluidised form
Change burning, primary structure includes that combustion chamber and circulation melt down two large divisions.Distinguishing with the maximum of bubbling fluidized bed combustion technology is
Operating air velocity is high, enhances the heterogeneous reactions process such as burning and desulfurization, boiler capacity can be expanded to power industry and can connect
The large capacity received is currently, circulating fluidized bed boiler underlying issues such as very good solution calorifics, mechanics, materialogy and swollen
The engineering problems such as swollen, abrasion, overtemperature become the advanced technology of fire retardant solid fuel using energy source.
Existing circulating fluidized bed boiler is always with efficient and famous, in the prior art, be the quadrangle in furnace with
And opposite two sides are carried out through heavy caliber to carrying out air feed in furnace, but are existed using this air supply mode in problems, example
Such as, during to furnace ventilation, due to air circulation is big, air quantity flow rate is high, it often will lead to the burn-off rate of flue gas
Not high, the excessive drawback of circulated air dustiness, so that the service efficiency of boiler is had a greatly reduced quality, the above problem is that this field needs to solve
Certainly the problem of.The problem of above problem is this field urgent need to resolve.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of raising combustion rates, the two of reduction dustiness, tertiary air
It is dedicated it is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air.
In order to solve the above-mentioned technical problem, technical solution provided by the utility model is: a kind of be used for circulating fluid-bed pot
Furnace two, the circulating ventilation equipment of tertiary air, which is characterized in that including the shell for being connect with two, tertiary air ventilation opening, institute
It states shell upper and lower ends and is provided with interconnecting piece, the interconnecting piece is provided on shell into burner hearth for connecting with burner hearth sidewall
The ventilation unit of side protrusion, the ventilation unit are provided with multiple rows of air inlet hole towards burner hearth on one side, and the air holes diameter that often discharges into exists
It is successively gradually reduced in horizontal direction, and the diameter for often discharging into air holes is also successively reduced in the vertical direction.
Further, the aperture direction of the adjacent air inlet hole is staggered up and down.
Further, the adjacent two air inlet diameter ratios of the same row are 3:2.
The beneficial effects of the utility model are: the application is using big small-bore matched air inlet, and by the diameter of ventilation
Mouth is arranged by staged, so that turbulent combustion layer is formed on the cross section where circulating ventilation equipment, so as to effectively adjust
The burn-off rate of high substance, and the effectively dustiness in reduction system.
Detailed description of the invention
Fig. 1 is the application circulating ventilation equipment side view.
Fig. 2 is the front view of the application circulating ventilation equipment.
Fig. 3 is the schematic diagram that the application is set in burner hearth.
Label is in figure: burner hearth 1, ventilation opening 2, circulating ventilation equipment 3, shell 31, ventilation unit 32, air inlet hole 33.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
As shown in figures 1 and 3, a kind of circulating fluidized bed boiler, including rectangular burner hearth 1, on 1 inner sidewall of burner hearth
Offer ventilation opening 2.Secondary air devices are connected to ventilation opening 2 and are passed through Secondary Air to it, are passed through Secondary Air in burner hearth 1 and are used for
Substance full combustion in burner hearth 1 is helped, wherein the outer circulating ventilation equipment for being equipped with annular for one week around 1 side wall of burner hearth of ventilation opening 2
3.Specifically, the circulating ventilation equipment 3 includes shell 31, the structure of the shell 31 is similar with channel steel, 31 upper and lower ends of shell
For vertical portion, shell 31 is fixed in the inner sidewall of burner hearth 1 by vertical portion, 31 upper and lower ends of shell and 1 side of burner hearth
Wall is connected, and 31 middle part of shell constitutes ventilation unit 32 to 1 inner bulge of burner hearth, to form a hollow cavity in the inside of shell 31
Room, in the hollow chamber that wind is passed into shell 31 by ventilation opening 2 by secondary air devices, the ventilation unit 32 is towards burner hearth
1 is provided with multiple rows of air inlet hole 33 on one side, due to the air inlet directly opposite with overfiren air port when wind enters in shell 31
Smaller, wind will not all be gone out by the air inlet, and can gradually fill completely entire toroidal shell 31, so that being located in shell 31
Air-flow entered in burner hearth 1 from each air inlet being dispersed on shell 31,33 diameter of air holes that often discharges into is by ventilation opening 2
Start successively to be gradually reduced, and the diameter for often discharging into air holes 33 is also successively reduced from top to bottom.It is same in a kind of embodiment
The air inlet of row is sequentially reduced along the diameter clockwise of shell 31, and the maximum ventilation opening 2 of next row diameter need to be less than above chapter most
Small diameter, specifically, the ratio of two adjacent 2 diameters of ventilation opening is 3:2.
The application is arranged using big small-bore matched air inlet, and by the diameter mouth of air inlet by staged, so that wind
Amount and wind speed are all gradually reduced in staged, therefore can form turbulent combustion on the cross section where circulating ventilation equipment 3
Layer, by the way that multiple rows of, multiple air inlet holes 33 are arranged, air-flow is entered by ventilation equipment in the hollow chamber of shell 31, by entering the wind
Hole 33 disperses these air-flows, and the flow velocity of air-flow is greatly reduced in the case where not reducing tolerance, makes turbulent combustion layer whole
A cross section is covered, and so as to effectively improve efficiency of combustion, and makes substance uncombusted in furnace in specific region
Interior full combustion, due to the presence of turbulent area, its dustiness is greatly reduced when circulated air passes through, from can make circulating fluid-bed
Boiler rear end is restrained incrustation and is reduced, and tube bank abrasion can be effectively reduced, and the thermal efficiency greatly improves.It is computed, adjacent air inlet
Diameter proportion is that be formed by turbosphere best by 3:2.
Further, flue gas system further includes wind devices three times for shipped material in some embodiments, wherein
The ventilation opening 2 being connected to wind devices three times is additionally provided on burner hearth 1, the ventilation opening 2 that should be connected to wind devices three times is provided with furnace
The upper end of thorax 1, the ventilation opening 2 is outer to be also equipped with above-mentioned circulating ventilation equipment 3 around burner hearth 1 one weeks, so as to further subtract
Few flue dust.
The application improves the efficiency of combustion of the application extremely by existing 55% by being provided with circulating ventilation equipment 3
70%.
In order to further form turbosphere, the air inlet hole 33 is horizontal by certain angle, it is preferred that in order to more preferable
Ground forms turbosphere, two adjacent air inlet holes 33 of the same row with the angle that horizontal plane is in is positive and negative is arranged alternately, i.e. phase
Adjacent two air inlets one is arranged upward, another is arranged downward, and all air inlets of the row are then.
The application can effectively improve after-flame effect by setting Secondary Air and the dedicated circulating ventilation equipment 3 of tertiary air
Rate reduces dustiness.
Embodiment described above is only the preferred embodiment lifted to absolutely prove utility model, the guarantor of utility model
It is without being limited thereto to protect range.Those skilled in the art made equivalent substitute or transformation on the basis of utility model, exist
Within the protection scope of utility model.The protection scope of utility model is subject to claims.
Embodiment described above is only the preferred embodiment lifted to absolutely prove utility model, the guarantor of utility model
It is without being limited thereto to protect range.Those skilled in the art made equivalent substitute or transformation on the basis of utility model, exist
Within the protection scope of utility model.The protection scope of utility model is subject to claims.
Claims (3)
1. it is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air, which is characterized in that including for
Two, the shell of tertiary air ventilation opening connection, the shell upper and lower ends are provided with interconnecting piece, and the interconnecting piece is used for and burner hearth side
Wall connects, and the ventilation unit to burner hearth inner bulge is provided on shell, and the ventilation unit is multiple rows of towards being provided on one side for burner hearth
Air inlet hole, the air holes diameter that often discharges into successively are gradually reduced in the horizontal direction, and often discharge into the diameter of air holes in vertical side
It also successively reduces upwards.
2. it is as described in claim 1 it is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air, feature
It is, the aperture direction of the adjacent air inlet hole is staggered up and down.
3. it is as described in claim 1 it is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air, feature
It is, two adjacent air inlet diameter ratios of the same row are 3:2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821097826.4U CN208418710U (en) | 2018-07-11 | 2018-07-11 | It is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821097826.4U CN208418710U (en) | 2018-07-11 | 2018-07-11 | It is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208418710U true CN208418710U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821097826.4U Active CN208418710U (en) | 2018-07-11 | 2018-07-11 | It is a kind of for circulating fluidized bed boiler two, the circulating ventilation equipment of tertiary air |
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| CN (1) | CN208418710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010867A1 (en) * | 2018-07-11 | 2020-01-16 | 苏州金洋环保科技有限公司 | Circulating fluid bed boiler |
-
2018
- 2018-07-11 CN CN201821097826.4U patent/CN208418710U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010867A1 (en) * | 2018-07-11 | 2020-01-16 | 苏州金洋环保科技有限公司 | Circulating fluid bed boiler |
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