CN206037025U - Stifled device of preventing that is used for separator and material returning device in biomass circulating fluid bed boiler - Google Patents
Stifled device of preventing that is used for separator and material returning device in biomass circulating fluid bed boiler Download PDFInfo
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- CN206037025U CN206037025U CN201621074614.5U CN201621074614U CN206037025U CN 206037025 U CN206037025 U CN 206037025U CN 201621074614 U CN201621074614 U CN 201621074614U CN 206037025 U CN206037025 U CN 206037025U
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Abstract
The utility model discloses a stifled device of preventing that is used for separator and material returning device in biomass circulating fluid bed boiler, including separator and material returning device, prevent stifled device and locate separator and material returning device's bottom respectively, prevent that stifled device includes female pipe of air distribution and the directional hood of a plurality of, the female pipe upper end intercommunication of air distribution has at least one air distribution pipe, directional hood is linked together with air distribution pipe. Has following advantage: realized that separator and material returning device smoothly carry the circulation material, guaranteed whole material circulation system reliable continuous operation for a long time, had the high technological advantages of the good reliability of the economic nature of equipment.
Description
Technical field
This utility model belongs to Sector of Cfb Boilers, in particularly a kind of biomass recirculating fluidized bed boiler
For separator and the anti-block apparatus of material returning device.
Background technology
Due to a large amount of energy shortages caused using Fossil fuel and ecological deterioration problem, biomass energy is in boiler
Consequence is occupied in fuel.Used as large agricultural country, annual agricultural crop straw yield is about 6.5 hundred million tons, it is contemplated that arrive for China
It is up to 7.26 hundred million tons within 2010；In fuel wood and forestry waste stock number, exploitable deposit reaches more than 600,000,000 tons every year.Every year
In the direct burning in field more than 200,000,000 tons, this not only wastes resource to the remaining agricultural crop straw that cause cannot be processed, and causes
Serious air pollution.For realizing sustainable energy generation and reducing the purpose of greenhouse gas emission, China is in January, 2006
Come into effect《People's Republic of China's Renewable Energy Law》, it is the extensive using offer system of the regenerative resources such as biomass energy
And judicial guarantee.According to the target that China new and renewable sources of energy development outline is proposed, to 2010, China's biomass energy
Capacity of installed generator will be more than 3000MW.Realization of the research and exploitation of biomass fermentation electric boiler to this target has decisive
Impact.
The fuel tolerance of CFBB itself is wide, and load regulation range is big, easy to operate and low NOx drainage
The features such as, can the characteristic such as preferably adapted biomass fuel Gao Shui, low ash, burning be rapid, biomass fuel can be effectively improved
The efficiency of combustion of material, thus circulating fluidized bed technique be effective way that biomass are developed as clean energy resource it
One.
Biomass fuel moisture is high and with seasonal variations, and volatile content is high, and fuel ignition temperature is relatively low, typically exists
Fugitive constituent just a large amount of precipitations at a temperature of 250～350 DEG C, and start vigorous combustion, flue gas is produced in the middle and lower part region of combustor
There is the phenomenon of melting coking in high-temperature area, biomass fuel that high temperature can cause fusing point relatively low, serious meeting cause burner hearth and
Internal heat equipment large area hangs burnt impact equipment safety, must blowing out cleaning；Fugitive constituent separate out burn after, by ashes parcel and
The difficult impact of air penetration, coke granule burning velocity are slow, burn difficulty, and due to biomass fuel density it is little, easily
Burner hearth is carried from by flue gas, into cyclone separator, as the flying dust bulk density of biomass fuel is little, poor fluidity holds
Easily put up a bridge, caking property is larger, be highly susceptible to piling up into the coking of burner hearth section in separator blanking cone section region and material returning device, from
And the Matter Transfer of whole material circulating system has been blocked, cause boiler plant run, it is necessary to carry out shutdown maintenance, to use
Cause economic loss and safety worries in family.
Utility model content
Technical problem to be solved in the utility model is to provide in a kind of biomass recirculating fluidized bed boiler for separating
The anti-block apparatus of device and material returning device, solve biomass fuel recirculating fluidized bed pot recycle stock blocking separator and material returning device
Problem, realize cyclone separator and the smooth conveying recycle stock of material returning device, it is ensured that whole material circulating system can be long-term
Reliable continuous operation, with the high technical advantage of equipment good economy performance reliability.
For solving above-mentioned technical problem, in the biomass recirculating fluidized bed boiler that this utility model is provided for separator and
The anti-block apparatus of material returning device, it includes separator and material returning device, and the anti-block apparatus are respectively arranged on the bottom of separator and material returning device
Portion；The anti-block apparatus include air distribution main pipe and several wind caps, and the air distribution main pipe upper end is communicated with least one and matches somebody with somebody
Wind is managed, and the wind cap is connected with the sub- pipe of air distribution.
Preferably, the air distribution main pipe lower end is provided with suspended body flowmeter and damper.Can be according to different biomass fuels
The characteristic of material, and the characteristic of its circulation flying dust, adjust the aperture of damper, control the air-flow stream of wind cap outlet
Speed, is demarcated by suspended body flowmeter, can so set up the purging wind control data of suitable various biomass fuels, it is ensured that
Separator and material returning device system adapt to the burning operation of every kind of bio-fuel.
Preferably, the air distribution main pipe is provided with about the two air distribution pipes being parallel to each other, on the sub- pipe of each air distribution
Multiple wind caps are provided with, heat resistant and wear resistant are provided with the cone section region of separator and are damaged erosion-resisting separator inner furnace wall, it is multiple
Wind cap along separator inner furnace wall it is circumferentially distributed, and be embedded in separator inner furnace wall, wind cap blows into separator,
And air port air-flow is obliquely.
Preferably, the air distribution main pipe is provided with about the three air distribution pipes being parallel to each other, on the sub- pipe of each air distribution
Multiple wind caps are provided with, heat resistant and wear resistant are provided with the bottom section of material returning device and are damaged erosion-resisting material returning device inner furnace wall, orientation
Blast cap is located at the bottom of the material returning device of material returning device and burner hearth intersection, multiple wind caps along material returning device inner furnace wall it is circumferentially distributed,
And be embedded in material returning device inner furnace wall, wind cap blows into material returning device, and air port air-flow is obliquely.
After using above structure, it is used for separator and material returning device in biomass recirculating fluidized bed boiler of the present utility model
Anti-block apparatus compared with prior art, with advantages below：
1st, separator and the smooth conveying recycle stock of material returning device are realized, it is ensured that whole material circulating system for a long time can may be used
By continuous operation, with the high technical advantage of equipment good economy performance reliability.
2nd, can be according to the characteristic of different biomass fuels, and which circulates the characteristic of flying dust, adjusts per layer of purging air-flow
Flow velocity, it is ensured that separator material return system adapts to the burning operation of every kind of bio-fuel.
3rd, this efficiently purges anti-block apparatus and is also applied for other easily coking fuel, such as sludge, rubber, plastics, life rubbish
Rubbish etc..
Description of the drawings
Fig. 1 is this utility model cyclone separator arrangement schematic diagram；
Fig. 2 is this utility model material returning device structural representation.
Wherein：1st, separator, 2, material returning device, 3, air distribution main pipe, 4, wind cap, 5, air distribution pipe, 6, float-type
Meter, 7, damper, 8, separator inner furnace wall, 9, material returning device inner furnace wall, 10, returning charge airduct.
Specific embodiment
Accompanying drawing is combined below by embodiment, and the utility model will be further described.
As shown in Figure 1-2, it is used for separator and material returning device in the biomass recirculating fluidized bed boiler that the present embodiment is provided
Anti-block apparatus, it includes separator 1 and material returning device 2, and the anti-block apparatus are respectively arranged on the bottom of separator 1 and material returning device 2；Institute
Stating anti-block apparatus includes air distribution main pipe 3 and several wind caps 4, and 3 upper end of air distribution main pipe is communicated with least one air distribution
Sub- pipe 5, the sub- pipe of the wind cap 4 and air distribution 5 are connected, and 3 lower end of air distribution main pipe is provided with suspended body flowmeter 6 and adjusts wind
Door 7.
As shown in figure 1, the air distribution main pipe 3 is provided with the sub- pipe 5 of about two air distributions being parallel to each other, each air distribution pipe
5 are provided with multiple wind caps 4, be provided with heat resistant and wear resistant and damage erosion-resisting separator inner furnace wall in the cone section region of separator 1
8, multiple wind caps 4 along separator inner furnace wall 8 it is circumferentially distributed, and be embedded in separator inner furnace wall 8, wind cap 4 to point
In device 1 air-supply, and air port air-flow is obliquely.
Air distribution main pipe 3 is introduced by the high-pressure blast of returning charge airduct 10, the edge in every separator bottom separator inner furnace wall 8
Circumferencial direction and two-layer wind cap purging wind be set, wind cap air port air-flow towards direction obliquely, with recycle stream
To consistent, thus two-layer high-voltage high-speed purging air-flow is defined in separator bottom cone section region, on separator barrel surface
Form lower resistance air cushion, intercept contact of the material with barrel as far as possible and bond, at the same high velocity air also portability recycle stock is smooth
Into the feed back leg device of separator bottom, fundamentally prevent material from putting up a bridge in the cone section region of separator bottom and pile up, hinder
Disconnected material circulating system, it is ensured that Matter Transfer is smoothed out.
Wherein, as needed, multi-layer oriented blast cap purging wind can be circumferentially set in separator inner furnace wall 8.
As shown in Fig. 2 the air distribution main pipe 3 is provided with the sub- pipe 5 of about three air distributions being parallel to each other, each air distribution pipe
5 are provided with multiple wind caps 4, be provided with heat resistant and wear resistant and damage erosion-resisting material returning device inner furnace wall in the bottom section of material returning device 2
9, wind cap 4 is located at the bottom of material returning device 2 and the material returning device of burner hearth intersection, and multiple wind caps 4 are along material returning device inner furnace wall 9
It is circumferentially distributed, and be embedded in material returning device inner furnace wall 9, wind cap 4 blows into material returning device 2, and air port air-flow is obliquely.
Air distribution main pipe 3 is introduced by the high-pressure blast of returning charge airduct 10, in each material returning device 2 and the material returning device of burner hearth intersection
Three layers of wind cap 4 are set in inner furnace wall 9 and purge wind, wind cap air port air-flow towards direction obliquely, with recycle stream
To consistent, along material returning device passage towards burner hearth, thus three layers of high-voltage high-speed are defined in material returning device outlet section bottom section
Purging air-flow, high velocity air carry recycle stock and smoothly enter boiler furnace, fundamentally prevent material in material returning device and burner hearth
Juncture area put up a bridge pile up, blocking material circulating system, it is ensured that Matter Transfer is smoothed out.
Wherein, as needed, multi-layer oriented blast cap purging wind can be circumferentially set in material returning device inner furnace wall 9.
Claims (4)
1. the anti-block apparatus of separator and material returning device are used in a kind of biomass recirculating fluidized bed boiler, it is characterised in that：It wraps
Separator and material returning device is included, the anti-block apparatus are respectively arranged on the bottom of separator and material returning device；The anti-block apparatus include matching somebody with somebody
Wind main pipe and several wind caps, the air distribution main pipe upper end are communicated with least one air distribution pipe, the wind cap with
The sub- pipe of air distribution is connected.
2. the anti-block apparatus of separator and material returning device are used in biomass recirculating fluidized bed boiler according to claim 1,
It is characterized in that：The air distribution main pipe lower end is provided with suspended body flowmeter and damper.
3. the anti-block apparatus of separator and material returning device are used in biomass recirculating fluidized bed boiler according to claim 2,
It is characterized in that：The air distribution main pipe is provided with about the two air distribution pipes being parallel to each other, and the sub- pipe of each air distribution is provided with many
Individual wind cap, is provided with heat resistant and wear resistant and damages erosion-resisting separator inner furnace wall, multiple orientation wind in the cone section region of separator
Shade separator inner furnace wall is circumferentially distributed, and be embedded in separator inner furnace wall, and wind cap blows into separator, and air port
Air-flow is obliquely.
4. the anti-block apparatus of separator and material returning device are used in biomass recirculating fluidized bed boiler according to claim 2,
It is characterized in that：The air distribution main pipe is provided with about the three air distribution pipes being parallel to each other, and the sub- pipe of each air distribution is provided with many
Individual wind cap, is provided with heat resistant and wear resistant and damages erosion-resisting material returning device inner furnace wall, wind cap position in the bottom section of material returning device
In the bottom of material returning device and the material returning device of burner hearth intersection, multiple wind caps are circumferentially distributed, and pre-buried along material returning device inner furnace wall
In material returning device inner furnace wall, wind cap blows into material returning device, and air port air-flow is obliquely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074614.5U CN206037025U (en) | 2016-09-23 | 2016-09-23 | Stifled device of preventing that is used for separator and material returning device in biomass circulating fluid bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074614.5U CN206037025U (en) | 2016-09-23 | 2016-09-23 | Stifled device of preventing that is used for separator and material returning device in biomass circulating fluid bed boiler |
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| Publication Number | Publication Date |
|---|---|
| CN206037025U true CN206037025U (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621074614.5U Active CN206037025U (en) | 2016-09-23 | 2016-09-23 | Stifled device of preventing that is used for separator and material returning device in biomass circulating fluid bed boiler |
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| CN (1) | CN206037025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196035A (en) * | 2016-09-23 | 2016-12-07 | 杭州锅炉集团股份有限公司 | For separator and the anti-block apparatus of material returning device in biomass recirculating fluidized bed boiler |
-
2016
- 2016-09-23 CN CN201621074614.5U patent/CN206037025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196035A (en) * | 2016-09-23 | 2016-12-07 | 杭州锅炉集团股份有限公司 | For separator and the anti-block apparatus of material returning device in biomass recirculating fluidized bed boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 1216, danionggang Road, Jianggan District, Hangzhou City, Zhejiang Province, 310021 Patentee after: Xizi clean energy equipment manufacturing Co.,Ltd. Address before: 1216, danionggang Road, Jianggan District, Hangzhou City, Zhejiang Province, 310021 Patentee before: HANGZHOU BOILER GROUP Co.,Ltd. |