CN2419490Y - Internally circulating fluid bed incinerating boiler for garbage - Google Patents
Internally circulating fluid bed incinerating boiler for garbage Download PDFInfo
- Publication number
- CN2419490Y CN2419490Y CN 00232840 CN00232840U CN2419490Y CN 2419490 Y CN2419490 Y CN 2419490Y CN 00232840 CN00232840 CN 00232840 CN 00232840 U CN00232840 U CN 00232840U CN 2419490 Y CN2419490 Y CN 2419490Y
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- CN
- China
- Prior art keywords
- air
- bed
- boiler
- burner hearth
- garbage
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- 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 - Lifetime
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Abstract
The utility model discloses an internally circulating fluid bed incinerating boiler for domestic garbage in a city, which is provided with a boiler body, a separator in the boiler, a superheater, a coal economizer, an air preheater and an automatic ignition device under a bed, wherein, an air chamber, an air-distributing device and a hearth are orderly arranged on the boiler body; a steam bag is arranged above the hearth; air is supplied by a blower fan; the back part of the air-distributing device is provided with a slag discharge port, a cool slag separation device, a cooling device and a cooling fan, wherein, the upper part of the cool slag separation device is connected with a bed stuff return pipe. An adopted internally circulating different weight fluid bed can incinerate garbage with high water content, low heat value and high ash content; the mixing in the bed is uniform. The utility model is particularly suitable for the characteristics that the heat value of the garbage greatly changes along with the seasons.
Description
The utility model relates to combustion apparatus, relates in particular to a kind of city house refuse internal circulating different weight fluidized-bed incineration boiler.
The environmental pollution that municipal refuse discharging is produced and properly to administer be one of the urgency that faces of China problem to be solved.The National urban house refuse amount of clearing in 1996 has reached about 100,000,000 tons according to statistics, expects China's domestic waste annual production in 2000 and will reach 1.5 hundred million tons.
A large amount of generations of domestic waste and fail appropriate processing and utilizing have in addition had a strong impact on the development of people's quality of life, working environment and urban construction, mainly show following several respects: 1) take a large amount of soils; 2) cause water pollution; 3) influence the healthy of urban look and resident.Because arbitrarily abandoning or stacking of rubbish is affected many tourist sights; 4) cause casualty accident; 5) increased the expense of moving, China remains mixed collection at the rubbish in part city, causes the intractability of rubbish big, and the construction investment of destructor plant and operating cost are increased.
At present commonplace viewpoint thinks that the burning method disposal of refuse is to realize the most quick and effective technical of minimizing.Compare with other processing method, burning method has following outstanding advantage: 1) reduce the rubbish volume and weight widely, the lime-ash after burning simultaneously also can fully utilize (burning the back volume can reduce more than 90%); 2) processing speed of rubbish is fast, does not need long term storage; 3) rubbish on-site incineration does not need long-distance transportation; 4) can recover energy be used for the generating and heat supply; 5) by organizing low correct design of polluting burning operating mode and incinerator can realize very low secondary pollution.
The incinerator combustion method that has put into operation in present various countries has: 1, multi-stage stepwise traveling-grate stoker, inclination reciprocating fire grate and the anti-grate furnaces such as Martin's fire grate that send formula; The advantage of grate furnace is not need rubbish is carried out preliminary treatment.Its weak point is as follows: 1) fire grate processing request height; 2) be difficult to realize remove in the stove SO
2, HCL gas, need install the equipment that removes of special HCL and other dusty gas at afterbody additional, increased investment cost; 3) steam parameter of this kind incinerator is lower, is difficult to realize be complementary with steamer generating equipment efficiently.
The refuse thermal value that developed country burns is mostly more than 8374KJ/kg (2000kcal/kg).The domestic urban domestic garbage incinerator of developing voluntarily at present belongs to simple and easy incinerator more, still can not realize efficient the burning and low pollution emission.Introduce grate incinerator and then cost an arm and a leg, economy is relatively poor, is difficult to apply.
The purpose of this utility model provides a kind of easy to operate, stable, city house refuse internal circulating different weight fluidized-bed incineration boiler that burn-out degree is high.
The utility model is taked following measures in order to achieve the above object:
City house refuse internal circulating different weight fluidized-bed incineration boiler has boiler body, be provided with air compartment on the boiler body successively, air-distribution device, burner hearth, sidewall is provided with coal feeding hole in the burner hearth lower end, the garbage feeding mouth, be provided with the secondary air mouth around the burner hearth, overfiren air port connects overfire air fan, furnace outlet is provided with the stove inner separator, the horizontal flue place is provided with superheater, the boiler tail top is provided with economizer, the below is provided with air preheater, cooled smoke is drawn through ash bucket, burner hearth top is provided with drum, air compartment successively with bed under automatic ignition device, oil pump, fuel tank joins, and air is provided by air blast, the air-distribution device rear portion is provided with slag-drip opening and cold slag sorting and cooling device, cooling blower, cold slag sorting unit top connect bed material loopback pipe.
The utility model is easy to operate, stable.The fluid bed amount of stored heat is big, thereby has avoided the rapid heat cycle phenomenon of bed, makes flameholding.The drying of rubbish, catch fire, burn and burn almost and carry out simultaneously, need not complicated adjustment, burning control and easily is automated easily.Good endurance, long service life.There is not mechanical moving element in the stove, so long service life.Take the measure of comprehensive anti-secondary pollution, the harmful substance that produces during to burning is handled.Fluidized bed incinerator is owing to stove internal combustion intensity and heat-transfer intensity height, and the fluid bed furnace volume ratio grate furnace of identical garbage treatment quantity is little, so reduced investment is suitable for to large scale development.The internal circulating different weight fluidized-bed fuel tolerance that the utility model adopts is wide, the high moisture content of incendivity, and low heat value, the rubbish of ash-rich mixes in the bed, and the burn-out degree height is particularly suitable for refuse thermal value with the very big characteristics of seasonal variety.
Below in conjunction with accompanying drawing the utility model is elaborated.
Accompanying drawing is a structural representation of the present utility model.
Garbage feeding mouth 18 is connected to burner hearth 7, and coal feeding hole 19 is connected to burner hearth 7.Below burner hearth 7 air-distribution device 6, the chamber 5 of giving a dinner for a visitor from afar down, air compartment 5 fronts and bed automatic ignition device 2 down join, and its air is provided by air blast 1.Around the burner hearth 7 overfiren air port 20 is arranged, overfiren air port connects overfire air fan 17.Stove inner separator 9 is arranged in burner hearth 7 outlets, and there is drum 8 the burner hearth top.The furnace outlet horizontal flue is furnished with superheater (branch secondary).There is economizer 11 the boiler tail top, and there is air preheater 12 below.Flue gas through cooling is drawn behind ash bucket 13, enters flue gas purification system.The flue gas that purifies is handled up to standard after the smoke stack emission atmosphere.Bed connects oil pump 4 before and after the automatic ignition device down, and oil is extracted out from fuel tank 3.Air-distribution device 6 rear portions are connected to cold slag sorting unit 15 by inclined tube.Connect cooling blower before it again, connect bed material loopback pipe 16 through cold slag sorting unit top.The air of burning boiler is by air blast 1, through a bed automatic ignition device 2 down, enters air-distribution device 6 behind the air compartment 5, resupplies the different proportion fluidizing agent in the stove, with the temperature maintenance of rubbish and fluidizing agent between 800～1000 ℃.The heat of keeping stove wind-warm syndrome degree is by providing for rubbish mouth 18 and coal feeding hole 19, and the high-temperature ash that produces after the waste incineration drains into the ash cooling device 15 of back wall, and qualified bed material is sent back in the stove through bed material loopback pipe 16 by cooling blower 14.Flying dust in the flue gas that the burning back produces is sent back in the stove along the back wall by the 9 separation backs of separator in the stove and is burned, to improve the rubbish burnout rate.
Air-distribution device 6 is an incline structure in the stove, and the gradient of head end and afterbody is 1～15 degree.Be furnished with the blast cap or the directional type blast cap of standard on the air-distribution device.The middle part of burner hearth 7 has overfire air fan, secondary wind can strengthen the burning of volatile matter in the upper furnace rubbish before being furnished with overfiren air port 18, overfiren air port, reduces the generation of carbon monoxide.Drum 8 is arranged in the top of burner hearth.The flue gas of furnace outlet enters the flue gas cooling procedure behind stove inner separator 9, two-stage superheater 9 coolings by horizontal flue, through entering boiler back end ductwork behind the turning smoke-box, economizer is arranged in the back-end ductwork top, arranged beneath air preheater 12, its arranged beneath ash bucket 13, the flue gas behind ash flue bucket enters flue gas purification system.Flue gas after being purified enters atmosphere through chimney.
The sewage that the rubbish storehouse produces sprays into the burner hearth top by sewage pump 21 through sewage jet pipe 22, mixes with the flue gas of waste incineration after 800～1000 ℃ high-temperature flue gas burn.
Claims (2)
1. city house refuse internal circulating different weight fluidized-bed incineration boiler, it is characterized in that it has boiler body, be provided with air compartment [5] on the boiler body successively, air-distribution device [6], burner hearth [7], be provided with coal feeding hole [19] at burner hearth lower end sidewall, garbage feeding mouth [18], be provided with secondary air mouth [20] around the burner hearth, overfiren air port connects overfire air fan [17], furnace outlet is provided with stove inner separator [9], the horizontal flue place is provided with superheater [10], the boiler tail top is provided with economizer [11], the below is provided with air preheater [12], cooled smoke is drawn through ash bucket [13], the burner hearth top is provided with drum [8], air compartment [5] successively with bed under automatic ignition device [2], oil pump [4], fuel tank [3] joins, air is provided by air blast [1], and air-distribution device [6] rear portion is provided with slag-drip opening and cold slag sorting and cooling device [15], cooling blower [14], cold slag sorting unit top connects bed material loopback pipe [16].
2. a kind of city house refuse internal circulating different weight fluidized-bed incineration boiler according to claim 1 is characterized in that said air-distribution device is an incline structure, and gradient is 1～15 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232840 CN2419490Y (en) | 2000-04-29 | 2000-04-29 | Internally circulating fluid bed incinerating boiler for garbage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232840 CN2419490Y (en) | 2000-04-29 | 2000-04-29 | Internally circulating fluid bed incinerating boiler for garbage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2419490Y true CN2419490Y (en) | 2001-02-14 |
Family
ID=33595341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00232840 Expired - Lifetime CN2419490Y (en) | 2000-04-29 | 2000-04-29 | Internally circulating fluid bed incinerating boiler for garbage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2419490Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614400B (en) * | 2009-07-31 | 2011-03-02 | 北京热华能源科技有限公司 | Fluidized selective deslagging device |
| CN105927970A (en) * | 2016-05-30 | 2016-09-07 | 广东工业大学 | Circulating fluidized bed combustion system with uniform wind distribution device |
-
2000
- 2000-04-29 CN CN 00232840 patent/CN2419490Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614400B (en) * | 2009-07-31 | 2011-03-02 | 北京热华能源科技有限公司 | Fluidized selective deslagging device |
| CN105927970A (en) * | 2016-05-30 | 2016-09-07 | 广东工业大学 | Circulating fluidized bed combustion system with uniform wind distribution device |
| WO2017206430A1 (en) * | 2016-05-30 | 2017-12-07 | 广东工业大学 | Circulating fluidized bed combustion system with uniform air distribution device |
| US10174936B2 (en) | 2016-05-30 | 2019-01-08 | Guangdong University Of Technology | Circular fluidizing bed combustion system with uniform airflow distributing device |
| CN105927970B (en) * | 2016-05-30 | 2019-11-26 | 广东工业大学 | Recirculating fluidized bed combustion system with Even air distribution device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010214 |