CN1042412A - Normal pressure boiling furnace high-temperature ash cooler - Google Patents
Normal pressure boiling furnace high-temperature ash cooler Download PDFInfo
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- CN1042412A CN1042412A CN 88109985 CN88109985A CN1042412A CN 1042412 A CN1042412 A CN 1042412A CN 88109985 CN88109985 CN 88109985 CN 88109985 A CN88109985 A CN 88109985A CN 1042412 A CN1042412 A CN 1042412A
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- ash
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
Normal pressure boiling furnace high-temperature ash cooler belongs to the fluidized bed furnace technical field.It adopts multistage cold air in parallel and slowly mobile warm sludge to carry out the high-temperature ash that discharge bottom boiling boiler is cooled off in the direct contact type heat exchange, adopt the sealing dipleg to be fit to the trouble free service under the positive pressure, the continuous discharging slag amount of controlling and regulating boiling boiler by trough of belt slag discharge plate and buncher.This device good cooling results, power consumption is few, and is simple to operate, and operation is convenient, can not only manually control the continuous discharging slag amount of boiler, and realizes control automatically easily.This device also can be applied in the cooling and recuperation of heat of other high-temperature particle body.
Description
The present invention is a kind of novel normal pressure boiling furnace high-temperature ash cooling device, belongs to the boiling boiler technical field.
The discharging of existing atmospheric boiling boiler high temperature lime-ash, mostly be the interruption slagging, the high-temperature ash multi-purpose trolley of emitting is shifted ash field or outdoor onto, carries out the nature cooling or waters water cooling, and labor strength is big, working condition is abominable, the lime-ash physics sensible heat of the very serious ， And of environmental pollution and 850 °～900 ℃ has lost in vain, and this uses low heat value for China, the boiling boiler of high grey inferior fuel, problem is particularly outstanding.Some factory once adopted dividing wall type water-cooled ash-dregs cooler to come the cooling down high-temperature lime-ash for this reason, but eventually big because of water consumption, hot water can't utilize, and cooling effect is good and can not satisfy the requirement of high-temperature ash cooling yet.
" fluidized bed furnace deslagging controller and the report of deslagging cooling device development test " (Ministry of Water Resources and Power Industry's Xian Thermal Power Engineering Research Institute, Xuzhou power administration merchant Wang power plant in September, 1985) a kind of moving-bed type deslagging heat exchanger and fluidized bed type deslagging controller experimental rig have been disclosed in, cool off the high-temperature ash of fluidized bed furnace continuously, this device adopts fluidized bed type deslagging controller, operation is controlled comparatively complicated ， And and is needed to adopt 450mmH
2The pressure-air incoming flow chemical control system deslagging of O.The bulky grain lime-ash be difficult for to be discharged, and these deslagging heat exchanger wearing and tearing are severe, amplify difficulty, and are highly too high, is furnished with difficulty for the boiling boiler of bottom continuous discharging slag, and air quantity in service leaks very big.
The object of the present invention is to provide a kind of good cooling results, power consumption is few, and compact conformation is easy to operate, the high-temperature ash cooling device that is easy to realize continuous discharging slag safe and reliable to operation.
Solution of the present invention is (seeing accompanying drawing): the scum pipe of boiling boiler bottom directly is connected with ash-dregs cooler, and slag has been full of whole scum pipe and ash-dregs cooler body, forms long sealing dipleg.The high temperature furnace slag of boiling boiler (10) enters the slag feed pipe (9) on high-temperature ash cooler top continuously by boiler bottom scum pipe (3), enters ash-dregs cooler.Slag feed pipe (9) directly is connected with boiler slag removal pipe (3), and warm sludge is full of in the pipe, has formed long sealing dipleg, and under the sealing function of this dipleg, the malleation hot blast in the boiling boiler can not leak, and ash-dregs cooler can be worked safely and reliably.High-temperature ash falls slowly by deadweight under the control of trough of belt slag discharge plate (2), enters cooling chamber (1), has installed multilayer wind box (7), (8) in the cooling chamber (1).The multilayer air intake box (7) that cold air is arranged by pressure fan send Ru And connection, cold air that air intake box (7) comes out and the warm sludge that falls slowly carry out the direct contact type heat exchange, through repeatedly fully the heat exchange high-temperature ash be cooled.Cooled lime-ash enters storage slag bucket (6) continuously through trough of belt slag discharge plate (2).The multilayer air draft box (8) that has absorbed the air You And connection layout of high-temperature ash physics sensible heat is discharged.The hot-air of these discharges is compiled, through deduster, air-introduced machine, send into boiler furnace and make secondary wind or mix the main air blower import to be used.
Trough of belt slag discharge plate (2) is driven by buncher (5) and transmission device (4).The rotating speed of regulating buncher reaches the purpose of regulating the continuous discharging slag amount to change the reciprocating frequency of slag discharge plate (2).Realize regulating automatically or manual adjustments by boiling boiler bed pressure difference signal,, make boiling boiler stable operation to keep desired bed height.
High-temperature ash cooler wind box (7), (8), an end of its length direction is weldingly fixed on the sidewall of cooling chamber (1).The other end freely is shelved on another sidewall, can free wxpansion after it is heated.Work for adapting under the hot conditions.Top (high-temperature region) element of cooling chamber (1) comprises that sidewall and wind box make by the heat-resistance stainless steel material.
The present invention compared with prior art has following advantage: the present invention directly contacts the cooling down high-temperature slag with slag with the cooling air.Volumetric heat transfer coefficient is big, the slag good cooling results, and compact ， And of apparatus structure and cooler body directly are connected by scum pipe with boiling boiler.Slag has been full of whole scum pipe and cooler body, has formed long sealing dipleg, and the malleation hot blast under the effect of this sealing dipleg in the boiler furnace can not leak, and has guaranteed that ash-dregs cooler is safe and reliable to operation.Because the lime-ash translational speed is slow.The time of staying is long in cooling chamber.Warm sludge and cooling air can obtain sufficient heat exchange; The warm sludge translational speed is slow simultaneously.Equipment attrition is little, long service life; The Leng that sends in the ash-dregs cooler but Kong Qi And joins multistage distribution.Bed of material resistance is little, power consumption is few; Unobstructed the flowing that advance, the structure of air draft box is suitable for slag.Its mounting process has guaranteed the thermal expansion under the hot operation; Drive the move adjusting of continuous discharging slag and the bed drain purge of finishing boiling boiler of trough of belt slag discharge plate continuously by buncher.Realize the stable operation of boiling boiler.It is simple to operate, operation is convenient, realizes comprehensively control automatically for boiler and has created condition.After the fluidized bed furnace lime-ash directly cools off, solved the transportation problem of lime-ash, not only improved lime-ash quality and utilization rate but also protected surrounding environment.Improved workman's working condition; The air that has absorbed high-temperature ash physics sensible heat can be got back to boiler furnace and be used, and improves the thermal efficiency of boiler, and also can be used as drying etc. needs the hot-air place to utilize.Device of the present invention can be applied in the cooling and recuperation of heat of other high-temperature particle body.
Accompanying drawing is this normal pressure boiling furnace high-temperature ash cooler schematic diagram.
Use 35 tons of 2000 kilocalories/kilogram calorific value/time boiling boiler, adopted this device 850 °～900 ℃ high-temperature ash can be cooled to below 200 ℃, the hot-air that has reclaimed lime-ash physics sensible heat melts down the thorax utilization. Can improve boiler thermal output about 2%. Can economize on coal every year 600 tons and mark coal, dried slag gains about 60000 yuan, and total economic benefit reaches more than 150,000 yuan every year.
Claims (2)
1, a kind of normal pressure boiling furnace high-temperature ash cooler, it is controlled three parts by slag input, cooling, deslagging and forms.The bottom scum pipe (3) that it is characterized in that ash-dregs cooler body and boiling boiler (10) directly is connected, and whole scum pipe and ash-dregs cooler have been full of lime-ash; Cooling chamber (1) has installed multilayer wind box (7), (8); The deslagging controlling organization is made up of trough of belt slag discharge plate (2) buncher (5) and transmission mechanism (4).
2, according to the described normal pressure boiling furnace high-temperature ash of claim 1 cooler, it is characterized in that wind box (7), (a 8) end along its length is weldingly fixed on the sidewall of cooling chamber (1), the other end freely is shelved on another sidewall; Top (high temperature section) element of cooling chamber (1) adopts the heat-resistance stainless steel material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109985 CN1042412A (en) | 1988-10-31 | 1988-10-31 | Normal pressure boiling furnace high-temperature ash cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109985 CN1042412A (en) | 1988-10-31 | 1988-10-31 | Normal pressure boiling furnace high-temperature ash cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1042412A true CN1042412A (en) | 1990-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88109985 Pending CN1042412A (en) | 1988-10-31 | 1988-10-31 | Normal pressure boiling furnace high-temperature ash cooler |
Country Status (1)
| Country | Link |
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| CN (1) | CN1042412A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270382A (en) * | 2010-10-28 | 2013-08-28 | 阿尔斯通技术有限公司 | Orifice plate for controlling solids flow, methods of use thereof and articles comprising the same |
| US9617087B2 (en) | 2010-10-28 | 2017-04-11 | General Electric Technology Gmbh | Control valve and control valve system for controlling solids flow, methods of manufacture thereof and articles comprising the same |
-
1988
- 1988-10-31 CN CN 88109985 patent/CN1042412A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270382A (en) * | 2010-10-28 | 2013-08-28 | 阿尔斯通技术有限公司 | Orifice plate for controlling solids flow, methods of use thereof and articles comprising the same |
| CN103270382B (en) * | 2010-10-28 | 2016-08-10 | 阿尔斯通技术有限公司 | Control the orifice plates of solid particle stream and using method and include the article of orifice plates |
| US9557115B2 (en) | 2010-10-28 | 2017-01-31 | General Electric Technology Gmbh | Orifice plate for controlling solids flow, methods of use thereof and articles comprising the same |
| US9617087B2 (en) | 2010-10-28 | 2017-04-11 | General Electric Technology Gmbh | Control valve and control valve system for controlling solids flow, methods of manufacture thereof and articles comprising the same |
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