CN200955757Y - Furnace slag residual heat recovery device - Google Patents
Furnace slag residual heat recovery device Download PDFInfo
- Publication number
- CN200955757Y CN200955757Y CNU2006200989433U CN200620098943U CN200955757Y CN 200955757 Y CN200955757 Y CN 200955757Y CN U2006200989433 U CNU2006200989433 U CN U2006200989433U CN 200620098943 U CN200620098943 U CN 200620098943U CN 200955757 Y CN200955757 Y CN 200955757Y
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- CN
- China
- Prior art keywords
- slag
- tremie pipe
- boiler
- heat recovery
- waste heat
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a waste heat recovery device in a slag hearth of a boiler. The device is characterized in that a waste heat recovery box is arranged on a slag conveyer chain which is used as the bottom of the waste heat recovery box, an upper opening of a slag feeding pipe is welded on the slag feeding pipe of the former boiling boiler, a slag distributor under the lower feeding pipe expands into the recovery box, and the slag is laid on the conveyer chain evenly by the slag distributor, the waste gas heat volatilized from the slag is absorbed into the waste heat recovery box, the negative pressure is generated in the slag waste heat recovery box and the exhaust tube by the action of an air blower (4), the hot air is absorbed into the fan through the exhaust tube and then is sent to a wind box for coal burning. The cooled slag is discharged by the conveyer chain. The utility model solves the problem of the fluctuation of the boiler temperature created by slag discharge of the boiling boiler and the fluctuation effecting the steam pressure and liquid level of the boiler so as to increase the temperature of the air for combustion-supporting and expand the temperature control range of the boiler, the temperature increases quickly, the thermal efficiency of the boiler is increased, and the coal is economized. The utility model has the advantages of that the pollution of the volatile gas from the slag and the slag dust on the environment is reduced, and the operation and control is convenient, thereby the labor intensity of the workers is reduced.
Description
Technical field
The utility model relates to a kind of furnace slag residual heat recovering device, relates in particular to the waste-heat recovery device of a kind of fluidized bed combustion boiler or fluidized-bed combustion boiler high temperature furnace slag.
Background technology
Before the utility model, the afterheat of slags that people get rid of the slag, particularly boiling boiler of fluidized bed combustion boiler or fluidized-bed combustion boiler eliminating is recycled and is constantly studied, and as the method that adopts air cooling boiler pneumatic dispatch is arranged, double bed is repeatedly put method, fluidized bed process etc.Its common feature is all sent into from the fluidized bed furnace bottom as combustion air for the hot blast after heating, the waste heat of discharging slag is recycled, above-mentioned several method, brought into play certain positive role in waste heat recovery, aspect energy-conservation, but owing to the hot blast cleanliness factor is required high, resistance is big, need set up blower fan and gas-solid separating device, causes operation power consumption height.Patent publication No. is that CN1197179A, denomination of invention are " directly blowing bubbling furance slag after heat recovering method and sharp system ", be to use the air cooled slag, to be sent into the method for the combustion-supporting recovery afterheat of slags of fluidized bed furnace by the hot blast after the slag heating, make that to flow into slag from the slag of the ebullated bed of fluidized bed furnace discharging cooling bed, the cold air cooling bed with blasting slag carries out heat exchange, its characteristics are control after the slag heating or air are introduced stove from the suspension section of fluidized bed furnace, as the required combustion air of fluidized bed furnace second-time burning.Though this invention is adopted the afterheat of slags air is introduced stove at the suspension section negative pressuren zone of fluidized bed furnace, hot blast can improve hot blast temperature without equipment such as air blasts as far as possible, and the thermal efficiency of boiler is increased.But still there is the device structure complexity in this invention, blasts the cooling bed cold air of slag and carries out making in the process of heat exchange and enter the cooling bed afterheat of slags of slag and reduce greatly, and heat loss is big.
Summary of the invention
The purpose of this utility model is to improve a kind ofly effectively to solve the in-problem direct recovery boiling boiler afterheat of slags device of above-mentioned prior art, 90% slag is evenly put into continuously on the chain row moving bed through this device, the afterheat of slags gas of volatilization sucks air blast through the blower inlet negative pressure with hot-air again and sends into air compartment as the required combustion air of boiling boiler second-time burning through collection box, exhaust column.Cold slag is discharged through carrier chain row.When going into stove coal combustion value when being 2,000 8 the hundred major cards, economize on coal about 15%.
Technical solution of the present utility model is: a kind of furnace slag residual heat recovering device, by charging aperture, blast cap, ebullated bed, the outstanding section of boiling, the boiling boiler air compartment, boiler body, back-end surfaces, tremie pipe, balancing weight, the carrier chain arranging device, the waste heat recovery case, exhaust tube, air blast, control valve, the slag distributor is formed, it is characterized in that: slag tremie pipe (2) lower end is provided with activity distribution device (7), the upper port of slag tremie pipe (2) is welded on the slag tremie pipe (1), and connect with slag tremie pipe (1), the lower end activity distribution device (7) of slag tremie pipe (2) is contained in the collection box (8), the other end of collection box is provided with removable cover door (18), one termination of exhaust column (17) is welded on the hole of boxboard on collection box (8) one ends, volume damper door (5) is equipped with at exhaust tube other end tube head place, and be connected with the blast pipe of air blast (4), afterbody at the air blast blast pipe is equipped with volume damper door (3), the air blast blast pipe is connected with the air compartment of boiling boiler, is provided with slag carrier chain arranging device below the waste heat recovery case.
A kind of furnace slag residual heat recovering device described in the utility model, it is toroidal or trapezoidal that the lower end of slag tremie pipe (2) is provided with slag distributor (7), be provided with portable plate (21) at a toroidal or a trapezoidal side, the top of portable plate is connected with hinge (19) with tremie pipe, and portable plate is provided with counterweight iron block (22).
A kind of furnace slag residual heat recovering device described in the utility model, slag tremie pipe (2) are welded on the former boiling boiler slag tremie pipe (1), are made as 3 ° of-60 ° of angles between slag tremie pipe (2) and the slag tremie pipe (1); The lower nozzle of slag tremie pipe (1) is provided with movable gate, or former boiling boiler slag tremie pipe (1) is disassembled, directly slag tremie pipe (2) is installed in air distribution plate below.
A kind of furnace slag residual heat recovering device described in the utility model, slag carrier chain row (12) goes up chain and is enclosed within on the sprocket wheel (9,13), sprocket wheel (9,13) is installed in the cylinder two ends respectively, sprocket shaft (10,14) is installed in respectively in the centre bore of sprocket wheel (9,13) and cylinder, the two ends of sprocket shaft (10,14) are installed in respectively on the support (11,15), decelerator (16) is installed on a termination of drive sprocket axle, and driving-belt is sleeved on the belt pulley of decelerator and motor.
The utility model furnace slag residual heat recovering device is that boiling boiler furnace slag residual heat recovering device and boiling boiler are combined.Boiling boiler hangs the section of boiling, fluidized bed furnace air compartment, boiler body, back-end surfaces, ebullated bed, compositions such as tremie pipe and pressure fan normally by blast cap, ebullated bed.The main feature of this device is to establish the afterheat of slags collection box on slag carrier chain row, carrier chain row is as at the bottom of the waste heat recovery case case, slag tremie pipe upper port is welded on the former fluidized bed furnace slag tremie pipe (1), the lower end is stretched in the waste heat recovery case (8), slag evenly is emitted on the carrier chain row (12) through the slag distributor, the waste heat gas of slag volatilization is collected in the waste heat recovery case, under the effect of air blast (4), make the afterheat of slags collection box and bleed or exhaust column (17) in the generation negative pressure, hot-air is sucked through exhaust column. send into coal supply burning in the boiler air compartment in the air blast (4) again.Slag after the cooling is transferred chain row and discharges.
The utility model only need be removed former chain row conveying device, install the slag conveying device the transformation of old boiling boiler, waste heat gas collection box, air draft pipe and welding band slag distributor tremie pipe described in the utility model on former slag tremie pipe, only need install slag carrier chain row to the boiling boiler that new production is installed, waste heat gas collection box, exhaust column, control valve need not changed other structure of boiler and just can realize described requirement.This furnace slag residual heat recovering device, simple in structure, small investment, profitable saves medicine fuel, has improved the thermal efficiency of boiler.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples
Fig. 1 is the utility model structural representation,
Fig. 2 is the utility model slag structure of distributor schematic diagram,
1. slag tremie pipes, 2. slag tremie pipe, 3. control valve in the drawings, 4. air blast, 5. control valve, 6 peep holes, 7. support, 16. decelerators, 17. exhaust tubes, 18. the removable cover door, 19. hinges, 20. portable plates, 21. counterweight iron block, 22. ebullated bed, the 23 outstanding sections of boiling, 24. air compartments, 25. boiler bodies, 26. back-end surfaces, 27. air exhausters.
Look as Fig. 1, boiling boiler partly comprises charging aperture, blast cap, ebullated bed, the outstanding section of boiling, fluidized bed furnace air compartment, boiler body, back-end surfaces, pressure fan, air exhauster and control valve composition; Ebullated bed is provided with fuel gas inlet, blast cap, overflow slag tremie pipe; Waste-heat recovery device mainly is the slag tremie pipe (2) by band slag distributor, waste heat recovery case (8), exhaust column (17), carrier chain row (12), removable cover door (18), sprocket wheel (9,13), fast device (16) slows down, control valve (3), control valve (5), air blast (4), hinges (19), removable cover (20), balance weight iron (21), buncher is formed.
In the embodiment shown in fig. 1, the upper orifice of slag tremie pipe (2) is welded on the former slag tremie pipe (1), be provided with 5-70 ℃ of angle between slag tremie pipe (2) and the slag tremie pipe (1), the lower nozzle of slag tremie pipe (1) is provided with movable gate, and movable gate is used to remove the tremie pipe blockage problem, when blanking pipe plug plug, open the sluices, removing is blocked in the slag in the tremie pipe, after defeated leading to, closes movable gate.The upper orifice of slag tremie pipe (2) and slag tremie pipe (1) connect, on slag tremie pipe (2), be provided with peep hole (6), be provided with the slag distributor (7) of bell mouth shape or trapezoidal shape at the lower nozzle place of slag tremie pipe (2), one side of slag distributor (7) is established a portable plate (21), the upper edge of portable plate links with hinges (20) and slag tremie pipe (2), the bottom of portable plate (21) is provided with balance weight iron (22), when flowing to tremie pipe (2), slag arrives slag distribution postpone, removable cover (21) is opened removable cover under the effect of slag gravity, slag flows on the carrier chain row (12) of waste heat recovery case bottom along the slag distributor (7) of bell mouth shape or trapezoidal shape, slag is being distributed under the guide effect of bell mouth shape distributor on the carrier chain row, when containing the slag clinker of bulky grain or sintering in the slag, under the effect of portable plate (20) and hinge (19), make that opening increases between the fixed distributor plate of portable plate (20) and back, the slag of bulky grain or sintering is fallen on the carrier chain row smoothly; Under the effect of counterweight iron block (21), removable cover falls back to original position again then.
Waste heat recovery case described in the utility model (8) is a rectangle, and the boxboard of the front and back boxboard of waste heat recovery case, roof box and an end welds together into ∏ shape, and another termination boxboard of waste heat recovery case is connected with hinge becomes portable plate on the roof box; If the purpose of portable plate is that slag is stuck in the waste heat case and causes device damage when avoiding carrier chain to rafting changeing, the bottom boxboard is replaced by the carrier chain displacement.
At the boxboard of waste heat recovery case (8) one ends or go up on the boxboard and be provided with two holes, installation slag tremie pipe (a 2) hole in; An end mouth of pipe of weldering exhaust tube or exhaust column (17) on another hole, another termination of exhaust tube (17) is connected with the blast pipe of air blast (4), and establish a control valve (5) in the joint, be provided with another control valve (3) at the air intake pipe orifice place of air blast (4), when boiler is worked, after the air blast operation, produce negative pressure in waste heat recovery case (8) and the pump-line (17), through exhaust tube (17) waste heat gas is entered in the air blast (4) under the effect of air blast the slag hot gas that gathers in the collection box, carry out heat exchange with the cold wind in the air blast blast pipe, in the air compartment that hot gas that produces or hot blast are constantly sent to fluidized bed furnace, thereby improved the combustion-supporting gas temperature, increase the thermal efficiency of boiler, reach the purpose of fuel savings coal.
Thereby improved the combustion-supporting gas temperature, increased the thermal efficiency of boiler, reached the purpose of fuel savings coal.
The slag conveying device is by carrier chain row (12), drive sprocket axle (14), passive sprocket shaft (10), cylinder, mounting bracket (15,11), buncher and decelerator compositions such as (8).Carrier chain row structure is riveted on the chain by the rectangle sheet metal or with screw the rectangle sheet metal is fixed on to be formed carrier chain and arranges on the chain.Chain suit sprocket wheel is last.Sprocket wheel is installed in the two ends of cylinder, wheel shaft is installed in the centre bore of sprocket wheel and cylinder, wheel shaft, sprocket wheel and cylinder are become one, one end of drive sprocket axle (14) combines and is installed together with shaft coupling, cycloidal-pin wheel decelerator, and driving belt or chain are installed on belt pulley on belt pulley on the cycloidal-pin wheel reducer shaft or sprocket wheel and the motor shaft or the sprocket wheel.
The utility model has solved the boiling boiler deslagging to the fluctuation that furnace temperature causes, and influences boiler pressure and level fluctuation, has improved combustion air temperature, furnace temperature temperature control face is enlarged, improved the combustion-supporting gas temperature, quick heating increases the thermal efficiency of boiler and the purpose of economizing on coal.Reduce the pollution of the gas of slag volatilization and slag dust, and be convenient to operation control, reduced labor strength environment.
Claims (4)
1. furnace slag residual heat recovering device, by charging aperture, blast cap, ebullated bed, the outstanding section of boiling, the fluidized bed furnace air compartment, boiler body, back-end surfaces, tremie pipe, the counterweight iron block, chain row conveying device, the waste heat recovery case, pump-line, air blast, control valve, the slag distributor is formed, it is characterized in that: activity distribution device (7) is established in slag tremie pipe (2) lower end, the upper port of slag tremie pipe (2) is welded on the slag tremie pipe (1), and connect with slag tremie pipe (1), the lower end activity distribution device (7) of slag tremie pipe (2) is contained in the collection box (8), the other end of collection box is provided with removable cover door (18), one termination of exhaust column (17) is welded on the hole of boxboard on collection box (8) one ends, volume damper (5) is equipped with at other end exhausting tube head place, and be connected with the blast pipe of air blast (4), afterbody at the air blast blast pipe is equipped with volume damper (3), the air blast blast pipe is connected with the air compartment of fluidized bed furnace, is provided with slag carrier chain arranging device below the waste heat recovery case.
2. a kind of furnace slag residual heat recovering device according to claim 1, it is characterized in that: the slag distribution dress device (7) that is located at slag tremie pipe (2) lower end is toroidal or trapezoidal, be provided with portable plate (21) at a toroidal or a trapezoidal side, the top of portable plate is connected with hinge (19) with tremie pipe, and portable plate is provided with counterweight iron block (22).
3. a kind of furnace slag residual heat recovering device according to claim 1 is characterized in that: slag tremie pipe (2) is welded on the former fluidized bed furnace slag tremie pipe (1), is made as 3 ° of-60 ° of angles between slag tremie pipe (2) and the slag tremie pipe (1); The lower port of slag tremie pipe is provided with movable gate, or former fluidized bed furnace slag tremie pipe (1) is disassembled, directly slag tremie pipe (2) is installed in air distribution plate below.
4.. a kind of furnace slag residual heat recovering device according to claim 1, it is characterized in that: the chain in the slag carrier chain arranging device is enclosed within on the sprocket wheel (9,13), sprocket wheel (9,13) is installed in the cylinder two ends respectively, sprocket shaft (10,14) is installed in respectively in the centre bore of sprocket wheel (9,13) and cylinder, the two ends of sprocket shaft (10,14) are installed in respectively on the support (11,15), decelerator (16) is installed on a termination of drive sprocket axle, and driving-belt is sleeved on the belt pulley of decelerator and motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200989433U CN200955757Y (en) | 2006-09-10 | 2006-09-10 | Furnace slag residual heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200989433U CN200955757Y (en) | 2006-09-10 | 2006-09-10 | Furnace slag residual heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200955757Y true CN200955757Y (en) | 2007-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200989433U Expired - Fee Related CN200955757Y (en) | 2006-09-10 | 2006-09-10 | Furnace slag residual heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200955757Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709339A (en) * | 2009-12-11 | 2010-05-19 | 中冶京诚工程技术有限公司 | System and method for recovering slag residual heat |
| CN101915426A (en) * | 2010-09-15 | 2010-12-15 | 任振伟 | Waste-heat recovery device and comprise the dry slag-discharging boiler of this waste-heat recovery device |
| CN101963346A (en) * | 2010-10-19 | 2011-02-02 | 华南理工大学 | Chain boiler for recovering carbon with cinder |
| CN102382976A (en) * | 2011-11-09 | 2012-03-21 | 建业庆松集团有限公司 | Fluidized boiling roasting furnace |
| CN104946308A (en) * | 2015-05-29 | 2015-09-30 | 李观德 | Garbage gasification heat-accumulation smokeless environmental protection furnace |
| CN107036076A (en) * | 2017-06-01 | 2017-08-11 | 福州维金斯农业科技有限公司 | One kind combustion straw particle boiler |
| CN107356115A (en) * | 2016-05-09 | 2017-11-17 | 镇江北新建材有限公司 | A kind of air-distribution device for improving boiling furnace combustion efficiency |
-
2006
- 2006-09-10 CN CNU2006200989433U patent/CN200955757Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709339A (en) * | 2009-12-11 | 2010-05-19 | 中冶京诚工程技术有限公司 | System and method for recovering slag residual heat |
| CN101915426A (en) * | 2010-09-15 | 2010-12-15 | 任振伟 | Waste-heat recovery device and comprise the dry slag-discharging boiler of this waste-heat recovery device |
| CN101963346A (en) * | 2010-10-19 | 2011-02-02 | 华南理工大学 | Chain boiler for recovering carbon with cinder |
| CN101963346B (en) * | 2010-10-19 | 2012-05-23 | 华南理工大学 | Chain boiler for recovering carbon with cinder |
| CN102382976A (en) * | 2011-11-09 | 2012-03-21 | 建业庆松集团有限公司 | Fluidized boiling roasting furnace |
| CN102382976B (en) * | 2011-11-09 | 2013-04-17 | 建业庆松集团有限公司 | Fluidized boiling roasting furnace |
| CN104946308A (en) * | 2015-05-29 | 2015-09-30 | 李观德 | Garbage gasification heat-accumulation smokeless environmental protection furnace |
| CN104946308B (en) * | 2015-05-29 | 2017-08-01 | 李观德 | Refuse gasification accumulation of heat smokeless environment-friendly stove |
| CN107356115A (en) * | 2016-05-09 | 2017-11-17 | 镇江北新建材有限公司 | A kind of air-distribution device for improving boiling furnace combustion efficiency |
| CN107036076A (en) * | 2017-06-01 | 2017-08-11 | 福州维金斯农业科技有限公司 | One kind combustion straw particle boiler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071003 Termination date: 20091012 |