CN215372442U - Circulating fluidized bed boiler waste residue waste heat recycling device - Google Patents
Circulating fluidized bed boiler waste residue waste heat recycling device Download PDFInfo
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- CN215372442U CN215372442U CN202120605848.2U CN202120605848U CN215372442U CN 215372442 U CN215372442 U CN 215372442U CN 202120605848 U CN202120605848 U CN 202120605848U CN 215372442 U CN215372442 U CN 215372442U
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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
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Abstract
The utility model discloses a waste residue and heat recycling device of a circulating fluidized bed boiler, which comprises a circulating fluidized bed boiler main body and a treatment bin, wherein the treatment bin is arranged below a slag discharge port of the circulating fluidized bed boiler main body, the treatment bin is of a cylindrical tubular structure, a spiral type material guiding structure is arranged in the treatment bin, and one end of the treatment bin is provided with a cold ash discharge port, the utility model relates to the technical field of waste residue and heat recycling of the circulating fluidized bed boiler, ash residues generated after combustion of the boiler main body enter the treatment bin through the slag discharge port, the spiral type material guiding structure is used for guiding and conveying the ash residues, an air-cooled heat exchange structure is started to inject cold air into the treatment bin in the conveying process to exchange heat emitted from the ash residues, so that the temperature of air flow is improved, the heat in the waste residues is fully recycled, and the overall operation efficiency of the boiler main body is improved, simple structure, heat recovery efficiency is high.
Description
Technical Field
The utility model relates to the technical field of waste residue and heat recovery of circulating fluidized bed boilers, in particular to a waste residue and heat recycling device of a circulating fluidized bed boiler.
Background
The circulating fluidized bed boiler adopts a clean coal combustion technology with the highest industrialization degree, adopts fluidized combustion, and mainly structurally comprises a combustion chamber and a circulating return furnace, the circulating fluidized bed boiler can burn inferior fuel with the outstanding advantages in the aspect of environmental protection, and is rapidly developed at home and abroad, and generates a large amount of ash and slag when burning inferior fuel.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a waste residue and waste heat recycling device of a circulating fluidized bed boiler, which solves the problems in the background art.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a waste residue waste heat recycling device of a circulating fluidized bed boiler comprises a circulating fluidized bed boiler main body and a treatment bin, wherein the treatment bin is arranged below a residue discharge port of the circulating fluidized bed boiler main body and is of a cylindrical tubular structure, a spiral material guide structure is arranged in the treatment bin, a cold ash discharge port is arranged at one end of the treatment bin, a cold air heat exchange structure is arranged on the inner side of the treatment bin, and one end of the cold air heat exchange structure is communicated with an air inlet of an air preheater of the circulating fluidized bed boiler main body;
spiral guide structure includes: the spiral material guide device comprises a driving control assembly and a spiral material guide assembly, wherein the driving control assembly is arranged at one end of a treatment bin, the spiral material guide assembly is arranged in the treatment bin, one end of the spiral material guide assembly is rotatably connected with the treatment bin, and the other end of the spiral material guide assembly penetrates through the treatment bin and is connected with the driving control assembly;
the cold wind heat transfer structure includes: the air blower is arranged on one side of the treatment bin, the heat exchange flow guide assembly is arranged on the inner side wall surface of the treatment bin, and the temperature control adjusting assembly is arranged on the heat exchange flow guide assembly.
Preferably, the heat exchange flow guide assembly comprises: the heat exchange tube is spirally attached to the inner side wall surface of the treatment bin, one end of the heat exchange tube is communicated with an air outlet of the air blower, the other end of the heat exchange tube is communicated with an air inlet of the air preheater, and the annular heat conducting tube is fixedly arranged in the treatment bin and attached to the heat exchange tube.
Preferably, the temperature control regulating assembly comprises: the temperature sensor is arranged on the inner side wall surface of the air outlet end of the heat exchange tube, the electric control flow control valve is fixedly sleeved on the air outlet end of the heat exchange tube, and the temperature sensor and the electric control flow control valve are respectively connected with the controller.
Preferably, the drive control assembly includes: servo motor, reduction gear and shaft coupling, servo motor sets up and handles storehouse one side, the input of reduction gear is connected with servo motor's drive end, the fixed suit of shaft coupling is on the output of reduction gear.
Preferably, the spiral guide assembly includes: the spiral guide rod is rotatably arranged in the treatment bin and is attached to the inner side wall surface of the annular heat conducting cylinder, one end of the connecting shaft is connected with the spiral guide rod, and the other end of the connecting shaft is connected with the coupler.
Preferably, the inner side wall surface of the annular heat conducting cylinder is sprayed with an antioxidant wear-resistant coating.
Advantageous effects
The utility model provides a waste residue and heat recycling device for a circulating fluidized bed boiler. The method has the following beneficial effects: the waste heat recycling device for the waste residue of the circulating fluidized bed boiler comprises a treatment bin arranged below a residue discharge port of a main body of the circulating fluidized bed boiler, a spiral type material guide structure is arranged in the treatment bin, an air-cooled heat exchange structure is arranged at one end of the treatment bin, ash residues generated after the main body of the circulating fluidized bed boiler burns enter the treatment bin through the residue discharge port, the spiral type material guide structure is used for guiding and conveying the ash residues, the air-cooled heat exchange structure is started to inject cold air into the treatment bin in the conveying process, the cold air is exchanged with heat emitted from the ash residues, so that the temperature of air flow is improved, the heat in the waste residue is fully recovered, the led hot air is recycled to an air preheater, the initial temperature of the air entering the air preheater is further improved, the overall operation efficiency of the main body of the circulating fluidized bed boiler is improved, the structure is simple, the heat recovery efficiency is high, and the problem in the prior art is solved, the waste residue after burning the sintering beam generally can discharge after cooling, however because the waste residue temperature is higher, can give out the waste heat for a long time during the cooling, discharges at will and will cause the energy loss, the lower problem of whole energy utilization ratio of circulating fluidized bed boiler.
Drawings
Fig. 1 is a schematic view of a main sectional view of a waste residue waste heat recycling device of a circulating fluidized bed boiler.
Fig. 2 is a schematic side view of the waste residue waste heat recycling device of the circulating fluidized bed boiler.
Fig. 3 is a schematic structural diagram of a top view of the waste residue waste heat recycling device of the circulating fluidized bed boiler.
Fig. 4 is a schematic view of a position a of the waste residue waste heat recycling device of the circulating fluidized bed boiler according to the present invention.
In the figure: 1-a circulating fluidized bed boiler main body; 2, a treatment bin; 3-a slag discharge port; 4-a cold ash discharge port; 5-a blower; 6-heat exchange tube; 7-an annular heat-conducting cylinder; 8-a temperature sensor; 9-electrically controlled flow regulating valve; 10-a controller; 11-a servo motor; 12-a reducer; 13-a coupler; 14-a spiral guide rod; 15-connecting shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
All the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, and specific connection and control sequences should be obtained.
Referring to fig. 1-4, the present invention provides a waste residue and heat recycling device for a circulating fluidized bed boiler:
example (b): as can be known from the attached drawings 1-4 of the specification, the scheme comprises a circulating fluidized bed boiler main body 1 and a treatment bin 2, the position relation and the connection relation are as follows, the treatment bin 2 is arranged below a slag discharge port 3 of the circulating fluidized bed boiler main body 1, the treatment bin 2 is of a cylindrical tubular structure, a spiral type material guiding structure is arranged in the treatment bin 2, one end of the treatment bin 2 is provided with a cold ash discharge port 4, the inner side of the treatment bin 2 is provided with a cold air heat exchange structure, one end of the cold air heat exchange structure is communicated with an air inlet of an air preheater of the circulating fluidized bed boiler main body 1, the treatment bin 2 is arranged below the slag discharge port 3 of the circulating fluidized bed boiler main body 1, the spiral type material guiding structure is arranged in the treatment bin 2, one end of the treatment bin 2 is provided with an air cooling heat exchange structure, ash generated after the circulating fluidized bed boiler main body 1 is combusted enters the treatment bin 2 through the slag discharge port 3, the spiral type material guiding structure is used for guiding and conveying ash, in the conveying process, the air-cooled heat exchange structure is started to inject cold air into the treatment bin 2 to exchange heat emitted from the ash, so that the temperature of air flow is improved, the heat in waste residues is fully recovered, the guided hot air is supplied to the air preheater, the initial temperature of the air entering the air preheater is further improved, the overall operation efficiency of the circulating fluidized bed boiler main body 1 is improved, the structure is simple, and the heat recovery efficiency is high;
in a specific implementation process, the spiral material guiding structure comprises: drive control subassembly and spiral guide subassembly, drive control subassembly sets up in one of treatment bin 2 is served, and spiral guide subassembly sets up in treatment bin 2, and the one end of spiral guide subassembly is rotated with treatment bin 2 and is connected, the other end runs through treatment bin 2 and is connected with drive control subassembly, and wherein cold wind heat transfer structure includes: air-blower 5, heat transfer water conservancy diversion subassembly and accuse temperature adjusting part, air-blower 5 sets up in 2 one sides in the processing storehouse, heat transfer water conservancy diversion subassembly sets up on the side wall surface in the processing storehouse 2, accuse temperature adjusting part sets up on heat transfer water conservancy diversion subassembly, when using, high temperature lime-ash enters into in the processing storehouse 2 through the row cinder notch 3 of circulating fluidized bed boiler main part 1, start air-blower 5 with in cold air injection heat transfer water conservancy diversion subassembly, exchange with the heat that gives out in the lime-ash, and then improve the air temperature, and cool off the lime-ash, utilize accuse temperature adjusting part to carry out temperature monitoring to heat transfer water conservancy diversion subassembly exhaust hot-air simultaneously, carry out rotation control to spiral guide subassembly through the drive control subassembly, make the lime-ash overturn in processing storehouse 2 and remove, and constantly give out the heat.
As can be seen from fig. 1 to 4 in the specification, in a specific implementation process, the heat exchange flow guide assembly includes: heat exchange tube 6 and annular heat conduction section of thick bamboo 7, heat exchange tube 6 be the heliciform subsides adorn on the inside wall face of handling storehouse 2 and one end is linked together with air blower 5's air outlet, the other end is linked together with air heater's air intake, annular heat conduction section of thick bamboo 7 is fixed to be set up in handling storehouse 2 and to laminate mutually with heat exchange tube 6, wherein accuse temperature adjusting part includes: a temperature sensor 8 and an electric control flow regulating valve 9, wherein the temperature sensor 8 is arranged on the inner side wall surface of the air outlet end of the heat exchange tube 6, the electric control flow regulating valve 9 is fixedly sleeved on the air outlet end of the heat exchange tube 6, the temperature sensor 8 and the electric control flow regulating valve 9 are respectively connected with a controller 10, when in use, a blower 5 injects cold air into the heat exchange tube 6, heat in ash residues heats the cold air through an annular heat conducting cylinder 7 and the tube wall of the heat exchange tube 6, the heated hot air is returned to an air preheater of the circulating fluidized bed boiler main body 1, meanwhile, the temperature sensor 8 is used for monitoring the air temperature at the air outlet end of the heat exchange tube 6 and converting the monitoring result into an electric signal to be sent to the controller 10, the controller 10 controls the electric control flow regulating valve 9 to act according to the monitoring result, thereby regulating the air flow rate in the heat exchange tube 6, the heat exchange efficiency is improved.
As can be seen from fig. 1 to 4 of the specification, in a specific implementation process, the driving control assembly includes: servo motor 11, reduction gear 12 and shaft coupling 13, servo motor 11 sets up 2 one sides in processing storehouse, and the input of reduction gear 12 is connected with servo motor 11's drive end, and the fixed suit of shaft coupling 13 is on the output of reduction gear 12, and wherein spiral guide subassembly includes: spiral guide rod 14 and connecting axle 15, spiral guide rod 14 rotates and sets up in handling storehouse 2 and pastes with the interior lateral wall face of annular heat-conducting cylinder 7 mutually, the one end of connecting axle 15 is connected with spiral guide rod 14, the other end is connected with shaft coupling 13, when using, start servo motor 11, servo motor 11's drive end rotates, and then drive reduction gear 12's input rotates, reduction gear 12's input rotates and then drives reduction gear 12's output and rotate, thereby drive shaft coupling 13 and the connecting axle 15 of shaft coupling 13 one end and rotate, connecting axle 15 rotates and then drives spiral guide rod 14 and rotate, thereby utilize the cooperation of spiral guide rod 14 and annular heat-conducting cylinder 7 to realize the screw transport operation to the lime-ash, the low temperature lime-ash after the heat transfer is discharged through cold lime-ash discharge opening 4.
In the specific implementation process, the inner side wall surface of the annular heat conducting cylinder 7 is sprayed with the antioxidant wear-resistant coating, so that the antioxidant and wear-resistant performances of the inner side wall surface of the annular heat conducting cylinder 7 are improved.
To sum up, this recycling device of waste residue and heat of circulating fluidized bed boiler, set up the treatment bin 2 below the row's cinder notch 3 of circulating fluidized bed boiler main part 1, be provided with spiral guide structure in the treatment bin 2, the one end of treatment bin 2 is provided with the air-cooled heat transfer structure, the lime-ash that produces after circulating fluidized bed boiler main part 1 burns enters into the treatment bin 2 through row's cinder notch 3, utilize spiral guide structure to carry out the guide transport to the lime-ash, in transportation process, start the air-cooled heat transfer structure and pour into treatment bin 2 with cold wind, exchange with the heat that gives out in the lime-ash, thereby improve the temperature of the air current, fully recover the heat in the waste residue, the hot-blast confession to air heater of derivation, further improve the air initial temperature that enters into air heater, improve circulating fluidized bed boiler main part 1's whole operating efficiency, moreover, the steam generator is simple in structure, heat recovery efficiency is high, the problem of among the prior art, the waste residue after burning the sintering beam generally can discharge after the cooling again, however because the waste residue temperature is higher, can give out the waste heat for a long time during the cooling, discharges at will and will cause the energy loss, circulating fluidized bed boiler's whole energy utilization is lower is solved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The waste residue waste heat recycling device of the circulating fluidized bed boiler comprises a circulating fluidized bed boiler main body (1) and a treatment bin (2), and is characterized in that the treatment bin (2) is arranged below a slag discharge port (3) of the circulating fluidized bed boiler main body (1), the treatment bin (2) is of a cylindrical tubular structure, a spiral type material guide structure is arranged in the treatment bin (2), a cold ash discharge port (4) is arranged at one end of the treatment bin (2), a cold air heat exchange structure is arranged on the inner side of the treatment bin (2), and one end of the cold air heat exchange structure is communicated with an air inlet of an air preheater of the circulating fluidized bed boiler main body (1);
spiral guide structure includes: the device comprises a driving control assembly and a spiral material guiding assembly, wherein the driving control assembly is arranged at one end of a treatment bin (2), the spiral material guiding assembly is arranged in the treatment bin (2), one end of the spiral material guiding assembly is rotatably connected with the treatment bin (2), and the other end of the spiral material guiding assembly penetrates through the treatment bin (2) and is connected with the driving control assembly;
the cold wind heat transfer structure includes: air-blower (5), heat transfer water conservancy diversion subassembly and accuse temperature adjusting part, air-blower (5) set up in processing storehouse (2) one side, the heat transfer water conservancy diversion subassembly sets up on the wall surface in processing storehouse (2), accuse temperature adjusting part sets up on the heat transfer water conservancy diversion subassembly.
2. The recycling device for waste residue and heat of a circulating fluidized bed boiler according to claim 1, wherein the heat exchange flow guide assembly comprises: the heat exchange device comprises a heat exchange tube (6) and an annular heat conduction cylinder (7), wherein the heat exchange tube (6) is spirally attached to the inner side wall surface of the treatment bin (2), one end of the heat exchange tube is communicated with an air outlet of the air blower (5), the other end of the heat exchange tube is communicated with an air inlet of the air preheater, and the annular heat conduction cylinder (7) is fixedly arranged in the treatment bin (2) and attached to the heat exchange tube (6).
3. The recycling device for the waste residue and heat of the circulating fluidized bed boiler according to claim 2, wherein the temperature control adjusting assembly comprises: temperature sensor (8) and automatically controlled flow control valve (9), temperature sensor (8) set up on the air-out of heat exchange tube (6) holds the inner wall face, the fixed suit of automatically controlled flow control valve (9) is served in the air-out of heat exchange tube (6), temperature sensor (8) and automatically controlled flow control valve (9) are connected with controller (10) respectively.
4. The recycling apparatus for waste residue and heat of circulating fluidized bed boiler according to claim 3, wherein said driving control assembly comprises: servo motor (11), reduction gear (12) and shaft coupling (13), servo motor (11) set up and handle storehouse (2) one side, the input of reduction gear (12) is connected with the drive end of servo motor (11), fixed suit is on the output of reduction gear (12) in shaft coupling (13).
5. The recycling device for waste residue heat of the circulating fluidized bed boiler according to claim 4, wherein the spiral material guiding assembly comprises: spiral guide rod (14) and connecting axle (15), spiral guide rod (14) rotate set up in handling storehouse (2) and paste mutually with annular heat conduction cylinder (7) inside wall face, the one end of connecting axle (15) is connected with spiral guide rod (14), and the other end is connected with shaft coupling (13).
6. The recycling device of the waste residue and heat of the circulating fluidized bed boiler according to any one of claims 2 to 5, wherein an oxidation-resistant and wear-resistant coating is sprayed on the inner side wall surface of the annular heat-conducting cylinder (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120605848.2U CN215372442U (en) | 2021-03-25 | 2021-03-25 | Circulating fluidized bed boiler waste residue waste heat recycling device |
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| CN202120605848.2U CN215372442U (en) | 2021-03-25 | 2021-03-25 | Circulating fluidized bed boiler waste residue waste heat recycling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116589205A (en) * | 2023-06-02 | 2023-08-15 | 浙江钙科科技股份有限公司 | Magnesia classified suspension calcination production line and suspension calcination process based on Internet |
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2021
- 2021-03-25 CN CN202120605848.2U patent/CN215372442U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116589205A (en) * | 2023-06-02 | 2023-08-15 | 浙江钙科科技股份有限公司 | Magnesia classified suspension calcination production line and suspension calcination process based on Internet |
| CN116589205B (en) * | 2023-06-02 | 2024-02-06 | 浙江钙科科技股份有限公司 | Magnesia classified suspension calcination production line and suspension calcination process based on Internet |
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