CN217154219U - Waste heat recovery device for coal production electricity - Google Patents
Waste heat recovery device for coal production electricity Download PDFInfo
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- CN217154219U CN217154219U CN202221017173.0U CN202221017173U CN217154219U CN 217154219 U CN217154219 U CN 217154219U CN 202221017173 U CN202221017173 U CN 202221017173U CN 217154219 U CN217154219 U CN 217154219U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model discloses a coal production waste heat recovery device for electricity, including burning boiler, booster water pump, discharge fume the chimney, cinder bin and heat recovery mechanism, burning boiler's exhanst gas outlet is linked together through the flue gas side entry of flue gas conveyer pipe with heat recovery mechanism, be provided with flue gas filter component in the flue gas conveyer pipe, heat recovery mechanism's flue gas side outlet is linked together through the entry of suction machine with discharge fume the chimney, burning boiler's row cinder notch is linked together through the entry of cinder discharge tube with the cinder bin, cinder bin's exhanst gas outlet is linked together through cinder hot gas conveyer pipe and flue gas conveyer pipe, booster water pump is linked together with heat recovery mechanism's water side entry, the device's waste heat recovery efficiency and heat exchange efficiency are higher.
Description
Technical Field
The utility model belongs to the technical field of thermal power, a waste heat recovery device for coal production electricity is related to.
Background
The principle of coal power generation is that coal briquette fuel heats water to generate steam when burning, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, then the steam turbine drives a generator to rotate, the mechanical energy is converted into electric energy, and in order to improve the energy utilization rate in the coal power generation process, the existing power plants are all designed with waste heat recovery devices to recover waste heat generated in the power generation process.
However, the conventional waste heat recovery device has the following disadvantages;
the existing waste heat recovery device can only recover in a single way, namely, the flue gas waste heat and the coal cinder waste heat in the coal power generation process cannot be simultaneously recovered, the waste heat recovery efficiency is low, and the effect is poor.
The existing waste heat recovery device carries out heat exchange process with the high-temperature flue gas outward, fails to carry out effective filtration to cigarette ash and other impurities produced in the high-temperature flue gas, and long-term use easily leads to the thick ash layer of heat exchange tube inner wall bonding, influences the thermal outside transmission of flue gas, also influences the mobility of high-temperature flue gas for heat exchange efficiency is greatly discounted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a coal production waste heat recovery device for electricity, the device's waste heat recovery efficiency and heat exchange efficiency are higher.
In order to achieve the above object, coal production waste heat recovery device for electricity include combustion boiler, booster water pump, discharge fume chimney, cinder bin and heat recovery mechanism, combustion boiler's exhanst gas outlet is linked together through the flue gas side entry of flue gas conveyer pipe with heat recovery mechanism, be provided with flue gas filter component in the flue gas conveyer pipe, heat recovery mechanism's flue gas side outlet is linked together through the entry of suction machine with discharge fume chimney, combustion boiler's row cinder notch is linked together through the entry of cinder discharge tube with cinder bin, cinder bin's exhanst gas outlet is linked together through cinder hot gas conveyer pipe and flue gas conveyer pipe, booster water pump is linked together with heat recovery mechanism's water side entry.
The side of the coal cinder storage box is provided with a cinder discharging door.
The heat recovery mechanism comprises a heat-insulating cylinder, a heat exchange coil is arranged in the heat-insulating cylinder, the upper end of the heat exchange coil is communicated with the flue gas conveying pipe, and the lower end of the heat exchange coil is communicated with the suction machine;
the bottom water inlet of one side surface of the heat-insulating cylinder body is provided with a water inlet flange, the water inlet is communicated with the booster water pump through the water inlet flange, and the top water outlet of the other side surface of the heat-insulating cylinder body is provided with a water outlet flange.
And a first control valve is arranged on the water outlet flange.
The flue gas outlet of the cinder storage tank is communicated with the flue gas conveying pipe through a cinder hot gas conveying pipe and a second control valve.
The smoke filtering component comprises a filtering pipe, a filter screen cylinder is arranged in the filtering pipe, an upper port of the filter screen cylinder is in contact with a check ring arranged on the inner wall of the filtering pipe, a threaded ring is arranged at the bottom end of the filter screen cylinder and is in threaded connection with an internal thread arranged on the inner wall of the filtering pipe, and an end cover is arranged at the bottom end of the threaded ring;
both ends of the filter pipe are respectively provided with an air inlet and an air outlet.
The outside of flue gas conveyer pipe and cinder steam conveyer pipe all is equipped with the rubber and plastic insulation cover.
The water inlet of the heat recovery mechanism is connected with an external domestic water pipeline.
The utility model discloses following beneficial effect has:
waste heat recovery device for coal production electricity when concrete operation, carry out the heat exchange in sending into heat recovery mechanism after flue gas filtering component filters the high temperature flue gas, the cinder that the burning produced simultaneously is sent to the cinder bin through the cinder discharge tube earlier in, then carry the steam that the cinder produced to heat recovery mechanism in through cinder steam conveyer pipe, retrieve in the time of in order to realize coal power generation flue gas waste heat and cinder waste heat, with heating life feedwater, very big improvement waste heat recovery efficiency, it is extravagant to reduce the energy. In addition, through setting up flue gas filtering component, effectively avoid the dust in the flue gas to pile up in heat recovery mechanism, cause the pipeline inner wall to bond to effectively improve heat recovery efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the smoke filter assembly 9.
Fig. 3 is a schematic structural view of the heat recovery mechanism 3.
Wherein, 1 is a combustion boiler, 2 is a coal slag storage tank, 3 is a heat recovery mechanism, 301 is a heat-insulating cylinder, 302 is a heat exchange coil, 303 is a water inlet flange, 304 is a water outlet flange, 305 is a first control valve, 4 is a smoke exhaust chimney, 5 is a coal slag discharge pipe, 6 is a flue gas delivery pipe, 7 is a coal slag hot gas delivery pipe, 8 is a second control valve, 9 is a flue gas filtering component, 901 is a filtering pipe, 902 is a filtering screen cylinder, 903 is a retaining ring, 904 is a threaded ring, 905 is an end cover, 906 is an air inlet, 907 is an air outlet, 10 is suction, 11 is a booster water pump, 12 is a slag discharge door, and 13 is a rubber and plastic heat-insulating sleeve.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
A schematic structural diagram according to an embodiment of the present disclosure is shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, 2 and 3, the waste heat recovery device for coal production electricity of the present invention comprises a combustion boiler 1, a cinder storage tank 2 and a heat recovery mechanism 3, wherein a flue gas outlet of the combustion boiler 1 is communicated with a flue gas side inlet of the heat recovery mechanism 3 through a flue gas delivery pipe 6, a flue gas filtering component 9 is arranged in the flue gas delivery pipe 6, the flue gas side outlet of the heat recovery mechanism 3 is communicated with an inlet of a smoke exhaust chimney 4 through a suction machine 10, a slag discharge port of the combustion boiler 1 is communicated with an inlet of the cinder storage tank 2 through a cinder discharge pipe 5, the flue gas outlet of the cinder storage tank 2 is communicated with the flue gas delivery pipe 6 through a cinder hot gas delivery pipe 7 and a second control valve 8, a slag discharge door 12 is arranged on the side of the cinder storage tank 2, a booster water pump 11 is communicated with a water side inlet of the heat recovery mechanism 3, the size of the hot gas conveying opening of the cinder can be conveniently controlled by personnel according to the cinder quantity through the second control valve 8.
The heat recovery mechanism 3 comprises a heat-insulating cylinder 301, a heat exchange coil 302 is arranged in the heat-insulating cylinder 301, the upper end of the heat exchange coil 302 is communicated with the flue gas conveying pipe 6, and the lower end of the heat exchange coil 302 is communicated with the suction machine 10.
The bottom water inlet department of thermal insulation barrel 301 one side is provided with into water flange 303, the water inlet is linked together with booster pump 11 through into water flange 303, and the top water outlet department of thermal insulation barrel 301 another side is provided with out water flange 304, installs first control valve 305 on going out water flange 304, can make things convenient for personnel to control the hot water discharge volume according to actual need through first control valve 305.
The flue gas filtering component 9 comprises a filtering pipe 901, a filter screen cylinder 902 is arranged inside the filtering pipe 901, the upper port of the filter screen cylinder 902 is in contact with a retainer ring 903 arranged on the inner wall of the filtering pipe 901, a threaded ring 904 is arranged at the bottom end of the filter screen cylinder 902, the threaded ring 904 is in threaded connection with internal threads arranged on the inner wall of the filtering pipe 901, and an end cover 905 is arranged at the bottom end of the threaded ring 904;
both ends of the filter pipe 901 are respectively provided with an air inlet 906 and an air outlet 907, and the sizes of the air inlet 906 and the air outlet 907 are matched with the size of the pipe orifice of the flue gas conveying pipe 6.
The setting of unloading the sediment door 12 can make things convenient for personnel to clear up heat recovery's cinder, and flue gas conveyer pipe 6 and cinder steam conveyer pipe 7's outside all is overlapped and is equipped with rubber and plastic insulation cover 13, and rubber and plastic insulation cover 13 can improve flue gas conveyer pipe 6 and cinder steam conveyer pipe 7's heat preservation effect, reduces calorific loss.
The utility model discloses a working process does:
when the coal cinder heat recovery device is used, the suction machine 10 is started, high-temperature flue gas generated by coal combustion enters the flue gas conveying pipe 6 under the suction of the suction machine 10, meanwhile, cinder falling from a cinder discharging opening of the combustion boiler 1 is guided into the cinder storage tank 2 through the cinder discharging pipe 5, cinder hot gas enters the flue gas conveying pipe 6 through the cinder hot gas conveying pipe 7 to form mixed gas with the high-temperature flue gas, the mixed gas enters the flue gas filtering component 9, is filtered through the filter screen cylinder 902 in the flue gas filtering component 9 and then enters the heat recovery mechanism 3, at the moment, the booster pump 11 pumps outside normal-temperature water into the heat insulation cylinder 301, the water body finishes heat exchange with the high-temperature gas in the heat exchange coil 302 in the process of gradually rising from bottom to top, then the gas is discharged from the bottom end of the heat exchange coil 302 and then enters the smoke exhaust chimney 4 through the suction machine 10 to be discharged, hot water generated by the heat exchange is discharged into an external living water pipeline through the water outlet flange 304 of the heat insulation cylinder 301, the heat recovery device can provide hot water for surrounding residents, thereby achieving the purpose of heat recovery.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A waste heat recovery device for coal production electricity is characterized by comprising a combustion boiler (1) and a booster water pump (11), the device comprises a discharge chimney (4), a cinder storage box (2) and a heat recovery mechanism (3), wherein a flue gas outlet of a combustion boiler (1) is communicated with a flue gas side inlet of the heat recovery mechanism (3) through a flue gas conveying pipe (6), a flue gas filtering component (9) is arranged in the flue gas conveying pipe (6), the flue gas side outlet of the heat recovery mechanism (3) is communicated with an inlet of the discharge chimney (4) through a suction machine (10), a cinder discharging port of the combustion boiler (1) is communicated with an inlet of the cinder storage box (2) through a cinder discharging pipe (5), a flue gas outlet of the cinder storage box (2) is communicated with the flue gas conveying pipe (6) through a cinder hot gas conveying pipe (7), and a booster water pump (11) is communicated with a water side inlet of the heat recovery mechanism (3).
2. The waste heat recovery device for coal production electricity according to claim 1, characterized in that a slag discharge door (12) is provided at a side of the slag storage tank (2).
3. The waste heat recovery device for the coal production electricity according to claim 1, wherein the heat recovery mechanism (3) comprises a heat-insulating cylinder (301), a heat exchange coil (302) is arranged in the heat-insulating cylinder (301), the upper end of the heat exchange coil (302) is communicated with the flue gas conveying pipe (6), and the lower end of the heat exchange coil (302) is communicated with the suction machine (10);
the bottom water inlet of one side of the heat-insulating cylinder body (301) is provided with a water inlet flange (303), the water inlet is communicated with the booster water pump (11) through the water inlet flange (303), and the top water outlet of the other side of the heat-insulating cylinder body (301) is provided with a water outlet flange (304).
4. The waste heat recovery device for coal production electricity according to claim 3, wherein the water outlet flange (304) is provided with a first control valve (305).
5. The waste heat recovery device for coal production electricity according to claim 4, wherein the flue gas outlet of the coal cinder storage tank (2) is communicated with the flue gas conveying pipe (6) through a coal cinder hot gas conveying pipe (7) and a second control valve (8).
6. The coal production electricity waste heat recovery device according to claim 1, wherein the flue gas filtering component (9) comprises a filtering pipe (901), a filter screen cylinder (902) is arranged inside the filtering pipe (901), an upper port of the filter screen cylinder (902) is in contact with a retainer ring (903) arranged on the inner wall of the filtering pipe (901), a threaded ring (904) is arranged at the bottom end of the filter screen cylinder (902), the threaded ring (904) is in threaded connection with an internal thread arranged on the inner wall of the filtering pipe (901), and an end cover (905) is arranged at the bottom end of the threaded ring (904);
both ends of the filter pipe (901) are respectively provided with an air inlet (906) and an air outlet (907).
7. The waste heat recovery device for coal production electricity according to claim 1, wherein the outer parts of the flue gas conveying pipe (6) and the cinder hot gas conveying pipe (7) are sleeved with rubber and plastic heat preservation sleeves (13).
8. The waste heat recovery device for coal production power according to claim 1, wherein an external domestic water pipe is connected to a water side inlet of the heat recovery means (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221017173.0U CN217154219U (en) | 2022-04-24 | 2022-04-24 | Waste heat recovery device for coal production electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221017173.0U CN217154219U (en) | 2022-04-24 | 2022-04-24 | Waste heat recovery device for coal production electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217154219U true CN217154219U (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221017173.0U Active CN217154219U (en) | 2022-04-24 | 2022-04-24 | Waste heat recovery device for coal production electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217154219U (en) |
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2022
- 2022-04-24 CN CN202221017173.0U patent/CN217154219U/en active Active
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