CN210832019U - System for heating garbage pool by using waste heat - Google Patents
System for heating garbage pool by using waste heat Download PDFInfo
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- CN210832019U CN210832019U CN201920897148.8U CN201920897148U CN210832019U CN 210832019 U CN210832019 U CN 210832019U CN 201920897148 U CN201920897148 U CN 201920897148U CN 210832019 U CN210832019 U CN 210832019U
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- leachate
- pipeline
- pool
- sewage
- garbage
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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
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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Abstract
A system for heating a waste reservoir using waste heat, comprising: the sewage treatment system comprises a sewage discharge flash tank, a surface type heat exchanger, a sewage discharge pipeline, a garbage pool, a leachate collecting pool, a leachate pipeline and a leachate pressure pump, wherein sewage is heated to leachate by the surface type heat exchanger, so that the heated leachate flows back to the garbage pool again to increase the fermentation temperature; the system for heating the garbage pool by utilizing the waste heat carries out heating treatment on the hot water in the garbage pool by utilizing the waste heat of the originally wasted sewage, so that the domestic garbage is fully fermented to increase the heat value, the generated energy of a power plant is improved, the fully fermented domestic garbage is more fully combusted, and less harmful gas is discharged; on the other hand, the exchange cold water required by sewage discharge is saved; moreover, the fermented garbage absorbs more leachate, and the leachate treatment cost is greatly reduced.
Description
Technical Field
The utility model relates to a refuse treatment technical field specifically is a system for utilize waste heat to give rubbish pond heating.
Background
Along with the national economic development and the improvement of the living standard of people, the domestic garbage is increased, the garbage treatment task is heavier and heavier, and the treatment cost is higher; the waste utilization engineering of the household garbage solves the problem of accumulation of the household garbage on one hand, and can reduce the treatment cost and obtain partial benefits on the other hand.
The domestic garbage can be used for incineration power generation in power generation projects, the garbage heat value is closely related to the garbage fermentation degree, the higher the environmental temperature is, the better the fermentation efficiency is, and the higher the heat value entering the garbage pool is. The boiler and the steam turbine in the household garbage incineration power plant discharge sewage and drain water, and a large amount of waste heat sources cannot be reused; in the existing household garbage incineration power plant, a heating system cannot be arranged in the garbage pool due to the working characteristics, and in winter, particularly in the winter in the north, the garbage is characterized by low moisture, but the insufficient fermentation and low heat value of the garbage are caused by the low temperature of the garbage pool. The waste has a low calorific value, and the following consequences can be caused:
the load of the incineration boiler is low, and the power generation capacity of the whole plant is reduced;
the garbage can not be normally combusted;
the generation amount of harmful gases such as dioxin and the like is greatly increased in the incineration process, and the environmental protection is influenced.
SUMMERY OF THE UTILITY MODEL
A system for heating a waste reservoir using waste heat, comprising: a sewage discharge flash tank 1, a surface type heat exchanger 2, a sewage discharge pipeline 3, a garbage pool 4, a leachate collecting pool 5, a leachate pipeline 6, a leachate pressure pump 7, wherein the sewage generated by an incineration boiler and a steam turbine in the power plant is introduced into a sewage flash tank 1 for flash-up and pressure reduction, the sewage flash tank 1 is connected with a first port of a surface type heat exchanger 2 through a sewage pipeline 3, a second port of the surface type heat exchanger 2 is connected with the sewage pipeline 3 for discharging the sewage after heat exchange, the bottom of a garbage pool 4 is provided with a leachate discharge port, the leachate discharge port is provided with a leachate pipeline 6 leading to a leachate collecting tank 5 to introduce leachate from the garbage tank 4 into the leachate collecting tank 5, a leachate collecting pool 5 and a second port of the surface heat exchanger 2 are communicated by a leachate pipeline 6, and a leachate outlet end of the leachate pipeline 6 connected with the first port of the surface heat exchanger 2 is positioned at the upper part of the inlet end of the garbage pool 5; a leachate pipeline 6 between the leachate collecting pool 5 and the surface heat exchanger 2 is provided with a leachate pressure pump 7 for providing flowing power for leachate;
wherein, the flowing direction of the sewage and the leachate in the surface heat exchanger 2 is opposite, and the outside of the room temperature of the leachate pipeline 6 is provided with a heat-insulating layer.
The utility model relates to a waste heat gives rubbish pond heating system and gives waste sewage and give leachate through the waste heat transfer of surface heat exchanger 2 with the sewage, and the leachate that will rise the temperature returns rubbish in the heating pond in rubbish pond 4 again, promotes rubbish and ferments fast under the high temperature condition, improves calorific value and electric field generated energy.
Preferably, in the system for heating the garbage pool by using the waste heat, the bottom surface of the garbage pool 4 is an inclined surface, and the inclined surface inclines towards the direction of the leachate discharge port. The inclined bottom surface is convenient for the flowing and gathering of leachate in the garbage pool 4 and realizes subsequent heat exchange and temperature rise through a leachate discharge port.
Preferably, in the system for heating the garbage pool by using the waste heat, a plane enclosed by the upper port of the garbage pool 4 is an inclined plane, and a liquid outlet of the leachate pipeline 6 above the garbage pool 4 is positioned at a higher horizontal plane.
The heated leachate is firstly sprayed to the upper end face of the garbage pool, and the leachate flows on the horizontal and vertical planes from top to bottom and soaks and heats the garbage, so that the high-temperature leachate can flow throughout the whole garbage pool 4.
Preferably, in the system for heating the waste pool by using the waste heat, the inclination angle α of the bottom surface of the waste pool 4 is 5 to 17 degrees, and the inclination angle β of the plane enclosed by the upper port of the waste pool 4 is 15 to 40 degrees.
Preferably, utilize the system that waste heat gave the heating of rubbish pond, the play liquid end of 4 upper ends in rubbish ponds mouth top leachate pipeline 6 is provided with the shower nozzle, and the high temperature leachate of being convenient for sprays the rubbish in the rubbish pond on, the rubbish contact and the heat transfer of being bigger tracts of land fast improve the holistic fermentation degree of consistency of rubbish.
Preferably, in the system for heating the garbage pool by using the waste heat, the inclination direction of the upper port plane of the garbage pool 4 is opposite to the inclination direction of the bottom surface. Therefore, the heated leachate can be more effectively contacted with the garbage to be heated.
Preferably, the system for heating the garbage pool by using the waste heat has the advantages that a plurality of leachate discharge ports are formed in the bottom of the garbage pool 4, each leachate discharge port is connected with one leachate collecting pool 5 through a leachate pipeline 6, and the leachate collecting pools 5 are communicated through pipelines. The overflow under the condition of excessive leachate is avoided.
Preferably, in the system for heating the garbage pool by using the waste heat, the sewage discharge pipeline 3 between the sewage discharge flash tank 1 and the surface type heat exchanger 2 is connected with a cooling device 8 through a side branch pipeline, the front end of a water flow pipeline of the cooling device 8 is provided with a temperature sensor 81, and the side branch pipeline is provided with a stop valve and an adjusting valve.
The best fermentation temperature of rubbish is in certain temperature range, and the blowdown flash tank 1 exhaust blow off water temperature need earlier cool down the blowdown water and carry out the heat transfer to the leachate when too high, and wherein cooling device can be the cooling arrangement among the prior art, also can be to the water injection equipment that adds cold water in the blowdown water.
Preferably, the system for heating the garbage pool by using the waste heat has the advantages that the sewage discharge pipeline 3 connected with the second port of the surface type heat exchanger 2 is communicated with the sewage discharge pipeline 3 connected with the first port of the surface type heat exchanger 2 through the side branch return pipeline 9, and the side branch return pipeline 9 is internally provided with a stop valve, an adjusting valve and a booster pump.
The sewage temperature through surface heat exchanger 2 is lower, when the temperature of upstream sewage is high slightly and need the cooling, can directly choose for use to sneak into the mode of low temperature sewage and cool off, sparingly opens the required cost of cooling device 8, through stop valve, the governing valve of installation respectively the water yield of control switch and backward flow in the collateral branch return line 9.
Preferably, the system for heating the garbage pool by using the waste heat is characterized in that a liquid level meter is installed in the leachate collecting pool 5, a stop valve and an adjusting valve are installed on a sewage discharge pipeline 3 between the surface heat exchanger 2 and the leachate collecting pool 5, and when the liquid level meter measures that leachate in the leachate collecting pool 5 reaches a certain liquid level height, the whole heating system is started, so that energy is saved.
The temperature sensor and the liquid level meter are connected with the PLC and transmit the sensing information to the PLC, and the PLC controls the opening state of the corresponding stop valve and the corresponding regulating valve; of course, both can be manually operated.
Description of the drawings:
the embodiments are further described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the system for heating a garbage pool by using waste heat according to the present invention;
the specific structure corresponding to the number is as follows:
a sewage flash tank 1, a surface type heat exchanger 2, a sewage pipeline 3, a garbage pool 4, a leachate collecting pool 5, a leachate pipeline 6, a leachate pressure pump 7, a cooling device 8, a temperature sensor 81, a collateral branch return pipeline 9,
the following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
Specific embodiment example 1:
a system for heating a waste reservoir using waste heat, comprising: a sewage discharge flash tank 1, a surface type heat exchanger 2, a sewage discharge pipeline 3, a garbage pool 4, a leachate collecting pool 5, a leachate pipeline 6, a leachate pressure pump 7, wherein the sewage generated by an incineration boiler and a steam turbine in the power plant is introduced into a sewage flash tank 1 for flash-up and pressure reduction, the sewage flash tank 1 is connected with a first port of a surface type heat exchanger 2 through a sewage pipeline 3, a second port of the surface type heat exchanger 2 is connected with the sewage pipeline 3 for discharging the sewage after heat exchange, the bottom of a garbage pool 4 is provided with a leachate discharge port, the leachate discharge port is provided with a leachate pipeline 6 leading to a leachate collecting tank 5 to introduce leachate from the garbage tank 4 into the leachate collecting tank 5, a leachate collecting pool 5 and a second port of the surface heat exchanger 2 are communicated by a leachate pipeline 6, and a leachate outlet end of the leachate pipeline 6 connected with the first port of the surface heat exchanger 2 is positioned at the upper part of the inlet end of the garbage pool 5; a leachate pipeline 6 between the leachate collecting pool 5 and the surface heat exchanger 2 is provided with a leachate pressure pump 7 for providing flowing power for leachate; the flow direction of sewage and leachate in the surface heat exchanger 2 is opposite, a heat-insulating layer is arranged outside the room temperature of the leachate pipeline 6, and a spray head is arranged at the liquid outlet end of the leachate pipeline 6 above the upper port of the garbage pool 4.
The plane that the bottom surface of rubbish pond 4, upper port enclose is the inclined plane, the inclined plane inclines towards the direction of leachate discharge port, and the liquid outlet of leachate pipeline 6 is located higher horizontal plane above rubbish pond 4.
Alternatively, the inclination angle α of the bottom surface of the waste receptacle 4 is 5 ° or 10 °, and the inclination angle β of the plane enclosed by the upper port of the waste receptacle 4 is 15 ° or 23 °.
Furthermore, 2 leachate discharge ports are formed in the bottom of the garbage pool 4, each leachate discharge port is connected with a leachate collecting pool 5 through a leachate pipeline 6, and the 2 leachate collecting pools 5 are communicated through pipelines.
Further, the sewage pipeline 3 connected with the second port of the surface type heat exchanger 2 is communicated with the sewage pipeline 3 connected with the first port of the surface type heat exchanger 2 through a side branch return pipeline 9, and a stop valve, a regulating valve and a booster pump are installed in the side branch return pipeline 9.
Furthermore, install the level gauge in the leachate collecting pit 5, stop valve, governing valve are installed to sewage pipes 3 between 2, the leachate collecting pit 5 of surface heat exchanger, and open whole heating system after the level gauge records that the leachate in leachate collecting pit 5 reaches certain liquid level height, the energy is saved.
The temperature sensor and the liquid level meter are connected with the PLC and transmit the sensing information to the PLC, and the PLC controls the opening state of the corresponding stop valve and the corresponding regulating valve.
The system for heating the garbage pool by utilizing the waste heat carries out heating treatment on the hot water in the garbage pool by utilizing the waste heat of the originally wasted sewage, so that the domestic garbage is fully fermented to increase the heat value, the generated energy of a power plant is improved, the fully fermented domestic garbage is more fully combusted, and less harmful gas is discharged; on the other hand, the exchange cold water required by sewage discharge is saved; moreover, the fermented garbage absorbs more leachate, and the leachate treatment cost is greatly reduced.
Specific embodiment example 2:
a system for heating a waste reservoir using waste heat, comprising: a sewage discharge flash tank 1, a surface type heat exchanger 2, a sewage discharge pipeline 3, a garbage pool 4, a leachate collecting pool 5, a leachate pipeline 6, a leachate pressure pump 7, wherein the sewage generated by an incineration boiler and a steam turbine in the power plant is introduced into a sewage flash tank 1 for flash-up and pressure reduction, the sewage flash tank 1 is connected with a first port of a surface type heat exchanger 2 through a sewage pipeline 3, a second port of the surface type heat exchanger 2 is connected with the sewage pipeline 3 for discharging the sewage after heat exchange, the bottom of a garbage pool 4 is provided with a leachate discharge port, the leachate discharge port is provided with a leachate pipeline 6 leading to a leachate collecting tank 5 to introduce leachate from the garbage tank 4 into the leachate collecting tank 5, a leachate collecting pool 5 and a second port of the surface heat exchanger 2 are communicated by a leachate pipeline 6, and a leachate outlet end of the leachate pipeline 6 connected with the first port of the surface heat exchanger 2 is positioned at the upper part of the inlet end of the garbage pool 5; a leachate pipeline 6 between the leachate collecting pool 5 and the surface heat exchanger 2 is provided with a leachate pressure pump 7 for providing flowing power for leachate; the flow direction of sewage and leachate in the surface heat exchanger 2 is opposite, a heat-insulating layer is arranged outside the room temperature of the leachate pipeline 6, and a spray head is arranged at the liquid outlet end of the leachate pipeline 6 above the upper port of the garbage pool 4.
The plane that the bottom surface of rubbish pond 4, upper port enclose is the inclined plane, the inclined plane inclines towards the direction of leachate discharge port, and the liquid outlet of leachate pipeline 6 is located higher horizontal plane above rubbish pond 4.
Alternatively, the inclination angle α of the bottom surface of the waste receptacle 4 is 7 ° or 15 °, and the inclination angle β of the plane enclosed by the upper port of the waste receptacle 4 is 30 ° or 38 °.
Furthermore, 2 leachate discharge ports are formed in the bottom of the garbage pool 4, each leachate discharge port is connected with a leachate collecting pool 5 through a leachate pipeline 6, and the 2 leachate collecting pools 5 are communicated through pipelines.
Further, in the system for heating the garbage pool by using the waste heat, the sewage discharge pipeline 3 between the sewage discharge flash tank 1 and the surface type heat exchanger 2 is connected with a cooling device 8 through a side branch pipeline, the front end of a water flow pipeline of the cooling device 8 is provided with a temperature sensor 81, and a side branch pipeline is provided with a stop valve and an adjusting valve.
Furthermore, install the level gauge in the leachate collecting pit 5, stop valve, governing valve are installed to sewage pipes 3 between 2, the leachate collecting pit 5 of surface heat exchanger, and open whole heating system after the level gauge records that the leachate in leachate collecting pit 5 reaches certain liquid level height, the energy is saved.
Temperature sensor, level gauge all are connected with the PLC controller, and operating personnel observes the opening state of liquid level height and the corresponding stop valve of temperature display manual control, governing valve through the display panel of PLC controller.
The utility model discloses the system that utilizes the waste heat to heat for the rubbish pond that well relates to is used for external heat supply with boiler blow-down water, has saved exchange cold water when improving waste water utilization, guarantees the double track operation route of the external heat supply of preferred atomizing on the basis of boiler dilatation blowdown normal operating, avoids the direct environmental pollution who discharges the cause of blow off water simultaneously. And secondly, the arrangement of the return pipeline further improves the operation safety of the whole system, and when the related pipeline section and the corresponding valve are in failure, sewage can flow in two directions through the return pipeline to fulfill the aims of capacity expansion, sewage discharge or atomization heat supply.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A system for heating a waste reservoir using waste heat, comprising: blowdown flash vessel, surface formula heat exchanger, sewage pipes, refuse pool, leachate collecting pit, leachate pipeline, leachate force (forcing) pump, its characterized in that: the method comprises the following steps that sewage generated by an incineration boiler and a steam turbine in the power plant is introduced into a sewage discharge flash tank for capacity expansion and pressure reduction, the sewage discharge flash tank is connected with a first port of a surface heat exchanger through a sewage discharge pipeline, a second port of the surface heat exchanger is connected with a sewage discharge pipeline for discharging the sewage after heat exchange, the bottom of a garbage pool is provided with a leachate discharge port, the leachate discharge port is provided with a leachate pipeline leading to a leachate collecting pool and leading leachate into the leachate collecting pool from the garbage pool, one section of leachate pipeline is communicated with the leachate collecting pool and the second port of the surface heat exchanger, and the outlet end of the leachate pipeline connected with the first port of the surface heat exchanger is positioned at the upper part of the inlet end of the garbage pool; a leachate pipeline between the leachate collecting pool and the surface heat exchanger is provided with a leachate pressure pump for providing flowing power for leachate; wherein, the flowing direction of the sewage and the leachate in the surface heat exchanger is opposite, and the outside of the leachate pipeline at room temperature is provided with a heat-insulating layer.
2. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: the bottom surface of the garbage pool is an inclined surface which inclines towards the direction of the leachate discharge port.
3. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: the plane that the last port of rubbish pond encloses is the inclined plane, and the liquid outlet of the leachate pipeline of rubbish pond top is located higher horizontal plane department.
4. The system for heating the garbage pool by using the waste heat as claimed in claim 2, wherein the inclination angle α of the bottom surface of the garbage pool is 5-17 °, and the inclination angle β of the plane enclosed by the upper port of the garbage pool is 15-40 °.
5. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: a spray head is arranged at the liquid outlet end of the leachate pipeline above the upper port of the garbage pool.
6. A system for heating a waste reservoir using waste heat as claimed in any one of claims 2 or 3, wherein: the inclined direction of the upper port plane of the garbage pool is opposite to the inclined direction of the bottom surface.
7. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: a plurality of leachate discharge ports are formed in the bottom of the garbage pool, each leachate discharge port is connected with a leachate collecting pool through a leachate pipeline, and the leachate collecting pools are communicated through pipelines.
8. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: the blowdown pipeline between blowdown flash vessel and the surface type heat exchanger is connected with cooling device through the collateral branch pipeline, and temperature sensor is installed to cooling device's rivers pipeline front end, is provided with stop valve, governing valve on the collateral branch pipeline.
9. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: the sewage pipeline connected with the second port of the surface heat exchanger is communicated with the sewage pipeline connected with the first port of the surface heat exchanger through a side branch return pipeline, and a stop valve, an adjusting valve and a booster pump are installed in the side branch return pipeline.
10. The system for heating a garbage pool by using waste heat as claimed in claim 1, wherein: install the level gauge in the leachate collecting pit, the sewage pipes between surface heat exchanger, leachate collecting pit installs stop valve, governing valve, measures when the level gauge and opens whole heating system after the leachate in the leachate collecting pit reaches certain liquid level height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920897148.8U CN210832019U (en) | 2019-06-14 | 2019-06-14 | System for heating garbage pool by using waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920897148.8U CN210832019U (en) | 2019-06-14 | 2019-06-14 | System for heating garbage pool by using waste heat |
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| Publication Number | Publication Date |
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| CN210832019U true CN210832019U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920897148.8U Expired - Fee Related CN210832019U (en) | 2019-06-14 | 2019-06-14 | System for heating garbage pool by using waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375145A (en) * | 2021-07-15 | 2021-09-10 | 国能龙源电力技术工程有限责任公司 | Garbage pool heat supply system for garbage incineration power plant |
-
2019
- 2019-06-14 CN CN201920897148.8U patent/CN210832019U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375145A (en) * | 2021-07-15 | 2021-09-10 | 国能龙源电力技术工程有限责任公司 | Garbage pool heat supply system for garbage incineration power plant |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200623 |
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| CF01 | Termination of patent right due to non-payment of annual fee |