CN216738202U - Dry quenching heat-storage peak regulation system - Google Patents
Dry quenching heat-storage peak regulation system Download PDFInfo
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- CN216738202U CN216738202U CN202220222847.4U CN202220222847U CN216738202U CN 216738202 U CN216738202 U CN 216738202U CN 202220222847 U CN202220222847 U CN 202220222847U CN 216738202 U CN216738202 U CN 216738202U
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Abstract
The utility model discloses a coke dry quenching heat storage and peak regulation system which comprises a coke dry quenching system, wherein the coke dry quenching system comprises a coke dry quenching furnace, an air outlet of the coke dry quenching furnace is connected to an air inlet of a coke dry quenching waste heat boiler through a circulating heat pipeline, and an air outlet of the coke dry quenching waste heat boiler is connected to an air inlet of the coke dry quenching furnace through a circulating cold pipeline; the coke dry quenching system also comprises a heat storage device, and the heat storage device is communicated with the coke dry quenching system; according to the utility model, the heat storage device is connected into the coke dry quenching system, heat is stored for the heat storage device in the flat valley electricity price period, and heat is released through the heat storage device in the peak electricity price period, so that the electric quantity in the flat valley electricity price period is utilized in the peak electricity price period, the operation cost of the coke dry quenching system can be reduced, and the investment recovery period of the coke dry quenching system is shortened.
Description
Technical Field
The utility model belongs to the technical field of dry quenching energy utilization, and particularly relates to a dry quenching heat storage and peak regulation system.
Background
At present, haze weather frequently appears in each big city, so that people pay more attention to energy and environmental problems, and in the face of the severe situation of the energy and environmental problems, energy conservation, emission reduction and environmental protection are imperative. Coke is a main raw material and fuel in the aspects of metallurgy, chemical industry and machinery, and is an indispensable substance in human life. The high-temperature coke for coking has two processing methods, one is a wet quenching technology, and the other is a dry quenching technology. In the wet quenching process, poisonous gases such as phenol, cyanide, sulfide, ammonia and the like can be generated, a large amount of heat energy is lost, and serious problems such as dust pollution and the like are caused while steam volatilizes. The dry quenching technology is one of important items for energy conservation and emission reduction, and compared with the traditional wet quenching technology, the dry quenching technology has the advantages of energy conservation, coke quality improvement, environmental protection and the like.
The dry quenching process mainly uses inert gas as a cold source to cool hot coke, and has important energy-saving and environment-friendly significance compared with a wet quenching process. However, the dry quenching process has high investment and the problem of long investment recovery period still exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a coke dry quenching heat storage peak regulation system to reduce the operation cost of the coke dry quenching system.
The utility model adopts the following technical scheme: a coke dry quenching heat storage peak regulation system comprises a coke dry quenching system, wherein the coke dry quenching system comprises a coke dry quenching furnace, an air outlet of the coke dry quenching furnace is connected to an air inlet of a coke dry quenching waste heat boiler through a circulating heat pipeline, and an air outlet of the coke dry quenching waste heat boiler is connected to an air inlet of the coke dry quenching furnace through a circulating cold pipeline;
the coke dry quenching system also comprises a heat storage device, and the heat storage device is communicated with the coke dry quenching system;
wherein, the heat-retaining device is used for: heat is stored by the dry quenching system during the flat valley electricity price period, and heat is released to the dry quenching system during the peak electricity price period.
Furthermore, a primary dust remover is arranged on the circulating heat pipeline, and a first regulating valve is arranged between the primary dust remover and the dry quenching waste heat boiler.
Furthermore, a secondary dust remover and a circulating fan are sequentially arranged on the circulating cold pipeline from the air outlet of the dry quenching waste heat boiler to the air inlet of the dry quenching furnace.
Further, an air inlet and an air outlet of the heat storage device are communicated to a circulating heat pipeline between the primary dust remover and the first regulating valve through an air inlet and outlet pipeline.
Furthermore, a first valve is arranged on the air inlet and outlet pipeline.
Further, an air outlet of the heat storage device is communicated to a circulating cold pipeline between the secondary dust remover and the dry quenching waste heat boiler through an air outlet pipeline.
Further, an air inlet of the heat storage device is connected to a circulating cold pipeline between the circulating fan and the dry quenching furnace through an air inlet pipeline.
Furthermore, the dry quenching waste heat boiler is also connected with a steam turbine, and the steam turbine is connected with a generator.
The utility model has the beneficial effects that: according to the utility model, the heat storage device is connected into the coke dry quenching system, the heat storage device stores heat in the flat valley electricity price period, and the heat storage device releases heat in the peak electricity price period, so that the electric quantity in the flat valley electricity price period is utilized in the peak electricity price period, the operation cost of the coke dry quenching system can be reduced, and the investment recovery period of the coke dry quenching system is shortened.
Drawings
Fig. 1 is a schematic structural diagram of a coke dry quenching heat storage peak shaving system according to an embodiment of the utility model.
Wherein: 1. a coke inlet; 2. dry quenching; 3. a coke outlet; 4. a primary dust remover; 5. a first regulating valve; 6. a dry quenching waste heat boiler; 7. a steam turbine; 8. a generator; 9. a secondary dust remover; 10. a circulating fan; 11. a heat storage device; 12. a first valve; 13. a third valve; 14. a second valve; 15. a steam line; 16. a second regulator valve.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model discloses a coke dry quenching heat storage peak regulation system, which comprises a coke dry quenching system, wherein the coke dry quenching system comprises a coke dry quenching furnace 2, an air outlet of the coke dry quenching furnace 2 is connected to an air inlet of a coke dry quenching waste heat boiler 6 through a circulating heat pipeline, and an air outlet of the coke dry quenching waste heat boiler 6 is connected to an air inlet of the coke dry quenching furnace 2 through a circulating cold pipeline; the coke dry quenching system also comprises a heat storage device 11, wherein the heat storage device 11 is communicated with the coke dry quenching system; wherein, heat-retaining device 11 is used for: heat is stored by the dry quenching system during the flat valley electricity price period, and heat is released to the dry quenching system during the peak electricity price period.
According to the utility model, the heat storage device is connected into the coke dry quenching system, the heat storage device 11 stores heat in the flat valley electricity price period, and the heat is released through the heat storage device 11 in the peak electricity price period, so that the electric quantity in the flat valley electricity price period is utilized in the peak electricity price period, the operation cost of the coke dry quenching system can be reduced, and the investment recovery period of the coke dry quenching system is shortened.
In the present embodiment, the dry quenching furnace 2 includes a pre-storage chamber, a cooling section, a flat plate valve, an electromagnetic oscillation feeder, a rotary seal valve, and a bifurcated chute. The hot coke enters a dry quenching furnace 2 through a coke inlet 1, exchanges heat with inert gas in a cooling section, is cooled to below 200 ℃, and is discharged through a flat gate (namely a coke outlet 3), an electromagnetic vibration feeder, a rotary sealing valve and a double-fork chute to become cold coke.
In one embodiment, a primary dust collector 4 is arranged on the circulating heat pipeline, and a first regulating valve 5 is arranged between the primary dust collector 4 and a dry quenching waste heat boiler 6. Coarse-particle coke powder in the high-temperature inert gas can be separated through the primary dust remover 4, so that the purity of the high-temperature inert gas is kept, and the coke powder is prevented from damaging pipelines and equipment. The flow rate of the inert gas can be controlled by the opening degree of the first regulating valve 5. Specifically, the first regulating valve may be a pneumatic regulating valve, an electric regulating valve, or the like.
Through dry quenching exhaust-heat boiler 6, can retrieve high temperature inert gas's waste heat, and then with steam heating, send high temperature steam into steam turbine 7 again, steam turbine 7 connects generator 8, supplies the garden to use through high temperature steam power generation, and steam supplies other positions that need to use through steam conduit 15 in addition. On the other hand, the dry quenching exhaust-heat boiler 6 cools the high-temperature inert gas to about 160 ℃, and then sends the high-temperature inert gas into the secondary dust remover 9.
In one embodiment of the utility model, a secondary dust remover 9 and a circulating fan 10 are sequentially arranged on the circulating cold pipeline from the air outlet of the dry quenching waste heat boiler 6 to the air inlet of the dry quenching furnace 2. The secondary dust remover 9 mainly separates fine granular coke powder in the inert gas to ensure the purity of the inert gas in the dry quenching system. The circulator 10 mainly provides power for high-temperature inert gas in the system to ensure the normal circulation of the high-temperature inert gas in the system. Specifically, the circulating fan 10 sends the circulating inert gas in the pipeline into the heat exchanger to be cooled to 130 ℃, then the circulating inert gas enters the upper gas chamber and the lower gas chamber of the dry quenching furnace 2 to exchange heat with hot coke, and the hot coke is discharged out of the dry quenching furnace 2 after heat exchange.
In the present invention, the heat storage device 11 may be either a solid heat storage device or a phase change heat storage device. Specifically, the heat storage device 11 has an air inlet and an air outlet, and the air inlet and the air outlet can be used as an air inlet of the heat storage device 11 and an air outlet of the heat storage device 11. In addition, the heat storage device 11 also has a separate air inlet and a separate air outlet.
Specifically, the air inlet and outlet are communicated to a circulating heat pipeline between the primary dust remover 4 and the first regulating valve 5 through an air inlet and outlet pipeline. The air outlet is communicated to a circulating cold pipeline between the secondary dust remover 9 and the dry quenching waste heat boiler 6 through an air outlet pipeline. The air inlet is connected to a circulating cold pipeline between the circulating fan 10 and the dry quenching furnace 2 through an air inlet pipeline. Through such a design, two sets of inlet and outlet air paths are formed on the heat storage device 11, so that switching can be performed in different working modes.
More specifically, a first valve 12 is arranged on the air inlet and outlet pipeline, a third valve 13 is arranged on the air inlet pipe, a second valve 14 is arranged on the air outlet pipe, and a second regulating valve 16 is additionally arranged at the inert gas inlet of the circulating cold pipeline close to the dry quenching furnace 2. The different modes of operation of embodiments of the present invention are achieved by appropriate adjustment of the opening and closing of the various valves.
The working process of the utility model is as follows:
in the flat valley electricity price period:
because the electricity price is low in the period, a part of power grid can be used for supplying power, and on the premise of ensuring the normal state of the waste heat boiler, a part of heat storage is carried out on the waste heat of the dry quenching process, so that the power generation system of the waste heat boiler is ensured to be normal. Therefore, the first valve 12 and the second valve 14 are opened, the third valve 13 is closed, and the heat storage device 11 is charged. In the mode, low-temperature inert gas is sent into the dry quenching furnace 2 from the circulating fan 10 to exchange heat with hot coke, the high-temperature inert gas is separated from coarse-particle coke powder in the inert gas through the primary dust remover 4, one path of inert gas flows into the heat storage device 11 through the air inlet and outlet pipelines to be charged with heat, and the inert gas after heat exchange is subjected to one cycle through the air outlet pipeline, the secondary dust remover 9 and the circulating fan 10; the trough electrovalence can reduce or close first governing valve 5 for reducing the generated energy, reduces the generated energy, and the station area also can be followed municipal power grid and inserted the use when the power shortage.
During the peak electricity price period:
because the electricity price is high in the period, the power supply by a power grid can be reduced, the waste heat of the coke dry quenching process is completely generated, and meanwhile, the heat supply is increased by the heat storage device 11, so that the power supply quantity of the system is increased, and the use quantity of the power grid electricity is reduced. Therefore, the first valve 12 and the third valve 13 are opened, the second valve 14 is closed, and the opening degree of the second regulating valve 16 is decreased, whereby heat is released from the heat storage device 11. In the mode, low-temperature inert gas is sent into the dry quenching furnace 2 from the circulating fan 10 to exchange heat with hot coke, the high-temperature inert gas passes through the primary dust remover 4 to separate coarse-particle coke powder in the inert gas, the flue gas passes through the first regulating valve 5, at the moment, the first regulating valve 5 is in a fully-opened state, then the flue gas passes through the dry quenching waste heat boiler 6 to exchange heat 6 in the dry quenching waste heat boiler, and the flue gas passes through the secondary dust remover 9 after the heat exchange is completed and is finally taken away from the circulating fan 10 to complete the circulation. In addition, because the opening degree of the second regulating valve 16 is reduced, part of the inert gas at the outlet of the circulating fan 10 is sent into the heat storage device 11 after heat filling is completed, passes through the air inlet pipe, then passes through the heat storage device 11 for heat exchange and temperature rise, then passes through the air inlet and outlet pipeline, passes through the first regulating valve 5, and finally flows into the dry quenching waste heat boiler 6 for heat exchange, the heat exchange quantity of the dry quenching waste heat boiler is increased, the generated energy is inevitably increased, and municipal electricity purchasing can be reduced during wave crest, so that the electricity cost is saved.
In conclusion, the system carries out heat charging of the heat storage device 11 in the valley-leveling electricity price period, reduces the power generation of the dry quenching waste heat boiler 6, and can be accessed from a municipal power grid for use in a plant area when the power is insufficient. When the heat release of the heat storage device 11 is carried out in the peak electricity price period, the heat exchange quantity of the dry quenching waste heat boiler 6 is increased, and the generated energy is inevitably increased. The method solves the problems of peak clipping and valley filling in the coking industry, reasonably distributes the electricity utilization condition, reduces the electricity waste, promotes the energy saving and environmental protection, and shortens the investment recovery period of the dry quenching system.
Claims (8)
1. The coke dry quenching heat storage and peak regulation system is characterized by comprising a coke dry quenching system, wherein the coke dry quenching system comprises a coke dry quenching furnace (2), an air outlet of the coke dry quenching furnace (2) is connected to an air inlet of a coke dry quenching waste heat boiler (6) through a circulating heat pipeline, and an air outlet of the coke dry quenching waste heat boiler (6) is connected to the air inlet of the coke dry quenching furnace (2) through a circulating cold pipeline;
the coke dry quenching system also comprises a heat storage device (11), wherein the heat storage device (11) is communicated with the coke dry quenching system;
wherein the heat storage device (11) is used for: storing heat by the coke dry quenching system during a flat valley tariff period and releasing heat to the coke dry quenching system during a peak tariff period.
2. The dry quenching heat storage peak shaving system as claimed in claim 1, characterized in that a primary dust collector (4) is mounted on the circulating heat pipeline, and a first regulating valve (5) is mounted between the primary dust collector (4) and the dry quenching waste heat boiler (6).
3. The dry quenching heat storage peak shaving system as claimed in claim 2, characterized in that a secondary dust remover (9) and a circulating fan (10) are sequentially arranged on the circulating cold pipeline from the air outlet of the dry quenching exhaust-heat boiler (6) to the air inlet of the dry quenching furnace (2).
4. The dry quenching heat storage peak shaving system as claimed in claim 2 or 3, characterized in that the air inlet and outlet of the heat storage device (11) are connected to the circulating heat pipeline between the primary dust collector (4) and the first regulating valve (5) through an air inlet and outlet pipeline.
5. The dry quenching heat storage peak shaving system as claimed in claim 4, wherein the air inlet and outlet duct is provided with a first valve (12).
6. The dry quenching heat storage and peak shaving system as claimed in claim 3, characterized in that the air outlet of the heat storage device (11) is connected to the circulating cold pipeline between the secondary dust collector (9) and the dry quenching exhaust-heat boiler (6) through an air outlet pipeline.
7. The dry quenching heat storage peak shaving system as claimed in claim 3, characterized in that the air inlet of the heat storage device (11) is connected to the circulating cold pipeline between the circulating fan (10) and the dry quenching furnace (2) through an air inlet pipeline.
8. The dry quenching heat storage peak shaving system as claimed in claim 7, characterized in that the dry quenching exhaust-heat boiler (6) is further connected with a steam turbine (7), and the steam turbine (7) is connected with a generator (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220222847.4U CN216738202U (en) | 2022-01-27 | 2022-01-27 | Dry quenching heat-storage peak regulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220222847.4U CN216738202U (en) | 2022-01-27 | 2022-01-27 | Dry quenching heat-storage peak regulation system |
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| Publication Number | Publication Date |
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| CN216738202U true CN216738202U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220222847.4U Active CN216738202U (en) | 2022-01-27 | 2022-01-27 | Dry quenching heat-storage peak regulation system |
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- 2022-01-27 CN CN202220222847.4U patent/CN216738202U/en active Active
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