CN217979790U - AOD furnace and submerged arc furnace combined power generation system - Google Patents
AOD furnace and submerged arc furnace combined power generation system Download PDFInfo
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- CN217979790U CN217979790U CN202221817987.2U CN202221817987U CN217979790U CN 217979790 U CN217979790 U CN 217979790U CN 202221817987 U CN202221817987 U CN 202221817987U CN 217979790 U CN217979790 U CN 217979790U
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Abstract
The utility model discloses a combined power generation system of an AOD furnace and a submerged arc furnace, which comprises an AOD furnace smoke exhaust system, a submerged arc furnace smoke exhaust system and a power generation system; the input end of the power generation system is communicated with the other output end of the waste heat boiler through a third air pipeline, and a first temperature sensor and a speed control box are sequentially arranged on the second air pipeline. Set gradually first temperature sensor and speed control case on through the second trachea way, and cooperate the water valve setting on first water pipeling and control the flow of first water pipeling, make in waste heat recovery power generation process, can control the steam volume that gets into power generation facility through the speed control case, and come the temperature of real-time response vapor through first temperature sensor, the volume that the first water pipeling of control gets into the vaporization flue, avoid producing the temperature of flue gas because of the AOD stove inadequately, can't lead to the vaporization flue temperature to reduce with feedwater complete vaporization, thereby influence power generation facility's operating condition, the power generation effect has effectively been improved.
Description
Technical Field
The utility model relates to a waste heat recovery power generation field technique especially indicates an AOD stove and hot stove in ore deposit cogeneration system.
Background
The steel industry is an important basic raw material industry of national economy and is also a high-energy-consumption and high-pollution industry. The steel industry consumes a great amount of energy every year, and under the condition of energy shortage in the current society, the reasonable utilization and the environmental protection of the energy need to be paid special attention, so that the reduction of the energy consumption and the reduction of the environmental pollution are the development direction of the steel industry. The production process with low energy consumption and small environmental pollution can not only improve the economic benefits of enterprises, but also increase the social benefits, and is a first opportunity for iron and steel enterprises in competition. The steel industry has great potential for energy conservation. Therefore, the improvement technology of large-scale enterprises at home and abroad is developed, the flue gas waste heat recovery system is utilized to save energy, reduce consumption and comprehensively utilize energy, and how to fully utilize waste heat resources is an important means and way for promoting the recycling economy of the ferrous metallurgy industry, realizing energy conservation and emission reduction, reducing production cost and improving market competitiveness.
In order to improve the utilization rate of heat energy, a set of waste heat recovery system is selected to be adopted by matching the AOD furnace and the submerged arc furnace, and the heat energy is converted into electric energy through a power generation system, but in the existing matched power generation system, the amount of water vapor is unstable due to unstable heat provided by the AOD furnace and the submerged arc furnace, so that the generated energy is difficult to continuously output with constant power, and the power generation effect is influenced; therefore, there is a need for further improvements to existing waste heat recovery power generation systems.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides an AOD stove and hot stove combined power generation system in ore deposit, and it can effectively solve current waste heat power generation system steam volume unstability and the poor problem of power generation effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a combined power generation system of an AOD furnace and a submerged arc furnace comprises an AOD furnace smoke exhaust system, a submerged arc furnace smoke exhaust system and a power generation system; the AOD furnace smoke discharging system comprises an AOD furnace, a vaporization flue, a first dust remover, a first steam drum and a water valve; the input end of the vaporization flue is communicated with the output end of the AOD furnace; the input end of the dust remover is communicated with the output end of the vaporization flue; the first steam pocket is respectively communicated with the input end and the output end of the vaporization flue through a first water pipeline and a first air pipeline, and the water valve is arranged on the first water pipeline and controls the flow of the first water pipeline; the submerged arc furnace smoke exhaust system comprises a submerged arc furnace, a high-temperature outlet pipe, a separator, a waste heat boiler, a second dust remover and a second steam drum; the input end of the high-temperature outlet pipe is communicated with the output end of the submerged arc furnace; the input end of the separator is communicated with the output end of the high-temperature outlet pipe; one input end of the waste heat boiler is communicated with the output end of the separator, the output end of the second steam pocket is communicated with the other input end of the waste heat boiler, and the input end of the second steam pocket is communicated with the output end of the first steam pocket through a second air pipeline; the input end of the second dust remover is communicated with one output end of the waste heat boiler; the input end of the power generation system is communicated with the other output end of the waste heat boiler through a third air pipeline, a first temperature sensor and a speed control box are sequentially arranged on a second air pipeline, and the output end of the power generation system is communicated with the first steam pocket through a second water pipeline.
As a preferred scheme, the AOD furnace smoke discharging system further includes a first fan and a first chimney, an input end of the first fan is communicated with an output end of the first dust remover, and an input end of the first chimney is communicated with an output end of the first fan.
Preferably, a second temperature sensor is arranged on the second air pipeline.
As a preferable scheme, the submerged arc furnace smoke exhaust system further comprises a second fan and a second chimney, wherein the input end of the second fan is communicated with the output end of the second dust remover, and the input end of the second chimney is communicated with the output end of the second fan.
As a preferred scheme, the power generation system comprises a steam turbine, a generator, a condenser, a cooling tower, a deaerator and a first water pump; the input end of the steam turbine is communicated with the other output end of the waste heat boiler, and the generator is connected with the steam turbine; the input end of the condenser is communicated with the output end of the steam turbine; the cooling tower is provided with a third water pipeline and a second water pump, the third water pipeline is respectively communicated with the output end and the input end of the cooling tower and extends into the condenser, and the second water pump is arranged in the third water pipeline; the input end of the deaerator is communicated with the output end of the condenser, and the output end of the deaerator is communicated with the first steam pocket through a second water pipeline; the first water pump is arranged in the second water pipeline.
As a preferable scheme, a third water pump is arranged between the deaerator and the condenser.
As a preferred scheme, a rotary kiln is arranged between the waste heat boiler and the second dust remover, the input end of the rotary kiln is communicated with one output end of the waste heat boiler, and the input end of the second dust remover is communicated with the output end of the rotary kiln.
As a preferable scheme, the first dust remover and the second dust remover are both bag-type dust removers.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:
set gradually first temperature sensor and speed control case through on the second trachea way, and cooperate the water valve setting on first trachea way and control the flow of first trachea way, make in waste heat recovery power generation process, can control the steam volume that gets into power generation facility through the speed control case, make steam get into power generation facility with a invariable volume, and come the temperature of real-time response steam through first temperature sensor, and through the temperature of response steam, control the volume that first trachea way feedwater got into the vaporization flue, avoid producing the temperature of flue gas because of the AOD stove inadequately, can't lead to the vaporization flue temperature to reduce with the complete vaporization of feedwater, and cause the influence to the steam quality, thereby influence power generation facility's operating condition, effectively improved the generating effect.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a flowchart illustrating the operation of the preferred embodiment of the present invention.
The attached drawings indicate the following:
10. AOD fire smoke discharging system 11 and AOD furnace
12. Vaporization flue 13 and first dust remover
14. First steam drum 141 and first water pipeline
142. First gas pipeline 15 and water valve
16. First fan 17 and first chimney
20. Submerged arc furnace smoke exhaust system 21 and submerged arc furnace
22. High temperature outlet pipe 23, separator
24. Exhaust-heat boiler 25, second dust remover
26. Second steam pocket 261 and second gas pipeline
262. Second temperature sensor 27, second fan
28. Second chimney 29, rotary kiln
30. Power generation system 301 and secondary water pipeline
31. Third gas pipe 32, first temperature sensor
33. Speed control box 34 and steam turbine
35. Generator 36 and condenser
37. Cooling tower 371, third water pipeline
372. Second water pump 38, deaerator
381. A third water pump 39 and a first water pump.
Detailed Description
Referring to fig. 1, a specific structure of a preferred embodiment of the present invention is shown, which includes an AOD furnace fume exhausting system 10, a submerged arc furnace fume exhausting system 20 and a power generating system 30.
The AOD furnace smoke discharging system 10 comprises an AOD furnace 11, a vaporization flue 12, a first dust remover 13, a first steam drum 14 and a water valve 15; the input end of the vaporization flue 12 is communicated with the output end of the AOD furnace 11; the input end of the dust remover 13 is communicated with the output end of the vaporization flue 12; the first steam drum 14 is respectively communicated with the input end and the output end of the vaporization flue 12 through a first water pipeline 141 and a first air pipeline 142, the water valve 15 is arranged on the first water pipeline 141 and controls the flow of the first water pipeline 141; in this embodiment, the AOD fire smoke discharging system 10 further includes a first fan 16 and a first chimney 17, an input end of the first fan 16 is communicated with an output end of the first dust remover 13, and an input end of the first chimney 17 is communicated with an output end of the first fan 16; the first dust remover 13 is a bag-type dust remover.
The submerged arc furnace smoke exhaust system 20 comprises a submerged arc furnace 21, a high-temperature outlet pipe 22, a separator 23, a waste heat boiler 24, a second dust remover 25 and a second steam drum 26; the input end of the high-temperature outlet pipe 22 is communicated with the output end of the submerged arc furnace 21; the input end of the separator 23 is communicated with the output end of the high-temperature outlet pipe 22; one input end of the waste heat boiler 24 is communicated with the output end of the separator 23, the output end of the second steam drum 26 is communicated with the other input end of the waste heat boiler 24, and the input end of the second steam drum 26 is communicated with the output end of the first steam drum 14 through a second air pipeline 261; the input end of the second dust remover 25 is communicated with one output end of the waste heat boiler 24; in this embodiment, a second temperature sensor 262 is disposed on the second air pipe 261, and the second temperature sensor 262 is used for sensing the temperature of the water vapor in the second air pipe 261; the submerged arc furnace smoke exhaust system 20 further comprises a second fan 27 and a second chimney 28, wherein the input end of the second fan 27 is communicated with the output end of the second dust remover 25, and the input end of the second chimney 28 is communicated with the output end of the second fan 27; a rotary kiln 29 is arranged between the waste heat boiler 24 and the second dust remover 25, the input end of the rotary kiln 29 is communicated with one output end of the waste heat boiler 24, and the input end of the second dust remover 25 is communicated with the output end of the rotary kiln 29; the second dust collector 25 is a bag-type dust collector.
The input end of the power generation system 30 is communicated with the other output end of the waste heat boiler 24 through a third air pipeline 31, the third air pipeline 31 is sequentially provided with a first temperature sensor 32 and a speed control box 33, the first temperature sensor 32 is used for sensing the temperature of the water vapor in the third air pipeline 31, adjusting the water valve 15 according to the temperature of the water vapor, and controlling the water flow in the first water pipeline 141; the speed control box 33 is used for controlling the amount of water vapor entering the power generation system, so that the water vapor always enters the power generation system at a constant speed, the power generation effect can be improved, and devices in the power generation system can be protected; the output end of the power generation system 30 is communicated with the first steam pocket 14 through a second water pipeline 301; in this embodiment, the power generation system 30 includes a steam turbine 34, a generator 35, a condenser 36, a cooling tower 37, a deaerator 38, and a first water pump 39; the input end of the steam turbine 34 is communicated with the other output end of the waste heat boiler 24, and the generator 35 is connected with the steam turbine 34; the input end of the condenser 36 is communicated with the output end of the steam turbine 34; the cooling tower 37 is provided with a third water pipeline 371 and a second water pump 372, the third water pipeline 371 is respectively communicated with the output end and the input end of the cooling tower 37 and extends into the condenser 36, and the second water pump 372 is arranged in the third water pipeline 371; the input end of the deaerator 38 is communicated with the output end of the condenser 36, and the output end of the deaerator 38 is communicated with the first steam pocket 14 through a second water pipeline 301; the first water pump 39 is provided in the second water pipe 301; a third water pump 381 is arranged between the deaerator 38 and the condenser 36.
Detailed description the working principle of the present embodiment is as follows:
during operation, the hot gas generated by the AOD furnace in the AOD smoke exhaust system 10 enters the vaporization flue 12, at this time, the feed water in the first steam drum 14 enters the vaporization flue 12 through the first water pipeline 141 for heat absorption and evaporation, and the steam generated after evaporation enters the first steam drum 14 through the first air pipeline 142 and enters the waste heat boiler 24 through the second steam drum 26; meanwhile, high-heat gas generated by the submerged arc furnace 21 in the submerged arc furnace smoke exhaust system 20 enters the waste heat boiler 24 through the high-temperature outlet pipe 22 and further heats the steam output by the second steam drum 26, so that the temperature and the pressure of the steam are increased, the further heated steam enters the power generation system through the third air pipeline 31, meanwhile, the first temperature sensor 32 senses and judges the temperature of the steam, if the temperature of the steam is insufficient, the water flow entering the vaporization flue 12 in the first water pipeline 141 is reduced through the water valve 15, if the temperature exceeds a specified standard, the water flow is increased, and meanwhile, the speed control box 33 maintains the speed of the steam entering the power generation system 30 at a fixed value.
The steam that gets into power generation system 30 will advance in steam turbine 34 and drive steam turbine 34 and rotate to drive generator 35 electricity generation, the steam that steam turbine 34 exported will get into condenser 36 and through the cooperation of cooling tower 37 with remaining steam condensation for the feedwater, then the feedwater will be through the deaerator deoxidization, finally through the first steam pocket 14 of the second water pipeline 301 backward flow of the drive of first water pump 39.
The utility model discloses a design focus lies in: set gradually first temperature sensor and speed control case through on the second trachea way, and cooperate the water valve setting on first trachea way and control the flow of first trachea way, make in waste heat recovery power generation process, can control the steam volume that gets into power generation facility through the speed control case, make steam get into power generation facility with a invariable volume, and come the temperature of real-time response steam through first temperature sensor, and through the temperature of response steam, control the volume that first trachea way feedwater got into the vaporization flue, avoid producing the temperature of flue gas because of the AOD stove inadequately, can't lead to the vaporization flue temperature to reduce with the complete vaporization of feedwater, and cause the influence to the steam quality, thereby influence power generation facility's operating condition, effectively improved the generating effect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a hot stove joint power generation system in AOD stove and ore deposit which characterized in that: the system comprises an AOD furnace smoke discharging system, an ore furnace smoke discharging system and a power generating system; the AOD furnace smoke discharging system comprises an AOD furnace, a vaporization flue, a first dust remover, a first steam drum and a water valve; the input end of the vaporization flue is communicated with the output end of the AOD furnace; the input end of the dust remover is communicated with the output end of the vaporization flue; the first steam pocket is respectively communicated with the input end and the output end of the vaporization flue through a first water pipeline and a first air pipeline, and the water valve is arranged on the first water pipeline and controls the flow of the first water pipeline; the submerged arc furnace smoke exhaust system comprises a submerged arc furnace, a high-temperature outlet pipe, a separator, a waste heat boiler, a second dust remover and a second steam drum; the input end of the high-temperature outlet pipe is communicated with the output end of the submerged arc furnace; the input end of the separator is communicated with the output end of the high-temperature outlet pipe; one input end of the waste heat boiler is communicated with the output end of the separator, the output end of the second steam pocket is communicated with the other input end of the waste heat boiler, and the input end of the second steam pocket is communicated with the output end of the first steam pocket through a second air pipeline; the input end of the second dust remover is communicated with one output end of the waste heat boiler; the input end of the power generation system is communicated with the other output end of the waste heat boiler through a third air pipeline, a first temperature sensor and a speed control box are sequentially arranged on a second air pipeline, and the output end of the power generation system is communicated with the first steam pocket through a second water pipeline.
2. The AOD furnace and submerged arc furnace combined power generation system of claim 1, wherein: the AOD furnace smoke discharging system further comprises a first fan and a first chimney, the input end of the first fan is communicated with the output end of the first dust remover, and the input end of the first chimney is communicated with the output end of the first fan.
3. The AOD furnace and submerged arc furnace combined power generation system of claim 1, wherein: and a second temperature sensor is arranged on the second air pipeline.
4. The AOD furnace and submerged arc furnace combined power generation system of claim 1, wherein: the submerged arc furnace smoke exhaust system further comprises a second fan and a second chimney, the input end of the second fan is communicated with the output end of the second dust remover, and the input end of the second chimney is communicated with the output end of the second fan.
5. The AOD furnace and submerged arc furnace combined power generation system of claim 1, wherein: the power generation system comprises a steam turbine, a generator, a condenser, a cooling tower, a deaerator and a first water pump; the input end of the steam turbine is communicated with the other output end of the waste heat boiler, and the generator is connected with the steam turbine; the input end of the condenser is communicated with the output end of the steam turbine; the cooling tower is provided with a third water pipeline and a second water pump, the third water pipeline is respectively communicated with the output end and the input end of the cooling tower and extends into the condenser, and the second water pump is arranged in the third water pipeline; the input end of the deaerator is communicated with the output end of the condenser, and the output end of the deaerator is communicated with the first steam pocket through a second water pipeline; the first water pump is arranged in the second water pipeline.
6. The AOD furnace and submerged arc furnace combined power generation system of claim 5, wherein: and a third water pump is arranged between the deaerator and the condenser.
7. The AOD furnace and submerged arc furnace combined power generation system of claim 1, wherein: and a rotary kiln is arranged between the waste heat boiler and the second dust remover, the input end of the rotary kiln is communicated with one output end of the waste heat boiler, and the input end of the second dust remover is communicated with the output end of the rotary kiln.
8. The AOD furnace and submerged arc furnace combined power generation system of claim 1, wherein: the first dust remover and the second dust remover are both bag-type dust removers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221817987.2U CN217979790U (en) | 2022-07-15 | 2022-07-15 | AOD furnace and submerged arc furnace combined power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221817987.2U CN217979790U (en) | 2022-07-15 | 2022-07-15 | AOD furnace and submerged arc furnace combined power generation system |
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| CN217979790U true CN217979790U (en) | 2022-12-06 |
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| CN202221817987.2U Active CN217979790U (en) | 2022-07-15 | 2022-07-15 | AOD furnace and submerged arc furnace combined power generation system |
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- 2022-07-15 CN CN202221817987.2U patent/CN217979790U/en active Active
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