CN210089420U - AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system - Google Patents
AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system Download PDFInfo
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- CN210089420U CN210089420U CN201920510849.1U CN201920510849U CN210089420U CN 210089420 U CN210089420 U CN 210089420U CN 201920510849 U CN201920510849 U CN 201920510849U CN 210089420 U CN210089420 U CN 210089420U
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- flue gas
- submerged arc
- power generation
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- aod refining
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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
- Y02E20/14—Combined heat and power generation [CHP]
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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
- Y02P10/25—Process efficiency
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model relates to the technical field of waste heat comprehensive utilization in ferrous metallurgy industry, in particular to an AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system, which comprises an AOD refining furnace, a vaporization flue, a steam pocket, a first dust remover, a fan, a chimney, a heat accumulator, a steam turbine, a generator, a condenser, a cooling tower, a circulating water pump, a condensate pump, a deaerator, a water feeding pump, a rotary kiln, a cyclone separator, a high-temperature section outlet pipe, a submerged arc furnace and a superheater, compared with the prior art, the saturated steam in the vaporization flue in the flue gas module of the AOD refining furnace firstly enters the heat accumulator for pressure stabilization and heat accumulation and then enters the superheater for overheating, the superheater utilizes the flue gas waste heat in the flue gas module of the submerged arc furnace to overheat, so that the steam quality is improved, the generated energy is improved, the utilization efficiency of the flue gas waste heat is improved, the product cost is reduced, the environmental pollution is reduced, and the economic benefit and the social benefit of a production enterprise are improved.
Description
Technical Field
The utility model relates to a ferrous metallurgy trade waste heat comprehensive utilization technical field, concretely relates to AOD refining furnace and hot stove flue gas recovery waste heat power generation system in ore deposit.
Background
At present, the existing AOD refining furnace flue gas waste heat recycling technology basically utilizes saturated steam in the prior art technology in China due to the characteristic of large flue gas fluctuation of the AOD refining furnace technology, but the quality grade of the saturated steam is too low, so that the efficiency of the power generation technology is low.
According to the analysis condition of low power generation process efficiency, in order to improve the flue gas waste heat recovery and utilization of the AOD refining furnace in the steel industry and improve the steam quality of waste heat utilization, the power generation efficiency is improved, namely saturated steam generated by a vaporization flue of the AOD refining furnace flue gas waste heat utilization is superheated to generate superheated steam, the steam quality is improved, the work-up capacity is improved, and the flue gas waste heat utilization efficiency is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides an AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system. The purpose is to improve the comprehensive waste heat utilization of the flue gas in the steel industry for steam power generation. The steam quality is improved, the power generation capacity is improved, the utilization efficiency of the waste heat of the flue gas is improved, the energy consumption is reduced, the product cost is reduced, the economic benefit and the competitive advantage of iron and steel production enterprises are improved, the environmental pollution is reduced, and the effects of saving energy and improving the social benefit are achieved.
The purpose of the utility model is realized through the following technical scheme: the application provides an AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system, which comprises an AOD refining furnace flue gas module, a power generation module and a submerged arc furnace flue gas module; the AOD refining furnace flue gas module comprises an AOD refining furnace, a vaporization flue, a steam drum, a first dust remover, a fan and a chimney which are sequentially communicated; the power generation module comprises a steam turbine, a condenser, a condensate pump, a deaerator and a water feed pump which are sequentially communicated, the steam turbine is provided with a power generator, and the water feed pump is connected with a steam drum; the submerged arc furnace flue gas module comprises a submerged arc furnace, a high-temperature section outlet pipe, a cyclone separator, a rotary kiln, a second dust remover, a fan and a chimney which are sequentially communicated; the power generation system also comprises a heat accumulator and a superheater, wherein the inlet of the heat accumulator is communicated with the steam pocket, the outlet of the heat accumulator is communicated with one end of a heat exchange pipeline in the superheater, and the other end of the heat exchange pipeline is communicated with the steam turbine; the superheater is connected between the cyclone separator and the rotary kiln.
Wherein, the condenser is provided with cooling tower and circulating water pump, and inside pipeline, cooling tower and the circulating water pump of condenser form the circulation condensation water route jointly.
Wherein, the water vapor of the vaporization flue and the steam pocket form natural circulation.
The utility model has the advantages that: the utility model provides a AOD refining furnace and hot stove flue gas recovery waste heat power generation system in ore deposit, compared with the prior art, the waste heat power generation system of this application carries out the steady voltage heat accumulation through getting into the heat accumulator earlier to the saturated steam of vaporization flue in the AOD refining furnace flue gas module, it is overheated to get into the over heater again, wherein the over heater utilizes the flue gas waste heat in the hot stove flue gas module in ore deposit to overheat, improve the steam quality, the generated energy is improved, the utilization efficiency of flue gas waste heat is improved, the product cost is reduced, environmental pollution is reduced, the economic benefits and the social of production enterprise are improved.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.
FIG. 1 is a flow chart of a process for refining furnace flue gas by using a front AOD.
FIG. 2 is a flow chart of a process for utilizing forehearth flue gas.
Fig. 3 is a process flow diagram of the structure of the present invention.
Description of the drawings: the system comprises an AOD refining furnace 1, a vaporization flue 2, a steam drum 3, a first dust remover 4, a fan 5, a chimney 6, a steam turbine 7, a generator 8, a condenser 9, a cooling tower 10, a circulating water pump 11, a condensate pump 12, a deaerator 13, a water feed pump 14, a heat accumulator 15, a superheater 16, a submerged arc furnace 17, a high-temperature section outlet pipe 18, a cyclone separator 19, a rotary kiln 20, a second dust remover 21, a fan 22 and a chimney 23.
Detailed Description
The invention will be further described with reference to the following examples.
The utility model discloses a specific implementation of AOD refining furnace and hot stove flue gas recovery waste heat power generation system in ore deposit, as shown in fig. 1 to 3, including AOD refining furnace flue gas module, power module and the hot stove flue gas module in ore deposit.
Please refer to fig. 2, the flue gas module of the AOD refining furnace includes an AOD refining furnace 1, a vaporization flue 2, a steam drum 3, a first dust remover 4, a fan 5 and a chimney 6 which are sequentially communicated. The flue gas generated by the flue gas module of the AOD refining furnace is called flue gas A in the embodiment, the flue gas A generates high-temperature flue gas from the AOD refining furnace 1 and enters the vaporization flue 2, the high-temperature flue gas is utilized by the vaporization flue 2 and then becomes low-temperature flue gas, the low-temperature flue gas enters the first dust remover 4 for dust removal, and the flue gas after dust removal is discharged out of the atmosphere through the chimney 6.
Referring to fig. 3, the submerged arc furnace flue gas module comprises a submerged arc furnace 17, a high-temperature section outlet pipe 18, a cyclone separator 19, a rotary kiln 20, a second dust remover 21, a fan 22 and a chimney 23 which are sequentially communicated; the flue gas generated by the submerged arc furnace flue gas module is referred to as flue gas B in this embodiment, the flue gas B is cooled by the high-temperature section outlet pipe 18 and the cyclone separator 19 from the submerged arc furnace 17, and then enters the rotary kiln 20 and the second dust remover 21 for dust removal, and the flue gas after dust removal is discharged out of the atmosphere through the fan 22 and the chimney 23.
Referring to fig. 1, the power generation module includes a steam turbine 7, a condenser 9, a condensate pump 12, a deaerator 13 and a feed pump 14 which are sequentially communicated, the steam turbine 7 is provided with a generator 8, and the feed pump 14 is connected with the steam drum 3. The condenser 9 is provided with a cooling tower 10 and a circulating water pump 11, and a pipeline inside the condenser 9, the cooling tower 10 and the circulating water pump 11 form a circulating condensation water path together. As an improvement, the power generation system further comprises a heat accumulator 15 and a superheater 16, wherein an inlet of the heat accumulator 15 is communicated with the steam drum 3, an outlet of the heat accumulator 15 is communicated with one end of a heat exchange pipeline in the superheater 16, and the other end of the heat exchange pipeline is communicated with the steam turbine 7. In the working process of the power generation system of the embodiment, feed water enters the steam pocket 3 through the feed water pump 14, then enters the vaporization flue 2 through the steam pocket 3 to form natural circulation, then the generated saturated steam enters the heat accumulator 15 to stabilize pressure and store heat, passes through the heat accumulator 15 and then enters the superheater 16 to be superheated, and the superheated steam enters the steam turbine 7 to rotate and then drives the generator 8 to generate power. The exhaust steam after applying work through the steam turbine 7 enters the condenser 9, cooling water is subjected to circulating exchange cooling between the condenser 9 and the cooling tower 10, flows to the deaerator 13 through the condensate pump 12 after being cooled, and is respectively pumped into the steam pocket 3 through the water feed pump 14 after being deaerated by the deaerator 13, so that the whole closed water circulation system is completed. The superheater is connected between the cyclone separator and the rotary kiln, and waste heat flue gas B generated by the submerged arc furnace enters the superheater for overheating after passing through the cyclone separator, so that the waste heat of the submerged arc furnace is fully utilized.
The AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system of this embodiment, compare with prior art, the waste heat power generation system of this application carries out the steady voltage heat accumulation through getting into heat accumulator 15 earlier to the saturated steam of vaporization flue 2 among the AOD refining furnace flue gas module, reentrant over heater 16 is overheated, wherein over heater 16 utilizes the flue gas waste heat in the submerged arc furnace flue gas module to overheat, improve the steam quality, improve the generated energy, improve flue gas waste heat utilization efficiency, reduce product cost, reduce environmental pollution, improve manufacturing enterprise's economic benefits and social.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. A power generation system by waste heat recovery of AOD refining furnace and submerged arc furnace flue gas comprises an AOD refining furnace flue gas module, a power generation module and a submerged arc furnace flue gas module;
the AOD refining furnace flue gas module comprises an AOD refining furnace, a vaporization flue, a steam drum, a first dust remover, a fan and a chimney which are sequentially communicated;
the power generation module comprises a steam turbine, a condenser, a condensate pump, a deaerator and a water feed pump which are sequentially communicated, the steam turbine is provided with a power generator, and the water feed pump is connected with a steam drum;
the submerged arc furnace flue gas module comprises a submerged arc furnace, a high-temperature section outlet pipe, a cyclone separator, a rotary kiln, a second dust remover, a fan and a chimney which are sequentially communicated;
the method is characterized in that: the power generation system also comprises a heat accumulator and a superheater, wherein the inlet of the heat accumulator is communicated with the steam pocket, the outlet of the heat accumulator is communicated with one end of a heat exchange pipeline in the superheater, and the other end of the heat exchange pipeline is communicated with the steam turbine; the superheater is connected between the cyclone separator and the rotary kiln.
2. The AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system of claim 1, wherein: the condenser is provided with a cooling tower and a circulating water pump, and a circulating condensation water path is formed by a pipeline inside the condenser, the cooling tower and the circulating water pump.
3. The AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system of claim 1, wherein: the water vapor in the vaporization flue and the steam drum form natural circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920510849.1U CN210089420U (en) | 2019-04-15 | 2019-04-15 | AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920510849.1U CN210089420U (en) | 2019-04-15 | 2019-04-15 | AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system |
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| CN210089420U true CN210089420U (en) | 2020-02-18 |
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| CN201920510849.1U Active CN210089420U (en) | 2019-04-15 | 2019-04-15 | AOD refining furnace and submerged arc furnace flue gas recovery waste heat power generation system |
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| CN (1) | CN210089420U (en) |
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- 2019-04-15 CN CN201920510849.1U patent/CN210089420U/en active Active
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