CN114703330B - Steel slag hot stuffiness waste heat power generation and heating system and adjusting method - Google Patents
Steel slag hot stuffiness waste heat power generation and heating system and adjusting method Download PDFInfo
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- CN114703330B CN114703330B CN202210236672.7A CN202210236672A CN114703330B CN 114703330 B CN114703330 B CN 114703330B CN 202210236672 A CN202210236672 A CN 202210236672A CN 114703330 B CN114703330 B CN 114703330B
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- 238000010248 power generation Methods 0.000 title claims abstract description 77
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 239000002893 slag Substances 0.000 title claims abstract description 69
- 238000010438 heat treatment Methods 0.000 title claims abstract description 59
- 239000002918 waste heat Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 238000005338 heat storage Methods 0.000 claims abstract description 39
- 230000001276 controlling effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a steel slag hot stuffy waste heat power generation and heating system which comprises a steel slag hot stuffy system, a heat storage heat exchanger, a reheater, an organic Rankine cycle power generation system and a heating pipe network, wherein the steel slag hot stuffy system is respectively connected to the organic Rankine cycle power generation system and the heat storage heat exchanger through a first steam pipeline and a second steam pipeline, and the heat storage heat exchanger is connected to the heating pipe network through a first hot water pipeline; the heat storage heat exchanger is connected to the organic Rankine cycle power generation system through a second hot water pipeline; a steam filter is arranged on the first steam pipeline close to the discharge end of the steel slag hot-seal system; the first steam pipeline is connected to a reheater through a steam branch, and the reheater is connected to the organic Rankine cycle power generation system through a third hot water pipeline. The invention can effectively utilize the waste heat resource of the steel slag, improve the energy utilization efficiency, and flexibly adjust the proportion of power generation and heat supply by controlling the opening of the valve according to the working condition requirement.
Description
Technical Field
The invention relates to the technical field of waste heat recovery and utilization, in particular to a steel slag hot stuffiness waste heat power generation and heating system and an adjusting method.
Background
At present, the utilization of the residual heat of the steel slag is almost blank abroad. Compared with the scale of steel in countries such as Europe and America, the scale of the steel has a large difference, the steel process flow is mostly short, the yield of the converter steel slag is low, and the converter steel slag has no much attention to the field of steel slag waste heat recovery and utilization with higher technical difficulty; the steel slag treatment and waste heat recovery are studied and practiced in Asian countries such as Japan and Korean, but they are only in the experimental stage.
High-quality waste heat suitable for recycling in iron and steel enterprises in China is completely recycled, and low-medium-quality waste heat with low economy is also recycled to a certain extent. The nation provides a more strict energy-saving and emission-reducing index, steel enterprises face survival challenges again, and the development of energy-saving potential and corresponding waste heat recovery technology is one of the problems which need to be completed by the steel enterprises urgently.
The annual steel slag yield of China is about 1 hundred million tons, the temperature of the molten converter steel slag reaches 1500-1600 ℃, and the molten converter steel slag has extremely high sensible heat and latent heat, huge steel slag yield and huge waste heat recovery potential. Researchers and technicians of steel enterprises are always exploring a method for recovering the waste heat of the steel slag, and no industrial application case exists at present.
The invention is based on widely applied rolling crushing-waste heat self-decomposition pressure hot stuffy process equipment, but steam in a hot stuffy area cannot be utilized and is completely diffused, thereby causing great energy waste and environmental protection problems. The steel slag hot stuffiness zone waste heat power generation and heating system can solve the problem.
Disclosure of Invention
The invention provides a steel slag hot stuffiness waste heat power generation and heating system and an adjusting method, and solves the problem that a rolling crushing-waste heat self-decomposing and pressing hot stuffiness process cannot utilize hot stuffiness waste heat to cause resource waste.
The steel slag hot stuffy waste heat power generation and heating system comprises a steel slag hot stuffy system, a heat storage heat exchanger, a reheater, an organic Rankine cycle power generation system and a heating pipe network, wherein the steel slag hot stuffy system is respectively connected to the organic Rankine cycle power generation system and the heat storage heat exchanger through a first steam pipeline and a second steam pipeline, and the heat storage heat exchanger is connected to the heating pipe network through a first hot water pipeline.
The heat storage heat exchanger is connected to the organic Rankine cycle power generation system through a second hot water pipeline.
And a steam filter is arranged at the upper part of the first steam pipeline close to the discharge end of the steel slag hot stuffy system.
The first steam pipeline is connected to a reheater through a steam branch, and the reheater is connected to the organic Rankine cycle power generation system through a third hot water pipeline.
Preferably, the hot water pipeline is connected with a hot water branch through a two-way pipeline and is connected with a reheater.
Preferably, the heat storage device further comprises a condensed water heat exchanger, and the heat storage heat exchanger is connected to the condensed water heat exchanger through a condensed water pipeline I; the organic Rankine cycle power generation system is connected to the condensed water heat exchanger through a condensed water pipeline II; the organic Rankine cycle power generation system is connected with the condensed water heat exchanger through a low-temperature hot water pipeline III, and the low-temperature hot water pipeline III is provided with a low-temperature hot water branch which is connected with a heating pipe network and then is connected with the condensed water heat exchanger; and the condensed water heat exchanger is respectively connected to the heat storage heat exchanger and the steel slag hot-seal system through a first low-temperature hot water pipeline and a second low-temperature hot water pipeline.
Preferably, a valve five and a valve one are respectively arranged on the steam pipeline one and the steam pipeline two, and a valve four is arranged on the steam branch; a third valve, a second valve and a seventh valve are respectively arranged on the first hot water pipeline and the second hot water pipeline, a pipeline between the second valve and the seventh valve is connected with a hot water branch, a sixth valve is arranged on the hot water branch, and a ninth valve and an eighth valve are respectively arranged on the third low-temperature hot water pipeline and the branches thereof;
each valve is used for adjusting the flow of the corresponding pipeline.
Preferably, each valve is a manual valve or an electric valve.
Preferably, the power supply of the electric valve is connected to the control cabinet, and the opening of the valve is automatically controlled by the control system.
Based on the adjusting method of the steel slag hot stuffiness waste heat power generation and heating system,
adjusting the opening of the first valve, and controlling high-temperature steam generated by the steel slag hot-seal system to enter the heat storage heat exchanger for heat exchange to generate hot water;
the opening degrees of the second valve and the seventh valve are adjusted, so that the hot water flowing out of the heat storage heat exchanger enters an organic Rankine cycle power generation system for power generation;
and adjusting the opening degree of the third valve to enable hot water flowing out of the heat storage heat exchanger to enter a heating pipe network for heating.
Preferably, the amount of hot water entering the organic Rankine cycle power generation system and the heating pipe network is adjusted by controlling the opening degree of the second valve and the opening degree of the third valve.
Preferably, the fifth valve is closed, and the opening degrees of the first valve, the fourth valve, the sixth valve and the seventh valve are adjusted, so that steam generated by the steel slag hot stuffiness system enters a reheater after passing through a steam filter, and high-temperature hot water passing through the second valve is reheated.
Preferably, the fourth valve is closed, and steam generated by the steel slag hot-sealing system can directly enter the organic Rankine cycle power generation system after passing through a steam filter by controlling the opening degrees of the first valve and the fifth valve.
Preferably, the opening degrees of the valve eight and the valve nine are controlled, so that the low-temperature hot water passing through the organic Rankine cycle power generation system enters a heating pipe network for heating.
The heat storage heat exchanger heats low-temperature hot water to high-temperature hot water by utilizing steam generated by the steel slag hot stuffy system, and the high-temperature hot water can enter the organic Rankine cycle power generation system to generate power and also can enter a heating pipe network by controlling the opening of the valve, and can control the proportion of the high-temperature hot water consumed by power generation and heating.
And steam generated by the steel slag hot-seal system passes through the steam filter and then enters the reheater through the opening of the control valve, and high-temperature hot water entering the organic Rankine cycle power generation system for power generation is reheated, so that the temperature of the hot water is increased, and the power generation efficiency is improved.
Steam generated by the steel slag hot-closed system can directly enter the organic Rankine cycle power generation system after passing through the steam filter by controlling the opening of the valve, so that the power generation efficiency is improved.
The low-temperature hot water passing through the organic Rankine cycle power generation system can enter a heating pipe network for heating through controlling the opening degree of the valve.
The steam temperature is 100-300 ℃, the high-temperature hot water temperature is 85-100 ℃, and the low-temperature hot water temperature is 40-85 ℃.
The condensed water generated by the heat storage heat exchanger and the organic Rankine cycle power generation system returns to the steel slag hot stuffy system again after being preheated by the low-temperature hot water passing through the heating pipe network and the organic Rankine cycle power generation system, so that the water consumption of the steel slag hot stuffy system is reduced to the maximum extent.
The valve can be a manual valve or an electric valve. If the valve is an electric valve, the power supply of the valve is connected to the control cabinet, and the opening of the valve is automatically controlled by the control system.
The invention has the advantages of effectively utilizing the waste heat resource of the steel slag, improving the energy utilization efficiency and flexibly adjusting the proportion of power generation and heat supply according to the working condition requirement. The efficiency of the power generation and heat supply system can be further improved by arranging the reheater and the steam filter. The arrangement of the condensed water circulating system can reduce the water consumption of the steel slag hot stuffy system to the maximum extent.
Drawings
FIG. 1 is a schematic flow chart of a steel slag hot stuffiness waste heat power generation and heating system according to an embodiment of the invention.
Numbering: 1-a valve I, 2-a valve II, 3-a valve III, 4-a valve IV, 5-a valve V, 6-a valve VI, 7-a valve VII, 8-a valve VIII, 9-a valve VII, 10-a control cabinet, 11-a steel slag hot-closed system, 12-a heat storage heat exchanger, 13-a steam filter, 14-a reheater, 15-an organic Rankine cycle power generation system, 16-a heating pipe network and 17-a condensed water heat exchanger.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
A steel slag hot stuffy waste heat power generation and heating system comprises a steel slag hot stuffy system 11, a heat storage heat exchanger 12, a reheater 14, an organic Rankine cycle power generation system 15 and a heating pipe network 16, wherein the steel slag hot stuffy system 11 is respectively connected to the organic Rankine cycle power generation system 15 and the heat storage heat exchanger 12 through a steam pipeline I and a steam pipeline II, and the heat storage heat exchanger 12 is connected to the heating pipe network 16 through a hot water pipeline I.
The heat storage and exchange device 12 is connected to an organic Rankine cycle power generation system 15 through a second hot water pipeline.
And a steam filter 13 is arranged on the first steam pipeline close to the discharge end of the steel slag hot disintegration system 11.
The first steam pipeline is connected to a reheater 14 through a steam branch, and the reheater 14 is connected to an organic Rankine cycle power generation system 15 through a third hot water pipeline.
Further, the hot water pipe is connected to the reheater 14 through a hot water branch.
Further, the system also comprises a condensed water heat exchanger 17, and the heat storage heat exchanger 12 is connected to the condensed water heat exchanger 17 through a condensed water pipeline; the organic Rankine cycle power generation system 15 is connected to a condensed water heat exchanger 17 through a condensed water pipeline II; the organic Rankine cycle power generation system 15 is connected with a condensed water heat exchanger 17 through a low-temperature hot water pipeline III, and the low-temperature hot water pipeline III is provided with a low-temperature hot water branch which is connected with a heating pipe network 16 and then is connected with the condensed water heat exchanger 17; and the condensed water heat exchanger 17 is respectively connected to the heat storage heat exchanger 12 and the steel slag hot stuffy system 11 through a first low-temperature hot water pipeline and a second low-temperature hot water pipeline.
Furthermore, a valve five 5 and a valve one 1 are respectively arranged on the steam pipeline I and the steam pipeline II, and a valve four 4 is arranged on the steam branch; the hot water pipeline I and the hot water pipeline II are respectively provided with a valve III 3, a valve II 2 and a valve VII 7, the pipeline between the valve II 2 and the valve VII 7 is connected with a hot water branch, the hot water branch is provided with a valve VI 6, and the low-temperature hot water pipeline III and the branch thereof are respectively provided with a valve ninth 9 and a valve eighth 8.
Each valve is used for regulating the flow of the corresponding pipeline.
Further, each valve is a manual valve or an electric valve.
Further, the power supply of the electric valve is connected to the control cabinet 10, and the opening of the valve is automatically controlled by the control system.
An adjusting method of a steel slag hot stuffiness waste heat power generation and heating system comprises the following steps of
The opening degree of the first valve 1 is adjusted, and high-temperature steam generated by the steel slag hot-seal system 11 is controlled to enter the heat storage heat exchanger 12 for heat exchange to generate hot water;
the opening degrees of the second valve 2 and the seventh valve 7 are adjusted, so that the hot water flowing out of the heat storage heat exchanger 12 enters an organic Rankine cycle power generation system 15 for power generation;
and adjusting the opening degree of the third valve 3 to enable the hot water flowing out of the heat storage heat exchanger 12 to enter a heating pipe network 16 for heating.
Furthermore, the hot water amount entering the organic Rankine cycle power generation system 15 and the heating pipe network 16 can be adjusted by controlling the opening degree of the second valve 2 and the opening degree of the third valve 3.
Further, a valve five 5 can be closed, and steam generated by the slag hot-seal system 11 enters a reheater 14 after passing through a steam filter 13 by adjusting the opening degrees of a valve one 1, a valve four 4, a valve six 6 and a valve seven 7, so that high-temperature hot water passing through a valve two 2 is reheated.
Further, the valve IV 4 can be closed, and by controlling the opening degree of the valve I1 and the valve V5, steam generated by the slag hot-seal system 11 can directly enter the organic Rankine cycle power generation system 15 after passing through the steam filter 13.
Further, the opening degree of the valve eight 8 and the valve nine 9 can be controlled, so that the low-temperature hot water passing through the organic rankine cycle power generation system 15 enters the heating pipe network 16 for heating.
The following is a further detailed description of the operation of the power generation and heating system of the present invention.
Power generation mode
As shown in figure 1, steam generated by the steel slag hot-seal system 11 transfers heat to low-temperature hot water through the heat storage heat exchanger 12, and the generated high-temperature hot water enters the organic Rankine cycle power generation system 15 through the second valve 2 and the seventh valve 7 to generate power.
By controlling the opening degree of the valve six 6 and the valve seven 7, steam generated by the steel slag hot-seal system 11 can enter the reheater 14 through the steam filter 13 and the valve four 4 to reheat the generated high-temperature hot water, so that the temperature of the hot water is increased, and the power generation efficiency is improved.
Steam generated by the steel slag hot-closed system 11 can directly enter the organic Rankine cycle power generation system 15 through the steam filter 13 and the valve five 5, so that the power generation efficiency is improved.
The orc system 15 may be connected to an inverter, and may convert dc power into ac power for incorporation into a plant or other power system.
Heating mode
As shown in fig. 1, steam generated by the steel slag hot stuffy system 11 transfers heat to low-temperature hot water through the heat storage and exchange device 12, and the generated high-temperature hot water enters a heating pipe network 16 through a valve iii 3.
The hot water passing through the organic rankine cycle power generation system 15 can enter a heating pipe network 16 for heating through controlling the opening degree of the eight 8 valve and the nine 9 valve.
The condensed water generated by the heat storage heat exchanger 12, the reheater 14 and the organic Rankine cycle power generation system 15 is preheated by the condensed water heat exchanger 17, passes through the heating pipe network 16 and the low-temperature hot water of the organic Rankine cycle power generation system 15 and then returns to the slag hot-stuffy system 11 again, and therefore the water consumption of the slag hot-stuffy system 11 is reduced to the maximum extent.
The heating pipe network 16 may or may not include a secondary water heat exchange system.
Each valve can be a manual valve or an electric valve. If the valve is an electric valve, the power supply of the valve is connected to the control cabinet 10, and the opening of the valve is automatically controlled by a control system.
By controlling the opening of the valve, the proportion of power generation and heating can be adjusted.
In the invention, the control cabinet 10, the steel slag hot-seal system 11, the heat storage heat exchanger 12, the steam filter 13, the reheater 14, the organic Rankine cycle power generation system 15, the heating pipe network 16 and the condensed water heat exchanger 17 are all existing equipment, and the specific structures thereof are all existing open equipment structures.
The above examples are provided to those of ordinary skill in the art to fully disclose and describe how to make and use the claimed embodiments, and are not intended to limit the scope of the disclosure herein. Modifications apparent to those skilled in the art are intended to be within the scope of the appended claims.
Claims (11)
1. The steel slag hot stuffy waste heat power generation and heating system is characterized by comprising a steel slag hot stuffy system, a heat storage heat exchanger, a reheater, an organic Rankine cycle power generation system and a heating pipe network, wherein the steel slag hot stuffy system is respectively connected to the organic Rankine cycle power generation system and the heat storage heat exchanger through a first steam pipeline and a second steam pipeline, and the heat storage heat exchanger is connected to the heating pipe network through a first hot water pipeline;
the heat storage heat exchanger is connected to the organic Rankine cycle power generation system through a second hot water pipeline;
a steam filter is arranged on the first steam pipeline close to the discharge end of the steel slag hot-seal system;
the first steam pipeline is connected to a reheater through a steam branch, and the reheater is connected to the organic Rankine cycle power generation system through a third hot water pipeline.
2. The system for generating and heating by utilizing the hot stuffy waste heat of the steel slag as set forth in claim 1, wherein the hot water pipeline is connected with a reheater through a hot water branch.
3. The steel slag hot stuffiness waste heat power generation and heating system as defined in claim 1, further comprising a condensed water heat exchanger, wherein the heat storage heat exchanger is connected to the condensed water heat exchanger through a condensed water pipeline I; the organic Rankine cycle power generation system is connected to the condensed water heat exchanger through a condensed water pipeline II; the organic Rankine cycle power generation system is connected with the condensed water heat exchanger through a low-temperature hot water pipeline III, and the low-temperature hot water pipeline III is provided with a low-temperature hot water branch which is connected with a heating pipe network and then is connected with the condensed water heat exchanger; and the condensed water heat exchanger is respectively connected to the heat storage heat exchanger and the steel slag hot-stuffy system through a first low-temperature hot water pipeline and a second low-temperature hot water pipeline.
4. The system for generating and heating by utilizing the hot stuffy waste heat of the steel slag as claimed in claim 3, wherein a fifth valve and a first valve are respectively arranged on the first steam pipeline and the second steam pipeline, and a fourth valve is arranged on the branch steam pipeline; a third valve, a second valve and a seventh valve are respectively arranged on the first hot water pipeline and the second hot water pipeline, a pipeline between the second valve and the seventh valve is connected with a hot water branch, a sixth valve is arranged on the hot water branch, and a ninth valve and an eighth valve are respectively arranged on the third low-temperature hot water pipeline and the branches thereof;
each valve is used for adjusting the flow of the corresponding pipeline.
5. The system for power generation and heating by utilizing the hot stuffy waste heat of the steel slag as set forth in claim 4, wherein each valve is a manual valve or an electric valve.
6. The system for generating and heating by utilizing the waste heat of the hot stuffiness of the steel slag as claimed in claim 5, wherein the power supply of the electric valves is connected to the control cabinet, and the opening of the valves is automatically controlled by the control system.
7. The method for regulating the power generation and heating system by utilizing the hot stuffy waste heat of the steel slag according to any one of claims 4 to 6,
adjusting the opening of the first valve, and controlling high-temperature steam generated by the steel slag hot-closed system to enter the heat storage heat exchanger for heat exchange to generate hot water;
the opening degrees of the second valve and the seventh valve are adjusted, so that the hot water flowing out of the heat storage heat exchanger enters an organic Rankine cycle power generation system for power generation;
and adjusting the opening degree of the third valve to enable hot water flowing out of the heat storage heat exchanger to enter a heating pipe network for heating.
8. The method of claim 7, wherein the amount of hot water entering the orc power generation system and the heating pipe network is adjusted by controlling the opening degree of the second valve and the third valve.
9. The regulating method according to claim 7, wherein the fifth valve is closed, and the first valve, the fourth valve, the sixth valve and the seventh valve are regulated to open, so that steam generated by the slag hot-seal system enters a reheater after passing through a steam filter, and high-temperature hot water passing through the second valve is reheated.
10. The method for regulating the temperature of the steel slag in the organic Rankine cycle power generation system according to claim 7, wherein the fourth valve is closed, and the steam generated by the steel slag hot closed system can directly enter the organic Rankine cycle power generation system after passing through a steam filter by controlling the opening degrees of the first valve and the fifth valve.
11. The control method according to claim 7, wherein opening degrees of the eight and nine valves are controlled so that the low-temperature hot water having passed through the orc system enters a heating pipe network for heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210236672.7A CN114703330B (en) | 2022-03-10 | 2022-03-10 | Steel slag hot stuffiness waste heat power generation and heating system and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210236672.7A CN114703330B (en) | 2022-03-10 | 2022-03-10 | Steel slag hot stuffiness waste heat power generation and heating system and adjusting method |
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| CN114703330A CN114703330A (en) | 2022-07-05 |
| CN114703330B true CN114703330B (en) | 2023-03-14 |
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|---|---|---|---|---|
| CN202770235U (en) * | 2012-09-03 | 2013-03-06 | 长沙凯瑞重工机械有限公司 | System for refrigeration and heating by utilizing waste heat of steel slag |
| CN103696817A (en) * | 2013-12-25 | 2014-04-02 | 鞍山钢铁集团公司 | Power generating device and method using melting slag heat energy |
| CN104561405A (en) * | 2015-01-05 | 2015-04-29 | 攀枝花市金西能源环保科技有限公司 | Hot steel-making slag high-temperature solidification, pelletization and heat recovery method and equipment system thereof |
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| KR20180055471A (en) * | 2016-11-17 | 2018-05-25 | 한국지역난방공사 | Combined heat and power system for using organic rankine cycle |
| CN111378796A (en) * | 2018-12-30 | 2020-07-07 | 孙学贤 | Converter steel slag waste heat utilization equipment system and process principle |
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| CN202770235U (en) * | 2012-09-03 | 2013-03-06 | 长沙凯瑞重工机械有限公司 | System for refrigeration and heating by utilizing waste heat of steel slag |
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| CN104561405A (en) * | 2015-01-05 | 2015-04-29 | 攀枝花市金西能源环保科技有限公司 | Hot steel-making slag high-temperature solidification, pelletization and heat recovery method and equipment system thereof |
| CN106224033A (en) * | 2016-08-31 | 2016-12-14 | 中冶节能环保有限责任公司 | A kind of process utilizing slag to have the producing steam generating of pressure hot vexed process institute and device |
| KR20180055471A (en) * | 2016-11-17 | 2018-05-25 | 한국지역난방공사 | Combined heat and power system for using organic rankine cycle |
| CN111378796A (en) * | 2018-12-30 | 2020-07-07 | 孙学贤 | Converter steel slag waste heat utilization equipment system and process principle |
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