CN217464633U - Waste heat recovery-based multi-energy complementary heating system - Google Patents
Waste heat recovery-based multi-energy complementary heating system Download PDFInfo
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- CN217464633U CN217464633U CN202221329411.1U CN202221329411U CN217464633U CN 217464633 U CN217464633 U CN 217464633U CN 202221329411 U CN202221329411 U CN 202221329411U CN 217464633 U CN217464633 U CN 217464633U
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- waste heat
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- slag flushing
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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
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Abstract
本实用新型公开的是一种基于余热回收的多能互补供热系统，包括冲渣水余热回收系统、烧结烟气余热回收系统、高炉煤气余热回收系统、烧结环冷余热回收系统、净环水余热回收系统、尖峰加热器及汽轮机，所述冲渣水余热回收系统、烧结烟气余热回收系统、净环水余热回收系统和汽轮机与尖峰加热器连通，所述烧结环冷余热回收系统、高炉煤气余热回收系统和净环水余热回收系统与汽轮机连通。本实用新型能够回收钢铁冶炼厂冲渣水的余热、烧结工艺和高炉炼铁工序中的余热，冶炼厂难回收的低温热源都得到回收利用，并且为城市热力管网提供75℃左右的热水，具有显著的经济效益和社会效益，同时也符合碳中和、碳达峰的目标要求。
The utility model discloses a multi-energy complementary heating system based on waste heat recovery, comprising a slag flushing water waste heat recovery system, a sintering flue gas waste heat recovery system, a blast furnace gas waste heat recovery system, a sintering ring cooling waste heat recovery system, Waste heat recovery system, peak heater and steam turbine, the slag flushing water waste heat recovery system, sintering flue gas waste heat recovery system, clean ring water waste heat recovery system and steam turbine are communicated with the peak heater, the sintering ring cooling waste heat recovery system, blast furnace The gas waste heat recovery system and the clean ring water waste heat recovery system are communicated with the steam turbine. The utility model can recover the waste heat of the slag flushing water in the iron and steel smelting plant, the waste heat in the sintering process and the blast furnace ironmaking process, the low-temperature heat sources that are difficult to recover in the smelting plant can be recycled, and the hot water of about 75°C can be provided for the urban heat pipe network. , has significant economic and social benefits, and also meets the goals of carbon neutrality and carbon peaking.
Description
Technical Field
The utility model belongs to the technical field of waste heat recovery is energy-conserving, specific saying so indicates a complementary heating system of multipotency based on waste heat recovery.
Background
The waste heat of the steel smelting plant is generally the waste heat of slag flushing water, the waste heat of sintering flue gas, the waste heat of blast furnace gas, the waste heat of sintering ring cooling and the waste heat of clean ring water. At present, the recovery rate of the waste heat of the steel smelting plant is quite low, wherein most of the high-temperature waste heat is easy to recycle and is recycled, and the low-temperature waste heat accounts for about 35 percent of the total waste heat, and the recycling rate is almost zero. For example, most of the waste heat of the slag flushing water is discharged into the atmosphere to be released, the temperature of a heat source of the slag flushing water is low, but the flow rate of the slag flushing water is quite large, the slag flushing water has certain corrosivity, the waste heat of the blast furnace slag flushing water is recycled, energy is saved, and the environment is protected. And for example, the total energy consumption of the sintering process is only second to that of iron making, generally 10% -20% of that of iron and steel enterprises, and a waste heat boiler can be usually utilized to generate steam or provide hot water for direct utilization.
SUMMERY OF THE UTILITY MODEL
The utility model provides a complementary heating system of multipotency based on waste heat recovery, its main aim at overcome current steel smelting plant's waste heat and do not carry out recycle's problem.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a multi-energy complementary heat supply system based on waste heat recovery comprises a slag flushing water waste heat recovery system, a sintering flue gas waste heat recovery system, a blast furnace gas waste heat recovery system, a sintering ring cold waste heat recovery system, a clean ring water waste heat recovery system, a peak heater and a steam turbine, wherein the slag flushing water waste heat recovery system, the sintering flue gas waste heat recovery system, the clean ring water waste heat recovery system and the steam turbine are communicated with the peak heater, and the sintering ring cold waste heat recovery system, the blast furnace gas waste heat recovery system and the clean ring water waste heat recovery system are communicated with the steam turbine.
Further, the slag flushing water waste heat recovery system comprises a slag flushing water tank, a dirt separator, a slag flushing water circulating water pump, a special slag flushing water heat exchanger, an internal circulating pipeline circulating water pump and a heat supply network pipeline, wherein the slag flushing water tank is communicated with the dirt separator, the dirt separator is communicated with the slag flushing water circulating water pump, the slag flushing water circulating water pump is communicated with the special slag flushing water heat exchanger, the special slag flushing water heat exchanger is communicated with the internal circulating pipeline circulating water pump, the heat supply network pipeline and the slag flushing water tank, and the internal circulating pipeline circulating water pump is communicated with the peak heater.
Furthermore, the sintering flue gas waste heat recovery system comprises a sintering machine and a sintering waste heat boiler, wherein the sintering machine is communicated with the sintering waste heat boiler, and the sintering waste heat boiler is communicated with the peak heater.
Further, the blast furnace gas waste heat recovery system comprises a gas boiler, and the gas boiler is communicated with a steam turbine.
Further, the sintering ring cooling waste heat recovery system comprises a ring cooling machine and a ring cooling waste heat boiler, the ring cooling machine is communicated with the ring cooling waste heat boiler, and the ring cooling waste heat boiler is communicated with the steam turbine.
Furthermore, the water circulation waste heat recovery system comprises a water circulation tank and an absorption heat pump, wherein the water circulation tank is communicated with the absorption heat pump, and the absorption heat pump is communicated with the steam turbine and the peak heater.
From the above description of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses can retrieve the waste heat of iron and steel smelting plant slag flushing water, waste heat in sintering process and the blast furnace ironmaking process, the difficult low temperature heat source of retrieving of smelting plant all obtains recycle, and provide the hot water about 75 ℃ for city heating power pipe network, economic benefits and social that have showing, today that the energy is nervous day by day, development thermal efficiency is high, the civilian hot problem in residence both can be solved to environment-friendly industry waste heat heating technique, also accord with carbon neutralization, the target requirement that carbon reaches the peak.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
Referring to fig. 1, a multi-energy complementary heat supply system based on waste heat recovery comprises a slag flushing water waste heat recovery system, a sintering flue gas waste heat recovery system, a blast furnace gas waste heat recovery system, a sintering ring cooling waste heat recovery system, a water purification ring waste heat recovery system, a peak heater 6 and a steam turbine 7. The slag flushing water waste heat recovery system 1, the sintering flue gas waste heat recovery system 2, the clean ring water waste heat recovery system 5 and the steam turbine 7 are communicated with the peak heating device 6, and the sintering ring cold waste heat recovery system 4, the blast furnace gas waste heat recovery system and the clean ring water waste heat recovery system 5 are communicated with the steam turbine 7.
Referring to fig. 1, the slag flushing water waste heat recovery system comprises a slag flushing water tank 11, a dirt separator 12, a slag flushing water circulating water pump 13, a special slag flushing water heat exchanger 14, an internal circulating pipeline circulating water pump 15 and a heat supply network pipeline 16. The slag flushing water tank 11 is communicated with the dirt remover 12, the dirt remover 12 is communicated with the slag flushing water circulating water pump 13, the slag flushing water circulating water pump 13 is communicated with the special heat exchanger 14 for the slag flushing water, the special heat exchanger 14 for the slag flushing water is communicated with the internal circulating pipeline circulating water pump 15, the heat net pipeline 16 and the slag flushing water tank 11, and the internal circulating pipeline circulating water pump 15 is communicated with the peak heater 6. The high-temperature slag flushing water is filtered by the dirt separator 12, enters the special heat exchanger 14 for the slag flushing water, exchanges heat with low-temperature heat supply network water in the heat supply network pipeline 16, and is heated after flowing through the special heat exchanger 14 for the slag flushing water, and is sent to the heat exchange station after being heated by the peak heater 6.
Referring to fig. 1, the sintering flue gas waste heat recovery system comprises a sintering machine 21 and a sintering waste heat boiler 22, wherein the sintering machine 21 is communicated with the sintering waste heat boiler 22, and the sintering waste heat boiler 22 is communicated with the spike heater 6. A large amount of high-temperature flue gas is generated in the sintering process, waste heat in the flue gas can be recovered through the sintering waste heat boiler 22 to generate high-temperature steam, and the steam generated by the sintering waste heat boiler 22 enters the peak heater 6 to be used for reheating low-temperature heat supply network water.
Referring to fig. 1, the blast furnace gas waste heat recovery system includes a gas boiler 3, and the gas boiler 3 is communicated with a steam turbine 7. A large amount of blast furnace gas is generated in the iron-making process, and the gas boiler 3 can be used as fuel for producing high-temperature steam for the steam turbine 7.
Referring to fig. 1, the sintering ring cooling waste heat recovery system comprises a ring cooling machine 41 and a ring cooling waste heat boiler 42, wherein the ring cooling machine 41 is communicated with the ring cooling waste heat boiler 42, and the ring cooling waste heat boiler 42 is communicated with a steam turbine 7. The ring cooling machine 41 is used for cooling the sintered ore material, a large amount of waste heat is generated in the cooling process, and the waste heat can be recovered by using a ring cooling waste heat boiler 42 to produce high-temperature steam for the steam turbine 7. The water purification and circulation waste heat recovery system comprises a water purification and circulation tank 51 and an absorption heat pump 52, wherein the water purification and circulation tank 51 is communicated with the absorption heat pump 52, and the absorption heat pump 52 is communicated with a steam turbine 7 and a peak heater 6; the temperature of the clean circulating water is slightly low, the absorption heat pump 52 can use the steam turbine 7 as a driving heat source to recover the heat contained in the clean circulating water, and in addition, the absorption heat pump 52 can heat a certain amount of heat supply network water, and then the heat supply network water is heated by the peak heater 6 and sent to the heat exchange station.
Referring to fig. 1, the design principle of the present invention is as follows: the temperature of the heat source of the slag flushing water is low, but the flow rate of the slag flushing water is quite large, the slag flushing water has certain corrosivity, and the waste heat of the slag flushing water of the blast furnace is recovered, so that the energy is saved, and the environment is protected. The total energy consumption of the sintering process is only second to iron making, generally 10% -20% of that of iron and steel enterprises, and a waste heat boiler can be used for generating steam or providing hot water for direct utilization. The blast furnace gas generated in the blast furnace smelting process and the waste heat of the circular cooler can be recovered by using a waste heat boiler. The parameters of the waste heat of the clean circulating water are low, and the waste heat can not be directly recycled, and partial steam can be introduced to drive the absorption heat pump so as to improve the energy quality and meet the technical parameter requirements of the heat supply process.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221329411.1U CN217464633U (en) | 2022-05-30 | 2022-05-30 | Waste heat recovery-based multi-energy complementary heating system |
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| CN202221329411.1U CN217464633U (en) | 2022-05-30 | 2022-05-30 | Waste heat recovery-based multi-energy complementary heating system |
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| CN217464633U true CN217464633U (en) | 2022-09-20 |
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| CN202221329411.1U Active CN217464633U (en) | 2022-05-30 | 2022-05-30 | Waste heat recovery-based multi-energy complementary heating system |
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2022
- 2022-05-30 CN CN202221329411.1U patent/CN217464633U/en active Active
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Address after: 100000 No.1 Wangzhuang Road, Haidian District, Beijing, Tsinghua Tongfang Science and Technology Building A, 22nd Floor, Room 2206 Patentee after: Tonghai Energy Technology Development Co.,Ltd. Country or region after: China Address before: 100000 No.1 Wangzhuang Road, Haidian District, Beijing, Tsinghua Tongfang Science and Technology Building A, 22nd Floor, Room 2206 Patentee before: Tongfang Energy Technology Development Co.,Ltd. Country or region before: China |