CN216665701U - Slag flushing waste heat power generation system - Google Patents
Slag flushing waste heat power generation system Download PDFInfo
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- CN216665701U CN216665701U CN202220383334.1U CN202220383334U CN216665701U CN 216665701 U CN216665701 U CN 216665701U CN 202220383334 U CN202220383334 U CN 202220383334U CN 216665701 U CN216665701 U CN 216665701U
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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
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Abstract
The utility model provides a slag flushing waste heat power generation system which comprises a slag flushing groove, an evaporator, an ORC generator and a working medium pump, wherein the slag flushing groove is provided with a plurality of grooves; the slag flushing grooves and the evaporators are respectively provided with a plurality of ones, and at least part of the evaporators are accommodated in the corresponding slag flushing grooves; the ORC generator is provided with a working medium inlet and a working medium outlet; the working medium inlet is respectively communicated with the outlets of the evaporators through a plurality of branch inlet pipes, and each branch inlet pipe is provided with a first control valve; the working medium outlet is provided with a working medium pump, the outlet of the working medium pump is respectively communicated with the inlets of the evaporators through a plurality of branch outlet pipes, and each branch outlet pipe is provided with a second control valve. The utility model realizes the full utilization of the slag flushing waste heat, generates electric energy through the waste heat, can be reused in the production link of a factory, brings higher production value for enterprises, and can effectively avoid the influence of the discontinuous heat source supply on a power generation system.
Description
Technical Field
The utility model belongs to the technical field of blast furnace waste heat utilization, and particularly relates to a slag flushing waste heat power generation system.
Background
In the blast furnace ironmaking process, high-temperature slag at about 1400 ℃ is generated, a large amount of slag flushing steam can be generated in the process of cooling the slag in a slag flushing groove, the steam is exhausted to the atmosphere through a chimney under the general condition, the heat energy of the steam cannot be utilized, the energy waste is caused, and the environment is also polluted.
In order to realize the utilization of the residual heat of the steam, the prior art generally converts the partial residual heat into hot water through a heat exchanger and then heats the hot water. However, the value of the utilization method for enterprises is not high, and the slag flushing heat source is a low-quality heat source, so that the heating effect by utilizing the slag flushing heat source is not ideal.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a slag flushing waste heat power generation system, which aims to realize power generation by fully utilizing slag flushing waste heat and bring higher production value to enterprises.
In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a towards sediment waste heat power generation system includes:
the device comprises a slag flushing tank, an evaporator, an ORC generator (organic Rankine cycle generator) and a working medium pump;
the slag flushing grooves and the evaporators are respectively provided with a plurality of evaporators, and at least part of the evaporators are accommodated in the corresponding slag flushing grooves;
the ORC generator is provided with a working medium inlet and a working medium outlet;
the working medium inlet is respectively communicated with outlets of the evaporators through a plurality of branch inlet pipes, and each branch inlet pipe is provided with a first control valve;
the working medium outlet is provided with a working medium pump, the outlet of the working medium pump is respectively communicated with the inlets of the plurality of evaporators through a plurality of branch outlet pipes, and each branch outlet pipe is provided with a second control valve.
In one possible implementation, the evaporator comprises a housing, within which the working medium is contained, the housing being formed with an inlet and an outlet through which the working medium passes.
In one possible implementation, the housing is a flat shell.
In a possible realization mode, a gas-liquid separator is arranged at the working medium inlet.
In one possible implementation, the gas-liquid separator is a baffled separator or a wire-mesh filter separator.
In one possible embodiment, a condenser is provided between the working medium pump and the working medium outlet.
In one possible implementation, the condenser is a shell and tube condenser.
In one possible implementation, the first control valve and the second control valve are both solenoid valves.
In one possible implementation, the inner diameter of the branch inlet pipe is smaller than the inner diameter of the branch outlet pipe.
In a possible implementation manner, the branch inlet pipe is wrapped with an insulating layer.
Compared with the prior art, according to the scheme shown in the embodiment of the application, as one blast furnace is generally provided with a plurality of slag outlets, different slag outlets are respectively corresponding to different slag flushing grooves, different slag outlets discharge slag in turn, when a certain slag outlet discharges slag, a first control valve on a branch inlet pipe and a second control valve on a branch outlet pipe corresponding to the slag outlet are both opened, while a first control valve on a branch inlet pipe and a second control valve on a branch outlet pipe corresponding to other slag outlets which do not discharge slag are both closed, the opening and closing of the first control valve and the second control valve on different branches are switched according to whether the corresponding slag outlet discharges slag, and then the continuous collection of the heat of flushing slag steam is realized; meanwhile, the evaporator is arranged in the slag flushing groove and can directly exchange heat with the slag flushing steam, so that the heat of the slag flushing steam is more sufficiently collected, and the energy loss of the slag flushing steam in the pipeline conveying process is avoided. This application has realized the make full use of to dashing the sediment waste heat, through waste heat production electric energy, can recycle in the production link of mill, brings higher production value for the enterprise, can also effectively avoid the discontinuous problem of heat source supply to exert an influence to power generation system.
Drawings
Fig. 1 is a schematic structural diagram of a slag flushing waste heat power generation system provided by an embodiment of the utility model.
Description of reference numerals:
1. a slag flushing groove;
2. an evaporator; 210. a housing; 220. working medium;
3. an ORC generator;
4. a working medium pump;
5. branch inlet pipe;
6. a first control valve;
7. a branch outlet pipe;
8. a second control valve;
9. a gas-liquid separator;
10. a condenser.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, a slag flushing waste heat power generation system provided by the present invention will be described. The slag flushing waste heat power generation system comprises a slag flushing groove 1, an evaporator 2, an ORC generator 3 and a working medium pump 4; the slag flushing grooves 1 and the evaporators 2 are respectively provided with a plurality of the evaporators 2, and at least part of the evaporators 2 are accommodated in the corresponding slag flushing grooves 1; the ORC generator 3 is provided with a working medium inlet and a working medium outlet; the working medium inlet is respectively communicated with the outlets of the evaporators 2 through a plurality of branch inlet pipes 5, and each branch inlet pipe 5 is provided with a first control valve 6; working medium outlet department is equipped with working medium pump 4, and the export of working medium pump communicates with the import of a plurality of evaporimeters 2 respectively through a plurality of branch exit pipes 7, and every branch exit pipe 7 all is equipped with second control valve 8.
Compared with the prior art, the slag flushing waste heat power generation system provided by the embodiment has the advantages that one blast furnace is generally provided with a plurality of slag outlets, different slag outlets are respectively corresponding to different slag flushing grooves 1, different slag outlets discharge slag in turn, when a certain slag outlet discharges slag, the first control valve 6 on the branch inlet pipe 5 and the second control valve 8 on the branch outlet pipe 7 corresponding to the slag outlet are both opened, the first control valve 6 on the branch inlet pipe 5 and the second control valve 8 on the branch outlet pipe 7 corresponding to other slag outlets which do not discharge slag are both closed, the opening and closing of the first control valve 6 and the second control valve 8 on different branches are switched according to whether the corresponding slag outlet discharges slag, and then the continuous collection of slag flushing steam heat is realized; meanwhile, the evaporator 2 is arranged in the slag flushing groove 1, and can directly exchange heat with the slag flushing steam, so that the heat of the slag flushing steam is more sufficiently collected, and the energy loss of the slag flushing steam in the pipeline conveying process is avoided. This application makes evaporimeter 2 be independent of ORC generator 3, through utilizing the working medium that can evaporate under the low temperature state as the power generation working medium, through drawing the energy of low temperature heat source with working medium gasification, and then drive ORC generator 3 and generate electricity, realized the make full use of towards the sediment waste heat, produce the electric energy through the waste heat, can recycle in the production link of mill, bring higher production value for the enterprise, can also effectively avoid the heat source to supply with discontinuous problem and produce the influence to power generation system.
During specific implementation, the slag flushing groove 1 is a rectangular groove body, the length of the slag flushing groove is about dozens of meters, a chimney or a pipeline capable of leading out steam is arranged in the middle of the slag flushing groove 1, at least part of the evaporator 2 is positioned below the upper end face of the slag flushing groove 1 and can also be completely arranged in the slag flushing groove 1, heat of slag flushing steam can be fully absorbed, and the only limitation is not made. During specific use, the iron slag firstly enters the slag flushing groove 1 after flowing out of the slag outlet of the blast furnace, and the iron slag gradually becomes powdery in the process of the slag flushing groove 1, and simultaneously generates slag flushing steam, and finally the powdery iron slag is flushed into the slag flushing pool.
In the present embodiment, the slag flushing tank 1 and the evaporator 2 are respectively exemplarily shown as two, and taking this embodiment as an example, the using process of the slag flushing waste heat power generation system of the present application is roughly:
1) if the slag hole corresponding to the left slag flushing groove 1 is used for discharging slag, and the slag hole corresponding to the right slag flushing groove 1 is not used for discharging slag, the first control valve 6 and the second control valve 8 on the left side are controlled to be opened, and the first control valve 6 and the second control valve 8 on the right side are controlled to be closed;
2) the gasified working medium 220 enters the left branch inlet pipe 5 from the evaporator 2 and then enters the ORC generator 3 for power generation;
3) after flowing out of the ORC generator 3, the working medium 220 flows back into the evaporator through the branch outlet pipe 7 to form circulation;
4) after the left slag hole runs for a period of time, the slag hole is closed, the right slag hole is opened, the first control valve 6 and the second control valve 8 on the left side are controlled to be closed, the first control valve 6 and the second control valve 8 on the left side are controlled to be opened at the same time, and the steps 2) to 3) are repeated.
In some embodiments, referring to FIG. 1, evaporator 2 comprises a housing 210, working fluid 220 contained within housing 210, housing 210 defining an inlet and an outlet for working fluid 220 to pass through. Working medium 220 can be selected from organic working medium with lower boiling point, working medium 220 is sealed in shell 210, and heat requirement for gasification is not large. The embodiment simplifies the structure of the evaporator 2, so that the working medium 220 can more fully perform heat exchange with slag flushing steam, and the heat exchange efficiency is improved.
In some embodiments, the outlet on the housing 210 is near the top of the housing 210, which is primarily used to allow the vaporized working medium 220 to enter the branch inlet pipe 5; the inlet on the housing 210 may be arranged near the top or the bottom of the housing 210, and the arrangement position is relatively free, and the working medium 220 mainly used in the liquid state flows back into the housing 210 from the branch outlet pipe 7.
On the basis of the above-described embodiment, in order to prevent the liquid working medium inside the casing 210 from flowing back into the branch outlet pipe 7, a check valve may be provided at the inlet of the casing 210, or the inlet may be provided at the top of the casing 210.
In some embodiments, referring to fig. 1, the housing 210 is a flat housing. Due to the flat design, the contact area between the shell 210 and the slag flushing steam is increased to the greatest extent, and the heat exchange efficiency between the working medium 220 and the slag flushing steam is improved; meanwhile, the space occupied by the slag flushing tank 1 can be reduced by compressing the vertical size, so that the evaporator 2 is convenient to install in the slag flushing tank 1.
In some embodiments, referring to fig. 1, in order to avoid liquid entering the ORC generator 3 for improved power generation efficiency, a gas-liquid separator 9 is provided at the working fluid inlet. The liquid intercepted by the gas-liquid separator 9 can be recycled to a designated container for use only and reused, thereby avoiding resource waste.
In specific implementation, the gas-liquid separator 9 is a baffled separator or a wire-mesh filtering separator. It is to be understood that the gas-liquid separator 9 may be any other type of separator that meets the performance requirements, and is not shown.
In some embodiments, referring to fig. 1, a condenser 10 is provided between the working fluid pump 4 and the working fluid outlet. By providing the condenser 10, the working fluid 220 exiting the ORC generator 3 can be cooled, returned to a liquid state again and returned to the interior of the housing 210 for the next cycle.
In a specific embodiment, the condenser 10 is a shell and tube condenser. It should be understood that the condenser 10 may be other types of condensers that meet the performance requirements, and are not listed here.
In some embodiments, in order to control the on and off of the branch inlet pipe 5 and the branch outlet pipe 7 conveniently, the first control valve 6 and the second control valve 8 are electromagnetic valves, and the on and off control can be realized through the communication connection with the control module, so that the automation and the intelligent degree of operation are improved, and the labor intensity of operators is reduced.
In some embodiments, referring to fig. 1, the internal diameter of the branch inlet pipe 5 is smaller than the internal diameter of the branch outlet pipe 7. In the embodiment, a thin pipeline is adopted to realize the circulation of the gasified working medium 220, so that the gas can ensure a certain air pressure, and the blades of the steam turbine can be pushed to rotate conveniently; the circulation of the liquid working medium 220 is realized through a thick pipeline, and the smoothness of the circulation is improved.
In some embodiments, to avoid excessive heat loss during the transportation of the gaseous working medium 220, the branch inlet pipe 5 is covered with an insulating layer.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a towards sediment waste heat power generation system which characterized in that includes:
the device comprises a slag flushing tank, an evaporator, an ORC generator and a working medium pump;
the slag flushing grooves and the evaporators are respectively provided with a plurality of grooves, and at least part of the evaporators are accommodated in the corresponding slag flushing grooves;
the ORC generator is provided with a working medium inlet and a working medium outlet;
the working medium inlet is respectively communicated with outlets of the evaporators through a plurality of branch inlet pipes, and each branch inlet pipe is provided with a first control valve;
the working medium outlet is provided with a working medium pump, the outlet of the working medium pump is respectively communicated with the inlets of the plurality of evaporators through a plurality of branch outlet pipes, and each branch outlet pipe is provided with a second control valve.
2. The slag flushing waste heat power generation system of claim 1, wherein the evaporator comprises a housing, the housing containing a working medium therein, the housing defining an inlet and an outlet for the working medium to pass through.
3. The slag washing waste heat power generation system of claim 2, wherein the outer shell is a flat shell.
4. The slag washing waste heat power generation system of claim 1, wherein a gas-liquid separator is arranged at the working medium inlet.
5. The slag washing waste heat power generation system of claim 4, wherein the gas-liquid separator is a baffled separator or a wire-mesh filter separator.
6. The slag flushing waste heat power generation system of claim 1, wherein a condenser is arranged between the working medium pump and the working medium outlet.
7. The slag washing waste heat power generation system of claim 6, wherein the condenser is a shell and tube condenser.
8. The slag washing waste heat power generation system of claim 1, wherein the first control valve and the second control valve are both solenoid valves.
9. The slag washing waste heat power generation system of claim 1, wherein the inner diameter of the branch inlet pipe is smaller than the inner diameter of the branch outlet pipe.
10. The slag flushing waste heat power generation system of claim 1, wherein an insulating layer is wrapped outside the branch inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383334.1U CN216665701U (en) | 2022-02-23 | 2022-02-23 | Slag flushing waste heat power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383334.1U CN216665701U (en) | 2022-02-23 | 2022-02-23 | Slag flushing waste heat power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216665701U true CN216665701U (en) | 2022-06-03 |
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ID=81764954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220383334.1U Active CN216665701U (en) | 2022-02-23 | 2022-02-23 | Slag flushing waste heat power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216665701U (en) |
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2022
- 2022-02-23 CN CN202220383334.1U patent/CN216665701U/en active Active
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