CN220670237U - Utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water - Google Patents
Utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water Download PDFInfo
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- CN220670237U CN220670237U CN202322368095.XU CN202322368095U CN220670237U CN 220670237 U CN220670237 U CN 220670237U CN 202322368095 U CN202322368095 U CN 202322368095U CN 220670237 U CN220670237 U CN 220670237U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 240
- 239000002893 slag Substances 0.000 title claims abstract description 118
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 44
- 239000002918 waste heat Substances 0.000 title claims abstract description 20
- 239000008236 heating water Substances 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water, which comprises a blast furnace slag flushing water main pipeline, a drainage pipeline, a slag water return pipeline, a slag water pump, a slag water reversing valve group, a heat exchanger, a return pipeline, a hot water circulating pump, a refrigerator subsystem, a cold and hot water reversing valve group, a cold water valve group, a hot water valve group, a cold water circulating pump and a cold and hot water main pipeline; the slag water pool mechanism is connected with the water outlet of the slag channel and comprises two stages of slag water pool units which are connected in parallel, the slag water pump takes water from the slag water pool unit positioned at the rear side through the slag water main pipeline, and the slag water returns to the reservoir through the return pipeline after heat exchange of the heat exchanger. The hot water system is connected with the hot water circulating pump, the cold water reversing valve group, the cold water valve group and the hot water valve group. The hot water generated after the heat exchanger is heated is effectively utilized by utilizing the cold and hot water reversing valve group, the cold water valve group, the hot water valve group and the refrigerating system, and the waste heat of slag flushing water of a blast furnace and the heating water pipe network are utilized to realize the waste heat and cold heat combined supply.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery systems of blast furnace slag flushing water by a bottom filtering method, in particular to a utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water.
Background
The blast furnace ironmaking slag generates a large amount of slag flushing water with the temperature of 70-85 ℃ after water quenching, contains huge heat, and is widely used for recycling waste heat of slag flushing water in domestic and foreign iron and steel enterprises at present, but has the characteristics of low temperature of slag flushing water in summer, large amount of solid particles, mineral fibers, intermittent production and the like, so that the heat of slag flushing water is difficult to recycle.
Disclosure of Invention
The utility model aims to provide a utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water comprises a main blast furnace slag flushing water pipeline, a drainage pipeline, a slag water backflow pipeline, a slag water pump, a slag water reversing valve group, a heat exchanger, a backflow pipeline, a hot water circulating pump, a refrigerator subsystem, a cold and hot water reversing valve group, a cold water valve group, a hot water valve group, a cold water circulating pump and a cold and hot water main pipeline; the slag water pool mechanism is connected with the water outlet of the slag channel and comprises two stages of slag water pool units which are connected in parallel, the slag water pump takes water from the slag water pool unit positioned at the rear side through the slag water main pipeline, and the slag water returns to the reservoir through the return pipeline after heat exchange of the heat exchanger. The hot water system respectively and intensively sends cold water and hot water to a pipe network through a hot water circulating pump, a cold water and hot water reversing valve group, a cold water valve group and a hot water valve group.
Further, a main pipeline gate valve for blocking water flow is arranged on the main pipeline of the blast furnace slag flushing water.
Further, one end of the drainage pipeline is communicated with the blast furnace slag flushing water main pipeline at the upstream of the main pipeline gate valve, and the other end of the drainage pipeline is communicated with the outlet of the slag water pump.
Further, the slag water reversing valve group comprises a first valve, a second valve, a third valve, a drainage pipeline, an upper tower pipeline and a slag water backflow pipeline; the first valve, the second valve and the third valve are connected in series on the main slag water pipeline, the first valve is communicated with the main slag water pipeline, the second valve is communicated with the upper tower pipeline, the third valve is communicated with the slag water reflux pipeline, and the outlet of the slag water pump is communicated with the upstream of the gate valve of the first valve.
Further, the heat exchanger comprises a slag flushing water interface A and a slag flushing water interface B; the slag flushing water interface A of the heat exchanger is connected with the water diversion pipeline, and the slag flushing water interface B is connected with the backflow pipeline.
Further, the cold and hot water reversing valve group comprises: the heating water pipe network is divided into a cold water end and a hot water end by the cold and hot water cut-off valve, the cold water valve group and the hot water valve group by the cold and hot water cut-off valve, and the cold and hot water cut-off valve and the hot water valve group are controlled by the cold water valve group and the hot water valve group respectively.
Compared with the prior art, the utility model has the following beneficial effects:
the hot water generated after the heat exchanger 7 is heated is effectively utilized by utilizing the cold and hot water reversing valve group 9, the cold water valve group 11, the hot water valve group 12 and the refrigerating system, and the waste heat and cold water combined supply of the waste heat is realized by effectively utilizing the waste heat of the slag flushing water of the blast furnace and the heating water pipe network.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water.
Reference numerals:
1. a blast furnace; 2. slag channel; 3. a slag pool; 4. slag water pump; 5. a reservoir; 6. a water diversion gate valve; 7. a heat exchanger; 8. a hot water circulation pump; 9. cold and hot water reversing valve group; 10. a pipe network; 11. a cold water valve group; 12. a hot water valve group; 13. a refrigerating machine; 14. a cooling water pump; 15. a refrigeration cooling tower; 16. and a slag water cooling tower.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms of "top", "bottom", "one side", "the other side", "front", "rear", "middle portion", "inner", "top", "bottom", etc., are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a system for realizing cold and hot combined supply of waste heat of slag flushing water of a blast furnace according to an embodiment of the utility model comprises a main slag flushing water pipeline, a drainage pipeline, a slag water return pipeline, a slag water pump, a slag water reversing valve group, a heat exchanger, a return pipeline, a hot water circulating pump, a refrigerator subsystem, a cold water reversing valve group, a cold water valve group, a hot water valve group, a cold water circulating pump and a cold water main pipeline; the slag water pool mechanism is connected with the water outlet of the slag channel and comprises two stages of slag water pool units which are connected in parallel, the slag water pump takes water from the slag water pool unit positioned at the rear side through the slag water main pipeline, and the slag water returns to the reservoir through the return pipeline after heat exchange of the heat exchanger. The hot water system respectively and intensively sends cold water and hot water to a pipe network through a hot water circulating pump, a cold water and hot water reversing valve group, a cold water valve group and a hot water valve group.
According to the scheme, a main pipeline gate valve for blocking water flow is arranged on a main pipeline of blast furnace slag flushing water, one end of a drainage pipeline is communicated with the main pipeline gate valve of blast furnace slag flushing water at the upstream of the main pipeline gate valve, the other end of the drainage pipeline is communicated with an outlet of a slag water pump, a slag water reversing valve group comprises a first valve, a second valve, a third valve, a drainage pipeline, an upper tower pipeline and a slag water backflow pipeline, the first valve, the second valve and the third valve are connected in series on the main pipeline of slag water, the first valve is communicated with the main pipeline of slag water, the second valve is communicated with the upper tower pipeline, the third valve is communicated with the slag water backflow pipeline, the outlet of the slag water pump is communicated with the gate valve at the upstream of the first valve, a slag flushing water interface A and a slag flushing water interface B are arranged on the heat exchanger, the slag flushing water interface A is connected with the water diversion pipeline, the slag flushing water interface B is connected with the backflow pipeline, and the slag water reversing valve group comprises: the heating water pipe network is divided into a cold water end and a hot water end by the cold and hot water cut-off valve, the cold water valve group and the hot water valve group by the cold and hot water cut-off valve, and the cold and hot water cut-off valve and the hot water valve group are controlled by the cold water valve group and the hot water valve group respectively.
Working principle:
after the blast furnace 1 is used for flushing slag, slag water enters a slag water tank 3 through a slag channel 2, slag water in the slag water tank 3 enters a heat exchanger 7 through a slag water pump 4 and a water diversion gate valve 6 to exchange heat with hot water, and the slag water enters a reservoir 5 through a return pipeline after heat exchange is completed; after the hot water is heated by the heat exchanger 7 under the heating condition in winter, the hot water is sent to the pipe network 10 through the hot water circulating pump 8, the cold and hot water reversing valve group 9, the cold water valve group 11 and the hot water valve group 12, the valve group 9 is opened under the heating condition, and the valve group 11 and the valve group 12 are closed; in summer, after the hot water is heated by the heat exchanger 7 under the refrigeration working condition, the hot water is sent to the refrigerator 13 through the hot water circulating pump 8, the cold and hot water reversing valve group 9 and the hot water valve group 12, the hot water generates cold water after working in the refrigerator through the cooling water pump 14 and the cooling tower 15, the cold water is sent to the pipe network 10 through the cold water circulating pump 17 and the cold water valve group 11, the valve group 9 is closed under the refrigeration working condition, and the valve group 11 and the valve group 12 are opened.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-described embodiment, but may be modified or substituted for some of the technical features described in the above-described embodiments by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The system is characterized by comprising a main blast furnace slag flushing water pipeline, a drainage pipeline, a slag water return pipeline, a slag water pump, a slag water reversing valve group, a heat exchanger, a return pipeline, a hot water circulating pump, a refrigerating subsystem, a cold water reversing valve group, a cold water valve group, a hot water valve group, a cold water circulating pump and a cold water main pipeline; the slag water pool mechanism is connected with the water outlet of the slag channel, the slag water pool mechanism comprises two stages of slag water pool units which are connected in parallel, the slag water pump takes water from the slag water pool units positioned at the rear side through a slag water main pipeline, slag water returns to the reservoir through a return pipeline after heat exchange of the heat exchanger, and the hot water system respectively and intensively sends cold water and hot water to the pipe network through a hot water circulating pump, a cold water and hot water reversing valve group, a cold water valve group and a hot water valve group.
2. The system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water according to claim 1, wherein a main pipeline gate valve for blocking water flow is arranged on the main pipeline of the blast furnace slag flushing water.
3. The system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water according to claim 1, wherein one end of the drainage pipeline is communicated with a main pipeline of the blast furnace slag flushing water at the upstream of a gate valve of the main pipeline, and the other end of the drainage pipeline is communicated with an outlet of the slag flushing pump.
4. The system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water according to claim 1, wherein the slag water reversing valve group comprises a valve I, a valve II, a valve III, a drainage pipeline, an upper tower pipeline and a slag water reflux pipeline; the first valve, the second valve and the third valve are connected in series on the main slag water pipeline, the first valve is communicated with the main slag water pipeline, the second valve is communicated with the upper tower pipeline, the third valve is communicated with the slag water reflux pipeline, and the outlet of the slag water pump is communicated with the upstream of the gate valve of the first valve.
5. The system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water according to claim 1, wherein the heat exchanger comprises a slag flushing water interface A and a slag flushing water interface B, wherein the slag flushing water interface A of the heat exchanger is connected with a water diversion pipeline, and the slag flushing water interface B is connected with a backflow pipeline.
6. The system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water according to claim 1, wherein the cold and hot water reversing valve group comprises: the heating water pipe network is divided into a cold water end and a hot water end by the cold and hot water cut-off valve, the cold water valve group and the hot water valve group by the cold and hot water cut-off valve, and the cold and hot water cut-off valve and the hot water valve group are controlled by the cold water valve group and the hot water valve group respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322368095.XU CN220670237U (en) | 2023-08-31 | 2023-08-31 | Utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322368095.XU CN220670237U (en) | 2023-08-31 | 2023-08-31 | Utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220670237U true CN220670237U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322368095.XU Active CN220670237U (en) | 2023-08-31 | 2023-08-31 | Utilization system for realizing cold and hot combined supply of waste heat of blast furnace slag flushing water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220670237U (en) |
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2023
- 2023-08-31 CN CN202322368095.XU patent/CN220670237U/en active Active
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