CN214115606U - Converter evaporative cooler flue gas waste heat recovery system - Google Patents
Converter evaporative cooler flue gas waste heat recovery system Download PDFInfo
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- CN214115606U CN214115606U CN202023208918.5U CN202023208918U CN214115606U CN 214115606 U CN214115606 U CN 214115606U CN 202023208918 U CN202023208918 U CN 202023208918U CN 214115606 U CN214115606 U CN 214115606U
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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
本实用新型涉及一种转炉蒸发冷却器烟气余热回收系统，属于能源回收利用技术领域。技术方案是：蒸发冷却器（1）上设有多个安装孔，多个换热器安装座（3）分别通过安装孔设置在蒸发冷却器（1）外壁上；多个插入式换热器（2）通过各自的换热器安装座插入到蒸发冷却器内；汽包（10）通过循环水泵（16）及供水管道（18）与分水包（7）连接，分水包通过多根换热器给水管道（4）分别与多个插入式换热器（2）连接；多个插入式换热器的回水管道（6）并联后通过回水总管（8）与汽包连接，汽包顶部设有蒸汽输出管（11）与用热系统连接。本实用新型不仅回收了转炉蒸发冷却器烟气余热资源，而且减少使用降温所需的水，实现能源回收和节约。
The utility model relates to a flue gas waste heat recovery system of a converter evaporative cooler, which belongs to the technical field of energy recovery and utilization. The technical solution is as follows: the evaporative cooler (1) is provided with a plurality of installation holes, and the plurality of heat exchanger mounting seats (3) are respectively arranged on the outer wall of the evaporative cooler (1) through the installation holes; a plurality of plug-in heat exchangers (2) Insert into the evaporative cooler through their respective heat exchanger mounting seats; the steam drum (10) is connected to the water distribution drum (7) through the circulating water pump (16) and the water supply pipe (18), and the water distribution drum passes through a plurality of The heat exchanger water supply pipes (4) are respectively connected with the plurality of plug-in heat exchangers (2); the return water pipes (6) of the plurality of plug-in heat exchangers are connected in parallel with the steam drum through the return water main pipe (8), The top of the steam drum is provided with a steam output pipe (11) to be connected with the heating system. The utility model not only recovers the waste heat resources of the flue gas of the converter evaporative cooler, but also reduces the use of water required for cooling, thereby realizing energy recovery and saving.
Description
Technical Field
The utility model relates to a converter evaporative cooler flue gas waste heat recovery system belongs to energy recovery and utilization technical field.
Background
The converter flue gas mainly comes from a large amount of gas generated by carbon oxidation in molten iron in the converter blowing process, and a large amount of dust is mixed in the gas. The high-temperature flue gas at the outlet of the blast furnace contains 50-70% of CO, and the flue gas carries a large amount of latent heat and sensible heat, and the temperature of the flue gas reaches 1450-1600 ℃. The flue gas is firstly collected by the movable smoke hood, and then the heat energy is recovered through the gasification cooling flue, and the temperature is primarily reduced. The temperature of the outlet of the gasification cooling flue is about 800-1000 ℃. Then the flue gas enters an evaporative cooler, and the secondary cooling of the flue gas is carried out by adopting an evaporative cooling mode, and meanwhile, coarse-particle dust is collected. In the process of evaporative cooling, a proper amount of water is sprayed, and the sprayed water is completely evaporated through interlocking control, so that the effects of cooling and tempering the flue gas are achieved, and the preparation is made for subsequent dust removal.
The flue gas waste heat in the evaporative cooler is directly absorbed through the mode of water spray evaporation, has wasted the water resource on the one hand, and on the other hand causes thermal waste. How to cool the flue gas in the evaporative cooling flue, absorb the part of waste heat and reduce the consumption of evaporative cooling water becomes the problem to be solved in the field at present.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a converter evaporative cooler flue gas waste heat recovery system installs a plurality of bayonet heat exchangers with the evaporative cooler, through circulating water pump with water leading-in to bayonet heat exchanger, the circulating water absorbs the heat in bayonet heat exchanger, forms the steam-water mixture, accomplishes the steam-water separation through the steam pocket again, forms the 1MPa steam that is used for the electricity generation, reaches the purpose of energy recovery, reducible evaporative cooling water consumption realizes the using water wisely, has solved the problem that exists among the background art.
The technical scheme of the utility model is that:
a converter evaporative cooler flue gas waste heat recovery system comprises an evaporative cooler, a plug-in heat exchanger, heat exchanger mounting seats, a heat exchanger water supply pipeline, a water return pipeline, a water distribution drum, a water return header pipe, a steam drum, a steam output pipe, a desalination and oxygen removal water tank, a steam drum water supply pump, a steam drum water pipe, a circulating water pump and a water supply pipeline, wherein the evaporative cooler is provided with a plurality of mounting holes, and the heat exchanger mounting seats are respectively arranged on the outer wall of the evaporative cooler through the mounting holes; the plurality of plug-in heat exchangers are inserted into the evaporative cooler through respective heat exchanger mounting seats; the steam pocket is connected with a water distribution pocket through a circulating water pump and a water supply pipeline, and the water distribution pocket is respectively connected with a plurality of plug-in heat exchangers through a plurality of heat exchanger water supply pipelines; the water return pipelines of the plurality of inserted heat exchangers are connected in parallel and then are connected with the steam drum through a water return main pipe, and the top of the steam drum is provided with a steam output pipe which is connected with a heat utilization system; the desalting and deoxidizing water tank is connected with the steam pocket through a steam pocket water replenishing pump and a steam pocket water pipe.
The heat exchanger mounting seat comprises a mounting seat flange, a mounting seat barrel, a mounting seat sealing plate and a mounting seat sealing ring, the mounting seat barrel is welded on the evaporative cooler, and the mounting seat flange is arranged on the mounting seat barrel; an annular mounting seat sealing plate is arranged in the mounting seat barrel, and a mounting seat sealing ring is welded on the mounting seat sealing plate; the plug-in heat exchanger is inserted into the evaporative cooler after penetrating through the mounting seat cylinder.
The plug-in heat exchanger comprises a plug-in heat exchanger inlet, a plug-in heat exchanger outlet, a heat exchanger flange, heat exchanger pipelines, heat exchanger sealing discs, inner sealing rings, outer sealing rings and fireproof sealing mud, the plug-in heat exchanger is formed by connecting a plurality of heat exchanger pipelines, and the end parts of the first heat exchanger pipeline and the last heat exchanger pipeline are respectively provided with the plug-in heat exchanger inlet and the plug-in heat exchanger outlet; a plurality of holes are uniformly formed in the heat exchanger sealing disc, a heat exchanger pipeline is welded with the heat exchanger sealing disc through the holes, and the heat exchanger sealing disc is arranged in the mounting seat barrel; a heat exchanger flange at one end of the plug-in heat exchanger and a mounting seat flange of a heat exchanger mounting seat are fixedly connected through bolts, and the other end of the plug-in heat exchanger penetrates through a heat exchanger sealing disc, a mounting seat sealing plate and a mounting hole in sequence and is inserted into the evaporative cooler; an inner sealing ring and an outer sealing ring are arranged on a sealing disc of the heat exchanger, the inner sealing ring, a mounting seat sealing ring and the outer sealing ring are sequentially arranged between the sealing disc of the heat exchanger and a sealing plate of the mounting seat from inside to outside, fireproof sealing mud is filled between the inner sealing ring and the outer sealing ring, and the mounting seat sealing ring is embedded into the fireproof sealing mud to form sealing and prevent smoke gas from leaking; the water supply pipeline of the heat exchanger is connected with the inlet of the plug-in heat exchanger, and the outlet of the plug-in heat exchanger is connected with the water return pipeline.
The inner diameter of the annular mounting seat sealing plate is matched with the plug-in heat exchanger, and the outer diameter of the annular mounting seat sealing plate is matched with the inner diameter of the mounting seat barrel.
The outer wall middle part of mount pad barrel is equipped with nitrogen gas main entrance, when changing the installation bayonet heat exchanger, blows in nitrogen gas, forms the air curtain, reaches the purpose that the prevention and cure flue gas revealed.
And a plurality of water supply pipelines of the heat exchangers are provided with a first valve, and a water return main pipe is provided with a second valve.
A first check valve is arranged between the steam pocket water replenishing pump and the steam pocket; a check valve II is arranged between the circulating water pump and the water distribution bag; and a check valve III is arranged on a water supply pipeline of the heat exchanger to prevent backflow.
The circulating water pump pumps water in the steam pocket into the water distribution pocket through the check valve II, the water distribution pocket is connected with the inlet of the plug-in heat exchanger of the plug-in heat exchangers through the water supply pipelines of the heat exchangers, desalted and deaerated water enters the water supply pipelines of the heat exchangers through the water distribution pocket respectively and then enters the plug-in heat exchangers, water entering the plug-in heat exchangers absorbs heat to form a steam-water mixture, the steam-water mixture flows out of the outlet of the plug-in heat exchanger and is gathered into a water return header pipe through the water return pipelines, the steam-water mixture flows through the valve II to enter the steam pocket, steam-water separation is completed in the steam pocket to form 1MPa steam, and the steam is sent out through the steam output pipe to be used for power generation.
The steam pocket sets up liquid level control, when being less than the setting water level, the steam pocket moisturizing water pump goes into the steam pocket water pipe with the demineralized deoxidization water in the demineralized deoxidization water pitcher through check valve one pump, for the steam pocket moisturizing.
The circulating water pump is a variable frequency water pump, and can be matched with the temperature period of the gasification cooling flue of the converter to adjust the water quantity, so that the water quantity entering the plug-in heat exchanger is kept in a reasonable range.
The heat exchanger pipeline is made of high-temperature-resistant alloy steel, is a known common structure, is inserted into the ascending pipe for direct heat exchange, has large heat extraction capacity, and completely meets the process requirement.
The utility model has the advantages that: not only the flue gas waste heat resource of the converter evaporative cooler is recovered, but also the water required by cooling is reduced, and the energy recovery and saving are realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the installation structure of the plug-in heat exchanger 2 of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is a schematic view taken along line A-A of FIG. 3;
in the figure: the device comprises an evaporative cooler 1, an inserted heat exchanger 2, an inserted heat exchanger inlet 201, an inserted heat exchanger outlet 202, a heat exchanger flange 203, a heat exchanger pipeline 204, a heat exchanger sealing disc 205, an inner sealing ring 206, an outer sealing ring 207, fireproof sealing mud 208, a heat exchanger mounting seat 3, a mounting seat flange 301, a mounting seat cylinder 302, a nitrogen main inlet 303, a mounting seat sealing plate 304, a mounting seat sealing ring 305, a heat exchanger water supply pipeline 4, a valve I5, a water return pipeline 6, a water diversion package 7, a water return main pipe 8, a valve II 9, a steam package 10, a steam output pipe 11, a desalted water tank deoxygenation 12, a steam package water supply pump 13, a check valve I14, a steam package water pipe 15, a circulating water pump 16, a check valve II 17, a water supply pipeline 18 and a check valve III 19.
Detailed Description
The present invention will be further described with reference to the accompanying drawings by way of examples.
A converter evaporative cooler flue gas waste heat recovery system comprises an evaporative cooler 1, a plug-in heat exchanger 2, heat exchanger mounting seats 3, a heat exchanger water supply pipeline 4, a water return pipeline 6, a water distribution bag 7, a water return header pipe 8, a steam pocket 10, a steam output pipe 11, a desalination and oxygen removal water tank 12, a steam pocket water supply water pump 13, a steam pocket water pipe 15, a circulating water pump 16 and a water supply pipeline 18, wherein a plurality of mounting holes are formed in the evaporative cooler 1, and the heat exchanger mounting seats 3 are respectively arranged on the outer wall of the evaporative cooler 1 through the mounting holes; a plurality of plug-in heat exchangers 2 are inserted into the evaporative cooler 1 through respective heat exchanger mounting seats 3; the steam pocket 10 is connected with a water distribution pocket 7 through a circulating water pump 16 and a water supply pipeline 18, and the water distribution pocket 7 is respectively connected with a plurality of plug-in heat exchangers 2 through a plurality of heat exchanger water supply pipelines 4; the water return pipelines 6 of the plurality of inserted heat exchangers 2 are connected in parallel and then are connected with a steam drum 10 through a water return header pipe 8, and the top of the steam drum 10 is provided with a steam output pipe 11 which is connected with a heat utilization system; the desalting and deoxidizing water tank 12 is connected with the steam drum 10 through a steam drum water replenishing pump 13 and a steam drum water pipe 15.
The heat exchanger mounting seat 3 comprises a mounting seat flange 301, a mounting seat cylinder 302, a mounting seat sealing plate 304 and a mounting seat sealing ring 305, the mounting seat cylinder 302 is welded on the evaporative cooler 1, and the mounting seat flange 301 is arranged on the mounting seat cylinder 302; an annular mounting seat sealing plate 304 is arranged in the mounting seat barrel 302, and a mounting seat sealing ring 305 is welded on the mounting seat sealing plate 304; the plug-in heat exchanger 2 is inserted into the evaporative cooler 1 after passing through the mount barrel 302.
The plug-in heat exchanger 2 comprises a plug-in heat exchanger inlet 201, a plug-in heat exchanger outlet 202, a heat exchanger flange 203, heat exchanger pipelines 204, a heat exchanger sealing disc 205, an inner sealing ring 206, an outer sealing ring 207 and fireproof sealing mud 208, the plug-in heat exchanger 2 is formed by connecting a plurality of heat exchanger pipelines 204, and the end parts of a first heat exchanger pipeline 204 and a last heat exchanger pipeline 204 are respectively provided with the plug-in heat exchanger inlet 201 and the plug-in heat exchanger outlet 202; a plurality of holes are uniformly formed in the heat exchanger sealing disc 205, heat exchanger pipelines 204 are welded with the heat exchanger sealing disc 205 through the holes, and the heat exchanger sealing disc 205 is arranged in the mounting seat cylinder 302; the heat exchanger flange 203 at one end of the plug-in heat exchanger 2 is fixedly connected with the mounting seat flange 301 of the heat exchanger mounting seat 3 through bolts, and the other end of the plug-in heat exchanger passes through the heat exchanger sealing disc 205, the mounting seat sealing plate 304 and the mounting hole in sequence and is inserted into the evaporative cooler 1; an inner sealing ring 206 and an outer sealing ring 207 are arranged on the heat exchanger sealing disc 205, the inner sealing ring 206, the mounting seat sealing ring 305 and the outer sealing ring 207 are sequentially arranged between the heat exchanger sealing disc 205 and the mounting seat sealing plate 304 from inside to outside, fireproof sealing mud 208 is filled between the inner sealing ring 206 and the outer sealing ring 207, and the mounting seat sealing ring 305 is embedded into the fireproof sealing mud 208 to form sealing and prevent flue gas leakage; the heat exchanger water supply pipeline 4 is connected with the inlet 201 of the plug-in heat exchanger, and the outlet 202 of the plug-in heat exchanger is connected with the water return pipeline 6.
The annular mounting seat sealing plate 304 has an inner diameter matched with the plug-in heat exchanger 2 and an outer diameter matched with the inner diameter of the mounting seat cylinder 302.
The middle part of the outer wall of the mounting seat cylinder 302 is provided with a nitrogen main inlet 303, and when the plug-in heat exchanger 2 is replaced and installed, nitrogen is blown in to form an air curtain, so that the purpose of preventing and treating flue gas leakage is achieved.
And a plurality of first valves 5 are arranged on the water supply pipelines 4 of the heat exchangers, and a second valve 9 is arranged on the water return header pipe 8.
A first check valve 14 is arranged between the steam drum water replenishing pump 13 and the steam drum 10; a second check valve 17 is arranged between the circulating water pump 16 and the water diversion bag 7; and a check valve III 19 is arranged on the water supply pipeline 4 of the heat exchanger to prevent backflow.
In the embodiment, water in the steam pocket 10 is pumped into the water dividing pocket by the circulating water pump 16 through the check valve II 17, the water dividing pocket 7 is connected with the plug-in heat exchanger inlets 201 of the plug-in heat exchangers 2 through the heat exchanger water supply pipelines 4, desalted and deoxygenated water enters the heat exchanger water supply pipelines 4 through the water dividing pocket 7 respectively and then enters the plug-in heat exchangers 2, water entering the plug-in heat exchangers 2 absorbs heat to form a steam-water mixture, the steam-water mixture flows out of the plug-in heat exchanger outlets 202 and is gathered into the water return main pipe 8 through the water return pipelines 6, the steam-water mixture flows through the valve II 9 to enter the steam pocket 10, steam-water separation is completed in the steam pocket 10, 1MPa steam is formed, and the steam is sent out through the steam output pipe 11 for power generation.
The steam pocket 10 is provided with liquid level control, when the water level is lower than the set water level, the steam pocket water replenishing water pump 13 pumps the desalting and deoxidizing water in the desalting and deoxidizing water tank 12 into the steam pocket water pipe 15 through the check valve I14, and water is replenished to the steam pocket 10.
The circulating water pump 16 is a variable frequency water pump, and can be matched with the temperature period of the gasification cooling flue of the converter to adjust the water quantity, so that the water quantity entering the plug-in heat exchanger is kept in a reasonable range.
The heat exchanger pipe 204 is made of high-temperature-resistant alloy steel, is a known common structure, is inserted into the ascending pipe for direct heat exchange, has large heat extraction capacity, and completely meets the process requirement.
The utility model discloses not only retrieve converter evaporative cooler flue gas waste heat resource, reduced the required water of use cooling moreover, realized energy recovery and saving.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023208918.5U CN214115606U (en) | 2020-12-28 | 2020-12-28 | Converter evaporative cooler flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023208918.5U CN214115606U (en) | 2020-12-28 | 2020-12-28 | Converter evaporative cooler flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214115606U true CN214115606U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023208918.5U Active CN214115606U (en) | 2020-12-28 | 2020-12-28 | Converter evaporative cooler flue gas waste heat recovery system |
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| CN (1) | CN214115606U (en) |
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- 2020-12-28 CN CN202023208918.5U patent/CN214115606U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A waste heat recovery system for converter evaporative cooler flue gas Effective date of registration: 20230424 Granted publication date: 20210903 Pledgee: Bank of Hebei, Tangshan hi tech Zone Science and Technology Branch Pledgor: TANGSHAN BAOKAI TECHNOLOGY CO.,LTD. Registration number: Y2023980039111 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210903 Pledgee: Bank of Hebei, Tangshan hi tech Zone Science and Technology Branch Pledgor: TANGSHAN BAOKAI TECHNOLOGY CO.,LTD. Registration number: Y2023980039111 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A converter evaporative cooler flue gas waste heat recovery system Granted publication date: 20210903 Pledgee: Cangzhou Bank Co.,Ltd. Tangshan Youyi Road Branch Pledgor: TANGSHAN BAOKAI TECHNOLOGY CO.,LTD. Registration number: Y2024980036460 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210903 Pledgee: Cangzhou Bank Co.,Ltd. Tangshan Youyi Road Branch Pledgor: TANGSHAN BAOKAI TECHNOLOGY CO.,LTD. Registration number: Y2024980036460 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A waste heat recovery system for converter evaporative cooler flue gas Granted publication date: 20210903 Pledgee: Cangzhou Bank Co.,Ltd. Tangshan Youyi Road Branch Pledgor: TANGSHAN BAOKAI TECHNOLOGY CO.,LTD. Registration number: Y2025980034989 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |