TWI487792B - Blast Furnace Soft Water Closed Circulating Cooling System - Google Patents
Blast Furnace Soft Water Closed Circulating Cooling System Download PDFInfo
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- TWI487792B TWI487792B TW102135620A TW102135620A TWI487792B TW I487792 B TWI487792 B TW I487792B TW 102135620 A TW102135620 A TW 102135620A TW 102135620 A TW102135620 A TW 102135620A TW I487792 B TWI487792 B TW I487792B
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- soft water
- degassing
- cooling system
- blast furnace
- circulation pump
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- 239000008234 soft water Substances 0.000 title claims description 47
- 238000001816 cooling Methods 0.000 title claims description 43
- 238000007872 degassing Methods 0.000 claims description 32
- 239000011261 inert gas Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
本發明係有關一種循環冷卻系統，更特別有關一種高爐軟水密閉循環冷卻系統。The present invention relates to a circulating cooling system, and more particularly to a blast furnace soft water closed circulation cooling system.
參考第1圖，習知高爐軟水密閉循環冷卻系統100包含有一冷卻元件110、至少一個低壓循環泵120、至少一個高壓循環泵130、一鼓風嘴元件140、一除氣槽150、一膨脹槽160以及一熱交換器170。軟水由低壓循環泵120送出後分成兩路，一路進入冷卻元件110後流出，另一路則經由高壓循環泵130加壓後，進入鼓風嘴元件140後流出，再與前述一路流出冷卻元件110的軟水會合後，一同進入除氣槽150進行除氣。軟水離開除氣槽150後，進入熱交換器170降溫，並利用惰性氣體加壓於膨脹槽160內，例如是氮氣來平衡系統壓力。軟水離開熱交換器170後，再回到低壓循環泵120，完成一個冷卻循環。Referring to FIG. 1 , a conventional blast furnace soft water closed circulation cooling system 100 includes a cooling element 110, at least one low pressure circulation pump 120, at least one high pressure circulation pump 130, a blast nozzle element 140, a deaeration tank 150, and an expansion tank. 160 and a heat exchanger 170. The soft water is sent out by the low-pressure circulation pump 120 and splits into two paths, one enters the cooling element 110 and flows out, and the other is pressurized by the high-pressure circulation pump 130, enters the blast nozzle element 140, and then flows out, and then flows out of the cooling element 110 with the aforementioned one. After the soft water meets, it enters the degassing tank 150 together for degassing. After leaving the degassing tank 150, the soft water enters the heat exchanger 170 to cool down and is pressurized with an inert gas into the expansion tank 160, such as nitrogen, to balance the system pressure. After the soft water leaves the heat exchanger 170, it returns to the low pressure circulation pump 120 to complete a cooling cycle.
由於軟水與冷卻元件110及鼓風嘴元件140進行熱交換時，會因局部溫度過高，造成軟水瞬間沸騰而產生氣泡。另外，在一大氣壓下，也會有氣體溶於軟水中，在進行熱交換時，這些溶於水中的氣體，也會造成氣泡的產生。不論上述何種方式所產生的氣泡，都會在冷卻元件110及鼓風嘴元件140的水道內，形成一似絕緣層的物質，使得整體軟水冷卻系統的效果大幅降低。由於氣泡會堆積在冷卻系統管線的最高處，除氣槽150通常 設置在此位置來排除氣泡。再者，為了使冷卻系統的壓力值維持穩定，且吸收軟水會因溫度變化造成體積膨脹，因此會設置膨脹槽160來解決此一問題。一般而言，除氣槽150與膨脹槽160皆放置在距地面高約40-45公尺處的鋼構平台上。When the soft water exchanges heat with the cooling element 110 and the blast nozzle element 140, the soft water instantaneously boils due to the local temperature being too high, and bubbles are generated. In addition, at a pressure of one atmosphere, there is also a gas dissolved in soft water, and these gases dissolved in water also cause the generation of bubbles during heat exchange. Regardless of the bubble generated in any of the above manners, an insulating layer-like substance is formed in the water passages of the cooling element 110 and the blast nozzle element 140, so that the effect of the overall soft water cooling system is greatly reduced. Since the bubbles will accumulate at the highest point of the cooling system line, the degassing tank 150 is usually Set this position to exclude bubbles. Furthermore, in order to maintain the pressure value of the cooling system stable, and the absorption of soft water causes volume expansion due to temperature changes, the expansion tank 160 is provided to solve this problem. In general, the degassing tank 150 and the expansion tank 160 are placed on a steel platform that is about 40-45 meters above the ground.
然而，前述高爐軟水密閉循環冷卻系統具有下列的缺點：1.需要設置獨立的除氣槽與膨脹槽；2.管線匯流入除氣槽之管嘴時，容易產生較大壓降，這將增加循環泵的揚程；3.佔據高爐本體區域空間；4.增加塔式構架負荷；以及5.增加施工困難性及安裝成本。However, the aforementioned blast furnace soft water closed circulation cooling system has the following disadvantages: 1. It is necessary to provide an independent degassing tank and an expansion tank; 2. When the pipeline sinks into the nozzle of the degassing tank, a large pressure drop is likely to occur, which will increase The head of the circulating pump; 3. occupying the space of the blast furnace body; 4. increasing the tower frame load; and 5. increasing the construction difficulty and installation cost.
有鑑於此，便有需要提出一種方案，以解決上述問題。In view of this, there is a need to propose a solution to solve the above problems.
本發明提供一種高爐軟水密閉循環冷卻系統，包含：至少一低壓循環泵；至少一高壓循環泵，與該低壓循環泵連接；一冷卻元件，與該低壓循環泵連接；一鼓風嘴元件，與該高壓循環泵連接；一除氣穩壓裝置，與冷卻元件循環水及該鼓風嘴元件循環水相連接；一熱交換器，與該除氣穩壓裝置連接；一第一漸縮管，設置在該除氣穩壓裝置的軟水進口處，並與該冷卻元件循環水及該鼓風嘴元件循環水回水端連接；以及一第二漸縮管，設置在該除氣穩壓裝置的軟水出口處，並與該熱交換器連接。The present invention provides a blast furnace soft water closed circulation cooling system comprising: at least one low pressure circulation pump; at least one high pressure circulation pump connected to the low pressure circulation pump; a cooling element connected to the low pressure circulation pump; a blast nozzle element, and The high-pressure circulating pump is connected; a degassing regulator is connected to the circulating water of the cooling element and the circulating water of the blower element; a heat exchanger is connected to the degassing regulator; and a first reducer, Provided at a soft water inlet of the degassing regulator, and connected to the cooling element circulating water and the circulating water return end of the blower element; and a second reducer disposed in the degassing regulator The soft water outlet is connected to the heat exchanger.
根據本發明之高爐軟水密閉循環冷卻系統，係以除氣穩壓裝置來取代習知的除氣槽及膨脹槽，因此使槽體的體積變小，增加了爐本體 區域內人員的操作及維修空間。另外，除氣穩壓裝置的軟水進、出口處改以漸縮管來代替管嘴設計，可因此減少管線壓損及降低製作成本。The blast furnace soft water closed circulation cooling system according to the present invention replaces the conventional degassing tank and the expansion tank with a degassing voltage stabilizing device, thereby reducing the volume of the tank body and increasing the furnace body. Operation and maintenance space for personnel in the area. In addition, the soft water inlet and outlet of the degassing regulator are replaced by a tapered tube instead of the nozzle design, thereby reducing the pipeline pressure loss and reducing the manufacturing cost.
為了讓本發明之上述和其他目的、特徵、和優點能更明顯，下文特舉本發明實施例，並配合所附圖示，作詳細說明如下。The above and other objects, features, and advantages of the present invention will become more apparent from the embodiments of the invention.
100‧‧‧高爐軟水密閉循環冷卻系統100‧‧‧Blast Furnace Soft Water Closed Circulation Cooling System
110‧‧‧冷卻元件110‧‧‧ Cooling element
120‧‧‧低壓循環泵120‧‧‧ low pressure circulation pump
130‧‧‧高壓循環泵130‧‧‧High pressure circulation pump
140‧‧‧鼓風嘴元件140‧‧‧Blowing nozzle components
150‧‧‧除氣槽150‧‧‧gas removal tank
160‧‧‧膨脹槽160‧‧‧Expansion tank
170‧‧‧熱交換器170‧‧‧ heat exchanger
200‧‧‧高爐軟水密閉循環冷卻系統200‧‧‧Blast furnace soft water closed circulation cooling system
250‧‧‧除氣穩壓裝置250‧‧‧Degassing regulator
252‧‧‧本體252‧‧‧ Ontology
254‧‧‧次槽體254‧‧00 times
256‧‧‧漸縮管256‧‧‧reducing tube
258‧‧‧漸縮管258‧‧‧reducing tube
280‧‧‧液位計280‧‧‧Level gauge
290‧‧‧惰性氣體控制閥組290‧‧‧Inert gas control valve group
第1圖為習知高爐軟水密閉循環冷卻系統的流程示意圖。The first figure is a schematic flow chart of a conventional blast furnace soft water closed circulation cooling system.
第2圖為本發明之高爐軟水密閉循環冷卻系統的流程示意圖。Figure 2 is a schematic flow chart of the blast furnace soft water closed circulation cooling system of the present invention.
本發明之高爐軟水密閉循環冷卻系統200包含有第1圖所示之冷卻元件110、低壓循環泵120、高壓循環泵130、鼓風嘴元件140及熱交換器170。除此之外，本發明之高爐軟水密閉循環冷卻系統200還包含有一除氣穩壓裝置250。The blast furnace soft water closed circulation cooling system 200 of the present invention includes the cooling element 110, the low pressure circulation pump 120, the high pressure circulation pump 130, the blast nozzle element 140, and the heat exchanger 170 shown in Fig. 1. In addition, the blast furnace soft water closed circulation cooling system 200 of the present invention further includes a degassing regulator 250.
根據本發明之高爐軟水密閉循環冷卻系統200，其中軟水由低壓循環泵120送出後分成兩路，一路進入冷卻元件110後流出，另一路則經由高壓循環泵130加壓後，進入鼓風嘴元件140後流出，再與前述一路流出冷卻元件110的軟水會合後，一同進入除氣穩壓裝置250。軟水離開除氣穩壓裝置250後，進入熱交換器170降溫，最後再回到低壓循環泵120，完成一個冷卻循環。According to the blast furnace soft water closed circulation cooling system 200 of the present invention, the soft water is sent out by the low pressure circulation pump 120 and split into two paths, one enters the cooling element 110 and flows out, and the other is pressurized by the high pressure circulation pump 130, and then enters the blast nozzle element. After flowing out of 140, it merges with the soft water flowing out of the cooling element 110, and then enters the degassing regulator 250. After the soft water leaves the degassing regulator 250, it enters the heat exchanger 170 to cool down, and finally returns to the low pressure circulation pump 120 to complete a cooling cycle.
根據本發明之高爐軟水密閉循環冷卻系統200，其中除氣穩 壓裝置250具有中空的結構，包含有一本體252以及位在本體252上方的一次槽體254，次槽體254內則設置有一液位計280，用來測量軟水的液位。除氣穩壓裝置250的軟水進、出口處則設置有漸縮管256、258，軟水在進入本體252之前，會先通過漸縮管256，其管徑逐漸變大，而後才進入本體252；而軟水在離開本體252後，則會先通過漸縮管258，其管徑逐漸變小，而後才送至管線內。另外，一惰性氣體控制閥組290則連接到次槽體254。除氣穩壓裝置250係可對軟水進行除氣與穩壓，具有習知除氣槽150與膨脹槽160的功能，可用來取代除氣槽150與膨脹槽160。而當軟水進入除氣穩壓裝置250的本體252時，也會流至次槽體254。由於次槽體254具有細長的結構，其體積小於本體252的體積，因體積變小，軟水的液位變化變得很明顯，液位計280更能準確地測量軟水的液位。惰性氣體控制閥組290係可將惰性氣體，例如是氮氣加壓於冷卻系統200內，以使整體軟水系統壓力穩定。a blast furnace soft water closed circulation cooling system 200 according to the present invention, wherein the degassing is stabilized The pressing device 250 has a hollow structure and includes a body 252 and a primary tank 254 positioned above the body 252. The secondary tank 254 is provided with a liquid level gauge 280 for measuring the liquid level of the soft water. The soft water inlet and outlet of the degassing regulator 250 are provided with tapered tubes 256, 258. Before entering the body 252, the soft water first passes through the reducer 256, and the diameter of the tube gradually becomes larger, and then enters the body 252; After leaving the body 252, the soft water first passes through the reducer 258, and its diameter gradually becomes smaller, and then is sent to the pipeline. Additionally, an inert gas control valve block 290 is coupled to the secondary tank 254. The degassing regulator 250 can degas and stabilize the soft water, and has the functions of the conventional deaeration tank 150 and the expansion tank 160, and can be used to replace the deaeration tank 150 and the expansion tank 160. When the soft water enters the body 252 of the degassing regulator 250, it also flows to the sub-tank 254. Since the sub-tank 254 has an elongated structure and its volume is smaller than the volume of the body 252, the liquid level change of the soft water becomes conspicuous due to the smaller volume, and the liquid level gauge 280 can more accurately measure the liquid level of the soft water. The inert gas control valve block 290 can pressurize an inert gas, such as nitrogen, into the cooling system 200 to stabilize the overall soft water system pressure.
根據本發明之高爐軟水密閉循環冷卻系統200，係以除氣穩壓裝置250來取代習知的除氣槽150及膨脹槽160，因此使槽體的體積變小，增加了爐本體區域內人員的操作及維修空間；塔式構架鋼構強度則不須另外補強與節省設備製造、運送、吊掛及安裝成本。惰性氣體控制閥組290利用惰性氣體加壓於冷卻系統200內，不僅可使整體軟水系統壓力穩定，更可避免高爐氣體外洩時，可能造成的工安意外事故。此外，本發明還直接用大管徑管線來取代習知除氣槽150設計，且除氣穩壓裝置250的軟水進、出口處改以漸縮管256、258來代替管嘴設計，可因此減少管線壓損及降低製作成本。According to the blast furnace soft water closed circulation cooling system 200 of the present invention, the conventional degassing tank 150 and the expansion tank 160 are replaced by the degassing regulator 250, thereby reducing the volume of the tank and increasing the number of persons in the furnace body region. Operation and maintenance space; the strength of the tower frame steel structure does not require additional reinforcement and saves equipment manufacturing, transportation, suspension and installation costs. The inert gas control valve group 290 is pressurized into the cooling system 200 by using an inert gas, which not only stabilizes the pressure of the whole soft water system, but also avoids accidents that may occur when the blast furnace gas is leaked. In addition, the present invention also directly replaces the conventional degassing tank 150 design with a large diameter pipe, and the soft water inlet and outlet of the degassing regulator 250 are replaced by a tapered pipe 256, 258 instead of the nozzle design. Reduce pipeline pressure loss and reduce production costs.
雖然本發明已以前述實施例揭示，然其並非用以限定本發 明，任何本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與修改。因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the foregoing embodiments, it is not intended to limit the present invention. It is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
110‧‧‧冷卻元件110‧‧‧ Cooling element
120‧‧‧低壓循環泵120‧‧‧ low pressure circulation pump
130‧‧‧高壓循環泵130‧‧‧High pressure circulation pump
140‧‧‧鼓風嘴元件140‧‧‧Blowing nozzle components
170‧‧‧熱交換器170‧‧‧ heat exchanger
200‧‧‧高爐軟水密閉循環冷卻系統200‧‧‧Blast furnace soft water closed circulation cooling system
250‧‧‧除氣穩壓裝置250‧‧‧Degassing regulator
252‧‧‧本體252‧‧‧ Ontology
254‧‧‧次槽體254‧‧00 times
256‧‧‧漸縮管256‧‧‧reducing tube
258‧‧‧漸縮管258‧‧‧reducing tube
280‧‧‧液位計280‧‧‧Level gauge
290‧‧‧惰性氣體控制閥組290‧‧‧Inert gas control valve group
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102135620A TWI487792B (en) | 2013-10-01 | 2013-10-01 | Blast Furnace Soft Water Closed Circulating Cooling System |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102135620A TWI487792B (en) | 2013-10-01 | 2013-10-01 | Blast Furnace Soft Water Closed Circulating Cooling System |
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| TW201514319A TW201514319A (en) | 2015-04-16 |
| TWI487792B true TWI487792B (en) | 2015-06-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401008A (en) * | 2000-05-09 | 2003-03-05 | 保尔·沃特公司 | Cooling system for a metallurgical furnace |
| CN1417350A (en) * | 2001-11-09 | 2003-05-14 | 武汉钢铁设计研究总院 | Joint soft water sealing and circular cooling system |
| CN101864502A (en) * | 2009-12-22 | 2010-10-20 | 中冶南方工程技术有限公司 | Blast furnace soft water closed circulation cooling system |
| CN102321775A (en) * | 2011-09-26 | 2012-01-18 | 中冶南方工程技术有限公司 | Novel combined soft water closed circulation cooling system |
| CN102965460A (en) * | 2012-11-30 | 2013-03-13 | 北京超达波纹管制造有限公司 | Blast furnace cooling system and flow adjusting method |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401008A (en) * | 2000-05-09 | 2003-03-05 | 保尔·沃特公司 | Cooling system for a metallurgical furnace |
| CN1417350A (en) * | 2001-11-09 | 2003-05-14 | 武汉钢铁设计研究总院 | Joint soft water sealing and circular cooling system |
| CN101864502A (en) * | 2009-12-22 | 2010-10-20 | 中冶南方工程技术有限公司 | Blast furnace soft water closed circulation cooling system |
| CN102321775A (en) * | 2011-09-26 | 2012-01-18 | 中冶南方工程技术有限公司 | Novel combined soft water closed circulation cooling system |
| CN102965460A (en) * | 2012-11-30 | 2013-03-13 | 北京超达波纹管制造有限公司 | Blast furnace cooling system and flow adjusting method |
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| TW201514319A (en) | 2015-04-16 |
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