CN201121883Y - A thermal oxygen removal system - Google Patents
A thermal oxygen removal system Download PDFInfo
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- CN201121883Y CN201121883Y CNU200720074156XU CN200720074156U CN201121883Y CN 201121883 Y CN201121883 Y CN 201121883Y CN U200720074156X U CNU200720074156X U CN U200720074156XU CN 200720074156 U CN200720074156 U CN 200720074156U CN 201121883 Y CN201121883 Y CN 201121883Y
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- boiler
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- flue gas
- water
- steam injection
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract description 5
- 239000001301 oxygen Substances 0.000 title abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 239000002918 waste heat Substances 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 abstract description 4
- 238000006392 deoxygenation reaction Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008747 shengyu Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- Y02P10/25—Process efficiency
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Abstract
本实用新型公开了一种热力除氧系统，它包括：热力除氧器、换热器、除氧水泵、油田注汽锅炉柱塞泵、油田注汽锅炉，其特点是，在油田注汽锅炉烟气出口端置有超导烟气余热回收装置，其进水端与热交换器连接，出水端连接热力除氧器进水端，将进入热力除氧器的软化水加热以提高进入热力除氧器的水温。本实用新型是对现有热力除氧系统的改进，一方面通过超导烟气余热回收装置降低排烟温度，提高锅炉热效率，节能降耗；另一方面提高进入除氧器的水温使热力除氧器的耗汽量下降，弥补了采用热力除氧器带来锅炉出力下降的不足。优点是节能降耗，锅炉运行费用下降，效益明显；锅炉出力增加，提高了锅炉的投资经济性。
The utility model discloses a thermal deaeration system, which comprises: a thermal deaerator, a heat exchanger, a deoxygenation water pump, a plunger pump for an oil field steam injection boiler, and an oil field steam injection boiler. A superconducting flue gas waste heat recovery device is installed at the outlet of the flue gas. The water inlet is connected to the heat exchanger, and the water outlet is connected to the water inlet of the thermal deaerator. Oxygen water temperature. The utility model is an improvement to the existing thermal deaeration system. On the one hand, the superconducting flue gas waste heat recovery device reduces the exhaust gas temperature, improves the thermal efficiency of the boiler, saves energy and reduces consumption; The steam consumption of the oxygenator is reduced, which makes up for the shortage of the boiler output caused by the thermal deaerator. The advantages are energy saving and consumption reduction, boiler operating costs are reduced, and the benefits are obvious; the output of the boiler is increased, which improves the investment economy of the boiler.
Description
技术领域 technical field
本实用新型涉及一种热力除氧系统，特别是利用烟道余热加热热力除氧器给水，使进入热力除氧器的水温达90℃左右，从而热力除氧器的耗汽量大大下降的一种新的热力除氧系统。The utility model relates to a thermal deaerator system, in particular to a system which utilizes the waste heat of the flue to heat the feed water of the thermal deaerator so that the temperature of the water entering the thermal deaerator reaches about 90°C, thereby greatly reducing the steam consumption of the thermal deaerator A new thermal oxygen removal system.
背景技术 Background technique
锅炉排烟热损失是影响锅炉热效率的一个主要因素。锅炉烟气余热利用是锅炉行业一直在探讨的课题。特别针对油田注汽锅炉，设计上考虑油田现场搬迁需要，尽可能使锅炉结构紧凑，排烟热损失是油田注汽锅炉中最大的一项热损失；实际运行中，对燃油的油田注汽锅炉，因油田注汽锅炉的对流段翅片管结构很容易造成对流段积灰，使油田注汽锅炉运行烟温往往较设计烟温高出很多，形成更大的排烟热损失。在认识到油田注汽锅炉烟气余热的巨大浪费后，采用常规换热器置于油田注汽锅炉对流段上，虽然油田注汽锅炉排烟温度有明显下降，节能效果显著。但由于低温腐蚀问题，使得换热器寿命最长在二年之内。通过对各种换热器换热机理的分析研究，上海晟煜科贸有限公司发明了超导热管换热器(专利号：ZL01254314.6)作为油田注汽锅炉的余热回收装置。该型换热器采用超导热管传热技术，由于其高温端与低温端分属不同区间，可通过设计辟开低温腐蚀区，从而从根本上解决了换热器的使用寿命问题，并在大量的生产实践中取得了良好的节能效果。然而现有的热力除氧系统是软水经换热器，使水温从常温20℃左右提升至60℃左右，作为热力除氧器的给水，虽节约了能耗，但热力除氧器主要还是靠油田注汽锅炉来加热，用于加热除氧给水所消耗的蒸汽量约占锅炉负荷的15％左右。因此，采用热力除氧器将使锅炉出力下降。对于油田热采而言，注入地层的蒸汽速度及注汽量与采出效果密切相关，油田注汽锅炉负荷的下降将带来投资经济性下降。Boiler exhaust heat loss is a major factor affecting boiler thermal efficiency. Utilization of waste heat from boiler flue gas is a subject that has been discussed in the boiler industry. Especially for oilfield steam injection boilers, the design considers the needs of oilfield site relocation, and makes the boiler structure as compact as possible. The exhaust heat loss is the largest heat loss in oilfield steam injection boilers; in actual operation, the oilfield steam injection boilers with fuel oil Because the finned tube structure of the convection section of the oilfield steam injection boiler is easy to cause dust accumulation in the convection section, the operating flue temperature of the oilfield steam injection boiler is often much higher than the design flue temperature, resulting in greater exhaust heat loss. After realizing the huge waste of flue gas waste heat from steam injection boilers in oil fields, conventional heat exchangers were placed on the convection section of steam injection boilers in oil fields. Although the exhaust gas temperature of steam injection boilers in oil fields dropped significantly, the energy saving effect was remarkable. However, due to the low-temperature corrosion problem, the longest service life of the heat exchanger is within two years. Through the analysis and research on the heat transfer mechanism of various heat exchangers, Shanghai Shengyu Technology and Trade Co., Ltd. invented a superconducting heat pipe heat exchanger (patent number: ZL01254314.6) as a waste heat recovery device for steam injection boilers in oil fields. This type of heat exchanger adopts superconducting heat pipe heat transfer technology. Since its high-temperature end and low-temperature end belong to different sections, it can be designed to open up low-temperature corrosion areas, thereby fundamentally solving the service life of the heat exchanger. A large number of production practices have achieved good energy-saving effects. However, in the existing thermal deaerator system, soft water passes through the heat exchanger to increase the water temperature from about 20°C to about 60°C. As the feed water for the thermal deaerator, although energy consumption is saved, the thermal deaerator mainly relies on The oil field steam injection boiler is used for heating, and the steam consumed for heating deaeration feed water accounts for about 15% of the boiler load. Therefore, the use of thermal deaerator will reduce the boiler output. For oilfield thermal recovery, the steam velocity and steam injection volume injected into the formation are closely related to the recovery effect, and the decrease in the load of oilfield steam injection boilers will lead to a decrease in investment economy.
发明内容 Contents of the invention
本实用新型需要解决由于用热力除氧器带来锅炉负荷下降的问题，克服现有热力除氧系统的缺点，提供一种利用烟道余热经超导烟气余热回收装置提高热力除氧器给水温度，从而提高锅炉热效率，节能降耗的新的热力除氧系统。The utility model needs to solve the problem of boiler load drop due to the use of thermal deaerators, overcome the shortcomings of existing thermal deaerator systems, and provide a method to improve the water supply of thermal deaerators by utilizing the waste heat of the flue through a superconducting flue gas waste heat recovery device. temperature, thereby improving the thermal efficiency of the boiler, saving energy and reducing consumption of the new thermal oxygen removal system.
本实用新型的技术方案是：一种热力除氧系统，它包括：热力除氧器、换热器、除氧水泵、油田注汽锅炉柱塞泵、油田注汽锅炉、鼓风机，其特点是，在油田注汽锅炉烟气出口端置有超导烟气余热回收装置，其进水端与热交换器连接，出水端连接热力除氧器进水端，将进入热力除氧器的软化水加热以提高进入热力除氧器的水温，从而降低了热力除氧器的蒸汽消耗量，提高了锅炉出力。The technical scheme of the utility model is: a thermal deaeration system, which includes: a thermal deaerator, a heat exchanger, a deaeration water pump, a plunger pump for an oil field steam injection boiler, an oil field steam injection boiler, and a blower. Its characteristics are: A superconducting flue gas waste heat recovery device is installed at the flue gas outlet of the steam injection boiler in the oil field. The water inlet is connected to the heat exchanger, and the water outlet is connected to the water inlet of the thermal deaerator to heat the softened water entering the thermal deaerator. To increase the temperature of the water entering the thermal deaerator, thereby reducing the steam consumption of the thermal deaerator and increasing the output of the boiler.
本实用新型是对现有热力除氧系统的改进，一方面通过超导烟气余热回收装置降低排烟温度，提高锅炉热效率，节能降耗；另一方面提高进入除氧器的水温使热力除氧器的耗汽量下降，弥补了采用热力除氧器带来锅炉出力下降的不足。优点是节能降耗，锅炉运行费用下降，效益明显；锅炉出力增加，提高了锅炉的投资经济性。The utility model is an improvement to the existing thermal deaeration system. On the one hand, the superconducting flue gas waste heat recovery device reduces the exhaust gas temperature, improves the thermal efficiency of the boiler, saves energy and reduces consumption; The steam consumption of the oxygenator is reduced, which makes up for the shortage of the boiler output caused by the thermal deaerator. The advantages are energy saving and consumption reduction, boiler operating costs are reduced, and the benefits are obvious; the output of the boiler is increased, which improves the investment economy of the boiler.
附图说明 Description of drawings
图1为热力除氧系统原理示意图。Figure 1 is a schematic diagram of the principle of the thermal oxygen removal system.
具体实施方式 Detailed ways
由图1所示，一种热力除氧系统，它包括：换热器1、热力除氧器3、除氧水泵4、油田注汽锅炉柱塞泵5、油田注汽锅炉6、鼓风机7，其特点是，在油田注汽锅炉6烟气出口端置有超导烟气余热回收装置2，所述的超导烟气余热回收装置2的进水端与热交换器1连接，超导烟气余热回收装置2的出水端连接热力除氧器3的进水端，将进入热力除氧器3的软化水的水温从常温20℃左右提升至60℃左右，然后进入超导烟气余热回收装置2的水温再一次提升至约90℃左右，最后进入热力除氧器(3)进行热力除氧。除氧后的合格除氧水首先进入换热器1降温至60℃左右，经除氧水泵4泵入油田注汽锅炉给水柱塞泵5进入油田注汽锅炉6。As shown in Figure 1, a thermal deaeration system includes: a heat exchanger 1, a thermal deaerator 3, a deaeration water pump 4, an oil field steam injection boiler plunger pump 5, an oil field steam injection boiler 6, and a blower 7, It is characterized in that a superconducting flue gas waste heat recovery device 2 is installed at the flue gas outlet of the steam injection boiler 6 in the oil field, and the water inlet end of the superconducting flue gas waste heat recovery device 2 is connected to the heat exchanger 1, and the superconducting flue gas waste heat recovery device 2 is connected to the heat exchanger 1, and the superconducting flue gas The water outlet end of the gas waste heat recovery device 2 is connected to the water inlet end of the thermal deaerator 3, and the temperature of the softened water entering the thermal deaerator 3 is raised from about 20°C to about 60°C, and then enters the superconducting flue gas waste heat recovery The water temperature of the device 2 is raised to about 90°C again, and finally enters the thermal deaerator (3) for thermal deaeration. The qualified deoxygenated water after deoxygenation first enters the heat exchanger 1 to cool down to about 60°C, and then is pumped into the oil field steam injection boiler feedwater plunger pump 5 through the deoxygenated water pump 4 and enters the oil field steam injection boiler 6.
换热器1的设置目的一方面是因为油田注汽锅炉给水柱塞泵5进水水温不得超过70℃，104℃的除氧水必须先进入换热器降温而后才能进入油田注汽锅炉给水柱塞泵5；另一方面降温后的除氧水不易造成除氧水泵4的汽蚀，改善了除氧水泵4的运行工况。The purpose of setting heat exchanger 1 is because the water temperature of plunger pump 5 for oil field steam injection boiler feed water must not exceed 70°C, and the deoxygenated water at 104°C must first enter the heat exchanger to cool down before entering the oil field steam injection boiler feed water column plug pump 5; on the other hand, the deoxygenated water after cooling is not easy to cause cavitation of the deoxygenated water pump 4, which improves the operating conditions of the deoxygenated water pump 4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720074156XU CN201121883Y (en) | 2007-08-28 | 2007-08-28 | A thermal oxygen removal system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU200720074156XU CN201121883Y (en) | 2007-08-28 | 2007-08-28 | A thermal oxygen removal system |
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| CN201121883Y true CN201121883Y (en) | 2008-09-24 |
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| CNU200720074156XU Expired - Fee Related CN201121883Y (en) | 2007-08-28 | 2007-08-28 | A thermal oxygen removal system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047640A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Boiler with heat exchanging device |
| CN105043730A (en) * | 2015-06-26 | 2015-11-11 | 中国核动力研究设计院 | Deoxidizing structure suitable for thermal hydraulic closed test loop and dynamic deoxidizing method |
| CN105090930A (en) * | 2015-08-20 | 2015-11-25 | 四川德胜集团钒钛有限公司 | Boiler water supply mechanism |
-
2007
- 2007-08-28 CN CNU200720074156XU patent/CN201121883Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047640A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Boiler with heat exchanging device |
| CN105043730A (en) * | 2015-06-26 | 2015-11-11 | 中国核动力研究设计院 | Deoxidizing structure suitable for thermal hydraulic closed test loop and dynamic deoxidizing method |
| CN105090930A (en) * | 2015-08-20 | 2015-11-25 | 四川德胜集团钒钛有限公司 | Boiler water supply mechanism |
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Granted publication date: 20080924 Termination date: 20090928 |