CN107741010A - A kind of boiler blowdown water waste heat and water resource recycling system - Google Patents
A kind of boiler blowdown water waste heat and water resource recycling system Download PDFInfo
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- CN107741010A CN107741010A CN201711140051.4A CN201711140051A CN107741010A CN 107741010 A CN107741010 A CN 107741010A CN 201711140051 A CN201711140051 A CN 201711140051A CN 107741010 A CN107741010 A CN 107741010A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000002918 waste heat Substances 0.000 title claims abstract description 17
- 239000002351 wastewater Substances 0.000 title claims abstract description 14
- 238000004064 recycling Methods 0.000 title claims abstract description 7
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims description 29
- 238000011084 recovery Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 2
- 238000007701 flash-distillation Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
技术领域technical field
本发明余热及传热领域，具体涉及一种锅炉排污水余热与水资源回收再利用系统。The invention relates to the field of waste heat and heat transfer, and specifically relates to a boiler blowdown waste heat and water resource recovery and reuse system.
背景技术Background technique
锅炉给水进入汽包时总是带有一定的盐分，在进行加药处理后，锅水的结垢性物质转变为可溶性和不可溶性杂质，除此外，锅炉水对金属的腐蚀也要产生一些腐蚀产物。在锅炉运行中，这些杂质只有很少部分被蒸汽带走，绝大部分留在锅水中，随着锅水的不断蒸发，这些杂质浓度逐渐增大。Boiler feed water always contains a certain amount of salt when it enters the steam drum. After the dosing treatment, the scaling substances in the boiler water are transformed into soluble and insoluble impurities. In addition, the corrosion of the boiler water to the metal also produces some corrosion. product. During the operation of the boiler, only a small part of these impurities is taken away by the steam, and most of them remain in the pot water. With the continuous evaporation of the pot water, the concentration of these impurities gradually increases.
锅水杂质浓度过大，不仅影响蒸汽品质，而且还可造成受热面的结垢与腐蚀，影响锅炉安全运行。Excessive impurity concentration in boiler water will not only affect the steam quality, but also cause scaling and corrosion on the heating surface, affecting the safe operation of the boiler.
为了控制锅水品质，必须进行锅炉排污，以排出部分被盐质和污染的锅水，并以化学水的继续补充以提高水质。In order to control the quality of boiler water, boiler blowdown must be carried out to discharge part of the boiler water that is salty and polluted, and to continue to replenish chemical water to improve water quality.
锅炉排污分连续排污和定期排污两种。There are two types of boiler blowdown: continuous blowdown and regular blowdown.
排污是锅炉水质管理的一个重要环节，目前采用排污率来表征。排污率是指锅炉连续排污流量与实际蒸发量的比值，锅炉的排污率一般为锅炉容量的3～10％。Sewage discharge is an important part of boiler water quality management, and the discharge rate is currently used to characterize it. The blowdown rate refers to the ratio of the continuous blowdown flow of the boiler to the actual evaporation. The blowdown rate of the boiler is generally 3 to 10% of the boiler capacity.
对于工业锅炉，排污率每增大1％，燃料的消耗量就增加0.3％，这样就浪费了燃料且不能正确评价锅炉的能源消耗及综合管理水平。For industrial boilers, the fuel consumption increases by 0.3% for every 1% increase in the blowdown rate, which wastes fuel and cannot correctly evaluate the boiler's energy consumption and comprehensive management level.
由此可见，对于锅炉排污水余热以及水资源回收利用，可确保锅炉在经济的条件下安全、可靠、长效地运行，减少不必要的损失，达到节约能源的目的。It can be seen that for boiler waste water waste heat and water resource recycling, it can ensure safe, reliable and long-term operation of the boiler under economical conditions, reduce unnecessary losses, and achieve the purpose of saving energy.
目前锅炉排污水均未设计合理的余热及水资源回收系统，余热以及水资源浪费严重，该技术有极大的市场前景。At present, no reasonable waste heat and water resource recovery system is designed for boiler blowdown water, and waste heat and water resources are seriously wasted. This technology has great market prospects.
发明内容Contents of the invention
本发明的目的在于提供一种锅炉排污水余热与水资源回收再利用系统，以解决上述背景技术中提出的问题。The object of the present invention is to provide a boiler blowdown waste heat and water resources recovery and reuse system to solve the problems raised in the above background technology.
为实现上述目的，本发明提供如下技术方案：一种锅炉排污水余热与水资源回收再利用系统，包括压力闪蒸罐、复合相变换热器一、复合相变换热器二，所述压力闪蒸罐顶部设置蒸汽排出管和闪蒸罐安全阀，所述蒸汽排出管另一端与复合相变换热器一连通，所述复合相变换热器一右侧接通蒸汽冷凝水管，所述蒸汽冷凝水管与压力闪蒸罐底部的闪蒸冷凝水管合并后连接疏水泵至复合相变换热器二。In order to achieve the above object, the present invention provides the following technical solutions: a boiler blowdown waste heat and water resource recovery and reuse system, including a pressure flash tank, a composite phase change heat exchanger 1, and a composite phase change heat exchanger 2. A steam discharge pipe and a safety valve of the flash tank are arranged on the top of the pressure flash tank, and the other end of the steam discharge pipe is connected to the composite phase-change heat exchanger, and the right side of the composite phase-change heat exchanger is connected to the steam condensate pipe. The steam condensate pipe is combined with the flash condensate pipe at the bottom of the pressure flash tank and then connected to the drain pump to the second composite phase change heat exchanger.
优选的，所述压力闪蒸罐左侧由上到下设置连排污水管、定排污水管，所述压力闪蒸罐右侧设置液位计，所述压力闪蒸罐底部设置压力闪蒸罐事故排污管，所述压力闪蒸罐内部压力为0.15MPa。Preferably, the left side of the pressure flash tank is provided with continuous sewage pipes and fixed sewage pipes from top to bottom, the right side of the pressure flash tank is provided with a liquid level gauge, and the bottom of the pressure flash tank is provided with a pressure flash tank. Sewage pipe, the internal pressure of the pressure flash tank is 0.15MPa.
优选的，所述复合相变换热器一内部设有大气连通管，所述大气连通管与大气相通，所述复合相变换热器一右端设有热空气排出管。Preferably, the composite phase-change heat exchanger is provided with an atmosphere communication pipe inside, and the atmosphere communication pipe communicates with the atmosphere, and the right end of the composite phase-change heat exchanger is provided with a hot air discharge pipe.
优选的，所述复合相变换热器二左端连通空气连接管，所述空气连接管另一端与复合相变换热器一左端连接，所述复合相变换热器二右端设置冷空气进入管，所述复合相变换热器二底部设置回收水排出管。Preferably, the left end of the composite phase-change heat exchanger 2 is connected to an air connection pipe, the other end of the air connection pipe is connected to the left end of the composite phase-change heat exchanger 1, and the right end of the composite phase-change heat exchanger 2 is provided with cold air to enter Pipe, the recovery water discharge pipe is set at the bottom of the composite phase change heat exchanger.
与现有技术相比，本发明的有益效果如下：Compared with the prior art, the beneficial effects of the present invention are as follows:
本发明提供一种锅炉排污水余热与水资源回收再利用系统，本实用系统简单，节约了大量热和水资源，也避免了污水排放，具有低成本、资源利用率高以及节能减排的优点。The invention provides a recovery and reuse system for waste heat and water resources of boiler blowdown water. The practical system is simple, saves a lot of heat and water resources, and avoids sewage discharge, and has the advantages of low cost, high resource utilization rate, energy saving and emission reduction .
附图说明Description of drawings
图1为一种锅炉排污水余热与水资源回收再利用系统结构示意图。Figure 1 is a schematic structural diagram of a boiler blowdown waste heat and water resource recovery and reuse system.
图中：1-压力闪蒸罐、2-蒸汽排出管、3-闪蒸罐安全阀、4-闪蒸冷凝水管、5-压力闪蒸罐事故排污管、6-复合相变换热器一、7-复合相变换热器二、8-蒸汽冷凝水管、9-冷空气进入管、10-疏水泵、11-热空气排出管、12-大气连通管、13-回收水排出管、14-液位计、15-连排污水管、16-定排污水管、17-空气连接管。In the figure: 1-pressure flash tank, 2-steam discharge pipe, 3-safety valve of flash tank, 4-flash condensate pipe, 5-accident blowdown pipe of pressure flash tank, 6-compound phase change heat exchanger 1 , 7-composite phase change heat exchanger 2, 8-steam condensate pipe, 9-cold air inlet pipe, 10-drainage pump, 11-hot air discharge pipe, 12-atmosphere communication pipe, 13-recycled water discharge pipe, 14 -Level gauge, 15-continuous sewage pipe, 16-fixed sewage pipe, 17-air connecting pipe.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1，本发明提供一种技术方案：一种锅炉排污水余热与水资源回收再利用系统，压力闪蒸罐1、复合相变换热器一6、复合相变换热器二7，所述压力闪蒸罐1顶部设置蒸汽排出管2和闪蒸罐安全阀3，所述蒸汽排出管2另一端与复合相变换热器一6连通，所述复合相变换热器一6右侧接通蒸汽冷凝水管8，所述蒸汽冷凝水管8与压力闪蒸罐1底部的闪蒸冷凝水管4合并后连接疏水泵10至复合相变换热器二7。所述压力闪蒸罐1左侧由上到下设置连排污水管15、定排污水管16，所述压力闪蒸罐1右侧设置液位计14，所述压力闪蒸罐1底部设置压力闪蒸罐事故排污管5，所述压力闪蒸罐1内部压力为0.15MPa。所述复合相变换热器一6内部设有大气连通管12，所述大气连通管12与大气相通，所述复合相变换热器一6右端设有热空气排出管11。所述复合相变换热器二7左端连通空气连接管17，所述空气连接管17另一端与复合相变换热器一6左端连接，所述复合相变换热器二7右端设置冷空气进入管9，所述复合相变换热器二7底部设置回收水排出管13。Please refer to Fig. 1, the present invention provides a technical solution: a boiler blowdown waste heat and water resources recovery and reuse system, pressure flash tank 1, composite phase change heat exchanger 1, composite phase change heat exchanger 2 7 , the top of the pressure flash tank 1 is provided with a steam discharge pipe 2 and a flash tank safety valve 3, and the other end of the steam discharge pipe 2 communicates with a composite phase-change heat exchanger-6, and the composite phase-change heat exchanger- The right side of 6 is connected to the steam condensate pipe 8, and the steam condensate pipe 8 is combined with the flash condensate pipe 4 at the bottom of the pressure flash tank 1 to connect the drain pump 10 to the composite phase change heat exchanger 2 7. The left side of the pressure flash tank 1 is provided with a continuous sewage pipe 15 and a fixed sewage pipe 16 from top to bottom, a liquid level gauge 14 is provided on the right side of the pressure flash tank 1, and a pressure flash tank 1 is provided at the bottom of the pressure flash tank 1. The steam tank accident blowdown pipe 5, the internal pressure of the pressure flash tank 1 is 0.15MPa. The composite phase-change heat exchanger-6 is provided with an atmosphere communication pipe 12 inside, and the atmosphere communication pipe 12 communicates with the atmosphere, and the right end of the composite phase-change heat exchanger-6 is provided with a hot air discharge pipe 11. The left end of the composite phase-change heat exchanger 7 is connected to the air connecting pipe 17, the other end of the air connecting pipe 17 is connected to the left end of the composite phase-change heat exchanger 1 6, and the right end of the composite phase-change heat exchanger 7 is provided with a cooling The air enters the pipe 9, and the recovery water discharge pipe 13 is arranged at the bottom of the composite phase change heat exchanger 2 7 .
实施例：一种锅炉排污水余热与水资源回收再利用系统，锅炉连排扩容器闪蒸后排出的饱和水和定排污水合并进入压力闪蒸罐1内闪蒸至压力蒸汽；闪蒸后的蒸汽经过压力闪蒸罐1上连接的蒸汽排出管2进入复合相变换热器一6内对空气进行放热并冷凝；压力闪蒸罐1上设有闪蒸罐安全阀3在压力闪蒸罐1超压时进行压力泄放以确保系统安全，压力闪蒸罐1上设有压力闪蒸罐事故排污管5确保系统设备故障时压力闪蒸罐1事故放水；复合相变换热器一6冷凝水与压力闪蒸罐1的闪蒸冷凝水管4合并后经疏水泵10加压后经冷凝水连接管8进入复合相变换热器二7对空气放热至低温水去脱硫塔做脱硫溶液再利用；冷空气经过冷空气进入管9进入复合相变换热器6和复合相变换热器二7进行加热，加热后的热空气经过热空气排出管11输送至炉膛做燃烧再利用。由此，本系统可以实现锅炉排污水零排放。Embodiment: A boiler blowdown waste heat and water resources recovery and reuse system, the saturated water and the fixed blowdown water discharged after the flash evaporation of the continuous row expansion vessel of the boiler are combined into the pressure flash tank 1 and flashed to pressure steam; The steam enters the composite phase change heat exchanger-6 through the steam discharge pipe 2 connected to the pressure flash tank 1 to release heat and condense the air; When the steam tank 1 is overpressured, the pressure is released to ensure the safety of the system, and the pressure flash tank 1 is provided with a pressure flash tank accident blowdown pipe 5 to ensure that the pressure flash tank 1 accident releases water when the system equipment fails; the composite phase change heat exchanger 16 The condensed water is combined with the flash condensed water pipe 4 of the pressure flash tank 1, and after being pressurized by the drain pump 10, it enters the composite phase change heat exchanger through the condensed water connecting pipe 8. Reuse the desulfurization solution; the cold air enters the composite phase change heat exchanger 6 and the composite phase change heat exchanger 2 7 through the cold air inlet pipe 9 for heating, and the heated hot air is transported to the furnace through the hot air discharge pipe 11 for combustion Reuse. Thus, the system can realize zero discharge of boiler sewage.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
Claims (4)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109029045A (en) * | 2018-07-17 | 2018-12-18 | 九三粮油工业集团有限公司 | A kind of tempering tower high-temperature condensation water efficient heat energy is using system and utilizes method |
| CN114623432A (en) * | 2022-03-17 | 2022-06-14 | 陕西精益化工有限公司 | Exhaust steam recycling device of fixed-row flash tank |
| CN114777544A (en) * | 2022-04-21 | 2022-07-22 | 山东大学 | Intermittent steam waste heat recycling system and working method |
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| CN109029045A (en) * | 2018-07-17 | 2018-12-18 | 九三粮油工业集团有限公司 | A kind of tempering tower high-temperature condensation water efficient heat energy is using system and utilizes method |
| CN114623432A (en) * | 2022-03-17 | 2022-06-14 | 陕西精益化工有限公司 | Exhaust steam recycling device of fixed-row flash tank |
| CN114777544A (en) * | 2022-04-21 | 2022-07-22 | 山东大学 | Intermittent steam waste heat recycling system and working method |
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Address after: Room B4, 5th floor, Lechuang Space C Building, Fengxi New Town, Xixian New District, Xianyang City, Shaanxi Province, 712000 Applicant after: Shaanxi Boyuan Energy Technology Co.,Ltd. Address before: Room 511 on the 5th floor of the Science and Technology Exhibition Center of Tsinghua Science and Technology Park, 55 Century Avenue, Fengxi New Town, Xixian New District, Xi'an City, Shaanxi Province, 712000 Applicant before: SHAANXI XIXIAN NEW DISTRICT BOYUAN ENERGY ENGINEERING CO.,LTD. |
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Application publication date: 20180227 |