CN110500572A - A modular condensate heater - Google Patents
A modular condensate heater Download PDFInfo
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- CN110500572A CN110500572A CN201910821627.6A CN201910821627A CN110500572A CN 110500572 A CN110500572 A CN 110500572A CN 201910821627 A CN201910821627 A CN 201910821627A CN 110500572 A CN110500572 A CN 110500572A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 230000005494 condensation Effects 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000005457 optimization Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
本发明公开了一种模块式凝水加热器，包括设立在立式烟道内的一级凝水加热器和三级凝水加热器，给水泵通过管道分别连接一级凝水加热器的上集箱和三级凝水加热器的下级箱，一级凝水加热器的下级箱通过管道连接三级凝水加热器的下集箱，三级凝水加热器通过管道连接至汇水集箱，汇水集箱连接热力除氧器，给水泵、一级凝水加热器、三级凝水加热器和汇水集箱之间的管道上均设置有阀门。本发明通过凝水加热器有效的串联及解列联动，实现了逆流或顺流或混合流换热，使得进入热力除氧器的热水温度维持在100℃～120℃左右，有效稳定了除氧效果，确保了余热发电系统的安全性和经济性运行。
The invention discloses a modular condensate heater, which comprises a first-stage condensate heater and a third-stage condensate heater installed in a vertical flue, and a feed water pump is respectively connected to the upper collector of the first-stage condensate heater through pipelines. tank and the lower tank of the third-stage condensate heater, the lower tank of the first-stage condensate heater is connected to the lower header of the third-stage condensate heater through pipes, and the third-stage condensate heater is connected to the header tank through pipes, The water collection header is connected to the thermal deaerator, and there are valves on the pipelines between the feedwater pump, the first-stage condensate heater, the third-stage condensate heater and the water collection header. The present invention realizes the countercurrent or downstream or mixed flow heat exchange through the effective series connection and decoupling linkage of the condensate heater, so that the temperature of the hot water entering the thermal deaerator is maintained at about 100°C to 120°C, effectively stabilizing the deaerator. The oxygen effect ensures the safe and economical operation of the waste heat power generation system.
Description
技术领域technical field
本发明涉及一种凝水加热器，尤其涉及用于建材、钢铁等行业综合利用余热发电的模块式凝水加热器。The invention relates to a condensate heater, in particular to a modular condensate heater for comprehensive utilization of waste heat in industries such as building materials and iron and steel for power generation.
背景技术Background technique
现有建材、冶金等行业余热回收综合利用领域越来越多的给水除氧系统采用热力除氧模式，其优点不再额外消耗化学药品和电能。目前市场一般都采用单组的逆流布置或者顺流布置的凝水加热器，利用低温废气余热进行换热，产生热水到除氧器中进行热力除氧，但经过众多项目运行表明，采用逆流布置的凝水加热器，容易造成热水沸腾带汽，发生水击事故，采用顺流布置凝水加热器，存在出水温度过低不能满足热力除氧需要的弊端，严重影响了热力除氧的效果，对余热发电的安全性和经济性都有很大的影响。In the field of waste heat recovery and comprehensive utilization in the existing building materials, metallurgy and other industries, more and more water supply deaeration systems adopt the thermal deaeration mode, which has the advantage of no additional consumption of chemicals and electric energy. At present, the market generally adopts a single set of countercurrent arrangement or downstream arrangement of condensate heaters, which use the waste heat of low-temperature exhaust gas for heat exchange, and generate hot water to the deaerator for thermal deoxidation. However, many projects have shown that using countercurrent Arranged condensate heaters are likely to cause hot water to boil with steam, and water hammer accidents occur. If the condensate heaters are arranged downstream, there is a disadvantage that the outlet water temperature is too low to meet the needs of thermal deaeration, which seriously affects the performance of thermal deaeration. The effect has a great impact on the safety and economy of waste heat power generation.
发明内容Contents of the invention
本发明所要解决的技术问题是克服现有凝水加热器水温不稳定的缺点，提供一种具备调温效果的模块式凝水加热器。The technical problem to be solved by the present invention is to overcome the disadvantage of unstable water temperature of the existing condensate heaters, and provide a modular condensate heater with temperature adjustment effect.
为了解决上述技术问题，本发明的一种模块式凝水加热器，包括一级凝水加热器，所述一级凝水加热器设置在烟道内，所述烟道顶部设置有烟道出口，所述烟道内还设置有三级凝水加热器，所述三级凝水加热器设置在烟道入口侧，所述一级凝水加热器的上集箱通过管道连接水泵，所述水泵与一级凝水加热器的上集箱之间的管道上设置有阀门A，所述一级凝水加热器的下集箱通过管道连接三级凝水加热器的下集箱，所述一级凝水加热器的下集箱与三级凝水加热器的下集箱之间的管道上设置有阀门B，所述水泵通过管道连接三级凝水加热器的下集箱，所述水泵与三级凝水加热器的下集箱之间的管道上设置有阀门D，所述三级凝水加热器的上集箱通过管道连接汇水集箱，所述三级凝水加热器的上集箱与汇水集箱之间的管道上设置有阀门H，所述汇水集箱通过管道连接热力除氧器。In order to solve the above technical problems, a modular condensate heater of the present invention includes a primary condensate heater, the primary condensate heater is arranged in the flue, and the top of the flue is provided with a flue outlet, A three-stage condensate heater is also arranged in the flue, and the three-stage condensate heater is arranged on the inlet side of the flue. The upper header of the first-stage condensate heater is connected to a water pump through a pipeline, and the water pump is connected to the The pipeline between the upper headers of the first-stage condensate heater is provided with a valve A, and the lower header of the first-stage condensate heater is connected to the lower header of the third-stage condensate heater through a pipeline. The pipeline between the lower header of the condensate heater and the lower header of the three-stage condensate heater is provided with a valve B, and the water pump is connected to the lower header of the three-stage condensate heater through the pipeline. The pipeline between the lower headers of the three-stage condensate heater is provided with a valve D, the upper header of the three-stage condensate heater is connected to the water collection header through a pipeline, and the upper header of the three-stage condensate heater A valve H is arranged on the pipeline between the header box and the water collection box, and the water collection box is connected to the thermal deaerator through the pipeline.
上述技术方案的进一步优化，所述烟道内还设置有二级凝水加热器，所述二级凝水加热器设置在一级凝水加热器和三级凝水加热器之间，所述阀门B通过管道连接二级凝水加热器的上集箱；所述阀门D通过管道连接二级凝水加热器的上集箱，所述阀门D与二级凝水加热器的上集箱之间的管道上设置有阀门E；所述阀门D与三级凝水加热器的下集箱之间的管道上设置有阀门F；所述二级凝水加热器的下集箱通过管道连接三级凝水加热器的下集箱，所述二级凝水加热器的下集箱与三级凝水加热器的下集箱之间的管道上设置有阀门C。Further optimization of the above technical solution, the flue is also provided with a secondary condensate heater, the secondary condensate heater is arranged between the primary condensate heater and the tertiary condensate heater, the valve B is connected to the upper header of the secondary condensate heater through a pipeline; the valve D is connected to the upper header of the secondary condensate heater through a pipeline, and between the valve D and the upper header of the secondary condensate heater A valve E is set on the pipeline; a valve F is set on the pipeline between the valve D and the lower header of the three-stage condensate heater; the lower header of the second-stage condensate heater is connected to the third stage through a pipeline The lower header of the condensate heater, a valve C is arranged on the pipeline between the lower header of the secondary condensate heater and the lower header of the tertiary condensate heater.
上述技术方案的进一步优化，所述二级凝水加热器的下集箱通过管道还连接汇水集箱，所述二级凝水加热器的下集箱与汇水集箱之间的管道上设置有阀门G。Further optimization of the above technical solution, the lower header of the secondary condensation water heater is also connected to the water collection header through a pipeline, and the pipeline between the lower header of the secondary condensation water heater and the water collection header A valve G is provided.
上述技术方案的进一步优化，所述烟道入口侧设置有测温仪A，测温仪A位于三级凝水加热器的前侧；所述汇水集箱上设置有测温仪B。Further optimization of the above technical solution, the inlet side of the flue is provided with a thermometer A, and the thermometer A is located on the front side of the three-stage condensation water heater; the thermometer B is provided on the water collection header.
本发明的有益效果：与传统的凝水加热器易发生热水沸腾带汽和水击事故相比，本发明通过凝水加热器有效的串联及解列联动，实现了逆流或顺流或混合流换热，使得进入热力除氧器的热水温度维持在100℃～120℃左右，有效稳定了除氧效果，确保了余热发电系统的安全性和经济性运行。Beneficial effects of the present invention: Compared with traditional condensate heaters, which are prone to hot water boiling with steam and water hammer accidents, the present invention realizes countercurrent or downstream or mixed flow through effective series connection and decoupling linkage of condensate heaters. Flow heat exchange keeps the temperature of hot water entering the thermal deaerator at around 100°C to 120°C, which effectively stabilizes the deaeration effect and ensures the safe and economical operation of the waste heat power generation system.
附图说明Description of drawings
图1是本发明一种基础实施例的结构示意图；Fig. 1 is the structural representation of a kind of basic embodiment of the present invention;
图2是本发明一种优化实施例的结构示意图。Fig. 2 is a schematic structural diagram of an optimized embodiment of the present invention.
具体实施方式Detailed ways
参见图1、图2对本发明实施进行详细说明。Referring to Fig. 1 and Fig. 2, the implementation of the present invention will be described in detail.
下面以图2的实施例进行详细说明。The following describes in detail with the embodiment of FIG. 2 .
在立式烟道12内从上至下依次布置有一级凝水加热器8、二级凝水加热器9、三级凝水加热器10。立式烟道12的顶部焊接有烟道出口13。In the vertical flue 12, a primary condensation water heater 8, a secondary condensation water heater 9, and a third condensation water heater 10 are sequentially arranged from top to bottom. The top of the vertical flue 12 is welded with a flue outlet 13 .
给水泵11通过管道20连接至一级凝水加热器的上集箱，给水泵11和一级凝水加热器的上集箱之间的管道20上设置有电动阀门A1。The feedwater pump 11 is connected to the upper header of the first-stage condensate heater through a pipeline 20, and an electric valve A1 is provided on the pipeline 20 between the feedwater pump 11 and the upper header of the first-stage condensate heater.
一级凝水加热器的下集箱通过管道20连接至二级凝水加热器的上集箱，一级凝水加热器的下集箱与二级凝水加热器的上集箱之间的管道20上设置有电动阀门B2。The lower header of the first-stage condensate heater is connected to the upper header of the second-stage condensate heater through a pipeline 20, and the upper header between the lower header of the first-stage condensate heater and the upper header of the second-stage condensate heater An electric valve B2 is provided on the pipeline 20 .
二级凝水加热器的下集箱通过管道20连接至三级凝水加热器的下集箱，二级凝水加热器的下集箱与三级凝水加热器的下集箱之间的管道20上设置有电动阀门C3。The lower header of the second-stage condensate heater is connected to the lower header of the third-stage condensate heater through a pipeline 20, and the lower header of the second-stage condensate heater and the lower header of the third-stage condensate heater The pipeline 20 is provided with an electric valve C3.
给水泵11通过管道20连接至三级凝水加热器的下集箱，给水泵11与三级凝水加热器的下集箱之间依次设置有电动阀门D4和电动阀门F6。The feedwater pump 11 is connected to the lower header of the three-stage condensate heater through the pipeline 20, and an electric valve D4 and an electric valve F6 are sequentially arranged between the feedwater pump 11 and the lower header of the three-stage condensate heater.
电动阀门D4和电动阀门F6中间通过管道20连接至二级凝水加热器的上集箱，电动阀门D4和电动阀门F6中间与二级凝水加热器的上集箱之间的管道20上设置有电动阀门E5。The middle of the electric valve D4 and the electric valve F6 is connected to the upper header of the secondary condensate heater through the pipeline 20, and the pipeline 20 between the middle of the electric valve D4 and the electric valve F6 and the upper header of the secondary condensate heater is set There is electric valve E5.
二级凝水加热器的下集箱通过管道20连接汇水集箱14，二级凝水加热器的下集箱与汇水集箱14之间的管道20上设置有电动阀门G7。The lower header of the secondary condensation water heater is connected to the water collection header 14 through a pipeline 20, and the pipeline 20 between the lower header of the secondary condensation water heater and the water collection header 14 is provided with an electric valve G7.
汇水集箱14上设置有测温仪B17。The water collection header 14 is provided with a thermometer B17.
三级凝水加热器的上集箱通过管道20连接汇水集箱14，三级凝水加热器的上集箱与汇水集箱14之间的管道20上设置有电动阀门H21。The upper header of the three-stage condensation water heater is connected to the water collection header 14 through a pipeline 20, and an electric valve H21 is arranged on the pipeline 20 between the upper header of the three-stage condensation water heater and the water collection header 14.
汇水集箱14通过管道20连接至热力除氧器15。The header tank 14 is connected to the thermal deaerator 15 by a pipe 20 .
立式烟道的烟道入口处设置有测温仪A 16，测温仪A 16设置在三级凝水加热器10的下方。A thermometer A 16 is installed at the flue entrance of the vertical flue, and the thermometer A 16 is arranged below the three-stage condensation water heater 10 .
图1和图2中管道20上的箭头代表水流的方向。The arrows on the pipe 20 in Figures 1 and 2 indicate the direction of water flow.
根据测温仪A 16、测温仪B 17显示的温度的变化，通过电控柜控制电动阀门A 1至电动阀门H 21的开启或关闭，实现一级凝水加热器8、二级凝水加热器9、三级凝水加热器10的串联运行或一级凝水加热器8、二级凝水加热器9的串联运行或二级凝水加热器9、三级凝水加热器10的串联运行或三级凝水加热器10的单独运行，进而实现对水温的控制。According to the temperature change displayed by the thermometer A 16 and the thermometer B 17, the electric valve A 1 to the electric valve H 21 is controlled to open or close through the electric control cabinet, so as to realize the primary condensate heater 8 and the secondary condensate heater The series operation of the heater 9 and the third-stage condensation water heater 10 or the series operation of the first-stage condensation water heater 8 and the second-stage condensation water heater 9 or the series operation of the second-stage condensation water heater 9 and the third-stage condensation water heater 10 Serial operation or separate operation of the three-stage condensation water heater 10, thereby realizing the control of the water temperature.
模块式凝水加热器调温串联及解列联动有以下四种工作方式：Modular condensate heaters have the following four working modes for temperature regulation series connection and decoupling linkage:
1、当测温仪A 16、测温仪B 17显示的温度过低时，需要将三组凝水加热器全部投入换热，此时只需将电动阀门A 1、电动阀门B 2、电动阀门C 3、电动阀门H 21同时开启，关闭电动阀门D 4、电动阀门E 5、电动阀门F 6、电动阀门G 7，给水泵11通过管道20将冷凝水依次送入一级凝水加热器8、二级凝水加热器9、三级凝水加热器10，在一级凝水加热器8和二级凝水加热器9内逆流换热，三级凝水加热器10内顺流换热，加热到合适的热水温度，最后通过汇水集箱14送入热力除氧器15进行除氧。1. When the temperature displayed by thermometer A 16 and thermometer B 17 is too low, all three sets of condensate heaters need to be put into heat exchange. At this time, only electric valve A 1, electric valve B 2, electric Valve C 3, electric valve H 21 are opened at the same time, electric valve D 4, electric valve E 5, electric valve F 6, electric valve G 7 are closed, and the feed water pump 11 sends the condensed water to the first-stage condensate heater through the pipeline 20 in sequence 8. The secondary condensate heater 9 and the tertiary condensate heater 10 perform countercurrent heat exchange in the primary condensate heater 8 and the secondary condensate heater 9 , and forward flow in the tertiary condensate heater 10 heat, heated to a suitable hot water temperature, and finally sent to the thermal deaerator 15 through the header tank 14 for deaeration.
2、当测温仪器A 16、测温仪B 17显示的温度过高时，需要解列2组凝水加热器换热，此时只需将电动阀门D 4、电动阀门F 6、电动阀门H 21同时开启，关闭电动阀门A1、电动阀门C 3、电动阀门E 5、电动阀门G 7，给水泵11通过管道20将冷凝水送入三级凝水加热器10内顺流换热，并加热到合适的温热水度，最后通过汇水集箱14送入热力除氧器15进行除氧。2. When the temperature displayed by the temperature measuring instrument A 16 and the temperature measuring instrument B 17 is too high, it is necessary to disassemble the two sets of condensate heaters for heat exchange. At this time, only the electric valve D 4, the electric valve F 6, and the electric valve H 21 opens at the same time, closes the electric valve A1, electric valve C 3, electric valve E 5, electric valve G 7, feed water pump 11 sends the condensed water into the three-stage condensate heater 10 through the pipeline 20 for downstream heat exchange, and Heated to a suitable warm water temperature, and finally sent to the thermal deaerator 15 through the header tank 14 for deaeration.
3、当测温仪器A 16、测温仪B 17的温度稍微过高时，只需要解列1组凝水加热器换热，此时可将电动阀门C 3、电动阀门D 4、电动阀门E 5、电动阀门H 21同时开启，关闭电动阀门A 1、电动阀门B 2、电动阀门F 6、电动阀门G 7，给水泵11通过管道20将冷凝水依次送入二级凝水加热器9逆流换热，三级凝水加热器10顺流换热，加热到合适的热水温度，最后通过汇水集箱14送入热力除氧器15进行除氧。3. When the temperature of the temperature measuring instrument A 16 and the temperature measuring instrument B 17 is slightly too high, only one group of condensate heaters needs to be disassembled for heat exchange. At this time, the electric valve C 3, electric valve D 4, electric valve E 5. Electric valve H 21 is opened at the same time, electric valve A 1, electric valve B 2, electric valve F 6, electric valve G 7 are closed, and the feed water pump 11 sends condensed water to the secondary condensate heater 9 through the pipeline 20 in sequence Countercurrent heat exchange, three-stage condensate heater 10 downstream heat exchange, heated to a suitable hot water temperature, and finally sent to the thermal deaerator 15 through the water collection header 14 for deaeration.
4、当测温仪器A 16、测温仪B 17的温度稍微过高时，只需要解列1组凝水加热器换热，此时也可将电动阀门A 1、电动阀门B 2、电动阀门G 7同时开启，关闭电动阀门C3、电动阀门D 4、电动阀门E 5、电动阀门H 21，给水泵11通过管道20将冷凝水依次送入一级凝水加热器8和二级凝水加热器9逆流换热，加热到合适的热水温度，最后通过汇水集箱14送入热力除氧器15进行除氧。4. When the temperature of the temperature measuring instrument A 16 and the temperature measuring instrument B 17 is slightly too high, it is only necessary to disassemble a group of condensate heaters for heat exchange. At this time, the electric valve A 1, electric valve B 2, electric valve Valve G 7 is opened at the same time, electric valve C3, electric valve D 4 , electric valve E 5 , electric valve H 21 are closed, and the feed water pump 11 sends the condensed water to the primary condensate heater 8 and the secondary condensate water through the pipeline 20 in sequence The heater 9 exchanges heat in countercurrent, heats the hot water to an appropriate temperature, and finally sends it to the thermal deaerator 15 through the water collection header 14 for deaeration.
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| US11859811B2 (en) | 2021-03-09 | 2024-01-02 | The Cleaver-Brooks Company, Inc. | Auxiliary boiler systems and methods of operating and implementing same |
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