CN103508503A - Heat-exchange deoxidizing device - Google Patents
Heat-exchange deoxidizing device Download PDFInfo
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- CN103508503A CN103508503A CN201310442625.9A CN201310442625A CN103508503A CN 103508503 A CN103508503 A CN 103508503A CN 201310442625 A CN201310442625 A CN 201310442625A CN 103508503 A CN103508503 A CN 103508503A
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Abstract
The invention discloses a heat-exchange deoxidizing device, relates to the field of deoxidizing equipment, and solves the technical problems that in the prior art, the high temperature deoxidized water may damage the water pump badly, and the energy utilization rate is not enough. The deoxidizing device comprises a heat exchanger, wherein the heat exchanger is connected with an deoxidized water tank, a soft water source and a heat source; the heat exchanger further comprises a first heat exchanger and a second heat exchanger; a water outlet of the deoxidized water tank is connected with a hot water inlet of the first heat exchanger; a hot water outlet of the first heat exchanger is connected with a water pump; a soft water inlet of the first heat exchanger is connected with the soft water source; a soft water outlet of the first heat exchanger is connected with a soft water inlet of the second heat exchanger; a soft water outlet of the second heat exchanger is connected with a water inlet of the deoxidized water tank; a hot water inlet of the second heat exchanger is connected with the heat source; the hot water after heat exchange is discharged through the hot water outlet of the second heat exchanger. The first heat exchanger is utilized to reduce the temperature of the deoxidized water to avoid the phenomenon that the water pump is eroded by high temperature; the heat released by the deoxidized water can raise the temperature of the soft water.
Description
[technical field]
The present invention relates to a kind of de-aerator plant of removing water oxygen gas.
[background technology]
Oxygen corrosion affects the work-ing life of boiler always, removes oxygen in oiler feed boiler is played to conclusive effect work-ing life, and thermal de-aeration is a kind of in numerous Deoxidization methods.Existing thermal de-aeration mode, by water is heated into gas-liquid mixture, is then shunted gas and liquid in deoxygenation water tank, gets rid of oxygen; But the hot water temperature in deoxygenation water tank is higher than 100 ℃, and therefore high to the heatproof requirement of institute's connection water pump on deoxygenation water outlet of water tank, deoxygenation water tank need to be arranged on higher height, and the pipeline of logical long-distance reduces the temperature of deaerated water, prevents that water pump from being cavitated; And existing heat exchange is low to the utilization ratio of the energy.
[summary of the invention]
The technical problem that the present invention solves is to provide a kind of heat exchange de-aerator plant, can reduce the temperature of the deaerated water flowing out in deoxygenation water tank, and improves the utilization ratio to the energy.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of heat exchange de-aerator plant, comprise interchanger, on described interchanger, be connected with deoxygenation water tank, soft water source and thermal energy source, described interchanger also comprises First Heat Exchanger and the second interchanger, the water outlet of deoxygenation water tank connects the hot water inlet of First Heat Exchanger, the hot water outlet of First Heat Exchanger connects water pump, the soft water import of First Heat Exchanger connects soft water source, the soft water outlet of First Heat Exchanger connects the soft water import of the second interchanger, the water-in of the deoxygenation water tank that the soft water outlet of the second interchanger connects, the hot water inlet of the second interchanger connects thermal energy source, hot water outlet by the second interchanger is discharged the hot water after heat exchange.
Further, described heat exchange de-aerator plant also comprises the 3rd interchanger, the hot water inlet of the 3rd interchanger connects the hot water outlet of the second interchanger, hot water outlet by the 3rd interchanger is discharged the hot water after heat exchange, the soft water import of the 3rd interchanger connects soft water source, and the soft water outlet of the 3rd interchanger connects the soft water import of First Heat Exchanger.
Further, in described deoxygenation water tank, be provided with float(ing)valve, the water-in of float(ing)valve connects the soft water outlet of the second interchanger.
Further, described First Heat Exchanger is displacement heat exchanger.
Further, described the second interchanger and the 3rd interchanger are plate-type heat exchanger.
Beneficial effect of the present invention:
Heat exchange de-aerator plant of the present invention, heats soft water by First Heat Exchanger, the second interchanger and the 3rd interchanger, in deoxygenation water tank by evaporation oxygen formation separated with water body deaerated water; First Heat Exchanger utilizes the high temperature deaerated water of discharging in deoxygenation water tank to carry out heat exchange to soft water, not only can reduce the temperature of deaerated water, avoids water pump to be cavitated by high temperature, has also utilized the high temperature deaerated water having heated, and low temperature soft water is originally heated; The heat energy that the second interchanger and the 3rd interchanger utilize for twice thermal energy source to provide, heat energy is fully absorbed, and can guarantee that the temperature after soft water heating reaches the requirement of removing oxygen in water, and energy utilization rate is also high.
These features of the present invention and advantage will be below embodiment, accompanying drawing in detailed exposure.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the structural representation of embodiment mono-in the present invention;
Fig. 2 is the connection diagram of First Heat Exchanger and the second interchanger in embodiment mono-;
Fig. 3 is the structural representation of embodiment bis-in the present invention;
Fig. 4 is the connection diagram of First Heat Exchanger in embodiment bis-, the second interchanger and the 3rd interchanger.
[embodiment]
The invention provides a kind of heat exchange de-aerator plant, comprise interchanger, on interchanger, be connected with deoxygenation water tank, soft water source and thermal energy source, interchanger also comprises First Heat Exchanger and the second interchanger, the water outlet of deoxygenation water tank connects the hot water inlet of First Heat Exchanger, the hot water outlet of First Heat Exchanger connects water pump, the soft water import of First Heat Exchanger connects soft water source, the soft water outlet of First Heat Exchanger connects the soft water import of the second interchanger, the water-in of the deoxygenation water tank that the soft water outlet of the second interchanger connects, the hot water inlet of the second interchanger connects thermal energy source, hot water outlet by the second interchanger is discharged the hot water after heat exchange.Utilize First Heat Exchanger that the deaerated water flowing out in soft water and deoxygenation water tank is carried out to heat exchange, can reduce on the one hand the temperature of deaerated water, avoid water pump to be cavitated by high temperature, also utilize on the other hand the heat energy of deaerated water release by the temperature increase of soft water.Soft water entered the second interchanger after entering First Heat Exchanger, the high-temperature-hot-water or the high-temperature steam that provide with thermal energy source carry out heat exchange, after soft water after heating, flow into deoxygenation water tank, oxygen overflows formation deaerated water from high temperature soft water, and deaerated water offers boiler by water pump.
Accompanying drawing below in conjunction with the embodiment of the present invention is explained and illustrated the technical scheme of the embodiment of the present invention, but following embodiment is only the preferred embodiments of the present invention, not all.Embodiment based in embodiment, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to protection scope of the present invention.
Embodiment mono-:
With reference to figure 1 and Fig. 2, shown a kind of heat exchange de-aerator plant, comprise deoxygenation water tank 1, First Heat Exchanger 3, the second interchanger 2, soft water source and thermal energy source, the water outlet 11 of deoxygenation water tank connects the hot water inlet 31 of First Heat Exchanger, the hot water outlet 33 of First Heat Exchanger connects water pump, the soft water import 34 of First Heat Exchanger connects soft water source, the soft water outlet 32 of First Heat Exchanger connects the soft water import 23 of the second interchanger, the water-in 13 of the deoxygenation water tank that the soft water outlet 21 of the second interchanger connects, the hot water inlet 22 of the second interchanger connects thermal energy source, the hot water of discharging after heat exchange by the hot water outlet 24 of the second interchanger, first the soft water that soft water source provides flow into the soft water import 34 of First Heat Exchanger, and soft water carries out heat exchange with the high temperature deaerated water that deoxygenation water outlet of water tank 11 flows out in First Heat Exchanger 3, and soft water rises to certain temperature, and has reduced the fluid temperature (F.T.) that flows to the pump housing, soft water flows out First Heat Exchanger 3 and flows into the second interchanger 2, carries out heat exchange with the high-temperature water in the second interchanger 2, is heated to more than 104 ℃.Gas liquid mixture after heating flows into deoxygenation water tank 1, and oxygen are discharged in the air outlet 12 of deoxygenation water tank, and deaerated water flows to boiler after by First Heat Exchanger 3 and water pump.
And in deoxygenation water tank 1, be provided with float(ing)valve 5, the water-in of float(ing)valve 5 connects the soft water outlet 21 of the second interchanger, by float(ing)valve 5, the gas-liquid mixed water-jet after heating is entered in deoxygenation water tank 1, it is poor that float(ing)valve can guarantee to keep certain height between the water outlet of valve body and the water surface, therefore in the process that gas can fall at fluid with fluid wind from, therefore effectively guarantee oxygen to remove clean.
Wherein First Heat Exchanger 3 is preferably displacement heat exchanger.Displacement heat exchanger is when the heat exchange of water-water, and hot temperature is reduced to 2～2.5 times of same type heat exchanger, and the deaerated water of 104 ℃ can be reduced to 40 ℃～50 ℃, and the deaerated water temperature that therefore flows to water pump was compared originally significantly reduction; Displacement heat exchanger can be stored certain soft water water yield simultaneously, to guarantee the timely supply of soft water.
In addition, the second interchanger 2 is plate-type heat exchanger, and plate-type heat exchanger compact appearance, heat transfer coefficient is high, thermosteresis is little, and comparing displacement heat exchanger can the more effective heat energy that utilizes thermal energy source, effectively soft water is heated to the required temperature of deoxygenation.
Embodiment bis-:
With reference to figure 3 and Fig. 4, on the basis of embodiment, the heat exchange de-aerator plant of the present embodiment also includes the 3rd interchanger 4, the hot water inlet 42 of the 3rd interchanger connects the hot water outlet 24 of the second interchanger, the hot water of discharging after heat exchange by the hot water outlet 44 of the 3rd interchanger, the soft water import 43 of the 3rd interchanger connects soft water source, and the soft water outlet 41 of the 3rd interchanger connects the soft water import 34 of First Heat Exchanger.Thermal energy source provides high-temperature-hot-water or high-temperature steam, and high-temperature-hot-water is reduced to 80 ℃ of left and right through the second interchanger 2, and temperature is still higher, utilize the 3rd interchanger 4 second stage employ after temperature can be reduced to 30 ℃ of left and right, improved the utilization to heat energy.Soft water is through the 3rd interchanger 4, absorb the heat that high temperature heat source discharges at the 3rd interchanger 4, soft water temperature is elevated to 40 ℃ of left and right, then soft water absorbs through First Heat Exchanger 3 heat that deoxygenation water tank is discharged high temperature deaerated water, soft water temperature is elevated to 90 ℃ of left and right, and this process is reduced to 50 ℃ of left and right by the temperature of deaerated water from 104 ℃, soft water absorbs finally by crossing the second interchanger 2 energy that high temperature heat source discharges, soft water temperature is elevated to more than 104 ℃, and soft water enters deoxygenation water tank 1 and carries out gas-liquid separation.Hot water heating soft water after the 3rd interchanger second stage employ the second interchanger heat exchange, has improved the utilization ratio of heat energy, and can faster soft water be heated to deoxygenation temperature.
Wherein the 3rd interchanger 4 is preferably plate-type heat exchanger.
By above-described embodiment, object of the present invention is by fully effective having reached.The personage who is familiar with this technology should be understood that the content that the present invention includes but be not limited to accompanying drawing and describe in embodiment above.Any modification that does not depart from function and structure principle of the present invention all will be included in the scope of claims.
Claims (5)
1. a heat exchange de-aerator plant, comprise interchanger, on described interchanger, be connected with deoxygenation water tank, soft water source and thermal energy source, it is characterized in that: described interchanger also comprises First Heat Exchanger and the second interchanger, the water outlet of deoxygenation water tank connects the hot water inlet of First Heat Exchanger, the hot water outlet of First Heat Exchanger connects water pump, the soft water import of First Heat Exchanger connects soft water source, the soft water outlet of First Heat Exchanger connects the soft water import of the second interchanger, the water-in of the deoxygenation water tank that the soft water outlet of the second interchanger connects, the hot water inlet of the second interchanger connects thermal energy source, hot water outlet by the second interchanger is discharged the hot water after heat exchange.
2. a kind of heat exchange de-aerator plant according to claim 1, it is characterized in that: described heat exchange de-aerator plant also comprises the 3rd interchanger, the hot water inlet of the 3rd interchanger connects the hot water outlet of the second interchanger, hot water outlet by the 3rd interchanger is discharged the hot water after heat exchange, the soft water import of the 3rd interchanger connects soft water source, and the soft water outlet of the 3rd interchanger connects the soft water import of First Heat Exchanger.
3. a kind of heat exchange de-aerator plant according to claim 1 and 2, is characterized in that: in described deoxygenation water tank, be provided with float(ing)valve, the water-in of float(ing)valve connects the soft water outlet of the second interchanger.
4. a kind of heat exchange de-aerator plant according to claim 1 and 2, is characterized in that: described First Heat Exchanger is displacement heat exchanger.
5. a kind of heat exchange de-aerator plant according to claim 1 and 2, is characterized in that: described the second interchanger and the 3rd interchanger are plate-type heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310442625.9A CN103508503B (en) | 2013-09-25 | 2013-09-25 | A kind of heat exchange de-aerator plant |
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| CN201310442625.9A CN103508503B (en) | 2013-09-25 | 2013-09-25 | A kind of heat exchange de-aerator plant |
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| CN103508503A true CN103508503A (en) | 2014-01-15 |
| CN103508503B CN103508503B (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726133A (en) * | 2019-09-26 | 2020-01-24 | 首钢京唐钢铁联合有限责任公司 | Method and device for reducing dissolved oxygen in water supply of CCPP (combined cycle process control) waste heat boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110726133A (en) * | 2019-09-26 | 2020-01-24 | 首钢京唐钢铁联合有限责任公司 | Method and device for reducing dissolved oxygen in water supply of CCPP (combined cycle process control) waste heat boiler |
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| CN103508503B (en) | 2016-01-20 |
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Address after: 313023 Zhejiang Liju water heater Co., Ltd., east of Jianshe North Road, shangqiang industrial functional zone, Daixi Town, Wuxing District, Huzhou City, Zhejiang Province Patentee after: Zhejiang Liju thermal energy equipment Co.,Ltd. Address before: 313023 Zhejiang Liju water heater Co., Ltd., east of Jianshe North Road, shangqiang industrial functional zone, Daixi Town, Wuxing District, Huzhou City, Zhejiang Province Patentee before: ZHEJIANG UNIPOWER BOILER Co.,Ltd. |
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