CN102997220B - Atmospheric waste heat recovery thermal deaeration device - Google Patents
Atmospheric waste heat recovery thermal deaeration device Download PDFInfo
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- CN102997220B CN102997220B CN201210584398.9A CN201210584398A CN102997220B CN 102997220 B CN102997220 B CN 102997220B CN 201210584398 A CN201210584398 A CN 201210584398A CN 102997220 B CN102997220 B CN 102997220B
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Abstract
The invention relates to an atmospheric waste heat recovery thermal deaeration device. The atmospheric waste heat recovery thermal deaeration device comprises a deoxidizing water tank (1) and is characterized in that a condensate water pipe (2), a softened water pipe (52) and a steam pipeline (3) are connected into the deoxidizing water tank (1), the condensate water pipe (2) collects condensate water generated by equipment, softened water of the softened water pipe (52) comes from tap water processed by a sodion exchanger, hot steam of the steam pipeline (3) comes from a boiler or an air dividing cylinder, un-deoxidized water after mixing of condensate water and softened water which are received by the deoxidizing water tank (1) achieves deoxidizing during warming process of the steam to be supplied to a steam boiler (4). The atmospheric waste heat recovery thermal deaeration device integrates equipment used for waste heat recovery, thermal deaeration, dosing deoxidizing and the like, can not only meet boiler water standards, but also effectively utilizes waste heat of boiler pollution discharge, saves energy, and meets the boiler water standards under atmospheric pressure.
Description
Technical field
The present invention relates to a kind of deaerating type of cycles of boiler, especially relate to a kind of deaerating type of cycles of automatic steam boiler.
Background technology
The soft water heated in automatic steam boiler can contain oxygen usually, if can not remove the oxygen in soft water, the time for a long time then can corrode boiler body, affects the service life of boiler.
The deaerating type of cycles of automatic steam boiler, general employing low level heating power thermal deaerator is boiler feed water deoxygenation, also will have softening water tank or the auxiliary equipment such as condensation water tank, deoxygenation pump in deaerating type of cycles.The concentrated automatic pollution discharge of boiler and boiler timing blowdown generally directly enter cooling tank.
The deaerating type of cycles of automatic steam boiler, general employing low level heating power thermal deaerator is boiler feed water deoxygenation, low level, heating power deaerator is pressure vessel, there is certain danger, after needing special equipment inspection center to check, can use, during use, deaerated water water temperature should keep 104 degrees Celsius, can reach the water supply standard of Industrial Boiler, comparatively waste energy.Also to there be softening water tank or the auxiliary equipment such as condensation water tank, deoxygenation pump in deaerating type of cycles, take up an area large, invest also large.The concentrated automatic pollution discharge of boiler and boiler timing blowdown generally directly enter cooling tank, and used heat does not utilize, and wastes the energy.
Summary of the invention
The present invention devises a kind of atmospheric waste heat recovery thermal deaeration device, and its technical problem solved is:
(1) existing low level, heating power deaerator is pressure vessel;
(2) existing deaerated water water temperature requires maintenance 104 degrees Celsius usually, can reach the water supply standard of Industrial Boiler, comparatively waste energy;
(3) also to there be softening water tank or the auxiliary equipment such as condensation water tank, deoxygenation pump in existing deaerating type of cycles, take up an area large, invest also large;
(4) the concentrated automatic pollution discharge of automatic steam boiler and boiler timing blowdown generally directly enter cooling tank, and used heat does not utilize, and wastes the energy.
In order to solve the technical problem of above-mentioned existence, present invention employs following scheme:
A kind of atmospheric waste heat recovery thermal deaeration device, comprise deoxygenation water tank (1), it is characterized in that: condensate pipe (2), demineralized water water inlet pipe (52) and jet chimney (3) access deoxygenation water tank (1), the condensed water that condensate pipe (2) collecting device produces, the demineralized water of demineralized water water inlet pipe (52) is from the running water through Na-ion exchanger process, the vapours of jet chimney (3) is from boiler or sub-cylinder, the condensed water that deoxygenation water tank (1) receives and demineralized water mixed non-deaerated water are realized deoxygenation and are used for steam boiler (4) in steam temperature-rise period.
Further, the pipeline between steam boiler (4) and deoxygenation water tank (1) is also connected with deoxygenation chemicals dosing plant (42).
Further, when the water level in deoxygenation water tank (1) is lower than the water level required, deoxygenation water tank (1) is by demineralized water water inlet pipe (52) after softening water.
Further, first carry out heat exchange process by Waste Heat Recovery water tank (5) before demineralized water access deoxygenation water tank (1), the heat in Waste Heat Recovery water tank (5) is from boiler blow-off thing.
Further, be provided with heat exchange coil (57) in Waste Heat Recovery water tank (5), demineralized water carries out heat exchange by heat exchange coil (57) and the boiler blow-off thing in Waste Heat Recovery water tank (5).
Further, Waste Heat Recovery water tank (5) and deoxygenation water tank (1) become one part, and Waste Heat Recovery water tank (5) is isolated by thermal insulation board (7) and deoxygenation water tank (1).
Further, a blowdown flash-off steam pipe (6) is also connected between Waste Heat Recovery water tank (5) with deoxygenation water tank (1).
Further, deoxygenation water tank (1) is also provided with deoxygenation water tank overflow pipe (16), deoxygenation water tank drainpipe (17) and blast pipe (15).
Further, Waste Heat Recovery water tank (5) is also provided with return water tank overflow pipe (55) and return water tank drainpipe (56).
Further, Waste Heat Recovery water tank (5) and deoxygenation water tank (1) are all work at one atm.
This atmospheric waste heat recovery thermal deaeration device, compared with existing deaerating type of cycles, has following beneficial effect:
(1) equipment such as Waste Heat Recovery, thermal de-aeration, dosing deoxygenation combine together by the present invention, can meet boiler feed water standard, effectively make use of again the used heat of boiler blow-off, save the energy, and meet boiler feed water standard at atmosheric pressure.
(2) The present invention reduces deoxygenation water pump, softening water tank and condensation water tank to use, even can become one Waste Heat Recovery water tank and deoxygenation water tank part, decreases floor space, saved equipment investment.
Accompanying drawing explanation
Fig. 1 is the first structural representation of atmospheric waste heat recovery thermal deaeration device of the present invention;
Fig. 2 is atmospheric waste heat recovery thermal deaeration device the second structural representation of the present invention.
Description of reference numerals:
1-deoxygenation water tank; 11-steam jet ejector; 12-thermometer; 13-level sensor; 14-deoxygenation water tank temperature sensor; 15-blast pipe; 16-deoxygenation water tank overflow pipe; 17-deoxygenation water tank drainpipe; 171-draining valve; 2-condensate pipe; 21-valve; 3-jet chimney; 31-steam pressure-reducing system; 32-temperature control system; 4-steam boiler; 41-small pump; 42-deoxygenation chemicals dosing plant; 43-valve; 5-Waste Heat Recovery water tank; 51-boiler blow-off water inlet pipe; 511-blowdown water inlet pipe valve; 52-demineralized water water inlet pipe; 521-soft water enters valve; 522-soft water goes out valve; 53-first by-pass valve control group; 54-second by-pass valve control group; 55-return water tank overflow pipe; 56-return water tank drainpipe; 57-heat exchange coil; 58-bypass valve; 59-return water tank temperature sensor; 6-blowdown flash-off steam pipe; 7-thermal insulation board.
Detailed description of the invention
Below in conjunction with Fig. 1 and Fig. 2, the present invention will be further described:
As shown in Figure 1, a kind of atmospheric waste heat recovery thermal deaeration device, comprise deoxygenation water tank 1, condensate pipe 2, demineralized water water inlet pipe 52 and jet chimney 3 access deoxygenation water tank 1, the condensed water that condensate pipe 2 collecting device produces, the demineralized water of demineralized water water inlet pipe 52 is from the running water through Na-ion exchanger process, the vapours of jet chimney 3 is from boiler or sub-cylinder, and the condensed water that deoxygenation water tank 1 receives and demineralized water mixed non-deaerated water are realized deoxygenation and use for steam boiler 4 in steam temperature-rise period.
Specifically, the condensed water that equipment collects enters into deoxygenation water tank 1 by condensate pipe 2, and condensate pipe 2 is provided with valve 21.Jet chimney 3 is provided with steam pressure-reducing system 31 and temperature control system 32.Pipeline between steam boiler 4 and deoxygenation water tank 1 is also connected with valve 43, deoxygenation chemicals dosing plant 42 and small pump 41.Deoxygenation water tank 1 outside is provided with deoxygenation water tank overflow pipe 16, deoxygenation water tank drainpipe 17 and blast pipe 15.Deoxygenation water tank 1 inside is provided with steam jet ejector 11, thermometer 12, level sensor 13 and deoxygenation water tank temperature sensor 14.Deoxygenation water tank temperature sensor 14 is connected with the electrically operated valve in temperature control system 32.
Demineralized water enters in the heat exchange coil 57 of Waste Heat Recovery water tank 5 by demineralized water water inlet pipe 52, demineralized water through heat exchange coil 57 heat exchange enters into deoxygenation water tank 1 by demineralized water water inlet pipe 52 again, demineralized water water inlet pipe 52 is provided with the first by-pass valve control group 53, first by-pass valve control group 53 comprises electrically operated valve and stop valve, and the electrically operated valve in the first by-pass valve control group 53 is connected with level sensor 13.In addition, demineralized water water inlet pipe 52 is respectively equipped with soft water and enters valve 521 and soft water goes out valve 522 entering Waste Heat Recovery water tank 5 entrance and exit.The demineralized water water inlet pipe 52 of Waste Heat Recovery water tank 5 entrance and exit also connects bypass line, bypass duct is provided with bypass valve 58.Waste Heat Recovery water tank 5 is also provided with return water tank overflow pipe 55 and return water tank drainpipe 56.Return water tank drainpipe 56 is provided with the second by-pass valve control group 54, second by-pass valve control group 54 and comprises electrically operated valve and stop valve, and the electrically operated valve in the second by-pass valve control group 54 is connected with return water tank TEMP 59.A blowdown flash-off steam pipe 6 is also connected between Waste Heat Recovery water tank 5 with deoxygenation water tank 1.
The operation principle of atmospheric waste heat recovery thermal deaeration device of the present invention is as follows: the condensed water that equipment collects enters into deoxygenation water tank 1 by condensate pipe 2 and demineralized water by demineralized water water inlet pipe 52, condensed water itself has certain temperature, the vapours of jet chimney 3 heats mixed non-deaerated water, in the process of heating, make mixed non-deoxygenation water deoxygenation, become half deaerated water.
Industrial Boiler water standard: the dissolved oxygen of automatic steam boiler is 0.1mg/L.The pass of water oxygen level and temperature, pressure is table 1.
Table 1 unit: mg/L
Half deaerated water is delivered in steam boiler 4.Before entering steam boiler 4, by deoxygenation chemicals dosing plant 42 deoxygenation further, can also can meet the boiler feed water standard of Industrial Boiler water standard completely through dosing deoxygenation.
When the water level in deoxygenation water tank 1 is lower than the water level required, deoxygenation water tank 1 is by demineralized water water inlet pipe 52 after softening water.Demineralized water, before entering deoxygenation water tank 1, can utilize the heat in boiler blow-off to carry out heat exchange process, and the temperature of raising demineralized water is simultaneously maximized utilizes boiler blow-off.This heat transfer process occurs in Waste Heat Recovery water tank 5.During because of boiler blow-off, when blowdown thing with pressure is discharged to Waste Heat Recovery water tank, indirect steam (flash steam) after the step-down of blowdown thing, the flash steam produced makes Waste Heat Recovery water tank 5 pressure bigger, pressure release and transfer of heat can be carried out by blowdown flash-off steam pipe 6, make full use of the heat of boiler blow-off.
Deoxygenation water tank 1 can control the liquid level of deoxygenation water tank 1 by deoxygenation water tank overflow pipe 16, drain water unnecessary in deoxygenation water tank 1 and got rid of by the oxygen be separated by blast pipe 15 by deoxygenation water tank drainpipe 17.
Waste Heat Recovery water tank 5 controls the liquid level of Waste Heat Recovery water tank 5 by return water tank overflow pipe 55 and drains water unnecessary in Waste Heat Recovery water tank 5 and boiler blow-off by return water tank drainpipe 56.
When not having boiler blow-off thing or boiler blow-off thing without heat exchange possibility, demineralized water directly enters in deoxygenation water tank 1 by the bypass duct on demineralized water water inlet pipe 52, simplifies and flows through step.
As shown in Figure 2, the atmospheric waste heat recovery thermal deaeration device in Fig. 2 and the maximum distinctive points of the atmospheric waste heat recovery thermal deaeration device in Fig. 1 are: Waste Heat Recovery water: 5 with the arrangement of deoxygenation water tank 1.Become one Waste Heat Recovery water tank 5 and deoxygenation water tank 1 in Fig. 2 part, and Waste Heat Recovery water tank 5 is isolated by thermal insulation board 7 and deoxygenation water tank 1.Design like this, makes atmospheric waste heat recovery thermal deaeration device volume less, and structure is simple, reduces equipment and takes up an area.
This atmospheric waste heat recovery thermal deaeration device, compared with existing deaerating type of cycles, has following beneficial effect:
(1) equipment such as Waste Heat Recovery, thermal de-aeration, dosing deoxygenation combine together by the present invention, can meet boiler feed water standard, effectively make use of again the used heat of boiler blow-off, save the energy, and meet boiler feed water standard at atmosheric pressure.
(2) The present invention reduces deoxygenation water pump, softening water tank and condensation water tank to use, even can become one Waste Heat Recovery water tank and deoxygenation water tank part, decreases floor space, saved equipment investment.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious realization of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all in protection scope of the present invention without to improve.
Claims (8)
1. an atmospheric waste heat recovery thermal deaeration device, comprise deoxygenation water tank (1), it is characterized in that: condensate pipe (2), demineralized water water inlet pipe (52) and jet chimney (3) access deoxygenation water tank (1), the condensed water that condensate pipe (2) collecting device produces, the demineralized water of demineralized water water inlet pipe (52) is from the running water through Na-ion exchanger process, first heat exchange process is carried out by Waste Heat Recovery water tank (5) before demineralized water access deoxygenation water tank (1), heat in Waste Heat Recovery water tank (5) is from boiler blow-off thing, Waste Heat Recovery water tank (5) and deoxygenation water tank (1) become one part, Waste Heat Recovery water tank (5) is isolated by thermal insulation board (7) and deoxygenation water tank (1), the vapours of jet chimney (3) is from boiler or sub-cylinder, and the condensed water that deoxygenation water tank (1) receives and demineralized water mixed non-deaerated water are realized deoxygenation and use for steam boiler (4) in steam temperature-rise period.
2. atmospheric waste heat recovery thermal deaeration device according to claim 1, is characterized in that: the pipeline between steam boiler (4) and deoxygenation water tank (1) is also connected with deoxygenation chemicals dosing plant (42).
3. atmospheric waste heat recovery thermal deaeration device according to claim 1, it is characterized in that: when the water level in deoxygenation water tank (1) is lower than the water level required, deoxygenation water tank (1) is by demineralized water water inlet pipe (52) after softening water.
4. atmospheric waste heat recovery thermal deaeration device according to claim 1, it is characterized in that: be provided with heat exchange coil (57) in Waste Heat Recovery water tank (5), demineralized water carries out heat exchange by heat exchange coil (57) and the boiler blow-off thing in Waste Heat Recovery water tank (5).
5. atmospheric waste heat recovery thermal deaeration device according to claim 1, is characterized in that: be also connected a blowdown flash-off steam pipe (6) between Waste Heat Recovery water tank (5) with deoxygenation water tank (1).
6. atmospheric waste heat recovery thermal deaeration device according to claim 1, is characterized in that: deoxygenation water tank (1) is also provided with deoxygenation water tank overflow pipe (16), deoxygenation water tank drainpipe (17) and blast pipe (15).
7. atmospheric waste heat recovery thermal deaeration device according to claim 1, is characterized in that: Waste Heat Recovery water tank (5) is also provided with return water tank overflow pipe (55) and return water tank drainpipe (56).
8. atmospheric waste heat recovery thermal deaeration device according to claim 1, is characterized in that: Waste Heat Recovery water tank (5) and deoxygenation water tank (1) are all work at one atm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210584398.9A CN102997220B (en) | 2012-12-31 | 2012-12-31 | Atmospheric waste heat recovery thermal deaeration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210584398.9A CN102997220B (en) | 2012-12-31 | 2012-12-31 | Atmospheric waste heat recovery thermal deaeration device |
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| CN102997220A CN102997220A (en) | 2013-03-27 |
| CN102997220B true CN102997220B (en) | 2015-01-21 |
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| CN201052425Y (en) * | 2007-05-30 | 2008-04-30 | 穆丽芸 | Diaphragm type deaerator |
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| CN102183009A (en) * | 2011-05-13 | 2011-09-14 | 江苏双良锅炉有限公司 | Water supply system of condensing steam boiler |
| CN102607014A (en) * | 2012-03-31 | 2012-07-25 | 河南中烟工业有限责任公司 | Boiler water replenishing system capable of collecting waste heat and condensed water |
| CN203068483U (en) * | 2012-12-31 | 2013-07-17 | 北京富士特锅炉有限公司 | Atmospheric waste heat recovery thermal oxygen-removing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002005402A (en) * | 2000-06-23 | 2002-01-09 | Takuma Co Ltd | Waste heat recovery system for refuse disposal plant |
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- 2012-12-31 CN CN201210584398.9A patent/CN102997220B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201052425Y (en) * | 2007-05-30 | 2008-04-30 | 穆丽芸 | Diaphragm type deaerator |
| CN102173555A (en) * | 2011-03-16 | 2011-09-07 | 上海伏波环保设备有限公司 | Boiler unit steam extraction and drying sludge system with thermal compensation |
| CN102183009A (en) * | 2011-05-13 | 2011-09-14 | 江苏双良锅炉有限公司 | Water supply system of condensing steam boiler |
| CN102607014A (en) * | 2012-03-31 | 2012-07-25 | 河南中烟工业有限责任公司 | Boiler water replenishing system capable of collecting waste heat and condensed water |
| CN203068483U (en) * | 2012-12-31 | 2013-07-17 | 北京富士特锅炉有限公司 | Atmospheric waste heat recovery thermal oxygen-removing device |
Non-Patent Citations (1)
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| JP特开2002-5402A 2002.01.09 * |
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