CN202973063U - Boiler feed water deoxidization degassing device - Google Patents
Boiler feed water deoxidization degassing device Download PDFInfo
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- CN202973063U CN202973063U CN 201220681826 CN201220681826U CN202973063U CN 202973063 U CN202973063 U CN 202973063U CN 201220681826 CN201220681826 CN 201220681826 CN 201220681826 U CN201220681826 U CN 201220681826U CN 202973063 U CN202973063 U CN 202973063U
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- deoxidation
- water
- degasser
- deoxidization
- boiler
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Abstract
The utility model relates to a boiler feed water deoxidization degassing device. The boiler feed water deoxidization degassing device comprises a softened water source, a deoxidization degassing device, a deoxidization degassing water storage tank, a boiler feed water system, a steam source, a heating device, and a cooling water recycling system. The heating device is a U-shaped tube heat exchanger. The deoxidization degassing device comprises a deoxidization degassing condenser and a deoxidization degassing tower. The softened water source is divided into two branches, one branch is connected with the deoxidization degassing water storage tank, and the other branch is connected with the deoxidization degassing condenser. The deoxidization degassing tower is connected with the deoxidization degassing water storage tank. The deoxidization degassing water storage tank is connected with the boiler feed water system. The steam source is connected with the U-shaped tube heat exchanger through a steam delivery pipeline. The U-shaped tube heat exchanger is connected with the cooling water recycling system and is arranged in the deoxidization degassing water storage tank. The boiler feed water deoxidization degassing device is stable in operation, good in deoxidization effects, and obvious in energy-saving effects.
Description
Technical field
The utility model relates to water treatment field, is specifically related to a kind of boiler supply water deaerating degasser.
Background technology
China present stage boiler duty is greater than 2 tons/hour, it is degassed that boiler feedwater all needs to carry out deoxygenation, prevent dissolved oxygen and other corrosive gas in boiler feedwater, under the operating mode of HTHP, drum and pipeloop shadow to boiler play serious spot corrosion, shorten the service life and the safe operation that affects boiler of boiler.
The technique of the deoxygenation of boiler feedwater mainly contains chemical deoxidization and atmospheric-type thermodynamic deoxidizing at present, and this technique is mainly to research and develop for the more atmospheric-type thermodynamic deoxidizing technological principle of domestic operation.
the more boiler deoxidizing method technique of present domestic use is mainly atmospheric-type thermodynamic deoxidizing technique, this deoxyprocess comprises the deaerated water basin, the deoxygenation head, three kinds of capital equipments of supporting deoxygenation water pump, thereby this technique is boiler soft water evenly to be sprayed onto low-pressure steam that packed tower and deoxygenation head on the deoxygenation head spray into and to carry out heat exchange and improve feed temperature to 104 ℃ from enter shower nozzle by the deoxygenation head of deoxygenation head, make the dissolved oxygen solubility reduction in feedwater reach deaerating effect, this deoxyprocess has also increased by one road assisted heating device in deaerated water basin bottom in addition, assisted heating device is directly to spray in the water of storage oxygen water pot with steam, to replenish the water temperature that improves in the not enough situation of a deoxygenation heat-exchange capacity in the deoxygenation water pot.
Following deficiency and problem appear in this deoxyprocess in actual motion:
1, be in operation and following problem (1) occur when the deaerator feedwater amount increases suddenly in the steam heat exchange process of deaerator feedwater and deoxygenation head, cause the air intake oxygen-eliminating device because a deoxygenation temperature and pressure descends.(2) when deaerator feedwater reduces suddenly, steam control valve untimely meeting in adjustment process causes a large amount of steam directly to enter a large amount of steam of waste in atmosphere.
2, the blast pipe due to oxygen-eliminating device deoxygenation head is directly open to atmosphere, in addition the Steam pressure control device of deoxygenation head be also the middle and upper part that is contained in the deoxygenation head from blast pipe very close to, in order to stablize the controlled pressure of deoxygenation head, often need excess steam to add to the deoxygenation head, directly cause a deoxygenation blast pipe to have for a long time steam to enter in atmosphere, and entrapped moisture has been wasted a large amount of energy.
3, in this technique, the most fatal scarce limit is assisted heating device, because steam directly is filled with in water in a large number, causes the vibration of the serious water attack of deoxygenation water pot and equipment, has had a strong impact on the safe operation of deaeration plant and the factory building safety of boiler room.
Summary of the invention
According to the deficiency that prior art exists, the utility model provides a kind of boiler supply water deaerating degasser.This device is stable, deaerating effect good, energy-saving effect is obvious.
deficiency according to the prior art existence, the technical scheme that the utility model provides is: a kind of boiler supply water deaerating degasser, comprise demineralized water water source (1), the deoxidation degasser, deoxidation de aerated water storage (5), the feed water system of boiler (15), steam source of the gas (9), heater and cooling water recovery system (8), described heater is U-shaped heat exchange of heat pipe (10), described deoxidation degasser comprises deoxidation degasser condenser (3) and deoxidation degassing tower (4), described demineralized water water source (1) is divided into two branch roads, one branch road is connected with deoxidation de aerated water basin (5), another branch road is connected with deoxidation degasser condenser (3), deoxidation degasser condenser (3) is connected with deoxidation degassing tower (4), deoxidation degassing tower (4) is connected with deoxidation de aerated water basin (5), deoxidation de aerated water basin (5) is connected with the feed water system of boiler (15), steam source of the gas (9) is connected with U-shaped heat exchange of heat pipe (10) by steam conveying pipe (12), U-shaped heat exchange of heat pipe (10) is connected with cooling water recovery system (8), U-shaped heat exchange of heat pipe (10) is placed in deoxidation de aerated water basin (5).
The blast pipe of described deoxidation degassing tower (4) is provided with restricting orifice (16).
The described feed water system of boiler (15) is connected with deoxidation de aerated water basin (5), and forms the circulatory system, controls by Self-pressure stabilizing valve (6).
Described deoxidation desalted water basin (5) cylindrical shell is equipped with safety valve (14).
Be provided with fluid level control valve (7) and the first pneumatic control valve (2) between described demineralized water water source (1) and deoxidation de aerated water basin (5).
Described steam conveying pipe (12) is provided with by-pass line (13), and by-pass line (13) is connected with deoxidation degassing tower (4).
Described deoxidation degassing tower (4) is to adopt board-like deoxidation degassing tower.
The beneficial effects of the utility model are: the utility model utilizes a U-shaped pipe heater to replace the assisted heating device of traditional deoxyprocess, the strong water attack that has formed when having avoided steam with pressure to pour in water, and the vibration of the equipment that causes, the pipeline that connects with equipment, Equipment Foundations and factory building has ensured the steady safe operation of equipment.
The utility model has increased degassed overhead condenser on deoxidation degassing tower gas exhaust piping, degassed overhead condenser can effectively reclaim the heat of deoxidation degassing tower Exhaust Gas, and the water vapour condensation in Exhaust Gas can be got off to come back to deoxidation de aerated water basin and use.
Description of drawings
The structural representation of accompanying drawing 1 the utility model embodiment one;
The cutaway view of the restricting orifice in accompanying drawing 2 the utility model embodiment one.
The structural representation of the restricting orifice in accompanying drawing 3 the utility model embodiment one.
Wherein, 1-demineralized water water source, 2-the first pneumatic control valve, 3-deoxidation dehydration condenser, 4-deoxidation dehydrating tower, 5-deoxidation dehydration basin, 6-Self-pressure stabilizing valve, 7-fluid level control valve, 8-cooling water recovery system, 9-steam source of the gas, 10-U type heat exchange of heat pipe.11-the second pneumatic control valve, 12-steam conveying pipe, 13-by-pass line, 14-safety valve, the 15-feed water system of boiler, 16-restricting orifice.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Embodiment one
a kind of boiler supply water deaerating degasser, comprise demineralized water water source 1, the deoxidation degasser, deoxidation de aerated water basin 5, the feed water system of boiler 15, steam source of the gas 9, heater and cooling water recovery system 8, described heater is U-shaped heat exchange of heat pipe 10, described deoxidation degasser comprises deoxidation degasser condenser 3 and deoxidation degassing tower 4, described demineralized water water source 1 is divided into two branch roads, one branch road is connected with deoxidation de aerated water basin 5, another branch road is connected with deoxidation degasser condenser 3, deoxidation degasser condenser 3 is connected with deoxidation degassing tower 4, deoxidation degassing tower 4 is connected with deoxidation de aerated water basin 5, deoxidation de aerated water basin 5 is connected with the feed water system of boiler 15, steam source of the gas 9 is connected with U-shaped heat exchange of heat pipe 10 by steam conveying pipe 12, U-shaped heat exchange of heat pipe 10 is connected with cooling water recovery system 8, U-shaped heat exchange of heat pipe 10 is placed in deoxidation de aerated water basin 5.The utility model utilizes a U-shaped pipe heater to replace the assisted heating device of traditional deoxyprocess, the strong water attack that has formed when having avoided steam with pressure to pour in water, and the vibration of the equipment that causes, the pipeline that connects with equipment, Equipment Foundations and factory building has ensured the steady safe operation of equipment.The utility model has increased degassed overhead condenser on deoxidation degassing tower gas exhaust piping, degassed overhead condenser can effectively reclaim the heat of deoxidation degassing tower Exhaust Gas, and the water vapour condensation in Exhaust Gas can be got off to come back to deoxidation de aerated water basin and use.The utility model has saved deoxidation degassing tower spray vapour device, adopt the degassed basin of deoxidation to add the water that thermogenetic water vapour and degassing tower column plate get off and carry out sufficient heat exchange, time and stroke that vapour-liquid mass conducts heat have been extended, improved heat transfer efficiency, be conducive to incoagulable gas and separate out from water.
The blast pipe of described deoxidation degassing tower 4 is provided with restricting orifice 16.The utility model has increased by a restricting orifice 16 on the blast pipe of deoxidation degassing tower, can effectively reduce the moisture entrainment of Exhaust Gas, reduce vapour losses, can also prevent deoxidation degassing tower air suck-back phenomenon simultaneously, make deoxidation degassing tower pressure in running more stable.
The described feed water system of boiler 15 is connected with deoxidation de aerated water basin 5, and forms the circulatory system, controls by Self-pressure stabilizing valve 6.The utility model has increased a Self-pressure stabilizing valve at boiler feed pump to water-circulation pipe, and the boiler feedwater load is when larger variation occurs, and this valve can open and close automatically, and can guarantee the boiler constant pressure water supply.
Described deoxidation desalted water basin 5 cylindrical shells are equipped with safety valve 14.Deoxidation desalted water basin cylindrical shell of the present utility model has been installed a safety valve, when preventing that superpressure appears in the deoxidation degas system in unexpected situation, can in time release, and assurance equipment can safe operation.
Be provided with fluid level control valve 7 and the first pneumatic control valve 2 between described demineralized water water source 1 and deoxidation de aerated water basin 5.
Described steam conveying pipe 12 is provided with by-pass line 13, and by-pass line 13 is connected with deoxidation degassing tower 4.
Described deoxidation degassing tower 4 is to adopt board-like deoxidation degassing tower.Deoxidation degassing tower of the present utility model is the board-like deoxidation degassing tower that adopts comparative maturity, and do not adopt the packed tower of traditional deoxidation degasification technique, save the ejecting device to water distribution pipe, reduced because shower nozzle stops up the parking maintenance time that causes, reduced the plant maintenance workload.
the demineralized water of 80～90 ℃ is by the demineralized water feed system, the first pneumatic control valve 2 and fluid level control valve 7, enter into 3 preheatings of deoxidation degasser condenser, be warming up to 93 ℃, be added to the degassed tower top feedwater of deoxidation distribution plate, then by deoxidation degassing tower 4, carrying out vapour-liquid with the water vapour that rises from deoxidation de aerated water basin 5 conducts heat, the mass transfer exchange, water temperature is raised to 104 ℃, oxygen in demineralized water and other incoagulable gas overflow, entering into 3 pairs of demineralized waters of deoxidation degasser condenser by the restricting orifice on blast pipe heats, and self be condensed into water, condensate return is to deoxidation degassing tower 4, incoagulable gas is drained in atmosphere by blast pipe.The aperture of pneumatic control valve 2 is controlled automatically by the fluid level control valve 7 of deoxidation de aerated water basin.
The steam source of the gas 9 of the 0.3MPa that comes from the steam supply system, by the second pneumatic control valve 11, join the U-shaped heat exchange of heat pipe 10 in deoxidation de aerated water basin 5, boiler water to 5 li of deoxidation de aerated water basins heats, the boiler water generation water vapour that is heated, the water that rises to deoxidation degassing tower 4 and 4 li of deoxidation degassing towers carries out heat exchange.Steam source of the gas 9 is condensed into the low-pressure steam condensed water after by U-shaped heat exchange of heat pipe 10, and the low-pressure steam condensed water is got back to cooling water recovery system 8 by the drain valve on pipeline.
The deoxidation de aerated water that deoxidation de aerated water basin is 5 li passes through boiler feed pump, deliver to continuously downstream each boiler user, when user's water load in downstream changes, the boiler feedwater pump discharge pressure also can change, at this moment, Self-pressure stabilizing valve 7 on the boiler feed pump pipeloop can open and close automatically to regulate loine pressure, makes boiler water supply pressure keep stable, and self-operated type voltage stabilizing 7 valve pressure are adjusted in 12kgf/cm
2, this pressure is regulated can be according to user's working pressure manual adjustments.
When low liquid level warning occured for 5 of deoxidation de aerated water basin liquid, the liquid level control signal LALL of deoxidation de aerated water basin 5 can interlock and cut off the boiler feedwater pumping source, makes boiler feed pump out of service, in case feed pump occur unloaded gentle deteriorate bad.
Claims (2)
1. boiler supply water deaerating degasser, comprise demineralized water water source (1), the deoxidation degasser, deoxidation de aerated water storage (5), the feed water system of boiler (15), steam source of the gas (9), heater and cooling water recovery system (8), it is characterized in that: described heater is U-shaped heat exchange of heat pipe (10), described deoxidation degasser comprises deoxidation degasser condenser (3) and deoxidation degassing tower (4), described demineralized water water source (1) is divided into two branch roads, one branch road is connected with deoxidation de aerated water basin (5), another branch road is connected with deoxidation degasser condenser (3), deoxidation degasser condenser (3) is connected with deoxidation degassing tower (4), deoxidation degassing tower (4) is connected with deoxidation de aerated water basin (5), deoxidation de aerated water basin (5) is connected with the feed water system of boiler (15), steam source of the gas (9) is connected with U-shaped heat exchange of heat pipe (10) one ends by steam conveying pipe (12), U-shaped heat exchange of heat pipe (10) other end is connected with cooling water recovery system (8), U-shaped heat exchange of heat pipe (10) is placed in deoxidation de aerated water basin (5).
2. a kind of boiler supply water deaerating degasser as claimed in claim 1, it is characterized in that: the blast pipe of described deoxidation degassing tower (4) is provided with restricting orifice (16).
3, a kind of boiler supply water deaerating degasser as claimed in claim 1, it is characterized in that: the described feed water system of boiler (15) is connected with deoxidation de aerated water basin (5), and forms the circulatory system, controls by Self-pressure stabilizing valve (6).
4, a kind of boiler supply water deaerating degasser as claimed in claim 1, it is characterized in that: described deoxidation desalted water basin (5) cylindrical shell is equipped with safety valve (14).
5, a kind of boiler supply water deaerating degasser as claimed in claim 1 is characterized in that: be provided with fluid level control valve (7) and the first pneumatic control valve (2) between described demineralized water water source (1) and deoxidation de aerated water basin (5).
6, a kind of boiler supply water deaerating degasser as claimed in claim 1, it is characterized in that: described steam conveying pipe (12) is provided with by-pass line (13), and by-pass line (13) is connected with deoxidation degassing tower (4).
7, a kind of boiler supply water deaerating degasser as claimed in claim 1 is characterized in that: described deoxidation degassing tower (4) is to adopt board-like deoxidation degassing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681826 CN202973063U (en) | 2012-12-07 | 2012-12-07 | Boiler feed water deoxidization degassing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681826 CN202973063U (en) | 2012-12-07 | 2012-12-07 | Boiler feed water deoxidization degassing device |
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| Publication Number | Publication Date |
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| CN202973063U true CN202973063U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220681826 Expired - Lifetime CN202973063U (en) | 2012-12-07 | 2012-12-07 | Boiler feed water deoxidization degassing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990065A (en) * | 2015-06-11 | 2015-10-21 | 江苏永钢集团有限公司 | Boiler feed water circulating deoxidation system in turbine generator set |
| CN105180672A (en) * | 2015-10-26 | 2015-12-23 | 张斌 | Energy-saving optimization device adopting intelligent temperature control technology to improve vacuum degree of condenser |
| CN105358909A (en) * | 2013-07-05 | 2016-02-24 | 西门子公司 | Method for preheating feed water in steam power plants, with process steam outcoupling |
| CN105605552A (en) * | 2016-03-15 | 2016-05-25 | 山东钢铁股份有限公司 | Heat energy recycling device for steam exhaust of deaerator in boiler steam turbine system |
| CN108745227A (en) * | 2018-07-10 | 2018-11-06 | 天津辰力工程设计有限公司 | A kind of novel cooling system and cooling technique for graphiote reactor |
-
2012
- 2012-12-07 CN CN 201220681826 patent/CN202973063U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358909A (en) * | 2013-07-05 | 2016-02-24 | 西门子公司 | Method for preheating feed water in steam power plants, with process steam outcoupling |
| CN105358909B (en) * | 2013-07-05 | 2017-10-24 | 西门子公司 | Method for coupling the supplement water in output pre-heating steam power plant by process steam |
| US9890948B2 (en) | 2013-07-05 | 2018-02-13 | Siemens Aktiengesellschaft | Method for preheating feed water in steam power plants, with process steam outcoupling |
| CN104990065A (en) * | 2015-06-11 | 2015-10-21 | 江苏永钢集团有限公司 | Boiler feed water circulating deoxidation system in turbine generator set |
| CN105180672A (en) * | 2015-10-26 | 2015-12-23 | 张斌 | Energy-saving optimization device adopting intelligent temperature control technology to improve vacuum degree of condenser |
| CN105605552A (en) * | 2016-03-15 | 2016-05-25 | 山东钢铁股份有限公司 | Heat energy recycling device for steam exhaust of deaerator in boiler steam turbine system |
| CN108745227A (en) * | 2018-07-10 | 2018-11-06 | 天津辰力工程设计有限公司 | A kind of novel cooling system and cooling technique for graphiote reactor |
| CN108745227B (en) * | 2018-07-10 | 2020-06-09 | 天津辰力工程设计有限公司 | Cooling system and cooling process for graphite reactor |
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Granted publication date: 20130605 |
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| CX01 | Expiry of patent term |