CN102425802B - Air blowing dehumidifying and heating steam boiler system with deaerator - Google Patents
Air blowing dehumidifying and heating steam boiler system with deaerator Download PDFInfo
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- CN102425802B CN102425802B CN2011104219565A CN201110421956A CN102425802B CN 102425802 B CN102425802 B CN 102425802B CN 2011104219565 A CN2011104219565 A CN 2011104219565A CN 201110421956 A CN201110421956 A CN 201110421956A CN 102425802 B CN102425802 B CN 102425802B
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- lithium bromide
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to an air blowing dehumidifying and heating steam boiler system with a deaerator; after passing through an air filter, natural air enters a surface cooler and a demister, then is sent to an air heater and an air preheater through the air blower and finally enters a boiler; a steam exhaust outlet of the deaerator is connected with a steam inlet of a lithium bromide refrigerating machine; a steam condensate water outlet of the lithium bromide refrigerating machine is connected into a desalting water tank; a chilled water outlet of the lithium bromide refrigerating machine is connected with a surface cooler and a water inlet of a cooler of the demister; the surface cooler and a water outlet of the cooler of the demister are connected with a chilled water inlet of the lithium bromide refrigerating machine; a cooling water outlet of the lithium bromide refrigerating machine is connected with a heater water inlet of the air heater; and a heater water outlet of the air heater is connected with a water supply pipe of a cooling tower; and a water drainage pipe of the cooling tower is connected with the cooling water inlet of the lithium bromide refrigerating machine. The system has the advantages of being capable of reducing the power consumption of an air blower, reducing heat loss of discharge smoke, using oxygen removal steam exhaust and increasing heat efficiency of the system.
Description
Technical field
The present invention relates to a kind of therrmodynamic system, particularly a kind of air blast dehumidifying heating steam steam generator system with oxygen-eliminating device.
Background technology
In boiler and vapour system, O
2And CO
2Existence meeting corroding metal and produce the oxide salt crust, and incoagulability gas and oxide salt dirt deposition worsen heat-transfer effect.Therefore, removing the oxygen and other incoagulable gas that are dissolved in the boiler replenishing water as far as possible, is protection therrmodynamic system equipment uncorroded basic skills, also is to guarantee heat power equipment safety, efficiently move requisite means.Thermal deaerator is one of common equipment, its cardinal principle is according to Henry's law and Dalton's law, use steam with the saturation temperature of boiler replenishing water transient heating to a deoxygenation operating pressure correspondence, the pressure that makes steam in the oxygen-eliminating device deoxygenation head is total head, and the partial pressure of air becomes zero, the solubility of air in water also becomes zero, and air is all overflowed from moisturizing, has also removed other incoagulable gas in the time of deoxygenation.In the heat energy that steam discharged that consumes in the oxygen removal process, quite a few is discharged into atmosphere by oxygen-eliminating device exhaust steam floss hole, and the oxygen-eliminating device operating pressure is high more, the deoxygenation steam pressure is also high more, the exhaust steam discharge capacity is big more, has both caused very big thermal waste, again contaminated environment.
Natural air is made up of dry air and steam, promptly contains moisture in the natural air, and especially humidity high season, water capacity can reach 20g/Nm
3More than, than expanding surplus in the of 1600 in liquid lower volume times, so the moisture in the natural air has occupied certain volume to water under gaseous state.The relative humidity of air reaches at 100% o'clock, and airborne moisture reaches capacity, and the air themperature of this moment is called dew-point temperature, and when air themperature dropped to dew-point temperature, airborne water vapour will condense into dew.When fuel burns in boiler, need to consume a large amount of oxygen, in boiler, blow by air blast, air blast is when sending into oxygen, also the steam that will not participate in burning is sent into boiler, and steam becomes the high-temperature flue gas discharging after absorbing heat, has wasted a large amount of heat energy; In addition, because the existence of steam, air blast need be sent into more air to satisfy the needs of burning, has both increased power consumption, has increased heat loss due to exhaust gas again.
According to the second law of thermodynamics, heat can not spontaneously be transferred to high temp objects from cryogenic object, realize this process, must consume certain merit, just can make the temperature of cryogenic object lower, reaches the purpose of refrigeration.Lithium-bromide absorption-type refrigerating machine be a kind of be the refrigeration machine of power with the thermal source, mainly form by generator, condenser, evaporimeter, absorber four major parts and equipment such as heat exchanger and solution pump.Lithium bromide refrigerator inside is vacuum environment, for example the shell side of evaporimeter maintenance absolute pressure is 6.54mmHg, water is 5 ℃ of boilings, the water as refrigerant spirt is gone will explosive evaporation, tube side when the higher chilled water of temperature (for example the being 12 ℃) evaporimeter of flowing through, the water as refrigerant that sprays so outside copper pipe will and evaporate from copper pipe absorption heat, and the chilled water temperature in the copper pipe has just reduced (12 ℃ → 7 ℃); After the water as refrigerant evaporation, the pressure of evaporimeter will raise, and in order to keep the pressure very low (6.54mmHg) in the evaporimeter, absorber absorbs water vapour by the spray bromize lithium concentrated solution, lithium-bromide solution behind the absorption water vapour becomes weak solution, and concentration reduces can not absorb steam again; By generator weak solution is concentrated, it is thermal source that generator adopts steam usually, and weak solution is heated again, make the water evaporates in the weak solution after solution concentrated, keep absorbability; The isolated steam of generator is cooled off indirectly by cooling water in condenser, and the water as refrigerant of liquefy enters the evaporimeter spray again, so moves in endless cycles.Therefore the external pipeline of lithium bromide refrigerator has chilled water import, chilled water outlet; Cooling water inlet, coolant outlet; Steam inlet, steam condensate (SC) outlet.
Summary of the invention
The objective of the invention is to, overcome problems of the prior art, a kind of air blast dehumidifying heating steam steam generator system with oxygen-eliminating device is provided, can improve the efficiency of oxygen supply of air blast, reduce power consumption, reduce heat loss due to exhaust gas, the exhaust steam to oxygen-eliminating device simultaneously utilizes, and improves the thermal efficiency of whole system.
For solving above technical problem, the air blast dehumidifying heating steam steam generator system of band oxygen-eliminating device provided by the present invention, comprise that boiler reaches and the supporting air blast of boiler, air-introduced machine, sweet-water tank, small pump, oxygen-eliminating device and feed pump, small pump is sent to the demineralized water in the sweet-water tank water inlet of oxygen-eliminating device, the water outlet of oxygen-eliminating device is delivered to boiler by feed pump, also comprise air cleaner, surface-cooler and demister, air heater, air preheater, lithium bromide refrigerator and cooling tower, natural air enters surface-cooler and demister after air cleaner filters, enter air heater through air blast again, the outlet of air heater inserts air preheater, and the outlet of air preheater inserts the air inlet duct of boiler; The exhaust steam outlet of described oxygen-eliminating device is connected with the steam inlet of described lithium bromide refrigerator, and the steam condensate (SC) outlet of described lithium bromide refrigerator inserts described sweet-water tank; The chilled water outlet of described lithium bromide refrigerator is connected with the cooler water inlet of described surface-cooler and demister, and the cooler delivery port of described surface-cooler and demister is connected with the chilled water import of described lithium bromide refrigerator; The coolant outlet of described lithium bromide refrigerator is connected with the heater water inlet of described air heater, the heater delivery port of described air heater is connected with the cooling tower upper hose of described cooling tower, and the cooling tower outlet pipe of described cooling tower is connected with the cooling water inlet of described lithium bromide refrigerator.
With respect to prior art, the present invention has obtained following beneficial effect: (1) utilizes the exhaust steam of oxygen-eliminating device discharging to drive lithium bromide refrigerator and produces chilled water, effectively utilized the waste heat of exhaust steam, the steam condensate (SC) that comes out from lithium bromide refrigerator inserts sweet-water tank, both reclaim demineralized water itself, utilized the temperature of the waste heat raising demineralized water of steam condensate (SC) again.(2) surface-cooler and demister are united two into one by surface-cooler, demister and form, cryogenic freezing water enters surface-cooler, carry out indirect heat exchange with the air of the surface-cooler of flowing through, the temperature of air is cooled to below the dew-point temperature, airborne steam condenses into the globule, and flowing into automatic rhone along the surface cooler wall, the remaining water smoke of air quenched generation is then caught by demister and is entered automatic rhone; The cooled dry air that dehumidifies enters the inlet scoop of air blast, is sent to air heater by air blast, and cooled drying-air temperature reduces, and density increases, and blower efficiency improves, and the unit air volume power consumption reduces.(3) air is through after drying, and moisture descends significantly, and oxygen content increases, and has reduced air output, has also reduced the power consumption of air blast.(4) steam does not only participate in burning, and also will absorb heat becomes the high-temperature flue gas discharging, and air is through after drying, and the water vapour amount that is discharged in the atmosphere after the boiler heating descends, and heat loss due to exhaust gas descends significantly.(5) in the lithium bromide refrigerator, the caloric requirement that heat that the steam condensation is discharged and chilled water cooling are discharged is taken away by cooling water, for cooling water can be recycled, must use cooling tower that the cooling water after heating up is lowered the temperature, cooling water after the cooling reenters in the lithium bromide refrigerator, and the heat that cooling water is taken away is relevant with the flow of cooling water and the temperature difference; The high-temperature cooling water that the present invention will come out from lithium bromide refrigerator is at first delivered to air heater, in air heater, high-temperature cooling water and cold air carry out indirect heat exchange, the temperature of cold air is promoted, and temperature descends after the high-temperature cooling water release heat, enter the cooling tower cooling again, cooling water after the cooling tower cooling flows out from the cooling tower outlet pipe, reenter the cooling water inlet of lithium bromide refrigerator, air heater had both reclaimed the waste heat of high-temperature cooling water, the cold air temperature is got a promotion, alleviated the load of cooling tower again, strengthen the cooling water outlet and inlet temperature difference of lithium bromide refrigerator, reduced the power consumption of blower fan of cooling tower, can alleviate the power consumption of cooling water circulating pump again.(6) dry air that comes out from air heater enters air preheater, in air preheater, utilize the high-temperature flue gas and the dry air of boiler emission to carry out indirect heat exchange, make dry air become hot-air and enter the boiler air inlet duct, improved the temperature of burner hearth, and make the burning of fuel more abundant, reclaimed the heat in the high-temperature flue gas on the other hand.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments, and accompanying drawing only provides reference and explanation usefulness, non-in order to restriction the present invention.
Fig. 1 is the schematic diagram of the air blast dehumidifying heating steam steam generator system of band oxygen-eliminating device of the present invention.
Among the figure: 1 natural air; 2 air cleaners; 3 surface-coolers and demister; 3a cooler water inlet; 3b cooler delivery port; The automatic rhone of 3c; 4 air blasts; 5 air heaters; 5a dry air inlet; The outlet of 5a ' dry air; 5b heater water inlet; 5b ' heater delivery port; 6 air preheaters; The 6a inlet of cold air; 6a ' hot air outlet; The 6b smoke inlet; 6b ' exhanst gas outlet; 7 boilers; 8 air-introduced machines; 9 chimneys; 10 lithium bromide refrigerators; The import of 10a chilled water; 10a ' chilled water outlet; The 10b cooling water inlet; 10b ' coolant outlet; The 10c steam inlet; The outlet of 10c ' steam condensate (SC); 11 cooling towers; 11a cooling tower upper hose; 11a ' cooling tower outlet pipe; 12 sweet-water tanks; 13 small pumps; 14 oxygen-eliminating devices; 14a exhaust steam outlet; The outlet of 14b deaerated water; 15 feed pumps.
The specific embodiment
As shown in Figure 1, the air blast of band oxygen-eliminating device of the present invention dehumidifying heating steam steam generator system comprises air cleaner 2, surface-cooler and demister 3, air blast 4, air heater 5, air preheater 6, boiler 7, air-introduced machine 8, lithium bromide refrigerator 10, cooling tower 11, sweet-water tank 12, small pump 13, oxygen-eliminating device 14, feed pump 15.
The chilled water outlet 10a ' of lithium bromide refrigerator 10 is connected with the cooler water inlet 3a of surface-cooler and demister 3, and the cooler delivery port 3b of surface-cooler and demister 3 is connected with the chilled water import 10a of lithium bromide refrigerator.
The coolant outlet 10b ' of lithium bromide refrigerator is connected with the heater water inlet 5b of air heater 5, the heater delivery port 5b ' of air heater 5 is connected with the cooling tower upper hose 11a of cooling tower 11, and the cooling tower outlet pipe 11a ' of cooling tower 11 is connected with the cooling water inlet 10b of lithium bromide refrigerator.
In the work, natural air 1 enters surface-cooler and demister 3 after air cleaner 2 filters, surface-cooler and demister 3 are united two into one by surface-cooler, demister and form, cryogenic freezing water enters surface-cooler, carry out indirect heat exchange with the air of the surface-cooler of flowing through, the temperature of air is cooled to below the dew-point temperature, airborne steam condenses into the globule, and flowing into automatic rhone 3c along the surface cooler wall, the remaining water smoke of air quenched generation is then caught by demister and is also entered automatic rhone 3c; Dry air after the dehydration enters the inlet scoop of air blast 4, be sent to air heater 5 by air blast 4, the dry air that comes out from air heater 5 enters air preheater 6, in air preheater 6, utilize the high-temperature flue gas and the dry air of boiler 7 dischargings to carry out indirect heat exchange, make dry air become hot-air and enter the boiler air inlet duct, flue gas is delivered to chimney 9 dischargings by air-introduced machine 8.
The exhaust steam of oxygen-eliminating device 14 discharging inserts the steam inlet 10c of lithium bromide refrigerator 10, becomes steam condensate (SC) after the heat release and exports 10c ' from steam condensate (SC) and discharge and flow back to sweet-water tank 12.The cryogenic freezing water (for example being 7 ℃) that flows out from the chilled water outlet 10a ' of lithium bromide refrigerator 10, enter the cooler water inlet 3a of surface-cooler and demister 3, in surface-cooler and demister 3, become the chilled water (for example being 12 ℃) of high temperature behind the heat of absorption air, flow out and get back to the chilled water import 10a of lithium bromide refrigerator again from cooler delivery port 3b, finish the chilled water circulation.The heat that heat that the steam condensation is discharged and chilled water cooling are discharged is taken away by cooling water, the high-temperature cooling water (for example being 38 ℃) that comes out from the coolant outlet 10b ' of lithium bromide refrigerator inserts the heater water inlet 5b of air heater, flow out and enter cooling tower 11 from heater delivery port 5b ' after the heat release and cool off and become low-temperature cooling water (for example being 32 ℃) by cooling tower upper hose 11a, flow out into the cooling water inlet 10b of lithium bromide refrigerator then from cooling tower outlet pipe 11a ', finish the cooling water circulation.
The above only is the present invention's preferable possible embodiments, and is non-so limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (1)
1. one kind with the air blast of oxygen-eliminating device dehumidifying heating steam steam generator system, comprise that boiler reaches and the supporting air blast of boiler, air-introduced machine, sweet-water tank, small pump, oxygen-eliminating device and feed pump, small pump is sent to the demineralized water in the sweet-water tank water inlet of oxygen-eliminating device, the water outlet of oxygen-eliminating device is delivered to boiler by feed pump, it is characterized in that: also comprise air cleaner, surface-cooler and demister, air heater, air preheater, lithium bromide refrigerator and cooling tower, natural air enters surface-cooler and demister after air cleaner filters, enter air heater through air blast again, the outlet of air heater inserts air preheater, and the outlet of air preheater inserts the air inlet duct of boiler; The exhaust steam outlet of described oxygen-eliminating device is connected with the steam inlet of described lithium bromide refrigerator, and the steam condensate (SC) outlet of described lithium bromide refrigerator inserts described sweet-water tank; The chilled water outlet of described lithium bromide refrigerator is connected with the cooler water inlet of described surface-cooler and demister, and the cooler delivery port of described surface-cooler and demister is connected with the chilled water import of described lithium bromide refrigerator; The coolant outlet of described lithium bromide refrigerator is connected with the heater water inlet of described air heater, the heater delivery port of described air heater is connected with the cooling tower upper hose of described cooling tower, and the cooling tower outlet pipe of described cooling tower is connected with the cooling water inlet of described lithium bromide refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104219565A CN102425802B (en) | 2011-12-16 | 2011-12-16 | Air blowing dehumidifying and heating steam boiler system with deaerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104219565A CN102425802B (en) | 2011-12-16 | 2011-12-16 | Air blowing dehumidifying and heating steam boiler system with deaerator |
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| CN102425802A CN102425802A (en) | 2012-04-25 |
| CN102425802B true CN102425802B (en) | 2013-07-24 |
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| CN2011104219565A Expired - Fee Related CN102425802B (en) | 2011-12-16 | 2011-12-16 | Air blowing dehumidifying and heating steam boiler system with deaerator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108332447A (en) * | 2017-12-31 | 2018-07-27 | 山东鲁泰控股集团有限公司 | A kind of air-conditioning system using power plant's exhaust heat refrigeration |
| CN114132983B (en) * | 2021-11-15 | 2023-10-31 | 山东钢铁集团日照有限公司 | Deoxidizing device capable of providing high-temperature condensed water |
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| JP2806805B2 (en) * | 1994-07-27 | 1998-09-30 | 日立造船株式会社 | Power generation facilities by garbage incineration |
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| JP2010002057A (en) * | 2008-06-18 | 2010-01-07 | Miura Co Ltd | Clean steam generator |
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| CN201306936Y (en) * | 2008-10-16 | 2009-09-09 | 上海青浦工业园区热电有限公司 | Water charging system of condenser in electric power plant |
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| CN201866756U (en) * | 2010-11-01 | 2011-06-15 | 中国铝业股份有限公司 | Exhausted steam recovery device of pressure deaerator |
| CN202371743U (en) * | 2011-12-16 | 2012-08-08 | 亿恒节能科技江苏有限公司 | Blast dehumidifying heating steam boiler device with deaerator |
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