CN102494349B - Blowing, dehumidifying and heating steam boiler system - Google Patents

Blowing, dehumidifying and heating steam boiler system Download PDF

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Publication number
CN102494349B
CN102494349B CN2011104219584A CN201110421958A CN102494349B CN 102494349 B CN102494349 B CN 102494349B CN 2011104219584 A CN2011104219584 A CN 2011104219584A CN 201110421958 A CN201110421958 A CN 201110421958A CN 102494349 B CN102494349 B CN 102494349B
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China
Prior art keywords
air
lithium bromide
cooler
steam
heater
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Expired - Fee Related
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CN2011104219584A
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Chinese (zh)
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CN102494349A (en
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杨晓辉
张基虎
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YIHENG ENERGY-SAVING TECHNOLOGY JIANGSU CO LTD
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YIHENG ENERGY-SAVING TECHNOLOGY JIANGSU CO LTD
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Publication of CN102494349A publication Critical patent/CN102494349A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect 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 a blowing, dehumidifying and heating steam boiler system; after passing through an air filter, natural air enters a surface cooler and a demister, then is fed into an air heater and an air pre-heater in turn through an air blower, and finally enters a boiler; low-pressure steam is connected to a steam inlet of a lithium bromide refrigerating machine; a steam condensate outlet of the lithium bromide refrigerating machine is connected to a steam condensate recovering system; a chilled water outlet of the lithium bromide refrigerating machine is connected with the surface cooler and a cooler water inlet of the demister; the surface cooler and a cooler water outlet of the demister are connected with a chilled water inlet of the lithium bromide refrigerating machine; acooled water outlet of the lithium bromide refrigerating machine is connected with a water inlet of the air heater; a water outlet of the air heater is connected with an upper water pipe of a coolingtower; and a lower water pipe of the cooling tower is connected with a cooled water inlet of the lithium bromide refrigerating machine. The system disclosed by the invention is capable of reducing the electricity consumption of the air blower, reducing heat loss of emission smoke, utilizing low-pressure steam and increasing the heat efficiency.

Description

Air blast dehumidifying heating steam steam generator system
Technical field
The present invention relates to a kind of therrmodynamic system, particularly a kind of air blast dehumidifying heating steam steam generator system.
Background technology
Natural air is made up of dry air and steam, namely 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, blown in boiler 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 formed 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 is provided, can improve the efficiency of oxygen supply of air blast, reduce power consumption, reduce heat loss due to exhaust gas, low-pressure steam to surplus utilizes simultaneously, improves the thermal efficiency of whole system.
For solving above technical problem, a kind of air blast dehumidifying heating steam steam generator system provided by the present invention, comprise that boiler reaches air blast and the air-introduced machine supporting with boiler, 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; Low-pressure steam inserts the steam inlet of described lithium bromide refrigerator, and the steam condensate (SC) outlet of described lithium bromide refrigerator inserts the reclamation of condensate water system; 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 low-pressure steam of the surplus of generation such as high-low pressure vapour amount imbalance, summer in winter vapour amount imbalance to drive lithium bromide refrigerator and produces chilled water, effectively utilized the waste heat of low-pressure steam, the steam condensate (SC) that comes out from lithium bromide refrigerator inserts condensation water recovery system, both reclaim demineralized water itself, utilized the waste heat 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 enters 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 significantly descends.(5) in the lithium bromide refrigerator, the caloric requirement that the heat that the steam condensation discharges and chilled water cooling discharge 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 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, and is non-in order to limit the present invention.
Fig. 1 is the schematic diagram of air blast dehumidifying heating steam steam generator system 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 entrance; 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 reclamation of condensate water systems.
The specific embodiment
As shown in Figure 1, air blast dehumidifying heating steam steam generator system of the present invention 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 and reclamation of condensate water system 12.
Natural air 1 enters the entrance of surface-cooler and demister 3 after air cleaner 2 filters, the outlet of surface-cooler and demister 3 inserts the inlet scoop of air blast 4, the air outlet of air blast 4 inserts the dry air entrance 5a of air heater 5, the dry air outlet 5a ' of air heater inserts the inlet of cold air 6a of air preheater 6, and the hot air outlet 6a ' of air preheater 6 inserts the air inlet duct of boiler 7.
Superfluous low-pressure steam inserts the steam inlet 10c of lithium bromide refrigerator 10, and the steam condensate (SC) outlet 10c ' of lithium bromide refrigerator inserts reclamation of condensate water system 12.
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 also enters 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 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.
Superfluous low-pressure steam 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 the reclamation of condensate water system 12 that enters.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 the heat that the steam condensation discharges and chilled water cooling discharge 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 by cooling tower upper hose 11a from heater delivery port 5b ' after the heat release and cool off and become low-temperature cooling water (for example being 32 ℃), 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. air blast dehumidifying heating steam steam generator system, comprise that boiler reaches air blast and the air-introduced machine supporting with boiler, 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; Low-pressure steam inserts the steam inlet of described lithium bromide refrigerator, and the steam condensate (SC) outlet of described lithium bromide refrigerator inserts the reclamation of condensate water system; 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.
CN2011104219584A 2011-12-16 2011-12-16 Blowing, dehumidifying and heating steam boiler system Expired - Fee Related CN102494349B (en)

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CN2011104219584A CN102494349B (en) 2011-12-16 2011-12-16 Blowing, dehumidifying and heating steam boiler system

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Application Number Priority Date Filing Date Title
CN2011104219584A CN102494349B (en) 2011-12-16 2011-12-16 Blowing, dehumidifying and heating steam boiler system

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CN102494349B true CN102494349B (en) 2013-09-04

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03237256A (en) * 1990-02-14 1991-10-23 Nkk Corp Highly efficient exhaust heat recovery system for cogeneration system
CN2280252Y (en) * 1996-12-14 1998-04-29 衡阳市经发制冷空调实业有限公司 Lithium bromide refrigerator
CN101709881A (en) * 2009-12-09 2010-05-19 中国铝业股份有限公司 Oxygen-enriched combustion-supporting method of pulverized coal fired boilers
CN101879379B (en) * 2010-07-12 2012-05-23 西安交通大学 Gas exhausting and water containing system and method for lithium bromide recycling desulfurization system
CN202371744U (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

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