CN102434235A - Kalina cycle generation system adopting ejector - Google Patents

Kalina cycle generation system adopting ejector Download PDF

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Publication number
CN102434235A
CN102434235A CN2011103364133A CN201110336413A CN102434235A CN 102434235 A CN102434235 A CN 102434235A CN 2011103364133 A CN2011103364133 A CN 2011103364133A CN 201110336413 A CN201110336413 A CN 201110336413A CN 102434235 A CN102434235 A CN 102434235A
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CN
China
Prior art keywords
outlet
ejector
working medium
sparger
preheater
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Pending
Application number
CN2011103364133A
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Chinese (zh)
Inventor
李新国
赵翠翠
胡晓辰
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Tianjin University
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Tianjin University
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Priority to CN2011103364133A priority Critical patent/CN102434235A/en
Publication of CN102434235A publication Critical patent/CN102434235A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a Kalina cycle generation system adopting an ejector. A structure of the Kalina cycle generation system is that an ejector fluid inlet is connected with a preheater working medium lateral outlet, an ejected fluid inlet of the ejector is connected with an outlet of an expansion machine, and a fluid outlet of the ejector is connected with a condenser working medium lateral inlet. The condenser working medium lateral outlet is connected with a working medium pump, a preheater, an evaporator and a gas-liquid separator in sequence. One outlet of the gas-liquid separator is connected with the expansion machine, and the other outlet of the gas-liquid separator is connected with the preheater, thereby forming a closed cycle return circuit. A mixing chamber in the ejector serves as an ammonia water absorbing and mixing chamber. Based on the existing Kalina cycle generation system, the ejector is adopted to replace a throttle valve, and the ejector guides the outlet of the expansion machine to exhaust gas in ejecting mode, thereby avoiding throttling loss, reducing exhaust pressure of the expansion machine, increasing working differential pressure of the expansion machine and improving acting ability and efficiency of the expansion machine.

Description

Adopt the Ka Linna cycle generating system of sparger
Technical field
The invention belongs to hot generation technology, be specifically related to a kind of Ka Linna (Kalina) cycle generating system that adopts sparger to middle low-temperature heat source.
Background technique
In low-temperature heat source be meant that generally temperature is lower than 200 ℃ low-grade energy, these heat energy are of a great variety, comprise new energy such as solar energy, geothermal power and various surplus (giving up) heat etc.The quantity of middle-low temperature heat is extremely huge; The a large amount of middle-low temperature heats that in industry production processes such as iron and steel, cement, petrochemical industry, produce; Comprise hot water, low-grade flue gas and steam etc., these amount of heat are big, grade is low, can not be utilized by production process basically again.Reclaim and utilize this part energy, both can reduce the consumption of the energy, can reduce pollution again, reach the effect of energy-saving and emission-reduction environment.
In middle low temperature heat resource power generation system, Ka Linna (Kalina) circulating generation generally is to adopt ammonia spirit to generate electricity as cycle fluid.Utilize the matched well characteristic of ammonia water mixture and thermal source, its heat transfer temperature difference reduces, and irreversible loss reduces, and can reclaim the thermal source heat to greatest extent.But in the Kalina of routine circulation; The ammonia spirit of high and low two strands of variable concentrations will equipressure mix in adsorber; Thus; Make the high pressure dilute ammonia solution after the preheater heat exchange, need to be depressurized to the pressure of decompressor exhaust, just can mix with the concentrated ammonia liquor steam of decompressor outlet through throttling.Throttling has caused the loss of dilute ammonia solution high pressure potential energy, has caused waste and efficient to reduce.Clearly if can reduce the loss of dilute ammonia solution high pressure potential energy, the generating efficiency of system just can be improved.
Summary of the invention
The object of the present invention is to provide a kind of Ka Linna (Kalina) cycle generating system that adopts sparger, reduce the restriction loss in the former Kalina cycle generating system, improve the efficient and the generating capacity of Kalina circulating generation.
For realizing above-mentioned purpose; The present invention has adopted following scheme: adopt the Ka Linna cycle generating system of sparger to comprise: vaporizer, gas-liquid separator; Decompressor, preheater, sparger, condenser, working medium pump and cycle fluid, parts interconnection technique scheme is: the sparger fluid inlet is connected to the outlet of preheater working medium side; The driven fluid import of sparger is connected to the outlet of decompressor; The fluid output of sparger is connected to the import of condenser working medium side, constitutes the closed loop thus.The outlet of condenser working medium side is connected to working medium pump, preheater, vaporizer and gas-liquid separator successively, and outlet of gas-liquid separator is connected to decompressor; Another outlet is connected to preheater.Here the mixing chamber in the sparger is as the absorption mixing chamber of ammoniacal liquor.
The beneficial effect of characteristics of the present invention and generation is:
(1) adopts the outlet exhaust of sparger injection decompressor, reduced the exhaust pressure of decompressor, increase the operating pressure differential of decompressor, improve the acting ability and the mechanical efficiency of decompressor.
(2) adopt sparger to substitute throttle valve and avoided restriction loss, improve system effectiveness.
(3) former mixing chamber changes and is made as the absorption mixing chamber in the sparger, has to absorb to mix double action, has substituted the adsorber in the former Kalina circulatory system.
Description of drawings
Shown in accompanying drawing be the working principle and the system diagram of electricity generating device of the present invention.
Embodiment
Below in conjunction with accompanying drawing and through embodiment structure of the present invention is further described.Need to prove that present embodiment is narrative, rather than determinate.Do not limit protection scope of the present invention with this embodiment.
Adopt the Ka Linna cycle generating system (as shown in the figure) of sparger, its parts connect to form and are: sparger 4 fluid inlets are connected to the outlet of preheater 8 working medium side; The driven fluid import of sparger 4 is connected to the outlet of decompressor 3; The fluid output of sparger 4 is connected to condenser 6 working medium side imports.The outlet of condenser working medium side is connected to working medium pump 7, preheater 8, vaporizer 1 and gas-liquid separator 2 successively, and outlet of gas-liquid separator is connected to decompressor; Another outlet is connected to preheater, constitutes the closed loop thus.Mixing chamber 5 in the sparger 4 is as the absorption mixing chamber of ammoniacal liquor.
The HTHP ammonia spirit of evaporator outlet is separated into dense ammonia steam and liquor ammoniae dilutus in gas-liquid separator, high-pressure thick ammonia steam gets into the decompressor acting.After the high pressure liquor ammoniae dilutus gets into the preheater heat release, get into sparger as working fluid, sparger also is ejector, the exhaust of injection decompressor.The ammonia spirit of two strands of variable concentrations absorbs mixing chamber and absorbs mixing in sparger, become the basic solution of low-temp low-pressure, and the outlet entering condenser by sparger carries out the condensation heat release.The saturated solution of condensator outlet gets into vaporizer after the working medium pump pressurization, accomplish systemic circulation.
The cycle fluid of present embodiment adopts ammonia spirit (NH 3H 2O).If the evaporating pressure 1.5MPa of first evaporator, condensing pressure 1.05MPa.With following parameter is running parameter, and circulation process is described.
(1) the ammonia concentration of condensator outlet 1.05MPa is that the saturated liquid refrigerant of ammoniacal liquor of 0.7kg/kg is pressurized to 1.5MPa by working medium pump, after the preheater preheating, delivers in the vaporizer and absorbs heat, and after the thermal source heating, becomes 99.411 ℃ steam, gets into gas-liquid separator.
(2) above-mentioned ammoniacal liquor NH 3H 2O solution separates in gas-liquid separator, and wherein the working medium of 54.2% (mass percent) is separated into the saturated NH that ammonia concentration is the 1.5MPa of 0.96kg/kg 3H 2O steam through vapor phase exit, gets into the driven fluid import that decompressor acting back gets into sparger.The decompressor exhaust pressure is 0.85MPa, and temperature is 74.943 ℃.
(3) working medium of all the other 45.8% (mass percents) is separated into the saturated liquid refrigerant of ammoniacal liquor that ammonia concentration is the 1.5MPa of 0.39229kg/kg in the gas-liquid separator; Export through liquid phase; Become the overcooled liquid of 1.5MPa after the heat release of entering preheater; 15.44 ℃ of Subcoold temperature get into the working fluid of sparger as sparger.
(4) in sparger; Absorb in the absorption mixing chamber of the same working fluid of driven fluid (total amount 54.2%) (total amount 45.8%) in sparger and mix, discharge behind the diffusion; Sparger outlet fluid ammonia concentration 0.7kg/kg, 82.493 ℃ of temperature, pressure 1.05MPa.
(5) NH of sparger outlet 3H 2O solution, the entering condenser condenses is a saturated liquids, working pressure 1.05MPa, 40.82 ℃ of operating temperatures.The saturated solution of condensator outlet is sent into preheater through working medium pump.So accomplish a circulation.
Below be the contrast of two kinds of power generation systems:
Adopt the Ka Linna cycle generating system (E-Kalina) of sparger: loop parameter is according to above-mentioned setup parameter.
The conventional Kalina circulatory system: the decompressor delivery temperature is 83.915 ℃, exhaust pressure 1.05MPa.
E-Kalina circulation and Kalina circulating generation performance comparison
Calculated by top: the E-Kalina circulatory system of the present invention improves 57.25% than the generating capacity of the conventional Kalina circulatory system, and generating efficiency improves 58.45%.

Claims (2)

1. adopt the Ka Linna cycle generating system of sparger, comprise vaporizer, gas-liquid separator, decompressor, preheater, sparger, condenser, working medium pump and cycle fluid is characterized in that: sparger (4) fluid inlet is connected to the outlet of preheater (8) working medium side; The driven fluid import of sparger (4) is connected to the outlet of decompressor (3); The fluid output of sparger (4) is connected to condenser (6) working medium side import, and the outlet of condenser working medium side is connected to working medium pump (7), preheater (8), vaporizer (1) and gas-liquid separator (2) successively, and outlet of gas-liquid separator is connected to decompressor; Another outlet is connected to preheater, constitutes the closed loop thus.
2. according to the Ka Linna cycle generating system of the described employing sparger of claim 1, it is characterized in that the absorption mixing chamber of the interior mixing chamber (5) of described sparger (4) as ammoniacal liquor.
CN2011103364133A 2011-10-28 2011-10-28 Kalina cycle generation system adopting ejector Pending CN102434235A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733871A (en) * 2012-07-16 2012-10-17 郑州大学 Low-temperature waste heat power generation system
CN102797525A (en) * 2012-08-31 2012-11-28 天津大学 Low-temperature Rankine circulation system employing non-azeotropic mixed working medium variable components
JP2013174145A (en) * 2012-02-23 2013-09-05 Miura Co Ltd Binary power generation system
CN103629860A (en) * 2013-12-04 2014-03-12 重庆大学 Transcritical CO2 cooling heat and power combined circulation system
JP2014134309A (en) * 2013-01-08 2014-07-24 Hino Motors Ltd Rankine cycle engine
CN104196583A (en) * 2014-08-22 2014-12-10 苟仲武 Novel steam power cycle device and working method based on vortex principle
CN106705484A (en) * 2016-12-23 2017-05-24 张承虎 Jetting type heat exchange system
CN109944651A (en) * 2019-02-22 2019-06-28 昆明理工大学 A kind of middle-low temperature heat driving flash distillation-absorption combined-circulation power and refrigeration cogeneration system
CN110185511A (en) * 2019-04-25 2019-08-30 昆明理工大学 A kind of middle-low temperature heat driving flash distillation-injection-absorption combined-circulation cooling heating and power generation system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11101105A (en) * 1997-09-29 1999-04-13 Hisaka Works Ltd Binary power generation system
CN101666250A (en) * 2009-09-25 2010-03-10 天津大学 System for improving low-temperature heat source power generation capacity by using injection pump
CN201991580U (en) * 2011-03-15 2011-09-28 中国电力工程顾问集团西南电力设计院 Flue gas waste heat power generating system comprising ammonia steam turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11101105A (en) * 1997-09-29 1999-04-13 Hisaka Works Ltd Binary power generation system
CN101666250A (en) * 2009-09-25 2010-03-10 天津大学 System for improving low-temperature heat source power generation capacity by using injection pump
CN201991580U (en) * 2011-03-15 2011-09-28 中国电力工程顾问集团西南电力设计院 Flue gas waste heat power generating system comprising ammonia steam turbine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013174145A (en) * 2012-02-23 2013-09-05 Miura Co Ltd Binary power generation system
CN102733871A (en) * 2012-07-16 2012-10-17 郑州大学 Low-temperature waste heat power generation system
CN102797525A (en) * 2012-08-31 2012-11-28 天津大学 Low-temperature Rankine circulation system employing non-azeotropic mixed working medium variable components
JP2014134309A (en) * 2013-01-08 2014-07-24 Hino Motors Ltd Rankine cycle engine
CN103629860A (en) * 2013-12-04 2014-03-12 重庆大学 Transcritical CO2 cooling heat and power combined circulation system
CN104196583A (en) * 2014-08-22 2014-12-10 苟仲武 Novel steam power cycle device and working method based on vortex principle
CN104196583B (en) * 2014-08-22 2016-04-06 苟仲武 A kind of steam power circulating apparatus and method of work utilizing vortex principle
CN106705484A (en) * 2016-12-23 2017-05-24 张承虎 Jetting type heat exchange system
CN106705484B (en) * 2016-12-23 2019-04-16 张承虎 A kind of jetting type heat exchange system
CN109944651A (en) * 2019-02-22 2019-06-28 昆明理工大学 A kind of middle-low temperature heat driving flash distillation-absorption combined-circulation power and refrigeration cogeneration system
CN110185511A (en) * 2019-04-25 2019-08-30 昆明理工大学 A kind of middle-low temperature heat driving flash distillation-injection-absorption combined-circulation cooling heating and power generation system

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