CN102865113B - Steam and ammonia stair power generation system - Google Patents
Steam and ammonia stair power generation system Download PDFInfo
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- CN102865113B CN102865113B CN201210396763.3A CN201210396763A CN102865113B CN 102865113 B CN102865113 B CN 102865113B CN 201210396763 A CN201210396763 A CN 201210396763A CN 102865113 B CN102865113 B CN 102865113B
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- ammoniacal liquor
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Abstract
The invention discloses a steam and ammonia stair power generation system which does not use circulating cooling water to cool steam discharged by a turbonator. The steam and ammonia stair power generation system comprises a steam power generation circulation loop which is mainly formed by a first turbonator, a heat exchanger and a heating device, the first turbonator is driven by the steam to generate power, the heat exchanger receives discharged steam of the first turbonator through a steam condensation flow path, and the heating device heats and vaporizes condensation water output by the steam condensation flow path in the heat exchanger to form the steam for driving the first turbonator. The heat exchanger is further provided with an ammonia water vaporization flow path which is in heat exchange connection with the steam condensation flow path, the output end of the ammonia water vaporization flow path is connected with the ammonia input end of a second turbonator driven by the ammonia to generate power, the input end of the ammonia water vaporization flow path is connected with the ammonia water output end of an ammonia water-cooling recovery device for receiving the ammonia discharged by the second turbonator, and the second turbonator, the ammonia water-cooling recovery device and the ammonia water vaporization flow path are used for forming an ammonia power generation circulation loop.
Description
Technical field
The present invention relates to power generation system, be specifically related to a kind of steam ammonia stair power generation system.
Background technique
As shown in Figure 1, traditional steam generating system is the water in the heat heating boiler utilizing the fuel combustions such as coal, oil, rock gas to produce, thus produces high-pressure steam, and then promotes steam turbine generator generating by water vapour.Afterwards, water vapour enters vapour condenser from the exhaust end of steam turbine generator, with change water of condensation into by the recirculated cooling water generation heat exchange of vapour condenser, water of condensation comes back in boiler and is recycled under the effect of water pump, then enter cooling tower from the recirculated cooling water of vapour condenser outflow and carry out air cooling, come back in vapour condenser again after cooling and recycle.Obviously, this steam generating system fails to utilize the heat in the recirculated cooling water of vapour condenser outflow.
For the problems referred to above, reference CN202055878U discloses a kind of ammonia power generation system that can utilize the heat in above-mentioned recirculated cooling water.As shown in Figure 2, after this ammonia power generation system is positioned at vapour condenser, mainly comprise and driven the second steam turbine generator of generating by ammonia, received the ammonia water-cooled recovering device of the second steam turbine generator institute ammonia excretion gas, and the ammoniacal liquor heating and gasifying exported by ammonia water-cooled recovering device is the parts such as the heat exchanger of the second steam turbine generator driving ammonia.Wherein, described heat exchanger comprises the heat exchange unit be arranged in this outer cover of heat exchanger, this heat exchange unit has a stream, the recirculated cooling water that vapour condenser flows out enters from one end of this stream, the other end flows out, the ammoniacal liquor of heating between this stream and outer cover of heat exchanger, the ammonia that heating ammoniacal liquor produces is discharged from heat exchanger upper air vent, finally enters the second steam turbine generator and generates electricity to drive it.
Obviously, reference still will use the water vapour that recirculated cooling water is discharged to cool steam turbine generator.As shown in Figure 2, for reference, recirculated cooling water just by the thermal energy transfer of the steam turbine generator steam discharge of steam generating system to the intermediate medium of ammonia power generation system.On the other hand, the heat exchanger in reference can not carry out supercharging to the ammonia that it produces, and therefore, also will set up compressor in reference in order to carry out supercharging to ammonia.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of recirculated cooling water that do not use to the steam ammonia stair power generation system of the water vapour cooling steam turbine generator and discharge.
For this reason, the steam ammonia stair power generation system of the application comprises steam electric power circulation loop, this steam electric power circulation loop is mainly driven the first steam turbine generator of generating by water vapor, the heat exchanger of this first steam turbine generator steam discharge is received by steam condensing stream, and by heat exchanger steam condensing stream export water of condensation heat vaporized be the first steam turbine generator driving water vapor heating equipment form, also there is in described heat exchanger the ammoniacal liquor be connected with the heat exchange of steam condensing stream to gasify stream, the output terminal of this ammoniacal liquor gasification stream is connected with being driven the ammonia input end of the second steam turbine generator generated electricity by ammonia, the input end of this ammoniacal liquor gasification stream is connected with the ammoniacal liquor output terminal of the ammonia water-cooled recovering device receiving described second steam turbine generator institute ammonia excretion gas, described second steam turbine generator, ammonia water-cooled recovering device and ammoniacal liquor gasification stream are for forming ammonia power generation cycle loop.
Compared with reference, the application does not re-use recirculated cooling water to cool the water vapour that the first steam turbine generator is discharged, but directly adopts ammoniacal liquor to cool the water vapour of the first steam turbine generator discharge.While the water vapour that ammoniacal liquor is discharged at cooling first steam turbine generator, due to self chemical property extremely unstable, be decomposed into ammonia and water soon, ammonia absorbs heat in a large number further and volatilizees for ammonia, thus drives the second steam turbine generator generating.Visible, although this steam ammonia stair power generation system of the application eliminates the medium tache of cooling water circulation heat exchange, not having the simplification because of structure for this reason to cause the decline of systemic-function, is improve heat utilization efficiency simplied system structure while on the contrary.
As the improvement to wherein heat exchanger structure, described heat exchanger comprises the first heat exchange unit and the second heat exchange unit, described first heat exchange unit comprises the ammonia heating pressurized chamber with suction port and relief opening and for the first flow path that heats of this ammonia heating pressurized chamber, and described second heat exchange unit comprises the ammoniacal liquor heating and gasifying chamber with liquid entering hole, liquid port and relief opening and the second stream for heating this ammoniacal liquor heating and gasifying chamber; The entrance of described first flow path is connected with the moisture discharge end of the first steam turbine generator, and the outlet of described second stream is connected with the water of condensation input end of heating equipment, and the outlet of first flow path is communicated with the entrance of the second stream; The described ammonia heating suction port of pressurized chamber and the relief opening conducting of ammoniacal liquor heating and gasifying chamber, the ammonia heating relief opening of pressurized chamber is connected with the ammonia input end of the second steam turbine generator, and the liquid entering hole of ammoniacal liquor heating and gasifying chamber is connected with the ammoniacal liquor output terminal of ammonia water-cooled recovering device.
Above-mentioned heat exchanger is work like this: the first flow path first entering the first heat exchange unit from the water vapour that the temperature of the first steam turbine generator discharge is higher, and then enter the second stream of the second heat exchange unit from the outlet of first flow path, finally from the outlet outflow heat exchanger of the second stream, when it enters the second stream, owing to carrying out a heat exchange (namely with enter the ammonia that ammonia heats in pressurized chamber carry out heat exchange) in the first heat exchange unit, its temperature significantly declines, now, because the boiling point of ammonia is very low, the ammoniacal liquor entered ammoniacal liquor heating and gasifying chamber from liquid entering hole still can be converted into ammonia in a large number, after this, the ammonia produced in ammoniacal liquor heating and gasifying chamber enters ammonia heating pressurized chamber, at this moment, the water vapour generation heat exchange that these ammonias are higher with temperature in the first flow path just entering the first heat exchange unit again, ammonia is heated and supercharging further, to improve the generating efficiency of follow-up second steam turbine generator, and discharge from the liquid port of ammoniacal liquor heating and gasifying chamber again through the remaining liq of heat exchange in ammoniacal liquor heating and gasifying chamber.As can be seen here, based on the improvement of heat exchanger structure, the heat exchanger in the steam ammonia stair power generation system of the application directly can carry out supercharging to ammonia, realizes the efficiency utilization to heat.
As the further improvement to technique scheme, during this system cloud gray model, inlet temperature >=70 of described second stream DEG C and < 100 DEG C.When the inlet temperature of the second stream is controlled in above-mentioned interval range, the ammoniacal liquor being arranged in ammoniacal liquor heating and gasifying chamber does not substantially produce water vapour while decomposition produces ammonia, what this makes it possible to guarantee to enter the second steam turbine generator is almost ammonia entirely, thus avoids when what enter the second steam turbine generator being the problem that the mixed gas of ammonia and water vapour produces.
As the further improvement to technique scheme, described first heat exchange unit and the second heat exchange unit are stacked is up and down an entirety, ammonia heating pressurized chamber and ammoniacal liquor heating and gasifying chamber up/down perforation.Design of heat exchanger being become the first heat exchange unit and the second heat exchange unit stacked is up and down an entirety, and after making ammonia heat the form of pressurized chamber and ammoniacal liquor heating and gasifying chamber up/down perforation, integrity and the compactedness of equipment can not only be improved, the more important thing is and can also shorten the flow distance of heat transferring medium between the first heat exchange unit and the second heat exchange unit, reduce heat loss, and the flow resistance of ammonia between the first heat exchange unit and the second heat exchange unit can be reduced.
Below in conjunction with the drawings and specific embodiments, the present invention is described further.The aspect that the application adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by the practice of the application.
Accompanying drawing explanation
Fig. 1 is the principle schematic of traditional thermal power generation system.
Fig. 2 is the principle schematic of reference institute operation technique scheme.
Fig. 3 is the structural representation of the application's steam ammonia stair power generation system embodiment 1.
Fig. 4 is the structural representation of the application's steam ammonia stair power generation system embodiment 2.
Embodiment
As shown in Figure 3,4, in fact the steam ammonia stair power generation system of the application comprises steam generating system and ammonia power generation system two parts, and wherein, steam generating system has steam electric power circulation loop, and ammonia power generation system has ammonia power generation cycle loop.This steam electric power circulation loop is mainly driven the first steam turbine generator 4 of generating by water vapor, is received the heat exchanger 3 of this first steam turbine generator 4 steam discharge by steam condensing stream, and the water of condensation that steam condensing stream in heat exchanger 3 is exported heat vaporized be that the heating equipment 6 of the first steam turbine generator 4 driving water vapor is formed.Heating equipment 6 generally can adopt the heating boiler of the fuel such as coal combustion, oil, rock gas.There is in described heat exchanger 3 ammoniacal liquor be connected with the heat exchange of steam condensing stream to gasify stream, the output terminal of this ammoniacal liquor gasification stream is connected with being driven the ammonia input end of the second steam turbine generator 1 generated electricity by ammonia, the input end of this ammoniacal liquor gasification stream is connected with the ammoniacal liquor output terminal of the ammonia water-cooled recovering device 2 receiving described second steam turbine generator 1 ammonia excretion gas, and described second steam turbine generator 1, ammonia water-cooled recovering device 2 and ammoniacal liquor gasification stream is for forming ammonia power generation cycle loop.
As shown in Figure 3,4, heat exchanger 3 comprises the first heat exchange unit 310 and the second heat exchange unit 320, first heat exchange unit 310 and comprises and have suction port, the ammonia heating pressurized chamber 312 of relief opening and the first flow path 311 for heating this ammonia heating pressurized chamber 312; Second heat exchange unit 320 comprises the ammoniacal liquor heating and gasifying chamber 322 with liquid entering hole, liquid port and relief opening and the second stream 321 for heating this ammoniacal liquor heating and gasifying chamber 322; First heat exchange unit 310 and the second heat exchange unit about 320 stacked be one overall, ammonia heating pressurized chamber 312 and ammoniacal liquor heating and gasifying chamber 322 up/down perforation.As shown in Figure 3,4, the entrance of first flow path 311 is connected with the moisture discharge end of the first steam turbine generator 4, and the outlet of the second stream 321 is connected with the water of condensation input end of heating equipment 6, and the outlet of first flow path 311 is communicated with the entrance of the second stream 321.As shown in Figure 3,4, the ammonia heating suction port of pressurized chamber 312 and the relief opening conducting of ammoniacal liquor heating and gasifying chamber 322; The relief opening of ammonia heating pressurized chamber 312 is connected with the ammonia input end of the second steam turbine generator 1, the liquid entering hole of ammoniacal liquor heating and gasifying chamber 322 is connected with the ammoniacal liquor output terminal of ammonia water-cooled recovering device 2, and the liquid port of ammoniacal liquor heating and gasifying chamber 322 is connected through the input port of piping with the jet pump 210 in ammonia water-cooled recovering device 2.
As shown in Figure 3,4, ammonia water-cooled recovering device 2 comprises tank used for storing ammonia 220 and the jet pump 210 be arranged on above this tank used for storing ammonia 220; Wherein, tank used for storing ammonia 220 is communicated with by the liquid entering hole of pipeline with ammoniacal liquor heating and gasifying chamber 322, and this pipeline is provided with pump 7; The jetting fluid input interface of jet pump 210 is communicated with by the liquid port of pipeline with ammoniacal liquor heating and gasifying chamber 322, and this pipeline is provided with pump 8; The outlet pipe of the second steam turbine generator 1 is connected with the ammonia input interface of jet pump 210 by pipeline.
The working procedure of this steam ammonia stair power generation system for: first the water vapour discharged from the first steam turbine generator 4 enter the first flow path 311 of the first heat exchange unit 310, and then the second stream 321 of the second heat exchange unit 320 is entered from the outlet of first flow path 311, finally from the outlet outflow heat exchanger 3 of the second stream 321, heating equipment 6 is returned by the effect of pump 5 from the water of condensation of the second stream 321 outflow heat exchanger 3, after heating equipment 6 reheats, produce water vapour again and again promote the first steam turbine generator 4 and generate electricity, realize recycling of water vapour.The water vapour discharged when the first steam turbine generator 4 enters (now water vapour changes water of condensation into) after the second stream 321, because it had carried out a heat exchange (namely with enter the ammonia that ammonia heats in pressurized chamber 312 carry out heat exchange) in the first heat exchange unit 310, its temperature significantly declines, now, because the boiling point of ammonia is lower, the ammoniacal liquor entered ammoniacal liquor heating and gasifying chamber 322 from liquid entering hole still can be converted into ammonia in a large number.After this, the ammonia produced in ammoniacal liquor heating and gasifying chamber 322 enters ammonia heating pressurized chamber 312, at this moment, the water vapour generation heat exchange that these ammonias are higher with temperature in the first flow path 311 entering the first heat exchange unit 310 again, ammonia is heated and supercharging further, and then directly generates electricity to drive it to the second steam turbine generator 1 from the relief opening of ammonia heating pressurized chamber 312.Discharge through the liquid port of the remaining liq (weak aqua ammonia) of heat exchange from ammoniacal liquor heating and gasifying chamber 322 in ammoniacal liquor heating and gasifying chamber 322, by the effect of pump 8 to jet pump 210, jet pump 210 uses weak aqua ammonia to carry out spraying cooling to come from the ammonia that the second steam turbine generator 1 discharges, thus ammonia water-cooled is recycled in tank used for storing ammonia 220, and then by the effect of pump 7, the concentrated ammonia liquor in tank used for storing ammonia 220 is squeezed in ammoniacal liquor heating and gasifying chamber 322.For making substantially not produce water vapour in ammoniacal liquor heating and gasifying chamber 322, inlet temperature >=70 DEG C of described second stream 321 should be controlled and < 100 DEG C.
Embodiment 1
As shown in Figure 3, the concrete structure of the first heat exchange unit 310 is: ammonia heating pressurized chamber 312 to be vertically arranged in the first heat exchange unit 310 by many and the tube chamber of spaced apart heat exchanging tube 312a is formed in the horizontal direction, the two ends of these heat exchanging tubes 312a are arranged on orifice plate 302 respectively, the lower end of heat exchanging tube 312a is the suction port of ammonia heating pressurized chamber 312, upper end is the relief opening of ammonia heating pressurized chamber 312, and the outside of heat exchanging tube 312a described in the first heat exchange unit 310 forms first flow path 311.The concrete structure of the second heat exchange unit is: the second stream 321 is made up of the heat exchanging tube extended in the second heat exchange unit 320, and the outside of heat exchanging tube described in the second heat exchange unit 320 forms ammoniacal liquor heating and gasifying chamber 322.The heat exchanging tube 312a adopted in first heat exchange unit 310 can to wherein being played good compression by the ammonia heated.
Embodiment 2
As shown in Figure 4, the concrete structure of the first heat exchange unit 310 is: first flow path 311 is made up of the heat exchanging tube extended tortuous in the first heat exchange unit 310, and the outside of heat exchanging tube described in the first heat exchange unit 310 forms ammonia heating pressurized chamber 312.The concrete structure of the second heat exchange unit 320 is identical with embodiment 1.
Claims (6)
1. steam ammonia stair power generation system, comprise steam electric power circulation loop, this steam electric power circulation loop is mainly driven first steam turbine generator (4) of generating by water vapor, the heat exchanger (3) of this first steam turbine generator (4) steam discharge is received by steam condensing stream, and the water of condensation that steam condensing stream in heat exchanger (3) exported heat vaporized be heating equipment (6) formation of the first steam turbine generator (4) drivings water vapor, it is characterized in that: also there is in described heat exchanger (3) ammoniacal liquor be connected with the heat exchange of steam condensing stream and to gasify stream, the output terminal of this ammoniacal liquor gasification stream is connected with being driven the ammonia input end of the second steam turbine generator (1) generated electricity by ammonia, the input end of this ammoniacal liquor gasification stream is connected with the ammoniacal liquor output terminal of the ammonia water-cooled recovering device (2) receiving described second steam turbine generator (1) institute ammonia excretion gas, described second steam turbine generator (1), ammonia water-cooled recovering device (2) and ammoniacal liquor gasification stream are for forming ammonia power generation cycle loop, described heat exchanger (3) comprises the first heat exchange unit (310) and the second heat exchange unit (320), described first heat exchange unit (310) comprises the ammonia with suction port and relief opening and heats pressurized chamber (312) and the first flow path (311) for heating this ammonia heating pressurized chamber (312), described second heat exchange unit (320) comprises and has liquid entering hole, the ammoniacal liquor heating and gasifying chamber (322) of liquid port and relief opening and the second stream (321) for heating this ammoniacal liquor heating and gasifying chamber (322), the entrance of described first flow path (311) is connected with the moisture discharge end of the first steam turbine generator (4), the outlet of described second stream (321) is connected with the water of condensation input end of heating equipment (6), and the outlet of first flow path (311) is communicated with the entrance of the second stream (321), the described suction port of ammonia heating pressurized chamber (312) and the relief opening conducting of ammoniacal liquor heating and gasifying chamber (322), the relief opening of ammonia heating pressurized chamber (312) is connected with the ammonia input end of the second steam turbine generator (1), and the liquid entering hole of ammoniacal liquor heating and gasifying chamber (322) is connected with the ammoniacal liquor output terminal of ammonia water-cooled recovering device (2), discharge through the liquid port of the remaining liq of heat exchange from ammoniacal liquor heating and gasifying chamber in ammoniacal liquor heating and gasifying chamber (322).
2. steam ammonia stair power generation system as claimed in claim 1, is characterized in that: during this system cloud gray model, inlet temperature >=70 of described second stream (321) DEG C and < 100 DEG C.
3. steam ammonia stair power generation system as claimed in claim 1, it is characterized in that: described ammonia heating pressurized chamber (312) to be vertically arranged in the first heat exchange unit (310) by many and the tube chamber of spaced apart heat exchanging tube (312a) is formed in the horizontal direction, the two ends of these heat exchanging tubes (312a) are arranged on orifice plate (302) respectively, the lower end of heat exchanging tube (312a) is the suction port of ammonia heating pressurized chamber (312), upper end is the relief opening of ammonia heating pressurized chamber (312), the outside of heat exchanging tube (312a) described in the first heat exchange unit (310) forms first flow path (311).
4. steam ammonia stair power generation system as claimed in claim 1, it is characterized in that: described second stream (321) is made up of the heat exchanging tube extended in the second heat exchange unit (320), and the outside of heat exchanging tube described in the second heat exchange unit (320) forms ammoniacal liquor heating and gasifying chamber (322).
5. as the steam ammonia stair power generation system in Claims 1-4 as described in any one claim, it is characterized in that: described first heat exchange unit (310) and the second heat exchange unit (320) are stacked is up and down an entirety, ammonia heating pressurized chamber (312) and ammoniacal liquor heating and gasifying chamber (322) up/down perforation.
6. as the steam ammonia stair power generation system in Claims 1-4 as described in any one claim, it is characterized in that: described heating equipment (6) is heating boiler.
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CN201210396763.3A CN102865113B (en) | 2012-10-18 | 2012-10-18 | Steam and ammonia stair power generation system |
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CN201210396763.3A CN102865113B (en) | 2012-10-18 | 2012-10-18 | Steam and ammonia stair power generation system |
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CN102865113A CN102865113A (en) | 2013-01-09 |
CN102865113B true CN102865113B (en) | 2015-01-14 |
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CN103133069B (en) * | 2013-01-27 | 2015-06-10 | 南京瑞柯徕姆环保科技有限公司 | Vapor Rankine-ammonia vapor Rankine combined cycle power generation device |
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JP4089187B2 (en) * | 2001-08-31 | 2008-05-28 | 株式会社日立製作所 | Thermoelectric supply system |
CN1807848B (en) * | 2005-01-20 | 2012-08-29 | 陈祖茂 | Double-fluid steam type double power generation arrangement |
MX2012000059A (en) * | 2009-06-22 | 2012-06-01 | Echogen Power Systems Inc | System and method for managing thermal issues in one or more industrial processes. |
CN202055878U (en) * | 2010-12-31 | 2011-11-30 | 杨学军 | Industrial exhaust heat power generation system |
CN102230400A (en) * | 2011-05-24 | 2011-11-02 | 唐应吉 | Device for generating electricity by using dead steam discharged by steam turbine |
CN202832681U (en) * | 2012-10-18 | 2013-03-27 | 四川京典能源科技有限公司 | Steam ammonia cascade power generation system |
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Effective date of registration: 20210122 Address after: 226600 group 9, Minqiao village, Chengdong Town, Hai'an County, Nantong City, Jiangsu Province Patentee after: NANTONG ZHIHANG ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 610041 3, No. 165, Tianlong North Lane, hi tech Zone, Chengdu, Sichuan. Patentee before: SICHUAN JINGDIAN ENERGY TECHNOLOGY Co.,Ltd. |