CN202832681U - Steam ammonia cascade power generation system - Google Patents
Steam ammonia cascade power generation system Download PDFInfo
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- CN202832681U CN202832681U CN 201220533278 CN201220533278U CN202832681U CN 202832681 U CN202832681 U CN 202832681U CN 201220533278 CN201220533278 CN 201220533278 CN 201220533278 U CN201220533278 U CN 201220533278U CN 202832681 U CN202832681 U CN 202832681U
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- ammonia
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Abstract
The utility model discloses a steam ammonia cascade power generation system which does not use circulating cooling water to cool steam exhausted by a steam-turbine generator. The steam ammonia cascade power generation system comprises a steam power generation circulation loop. The steam power generation circulation loop is mainly composed of a first steam-turbine generator, a heat exchanger and a heating device, wherein the first steam-turbine generator is driven by steam to generate electricity, the heat exchanger is used for receiving exhaust steam of the first steam-turbine generator through a steam condensation flow passage, and the heating device is used for heating and vaporizing condensation water output from the steam condensation flow passage in the heat exchanger to the steam used for driving the first steam-turbine generator. The heat exchanger is further provided with an ammonia water gasification flow passage connected with the steam condensation flow passage in a heat exchange mode. An output end of the ammonia water gasification flow passage is connected with an ammonia input end of a second steam-turbine generator driven by ammonia to generate electricity. An input end of the ammonia water gasification flow passage is connected with an ammonia water output end of an ammonia water cooling recovery device used for receiving ammonia exhausted from the second steam-turbine generator. The steam-turbine generator, the ammonia water cooling recovery device and the ammonia water gasification flow passage are used for forming an ammonia power generation circulation loop.
Description
Technical field
The utility model relates to power generation system, is specifically related to a kind of steam ammonia cascaded power generating system.
Background technique
As shown in Figure 1, traditional steam generating system is the water that utilizes in the heat heating boiler that the fuel combustions such as coal, oil, rock gas produce, thereby produces high-pressure steam, and then promotes the steam turbine generator generating by water vapour.Afterwards, water vapour enters vapour condenser from the exhaust end of steam turbine generator, with recirculated cooling water generation heat exchange by vapour condenser and change water of condensation into, water of condensation under the effect of water pump, come back to be able in the boiler recycling, the recirculated cooling water that flows out from vapour condenser then enters and carries out air cooling the cooling tower, come back to again after the cooling carry out in the vapour condenser recycling.Obviously, this steam generating system fails the heat in the recirculated cooling water of vapour condenser outflow is utilized.
For the problems referred to above, reference CN202055878U discloses a kind of ammonia power generation system that can utilize the heat in the above-mentioned recirculated cooling water.As shown in Figure 2, this ammonia power generation system is positioned at after the vapour condenser, mainly comprise by ammonia drive generating the second steam turbine generator, receive the ammonia water-cooled recovering device of the second steam turbine generator institute ammonia excretion gas, and be that the second steam turbine generator drives the parts such as heat exchanger with ammonia with the ammoniacal liquor heating and gasifying of ammonia water-cooled recovering device output.Wherein, described heat exchanger comprises a heat exchange unit that is installed 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 an 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 the heat exchanger upper air vent, enters at last the second steam turbine generator to drive its generating.
Obviously, reference still will cool off the water vapour that steam turbine generator is discharged with recirculated cooling water.As shown in Figure 2, for reference, recirculated cooling water is just with the thermal energy transfer of the steam turbine generator steam discharge of the steam generating system intermediate medium to the ammonia power generation system.On the other hand, the heat exchanger in the reference can not carry out supercharging to the ammonia of its generation, therefore, also will set up compressor for ammonia is carried out supercharging in the reference.
The model utility content
Technical problem to be solved in the utility model provides a kind of steam ammonia cascaded power generating system that does not cool off the water vapour that steam turbine generator discharges with recirculated cooling water.
For this reason, the application's steam ammonia cascaded power generating system comprises the steam electric power circulation loop, this steam electric power circulation loop mainly is the first steam turbine generator that is driven generating by water vapor, receive the heat exchanger of this first steam turbine generator steam discharge by the steam condensing stream, and the water of condensation heating of steam condensing stream output in the heat exchanger is vaporizated into the heating equipment that the first steam turbine generator drives with water vapor consists of, also has the ammoniacal liquor gasification stream that is connected with the heat exchange of steam condensing stream in the described heat exchanger, the output terminal of this ammoniacal liquor gasification stream links to each other with the ammonia input end that is driven the second steam turbine generator of generating by ammonia, the input end of this ammoniacal liquor gasification stream links to each other described the second steam turbine generator with the ammoniacal liquor output terminal of the ammonia water-cooled recovering device that receives described the second steam turbine generator institute ammonia excretion gas, ammonia water-cooled recovering device and ammoniacal liquor gasification stream are used for consisting of ammonia power generation cycle loop.
Compare with reference, the application does not re-use recirculated cooling water and cools off the water vapour that the first steam turbine generator is discharged, but directly adopts ammoniacal liquor to cool off the water vapour that the first steam turbine generator is discharged.Ammoniacal liquor because self chemical property is extremely unstable, is decomposed into ammonia and water soon in the water vapour that cooling the first steam turbine generator is discharged, ammonia further a large amount of heat absorptions and volatilization is ammonia, thereby drives the generating of the second steam turbine generator.As seen, although this steam ammonia of the application cascaded power generating system has been cancelled the medium tache of cooling water circulation heat exchange, not having because the simplification of this structure causes the decline of systemic-function, is to have improved heat utilization efficiency in simplied system structure on the contrary.
As to the wherein improvement of heat exchanger structure, described heat exchanger comprises the first heat exchange unit and the second heat exchange unit, the first stream that described the first heat exchange unit comprises the ammonia heating pressurized chamber with suction port and relief opening and is used for this ammonia heating pressurized chamber is heated, described the second heat exchange unit comprise have liquid entering hole, the second stream that the ammoniacal liquor heating and gasifying chamber of liquid port and relief opening and being used for heats this ammoniacal liquor heating and gasifying chamber; The entrance of described the first stream links to each other with the moisture discharge end of the first steam turbine generator, and the outlet of described the second stream links to each other with the water of condensation input end of heating equipment, and the outlet of the first stream is communicated with the entrance of the second stream; Described ammonia heats the suction port of pressurized chamber and the relief opening conducting of ammoniacal liquor heating and gasifying chamber, the relief opening of ammonia heating pressurized chamber links to each other with the ammonia input end of the second steam turbine generator, and the liquid entering hole of ammoniacal liquor heating and gasifying chamber links to each other with the ammoniacal liquor output terminal of ammonia water-cooled recovering device.
Above-mentioned heat exchanger is like this work: the first stream that at first enters the first heat exchange unit from the higher water vapour of temperature of the first steam turbine generator discharge, and then enter the second stream of the second heat exchange unit from the outlet of the first stream, at last from the outlet outflow heat exchanger of the second stream; When it enters the second stream, owing in the first heat exchange unit, having crossed a heat exchange (namely carrying out heat exchange with the ammonia that enters in the ammonia heating pressurized chamber), its temperature significantly descends, at this moment, because the boiling point of ammonia is very low, the ammoniacal liquor that enters the ammoniacal liquor heating and gasifying chamber from liquid entering hole still can be converted into ammonia in a large number, after this, the ammonia that produces in the ammoniacal liquor heating and gasifying chamber enters ammonia heating pressurized chamber, at this moment, these ammonias again with the first stream that just enters the first heat exchange unit in the higher water vapour generation heat exchange of temperature, ammonia further is heated and supercharging, improving the generating efficiency of follow-up the second steam turbine generator, and the remaining liq through heat exchange is discharged from the liquid port of ammoniacal liquor heating and gasifying chamber again in the ammoniacal liquor heating and gasifying chamber.This shows, based on the improvement of heat exchanger structure, the heat exchanger in the application's the steam ammonia cascaded power generating system can directly carry out supercharging to ammonia, realizes the efficient utilization to heat.
As to further improvement in the technical proposal, during this system operation, the inlet temperature of described the second stream 〉=70 ℃ and＜100 ℃.When being controlled at the inlet temperature of the second stream in the above-mentioned interval range, the ammoniacal liquor that is arranged in ammoniacal liquor heating and gasifying chamber does not produce water vapour basically when decomposing the generation ammonia, what so just can guarantee to enter the second steam turbine generator is ammonia entirely almost, thereby to avoid when what enter the second steam turbine generator be the problem that the mixed gas of ammonia and water vapour produces.
As to further improvement in the technical proposal, described the first heat exchange unit and the second heat exchange unit are stacked up and down to be an integral body, ammonia heating pressurized chamber and ammoniacal liquor heating and gasifying chamber up/down perforation.Becoming the first heat exchange unit and the second heat exchange unit stacked up and down design of heat exchanger is an integral body, and after making the form of ammonia heating pressurized chamber and ammoniacal liquor heating and gasifying chamber up/down perforation, not only can improve integrity and the compactedness of equipment, the more important thing is and to shorten the mobile distance of heat transferring medium between the first heat exchange unit and the second heat exchange unit, reduce heat loss, and can reduce the flow resistance of ammonia between the first heat exchange unit and the second heat exchange unit.
Below in conjunction with the drawings and specific embodiments the utility model is described further.The aspect that the application adds and advantage in the following description part provide, and part will become obviously from the following description, or recognize by the application's practice.
Description of drawings
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 application's steam ammonia cascaded power generating system embodiment 1 structural representation.
Fig. 4 is the application's steam ammonia cascaded power generating system embodiment 2 structural representation.
Embodiment
Shown in Fig. 3,4, in fact the application's steam ammonia cascaded power generating system comprises steam generating system and two parts of ammonia power generation system, and wherein, steam generating system has the steam electric power circulation loop, and the ammonia power generation system has ammonia power generation cycle loop.This steam electric power circulation loop mainly is to be driven the first steam turbine generator 4 of generating, received the heat exchanger 3 of these the first steam turbine generator 4 steam discharges by the steam condensing stream by water vapor, and the water of condensation heating of steam condensing stream output in the heat exchanger 3 is vaporizated into the heating equipment 6 that the first steam turbine generator 4 drives with water vapor consists of.Heating equipment 6 generally can adopt the heating boiler of the fuel such as coal combustion, oil, rock gas.Has the ammoniacal liquor gasification stream that is connected with the heat exchange of steam condensing stream in the described heat exchanger 3, the output terminal of this ammoniacal liquor gasification stream links to each other with the ammonia input end that is driven the second steam turbine generator 1 of generating by ammonia, the input end of this ammoniacal liquor gasification stream links to each other with the ammoniacal liquor output terminal of the ammonia water-cooled recovering device 2 that receives 1 ammonia excretion gas of described the second steam turbine generator, and described the second steam turbine generator 1, ammonia water-cooled recovering device 2 and ammoniacal liquor gasification stream are used for consisting of ammonia power generation cycle loop.
Shown in Fig. 3,4, heat exchanger 3 comprise the first heat exchange unit 310 and the second heat exchange unit 320, the first heat exchange units 310 comprise have suction port, the first stream 311 that the ammonia of relief opening heating pressurized chamber 312 and being used for heats this ammonia heating pressurized chamber 312; The second heat exchange unit 320 comprise have liquid entering hole, the second stream 321 that the ammoniacal liquor heating and gasifying chamber 322 of liquid port and relief opening and being used for heats this ammoniacal liquor heating and gasifying chamber 322; The first heat exchange unit 310 and the second heat exchange unit are stacked about in the of 320 to be an integral body, ammonia heating pressurized chamber 312 and ammoniacal liquor heating and gasifying chamber 322 up/down perforations.Shown in Fig. 3,4, the entrance of the first stream 311 links to each other with the moisture discharge end of the first steam turbine generator 4, and the outlet of the second stream 321 links to each other with the water of condensation input end of heating equipment 6, and the outlet of the first stream 311 is communicated with the entrance of the second stream 321.Shown in Fig. 3,4, the 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 links to each other with the ammonia input end of the second steam turbine generator 1, the liquid entering hole of ammoniacal liquor heating and gasifying chamber 322 links to each other with the ammoniacal liquor output terminal of ammonia water-cooled recovering device 2, and the input port of the jet pump 210 of the liquid port of ammoniacal liquor heating and gasifying chamber 322 in piping and ammonia water-cooled recovering device 2 links to each other.
Shown in Fig. 3,4, ammonia water-cooled recovering device 2 comprises tank used for storing ammonia 220 and is arranged on the jet pump 210 of these tank used for storing ammonia 220 tops; 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 links to each other with the ammonia input interface of jet pump 210 by pipeline.
The working procedure of this steam ammonia cascaded power generating system is: the water vapour that discharges from the first steam turbine generator 4 at first enters the first stream 311 of the first heat exchange unit 310, and then enter the second stream 321 of the second heat exchange unit 320 from the outlet of the first stream 311, at last from the outlet outflow heat exchanger 3 of the second stream 321, return heating equipment 6 from the water of condensation of the second stream 321 outflow heat exchangers 3 by the effect of pump 5, after heating equipment 6 reheats, produce again water vapour and again promote 4 generatings of the first steam turbine generator, realize the recycling of water vapour.After water vapour that the first steam turbine generator 4 discharges enters the second stream 321 (this moment, water vapour changed water of condensation into), because it has crossed a heat exchange (namely carrying out heat exchange with the ammonia that enters in the ammonia heating pressurized chamber 312) in the first heat exchange unit 310, its temperature significantly descends, at this moment, because the boiling point of ammonia is lower, the ammoniacal liquor that enters the 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 that produces in the ammoniacal liquor heating and gasifying chamber 322 enters ammonia heating pressurized chamber 312, at this moment, these ammonias again with the first stream 311 that enters the first heat exchange unit 310 in the higher water vapour generation heat exchange of temperature, ammonia further is heated and supercharging, and then from the relief opening of ammonia heating pressurized chamber 312 directly to the second steam turbine generator 1 to drive its generating.Remaining liq (weak aqua ammonia) through heat exchange in the ammoniacal liquor heating and gasifying chamber 322 is discharged from the liquid port of ammoniacal liquor heating and gasifying chamber 322, arrive jet pump 210 by the effect of pump 8, jet pump 210 usefulness weak aqua ammonias come spraying cooling to come from the ammonia that the second steam turbine generator 1 discharges, thereby the ammonia water-cooled is recycled in the tank used for storing ammonia 220, and then by the effect of pump 7 concentrated ammonia liquor in the tank used for storing ammonia 220 is squeezed in the ammoniacal liquor heating and gasifying chamber 322.Substantially do not produce water vapour in the ammoniacal liquor heating and gasifying chamber 322 for making, should control the inlet temperature of described the second stream 321 〉=70 ℃ and＜100 ℃.
Embodiment 1
As shown in Figure 3, the concrete structure of the first heat exchange unit 310 is: ammonia heating pressurized chamber 312 vertically is arranged in the first heat exchange unit 310 and the tube chamber of the spaced apart heat exchanging tube 312a of along continuous straight runs consists of by many, the two ends of these heat exchanging tubes 312a are installed in respectively on the orifice plate 302, the lower end of heat exchanging tube 312a is the suction port of ammonia heating pressurized chamber 312, the upper end is the relief opening of ammonia heating pressurized chamber 312, and the outside of heat exchanging tube 312a consists of the first stream 311 described in the first heat exchange unit 310.The concrete structure of the second heat exchange unit is: the second stream 321 is to be made of the heat exchanging tube that extends in the second heat exchange unit 320, and the outside of heat exchanging tube described in the second heat exchange unit 320 consists of ammoniacal liquor heating and gasifying chamber 322.The heat exchanging tube 312a that adopts in the first heat exchange unit 310 can play good compression to heated ammonia wherein.
Embodiment 2
As shown in Figure 4, the concrete structure of the first heat exchange unit 310 is: the first stream 311 is to be made of the tortuous heat exchanging tube that extends in the first heat exchange unit 310, and the outside of heat exchanging tube described in the first heat exchange unit 310 consists of ammonia heating pressurized chamber 312.The concrete structure of the second heat exchange unit 320 is identical with embodiment 1.
Claims (7)
1. steam ammonia cascaded power generating system, comprise the steam electric power circulation loop, this steam electric power circulation loop mainly is the first steam turbine generator (4) that is driven generating by water vapor, receive the heat exchanger (3) of this first steam turbine generator (4) steam discharge by the steam condensing stream, and the water of condensation heating of steam condensing stream output in the heat exchanger (3) is vaporizated into the heating equipment (6) that the first steam turbine generator (4) drives with water vapor consists of, it is characterized in that: also have the ammoniacal liquor gasification stream that is connected with the heat exchange of steam condensing stream in the described heat exchanger (3), the output terminal of this ammoniacal liquor gasification stream links to each other with the ammonia input end that is driven second steam turbine generator (1) of generating by ammonia, the input end of this ammoniacal liquor gasification stream links to each other described the second steam turbine generator (1) with the ammoniacal liquor output terminal of the ammonia water-cooled recovering device (2) that receives described the second steam turbine generator (1) institute ammonia excretion gas, ammonia water-cooled recovering device (2) and ammoniacal liquor gasification stream are used for consisting of ammonia power generation cycle loop.
2. steam ammonia cascaded power generating system as claimed in claim 1, it is characterized in that: described heat exchanger (3) comprises the first heat exchange unit (310) and the second heat exchange unit (320), the first stream (311) that described the first heat exchange unit (310) comprises the ammonia heating pressurized chamber (312) with suction port and relief opening and is used for this ammonia heating pressurized chamber (312) is heated, described the second heat exchange unit (320) comprises having liquid entering hole, the second stream (321) that the ammoniacal liquor heating and gasifying chamber (322) of liquid port and relief opening and be used for heats this ammoniacal liquor heating and gasifying chamber (322); The entrance of described the first stream (311) links to each other with the moisture discharge end of the first steam turbine generator (4), the outlet of described the second stream (321) links to each other with the water of condensation input end of heating equipment (6), and the outlet of the first stream (311) is communicated with the entrance of the second stream (321); The suction port of described 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) links to each other 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) links to each other with the ammoniacal liquor output terminal of ammonia water-cooled recovering device (2).
3. steam ammonia cascaded power generating system as claimed in claim 2 is characterized in that: during this system operation, the inlet temperature of described the second stream (321) 〉=70 ℃ and＜100 ℃.
4. steam ammonia cascaded power generating system as claimed in claim 2, it is characterized in that: described ammonia heating pressurized chamber (312) vertically is arranged in the first heat exchange unit (310) and the tube chamber of the spaced apart heat exchanging tube of along continuous straight runs (312a) consists of by many, the two ends of these heat exchanging tubes (312a) are installed in respectively on the orifice plate (302), the lower end of heat exchanging tube (312a) is the suction port of ammonia heating pressurized chamber (312), the upper end is the relief opening of ammonia heating pressurized chamber (312), and the outside of heat exchanging tube (312a) consists of the first stream (311) described in the first heat exchange unit (310).
5. steam ammonia cascaded power generating system as claimed in claim 2, it is characterized in that: described the second stream (321) is to be made of the heat exchanging tube that extends in the second heat exchange unit (320), and the outside of heat exchanging tube described in the second heat exchange unit (320) consists of ammoniacal liquor heating and gasifying chamber (322).
6. such as the described steam ammonia of any one claim cascaded power generating system in the claim 2 to 5, it is characterized in that: described the first heat exchange unit (310) is stacked up and down with the second heat exchange unit (320) to be an integral body, ammonia heating pressurized chamber (312) and ammoniacal liquor heating and gasifying chamber (322) up/down perforation.
7. such as the described steam ammonia of any one claim cascaded power generating system in the claim 1 to 5, it is characterized in that: described heating equipment (6) is heating boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533278 CN202832681U (en) | 2012-10-18 | 2012-10-18 | Steam ammonia cascade power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533278 CN202832681U (en) | 2012-10-18 | 2012-10-18 | Steam ammonia cascade power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN202832681U true CN202832681U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220533278 Withdrawn - After Issue CN202832681U (en) | 2012-10-18 | 2012-10-18 | Steam ammonia cascade power generation system |
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| CN (1) | CN202832681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865113A (en) * | 2012-10-18 | 2013-01-09 | 四川京典能源科技有限公司 | Steam and ammonia stair power generation system |
| CN103806967A (en) * | 2014-02-20 | 2014-05-21 | 贾东明 | Power cycle system based on low-temperature heat source |
-
2012
- 2012-10-18 CN CN 201220533278 patent/CN202832681U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865113A (en) * | 2012-10-18 | 2013-01-09 | 四川京典能源科技有限公司 | Steam and ammonia stair power generation system |
| CN103806967A (en) * | 2014-02-20 | 2014-05-21 | 贾东明 | Power cycle system based on low-temperature heat source |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150114 |
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| RGAV | Abandon patent right to avoid regrant |