CN104279013A - Optimized organic Rankine cycle low temperature exhaust heat power generation system - Google Patents
Optimized organic Rankine cycle low temperature exhaust heat power generation system Download PDFInfo
- Publication number
- CN104279013A CN104279013A CN201310283465.8A CN201310283465A CN104279013A CN 104279013 A CN104279013 A CN 104279013A CN 201310283465 A CN201310283465 A CN 201310283465A CN 104279013 A CN104279013 A CN 104279013A
- Authority
- CN
- China
- Prior art keywords
- low
- generator set
- runner
- temperature receiver
- orc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses an optimized organic Rankine cycle low temperature exhaust heat power generation system. A heat source flow channel and a cold source flow channel are opposite in flow direction. In the flow direction of the heat source flow channel, the heat source channel of a first stage ORC generator set, ... , and the heat source channel of an Nth stage ORC generator set are sequentially connected to the same heat source flow channel in series or connected to the same heat source flow channel in parallel or connected with different heat source flow channels. In the flow direction of the cold source flow channel, the cold source channel of the first stage ORC generator set, ... , and the cold source channel of the Nth stage ORC generator set are sequentially connected to the same cold source flow channel in series in the opposite direction or connected to the same cold source flow channel in parallel or connected with different cold source flow channels. According to the optimized organic Rankine cycle low temperature exhaust heat power generation system, the heat carried by a heat source or the cold carried by a cold source can be fully recycled, the cycle efficiency of the system is optimized, and therefore the overall generating capacity is increased, and the optimum cycle efficiency can be achieved; the system design is more flexible, and the adaptability of the system to work conditions is improved.
Description
Technical field
The present invention relates to cogeneration technology field, especially relate to a kind of ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization.
Background technique
The energy that industrial production consumption is a large amount of also produces used heat.For the residual heat resources that taste is higher, due to reasons such as energy transformation ratio are high, comprehensive benefit is good, obtain effective recycling.And the recovery to the lower residual heat resources of some tastes, be then subject to many restrictions.
Generally speaking, if waste heat directly can be utilized by heat user, be the most economical, easily, such as warm-up combustion-supporting air or combustion gas, preheating or dried material, production steam or hot water, etc.In a lot of occasion, neighbouring do not have enough heat user, and cogeneration just becomes a kind of effective way improving energy utilization rate.Wherein, because system is simple, generating efficiency relatively high, organic Rankine bottoming cycle (ORC) becomes the hot spot technology of recovery low temperature exhaust heat for generating electricity at present.
In addition, ORC system is also applied to the recovery generating of Industry Waste cold (such as LNG cold), and its essence is still cogeneration.
The generating efficiency of ORC system is relevant with condensing temperature to the evaporating temperature of working medium.According to thermodynamic theories, higher working medium evaporating temperature and lower condensing temperature can improve the mechanical efficiency of circulation.
At present, for single source (with single low-temperature receiver), the single ORC power generation system of design usually.The evaporating temperature that working medium can reach depends on inlet temperature and the outlet temperature of thermal source.For identical thermal source inlet temperature, higher thermal source outlet temperature can obtain higher working medium evaporating temperature, thus obtains higher mechanical efficiency.
In order to make full use of residual heat resources, always reduce thermal source outlet temperature as far as possible.But if the outlet temperature of available heat sources is lower, by causing, the evaporating temperature of working medium is lower, system will operate in lower cycle efficiency.
The output work of ORC system depends on two aspects: available heat and system effectiveness.In order to increase available heat, thermal source outlet temperature must be reduced; In order to improve system effectiveness, working medium evaporating temperature must be improved.For traditional single ORC system, the requirement of these two aspects can not get both to a certain extent.
The above-mentioned analysis to thermal source is equally applicable to low-temperature receiver.If the outlet temperature of available low-temperature receiver is higher, by causing, the condensing temperature of working medium is higher, and system will operate in lower cycle efficiency.
Summary of the invention
The object of the invention is to the ORC (organic Rankine cycle) low-temperature afterheat generating system designing a kind of novel optimization, solve the problem.
To achieve these goals, the technical solution used in the present invention is as follows:
An ORC (organic Rankine cycle) low-temperature afterheat generating system for optimization, comprises ladder pressure ORC generator set, thermal source and low-temperature receiver, and the thermal source runner be communicated with described low-temperature receiver with described thermal source respectively and low-temperature receiver runner; Described ladder pressure ORC generator set comprises first order ORC generator set ... N level ORC generator set from big to small successively by its working pressure, and wherein N is natural number, and N is more than or equal to 2; Every grade of described ORC generator set includes heat source passages and low-temperature receiver passage;
Described thermal source runner is contrary with the flow direction of described low-temperature receiver runner;
On the flow direction of described thermal source runner, the heat source passages of the described N level ORC generator set of described first order ORC generator set ... is sequentially connected in series in same thermal source runner, or be connected in parallel in same thermal source runner, or connect different thermal source runners respectively;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of the described N level ORC generator set of described first order ORC generator set ... is oppositely sequentially connected in series in same low-temperature receiver runner, or be connected in parallel in same low-temperature receiver runner, or connect different low-temperature receiver runners respectively.
Preferably, described N equals 2, and described ladder pressure ORC generator set comprises high pressure ORC generator set and low pressure ORC generator set;
On the flow direction of described thermal source runner, the heat source passages of described high pressure ORC generator set and described low pressure ORC generator set is sequentially connected in series in same thermal source runner, or be connected in parallel in same thermal source runner, or connect different thermal source runners respectively;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described high pressure ORC generator set and described low pressure ORC generator set is oppositely sequentially connected in series in same low-temperature receiver runner, or be connected in parallel in same low-temperature receiver runner, or connect different low-temperature receiver runners respectively.
Preferably, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
Preferably, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is connected in parallel in same low-temperature receiver runner.
Preferably, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is connected in parallel in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
Preferably, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels connects different low-temperature receiver runners respectively.
Preferably, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels connects different thermal source runners respectively;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
Preferably, every grade of described ORC generator set includes preheater, vaporizer, regenerator, condenser, working medium pump, generator and power supply system, also comprise decompressor or turbine engine; Wherein, described preheater and described vaporizer form described heat source passages, and described condenser forms described low-temperature receiver passage;
Described thermal source 101 flows through described vaporizer and described preheater successively, and described low-temperature receiver 102 flows through condenser;
In described ORC generator set, described regenerator is communicated to by described working medium pump in described condenser, then be communicated with successively by described preheater and described vaporizer, be then communicated to described decompressor or described turbine engine, and then turn back to after described regenerator in described condenser;
Described decompressor or described turbine engine are connected with described generator drive gear, and described generator is electrically connected with described power supply system.
Preferably, the working medium circulation pressure in described ORC generator set at different levels is different; Reduce successively along the working medium evaporating temperature in the described ORC generator set of the flow direction tandem arrangement of described thermal source runner and evaporating pressure; Working fluid condenses temperature in the described ORC generator set of the flow direction tandem arrangement of described low-temperature receiver runner and condensing pressure raise successively.
For traditional ORC system, increase available heat or available cold and improve system effectiveness and sometimes can not take into account simultaneously, this causes residual heat resources can not obtain farthest effectively transforming.
For the problems referred to above, in order to improve the changing effect of residual heat resources, patent of the present invention provides a kind of ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization.Wherein, by carrying out rational interval division to the temperature drop process of single source or single low-temperature receiver, the Land use systems of design thermal source and low-temperature receiver, and at least one item is for being arranged in series; Two or more sets heat exchangers are arranged, to two or more sets ORC generator set heat supplies at thermal source flow direction serial or parallel connection; Each ORC generator set is separate; In cold source flow direction, serial or parallel connection arranges two or more sets heat exchangers, provides cold to two or more sets ORC generator set.
By this technological invention, while fully reclaiming heat from heat source or low-temperature receiver cold, effectively can improve the overall efficiency of ORC circulation, thus increase the overall generated energy of system.
Beneficial effect of the present invention can be summarized as follows:
1, use the present invention, fully can reclaim heat that thermal source carries or the cold that low-temperature receiver carries.
2, the present invention is used, can the cycle efficiency of optimization system, thus increase overall generated energy.
3, use the present invention, owing to segmenting heat source temperature or sink temperature interval, each generator set can adopt different working medium, and to reach optimum cycle efficiency, system is more flexible.By optimal design, overall generated energy can be increased further.
4, use the present invention, the adaptive capacity of system to operating mode can be improved.
Accompanying drawing explanation
Fig. 1 is the system process figure of the embodiment of the present invention 1.
101-thermal source, 102-low-temperature receiver, 103-preheater, 104-vaporizer, 105-decompressor, 106-regenerator, 107-condenser, 108-working medium pump, 109-generator, 110-powers, 103a-preheater, 104a-vaporizer, 105a-decompressor, 106a-regenerator, 107a-condenser, 108a-working medium pump, 109a-generator, 110a-powers.
Fig. 2 is the system process figure of the embodiment of the present invention 2.
201-thermal source, 202-low-temperature receiver, 203-preheater, 204-vaporizer, 205-decompressor, 206-regenerator, 207-condenser, 208-working medium pump, 209-generator, 210-powers, 203a-preheater, 204a-vaporizer, 205a-decompressor, 206a-regenerator, 207a-condenser, 208a-working medium pump, 209a-generator, 210a-powers, 211-low-temperature receiver is shunted, and 211a-low-temperature receiver is shunted, and 212-low-temperature receiver collaborates.
Fig. 3 is the system process figure of the embodiment of the present invention 3.
301-thermal source, 302-low-temperature receiver, 303-preheater, 304-vaporizer, 305-decompressor, 306-regenerator, 307-condenser, 308-working medium pump, 309-generator, 310-powers, 303a-preheater, 304a-vaporizer, 305a-decompressor, 306a-regenerator, 307a-condenser, 308a-working medium pump, 309a-generator, 310a-powers, 311-thermal source is shunted, and 311a-thermal source is shunted, and 312-thermal source collaborates.
Fig. 4 is the system process figure of the embodiment of the present invention 4.
401-thermal source, 402-low-temperature receiver, 402a-low-temperature receiver, 403-preheater, 404-vaporizer, 405-decompressor, 406-regenerator, 407-condenser, 408-working medium pump, 409-generator, 410-powers, 403a-preheater, 404a-vaporizer, 405a-decompressor, 406a-regenerator, 407a-condenser, 408a-working medium pump, 409a-generator, 410a-powers.
Fig. 5 is the system process figure of the embodiment of the present invention 5.
501-thermal source, 501a-thermal source, 502-low-temperature receiver, 503-preheater, 504-vaporizer, 505-decompressor, 506-regenerator, 507-condenser, 508-working medium pump, 509-generator, 510-powers, 503a-preheater, 504a-vaporizer, 505a-decompressor, 506a-regenerator, 507a-condenser, 508a-working medium pump, 509a-generator, 510a-powers.
Embodiment
In order to make technical problem solved by the invention, technological scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The ORC (organic Rankine cycle) low-temperature afterheat generating system of a kind of optimization as Figure 1-Figure 5, comprises ladder pressure ORC generator set, thermal source and low-temperature receiver, and the thermal source runner be communicated with described low-temperature receiver with described thermal source respectively and low-temperature receiver runner; Described ladder pressure ORC generator set comprises first order ORC generator set ... N level ORC generator set from big to small successively by its working pressure, and wherein N is natural number, and N is more than or equal to 2; Every grade of described ORC generator set includes heat source passages and low-temperature receiver passage; Described thermal source runner is contrary with the flow direction of described low-temperature receiver runner; On the flow direction of described thermal source runner, the heat source passages of the described N level ORC generator set of described first order ORC generator set ... is sequentially connected in series in same thermal source runner, or be connected in parallel in same thermal source runner, or connect different thermal source runners respectively; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of the described N level ORC generator set of described first order ORC generator set ... is oppositely sequentially connected in series in same low-temperature receiver runner, or be connected in parallel in same low-temperature receiver runner, or connect different low-temperature receiver runners respectively.Working medium circulation pressure in described ORC generator set at different levels is different; Reduce successively along the working medium evaporating temperature in the described ORC generator set of the flow direction tandem arrangement of described thermal source runner and evaporating pressure; Working fluid condenses temperature in the described ORC generator set of the flow direction tandem arrangement of described low-temperature receiver runner and condensing pressure raise successively.
In the embodiment be more preferably, described N equals 2, and described ladder pressure ORC generator set comprises high pressure ORC generator set and low pressure ORC generator set; On the flow direction of described thermal source runner, the heat source passages of described high pressure ORC generator set and described low pressure ORC generator set is sequentially connected in series in same thermal source runner, or be connected in parallel in same thermal source runner, or connect different thermal source runners respectively; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described high pressure ORC generator set and described low pressure ORC generator set is oppositely sequentially connected in series in same low-temperature receiver runner, or be connected in parallel in same low-temperature receiver runner, or connect different low-temperature receiver runners respectively.
In the embodiment be more preferably, every grade of described ORC generator set includes preheater, vaporizer, regenerator, condenser, working medium pump, generator and power supply system, also comprise decompressor or turbine engine; Wherein, described preheater and described vaporizer form described heat source passages, and described condenser forms described low-temperature receiver passage; Described thermal source 101 flows through described vaporizer and described preheater successively, and described low-temperature receiver 102 flows through condenser; In described ORC generator set, described regenerator is communicated to by described working medium pump in described condenser, then be communicated with successively by described preheater and described vaporizer, be then communicated to described decompressor or described turbine engine, and then turn back to after described regenerator in described condenser; Described decompressor or described turbine engine are connected with described generator drive gear, and described generator is electrically connected with described power supply system.
In certain preferred embodiment, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
In certain preferred embodiment, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is connected in parallel in same low-temperature receiver runner.
In certain preferred embodiment, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is connected in parallel in same thermal source runner; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
In certain preferred embodiment, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels connects different low-temperature receiver runners respectively.
In certain preferred embodiment, on the flow direction of described thermal source runner, the heat source passages of described ORC generator set at different levels connects different thermal source runners respectively; On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
Below illustrate:
Example 1
As shown in Figure 1, thermal source 101, low-temperature receiver 102, high pressure ORC generator set and low pressure ORC generator set is comprised.Wherein, high pressure ORC generator set comprises preheater 103, vaporizer 104, decompressor 105, regenerator 106, condenser 107, working medium pump 108, generator 109 and power supply system 110; Low pressure ORC generator set comprises preheater 103a, vaporizer 104a, decompressor 105a, regenerator 106a, condenser 107a, working medium pump 108a, generator 109a and power supply system 110a.
During operation, the cycle fluid in high pressure ORC generator set has higher evaporating pressure and higher condensing pressure.
First thermal source 101 flows through vaporizer 104 and preheater 103, provides heat to high pressure ORC generator set.Then flow through vaporizer 104a and preheater 103a, provide heat to low pressure ORC generator set.
First low-temperature receiver 102 flows through condenser 107a, provides cold to low pressure ORC generator set.Then flow through condenser 107, provide cold to high pressure ORC generator set.
In High-voltage generator set, liquid circulation working medium flows through regenerator 106 under the driving of working medium pump 108, and send into preheater 103 and vaporizer 104 successively, working medium is heated to gaseous state, then sends into decompressor 105.Decompressor 105 drive electrical generators 109, outwards powers.After decompressor 105 expands externally acting, working medium flows through regenerator 106, and send into condenser 107, working medium is cooled to liquid state, gets back to working medium pump 108, forms circulation loop.Wherein, in regenerator 106, carry out heat exchange from decompressor 105 working medium out with from working medium pump 108 working medium out.
In low voltage generator group, liquid circulation working medium flows through regenerator 106a under the driving of working medium pump 108a, and send into preheater 103a and vaporizer 104a successively, working medium is heated to gaseous state, then sends into decompressor 105a.Decompressor 105a drive electrical generators 109a, outwards powers.After decompressor 105a expands externally acting, working medium flows through regenerator 106a, and send into condenser 107a, working medium is cooled to liquid state, gets back to working medium pump 108a, forms circulation loop.Wherein, in regenerator 106a, carry out heat exchange from decompressor 105a working medium out with from working medium pump 108a working medium out.
By being arranged in series, high pressure ORC generator set can obtain higher evaporating temperature and evaporating pressure, thus obtains higher generating efficiency.
By being arranged in series, low pressure ORC generator set can obtain lower condensing temperature and condensing pressure, thus obtains higher generating efficiency.
This system, while fully reclaiming heat from heat source and low-temperature receiver cold, improves overall cycle efficiency, thus increases gross generation.
In addition, if during heat source temperature fluctuation, less on the impact of low pressure ORC unit.In like manner, the impact of fluctuation on high pressure ORC unit of sink temperature is less.Therefore this system can improve the adaptive capacity to operating mode.
Example 2
As shown in Figure 2, thermal source 201, low-temperature receiver 202, high pressure ORC generator set and low pressure ORC generator set is comprised.Wherein, high pressure ORC generator set comprises preheater 203, vaporizer 204, decompressor 205, regenerator 206, condenser 207, working medium pump 208, generator 209 and power supply system 210; Low pressure ORC generator set comprises preheater 203a, vaporizer 204a, decompressor 205a, regenerator 206a, condenser 207a, working medium pump 208a, generator 209a and power supply system 210a.
During operation, the cycle fluid in high pressure ORC generator set has higher evaporating pressure.
First thermal source 201 flows through vaporizer 204 and preheater 203, provides heat to high pressure ORC generator set.Then flow through vaporizer 204a and preheater 203a, provide heat to low pressure ORC generator set.
Low-temperature receiver 202 is split into two strands, is respectively low-temperature receiver shunting 211 and low-temperature receiver shunting 211a.Low-temperature receiver shunting 211a flows through condenser 207a, provides cold to low pressure ORC generator set.Low-temperature receiver shunting 211 flows through condenser 107, provides cold to high pressure ORC generator set.After two ORC generator set coolings, low-temperature receiver shunting 211 and low-temperature receiver shunting 211a converge into low-temperature receiver interflow 212.
In High-voltage generator set, liquid circulation working medium flows through regenerator 206 under the driving of working medium pump 208, and send into preheater 203 and vaporizer 204 successively, working medium is heated to gaseous state, then sends into decompressor 205.Decompressor 205 drive electrical generators 209, outwards powers.After decompressor 205 expands externally acting, working medium flows through regenerator 206, and send into condenser 207, working medium is cooled to liquid state, gets back to working medium pump 208, forms circulation loop.Wherein, in regenerator 206, carry out heat exchange from decompressor 205 working medium out with from working medium pump 208 working medium out.
In low voltage generator group, liquid circulation working medium flows through regenerator 206a under the driving of working medium pump 208a, and send into preheater 203a and vaporizer 204a successively, working medium is heated to gaseous state, then sends into decompressor 205a.Decompressor 205a drive electrical generators 209a, outwards powers.After decompressor 205a expands externally acting, working medium flows through regenerator 206a, and send into condenser 207a, working medium is cooled to liquid state, gets back to working medium pump 208a, forms circulation loop.Wherein, in regenerator 206a, carry out heat exchange from decompressor 205a working medium out with from working medium pump 208a working medium out.
By being arranged in series, high pressure ORC generator set can obtain higher evaporating temperature and evaporating pressure, thus obtains higher generating efficiency.
This system, while fully reclaiming heat from heat source, improves overall cycle efficiency, thus increases gross generation.
In addition, if during heat source temperature fluctuation, less on the impact of low pressure ORC unit, the adaptive capacity of system to operating mode can be improved.
Example 3
As shown in Figure 3, thermal source 301, low-temperature receiver 302, high pressure ORC generator set and low pressure ORC generator set is comprised.Wherein, high pressure ORC generator set comprises preheater 303, vaporizer 304, decompressor 305, regenerator 306, condenser 307, working medium pump 308, generator 309 and power supply system 310; Low pressure ORC generator set comprises preheater 303a, vaporizer 304a, decompressor 305a, regenerator 306a, condenser 307a, working medium pump 308a, generator 309a and power supply system 310a.
During operation, the cycle fluid in low pressure ORC generator set has lower condensing pressure.
Thermal source 301 is split into two strands, is respectively thermal source shunting 311 and thermal source shunting 311a.Thermal source shunting 311 flows through vaporizer 304 and preheater 303, provides heat to high pressure ORC generator set.Thermal source shunting 311a flows through vaporizer 304a and preheater 303a, provides heat to low pressure ORC generator set.After transferring heat to two ORC generator set, thermal source shunting 311 and thermal source shunting 311a converge into thermal source interflow 312.
First low-temperature receiver 302 flows through condenser 307a, provides cold to low pressure ORC generator set.Then flow through condenser 307, provide cold to high pressure ORC generator set.
In High-voltage generator set, liquid circulation working medium flows through regenerator 306 under the driving of working medium pump 308, and send into preheater 303 and vaporizer 304 successively, working medium is heated to gaseous state, then sends into decompressor 305.Decompressor 305 drive electrical generators 309, outwards powers.After decompressor 305 expands externally acting, working medium flows through regenerator 306, and send into condenser 307, working medium is cooled to liquid state, gets back to working medium pump 308, forms circulation loop.Wherein, in regenerator 306, carry out heat exchange from decompressor 305 working medium out with from working medium pump 308 working medium out.
In low voltage generator group, liquid circulation working medium flows through regenerator 306a under the driving of working medium pump 308a, and send into preheater 303a and vaporizer 304a successively, working medium is heated to gaseous state, then sends into decompressor 305a.Decompressor 305a drive electrical generators 309a, outwards powers.After decompressor 305a expands externally acting, working medium flows through regenerator 306a, and send into condenser 307a, working medium is cooled to liquid state, gets back to working medium pump 308a, forms circulation loop.Wherein, in regenerator 306a, carry out heat exchange from decompressor 305a working medium out with from working medium pump 308a working medium out.
By being arranged in series, low pressure ORC generator set can obtain lower condensing temperature and condensing pressure, thus obtains higher generating efficiency.
This system, while fully reclaiming low-temperature receiver cold, improves overall cycle efficiency, thus increases gross generation.
In addition, if during sink temperature fluctuation, less on the impact of high pressure ORC unit, the adaptive capacity of system to operating mode can be improved.
Example 4
As shown in Figure 4, thermal source 401, low-temperature receiver 402, low-temperature receiver 402a, high pressure ORC generator set and low pressure ORC generator set is comprised.Wherein, high pressure ORC generator set comprises preheater 403, vaporizer 404, decompressor 405, regenerator 406, condenser 407, working medium pump 408, generator 409 and power supply system 410; Low pressure ORC generator set comprises preheater 403a, vaporizer 404a, decompressor 405a, regenerator 406a, condenser 407a, working medium pump 408a, generator 409a and power supply system 410a.
During operation, the cycle fluid in high pressure ORC generator set has higher evaporating pressure.
First thermal source 401 flows through vaporizer 404 and preheater 403, provides heat to high pressure ORC generator set.Then flow through vaporizer 404a and preheater 403a, provide heat to low pressure ORC generator set.
Low-temperature receiver 402 flows through condenser 407, provides cold to high pressure ORC generator set.Low-temperature receiver 402a flows through condenser 407a, provides cold to low pressure ORC generator set.
The operation of ORC generator set is identical with example 1.
By being arranged in series, high pressure ORC generator set can obtain higher evaporating temperature and evaporating pressure, thus obtains higher generating efficiency.
This system, fully reclaiming heat from heat source simultaneously, improves overall cycle efficiency, thus increases gross generation.
Example 5
As shown in Figure 5, thermal source 501, thermal source 501a, low-temperature receiver 502, high pressure ORC generator set and low pressure ORC generator set is comprised.Wherein, high pressure ORC generator set comprises preheater 503, vaporizer 504, decompressor 505, regenerator 506, condenser 507, working medium pump 508, generator 509 and power supply system 510; Low pressure ORC generator set comprises preheater 503a, vaporizer 504a, decompressor 505a, regenerator 506a, condenser 507a, working medium pump 508a, generator 509a and power supply system 510a.
During operation, the cycle fluid in low pressure ORC generator set has lower condensing pressure.
Thermal source 501 flows through vaporizer 504 and preheater 503 successively, provides heat to high pressure ORC generator set.Thermal source 501a flows through vaporizer 504a and preheater 503a successively, provides heat to low pressure ORC generator set.
First low-temperature receiver 502 flows through condenser 507a, provides cold to low pressure ORC generator set.Then flow through condenser 507, provide cold to high pressure ORC generator set.
The operation of ORC generator set is identical with example 1.
By being arranged in series, low pressure ORC generator set can obtain lower condensing temperature and condensing pressure, thus obtains higher generating efficiency.
This system, fully reclaiming low-temperature receiver cold simultaneously, improves overall cycle efficiency, thus increases gross generation.
The present invention is described in detail in preferred embodiment above by concrete; but those skilled in the art should be understood that; the present invention is not limited to the above embodiment; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the ORC (organic Rankine cycle) low-temperature afterheat generating system optimized, is characterized in that: comprise ladder pressure ORC generator set, thermal source and low-temperature receiver, and the thermal source runner be communicated with described low-temperature receiver with described thermal source respectively and low-temperature receiver runner; Described ladder pressure ORC generator set comprises first order ORC generator set ... N level ORC generator set from big to small successively by its working pressure, and wherein N is natural number, and N is more than or equal to 2; Every grade of described ORC generator set includes heat source passages and low-temperature receiver passage;
Described thermal source runner is contrary with the flow direction of described low-temperature receiver runner;
On the flow direction of described thermal source runner, the heat source passages of the described N level ORC generator set of described first order ORC generator set ... is sequentially connected in series in same thermal source runner, or be connected in parallel in same thermal source runner, or connect different thermal source runners respectively;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of the described N level ORC generator set of described first order ORC generator set ... is oppositely sequentially connected in series in same low-temperature receiver runner, or be connected in parallel in same low-temperature receiver runner, or connect different low-temperature receiver runners respectively.
2. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: described N equals 2, and described ladder pressure ORC generator set comprises high pressure ORC generator set and low pressure ORC generator set;
On the flow direction of described thermal source runner, the heat source passages of described high pressure ORC generator set and described low pressure ORC generator set is sequentially connected in series in same thermal source runner, or be connected in parallel in same thermal source runner, or connect different thermal source runners respectively;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described high pressure ORC generator set and described low pressure ORC generator set is oppositely sequentially connected in series in same low-temperature receiver runner, or be connected in parallel in same low-temperature receiver runner, or connect different low-temperature receiver runners respectively.
3. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: on the flow direction of described thermal source runner, and the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
4. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: on the flow direction of described thermal source runner, and the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is connected in parallel in same low-temperature receiver runner.
5. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: on the flow direction of described thermal source runner, and the heat source passages of described ORC generator set at different levels is connected in parallel in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
6. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: on the flow direction of described thermal source runner, and the heat source passages of described ORC generator set at different levels is sequentially connected in series in same thermal source runner;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels connects different low-temperature receiver runners respectively.
7. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: on the flow direction of described thermal source runner, and the heat source passages of described ORC generator set at different levels connects different thermal source runners respectively;
On the flow direction of described low-temperature receiver runner, the low-temperature receiver passage of described ORC generator set at different levels is oppositely sequentially connected in series in same low-temperature receiver runner.
8. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, it is characterized in that: every grade of described ORC generator set includes preheater, vaporizer, regenerator, condenser, working medium pump, generator and power supply system, also comprise decompressor or turbine engine; Wherein, described preheater and described vaporizer form described heat source passages, and described condenser forms described low-temperature receiver passage;
Described thermal source 101 flows through described vaporizer and described preheater successively, and described low-temperature receiver 102 flows through condenser;
In described ORC generator set, described regenerator is communicated to by described working medium pump in described condenser, then be communicated with successively by described preheater and described vaporizer, be then communicated to described decompressor or described turbine engine, and then turn back to after described regenerator in described condenser;
Described decompressor or described turbine engine are connected with described generator drive gear, and described generator is electrically connected with described power supply system.
9. the ORC (organic Rankine cycle) low-temperature afterheat generating system of optimization according to claim 1, is characterized in that: the working medium circulation pressure in described ORC generator set at different levels is different; Reduce successively along the working medium evaporating temperature in the described ORC generator set of the flow direction tandem arrangement of described thermal source runner and evaporating pressure; Working fluid condenses temperature in the described ORC generator set of the flow direction tandem arrangement of described low-temperature receiver runner and condensing pressure raise successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283465.8A CN104279013B (en) | 2013-07-08 | 2013-07-08 | The ORC (organic Rankine cycle) low-temperature afterheat generating system of a kind of optimization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283465.8A CN104279013B (en) | 2013-07-08 | 2013-07-08 | The ORC (organic Rankine cycle) low-temperature afterheat generating system of a kind of optimization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104279013A true CN104279013A (en) | 2015-01-14 |
| CN104279013B CN104279013B (en) | 2016-06-01 |
Family
ID=52254296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310283465.8A Active CN104279013B (en) | 2013-07-08 | 2013-07-08 | The ORC (organic Rankine cycle) low-temperature afterheat generating system of a kind of optimization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104279013B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167086A (en) * | 2017-11-21 | 2018-06-15 | 上海齐耀动力技术有限公司 | A kind of high-pressure oxygen-enriched combustion Stirling electricity generation system and its control method |
| CN111075521A (en) * | 2019-12-18 | 2020-04-28 | 北京石油化工学院 | High-low pressure double working medium ORC power generation system with regenerative cycle |
| CN114352368A (en) * | 2022-01-07 | 2022-04-15 | 北京石油化工学院 | Oil transportation station boiler flue gas waste heat recovery system based on thermoelectric power generation and organic Rankine cycle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106574A (en) * | 1985-08-31 | 1987-03-18 | 奥马蒂系统公司 | Utilize the modified model cascade power station of low temperature and middle temperature source fluid |
| US20040182084A1 (en) * | 2003-02-03 | 2004-09-23 | Kalina Alexander I. | Power cycle and system for utilizing moderate and low temperature heat sources |
| US20080168772A1 (en) * | 2005-03-29 | 2008-07-17 | Utc Power, Llc | Cascaded Organic Rankine Cycles for Waste Heat Utilization |
| WO2009045196A1 (en) * | 2007-10-04 | 2009-04-09 | Utc Power Corporation | Cascaded organic rankine cycle (orc) system using waste heat from a reciprocating engine |
| US20110314818A1 (en) * | 2008-08-04 | 2011-12-29 | United Technologies Corporation | Cascaded condenser for multi-unit geothermal orc |
| CN102691541A (en) * | 2011-03-24 | 2012-09-26 | 株式会社神户制钢所 | Generating apparatus |
| CN203347863U (en) * | 2013-07-08 | 2013-12-18 | 北京华航盛世能源技术有限公司 | Optimized Organic Rankine Cycle (ORC) low temperature exhaust heat power generation system |
-
2013
- 2013-07-08 CN CN201310283465.8A patent/CN104279013B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106574A (en) * | 1985-08-31 | 1987-03-18 | 奥马蒂系统公司 | Utilize the modified model cascade power station of low temperature and middle temperature source fluid |
| US20040182084A1 (en) * | 2003-02-03 | 2004-09-23 | Kalina Alexander I. | Power cycle and system for utilizing moderate and low temperature heat sources |
| US20080168772A1 (en) * | 2005-03-29 | 2008-07-17 | Utc Power, Llc | Cascaded Organic Rankine Cycles for Waste Heat Utilization |
| WO2009045196A1 (en) * | 2007-10-04 | 2009-04-09 | Utc Power Corporation | Cascaded organic rankine cycle (orc) system using waste heat from a reciprocating engine |
| US20110314818A1 (en) * | 2008-08-04 | 2011-12-29 | United Technologies Corporation | Cascaded condenser for multi-unit geothermal orc |
| CN102691541A (en) * | 2011-03-24 | 2012-09-26 | 株式会社神户制钢所 | Generating apparatus |
| CN203347863U (en) * | 2013-07-08 | 2013-12-18 | 北京华航盛世能源技术有限公司 | Optimized Organic Rankine Cycle (ORC) low temperature exhaust heat power generation system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167086A (en) * | 2017-11-21 | 2018-06-15 | 上海齐耀动力技术有限公司 | A kind of high-pressure oxygen-enriched combustion Stirling electricity generation system and its control method |
| CN108167086B (en) * | 2017-11-21 | 2022-06-07 | 上海齐耀动力技术有限公司 | High-pressure oxygen-enriched combustion Stirling power generation system and control method thereof |
| CN111075521A (en) * | 2019-12-18 | 2020-04-28 | 北京石油化工学院 | High-low pressure double working medium ORC power generation system with regenerative cycle |
| CN114352368A (en) * | 2022-01-07 | 2022-04-15 | 北京石油化工学院 | Oil transportation station boiler flue gas waste heat recovery system based on thermoelectric power generation and organic Rankine cycle |
| CN114352368B (en) * | 2022-01-07 | 2023-08-29 | 北京石油化工学院 | Oil delivery station boiler flue gas waste heat recovery system based on thermoelectric generation and organic Rankine cycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104279013B (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107630726B (en) | Multi-energy hybrid power generation system and method based on supercritical carbon dioxide circulation | |
| CN204572095U (en) | The co-generation unit that a kind of low temperature exhaust heat drives | |
| CN109681281B (en) | Biomass cogeneration system capable of simultaneously recovering exhaust steam and flue gas waste heat | |
| CN103836604B (en) | A kind of waste heat recovery cogeneration system | |
| CN108035776B (en) | Thermoelectric decoupling system and operation method | |
| CN102733956B (en) | System and method for fossil fuel and solar energy-complementary distributed energy supply | |
| CN103670548A (en) | Heat and power cogeneration central heating system based on heat pump | |
| CN109026234A (en) | A kind of Organic Rankine Cycle and heat pump driven cogeneration system and combined heat and power method | |
| CN110078904B (en) | Polyester esterification steam waste heat utilization method and device | |
| CN104279013B (en) | The ORC (organic Rankine cycle) low-temperature afterheat generating system of a kind of optimization | |
| CN215057623U (en) | Flexible power generation and heat supply system of thermal power generating unit | |
| CN217002001U (en) | Waste heat utilization device in methanol synthesis process | |
| CN203347863U (en) | Optimized Organic Rankine Cycle (ORC) low temperature exhaust heat power generation system | |
| CN107013272B (en) | Internal combustion engine organic Rankine cycle power generation system based on photo-thermal photoelectric complementation | |
| CN210892819U (en) | Parallel connection type cooling, heating and power three-generation card array nano circulating system device | |
| CN111396160A (en) | Flue gas waste heat cogeneration system and cogeneration method | |
| CN209875234U (en) | Biomass direct-combustion cogeneration system | |
| CN112856563A (en) | Geothermal, solar and biogas combined power generation and heating system | |
| CN216384322U (en) | Multi-steam turbine generator unit exhaust waste heat utilization system | |
| CN109798160A (en) | It is a kind of using boiler waste heat as the organic Rankine cycle power generation system of heat source | |
| CN104832387A (en) | Liquid-nitrogen assisted energy storage tower type solar power plant | |
| CN209991522U (en) | Integrated system for recycling cooling water waste heat without improving backpressure of million-level generator | |
| CN110905765A (en) | Compressed air energy storage system for efficiently utilizing low-grade heat energy and coupling gas turbine | |
| CN217843807U (en) | Aqueous medium energy storage power generation steam supply system | |
| CN209857158U (en) | Integrated system capable of recycling million-level unit cooling water waste heat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20150114 Assignee: Jindingke Chemical Science-Technology Co., Ltd., Beijing Assignor: BEIJING HUAHANG SHENGSHI ENERGY TECHNOLOGY CO., LTD. Contract record no.: 2017990000398 Denomination of invention: Optimized organic Rankine cycle low temperature exhaust heat power generation system Granted publication date: 20160601 License type: Common License Record date: 20171012 |