CN106089344A - The distributed energy electricity generation system of a kind of waste heat Multi-class propagation and method - Google Patents
The distributed energy electricity generation system of a kind of waste heat Multi-class propagation and method Download PDFInfo
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- CN106089344A CN106089344A CN201610588259.1A CN201610588259A CN106089344A CN 106089344 A CN106089344 A CN 106089344A CN 201610588259 A CN201610588259 A CN 201610588259A CN 106089344 A CN106089344 A CN 106089344A
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- steam
- waste heat
- working medium
- organic rankine
- vaporizer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
Abstract
The present invention relates to a kind of distributed energy electricity generation system and the method for waste heat Multi-class propagation.It is higher to there is gas price in distributed energy resource system, bootstrap system inefficient.The distributed energy electricity generation system of the present invention includes gas internal-combustion engine generating set, waste heat boiler and steam type lithium bromide chiller, it is characterized in: also include multistage organic rankine cycle system, multistage organic rankine cycle system includes a regenerator, a number vaporizer, No. two regenerators, preheater, No. three decompressors, No. three condensers and steam and hot water type heat exchanger, a number working medium pump, a number regenerator, a number vaporizer and a decompressor are sequentially connected with, a number decompressor and a regenerator connect, No. two working medium pumps, No. two regenerators, preheater, No. two vaporizers, No. two decompressors and No. two condensers are sequentially connected with, No. three regenerators, No. three vaporizers, No. three decompressors and No. three condensers are sequentially connected with.The reasonable in design of the present invention, the thermal efficiency is high.
Description
Technical field
The present invention relates to a kind of distributed energy electricity generation system and the method for waste heat Multi-class propagation, belong to energy utilization technology
Field.
Background technology
Distributed energy is a kind of energy supply mode building user side in, can independent operating, it is possible to be incorporated into the power networks, be with
Resource, environmental benefit maximize the system determining mode and capacity, according to user's various energy resources demand, and status of resource allocation
Carry out system combination optimization, use demand reply formula design and the novel energy system of modular arrangements, be to supply relative to concentrating
The distributing energy-provision way of energy.
The features such as distributed energy has efficiently, energy-saving and environmental protection, promote the purpose of low-carbon (LC) row.Distributed energy receives
Pay close attention to the most widely.Distributed energy resource system there is also some problems, the country that the current Distribution of Natural formula energy is relevant
Policy is the most uncertain, and gas price is higher, and the efficiency of bootstrap system does not have advantage compared with gas fired-boiler, this
In the case of can effectively utilize distributed energy resource system finish merit waste heat improve distributed energy efficiency be distributed energy
The key of source development.Now the distributed energy of some other structures is also had to utilize system, if publication date is 2013 07 month 24
Day, in the Chinese patent of Publication No. CN203081665U, disclosed a kind of distributed multi-stage solar heat power generation system, and for example
Publication date is on 01 16th, 2013, in the Chinese patent of Publication No. CN102878035A, and disclosed a kind of multi-level solar
With the generating of other energy complementary thermal and polygenerations systeme, these distributed energies utilize the thermal efficiency of system the highest.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency present in prior art, and a kind of reasonable in design be provided,
The distributed energy electricity generation system of the waste heat Multi-class propagation that the thermal efficiency is high and method.
The present invention solve the problems referred to above be the technical scheme is that this waste heat Multi-class propagation distributed energy generating system
System includes gas internal-combustion engine generating set, waste heat boiler and steam type lithium bromide chiller, described gas internal-combustion engine generating set, remaining
Heat boiler and steam type lithium bromide chiller are sequentially connected with, and its construction features is: also include multistage organic rankine cycle system, institute
State multistage organic rankine cycle system include a working medium pump, regenerator, vaporizer, decompressor, No. one cold
Condenser, No. two working medium pumps, No. two regenerators, preheater, No. two vaporizers, No. two decompressors, No. two condensers, No. three working medium
Pump, No. three regenerators, No. three vaporizers, No. three decompressors, No. three condensers and steam and hot water type heat exchanger, a described working medium
Pump, a regenerator, a vaporizer and a decompressor are sequentially connected with, and a described decompressor and a regenerator connect,
A described condenser and a regenerator connect, and a described vaporizer and gas internal-combustion engine generating set connect, and described two
Number working medium pump, No. two regenerators, preheater, No. two vaporizers, No. two decompressors and No. two condensers are sequentially connected with, described steam
Type lithium bromide chiller and a vaporizer are all connected with No. two vaporizers, described No. three working medium pumps, No. three regenerators, No. three evaporations
Device, No. three decompressors and No. three condensers are sequentially connected with, and described waste heat boiler, steam and hot water type heat exchanger and No. three vaporizers depend on
Secondary connection.
As preferably, No. three vaporizers of the present invention and gas internal-combustion engine generating set connect.
The distributed energy generating side that a kind of distributed energy electricity generation system using described waste heat Multi-class propagation is carried out
Method, its feature is: the step of described distributed energy electricity-generating method is as follows:
Described gas internal-combustion engine generating set generates electricity with natural gas for fuel driven engine, and the flue gas of discharge initially enters waste heat
Boiler produces steam drive steam type lithium bromide chiller, heats winter, cooling in summer；
Cycle fluid in one-level organic Rankine bottoming cycle enters a regenerator heating after a working medium pump pressurization, then enters
Enter a vaporizer gasification for number decompressor generating of steam rear drive, the flue gas work that gas internal-combustion engine generating set is discharged simultaneously
Being the thermal source of a vaporizer, exhaust steam enters a condenser and completes the generating of one-level organic Rankine bottoming cycle；
Cycle fluid in two grades of organic Rankine bottoming cycle enters No. two regenerator heating after No. two working medium pump pressurizations, then enters
Entering No. two vaporizer gasifications after entering preheater to generate electricity for No. two decompressors of steam rear drive, a vaporizer is as No. two simultaneously
The thermal source of vaporizer, exhaust steam enters No. two condensers and completes the generating of two grades of organic Rankine bottoming cycle；
Cycle fluid in three grades of organic Rankine bottoming cycle enters No. three regenerator heating after No. three working medium pump pressurizations, then enters
Entering No. three vaporizer gasifications to generate electricity for No. three decompressors of steam rear drive, the steam that waste heat boiler produces simultaneously passes through steam and hot water
Type heat exchanger enters No. three condensers complete the generating of three grades of organic Rankine bottoming cycle as the thermal source of No. three vaporizers, exhaust steam.
As preferably, the distributed energy electricity generation system of waste heat Multi-class propagation of the present invention has three grades of organic Rankines and follows
Ring, the thermal source of three grades of organic Rankine bottoming cycle is respectively flue gas, steam and water.
As preferably, organic working medium of the present invention should be dry working medium.
As preferably, the temperature that gas internal-combustion engine generating set of the present invention is discharged is that 410 DEG C of flue gases are after waste heat boiler
Temperature reduces to 130 DEG C, as a road thermal source of organic working medium；Temperature is that 89 DEG C of jacket water cooling water are through becoming after steam heat-exchanging
It it is 130 DEG C, as the thermal source of second level organic Rankine bottoming cycle；The vapor (steam) temperature of steam type lithium bromide chiller outlet is 50 degrees Celsius
Hot water after flue gas as the thermal source of third level organic Rankine bottoming cycle.
As preferably, one-level organic Rankine bottoming cycle of the present invention, two grades of organic Rankine bottoming cycle and three grades of organic Rankine bottoming cycle are equal
With R245fa as cycle fluid.
The present invention compared with prior art, has the following advantages and effect: the fuel with natural gas as internal combustion engine, has discharge
The advantage of cleaning, bootstrap system uses waste heat boiler and steam type lithium bromide chiller, is simultaneously introduced three grades of organic Rankines and follows
Ring, the temperature that gas internal-combustion engine is discharged is that 410 DEG C of flue gas temperature after waste heat boiler reduce to 130 DEG C, as organic working medium
One road thermal source, temperature be 89 DEG C of jacket waters cooling water through becoming 130 DEG C after steam heat-exchanging, follow as second level organic Rankine
The thermal source of ring, the hot water that vapor (steam) temperature is 50 DEG C of steam type lithium bromide chiller outlet has as the third level after flue gas
The thermal source of machine Rankine cycle.Advantage of the invention is that and three kinds of organic Rankine bottoming cycle are introduced distributed energy resource system, can improve
Net power output, the fuel consumption of reduction gas internal-combustion engine, improve the thermal efficiency of distributed energy resource system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the distributed energy electricity generation system of waste heat Multi-class propagation in the embodiment of the present invention.
In figure: 1-gas internal-combustion engine generating set；2-waste heat boiler；3-steam type lithium bromide chiller；Number working medium pump of 4-；
Number regenerator of 5-；Number vaporizer of 6-；Number decompressor of 7-；Number condenser of 8-；No. bis-working medium pumps of 9-；No. bis-backheats of 10-
Device；11-preheater；No. bis-vaporizers of 12-；No. bis-decompressors of 13-；No. bis-condensers of 14-；No. tri-working medium pumps of 15-；16-tri-
Regenerator；No. tri-vaporizers of 17-；No. tri-decompressors of 18-；No. tri-condensers of 19-；20-steam and hot water type heat exchanger.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are to this
Bright explanation and the invention is not limited in following example.
Embodiment.
Seeing Fig. 1, in the present embodiment, the distributed energy electricity generation system of waste heat Multi-class propagation includes that gas internal-combustion engine generates electricity
Unit 1, waste heat boiler 2, steam type lithium bromide chiller 3 and multistage organic rankine cycle system.
Gas internal-combustion engine generating set 1, waste heat boiler 2 and steam type lithium bromide chiller 3 in the present embodiment are sequentially connected with,
Multistage organic rankine cycle system includes 4, regenerator of a working medium pump, 6, decompressor of 5, vaporizer 7,
Condenser 9, No. two regenerators 10 of 8, No. two working medium pumps, preheater 13, No. two condensations of 12, No. two decompressors of 11, No. two vaporizers
16, No. three vaporizers of 15, No. three regenerators of 14, No. three working medium pumps of device 17, No. three decompressors 18, No. three condensers 19 and steam heats
Water type heat exchanger 20, a working medium pump 5, vaporizer 6 of 4, regenerator and a decompressor 7 be sequentially connected with, and No. one swollen
Swollen machine 7 and a regenerator 5 connect, and a condenser 8 and a regenerator 5 connect, and a vaporizer 6 and gas internal-combustion engine are sent out
Group of motors 1 connects, 9, No. two regenerators 10 of No. two working medium pumps, preheater 12, No. two decompressors 13 of 11, No. two vaporizers and No. two
Condenser 14 is sequentially connected with, and steam type lithium bromide chiller 3 and a vaporizer 6 are all connected with No. two vaporizers 12, No. three working medium
15, No. three regenerators of pump, 17, No. three decompressors 18 of 16, No. three vaporizers and No. three condensers 19 are sequentially connected with, waste heat boiler 2,
Steam and hot water type heat exchanger 20 and No. three vaporizers 17 are sequentially connected with.
No. three vaporizers 17 and gas internal-combustion engine generating set 1 in the present embodiment connect.The exhaust steam of expander outlet is entered
Regenerator should be had before entering condenser.
The present embodiment uses the distributed energy generating side that the distributed energy electricity generation system of waste heat Multi-class propagation is carried out
The step of method is as follows.
Gas internal-combustion engine generating set 1 generates electricity with natural gas for fuel driven engine, and the flue gas of discharge initially enters remaining
Heat boiler 2 produces steam drive steam type lithium bromide chiller 3, heats winter, cooling in summer.
Cycle fluid in one-level organic Rankine bottoming cycle enters a regenerator 5 after working medium pump 4 pressurization and heats,
Generate electricity for number decompressor 7 of steam rear drive subsequently into vaporizer 6 gasification, gas internal-combustion engine generating set 1 row simultaneously
The flue gas gone out enters a condenser 8 complete the generating of one-level organic Rankine bottoming cycle as the thermal source of a vaporizer 6, exhaust steam.
Cycle fluid in two grades of organic Rankine bottoming cycle enters No. two regenerators 10 after No. two working medium pump 9 pressurizations and adds
Heat, generates electricity for No. two decompressors 13 of steam rear drive subsequently into entering the gasification of No. two vaporizers 12 after preheater 11, and simultaneously one
Number vaporizer 6 is as the thermal source of No. two vaporizers 12, and exhaust steam enters No. two condensers 14 and completes sending out of two grades of organic Rankine bottoming cycle
Electricity.
Cycle fluid in three grades of organic Rankine bottoming cycle enters No. three regenerators 16 after No. three working medium pump 15 pressurizations and adds
Heat, generates electricity for No. three decompressors 18 of steam rear drive subsequently into No. three vaporizer 17 gasifications, the steaming that waste heat boiler 2 produces simultaneously
Vapour passes through the steam and hot water type heat exchanger 20 thermal source as No. three vaporizers 17, and exhaust steam No. three condensers 19 of entrance complete three grades to be had
The generating of machine Rankine cycle.
In the present embodiment, the distributed energy electricity generation system of waste heat Multi-class propagation has three grades of organic Rankine bottoming cycle, and three grades have
The thermal source of machine Rankine cycle is respectively flue gas, steam and water.Organic working medium should be dry working medium.One-level organic Rankine bottoming cycle, two grades
Organic Rankine bottoming cycle and three grades of organic Rankine bottoming cycle are all with R245fa as cycle fluid.
The temperature that gas internal-combustion engine generating set 1 in the present embodiment is discharged is 410 DEG C of flue gases temperature after waste heat boiler 2
Degree reduces to 130 DEG C, as a road thermal source of organic working medium；Temperature is that 89 DEG C of jacket water cooling water are through becoming after steam heat-exchanging
130 DEG C, as the thermal source of second level organic Rankine bottoming cycle；The vapor (steam) temperature of steam type lithium bromide chiller 3 outlet is 50 degrees Celsius
Hot water after flue gas as the thermal source of third level organic Rankine bottoming cycle.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named
Titles etc. can be different, and the above content described in this specification is only to present configuration example explanation.All depend on
The equivalence change done according to structure, feature and the principle described in inventional idea of the present invention or simple change, be all included in this
In the protection domain of bright patent.Described specific embodiment can be done various by those skilled in the art
The amendment of various kinds or supplement or use similar mode to substitute, without departing from the structure of the present invention or surmount present claims
Scope defined in book, all should belong to protection scope of the present invention.
Claims (7)
1. a distributed energy electricity generation system for waste heat Multi-class propagation, including gas internal-combustion engine generating set (1), waste heat boiler
And steam type lithium bromide chiller (3), described gas internal-combustion engine generating set (1), waste heat boiler (2) and steam type lithium bromide (2)
Unit (3) is sequentially connected with, it is characterised in that: also include multistage organic rankine cycle system, described multistage organic Rankine bottoming cycle system
System include a working medium pump (4), regenerator (5), vaporizer (6), decompressor (7), condenser (8),
No. two working medium pumps (9), No. two regenerators (10), preheater (11), No. two vaporizers (12), No. two decompressors (13), No. two cold
Condenser (14), No. three working medium pumps (15), No. three regenerators (16), No. three vaporizers (17), No. three decompressors (18), No. three condensations
Device (19) and steam and hot water type heat exchanger (20), a described working medium pump (4), a regenerator (5), a vaporizer (6) and
A number decompressor (7) is sequentially connected with, and a described decompressor (7) and a regenerator (5) connect, a described condenser (8)
Connecting with a regenerator (5), a described vaporizer (6) and gas internal-combustion engine generating set (1) connect, described No. two working medium
Pump (9), No. two regenerators (10), preheater (11), No. two vaporizers (12), No. two decompressors (13) and No. two condensers (14)
Being sequentially connected with, described steam type lithium bromide chiller (3) and a vaporizer (6) are all connected with No. two vaporizers (12), and described three
Number working medium pump (15), No. three regenerators (16), No. three vaporizers (17), No. three decompressors (18) and No. three condensers (19) are successively
Connecting, described waste heat boiler (2), steam and hot water type heat exchanger (20) and No. three vaporizers (17) are sequentially connected with.
The distributed energy electricity generation system of waste heat Multi-class propagation the most according to claim 1, it is characterised in that: described No. three
Vaporizer (17) and gas internal-combustion engine generating set (1) connect.
3. the distribution that the distributed energy electricity generation system using waste heat Multi-class propagation as claimed in claim 1 or 2 is carried out
Formula energy generation method, it is characterised in that: the step of described distributed energy electricity-generating method is as follows:
Described gas internal-combustion engine generating set (1) generates electricity with natural gas for fuel driven engine, and the flue gas of discharge initially enters
Waste heat boiler (2) produces steam drive steam type lithium bromide chiller (3), heats winter, cooling in summer；
Cycle fluid in one-level organic Rankine bottoming cycle enters regenerator (5) heating after working medium pump (4) pressurization,
It is number decompressor (7) generating of steam rear drive, gas internal-combustion engine generating set simultaneously subsequently into vaporizer (6) gasification
(1) flue gas discharged completes one-level organic Rankine follow as the thermal source of a vaporizer (6), an exhaust steam number condenser (8) of entrance
The generating of ring；
Cycle fluid in two grades of organic Rankine bottoming cycle enters No. two regenerators (10) after No. two working medium pump (9) pressurizations and adds
Heat, enters No. two vaporizer (12) gasifications afterwards and generates electricity for No. two decompressors (13) of steam rear drive subsequently into preheater (11),
Vaporizer (6) is as the thermal source of No. two vaporizers (12) simultaneously, exhaust steam enter No. two condensers (14) complete two grades organic
The generating of Rankine cycle；
Cycle fluid in three grades of organic Rankine bottoming cycle enters No. three regenerators (16) after No. three working medium pump (15) pressurizations and adds
Heat, is No. three decompressor (18) generatings of steam rear drive subsequently into No. three vaporizer (17) gasifications, and waste heat boiler (2) produces simultaneously
Raw steam passes through the steam and hot water type heat exchanger (20) thermal source as No. three vaporizers (17), and exhaust steam enters No. three condensers
(19) generating of three grades of organic Rankine bottoming cycle is completed.
The distributed energy electricity-generating method of waste heat Multi-class propagation the most according to claim 3, it is characterised in that: described waste heat
The distributed energy electricity generation system of Multi-class propagation has three grades of organic Rankine bottoming cycle, and the thermal source of three grades of organic Rankine bottoming cycle is respectively
Flue gas, steam and water.
The distributed energy electricity-generating method of waste heat Multi-class propagation the most according to claim 3, it is characterised in that: organic working medium
Should be dry working medium.
The distributed energy electricity-generating method of waste heat Multi-class propagation the most according to claim 3, it is characterised in that: combustion gas internal combustion
The temperature that machine generating set (1) is discharged is that 410 DEG C of flue gases temperature after waste heat boiler (2) reduces to 130 DEG C, as organic working medium
A road thermal source；Temperature be 89 DEG C of jacket waters cooling water through becoming 130 DEG C after steam heat-exchanging, as second level organic Rankine
The thermal source of circulation；The hot water that vapor (steam) temperature is 50 degrees Celsius that steam type lithium bromide chiller (3) exports does after flue gas
Thermal source for third level organic Rankine bottoming cycle.
The distributed energy electricity-generating method of waste heat Multi-class propagation the most according to claim 3, it is characterised in that: one-level is organic
Rankine cycle, two grades of organic Rankine bottoming cycle and three grades of organic Rankine bottoming cycle are all with R245fa as cycle fluid.
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| CN109026223A (en) * | 2018-08-29 | 2018-12-18 | 华电电力科学研究院有限公司 | Cool and thermal power comprehensive energy integrated system and working method based on gas internal-combustion engine and fuel cell alliance |
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| CN114357666A (en) * | 2022-03-17 | 2022-04-15 | 华电电力科学研究院有限公司 | Operation optimization method and system for in-service organic Rankine cycle system |
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