CN108343482A - Birotor expanding machine is connected the device for generating power by waste heat of organic Rankine cycle expansion machine - Google Patents
Birotor expanding machine is connected the device for generating power by waste heat of organic Rankine cycle expansion machine Download PDFInfo
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- CN108343482A CN108343482A CN201810348058.3A CN201810348058A CN108343482A CN 108343482 A CN108343482 A CN 108343482A CN 201810348058 A CN201810348058 A CN 201810348058A CN 108343482 A CN108343482 A CN 108343482A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000009466 transformation Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 19
- 238000010248 power generation Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims 2
- 238000009833 condensation Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
-
- 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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- 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
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
Abstract
A kind of birotor expanding machine is disclosed to connect the device for generating power by waste heat of organic Rankine cycle expansion machine, including：Material water- to-water heat exchanger is configured as realizing the heat exchange between high temperature material and water at low temperature, generates medium pressure steam；Birotor expanding machine is configured as receiving medium pressure steam, so that medium pressure steam is entered in expansion chamber and expand, and pushes internal rotor and outer rotor rotation, so that the axis being connected with internal rotor is driven the first electrical power generators, and throttled steam is discharged；And Organic Rankine Cycle expanding machine, it is configured as receiving throttled steam, throttled steam is set to carry out heat exchange with organic working medium in its evaporator, organic working medium phase transformation is set to be evaporated to high pressure steam, impeller-hub rotates, the second electrical power generators are driven, and the organic working medium after acting is made to be condensed into liquid within the condenser, evaporator is returned by working medium pump again；And it is condensed into water at low temperature after making heat exchange of the throttled steam in evaporator, returns to material water- to-water heat exchanger.
Description
Technical field
The present invention relates to the recyclings of material waste heat in the industries such as petrochemical industry, and in particular to a kind of birotor expanding machine series connection
The device for generating power by waste heat and method of Organic Rankine Cycle expanding machine.
Technical background
Refinery usually has larger electricity needs, and all kinds of motors, water pump, wind turbine in technological process need a large amount of
Electric power.At present usually using the power supply of power plant for self-supply, insufficient section outsourcing electric power meets production requirement, power cost
It is high.Usually there is abundant medium temperature waste heat/waste heat (temperature of charge in refinery simultaneously>150 DEG C), the latent amount of resource is huge, this
A little heats are usually emitted into after the modes such as air-cooled or water cooling exchange heat in air, cause huge energy waste.Recirculated water or wind
Machine etc. also needs to consume a large amount of electric power in the process, and the water consume expense of water-cooling tower also can not be underestimated.
Invention content
In one aspect of the invention, a kind of birotor expanding machine is provided to connect the waste heat of organic Rankine cycle expansion machine
Power generator, including：Material-water- to-water heat exchanger is configured as realizing the heat exchange between high temperature material and water at low temperature, from
And generate medium pressure steam；Birotor expanding machine is configured as receiving the medium pressure steam, makes the medium temperature and medium pressure
Steam, which enters in expansion chamber, to be expanded, and internal rotor and outer rotor rotation are pushed, to make the axis being connected with internal rotor drive the first hair
Electric power generation, and throttled steam is discharged；And Organic Rankine Cycle expanding machine, it is configured as receiving the throttled steam, make
The throttled steam carries out heat exchange in its evaporator with organic working medium, and the organic working medium phase transformation is made to be evaporated to high pressure steaming
Gas, impeller-hub rotation, to drive the second electrical power generators, and makes the organic working medium after acting be condensed into liquid within the condenser
State is returned the evaporator by working medium pump again, realizes the closed cycle of working medium；And make the throttled steam in the evaporator
In heat exchange after be condensed into water at low temperature, return to the material-water- to-water heat exchanger.
In another aspect of the present invention, provides a kind of birotor expanding machine and connect the remaining of organic Rankine cycle expansion machine
Thermal power generation method, including：Heat exchange between high temperature material and water at low temperature is realized by material-water- to-water heat exchanger, to generate
Medium pressure steam；The medium pressure steam is received by birotor expanding machine, the medium pressure steam is made to enter expansion chamber
Middle expansion pushes internal rotor and outer rotor rotation, to make the axis being connected with internal rotor drive the first electrical power generators, and is discharged
Throttled steam；The throttled steam is received by Organic Rankine Cycle expanding machine, make the throttled steam in its evaporator with have
Machine working medium carries out heat exchange, and the organic working medium phase transformation is made to be evaporated to high pressure steam, impeller-hub rotation, to drive the second hair
Electric power generation, and the organic working medium after acting is made to be condensed into liquid within the condenser, return the evaporator again by working medium pump,
Realize the closed cycle of working medium；And it is condensed into water at low temperature after making heat exchange of the throttled steam in the evaporator, it returns
Return the material-water- to-water heat exchanger.
Art scheme according to an embodiment of the invention, more than the series connection organic Rankine expanding machine progress of birotor expanding machine
Heat power generation, medium temperature waste heat that can be in cascade utilization petrochemical industry refinery provide some electrical power and supply, while can also save to be produced factory in
The expenses such as water consume/power consumption that recirculated water or wind turbine etc. need originally.
Description of the drawings
Fig. 1 schematically shows birotor expanding machine series connection Organic Rankine Cycle expansion according to an embodiment of the invention
The device for generating power by waste heat of machine；
Fig. 2 schematically shows birotor expanding machine according to an embodiment of the invention series connection Organic Rankine Cycle expansions
The method for power generation by waste heat of machine.
Specific implementation mode
Detailed description of the present invention embodiment with reference to the accompanying drawings.In the following description, numerous specific details are set forth
To make person of ordinary skill in the field that the present invention be appreciated more fully.But for the technology in technical field
Personnel are it is evident that the present invention's realizes some that can not have in these details.However, it should be understood that this hair
It is bright to be not limited to introduced specific embodiment.On the contrary, it may be considered that implemented with the arbitrary combination of following feature and element
The present invention, regardless of whether they are related to different embodiments.Therefore, aspect, feature, embodiment and advantage below is only said
Bright be used and element or the restriction for being not construed as claim, unless clearly proposing in the claims.
Referring now to Fig. 1, that schematically shows a kind of birotor expanding machines according to an embodiment of the invention to be in series with
The device for generating power by waste heat 100 of machine Rankine cycle expansion machine (ORC).As shown in fig. 1, the birotor expanding machine series connection is organic bright
Agree cycle expanding machine device for generating power by waste heat 100 include：Material-water- to-water heat exchanger 110, birotor expanding machine 120 and organic bright
Agree cycle expanding machine 130.
Material-the water- to-water heat exchanger 110 is configured as realizing the heat exchange between high temperature material and water at low temperature, to
Generate medium pressure steam.
The temperature of the high temperature material can be for example 180-230 DEG C, can be any technique of refinery
High temperature material with waste heat caused by the process.The water at low temperature for example can be swollen from the Organic Rankine Cycle
The condensed water of swollen machine 130, temperature for example can be 65-80 DEG C.
The temperature of the medium pressure steam caused by after heat exchange for example can be 130-150 DEG C, pressure
Such as can be 0.3-0.45MPa.Correspondingly, the temperature of the high temperature material can for example be reduced to 140- after heat exchange
180℃。
Material-the water- to-water heat exchanger 110 can be any heat exchange that can be realized between high temperature material and water at low temperature
Device, such as pipe shell type heat exchange device.
Material-the water- to-water heat exchanger 110 can have high temperature material inlet and material outlet and low temperature water inlet in
Middle benefit gas presses steam (vapor) outlet, and can include the heating agent water lines and material for side by side or being arranged alternately and being closely contacted with each other inside it
Pipeline, the heating agent water lines and the low temperature water inlet and medium pressure steam outlet are connected, the material pipeline with it is described
High temperature material inlet is connected with material outlet, so as to realize flow through the heating agent water lines water at low temperature (its be used as heat
Matchmaker's water) and flow through the heat exchange between the high temperature material of the material pipeline so that the low temperature coolant-temperature gage increases, in becoming
Warm middle pressure steam, correspondingly, high temperature material reduce its temperature.
The material inlet of the material-water- to-water heat exchanger 110 for example can be with the first technological process pipeline phase of refinery
Even, to receive the high temperature material, and the material outlet of the material-water- to-water heat exchanger 110 can be with the of refinery
Two technological process pipelines are connected, and the material to cool down after heat exchange is discharged to the second technological process pipeline.Described
One technological process pipeline and the second technological process pipeline can be the same technological process pipelines, can also be different work
Skill flow pipeline.
The birotor expanding machine 120, which can be configured as, receives the medium pressure steam, and the medium temperature and medium pressure is made to steam
Vapour, which enters in expansion chamber, to be expanded, and internal rotor and outer rotor rotation are pushed, to make the axis being connected with internal rotor drive the first power generation
Machine (not shown) generates electricity, and throttled steam is discharged.
The birotor expanding machine 120 can be any kind of birotor expanding machine known in the art.It is described double
Rotor expansion machine 120 may include shell, expansion chamber, the internal rotor in expansion chamber and outer rotor and be connected with internal rotor
Axis.Since outer rotor and internal rotor be not coaxial, and the rotating speed of outer rotor and the rotating speed of internal rotor are inconsistent, therefore are rotating
During, the volume of the cavity formed between the tooth of internal rotor and the groove of outer rotor gradually increases, and is transitioned into and outlet plenum
Coupling achievees the purpose that expansion decompression.When the medium pressure steam enters expansion chamber, expansion work drives internal rotor to turn
It is dynamic, it is discharged by the external output mechanical energy of the axis being connected with internal rotor, and as throttled steam.The axis being connected with internal rotor
It is connected with the axis of the first generator, to drive the first electrical power generators.
The temperature for the throttled steam being discharged by the birotor expanding machine 120 for example can be 85-130 DEG C or so,
Its pressure for example can be 0.06-0.27MPa.
The Organic Rankine Cycle expanding machine 130, which can be configured as, receives the throttled steam, makes the throttled steam
Heat exchange is carried out with organic working medium in its evaporator 131, the organic working medium phase transformation is made to be evaporated to high pressure steam, impeller-hub
Rotation to drive the power generation of the second generator (not shown), and makes the organic working medium after acting be condensed into liquid in condenser 132
State returns the evaporator 131 by working medium pump (not shown), realizes the closed cycle of working medium again；And make the throttled steam
It is condensed into water at low temperature after heat exchange in the evaporator 131, returns to the material-water- to-water heat exchanger 110.That is,
The evaporator 131 had not only been used as the evaporator of the Organic Rankine Cycle expanding machine 130, but also was used as the birotor expanding machine
120 condenser.
The Organic Rankine Cycle expanding machine 130 can be that any kind of Organic Rankine Cycle known in the art is swollen
Swollen machine.As it is known in the art, Organic Rankine Cycle expanding machine 130 may include expansion chamber, impeller, impeller axle etc..At some
In embodiment, the evaporator 131, condenser 132 and working medium pump can also be deemed to be included in the Organic Rankine Cycle expansion
In machine 130.When the throttled steam that the birotor expanding machine 120 is discharged enters the Organic Rankine Cycle expanding machine 130
After evaporator 131, by its heat transfer to the organic working medium in evaporator 131.The organic working medium can low-boiling be had
Machine working medium, such as R245fa.Phase transformation is evaporated to high pressure steam after the organic working medium heat absorption, into Organic Rankine Cycle expanding machine
Expansion work in 130 expansion chamber, pushes impeller and impeller shaft rotation is dynamic, and then drives the second power generation being connected with impeller axle
Machine generates electricity.The organic working medium enters condenser 132 after expansion is done manual work, and liquid is condensed into condenser 132, and by working medium
Pump returns the evaporator 131 again, completes the closed cycle of organic working medium.In addition, in evaporator 131, the decompression is steamed
Vapour is condensed into water at low temperature, and return to the material-water- to-water heat exchanger 110, completes heat medium water after exchanging heat with the organic working medium
Closed cycle.The water at low temperature for example can return to the material-water- to-water heat exchanger 110 by steam/water circulating pipeline and pump.
Evaporator of the throttled steam from the birotor expanding machine 120 in the Organic Rankine Cycle expanding machine 130
After heat exchange being carried out in 131 with organic working medium, the condensable water at low temperature for being, for example, 65-80 DEG C for temperature, and organic work
Matter can be evaporated to the high pressure steam that pressure is, for example, 1.4MPa or so.
Birotor expanding machine according to an embodiment of the invention is connected the device for generating power by waste heat of organic Rankine cycle expansion machine
100, be combined with birotor expanding machine power generation and Organic Rankine Cycle expanding machine power generation, can with step, more fully utilize stone
Change oil plant in high temperature material waste heat, for factory in produce provide some electrical power supply, while can also save recirculated water or
The expenses such as water consume/power consumption that wind turbine etc. needs originally.
It is swollen that birotor expanding machine series connection Organic Rankine Cycle according to an embodiment of the invention is described above by reference to attached drawing
The device of the cogeneration of swollen machine, it is noted that above description and diagram are merely illustrative, rather than limiting the invention.
In other embodiments of the invention, which can have more, less or different component, and connection between each component,
Including can be with described and diagram difference with the relationships such as function.For example, usually multiple components can be merged into a bigger
Component and single part can be split as multiple smaller components.For another example the title of each component is not to the present invention
Limitation.
In another aspect of the present invention, additionally provides a kind of birotor expanding machine and connect organic Rankine cycle expansion machine
Method for power generation by waste heat.
Referring now to Fig. 2, it illustrates birotor expanding machine according to an embodiment of the invention series connection Organic Rankine Cycle is swollen
The method for power generation by waste heat of swollen machine.As shown in Figure 2, this approach includes the following steps：
In step 201, the heat exchange between high temperature material and water at low temperature is realized by material-water- to-water heat exchanger, to produce
Raw medium pressure steam；
In step 202, the medium pressure steam is received by birotor expanding machine, so that the medium pressure steam is entered swollen
It is expanded in swollen chamber, pushes internal rotor and outer rotor rotation, to make the axis being connected with internal rotor drive the first electrical power generators, and
Throttled steam is discharged；
In step 203, the throttled steam is received by Organic Rankine Cycle expanding machine, makes the throttled steam in its evaporation
Heat exchange is carried out with organic working medium in device, the organic working medium phase transformation is made to be evaporated to high pressure steam, impeller-hub rotation, to band
Dynamic second electrical power generators, and the organic working medium after acting is made to be condensed into liquid within the condenser, return institute again by working medium pump
Evaporator is stated, realizes the closed cycle of working medium；And it is condensed after making heat exchange of the throttled steam in the evaporator
For water at low temperature, the material-water- to-water heat exchanger is returned.
In some exemplary embodiments, the material inlet of the material-water- to-water heat exchanger can be with the of refinery
One technological process pipeline is connected, and to receive the high temperature material, and the material outlet of the material-water- to-water heat exchanger can be with stone
The the second technological process pipeline for changing oil plant is connected, and the material to cool down after heat exchange is discharged to second technological process
Pipeline.
In some exemplary embodiments, the temperature of the high temperature material may be 180-230 DEG C, the throttled steam
Temperature can be 130-150 DEG C, the temperature of the water at low temperature condensed in the evaporator is 65-80 DEG C.
It is swollen that birotor expanding machine series connection Organic Rankine Cycle according to an embodiment of the invention is described above by reference to attached drawing
The method for power generation by waste heat of swollen machine, it is noted that above description and diagram are merely illustrative, rather than limiting the invention.
In the other embodiment of the present invention, this method can have more, less or different step, and the sequence between each step, packet
Containing with functional relationship can with it is described and diagram difference.
The foregoing description to the embodiment of the present invention has been provided for the purpose of illustration and description, there is illustrated permitted
The example of more details, such as particular elements and device, to provide a thorough understanding of embodiments of the present invention, purpose is not
It is exhausted or the limitation present invention.The each element or feature of specific embodiment is typically not limited to the specific embodiment, but
It is interchangeable under applicable circumstances and can uses in other embodiments, even if is not shown or described in detail.This
The variation of sample is not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of this invention.
In some example embodiments, it is not described in well known component, structure and well known technology.
Term used herein is only used for the purpose of description specific example embodiments, and is not intended to be restrictive.This Shen
Please in each component title be only for sake of convenience depending on, rather than limiting the invention.As it is used herein, on unless
It explicitly points out additionally below, otherwise singulative " one ", "one" and "the" can also be intended to include plural form.Term " packet
Include ", " comprising ", "comprising" and " having " are inclusives, therefore specify the feature, entity, step, operation, element and/or
The presence of component, but do not exclude the presence of or other one or more features, entity, step, operation, component, assembly unit and/or its group
The addition of conjunction.Step, process and operation described herein is not interpreted to necessarily require them specific with what is discussed or show
Sequence executes, and executes sequence unless specifically specified.
It, can when element is referred to as in another element "upper", " being joined to ", " being connected to " or " being coupled to " another element
Located immediately at, engage, be connected or coupled to other elements, or may exist intermediary element.For describing relationship between element
Other words should explain in a similar way (for example, " ... between " and " between directly existing ... ", " adjacent " with " directly
It is adjacent " etc.).As used herein, " connection ", " connected " or similar terms, in the case where no other clearly limit,
Any one or more of mechanical connection, electrical connection, communication connection can be referred to.In addition, as it is used herein, term " and/
Or ", " and/or " include one or more related Listed Items any and all combinations.
Although term first, second, third, etc. may be used herein to describe various component, assembly units and/or part,
These component, assembly units and/or part should not necessarily be limited to these terms.These terms are only used to distinguish a component, assembly unit or
Part and another component, assembly unit or part.Unless explicitly point out within a context, otherwise such as " first ", " second " and its
He is not meant to order or sequence by the term of numerical terms as used herein.Therefore, the first element in the application, group
Part or part can be referred to as second element, component or part, without departing from example embodiment introduction the case where.
For ease of description, such as " inside ", " outside ", " following ", " lower section ", " above ", " top " etc. can be used herein
Space correlation term, an element or feature and another element or the relationship as illustrated in the drawing of feature are described.In addition to figure
Shown in be orientated except, spatially relative term can be intended to include device in using or operating different orientation.For example, such as
Equipment overturning in fruit attached drawing, then being described as be in other elements or the element of feature " lower section " or " following " will be oriented in
Other elements or features " on ".Therefore, exemplary term " in ... lower section " can include above and below orientation.Device
It can otherwise orient and (be rotated by 90 ° or in other directions), and correspondingly spatial description as used herein should be opposite
It explains on ground.
Although the present invention is disclosed as above by embodiment, present invention is not limited to this.Those skilled in the art
Various changes and modification, should all be included in protection scope of the present invention made by without departing from the spirit and scope of the present invention, this
The protection domain of invention be only subject to claim language and its language limited range of equal value.
Claims (6)
- The device for generating power by waste heat of organic Rankine cycle expansion machine 1. a kind of birotor expanding machine is connected, including：Material-water- to-water heat exchanger is configured as realizing the heat exchange between high temperature material and water at low temperature, to generate medium temperature Middle pressure steam；Birotor expanding machine is configured as receiving the medium pressure steam, the medium pressure steam is made to enter expansion chamber Middle expansion pushes internal rotor and outer rotor rotation, to make the axis being connected with internal rotor drive the first electrical power generators, and is discharged Throttled steam；AndOrganic Rankine Cycle expanding machine is configured as receiving the throttled steam, makes the throttled steam in its evaporator Heat exchange is carried out with organic working medium, the organic working medium phase transformation is made to be evaporated to high pressure steam, impeller-hub rotation, to drive the Two electrical power generators, and the organic working medium after acting is made to be condensed into liquid within the condenser, return the steaming again by working medium pump Device is sent out, realizes the closed cycle of working medium；And make to be condensed into after heat exchange of the throttled steam in the evaporator low Warm water returns to the material-water- to-water heat exchanger.
- The device for generating power by waste heat of organic Rankine cycle expansion machine 2. birotor expanding machine according to claim 1 is connected, In, the material inlet of the material-water- to-water heat exchanger is connected with the first technological process pipeline of refinery, with receive it is described in High-temperature material, and the material outlet of the material-water- to-water heat exchanger is connected with the second technological process pipeline of refinery, it will The material to cool down after heat exchange is discharged to the second technological process pipeline.
- The device for generating power by waste heat of organic Rankine cycle expansion machine 3. birotor expanding machine according to claim 1 or 2 is connected, Wherein, the temperature of the high temperature material is 180-230 DEG C, and the temperature of the throttled steam is 85-130 DEG C, the evaporator The temperature of the water at low temperature of middle condensation is 65-80 DEG C.
- The method for power generation by waste heat of organic Rankine cycle expansion machine 4. a kind of birotor expanding machine is connected, including：Heat exchange between high temperature material and water at low temperature is realized by material-water- to-water heat exchanger, to generate medium pressure steam；The medium pressure steam is received by birotor expanding machine, so that the medium pressure steam is entered in expansion chamber and expands, push away Dynamic internal rotor and outer rotor rotation, to make the axis being connected with internal rotor drive the first electrical power generators, and are discharged throttled steam；The throttled steam is received by Organic Rankine Cycle expanding machine, make the throttled steam in its evaporator with organic working medium Heat exchange is carried out, the organic working medium phase transformation is made to be evaporated to high pressure steam, impeller-hub rotation, to drive the second generator hair Electricity, and the organic working medium after acting is made to be condensed into liquid within the condenser, it returns the evaporator again by working medium pump, realizes work The closed cycle of matter；And it is condensed into water at low temperature after making heat exchange of the throttled steam in the evaporator, returns to institute State material-water- to-water heat exchanger.
- 5. the cogeneration side of organic Rankine cycle expansion machine according to claim 4 of being connected using birotor expanding machine Method, wherein the material inlet of the material-water- to-water heat exchanger is connected with the first technological process pipeline of refinery, to receive The high temperature material, and the second technological process pipeline phase of the material outlet of the material-water- to-water heat exchanger and refinery Even, the material to cool down after heat exchange is discharged to the second technological process pipeline.
- The method for power generation by waste heat of organic Rankine cycle expansion machine 6. birotor expanding machine according to claim 4 or 5 is connected, Wherein, the temperature of the high temperature material is 180-230 DEG C, and the temperature of the throttled steam is 85-130 DEG C, the evaporator The temperature of the water at low temperature of middle condensation is 65-80 DEG C.
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| CN201810348058.3A CN108343482A (en) | 2018-04-18 | 2018-04-18 | Birotor expanding machine is connected the device for generating power by waste heat of organic Rankine cycle expansion machine |
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