CN108661734A - A kind of afterheat generating system - Google Patents
A kind of afterheat generating system Download PDFInfo
- Publication number
- CN108661734A CN108661734A CN201710201021.3A CN201710201021A CN108661734A CN 108661734 A CN108661734 A CN 108661734A CN 201710201021 A CN201710201021 A CN 201710201021A CN 108661734 A CN108661734 A CN 108661734A
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- Prior art keywords
- rankine cycle
- chopped
- head
- heat source
- tube side
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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
- 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
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of afterheat generating systems, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head Rankine cycle and secondary Rankine cycle composition, high temperature heat source logistics circulating pump is connected to chopped-off head Rankine cycle, low-temperature heat source logistics circulating pump is connected to secondary Rankine cycle, chopped-off head Rankine cycle is connected to secondary Rankine cycle, efficiency of energy utilization is high, and installation area is small.
Description
Technical field
The present invention relates to complementary energy residual heat resources field of comprehensive utilization, more particularly to utilize a kind of waste heat of oil-refining chemical industry
Electricity generation system.
Background technology
Important link of the oil plant as Petroleum Industry chain, scale is increasing, most refineries such as catalysis plus hydrogen, reformation
Reactor in core apparatus, heat exchanger, compressor can all generate a large amount of low temperature exhaust heats.Oil plant low temperature exhaust heat have quantity it is more, kind
The feature that class is more, potential temperature is different.The low temperature exhaust heat of a large amount of separate sources removes outside partial devices heat, often still there is largely mistake
Surplus, but device cools down for general setting cooling island or direct water-cooling.Residual heat resources waste in this way, lead to whole device using energy source
Rate reduces.
Invention content
For the feature that oil-refining chemical industry waste heat type is more, potential temperature is different, a kind of afterheat generating system is invented.Pass through two
Different potential temperatures, different type residual heat resources are separately recovered in grade rankine cycle electricity generation system.A kind of Heat Exchangers are utilized simultaneously
Chopped-off head Rankine cycle is connected with secondary Rankine cycle, equipment occupation of land can be reduced and residual heat resources efficiently utilize.
A kind of afterheat generating system of the present invention, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head are bright
Agree cycle and secondary Rankine cycle form, it is characterised in that：High temperature heat source logistics circulating pump is connected to chopped-off head Rankine cycle, low temperature
Heat source logistics circulating pump is connected to secondary Rankine cycle, and chopped-off head Rankine cycle is connected to secondary Rankine cycle.
A kind of afterheat generating system, it is characterised in that：Chopped-off head Rankine cycle is by high temperature heat source, evaporator, chopped-off head
Expanding machine, Heat Exchangers and chopped-off head working medium circulating pump composition, secondary Rankine cycle by low-temperature heat source, Heat Exchangers,
Secondary expansion machine, secondary working medium circulating pump, condenser composition, chopped-off head Rankine cycle and secondary Rankine cycle share multiple flow heat exchange
Device, chopped-off head expanding machine and secondary expansion machine work done power generation.
A kind of afterheat generating system, it is characterised in that：In high temperature heat source logistics circulating pump and chopped-off head Rankine cycle
Chopped-off head working medium circulating pump connection, low-temperature heat source logistics circulating pump with secondary Rankine cycle secondary working medium circulating pump be connected to.
A kind of afterheat generating system, it is characterised in that：The Heat Exchangers are Heat Exchangers, are to twine
Wound heat exchanger.
A kind of afterheat generating system, it is characterised in that：The Heat Exchangers, a kind of fluid by shell side,
Two kinds of fluids pass through tube side respectively.
A kind of afterheat generating system, it is characterised in that：The Heat Exchangers, heat exchanger tube pass are inverse along shell side
There are superheat section, evaporator section, preheating section in stream direction.
A kind of afterheat generating system, it is characterised in that：The Heat Exchangers, tube side fluid high temperature fluid
Pass through Heat Exchangers tube side superheat section and evaporator section.Cryogen is preheated by Heat Exchangers tube side in tube side fluid
Section.
A kind of afterheat generating system, it is characterised in that：The Heat Exchangers, tube side fluid high temperature fluid
By Heat Exchangers tube side superheat section and preheating section, cryogen is evaporated by Heat Exchangers tube side in tube side fluid
Section.
A kind of afterheat generating system, it is characterised in that：The Heat Exchangers, tube side fluid high temperature fluid
By Heat Exchangers tube side superheat section, cryogen passes through Heat Exchangers tube side evaporator section and preheating in tube side fluid
Section.
A kind of afterheat generating system, it is characterised in that：The high temperature heat source and low-temperature heat source medium are at least work
One kind of process stream, conduction oil, water, steam or flue gas.
A kind of afterheat generating system, it is characterised in that：The working medium of the chopped-off head Rankine cycle is water.
A kind of afterheat generating system, it is characterised in that：The working medium of the secondary Rankine cycle is refrigerant, alkene
Class, ammonia or carbon dioxide are a kind of.
A kind of afterheat generating system flow is as follows：High temperature heat source logistics 12 from high temperature heat source 10 is through high temperature heat source logistics
Circulating pump 8 is sent into evaporator 2 after boosting and is used as heat source.It is high that chopped-off head working medium from chopped-off head working medium circulating pump 1 enters evaporator 2
12 heating evaporation of temperature-heat-source logistics.Then working substance steam enters 3 expansion work of chopped-off head expanding machine, and generator is driven to generate electricity
Energy.Enter Heat Exchangers 4 from the working substance steam of chopped-off head expander outlet 3 and be used as secondary cycles heat source, and is condensed into work
Matter liquid, then continued cycling through after being boosted by high temperature heat source logistics circulating pump 8, complete chopped-off head Lucent cycle.Wherein expanded in chopped-off head
Machine inlet and outlet set working medium bypass, when heat source logistics heat is excessive, open working medium bypass.
Low-temperature heat source logistics 13 from low-temperature heat source 11 is sent into multiple flow after the boosting of low-temperature heat source logistics circulating pump 9 and is changed
Hot device 4 is used as heat source.Secondary working medium from secondary working medium circulating pump 7 enters Heat Exchangers 4 by low-temperature heat source logistics 13
With chopped-off head working substance steam heating evaporation.Then working substance steam enters 5 expansion work of secondary expansion machine, and generator is driven to generate electricity
Energy.The working substance steam exported from secondary expansion machine 5 enters condenser 6 and is condensed into worker quality liquid, then is followed by low-temperature heat source logistics
It is continued cycling through after 7 boosting of ring pump, completes secondary Lucent cycle.Working medium bypass wherein is set in secondary expansion machine inlet and outlet, works as heat source
When logistics heat is excessive, working medium bypass is opened.
Heat Exchangers tube side flow scheme includes：1) tube side fluid high temperature fluid passes through Heat Exchangers tube side
Superheat section and evaporator section, cryogen passes through Heat Exchangers tube side preheating section in tube side fluid；2) tube side fluid high temperature
Fluid is by Heat Exchangers tube side superheat section and preheating section, and cryogen passes through Heat Exchangers tube side in tube side fluid
Evaporator section；3) tube side fluid high temperature fluid is by Heat Exchangers tube side superheat section, and cryogen passes through in tube side fluid
Heat Exchangers tube side evaporator section and preheating section.The high temperature heat source and low-temperature heat source medium can be process-stream, heat conduction
Oil, water, steam or flue gas.
The chopped-off head Rankine cycle working medium is water.
The secondary Rankine cycle working medium is refrigerant, olefines, ammonia or carbon dioxide.
Compared with prior art, a kind of afterheat generating system of the present invention has the following advantages：
The different potential temperature waste heats of height are utilized respectively, efficiency of energy utilization is improved.
Using Heat Exchangers, reduce installation area.
Description of the drawings
Fig. 1 is a kind of afterheat generating system flow chart
Fig. 2 is a kind of one of afterheat generating system Heat Exchangers tube side flow
Fig. 3 is the two of a kind of afterheat generating system Heat Exchangers tube side flow
Fig. 4 is the three of a kind of afterheat generating system Heat Exchangers tube side flow
Wherein "
1. chopped-off head working medium circulating pump, 2. evaporators, 3. chopped-off head expanding machines, 4. Heat Exchangers, 5. secondary expansion machines, 6.
Condenser, 7. grade working medium circulating pumps, 8. high temperature heat source logistics circulating pumps, 9. low-temperature heat source logistics circulating pumps, 10. high warms
Source, 11. low-temperature heat sources, 12. high temperature heat source logistics, 13. low-temperature heat source logistics, 21. shell-side outlets, 22. shell side imports, 23, pipe
Journey high temperature substrate flows into mouth, 24. tube side high temperature stream outlets, 25. tube side low temperature logistics imports, the outlet of 26. tube side low temperature logistics.
Specific implementation mode
Illustrate the present invention with specific embodiment below, but does not limit the scope of the invention.
Embodiment 1
A kind of afterheat generating system, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head Rankine cycle and
Secondary Rankine cycle composition, high temperature heat source logistics circulating pump be connected tos with chopped-off head Rankine cycle, low-temperature heat source logistics circulating pump and secondary
Grade Rankine cycle connection, chopped-off head Rankine cycle with secondary Rankine cycle be connected to, chopped-off head Rankine cycle by high temperature heat source, evaporator,
Chopped-off head expanding machine, Heat Exchangers and chopped-off head working medium circulating pump composition, secondary Rankine cycle are exchanged heat by low-temperature heat source, multiple flow
Device, secondary expansion machine, secondary working medium circulating pump, condenser composition, chopped-off head Rankine cycle and secondary Rankine cycle share multiple flow
Heat exchanger, chopped-off head expanding machine and secondary expansion machine work done power generation, high temperature heat source logistics circulating pump and the head in chopped-off head Rankine cycle
Grade working medium circulating pump connection, low-temperature heat source logistics circulating pump are connected to the secondary working medium circulating pump of secondary Rankine cycle, multiple flow
Heat exchanger is Heat Exchangers, is wound around formula heat exchanger, and by shell side, two kinds of fluids change respectively by tube side for a kind of fluid
It is water that hot device tube side has superheat section, evaporator section, preheating section, high temperature heat source and low-temperature heat source medium along shell side countercurrent direction.
Embodiment 2
A kind of afterheat generating system, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head Rankine cycle and
Secondary Rankine cycle composition, high temperature heat source logistics circulating pump be connected tos with chopped-off head Rankine cycle, low-temperature heat source logistics circulating pump and secondary
Grade Rankine cycle connection, chopped-off head Rankine cycle with secondary Rankine cycle be connected to, chopped-off head Rankine cycle by high temperature heat source, evaporator,
Chopped-off head expanding machine, Heat Exchangers and chopped-off head working medium circulating pump composition, secondary Rankine cycle are exchanged heat by low-temperature heat source, multiple flow
Device, secondary expansion machine, secondary working medium circulating pump, condenser composition, chopped-off head Rankine cycle and secondary Rankine cycle share multiple flow
Heat exchanger, chopped-off head expanding machine and secondary expansion machine work done power generation, high temperature heat source logistics circulating pump and the head in chopped-off head Rankine cycle
Grade working medium circulating pump connection, low-temperature heat source logistics circulating pump are connected to the secondary working medium circulating pump of secondary Rankine cycle, multiple flow
Heat exchanger is Heat Exchangers, is wound around formula heat exchanger, and tube side fluid high temperature fluid passes through Heat Exchangers tube side mistake
Hot arc and evaporator section, in tube side fluid cryogen by Heat Exchangers tube side preheating section, high temperature heat source medium is water,
Low-temperature heat source medium is conduction oil.
Embodiment 3
A kind of afterheat generating system, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head Rankine cycle and
Secondary Rankine cycle composition, high temperature heat source logistics circulating pump be connected tos with chopped-off head Rankine cycle, low-temperature heat source logistics circulating pump and secondary
Grade Rankine cycle connection, chopped-off head Rankine cycle with secondary Rankine cycle be connected to, chopped-off head Rankine cycle by high temperature heat source, evaporator,
Chopped-off head expanding machine, Heat Exchangers and chopped-off head working medium circulating pump composition, secondary Rankine cycle are exchanged heat by low-temperature heat source, multiple flow
Device, secondary expansion machine, secondary working medium circulating pump, condenser composition, chopped-off head Rankine cycle and secondary Rankine cycle share multiple flow
Heat exchanger, chopped-off head expanding machine and secondary expansion machine work done power generation, high temperature heat source logistics circulating pump and the head in chopped-off head Rankine cycle
Grade working medium circulating pump connection, low-temperature heat source logistics circulating pump are connected to the secondary working medium circulating pump of secondary Rankine cycle, multiple flow
Heat exchanger is Heat Exchangers, is wound around formula heat exchanger, and by shell side, two kinds of fluids pass through tube side, pipe respectively for a kind of fluid
Cheng Liuti high temperatures fluid is by Heat Exchangers tube side superheat section and preheating section, and cryogen passes through multiply in tube side fluid
Heat exchanger tube pass evaporator section, high temperature heat source process-stream are flowed, low-temperature heat source medium is process-stream.
Embodiment 4
A kind of afterheat generating system, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head Rankine cycle and
Secondary Rankine cycle composition, high temperature heat source logistics circulating pump be connected tos with chopped-off head Rankine cycle, low-temperature heat source logistics circulating pump and secondary
Grade Rankine cycle connection, chopped-off head Rankine cycle with secondary Rankine cycle be connected to, chopped-off head Rankine cycle by high temperature heat source, evaporator,
Chopped-off head expanding machine, Heat Exchangers and chopped-off head working medium circulating pump composition, secondary Rankine cycle are exchanged heat by low-temperature heat source, multiple flow
Device, secondary expansion machine, secondary working medium circulating pump, condenser composition, chopped-off head Rankine cycle and secondary Rankine cycle share multiple flow
Heat exchanger, chopped-off head expanding machine and secondary expansion machine work done power generation, high temperature heat source logistics circulating pump and the head in chopped-off head Rankine cycle
Grade working medium circulating pump connection, low-temperature heat source logistics circulating pump are connected to the secondary working medium circulating pump of secondary Rankine cycle, multiple flow
Heat exchanger is Heat Exchangers, is wound around formula heat exchanger, and by shell side, two kinds of fluids pass through tube side, pipe respectively for a kind of fluid
Cheng Liuti high temperatures fluid is by Heat Exchangers tube side superheat section, and cryogen passes through Heat Exchangers in tube side fluid
Tube side evaporator section and preheating section, high temperature heat source medium are steam, and low-temperature heat source medium is water.
Embodiment 5
A kind of afterheat generating system, with embodiment 1, the difference is that：High temperature heat source medium is flue gas, and low-temperature heat source is situated between
Matter is process-stream.
Embodiment 6
A kind of afterheat generating system, with embodiment 5, the difference is that：High temperature heat source medium is flue gas, and low-temperature heat source is situated between
Matter is water.
Embodiment 7
A kind of afterheat generating system, with embodiment 5, the difference is that：High temperature heat source medium is conduction oil, low-temperature heat source
Medium is flue gas.
Embodiment 8
A kind of afterheat generating system, with embodiment 5, the difference is that：High temperature heat source medium is steam, and low-temperature heat source is situated between
Matter is flue gas.
Claims (11)
1. a kind of afterheat generating system, high temperature heat source logistics circulating pump, low-temperature heat source logistics circulating pump, chopped-off head Rankine cycle and secondary
Grade Rankine cycle composition, it is characterised in that：High temperature heat source logistics circulating pump is connected to chopped-off head Rankine cycle, and low-temperature heat source logistics follows
Ring is pumped to be connected to secondary Rankine cycle, and chopped-off head Rankine cycle is connected to secondary Rankine cycle.
2. according to a kind of afterheat generating system described in claim 1, it is characterised in that：Chopped-off head Rankine cycle by high temperature heat source,
Evaporator, chopped-off head expanding machine, Heat Exchangers and chopped-off head working medium circulating pump composition, secondary Rankine cycle is by low-temperature heat source, more
Stream heat exchanger, secondary expansion machine, secondary working medium circulating pump, condenser composition, chopped-off head Rankine cycle and secondary Rankine cycle are total
With Heat Exchangers, chopped-off head expanding machine and secondary expansion machine work done power generation.
3. according to a kind of afterheat generating system described in claim 1, it is characterised in that：High temperature heat source logistics circulating pump and chopped-off head
Chopped-off head working medium circulating pump connection in Rankine cycle, the secondary working medium circulation of low-temperature heat source logistics circulating pump and secondary Rankine cycle
Pump connection.
4. according to a kind of afterheat generating system described in claim 1, it is characterised in that：The high temperature heat source and low-temperature heat source are situated between
Matter is at least one kind of process-stream, conduction oil, water, steam or flue gas.
5. according to a kind of afterheat generating system described in claim 1, it is characterised in that：The working medium of the chopped-off head Rankine cycle is
The working medium of water, the secondary Rankine cycle is that refrigerant, olefines, ammonia or carbon dioxide are a kind of.
6. according to a kind of afterheat generating system described in claim 2, it is characterised in that：The Heat Exchangers are multiple flow
Heat exchanger is wound around formula heat exchanger.
7. according to a kind of afterheat generating system described in claim 2, it is characterised in that：The Heat Exchangers, Yi Zhongliu
Body passes through tube side respectively by shell side, two kinds of fluids.
8. according to a kind of afterheat generating system described in claim 2, it is characterised in that：The Heat Exchangers, heat exchanger
Tube side has superheat section, evaporator section, preheating section along shell side countercurrent direction.
9. according to a kind of afterheat generating system described in claim 2, it is characterised in that：The Heat Exchangers, tube side stream
Body high temperature fluid is by Heat Exchangers tube side superheat section and evaporator section, and cryogen is changed by multiple flow in tube side fluid
Hot device tube side preheating section.
10. according to a kind of afterheat generating system described in claim 2, it is characterised in that：The Heat Exchangers, tube side stream
Body high temperature fluid is by Heat Exchangers tube side superheat section and preheating section, and cryogen is changed by multiple flow in tube side fluid
Hot device tube side evaporator section.
11. according to a kind of afterheat generating system described in claim 2, it is characterised in that：The Heat Exchangers, tube side stream
Body high temperature fluid is by Heat Exchangers tube side superheat section, and cryogen passes through Heat Exchangers tube side in tube side fluid
Evaporator section and preheating section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201021.3A CN108661734A (en) | 2017-03-30 | 2017-03-30 | A kind of afterheat generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201021.3A CN108661734A (en) | 2017-03-30 | 2017-03-30 | A kind of afterheat generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108661734A true CN108661734A (en) | 2018-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710201021.3A Pending CN108661734A (en) | 2017-03-30 | 2017-03-30 | A kind of afterheat generating system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802185A (en) * | 1972-06-14 | 1974-04-09 | Du Pont | Generation of power using trichlorobenzene in a rankine-cycle engine |
| US4133171A (en) * | 1977-03-07 | 1979-01-09 | Hydragon Corporation | Temperature stratified turbine compressors |
| CN101614139A (en) * | 2009-07-31 | 2009-12-30 | 王世英 | Multicycle power generation thermodynamic system |
| CN104420902A (en) * | 2013-08-19 | 2015-03-18 | 财团法人工业技术研究院 | Heat exchanger with reheating and condensing functions, heat cycle system and method thereof |
-
2017
- 2017-03-30 CN CN201710201021.3A patent/CN108661734A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802185A (en) * | 1972-06-14 | 1974-04-09 | Du Pont | Generation of power using trichlorobenzene in a rankine-cycle engine |
| US4133171A (en) * | 1977-03-07 | 1979-01-09 | Hydragon Corporation | Temperature stratified turbine compressors |
| CN101614139A (en) * | 2009-07-31 | 2009-12-30 | 王世英 | Multicycle power generation thermodynamic system |
| CN104420902A (en) * | 2013-08-19 | 2015-03-18 | 财团法人工业技术研究院 | Heat exchanger with reheating and condensing functions, heat cycle system and method thereof |
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Application publication date: 20181016 |
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