CN107060931A - A kind of working medium self-cooled fume afterheat organic rankine cycle system - Google Patents
A kind of working medium self-cooled fume afterheat organic rankine cycle system Download PDFInfo
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- CN107060931A CN107060931A CN201710508069.9A CN201710508069A CN107060931A CN 107060931 A CN107060931 A CN 107060931A CN 201710508069 A CN201710508069 A CN 201710508069A CN 107060931 A CN107060931 A CN 107060931A
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- Prior art keywords
- working medium
- heat exchanger
- outlet
- ammoniacal liquor
- valve
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- 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.)
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- 239000003517 fume Substances 0.000 title claims abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 54
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 27
- 230000008676 import Effects 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F01K25/106—Ammonia
Abstract
The present invention relates to a kind of working medium self-cooled fume afterheat organic rankine cycle system, belong to smoke waste heat utilization system technical field.The present invention solves the serious technical problem of loss of existing power plant fume afterheat in process of production.The technical scheme is that：A kind of working medium self-cooled fume afterheat organic rankine cycle system, wherein：Including evaporator, gas-liquid separator, expanding machine, generator, working medium from cold heat exchanger, the cold heat-exchange system of ammonia, the second working medium heat-exchange system, cycle fluid reservoir, booster pump, the first valve, the second valve, the 3rd valve and the 4th valve；The cold heat-exchange system of ammonia includes ammonia cold heat exchanger, ammoniacal liquor cooler, ammoniacal liquor reservoir and ammoniacal liquor booster pump；The second working medium heat-exchange system includes the second working fluid heat exchanger, the second working medium cooler, the second working medium reservoir and the second working medium booster pump.The present invention has the advantages that comprehensive utilization ratio is high, saves water resource, operates steadily.
Description
Technical field
The invention belongs to smoke waste heat utilization system technical field, more particularly to a kind of working medium self-cooled fume afterheat has
Machine Rankine cycle system.
Background technology
Being mainly the heat energy that is produced by burn coal and natural gas in China's electric power, to be converted to machinery fertile, but it is sent out
Electrical efficiency is low, in the production process of power plant, and the discharge of flue gas, can take away and exceed after the exhaust steam and fuel combustion after steam turbine acting
The energy of more than half of fuel total content.The net generating efficiency of present state-of-the-art integrated gasification combined cycle for power generation system
Also there was only half less than there is the serious wasting of resources.
Organic Rankine bottoming cycle (Organic Rankine Cycle, abbreviation ORC) generation technology, can be by low grade residual heat
Easy to use, the flexible high-grade electric energy of conveying is converted to, environmental pollution is reduced simultaneously improving energy recovery utilization ratio.By
In its unique advantage and wide market application foreground, have become " energy-saving and emission-reduction " area research hot subject it
One.
The content of the invention
It is an object of the invention to the shortcoming for overcoming prior art, there is provided a kind of working medium self-cooled fume afterheat organic Rankine
The circulatory system, solves the serious technical problem of the loss of existing power plant fume afterheat in process of production.
The present invention is achieved by the following technical solutions：
A kind of working medium self-cooled fume afterheat organic rankine cycle system, wherein：Including evaporator, gas-liquid separator, swollen
Swollen machine, generator, working medium from cold heat exchanger, the cold heat-exchange system of ammonia, the second working medium heat-exchange system, cycle fluid reservoir, supercharging
Pump, the first valve, the second valve, the 3rd valve and the 4th valve；
The cold heat-exchange system of ammonia includes ammonia cold heat exchanger, ammoniacal liquor cooler, ammoniacal liquor reservoir and ammoniacal liquor booster pump；It is described
Second working medium heat-exchange system includes the second working fluid heat exchanger, the second working medium cooler, the second working medium reservoir and the second working medium and increased
Press pump；
The air inlet of the evaporator is connected with low-temperature flue gas, the exhaust outlet and atmosphere of the evaporator；
The evaporator circulatory mediator outlet be connected with the entrance of gas-liquid separator, the outlet of the gas-liquid separator and
The air inlet connection of expanding machine, the expanding machine is connected with generator, the gas outlet of the expanding machine respectively with the first valve and
The import connection of second valve, the outlet of first valve is connected with working medium from the air inlet of cold heat exchanger, and the working medium is certainly
The gas outlet of cold heat exchanger is connected with the import of the second working fluid heat exchanger；The outlet of second valve respectively with ammonia cold heat exchanger
Import and the 3rd valve import connection, the outlet of the ammonia cold heat exchanger is connected with the import of cycle fluid reservoir, institute
The outlet for stating the 3rd valve is connected with the import of the second working fluid heat exchanger；The outlet of second working fluid heat exchanger and cycle fluid
The import connection of reservoir, the outlet of the cycle fluid reservoir and the entrance of booster pump are connected, the outlet of the booster pump
It is connected with working medium from the inlet of cold heat exchanger, the working medium is connected from the liquid outlet of cold heat exchanger with the import of the 4th valve,
The outlet of 4th valve and the circulatory mediator entrance of evaporator are connected；
The ammoniacal liquor delivery port of the ammonia cold heat exchanger is connected with the ammoniacal liquor import of ammoniacal liquor cooler, the ammoniacal liquor cooler
Ammoniacal liquor outlet is connected with the ammoniacal liquor import of ammoniacal liquor reservoir, the ammoniacal liquor outlet of the ammoniacal liquor reservoir and the ammoniacal liquor of ammoniacal liquor booster pump
Import is connected, and the ammoniacal liquor outlet of the ammoniacal liquor booster pump is connected with the ammoniacal liquor import of ammonia cold heat exchanger；
The coolant liquid outlet of second working fluid heat exchanger is connected with the inlet of the second working medium cooler, and described second
The liquid outlet of working medium cooler is connected with the inlet of the second working medium reservoir, the liquid outlet of the second working medium reservoir and
The inlet connection of two working medium booster pumps, the coolant of the liquid outlet and the second working fluid heat exchanger of the second working medium booster pump is entered
Liquid mouthful connection.
Further, the evaporator is four parallel connections plate type heat exchanger arranged in a crossed manner.
The exhaust steam discharged in the present invention after expanding machine acting, is carried out by working medium from cold heat exchanger to liquid organic working medium
Preheating, improves the initial temperature into the organic working medium of evaporator, improves the evaporation rate of working medium, improve low-temperature flue gas waste heat
Utilization rate；Working medium instead of traditional water cooling system from the setting of cold heat exchanger, save substantial amounts of cooling water resources；
The the second working medium heat-exchange system and the cold heat-exchange system of ammonia that can voluntarily switch are as two grades, three-level cooling system, after self cooling
Organic working medium is further cooled down, prevent self cooling not exclusively system is impacted, make from expanding machine come out it is organic
Working medium exhaust steam obtains the enthalpy drop of maximum, reaches that acting ability is maximized；Evaporator selection plate type heat exchanger arranged crosswise in parallel, can
Effectively improve heat exchange efficiency；The setting of vapour liquid separator, can be purified to organic working medium steam, except not steaming completely in devaporation
The organic working medium droplet of hair protects expanding machine blade not frayed.
Compared with prior art, the present invention has the advantages that comprehensive utilization ratio is high, saves water resource, operates steadily.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of working medium self-cooled fume afterheat organic rankine cycle system, wherein：Including evaporator 1, gas
Liquid/gas separator 2, expanding machine 3, generator 4, working medium from cold heat exchanger 5, the cold heat-exchange system 6 of ammonia, the second working medium heat-exchange system 7, follow
Ring working medium reservoir 8, booster pump 9, the first valve 10, the second valve 11, the 3rd valve 12 and the 4th valve 13；
The cold heat-exchange system 6 of ammonia includes ammonia cold heat exchanger 6-1, ammoniacal liquor cooler 6-2, ammoniacal liquor reservoir 6-3 and ammoniacal liquor
Booster pump 6-4；The second working medium heat-exchange system 7 includes the second working fluid heat exchanger 7-1, the second working medium cooler 7-2, the second work
Matter reservoir 7-3 and the second working medium booster pump 7-4；
The air inlet of the evaporator 1 is connected with low-temperature flue gas, the exhaust outlet and atmosphere of the evaporator 1；
The circulatory mediator outlet of the evaporator 1 is connected with the entrance of gas-liquid separator 2, and the gas-liquid separator 2 goes out
Mouthful it is connected with the air inlet of expanding machine 3, the expanding machine 3 is connected with generator 4, the gas outlet of the expanding machine 3 is respectively with the
The import connection of one valve 10 and the second valve 11, the air inlet of the outlet of first valve 10 and working medium from cold heat exchanger 5
Connection, the working medium is connected from the gas outlet of cold heat exchanger 5 with the second working fluid heat exchanger 7-1 import；Second valve 11
Outlet be connected respectively with ammonia cold heat exchanger 6-1 import and the import of the 3rd valve 12, the outlet of the ammonia cold heat exchanger 6-1
Import with cycle fluid reservoir 8 is connected, and the outlet of the 3rd valve 12 connects with the second working fluid heat exchanger 7-1 import
Connect；The outlet of the second working fluid heat exchanger 7-1 is connected with the import of cycle fluid reservoir 8, the cycle fluid reservoir 8
Outlet be connected with the entrance of booster pump 9, the outlet of the booster pump 9 is connected with working medium from the inlet of cold heat exchanger 5, described
Working medium is connected from the liquid outlet of cold heat exchanger 5 with the import of the 4th valve 13, outlet and the evaporator 1 of the 4th valve 13
Circulatory mediator entrance is connected；
The ammoniacal liquor outlet of the ammonia cold heat exchanger 6-1 is connected with ammoniacal liquor cooler 6-2 ammoniacal liquor import, the ammoniacal liquor cooling
Device 6-2 ammoniacal liquor outlet is connected with ammoniacal liquor reservoir 6-3 ammoniacal liquor import, the ammoniacal liquor outlet of the ammoniacal liquor reservoir 6-3 and ammonia
Water booster pump 6-4 ammoniacal liquor import connection, the ammoniacal liquor outlet of the ammoniacal liquor booster pump 6-4 and ammonia cold heat exchanger 6-1 ammoniacal liquor enter
Mouth connection；
The coolant liquid outlet of the second working fluid heat exchanger 7-1 is connected with the second working medium cooler 7-2 inlet, institute
The liquid outlet for stating the second working medium cooler 7-2 is connected with the second working medium reservoir 7-3 inlet, the second working medium reservoir
7-3 liquid outlet is connected with the second working medium booster pump 7-4 inlet, the liquid outlet of the second working medium booster pump 7-4 and
Two working fluid heat exchanger 7-1 coolant inlet connection.
Further, the evaporator 1 is four parallel connections plate type heat exchanger arranged in a crossed manner.
The course of work and principle of the present invention：
During normal work, the second valve 11 and the 3rd valve 12 are closed, and the first valve 10 and the 4th valve 13 are opened, circulation
Organic working medium in working medium reservoir 8, enters working medium from cold heat exchanger 8 in the presence of booster pump 9, in working medium from cold heat exchanger
The waste heat that organic working medium exhaust steam is absorbed in 8 is once preheated, and enters evaporator 1 after the completion of once preheating, from four friendships in parallel
The overheat organic steam for the heat formation certain pressure that low-temperature flue gas is absorbed in the plate type heat exchanger set is pitched, through gas-liquid separator
Enter expansion work in expanding machine 3 after the droplet that 2 separation are not completely vaporized, convert thermal energy into mechanical energy and drive generator 4
Rotate and produce electric energy；The organic working medium exhaust steam discharged from expanding machine 3 is entered by working medium from cold heat exchanger 8 and liquid organic working medium
Row heat exchange carries out first time cooling, and the organic working medium after cooling enters the second working fluid heat exchanger 7-1 and the second organic working medium is carried out
Heat exchange, is circulated next time after the completion of heat exchange into cycle fluid reservoir 8；
When working medium is overhauled or is out of order from cold heat exchanger 8, the first valve 10 is closed, while opening the second valve 11, the
Three valves 12 and the 4th valve 13, the organic working medium exhaust steam discharged from expanding machine 3 respectively enter ammonia cold heat exchanger 6-1 and second
Working fluid heat exchanger 7-1 is cooled down, and is circulated next time into cycle fluid reservoir 8 after cooling；
When working medium is overhauled or is out of order from the working medium heat-exchange system 7 of cold heat exchanger 8 and second, the first valve 10 and the are closed
Three valves 12, the organic working medium exhaust steam discharged from expanding machine 3 is directly entered ammonia cold heat exchanger 6-1 and cooled down, and cools down laggard
Enter cycle fluid reservoir 8 to be circulated next time.
The present invention can be embodied without departing from the spiritual or substantive of invention in a variety of forms, it should therefore be appreciated that on
State embodiment and be not limited to foregoing details, and should widely be explained in claim limited range, therefore fall into right
It is required that or the change in its equivalent scope and remodeling all should be claim and covered.
Claims (2)
1. a kind of working medium self-cooled fume afterheat organic rankine cycle system, it is characterised in that：Including evaporator (1), gas-liquid point
It is from cold heat exchanger (5), the cold heat-exchange system of ammonia (6), the heat exchange of the second working medium from device (2), expanding machine (3), generator (4), working medium
Unite (7), cycle fluid reservoir (8), booster pump (9), the first valve (10), the second valve (11), the 3rd valve (12) and the
Four valves (13)；
The cold heat-exchange system of ammonia (6) include ammonia cold heat exchanger (6-1), ammoniacal liquor cooler (6-2), ammoniacal liquor reservoir (6-3) and
Ammoniacal liquor booster pump (6-4)；The second working medium heat-exchange system (7) includes the second working fluid heat exchanger (7-1), the second working medium cooler
(7-2), the second working medium reservoir (7-3) and the second working medium booster pump (7-4)；
The air inlet of the evaporator (1) is connected with low-temperature flue gas, the exhaust outlet and atmosphere of the evaporator (1)；
The circulatory mediator outlet of the evaporator (1) is connected with the entrance of gas-liquid separator (2), the gas-liquid separator (2)
Outlet is connected with the air inlet of expanding machine (3), and the expanding machine (3) is connected with generator (4), the outlet of the expanding machine (3)
Import of the mouth respectively with the first valve (10) and the second valve (11) is connected, and the outlet of first valve (10) and working medium are self cooling
The air inlet connection of heat exchanger (5), the working medium is entered from the gas outlet of cold heat exchanger (5) and the second working fluid heat exchanger (7-1's)
Mouth connection；The import and the import of the 3rd valve (12) of the outlet of second valve (11) respectively with ammonia cold heat exchanger (6-1)
Connection, the outlet of the ammonia cold heat exchanger (6-1) is connected with the import of cycle fluid reservoir (8), the 3rd valve (12)
Outlet be connected with the import of the second working fluid heat exchanger (7-1)；The outlet of second working fluid heat exchanger (7-1) and cycle fluid
The import connection of reservoir (8), the outlet of the cycle fluid reservoir (8) is connected with the entrance of booster pump (9), the supercharging
The outlet of pump (9) is connected with working medium from the inlet of cold heat exchanger (5), and the working medium is from the liquid outlet of cold heat exchanger (5) and
The import connection of four valves (13), the outlet of the 4th valve (13) is connected with the circulatory mediator entrance of evaporator (1)；
The ammoniacal liquor outlet of the ammonia cold heat exchanger (6-1) is connected with the ammoniacal liquor import of ammoniacal liquor cooler (6-2), the ammoniacal liquor cooling
The ammoniacal liquor outlet of device (6-2) is connected with the ammoniacal liquor import of ammoniacal liquor reservoir (6-3), and the ammoniacal liquor of the ammoniacal liquor reservoir (6-3) goes out
Mouth is connected with the ammoniacal liquor import of ammoniacal liquor booster pump (6-4), ammoniacal liquor outlet and the ammonia cold heat exchanger of the ammoniacal liquor booster pump (6-4)
The ammoniacal liquor import connection of (6-1)；
The coolant liquid outlet of second working fluid heat exchanger (7-1) is connected with the inlet of the second working medium cooler (7-2), institute
The liquid outlet for stating the second working medium cooler (7-2) is connected with the inlet of the second working medium reservoir (7-3), the second working medium storage
The liquid outlet of liquid device (7-3) is connected with the inlet of the second working medium booster pump (7-4), the second working medium booster pump (7-4)
Liquid outlet is connected with the coolant inlet of the second working fluid heat exchanger (7-1).
2. a kind of working medium self-cooled fume afterheat organic rankine cycle system according to claim 1, it is characterised in that：Institute
It is four parallel connections plate type heat exchanger arranged in a crossed manner to state evaporator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508069.9A CN107060931A (en) | 2017-06-28 | 2017-06-28 | A kind of working medium self-cooled fume afterheat organic rankine cycle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508069.9A CN107060931A (en) | 2017-06-28 | 2017-06-28 | A kind of working medium self-cooled fume afterheat organic rankine cycle system |
Publications (1)
| Publication Number | Publication Date |
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| CN107060931A true CN107060931A (en) | 2017-08-18 |
Family
ID=59613549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508069.9A Pending CN107060931A (en) | 2017-06-28 | 2017-06-28 | A kind of working medium self-cooled fume afterheat organic rankine cycle system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107060931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701252A (en) * | 2017-11-10 | 2018-02-16 | 山西大学 | ORC intelligence working medium blenders and its control method |
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