CN108561230A - Off-gas recovery water-saving system - Google Patents
Off-gas recovery water-saving system Download PDFInfo
- Publication number
- CN108561230A CN108561230A CN201711492767.0A CN201711492767A CN108561230A CN 108561230 A CN108561230 A CN 108561230A CN 201711492767 A CN201711492767 A CN 201711492767A CN 108561230 A CN108561230 A CN 108561230A
- Authority
- CN
- China
- Prior art keywords
- water
- heat exchanger
- connect
- gas
- waste heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- 239000007789 gas Substances 0.000 claims abstract description 60
- 239000002918 waste heat Substances 0.000 claims abstract description 40
- 238000007599 discharging Methods 0.000 claims abstract description 34
- 239000000779 smoke Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000012806 monitoring device Methods 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 54
- 239000003546 flue gas Substances 0.000 abstract description 54
- 238000000034 method Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
-
- 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
- F01K23/06—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 combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—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 combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of off-gas recovery water-saving systems, including：The waste heat boiler and gas turbine unit being connect respectively with waste heat boiler, steam turbine unit and heat-exchange unit, the heat-exchange unit includes the heat exchanger being connect with waste heat boiler, the water tank being connected to set on exchanger base and with heat exchanger, the draining branch being connect with water tank, water discharging valve set on draining branch road, and the chimney that is connect with heat exchanger.While present embodiment ensures to collect condensed water, heat exchange efficiency is high, and the temperature of flue gas reaches aqueous dew point temperature or less and is then exhausted from, and while improving utilization rate of waste heat, the flue-gas temperature of discharge is lower, and to more environment-friendly, integrated combination cycle actual thermal efficiency is high.
Description
Technical field
The present invention relates to technical field of electric power, more particularly, to a kind of off-gas recovery water-saving system.
Background technology
Traditional off-gas recovery water-saving system is to set flue gas emission chimney to spray column and the integrated equipment of chimney,
In the spray column of front end flue-gas temperature recycle-water is reduced with the tail flue gas mixed heat transfer entered after boiler combustion using water spray
The gasification latent heat and aqueous medium of steam.Since traditional off-gas recovery water-saving system is the mixing heat-exchange of flue gas and water, for
Fume side heat exchange resistance is very big, if as the recycling mode in combined-cycle power plant's tail flue gas, can significantly drop
The acting ability and efficiency of low burn gas-turbine, more so that chimney can not be discharged in tail flue gas, or even can not be smooth in spray column
Ground fluid interchange from bottom to top leads to not cooling and the waste heat deep exploitation of realizing tail flue gas.Draw if increasing on flue
Wind turbine, since the resistance that must pull against is very big, then increased air inducing electric power will be very big, lead to power plant's consumable power
Larger, integrated combination cycle actual thermal efficiency reduces.
Invention content
Based on this, the invention reside in the off-gas recovery water-saving system integrated combination cycle actual thermal efficiency for overcoming the prior art
The defect of reduction provides a kind of off-gas recovery water-saving system.
Its technical solution is as follows：
A kind of off-gas recovery water-saving system, including：Waste heat boiler and the gas turbine machine being connect respectively with waste heat boiler
Group, steam turbine unit and heat-exchange unit, the heat-exchange unit include the heat exchanger being connect with waste heat boiler, are set to heat exchanger bottom
Portion and the water tank being connected to heat exchanger, the draining branch being connect with water tank are set to the water discharging valve of draining branch road, and with change
The chimney of hot device connection.
At runtime, air enters gas turbine unit burning and generates flue gas the off-gas recovery water-saving system of the technical program
Acting power generation, the high temperature lack of gas after flue gas has done work enter waste heat boiler.Under being condensed in the steam turbine Unit Steam Water circulatory system
The condensed water come is delivered in waste heat boiler, is heated by the high temperature lack of gas that gas turbine unit acting is completed, is become high temperature and pressure
Steam returns power generation of doing work in steam turbine unit.High temperature lack of gas in waste heat boiler are by the complete heel row of steam turbine set heat exchange
Put into heat exchanger, flue gas is in heat exchanger by low temperature desalination water cooling so that the temperature of flue gas reach aqueous dew point temperature hereinafter,
Condensation is precipitated in moisture completely from flue gas at this time, flows into the water tank for collecting condensed water.On the one hand, the low temperature in heat exchanger
Demineralized water is increased by temperature after flue gas, for being used with heat user；On the other hand, after the cooled all moisture of precipitation of flue gas
Become dry flue gas, by chimney to air discharge.The flue gas condensed being collected into water tank is born water according to the demand of user, passes through drain valve
Door discharge utilizes.The technical program is not necessarily to carry out heat exchange and moisture collection by spray column, and heat exchange resistance is small, and the technical program
Heat exchange efficiency is high, and the temperature of flue gas reaches aqueous dew point temperature or less and is then exhausted from, while improving utilization rate of waste heat, the cigarette of discharge
Temperature degree is lower, and to more environment-friendly, integrated combination cycle actual thermal efficiency is high.
The heat exchanger is connect by chimney with the waste heat boiler in one of the embodiments, and the chimney packet
It includes by the first cavity and the second cavity of barrier partitions to be opened/closed, first cavity wall is equipped with to be connected to the first cavity
First smoke inlet and the first outlet flue, second cavity wall are equipped with the second smoke inlet and second being connected to the second cavity and go out
Mouth, first smoke inlet are connect with the waste heat boiler, and first outlet flue is connect with the air inlet of the heat exchanger,
And the first control valve is equipped between first outlet flue and the air inlet；Second smoke inlet and the heat exchanger
Gas outlet connects, second outlet flue and atmosphere.
Air inducing is equipped between first control valve and the air inlet of the heat exchanger in one of the embodiments,
Machine.
The second regulating valve is equipped between the air-introduced machine and the air inlet of the heat exchanger in one of the embodiments,
Door.
The waste heat boiler is connect by the first branch with the air inlet of the heat exchanger in one of the embodiments,
The gas outlet of the heat exchanger is connect with the chimney；The waste heat boiler is connect by the second branch with the chimney, and institute
It states the second branch and is equipped with third control valve.
The first branch is equipped with air-introduced machine, and the air-introduced machine and the waste heat pot in one of the embodiments,
The 4th control valve is equipped between stove.
The 5th control valve is equipped between the gas outlet of the heat exchanger and the chimney in one of the embodiments,.
Further include the liquid level emasuring device for monitoring liquid level in water tank, Yi Jiyong in one of the embodiments,
In the water monitoring device of water quality in monitoring water tank.
The draining branch includes the first draining branch, the second draining branch and third row in one of the embodiments,
Water branch, the water discharging valve include the first water discharging valve, the second water discharging valve and third water discharging valve, first drain valve
Door, the second water discharging valve and third water discharging valve are respectively arranged on the first draining branch, the second draining branch and third draining branch
On.
Water treatment facilities, and first draining are additionally provided on the first draining branch in one of the embodiments,
Valve is between the water treatment facilities and the water tank.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment one of the off-gas recovery water-saving system of the present invention；
Fig. 2 is the schematic diagram of the embodiment two of the off-gas recovery water-saving system of the present invention.
Reference sign：
10, waste heat boiler；20, gas turbine unit；21, compressor；22, combustion chamber；23, turbine；30, steam turbine machine
Group；31, steam turbine；32, condenser；33, condensate pump；40, heat-exchange unit；41, heat exchanger；411, air inlet；412, go out
Gas port；42, water tank；43, branch is drained；431, the first draining branch；432, the second draining branch；433, third drains branch；
44, water discharging valve；441, the first water discharging valve；442, the second water discharging valve；443, third water discharging valve；45, chimney；451, it keeps off
Plate；452, the first cavity；453, the second cavity；454, the first smoke inlet；455, the first outlet flue；456, the second smoke inlet；
457, the second outlet flue；458, thermal walking expansion joint；51, the first control valve；52, the second control valve；53, third regulating valve
Door；54, the 4th control valve；55, the 5th control valve；60, air-introduced machine；70, liquid level emasuring device；80, water monitoring device；
90, water treatment facilities；100, delivery pump；111, the first branch；112, the second branch.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only solving
The present invention is released, protection scope of the present invention is not limited.
Embodiment one
A kind of off-gas recovery water-saving system as shown in Figure 1, including：Waste heat boiler 10 and respectively with waste heat boiler 10 connect
Gas turbine unit 20, steam turbine unit 30 and the heat-exchange unit 40 connect, the heat-exchange unit 40 include and waste heat boiler 10
The heat exchanger 41 of connection, the water tank 42 for being set to 41 bottom of heat exchanger and being connected to heat exchanger 41, the draining branch being connect with water tank 42
Road 43 is set to the water discharging valve 44 drained on branch 43, and the chimney 45 being connect with heat exchanger 41.
In present embodiment, the gas turbine unit 20 includes sequentially connected compressor 21, combustion chamber 22 and turbine
23, when off-gas recovery water-saving system at runtime, air enters the compression of compressor 21, and compressed air enters back into combustion chamber 22
The acting power generation of turbine 23, the high temperature lack of gas after flue gas has done work is pushed to enter waste heat pot with the flue gas of one combust of fuel, generation
Stove 10.The steam turbine unit 30 includes steam turbine 31, condenser 32 and condensate pump 33, and high temperature and high pressure steam enters steaming
Steam turbine 31 does work, and energy transmission forms lack of gas to electrical power generators, after the completion of steam acting and enters condenser 32, by solidifying
Circulating cooling water cooling lack of gas in vapour device 32 are condensed water, and condensed water is delivered to quilt in waste heat boiler 10 by condensate pump 33
Gas turbine unit 20 do work after the completion of the heating of high temperature lack of gas, become high temperature and high pressure steam and return to do work in steam turbine 31
Power generation.
High temperature lack of gas in waste heat boiler 10 are emitted into after having been exchanged heat by steam turbine unit 20 in heat exchanger 41, and flue gas exists
By the low temperature desalination water cooling in heat exchanger 41 in heat exchanger 41 so that the temperature of flue gas reaches aqueous dew point temperature hereinafter, at this time
Condensation is precipitated in moisture completely from flue gas, flows into the water tank 42 for collecting condensed water.On the one hand, the low temperature in heat exchanger 41
Demineralized water is increased by temperature after flue gas, for being used with heat user；On the other hand, after the cooled all moisture of precipitation of flue gas
Become dry flue gas, by chimney to air discharge.The flue gas condensed being collected into water tank 42 is born water according to the demand of user, passes through draining
The discharge of valve 44 utilizes.Present embodiment is not necessarily to carry out heat exchange and moisture collection by spray column, and heat exchange resistance is small, and this implementation
While mode ensures to collect condensed water, heat exchange efficiency is high, and the temperature of flue gas reaches aqueous dew point temperature or less and is then exhausted from, improves
While utilization rate of waste heat, the flue-gas temperature of discharge is lower, and to more environment-friendly, integrated combination cycle actual thermal efficiency is high.
The heat exchanger 41 is connect by chimney 45 with the waste heat boiler 10, and the chimney 45 includes to be opened/closed
The first cavity 452 and the second cavity 453 that baffle 451 separates, wherein the first cavity 452 is high temperature section, the second cavity 453 is low
Temperature section.First cavity, 452 wall is equipped with the first smoke inlet 454 and the first outlet flue 455 being connected to the first cavity 452,
Second cavity, 453 wall is equipped with the second smoke inlet 456 and the second outlet flue 457 that are connected to the second cavity 453, and described the
One smoke inlet 454 is connect with the waste heat boiler 10, receives the flue gas being discharged in the waste heat boiler 10；First outlet flue
455 connect with the air inlet 411 of the heat exchanger 41, and the is equipped between first outlet flue 455 and the air inlet 411
One control valve 51；The flue gas being discharged in waste heat boiler 10 is delivered to after the first cavity 452 in heat exchanger 41；Described second
Smoke inlet 456 is connect with the gas outlet 412 of the heat exchanger 41, and the flue gas after the heat exchange of heat exchanger 41 is delivered to the second chamber
In body 453, then drained into air by the second outlet flue 457 with atmosphere, flue gas is by heat exchanger 41 at this time
Low temperature demineralized water exchanges heat, and flue-gas temperature is reduced to aqueous dew point temperature hereinafter, moisture precipitation condensation completely from flue gas at this time, falls into
It is collected in water tank 42, and opening and closing water discharging valve 44 is needed according to user, and after the low temperature demineralized water heat exchange in heat exchanger 41
Become medium temperature demineralized water to supply to using heat user.It is not exchanged heat also when i.e. flue gas flows through the first cavity 452, at this time the first cavity
452 are used as high temperature section, but when flue gas is delivered to the second cavity 453, flue gas has cooled down at this time, and the second cavity 453 is made at this time
For low-temperature zone.
Due to chimney 45 use high temperature section and low-temperature zone integral structure, i.e., flue gas before by UTILIZATION OF VESIDUAL HEAT IN and utilize after all
The same chimney 45 is flowed through, and due to being equipped with baffle 451 to be opened/closed between high temperature section and low-temperature zone, when gas turbine unit 20
When normal heavy-duty service, a whole set of off-gas recovery water-saving system puts into operation, need to close baffle 451, and opens first and adjust
Valve 51, flue gas, which can just pass through whole system and be ultimately discharged into low-temperature zone, is discharged into air, otherwise can flue gas flow through the first chamber
Can be leaked to when body 452 second cavity 453 drain into air and the normal work that influences whole system；Conversely, working as gas turbine
When unit 20 starts or when underrun, 20 back pressure of gas turbine unit is relatively low, and subsequent heat exchange can not be overcome to hinder
Power, flue gas flow is also smaller, and off-gas recovery is uneconomical, and unit operational efficiency itself is had an effect on while consuming energy larger, i.e., a whole set of
Off-gas recovery water-saving system performance driving economy is poor, at this time can be by opening baffle 451 so that the first cavity 452 and second
Cavity 453 is connected to, and simultaneously closes off the first control valve 51, the method for operation of flue gas then as the method for operation of conventional system,
Directly idle discharge is put by chimney 45.The same chimney of present embodiment 45 realizes two different methods of operation, economy
Preferably.
In addition, the low-temperature zone and high temperature section due to chimney 45 have different thermal expansions, if using conventional Hard link,
It will make drawing crack at high/low temperature junction i.e. 451 place of baffle, and lead to smoke spillage, in order to ensure the normal operation of chimney 45,
The flexible connection of thermal walking expansion joint 458 is arranged in high/low temperature junction, and the thermal walking expansion joint 458 absorbs the heat of both ends expansion
Displacement avoids chimney body drawing crack.Also, due to containing acid contaminant in flue gas, there is low-temperature corrosion in equipment in order to prevent,
One layer of corrosion protective covering is additionally at least set in 453 inner wall of the second cavity.
Air-introduced machine is equipped between first control valve 51 and the air inlet 411 of the heat exchanger 41 described in present embodiment
60.The air-introduced machine 60 is speed change rotating machinery, can meet the cigarette under different unit loads by changing rotating speed of transmission shaft
Throughput, the air-introduced machine 60 can be frequency conversion centrifugal blower, Silence Process axial flow blower or axial flow fan with adjustable moving blades.
The second control valve 52 is equipped between the air-introduced machine 60 and the air inlet 411 of the heat exchanger 41.It is i.e. described to draw
Each there are one the valve for adjusting flue gas flow, the first control valve 51 and the cooperations of the second control valve 52 to make for wind turbine 60 front and back
With, for air-introduced machine 60 is assisted under abnormal condition adjusting flue gas circulation flow.Specifically, when the input of heat-exchange unit 40 makes
Used time, 52 standard-sized sheet of the second control valve, first control valve 51 regulate and control opening and closing degree as needed.
It is described in order to reduce itself energy consumption of influence and reduction air-introduced machine 60 of the flue gas resistance to gas turbine unit 20
The heat transferring medium of heat exchanger 41, that is, low temperature demineralized water is flowed in the pipe side of heat exchanger 41, and flue gas is then in the shell of heat exchanger 41
Flowing.Since flue gas contains acid contaminant, there is low-temperature corrosion in heat exchanger 41 in order to prevent, in the shell-side inner wall of heat exchanger 41
It is respectively provided with corrosion protective layer with pipe side outer wall.
Present embodiment further includes the liquid level emasuring device 70 for monitoring liquid level in water tank 42, and for monitoring
The water monitoring device 80 of water quality in water tank, the water monitoring device 80 are PH on-Line Monitor Devices.When water level in water tank 42
When excessively high, water discharging valve 44 is opened, water, which is drained into user side, to be used or for storing or draining into waste water treatment plant's recycling；Work as water
When matter meets the requirements, the water in water tank 42 is drained into user side or for storing, when water quality is poor, then water is expelled to waste water
Treatment plant recycles.
Specifically, it is described draining branch 43 include be connected to high-quality demineralized water user first drain branch 431, with it is general
Second draining branch 432 of water flowing user connection and the third draining branch 433 being connected to waste water treatment plant, the water discharging valve
44 include the first water discharging valve 441, the second water discharging valve 442 and third water discharging valve 443, first water discharging valve 441, the
Two water discharging valves 442 and third water discharging valve 443 are respectively arranged on the first draining branch 431, second draining branch 432 and third row
On water branch 433, corresponding valve is opened, you can so that the water in water tank 42 is drained into different channels and utilized.
In addition, in order to ensure the use water quality of high-quality demineralized water user, it is additionally provided on the first draining branch 431
Water treatment facilities 90, and first water discharging valve 441 is between the water treatment facilities 90 and the water tank 42.It is opening
After first water discharging valve 441, the water in water tank 42 is delivered to water treatment facilities 90 and is chemically treated, and obtains removing for higher quality
Brine is supplied to relative users.In addition, in order to ensure that flow can smoothly enter into water treatment facilities 90 and supply to user, this embodiment party
Formula is equipped with delivery pump 100 between the water treatment facilities 90 and first water discharging valve 441.
Whole system is all the operation of low-temp low-pressure medium, therefore equipment and pipe material heat resisting and pressure resisting require relatively low, cost
Advantage of lower cost, property safe and reliable to operation are high.
Embodiment two
As shown in Fig. 2, the structure and operation principle of the present embodiment are similar to the structure of embodiment one and operation principle, difference
It is, the waste heat boiler 10 of the present embodiment is connect by the first branch 111 with the air inlet 411 of the heat exchanger 41, described to change
The gas outlet 411 of hot device 41 is connect with the smoke inlet of the chimney 45；The waste heat boiler 10 by the second branch 112 with it is described
Chimney connects, and the second branch 112 is equipped with third control valve 53.The present embodiment is strictly according to the facts using routine chimney
The segmentation chimney described in example 1 is applied, only there are one smoke inlet and an outlet flue, and by the gear in embodiment one inside chimney
Plate 451 replaces with the third control valve 53 in the second branch 112.When 20 normal heavy-duty service of gas turbine unit
When, a whole set of off-gas recovery water-saving system puts into operation, need to close third control valve 53, flue gas is made to pass through the first branch 111
It enters in heat exchanger 41 after exchanging heat and is discharged again by chimney 45；Conversely, when gas turbine unit 20 starts or underload fortune
When row, a whole set of off-gas recovery water-saving system performance driving economy is poor, at this time by opening third control valve 53, the operation of flue gas
Mode then as the method for operation of conventional system, put idle discharge by chimney 45 by the smoke inlet for being directly entered chimney 45.This reality
It applies in example, the structure of chimney 45 is more simple.
111 are equipped with air-introduced machine 60 in the first branch, and are equipped between the air-introduced machine 60 and the waste heat boiler 10
4th control valve 54.The air-introduced machine 60 is speed change rotating machinery, can meet different machines by changing rotating speed of transmission shaft
Flue gas flow under group load, the air-introduced machine 60 can be frequency conversion centrifugal blower, Silence Process axial flow blower or Blade Adjustable Axial
Flow fan.
The 5th control valve 55 is equipped between the gas outlet 412 and the chimney 45 of the heat exchanger 41.Described 4th adjusts
Section valve 54 and the 5th control valve 55 are used cooperatively, and assist the circulation for adjusting flue gas under abnormal condition for air-introduced machine 60
Flow.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of off-gas recovery water-saving system, which is characterized in that including：Waste heat boiler and the combustion being connect respectively with waste heat boiler
Gas-turbine unit, steam turbine unit and heat-exchange unit, the heat-exchange unit include the heat exchanger being connect with waste heat boiler, are set to
Exchanger base and the water tank being connected to heat exchanger, the draining branch being connect with water tank are set to the water discharging valve of draining branch road,
And the chimney being connect with heat exchanger.
2. off-gas recovery water-saving system according to claim 1, which is characterized in that the heat exchanger by chimney with it is described
Waste heat boiler connects, and the chimney includes by the first cavity and the second cavity of barrier partitions to be opened/closed, first chamber
Body wall is equipped with the first smoke inlet and the first outlet flue being connected to the first cavity, and second cavity wall is equipped with and the second chamber
The second smoke inlet and the second outlet flue of body connection, first smoke inlet are connect with the waste heat boiler, first smoke
Mouth is connect with the air inlet of the heat exchanger, and the first control valve is equipped between first outlet flue and the air inlet；
Second smoke inlet is connect with the gas outlet of the heat exchanger, second outlet flue and atmosphere.
3. off-gas recovery water-saving system according to claim 2, which is characterized in that first control valve is changed with described
Air-introduced machine is equipped between the air inlet of hot device.
4. off-gas recovery water-saving system according to claim 3, which is characterized in that the air-introduced machine and the heat exchanger
The second control valve is equipped between air inlet.
5. off-gas recovery water-saving system according to claim 1, which is characterized in that the waste heat boiler passes through the first branch
It is connect with the air inlet of the heat exchanger, the gas outlet of the heat exchanger is connect with the chimney；The waste heat boiler passes through
Two branches are connect with the chimney, and the second branch is equipped with third control valve.
6. off-gas recovery water-saving system according to claim 5, which is characterized in that the first branch is equipped with air inducing
Machine, and the 4th control valve is equipped between the air-introduced machine and the waste heat boiler.
7. off-gas recovery water-saving system according to claim 6, which is characterized in that the gas outlet of the heat exchanger with it is described
The 5th control valve is equipped between chimney.
8. according to claim 1-7 any one of them off-gas recovery water-saving systems, which is characterized in that further include for monitoring water
The liquid level emasuring device of liquid level in case, and the water monitoring device for monitoring water quality in water tank.
9. off-gas recovery water-saving system according to claim 8, which is characterized in that the draining branch includes the first draining
Branch, the second draining branch and third drain branch, and the water discharging valve includes the first water discharging valve, the second water discharging valve and the
Three water discharging valves, first water discharging valve, the second water discharging valve and third water discharging valve are respectively arranged on the first draining branch,
Two draining branches and third draining branch road.
10. off-gas recovery water-saving system according to claim 9, which is characterized in that also set on the first draining branch
Water position manages device, and first water discharging valve is between the water treatment facilities and the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492767.0A CN108561230A (en) | 2017-12-30 | 2017-12-30 | Off-gas recovery water-saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492767.0A CN108561230A (en) | 2017-12-30 | 2017-12-30 | Off-gas recovery water-saving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108561230A true CN108561230A (en) | 2018-09-21 |
Family
ID=63530647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711492767.0A Pending CN108561230A (en) | 2017-12-30 | 2017-12-30 | Off-gas recovery water-saving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108561230A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353207A (en) * | 1980-08-20 | 1982-10-12 | Westinghouse Electric Corp. | Apparatus for removing NOx and for providing better plant efficiency in simple cycle combustion turbine plants |
| US20040139747A1 (en) * | 2003-01-21 | 2004-07-22 | Erickson Donald C. | Steam ammonia power cycle |
| CN102817714A (en) * | 2012-09-03 | 2012-12-12 | 中国船舶重工集团公司第七○三研究所 | Combustion gas turbine circulating device with intermediate water spray cooling and steam reinjection |
| CN202867001U (en) * | 2012-09-11 | 2013-04-10 | 上海中科高等研究院 | Distributed cooling, heating and power combined supply system for small-sized combustion gas turbines |
| CN104428516A (en) * | 2012-07-13 | 2015-03-18 | 阿尔斯通技术有限公司 | Gas turbine power plant with flue gas recirculation |
| CN104533623A (en) * | 2015-01-06 | 2015-04-22 | 中国科学院工程热物理研究所 | Positive and negative partial oxidation and steam injection combined circulation of gas turbine |
| CN106499455A (en) * | 2016-12-19 | 2017-03-15 | 中国能源建设集团广东省电力设计研究院有限公司 | Combined-cycle power plant's soda pop backheat and fuel heating integrated put forward effect system |
| CN107165723A (en) * | 2017-07-05 | 2017-09-15 | 中国大唐集团科学技术研究院有限公司华中分公司 | Integrate efficiently, water saving, the controllable co-generation system of gas turbine four |
-
2017
- 2017-12-30 CN CN201711492767.0A patent/CN108561230A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353207A (en) * | 1980-08-20 | 1982-10-12 | Westinghouse Electric Corp. | Apparatus for removing NOx and for providing better plant efficiency in simple cycle combustion turbine plants |
| US20040139747A1 (en) * | 2003-01-21 | 2004-07-22 | Erickson Donald C. | Steam ammonia power cycle |
| CN104428516A (en) * | 2012-07-13 | 2015-03-18 | 阿尔斯通技术有限公司 | Gas turbine power plant with flue gas recirculation |
| CN102817714A (en) * | 2012-09-03 | 2012-12-12 | 中国船舶重工集团公司第七○三研究所 | Combustion gas turbine circulating device with intermediate water spray cooling and steam reinjection |
| CN202867001U (en) * | 2012-09-11 | 2013-04-10 | 上海中科高等研究院 | Distributed cooling, heating and power combined supply system for small-sized combustion gas turbines |
| CN104533623A (en) * | 2015-01-06 | 2015-04-22 | 中国科学院工程热物理研究所 | Positive and negative partial oxidation and steam injection combined circulation of gas turbine |
| CN106499455A (en) * | 2016-12-19 | 2017-03-15 | 中国能源建设集团广东省电力设计研究院有限公司 | Combined-cycle power plant's soda pop backheat and fuel heating integrated put forward effect system |
| CN107165723A (en) * | 2017-07-05 | 2017-09-15 | 中国大唐集团科学技术研究院有限公司华中分公司 | Integrate efficiently, water saving, the controllable co-generation system of gas turbine four |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11821637B2 (en) | Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating | |
| CN107120714B (en) | A kind of whole yearization comprehensive utilization energy conserving system | |
| CN109855109B (en) | Deep recovery device and method for exhaust gas waste heat of power station boiler | |
| CN107905897A (en) | Gas turbine cycle flue gas waste heat recovery and inlet gas cooling association system and method | |
| CN105889897B (en) | A kind of thermal power plant residual heat integrative recycling system and method | |
| CN107178814A (en) | A kind of thermal power plant boiler fume afterheat is used for the energy conserving system of central heating | |
| CN108253443A (en) | A kind of coal-fired plant flue gas water recycling and complementary energy synthesis utilize system | |
| CN105333450B (en) | A kind of backheat of thermal power generation, the system of residual heat integrative cascade utilization | |
| CN205065770U (en) | Flue gas waste heat recovery device | |
| CN102839999B (en) | Small steam turbine exhaust steam cold source loss recovery system and method | |
| CN105546564A (en) | Energy-saving recycling system for low-grade heat energy in smoke pollutant treatment of thermal power plant | |
| CN208040541U (en) | Gas turbine cycle flue gas waste heat recovery and inlet gas cooling association system | |
| CN104132541B (en) | A kind of flue gas waste heat recovery and gradient utilization system | |
| CN107202318A (en) | A kind of heat of smoke discharged from boiler of power station deep exploitation and water reclamation system | |
| CN104864448B (en) | A kind of hot water supply system of energy-conservation | |
| CN204693371U (en) | One directly reclaims turbine discharge waste heat and heat-setting water system | |
| CN103604212B (en) | A kind of large temperature difference well head heater and the method for operation thereof | |
| CN109611210A (en) | Gas turbine inlet air temperature control system | |
| CN103638784B (en) | A kind of external heated type wet flue gas dehumanization method and dehumidification system | |
| CN204943445U (en) | For reclaiming the system of coal steam-electric plant smoke waste heat and raising flue gas dust collection efficiency | |
| CN107213745A (en) | A kind of dehumanization method of combustion gas dehumidification system and tail of semi coke | |
| CN108561230A (en) | Off-gas recovery water-saving system | |
| CN109798582A (en) | A kind of heat pump heat distribution system of depth exhaust steam residual heat recycling | |
| CN109798692A (en) | A kind of air-cooled and wet type cooling unit mixed running system | |
| CN112797810B (en) | Condensation heat recovery system of power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180921 |
|
| RJ01 | Rejection of invention patent application after publication |