CN109339881A - A kind of Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems and method - Google Patents
A kind of Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems and method Download PDFInfo
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- CN109339881A CN109339881A CN201811156526.3A CN201811156526A CN109339881A CN 109339881 A CN109339881 A CN 109339881A CN 201811156526 A CN201811156526 A CN 201811156526A CN 109339881 A CN109339881 A CN 109339881A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 89
- 239000002918 waste heat Substances 0.000 claims abstract description 65
- 238000005507 spraying Methods 0.000 claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 230000001105 regulatory effect Effects 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- 239000000567 combustion gas Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 241000208125 Nicotiana Species 0.000 abstract description 12
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 12
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- 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
-
- 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
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
-
- 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
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
-
- 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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- 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 present invention relates to a kind of Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems and method, it belongs to gas turbine power generation field.Control system of the present invention includes gas turbine blower, gas-turbine combustion chamber, the turbine of gas turbine, waste heat boiler and turbine exhaust temperature measuring device, waste heat boiler inlet temperature measuring device, boiler exhaust CO measuring device and spraying device, gas turbine blower, gas-turbine combustion chamber, the turbine of gas turbine is sequentially connected with waste heat boiler, turbine exhaust temperature measuring device is located at the turbine exhaust outlet of gas turbine, waste heat boiler inlet temperature measuring device is located at exhaust-heat boiler inlet, boiler exhaust CO measuring device is located at waste heat boiler smoke evacuation, spraying device is located in the turbine exhaust exhaust pass of gas turbine.The present invention also provides a kind of control methods.Present system advantages of simple, operating cost is low, reduces the NO in gas turbine start-up course2Discharge, to alleviate or eliminate starting tobacco.
Description
Technical field
The present invention relates to a kind of system and method, more particularly, to a kind of Combined-cycle Gas Turbine Unit start-up course
NO2Emission control systems and method, and in particular to a kind of heavy duty gas turbine combined cycle start-up course NO_x elimination
Method and system, it belongs to gas turbine power generation field.
Background technique
Have the characteristics that efficient, low emission, and unit starting by the Combined-cycle Gas Turbine Unit of fuel of natural gas
Fastly.The a large amount of Combined-cycle Gas Turbine Unit in China is used for peak load regulation network.A large amount of Combined-cycle Gas Turbine Units are starting
In the process, the phenomenon that emitting tobacco there are chimney.
Studies have shown that the generation of tobacco is due to NO in the smoke evacuation of unit in low- load conditions2Too high levels cause, and work as row
NO in cigarette2When reaching about 10ppm or more, that is, it will appear macroscopic faint yellow smoke evacuation.In order to slow down or eliminate combustion gas
The tobacco phenomenon of turbine combined cycle unit start-up course, gas turbine producer constantly update its burner.
By taking GE company as an example, in order to solve the problems, such as the tobacco in its F grades of Combined-cycle Gas Turbine Unit start-up course, open
Send out the full premix DLN2.6+ burner completely with out diffusion combustion, and by adjusting technologies such as the strategies of unit starting process,
The tobacco phenomenon of start-up course is greatly reduced, but still NO cannot be completely eliminated2Discharge bring tobacco problem.Other removals are opened
NO during dynamic2Method include by the method for the catalysis reduction such as SCR in waste heat boiler by NO2N is reduced into NO2.But
It is that one side this method will increase investment and operating cost, on the other hand, for retrofitted unit, needs in waste heat boiler flue
In be reserved with the space of SCR arrangement so that the application of this method is limited.
Publication date is on 06 15th, 2016, in the Chinese patent of Publication No. 105674329A, discloses a kind of title
For the patent of invention of " using the gas turbine burner and control method of synthesis gas fuel ".The patent burner top it is multiple
Burner is used to convey air and fuel enters combustion chamber from the top down, and outlet at bottom leads to turbine；Burner, which is integrated with, to be separated
Air and fuel channel；Pressure or flow measurement device are set in burner air duct, for measuring air mass flow；Fuel is logical
Road by external synthesis gas mixed vapour perhaps other non-combustible gas in steam or other non-combustible gas passage upstreams
Flow regulator is installed, control device synthesizes throughput and component according to each burner air mass flow, and control flow adjusts dress
The flow of adjustment steam or other non-combustible gas is set, to change the fuel flow rate and group for entering combustion chamber by the burner
Point, so that the air mass flow and fuel value by each burner reach proper proportion, although the patent can make synthesis gas fuel
Stablize burning in gas turbine burner, avoids burner hot-spot, while reducing discharged nitrous oxides, but and the application
System structure and control method it is different, the application system more advantages of simple, operating cost is low, and reduction started in gas turbine
NO in journey2Discharge, to alleviate or eliminate starting tobacco.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of simple conjunction of system design
Reason, operating cost is low, reduces the NO in gas turbine start-up course2Discharge, to alleviate or eliminate the combustion of starting tobacco
Gas-turbine combined cycle unit start-up course NO2Emission control systems and method.
Technical solution used by the present invention solves the above problems is: the Combined-cycle Gas Turbine Unit start-up course
NO2Emission control systems include generator, low pressure (LP) cylinder, intermediate pressure cylinder, high pressure cylinder, gas turbine blower, gas-turbine combustion chamber,
Turbine, waste heat boiler and the high pressure water pump of gas turbine, the generator, low pressure (LP) cylinder, intermediate pressure cylinder, high pressure cylinder, gas turbine
Compressor, gas-turbine combustion chamber, the turbine of gas turbine and waste heat boiler are sequentially connected, waste heat boiler and gas turbine
Match, high pressure water pump is connected to waste heat boiler, it is characterised in that: further include turbine exhaust temperature measuring device, waste heat boiler into
Mouth temperature measuring device, boiler exhaust CO measuring device and spraying device, the turbine exhaust temperature measuring device setting are being fired
The turbine exhaust of gas-turbine exports, and the setting of waste heat boiler inlet temperature measuring device is surveyed in exhaust-heat boiler inlet, boiler exhaust CO
It measures device to be arranged at waste heat boiler smoke evacuation, spraying device is arranged in the turbine exhaust exhaust pass of gas turbine, spraying to fill
The water supply set passes through high pressure water pump；System is simple, and operating cost is low, reduces the NO in gas turbine start-up course2Discharge,
To alleviate or eliminate starting tobacco.
Preferably, Combined-cycle Gas Turbine Unit start-up course NO of the present invention2Emission control systems, it is special
Sign is: further including spraying feed water flow regulating valve, the spraying feed water flow regulating valve setting is in high pressure water pump and by spraying
On the connecting pipeline of device；Spraying feed water flow regulating valve, the spraying water of adjustable spraying device quickly reduce flue-gas temperature.
Preferably, Combined-cycle Gas Turbine Unit start-up course NO of the present invention2Emission control systems, it is special
Sign is: further including oxygen-eliminating device, oxygen-eliminating device is arranged in the output end of the waste heat boiler.
Preferably, Combined-cycle Gas Turbine Unit start-up course NO of the present invention2Emission control systems, it is special
Sign is: the boiler exhaust CO measuring device is arranged at the smoke evacuation of waste heat boiler tail portion.
The present invention also provides a kind of Combined-cycle Gas Turbine Unit start-up course NO2Discharge control method, using combustion gas
Turbine combined cycle unit start-up course NO2Emission control systems, it is characterised in that: steps are as follows:
Gas Turbine Combined-cycle starting, the turbine exhaust temperature of gas turbine is monitored by turbine exhaust temperature measuring device,
The CO discharge for monitoring the turbine of gas turbine by boiler exhaust CO measuring device simultaneously, when the turbine for monitoring gas turbine is arranged
Temperature degree is more than 500 DEG C, and when the exhaust CO concentration of waste heat boiler is greater than 30ppm, opens spraying feed water flow regulating valve, adjust
The spraying water of spraying device, quickly reduces flue-gas temperature；Monitor waste heat measured by waste heat boiler inlet temperature measuring device
Boiler inlet temperature adjusts water flow by spraying feed water flow regulating valve, so that waste heat boiler inlet temperature measuring device is surveyed
The flue-gas temperature obtained is lower than 500 DEG C.
Compared with prior art, the present invention having the following advantages that and effect: alleviation even is eliminated Gas Turbine Combined-cycle
The tobacco problem of start-up course；System is simple, and operating cost is low.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention.
In figure: gas turbine blower 1, gas-turbine combustion chamber 2, the turbine 3 of gas turbine, waste heat boiler 4, high pressure is given
Water pump 5, spraying device 6, spraying feed water flow regulating valve 7, turbine exhaust temperature measuring device 8, waste heat boiler inlet temperature are surveyed
Amount device 9, boiler exhaust CO measuring device 10, generator 11, low pressure (LP) cylinder 12, intermediate pressure cylinder 13, high pressure cylinder 14, condenser 15 coagulate
Bear water pump 16, oxygen-eliminating device 17, low pressure feed water pump 18, middle pressure feed pump 19, high pressure superheated steam A, in press through hot steam B, low pressure
Superheated steam C, discharge fume D, air E, fuel gas F, moisturizing G.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems include generator 11, low pressure
Cylinder 12, intermediate pressure cylinder 13, high pressure cylinder 14, gas turbine blower 1, gas-turbine combustion chamber 2, the turbine 3 of gas turbine, waste heat pot
Furnace 4, high pressure water pump 5, turbine exhaust temperature measuring device 8, waste heat boiler inlet temperature measuring device 9, boiler exhaust CO are surveyed
Device 10 and spraying device 6 are measured,
The generator 11 of the present embodiment, low pressure (LP) cylinder 12, intermediate pressure cylinder 13, high pressure cylinder 14, gas turbine blower 1, gas turbine combustion
Burn room 2, gas turbine turbine 3 and waste heat boiler 4 be sequentially connected, waste heat boiler 4 respectively with low pressure (LP) cylinder 12, intermediate pressure cylinder 13 and height
Cylinder pressure 14 is connected, and waste heat boiler 4 is matched with gas turbine, and high pressure water pump 5 is connected to waste heat boiler 4, the turbine exhaust temperature
3 air exit of turbine of gas turbine is arranged in degree measuring device 8, and waste heat boiler inlet temperature measuring device 9 is arranged in waste heat
4 entrance of boiler, boiler exhaust CO measuring device 10 are arranged at 4 smoke evacuation of waste heat boiler, and gas turbine is arranged in spraying device 6
In 3 air exit flue of turbine, the water supply of spraying device 6 is connected to high pressure water pump 5.
The connecting pipeline of high pressure water pump 5 Yu spraying device 6 is arranged in the spraying feed water flow regulating valve 7 of the present embodiment
On.
The boiler exhaust CO measuring device 10 of the present embodiment is arranged at 4 tail portion smoke evacuation of waste heat boiler.
The outlet of the present embodiment mesolow cylinder 12 is sequentially connected in series after condenser 15 and condensate pump 16 and 4 phase of waste heat boiler
Even, the output end of waste heat boiler 4 is connected with oxygen-eliminating device 17, the outlet end of the oxygen-eliminating device 17 pumps 18 by low pressure feed water respectively, in
Pressure feed pump 19, high pressure water pump 5 are connected with the input terminal of waste heat boiler 4, and waste heat boiler 4 exports high pressure superheated steam A and enters
High pressure cylinder 14 presses through hot steam B in the output of waste heat boiler 4 and enters intermediate pressure cylinder 13, waste heat boiler 4 export low-pressure superheated steam C into
Enter low pressure (LP) cylinder 12, the rear end of waste heat boiler 4 enters gas turbine blower 1 for the D that discharges fume, air E, and fuel gas F enters combustion gas
Turbine combustion room 2, moisturizing G fill into waste heat boiler 4 and condensate pump 16 according to demand.
The present embodiment purpose be achieved in that by the study found that Combined-cycle Gas Turbine Unit in start-up course
In, especially under the low load condition of start-up course, since 2 temperature of gas-turbine combustion chamber is low, incomplete combustion, combustion engine
Contain a large amount of CO in exhaust, the discharge of general CO can reach hundreds of ppm.And under the low load condition of start-up course, combustion
NOx content in machine exhaust can also reach tens of ppm, after the exhaust of turbine 3 of gas turbine enters waste heat boiler 4,
At suitable temperature, the NO in combustion engine exhaust can quickly be oxidized to NO2, this is Gas Turbine Combined-cycle chimney NO2Discharge
High one of the major reasons, work as NO2Discharge when reaching about 10ppm or more, just can be appreciated that chimney exhaust in faint yellow.Applicant
By the study found that temperature is to influence NO to NO under the oxygen concentration and water vapour content of gas turbine turbine exhaust2Conversion
Most important factor, when turbine exhaust temperature is greater than about 500 DEG C, stop of the combustion turbine exhaustion in waste heat boiler 4 will be led
Cause in exhaust NO to NO2Conversion.The present embodiment quickly works off one's feeling vent one's spleen to turbine exhaust using spraying method is exported in turbine
Body is cooled down, to prevent the NO in exhaust in waste heat boiler 4 to NO2Conversion.
The present embodiment is in 3 exhaust ports of turbine of gas turbine and the expansion segment outlet setting turbine exhaust of waste heat boiler 4
Temperature measuring device 8, waste heat boiler inlet temperature measuring device 9.Setting is spraying in the flue that the turbine 3 of gas turbine exports
Device 6.In gas turbine start-up course or under low load condition, when detecting that turbine outlet temperature is greater than about 500 DEG C, connection
When closing the CO discharge greater than about 30ppm of circulation smoke evacuation, draws a small amount of water supply from the water supply pump discharge of combined cycle bottoming cycle, lead to
Cross the spraying device 6 being arranged in gas turbine turbine exhaust pass, spray water into turbine exiting flue gas, high pressure water by nozzle with
After be atomized, into the flue of turbine exhaust, fast cooling is carried out to the exhaust of turbine 3 of gas turbine, turbine exhaust temperature is dropped
As low as 500 DEG C or less；By quickly reducing turbine exhaust temperature, avoid the NO in gas turbine turbine exhaust in waste heat boiler 4
In be converted into NO2, to slow down the NO in combined cycle unit start-up course2Tobacco problem caused by discharge.
The course of work that the present embodiment reduces the NO2 discharge of Gas Turbine Combined-cycle start-up course is: with combustion gas wheel
The starting of machine combined cycle, 3 delivery temperature of turbine of gas turbine is monitored by turbine exhaust temperature measuring device 8, is passed through simultaneously
Boiler exhaust CO measuring device 10 monitors the CO discharge of the turbine 3 of gas turbine, when the turbine 3 for monitoring gas turbine is vented temperature
Degree opens spraying feed water flow regulating valve 7, adjusts and spray more than 500 DEG C, and when the exhaust CO concentration of waste heat boiler 4 is greater than 30ppm
The spraying water of mist device 6, quickly reduces flue-gas temperature；Monitor waste heat measured by waste heat boiler inlet temperature measuring device 9
Boiler inlet temperature adjusts water flow by spraying feed water flow regulating valve 7, so that waste heat boiler inlet temperature measuring device 9
The flue-gas temperature measured is lower than 500 DEG C.
Water needed for spraying device 6 in the present embodiment both may come from the feed pump of boiler, can also have other to come
Source.4 tail of waste heat boiler can be both arranged in as in the present embodiment to the measurement of CO concentration in the smoke evacuation of turbine 3 of gas turbine
Portion, also can be set turbine exhaust to chimney any position for facilitating implementation or directly set from the pollutant monitoring of power plant
It is read in standby on-line checking result.
By reducing the temperature of turbine smoke evacuation by spraying to 500 DEG C hereinafter, 500 DEG C are a representative values in the present embodiment, have
The temperature of body can determine that the core of the present embodiment is to inhibit to fire by spraying fast cooling according to debugging the case where each unit
NO in gas-turbine turbine exhaust is in waste heat boiler 4 to NO2Conversion, reduce the NO of unit2Discharge even disappears to alleviate
Except chimney tobacco.
By above-mentioned elaboration, those skilled in the art can implement.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to
According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair
In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (5)
1. a kind of Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems, including generator, low pressure (LP) cylinder, middle pressure
Cylinder, high pressure cylinder, gas turbine blower, gas-turbine combustion chamber, the turbine of gas turbine, waste heat boiler and high pressure water pump,
The generator, low pressure (LP) cylinder, intermediate pressure cylinder, high pressure cylinder, gas turbine blower, gas-turbine combustion chamber, gas turbine turbine
It is sequentially connected with waste heat boiler, waste heat boiler is matched with gas turbine, and high pressure water pump is connected to waste heat boiler, and feature exists
In: it further include turbine exhaust temperature measuring device, waste heat boiler inlet temperature measuring device, boiler exhaust CO measuring device and spray
The turbine exhaust outlet of gas turbine, waste heat boiler inlet temperature is arranged in mist device, the turbine exhaust temperature measuring device
Measuring device setting is arranged at waste heat boiler smoke evacuation in exhaust-heat boiler inlet, boiler exhaust CO measuring device, and spraying device is set
It sets in the turbine exhaust exhaust pass of gas turbine, the water supply of spraying device passes through high pressure water pump.
2. Combined-cycle Gas Turbine Unit start-up course NO according to claim 12Emission control systems, feature exist
In: it further include spraying feed water flow regulating valve, the spraying feed water flow regulating valve is arranged in high pressure water pump and spraying device
Connecting pipeline on.
3. Combined-cycle Gas Turbine Unit start-up course NO according to claim 12Emission control systems, feature exist
In: it further include oxygen-eliminating device, oxygen-eliminating device is arranged in the output end of the waste heat boiler.
4. Combined-cycle Gas Turbine Unit start-up course NO according to claim 12Emission control systems, feature exist
In: the boiler exhaust CO measuring device is arranged at the smoke evacuation of waste heat boiler tail portion.
5. a kind of Combined-cycle Gas Turbine Unit start-up course NO2Discharge control method, using claim 1-4 any one
The Combined-cycle Gas Turbine Unit start-up course NO2Emission control systems, it is characterised in that: steps are as follows: combustion gas wheel
The starting of machine combined cycle, the turbine exhaust temperature of gas turbine is monitored by turbine exhaust temperature measuring device, while passing through pot
Fire grate gas CO measuring device monitors the CO discharge of the turbine of gas turbine, when the turbine exhaust temperature for monitoring gas turbine is more than
500 DEG C, and when the exhaust CO concentration of waste heat boiler is greater than 30ppm, spraying feed water flow regulating valve is opened, adjustable spraying device
Spraying water, quickly reduces flue-gas temperature；Monitor waste heat boiler import temperature measured by waste heat boiler inlet temperature measuring device
Degree adjusts water flow by spraying feed water flow regulating valve, so that the flue gas temperature that waste heat boiler inlet temperature measuring device measures
Degree is lower than 500 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156526.3A CN109339881B (en) | 2018-09-30 | 2018-09-30 | Starting process NO of gas turbine combined cycle unit 2 Emission control system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156526.3A CN109339881B (en) | 2018-09-30 | 2018-09-30 | Starting process NO of gas turbine combined cycle unit 2 Emission control system and method |
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| CN109339881A true CN109339881A (en) | 2019-02-15 |
| CN109339881B CN109339881B (en) | 2024-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943452A (en) * | 2021-02-23 | 2021-06-11 | 国电环境保护研究院有限公司 | Total process NO for controlling gas turbine unit to operate on gas turbine sideXSystem for discharging |
| CN115405427A (en) * | 2022-07-14 | 2022-11-29 | 江苏华电戚墅堰发电有限公司 | Decoupling operation method of 9FA single-shaft combined cycle unit |
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| CN105114936A (en) * | 2015-09-06 | 2015-12-02 | 中国华能集团清洁能源技术研究院有限公司 | System and method for maximum utilization of combined cycle low-temperature flue gas residual heat |
| CN106761982A (en) * | 2016-12-16 | 2017-05-31 | 华北电力大学 | A kind of new part backheating gas turbine combined cycle system |
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