CN110056900A - A kind of GTCC power plant starting trouble afterheat utilizing system - Google Patents

A kind of GTCC power plant starting trouble afterheat utilizing system Download PDF

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Publication number
CN110056900A
CN110056900A CN201910292954.7A CN201910292954A CN110056900A CN 110056900 A CN110056900 A CN 110056900A CN 201910292954 A CN201910292954 A CN 201910292954A CN 110056900 A CN110056900 A CN 110056900A
Authority
CN
China
Prior art keywords
heat medium
medium water
starting trouble
heat
exchanger channels
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
Application number
CN201910292954.7A
Other languages
Chinese (zh)
Inventor
韩磊
田冠玉
李冬
陈腾飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Boiler Pressure Vessel Examination Center Co Ltd
East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd
Original Assignee
Datang Boiler Pressure Vessel Examination Center Co Ltd
East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Datang Boiler Pressure Vessel Examination Center Co Ltd, East China Electric Power Test Institute of China Datang Corp Science and Technology Research Institute Co Ltd filed Critical Datang Boiler Pressure Vessel Examination Center Co Ltd
Priority to CN201910292954.7A priority Critical patent/CN110056900A/en
Publication of CN110056900A publication Critical patent/CN110056900A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00Features, 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
    • F02C7/22Fuel supply systems
    • F02C7/224Heating fuel before feeding to the burner
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/02Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
    • F22D1/04Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having plain outer surfaces, e.g. in vertical arrangement
    • F22D1/06Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having plain outer surfaces, e.g. in vertical arrangement in horizontal arrangement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22GSUPERHEATING OF STEAM
    • F22G7/00Steam superheaters characterised by location, arrangement, or disposition
    • F22G7/12Steam superheaters characterised by location, arrangement, or disposition in flues
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H8/00Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

Abstract

Superheater, boiler economizer, the waste heat economizer being sequentially arranged along smoke evacuation direction are equipped with the invention discloses a kind of GTCC power plant starting trouble afterheat utilizing system, in starting trouble smoke exhaust mechanism;The heat medium water loop head of heating water tank is connected to first heat medium water heat exchanger channels one end;Second heat medium water heat exchanger channels both ends of heated by natural gas device are connected to respectively with the heat medium water loop exit of heating water tank and the connection of the first heat medium water heat exchanger channels.Pass through the GTCC power plant starting trouble afterheat utilizing system of above-mentioned optimization design, utilize heat medium water needed for starting trouble back-end ductwork waste-heat heated by natural gas device, and auxiliary a small amount of starting trouble superheated steam has saved energy consumption while having ensured combustion engine system safe and highly efficient operation;The use for reducing GOOD TASTE thermal energy starting trouble superheated steam, realizes the cascade utilization of the energy;And this regulative mode increases the regulating measure of heated by natural gas and has widened adjustable range.

Description

A kind of GTCC power plant starting trouble afterheat utilizing system
Technical field
The present invention relates to boiler afterheats to utilize field more particularly to a kind of GTCC power plant starting trouble afterheat utilizing system.
Background technique
Natural gas temperature has larger impact, while natural temperature for the burning of gas turbine and combustion chamber dynamic characteristic Degree is also used for fuel and calculates fuel flow rate and fuel analysis, guarantees that reasonable natural gas intake air temperature is most important.Minimum day Right temperature degree is higher than the dew point of hydrocarbon, and hydrocarbon is avoided to liquefy.Gaseous fuel supplying temperature at least keeps high In 28 DEG C of the degree of superheat of hydrocarbon dew point, whenever cannot there are liquid hydrocarbon and water in gaseous fuel.In order to The requirement for meeting natural gas temperature, in unit ignition into full speed idle operation, there are two main classes for the control of natural gas temperature, and one Class is heated by electric heater, and another kind of is to utilize starting trouble superheated steam Hybrid Heating heat medium water, then change by air-water Hot device heat exchange is to realize.The unit normal on-load stage can pass through the fume afterheat heated natural gas of waste heat boiler tail portion.Electricity adds Hot device is controlled frequently with the temperature difference, i.e., heater outlet natural gas temperature and inlet temperature difference are less than certain value, electric heater one Straight starting, stops working after difference reaches certain value, in addition, heater is certainly when heater outlet natural gas temperature is excessively high Dynamic tripping, prevents heater body natural gas hot-spot to be carbonized.
Existing GTCC power plant day Hot gas heating systems heat natural in the unit starting stage frequently with Electric heating Gas, energy consumption is huge, and be easy to cause hot-spot, natural gas carbonization;And it is equipped with the GTCC power plant of starting trouble, often utilize starting The superheated steam that boiler generates usually only requires heat to 40-60 DEG C by heat exchange natural gas, natural gas, high temperature and pressure Superheated steam is lower for heated natural gas economy.
Summary of the invention
To solve technical problem present in background technique, the present invention proposes a kind of GTCC power plant starting trouble UTILIZATION OF VESIDUAL HEAT IN System.
A kind of GTCC power plant starting trouble afterheat utilizing system proposed by the present invention, comprising: starting trouble burner hearth and tail portion Flue, heating water tank, heated by natural gas device;
It is equipped with discharge flue in starting trouble burner hearth and back-end ductwork, is equipped in the discharge flue along smoke evacuation direction successively Superheater, boiler economizer, the waste heat economizer of arrangement, the waste heat economizer is interior to be equipped with the first heat medium water heat exchanger channels;
Heating water tank is equipped with heat medium water loop head and heat medium water loop exit, and the heat medium water loop head passes through pipe Road is connected to first heat medium water heat exchanger channels one end;
Heated by natural gas device is equipped with the second heat medium water heat exchanger channels, described second heat medium water heat exchanger channels one end and heating The heat medium water loop exit of water tank is connected to, and the other end passes through pipeline and the first heat medium water heat exchanger channels far from heating water tank One end connection.
Preferably, the pipeline between the heat medium water loop head and the first heat medium water heat exchanger channels is equipped with booster.
Preferably, superheated steam entrance is additionally provided in heating water tank.
Preferably, spray head is equipped in heating water tank, the spray head is connected to the heat medium water loop head.
Preferably, the pipeline between the second heat medium water heat exchanger channels and the first heat medium water heat exchanger channels is equipped with Water supplement port.
Preferably, the structure of waste heat economizer is finned using helix fin formula, light pipe type or H.
Preferably, the outlet side of the discharge flue is equipped with chimney.
In the present invention, the GTCC power plant starting trouble afterheat utilizing system proposed, starting trouble burner hearth and back-end ductwork Discharge flue in be equipped with along smoke evacuation the direction superheater, boiler economizer, the waste heat economizer that are sequentially arranged, the waste heat saves coal The first heat medium water heat exchanger channels are equipped in device;The heat medium water loop head of heating water tank and first heat medium water heat exchanger channels one end connect It is logical;Second heat medium water heat exchanger channels both ends of heated by natural gas device be connected to respectively with the heat medium water loop exit of heating water tank and The connection of first heat medium water heat exchanger channels.By the GTCC power plant starting trouble afterheat utilizing system of above-mentioned optimization design, using opening Heat medium water needed for dynamic boiler back end ductwork waste-heat heated by natural gas device, and auxiliary a small amount of starting trouble is overheated and is steamed Vapour has reached the requirement of heated by natural gas to specific temperature, while having ensured combustion engine system safe and highly efficient operation, saves Energy consumption;The use for reducing GOOD TASTE thermal energy starting trouble superheated steam, realizes the cascade utilization of the energy;And it is this Regulative mode increases the regulating measure of heated by natural gas and has widened adjustable range.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of GTCC power plant starting trouble afterheat utilizing system proposed by the present invention.
Specific embodiment
As shown in FIG. 1, FIG. 1 is a kind of structural representations of GTCC power plant starting trouble afterheat utilizing system proposed by the present invention Figure.
Referring to Fig.1, a kind of GTCC power plant starting trouble afterheat utilizing system proposed by the present invention, comprising: starting trouble row Smoke machine structure 13, heating water tank 8, heated by natural gas device 15;
It is equipped with discharge flue 12 in starting trouble smoke exhaust mechanism 13, is equipped in the discharge flue 12 along smoke evacuation direction successively Superheater 11, boiler economizer 5, the waste heat economizer 4 of arrangement, the waste heat economizer 4 are interior logical equipped with the heat exchange of the first heat medium water Road;
Heating water tank 8 is equipped with heat medium water loop head and heat medium water loop exit, and the heat medium water loop head passes through Pipeline is connected to first heat medium water heat exchanger channels one end;
Heated by natural gas device 15 be equipped with the second heat medium water heat exchanger channels, described second heat medium water heat exchanger channels one end with plus The heat medium water loop exit of boiler 8 is connected to, and the other end by pipeline and implements the first heat medium water heat exchanger channels far from heating The connection of 8 one end of water tank.
In the specific work process of the GTCC power plant starting trouble afterheat utilizing system of the present embodiment, when starting trouble burns The flue gas of formation enters in smoke exhaust mechanism, flows through waste heat province after superheater, boiler economizer heat exchange in discharge flue Coal device is discharged into atmosphere after further being cooled down by waste heat economizer;Heated by natural gas device utilizes heating agent by air-water heat exchange Water heated natural gas, the heat medium water for having heated natural gas are saved by the waste heat that heated by natural gas device flows back into discharge flue Coal device, after heat medium water is heated in waste heat economizer by flue gas again, by waste heat economizer by heat medium water loop head into Enter heating water tank to be mixed, mixed heat medium water enters heated by natural gas device heated natural gas, completes a circulation.
In the present embodiment, the GTCC power plant starting trouble afterheat utilizing system proposed, starting trouble smoke exhaust mechanism Superheater, boiler economizer, the waste heat economizer being sequentially arranged along smoke evacuation direction, the waste heat economizer are equipped in discharge flue Inside it is equipped with the first heat medium water heat exchanger channels;The heat medium water loop head of heating water tank and first heat medium water heat exchanger channels one end connect It is logical;Second heat medium water heat exchanger channels both ends of heated by natural gas device be connected to respectively with the heat medium water loop exit of heating water tank and The connection of first heat medium water heat exchanger channels.By the GTCC power plant starting trouble afterheat utilizing system of above-mentioned optimization design, using opening Heat medium water needed for dynamic boiler back end ductwork waste-heat heated by natural gas device, and auxiliary a small amount of starting trouble is overheated and is steamed Vapour has reached the requirement of heated by natural gas to specific temperature, while having ensured combustion engine system safe and highly efficient operation, saves Energy consumption;The use for reducing GOOD TASTE thermal energy starting trouble superheated steam, realizes the cascade utilization of the energy;And it is this Regulative mode increases the regulating measure of heated by natural gas and has widened adjustable range.
In a specific embodiment, it is set on the pipeline between the heat medium water loop head and the first heat medium water heat exchanger channels There is booster 9, is pressurizeed by booster to the heat medium water entered in the second heat medium water heat exchanger channels.
In other specific embodiments, superheated steam entrance 7 is additionally provided in heating water tank 8;When heating agent coolant-temperature gage cannot Meet when heated by natural gas is arrived assigned temperature, a small amount of starting trouble overheat is passed through into heating water tank by superheated steam entrance Steam, superheated steam can enter heating water tank and heat medium water mixing, to meet the needs of heat, improve utilization rate of waste heat.
In order to improve, spray head is equipped in heating water tank 8, the spray head is connected to the heat medium water loop head;From And enhance mixing of the heat medium water in heating water tank.
In order to supplement the loss of heat medium water in the circulating cycle, the second heat medium water heat exchanger channels are changed with first heat medium water Pipeline between the passage of heat is equipped with water supplement port 2, the moisturizing into circulation waterway by water supplement port.
In the specific choice mode of waste heat economizer, the structure of waste heat economizer 4 using helix fin formula, light pipe type or H is finned.
In the specific design method of smoke exhaust mechanism, the outlet side of the discharge flue 12 is equipped with chimney 3, passes through row Cigarette chimney is convenient for the tail gas to cool down through heat exchange discharge.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (7)

1. a kind of GTCC power plant starting trouble afterheat utilizing system characterized by comprising starting trouble smoke exhaust mechanism (13), Heating water tank (8), heated by natural gas device (15);
Discharge flue (12) are equipped in starting trouble smoke exhaust mechanism (13), be equipped in the discharge flue (12) along smoke evacuation direction according to Superheater (11), boiler economizer (5), the waste heat economizer (4) of secondary arrangement, the waste heat economizer (4) is interior to be equipped with the first heat Matchmaker's water heat exchanger channels;
Heating water tank (8) is equipped with heat medium water loop head and heat medium water loop exit, and the heat medium water loop head passes through pipe Road is connected to first heat medium water heat exchanger channels one end;
Heated by natural gas device (15) is equipped with the second heat medium water heat exchanger channels, described second heat medium water heat exchanger channels one end and heating The heat medium water loop exit of water tank (8) is connected to, and the other end passes through pipeline and the separate heating of the first heat medium water heat exchanger channels The connection of water tank (8) one end.
2. GTCC power plant starting trouble afterheat utilizing system according to claim 1, which is characterized in that the heat medium water follows Pipeline between ring entrance and the first heat medium water heat exchanger channels is equipped with booster (9).
3. GTCC power plant starting trouble afterheat utilizing system according to claim 1, which is characterized in that heating water tank (8) On be additionally provided with superheated steam entrance (7).
4. GTCC power plant starting trouble afterheat utilizing system according to claim 1 or 3, which is characterized in that heating water tank (8) spray head is equipped in, the spray head is connected to the heat medium water loop head.
5. GTCC power plant starting trouble afterheat utilizing system according to claim 1, which is characterized in that second heating agent Pipeline between water heat exchanger channels and the first heat medium water heat exchanger channels is equipped with water supplement port (2).
6. GTCC power plant starting trouble afterheat utilizing system according to claim 1, which is characterized in that waste heat economizer (4) structure is finned using helix fin formula, light pipe type or H.
7. GTCC power plant starting trouble afterheat utilizing system according to claim 1, which is characterized in that the discharge flue (12) outlet side is equipped with chimney (3).
CN201910292954.7A 2019-04-12 2019-04-12 A kind of GTCC power plant starting trouble afterheat utilizing system Pending CN110056900A (en)

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CN201910292954.7A CN110056900A (en) 2019-04-12 2019-04-12 A kind of GTCC power plant starting trouble afterheat utilizing system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110513165A (en) * 2019-09-04 2019-11-29 深圳万润节能有限公司 A kind of cold, heat and electricity triple supply distributed energy resource system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305413A (en) * 2011-07-28 2012-01-04 中国电力工程顾问集团西南电力设计院 Exhaust gas waste heat recovery and emission reduction comprehensive application system for coal-fired boiler in thermal power plant
CN203731368U (en) * 2013-12-31 2014-07-23 华电电力科学研究院 Device for deep recovery of smoke discharge waste heat of waste heat boiler
CN105889897A (en) * 2016-01-29 2016-08-24 中国电力工程顾问集团西北电力设计院有限公司 Comprehensive recycling system and method of waste heat in thermal power plant
CN206320726U (en) * 2016-12-16 2017-07-11 东方电气集团东方锅炉股份有限公司 A kind of thermal power plant's tail flue gas afterheat utilizing system coupled based on machine stove depth
CN107120636A (en) * 2017-05-22 2017-09-01 大唐(北京)能源管理有限公司 A kind of coal fired power plant low temperature exhaust heat deep exploitation system
CN209876968U (en) * 2019-04-12 2019-12-31 中国大唐集团科学技术研究院有限公司华东电力试验研究院 Waste heat utilization system for starting boiler of gas turbine power plant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305413A (en) * 2011-07-28 2012-01-04 中国电力工程顾问集团西南电力设计院 Exhaust gas waste heat recovery and emission reduction comprehensive application system for coal-fired boiler in thermal power plant
CN203731368U (en) * 2013-12-31 2014-07-23 华电电力科学研究院 Device for deep recovery of smoke discharge waste heat of waste heat boiler
CN105889897A (en) * 2016-01-29 2016-08-24 中国电力工程顾问集团西北电力设计院有限公司 Comprehensive recycling system and method of waste heat in thermal power plant
CN206320726U (en) * 2016-12-16 2017-07-11 东方电气集团东方锅炉股份有限公司 A kind of thermal power plant's tail flue gas afterheat utilizing system coupled based on machine stove depth
CN107120636A (en) * 2017-05-22 2017-09-01 大唐(北京)能源管理有限公司 A kind of coal fired power plant low temperature exhaust heat deep exploitation system
CN209876968U (en) * 2019-04-12 2019-12-31 中国大唐集团科学技术研究院有限公司华东电力试验研究院 Waste heat utilization system for starting boiler of gas turbine power plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110513165A (en) * 2019-09-04 2019-11-29 深圳万润节能有限公司 A kind of cold, heat and electricity triple supply distributed energy resource system

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