CN110345461A - A kind of efficient waste heat electricity generation system - Google Patents
A kind of efficient waste heat electricity generation system Download PDFInfo
- Publication number
- CN110345461A CN110345461A CN201910629376.1A CN201910629376A CN110345461A CN 110345461 A CN110345461 A CN 110345461A CN 201910629376 A CN201910629376 A CN 201910629376A CN 110345461 A CN110345461 A CN 110345461A
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- China
- Prior art keywords
- air inlet
- gas outlet
- furnace
- electricity generation
- generation system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, 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
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, 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
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
- F23J2215/101—Nitrous oxide (N2O)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of efficient waste heat electricity generation systems, including combustion system, urosome processing unit, electricity generation system and cooling system, combustion system includes preheater, single-stage combustion furnace, secondary firing furnace and heat-exchanging furnace, the gas outlet of preheater air inlet connection boiler, the gas outlet of preheater connects single-stage combustion furnace air inlet, the air inlet of single-stage combustion furnace gas outlet connection secondary firing furnace, secondary firing furnace gas outlet connects heat-exchanging furnace air inlet, heat-exchanging furnace gas outlet is connect with exhaust gas processing device air inlet, electricity generation system includes economizer, drum, evaporator, superheater, steam turbine and the expansion power generator being connect with steam turbine, economizer air inlet is connected with exhaust gas processing device gas outlet, economizer gas outlet is connected with drum air inlet, the gas outlet of drum is connected with evaporator air inlet, evaporator goes out Port is connected with the air inlet of superheater, and superheater gas outlet is connected with steam turbine air inlet, and steam turbine gas outlet connects cooling system.
Description
Technical field
The present invention relates to a kind of efficient waste heat electricity generation systems.
Background technique
Fume afterheat resources loss is most important residual heat resources loss, accounts for the 60% of boiler afterheat resources loss
~70%.How effectively fume afterheat to be recycled, be of great significance, occurs utilizing " waste heat pot in the prior art
The technology of furnace+steam turbine " carries out the scheme of flue gas heat recovery, and still, such scheme is to carry out waste heat to high-temperature flue gas
The transformation for recycling generation technology does not still have for flue-gas temperature lower than 300C or exhaust gas volumn is smaller, waste heat is less flue gas
Effective waste heat recycle method.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of efficiently remaining for the above disadvantage of the existing technology
Heat generating system.
The technical solution that the present invention solves the above technical problem is: a kind of efficient waste heat electricity generation system, including combustion system,
Urosome processing unit, electricity generation system and cooling system, the combustion system include preheater, single-stage combustion furnace, secondary firing furnace
And heat-exchanging furnace, the gas outlet of the preheater air inlet connection boiler, the gas outlet of the preheater connects single-stage combustion furnace
Air inlet, single-stage combustion furnace gas outlet connect the air inlet of secondary firing furnace, secondary firing furnace gas outlet connection heat
Stove of exchanging air inlet, the heat-exchanging furnace gas outlet are connect with exhaust gas processing device air inlet, and the electricity generation system includes saving coal
Device, drum, evaporator, superheater, steam turbine and the expansion power generator being connect with steam turbine, the economizer air inlet and tail
The gas outlet of Flash Gas Compression Skid System is connected, and the economizer gas outlet is connected with drum air inlet, the gas outlet of the drum
It is connected with evaporator air inlet, the gas outlet of the evaporator is connected with the air inlet of superheater, the superheater outlet
Mouth is connected with steam turbine air inlet, and the steam turbine gas outlet connects cooling system.
The present invention further limits scheme:
It is above-mentioned to be provided with air-introduced machine between the gas outlet and single-stage combustion furnace air inlet of preheater.
Exhaust gas processing device above-mentioned includes desulfurizer, dust-extraction unit and denitrification apparatus.
Above-mentioned to be provided with heat exchanger between economizer gas outlet and drum air inlet, which is pipe shell type heat exchange
Device.
Cooling recirculation system above-mentioned includes condenser, condenser pump and oxygen-eliminating device, and air inlet and the steam turbine of condenser go out
Port is connected, and condensator outlet is connected by condenser pump with oxygen-eliminating device import, oxygen-eliminating device gas outlet by follow bad pipeline with
Drum import is connected.
Above-mentioned further includes sealing gland heater, and the sealing gland heater is arranged at condensator outlet.
Sealing gland heater above-mentioned is connected by return with steam turbine.
The beneficial effects of the present invention are: the present invention enables to the biomass boiler thermal efficiency to promote 3%；Flue gas of the present invention according to
It is secondary to drive steamer enough by preheater, single-stage combustion furnace, secondary firing furnace and heat-exchanging furnace, the waste heat of the high-temperature flue gas of discharge
Machine operation power generation, stability and reliability with higher, and heat-exchanging furnace heat exchanger effectiveness with higher, boiler are given
Water is first heated in economizer before entering drum, therefore reduces water supply in the heat absorption of heating surface, so that level-one economizer carrys out generation
For the higher evaporating heating surface of part cost, and since feed temperature improves, wall temperature difference will be reduced into drum, heat is answered
Power reduces accordingly, is able to extend drum service life；
Clean flue gas of the present invention after desulfurization, dedusting and denitrating technique enters in economizer, reduces exhaust gas temperature, reduces
Flue gas loss, simultaneously because flue gas is having already passed through desulfurization, dedusting and denitrating technique into flue tail, effective solution pot
The problem of furnace back-end ductwork dust stratification serious problems and flue-gas temperature are low, and heating surface be easy to cause low-temperature corrosion, reduces equipment
Loss and the cost of overhaul realize minimum discharge to the later period, meet the double requirements of economic development and environmental protection；
Steam after steam turbine acting power generation of the present invention returns to vapour through condenser condensation, sealing gland heater heat exchanging part high-temperature steam
The steam of turbine, the relatively low temperature of remaining condensation returns to drum after oxygen-eliminating device deoxygenation, is recycled, and saves water resource, meanwhile, gas
Envelope heater can also play the role of decompression.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of efficient waste heat electricity generation system, structure include as shown in Figure 1: combustion system, urosome processing unit,
Electricity generation system and cooling system, combustion system include preheater 1, single-stage combustion furnace 2, secondary firing furnace 3 and heat-exchanging furnace 4, in advance
The gas outlet of hot 1 air inlet of device connection boiler 5, the gas outlet of preheater 1 connects 2 air inlet of single-stage combustion furnace, in preheater 1
Air-introduced machine 6 is provided between 2 air inlet of gas outlet and single-stage combustion furnace, 2 gas outlet of single-stage combustion furnace connects secondary firing furnace 3
Air inlet, 3 gas outlet of secondary firing furnace connect 4 air inlet of heat-exchanging furnace, 4 gas outlet of heat-exchanging furnace and exhaust gas processing device 6 into
Port connection, exhaust gas processing device include desulfurizer 6-1, dust-extraction unit 6-2 and denitrification apparatus 6-3, and electricity generation system includes saving
Coal device 7, drum 8, evaporator 9, superheater 10, steam turbine 11 and the expansion power generator 12 being connect with steam turbine, economizer 7 into
Port is connected with the gas outlet of exhaust gas processing device 6, and 7 gas outlet of economizer is connected with 8 air inlet of drum, goes out in economizer
It is provided with heat exchanger between port and drum air inlet, which is shell-and-tube heat exchanger, the gas outlet of drum and evaporator
Air inlet is connected, and the gas outlet of evaporator is connected with the air inlet of superheater, superheater gas outlet and steam turbine air inlet
It is connected, cooling recirculation system includes condenser 13, sealing gland heater 14, condenser pump 15 and oxygen-eliminating device 16, the air inlet of condenser
Mouth is connected with steam turbine gas outlet, and condensator outlet is connected with sealing gland heater inlet, and sealing gland heater outlet passes through cold
Solidifying pump is connected with oxygen-eliminating device import, and oxygen-eliminating device gas outlet is connected by following bad pipeline with drum import, and sealing gland heater is logical
Return is crossed to be connected with steam turbine.
The present embodiment enables to the biomass boiler thermal efficiency to promote 3%；Flue gas of the present invention successively passes through preheater, level-one
Combustion furnace, secondary firing furnace and heat-exchanging furnace, the waste heat of the high-temperature flue gas of discharge drive enough steam turbine operation generate electricity, have compared with
High stability and reliability, and heat-exchanging furnace heat exchanger effectiveness with higher, boiler feedwater enter before drum first
It is heated in economizer, therefore reduces water supply in the heat absorption of heating surface, so that level-one economizer is higher to replace part cost
Evaporating heating surface, and since feed temperature improves, wall temperature difference will be reduced into drum, thermal stress reduces accordingly, energy
Enough extend drum service life；
Clean flue gas of the present embodiment after desulfurization, dedusting and denitrating technique enters in economizer, reduces exhaust gas temperature, subtracts
Few flue gas loss, simultaneously because flue gas is having already passed through desulfurization, dedusting and denitrating technique, effective solution into flue tail
The problem of boiler back end ductwork dust stratification serious problems and flue-gas temperature are low, and heating surface be easy to cause low-temperature corrosion, reduces and sets
Standby loss and the cost of overhaul realize minimum discharge to the later period, meet the double requirements of economic development and environmental protection；
Steam after the acting power generation of the present embodiment steam turbine is returned through condenser condensation, sealing gland heater heat exchanging part high-temperature steam
The steam of steam turbine, the relatively low temperature of remaining condensation returns to drum after oxygen-eliminating device deoxygenation, is recycled, and saves water resource, meanwhile,
Sealing gland heater can also play the role of decompression.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (7)
1. a kind of efficient waste heat electricity generation system, including combustion system, urosome processing unit, electricity generation system and cooling system, special
Sign is: the combustion system includes preheater, single-stage combustion furnace, secondary firing furnace and heat-exchanging furnace, the preheater air inlet
The gas outlet of the gas outlet of mouth connection boiler, the preheater connects single-stage combustion furnace air inlet, the single-stage combustion furnace outlet
The air inlet of mouth connection secondary firing furnace, secondary firing furnace gas outlet connects heat-exchanging furnace air inlet, the heat-exchanging furnace
Gas outlet is connect with exhaust gas processing device air inlet, and the electricity generation system includes economizer, drum, evaporator, superheater, steamer
Machine and the expansion power generator connecting with steam turbine, the economizer air inlet are connected with the gas outlet of exhaust gas processing device,
The economizer gas outlet is connected with drum air inlet, and the gas outlet of the drum is connected with evaporator air inlet, described
The gas outlet of evaporator is connected with the air inlet of superheater, and the superheater gas outlet is connected with steam turbine air inlet, institute
State steam turbine gas outlet connection cooling system.
2. efficient waste heat electricity generation system according to claim 1, it is characterised in that: in the gas outlet and one of the preheater
Air-introduced machine is provided between grade combustion furnace air inlet.
3. efficient waste heat electricity generation system according to claim 1, it is characterised in that: the exhaust gas processing device includes desulfurization
Device, dust-extraction unit and denitrification apparatus.
4. efficient waste heat electricity generation system according to claim 1, it is characterised in that: in the economizer gas outlet and drum
Heat exchanger is provided between air inlet, which is shell-and-tube heat exchanger.
5. efficient waste heat electricity generation system according to claim 1, it is characterised in that: the cooling recirculation system includes condensation
The air inlet of device, condenser pump and oxygen-eliminating device, the condenser is connected with steam turbine gas outlet, and condensator outlet passes through condenser pump
It is connected with oxygen-eliminating device import, oxygen-eliminating device gas outlet is connected by following bad pipeline with drum import.
6. efficient waste heat electricity generation system according to claim 5, it is characterised in that: further include sealing gland heater, the gas
Heater is sealed to be arranged at condensator outlet.
7. efficient waste heat electricity generation system according to claim 6, it is characterised in that: the sealing gland heater passes through loop pipe
Road is connected with steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629376.1A CN110345461A (en) | 2019-07-12 | 2019-07-12 | A kind of efficient waste heat electricity generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910629376.1A CN110345461A (en) | 2019-07-12 | 2019-07-12 | A kind of efficient waste heat electricity generation system |
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| Publication Number | Publication Date |
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| CN110345461A true CN110345461A (en) | 2019-10-18 |
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ID=68175907
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910629376.1A Pending CN110345461A (en) | 2019-07-12 | 2019-07-12 | A kind of efficient waste heat electricity generation system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201339497Y (en) * | 2009-01-15 | 2009-11-04 | 江苏东能环保能源科技有限公司 | Sintering surplus-heat power generating system with byproduct gas afterburning |
| CN202993868U (en) * | 2012-11-23 | 2013-06-12 | 广东开能环保能源有限公司 | Flue gas waste heat recovery for power generation system of closed electric furnace with vaporization flue |
| CN103344124A (en) * | 2013-07-17 | 2013-10-09 | 广州智光节能有限公司 | Lime kiln waste gas waste heat electricity generating system with by-product coal gas afterburning function |
| CN105973017A (en) * | 2016-06-30 | 2016-09-28 | 中冶华天工程技术有限公司 | Ring cooling machine exhaust gas waste heat comprehensive utilization system |
| CN206739251U (en) * | 2017-05-10 | 2017-12-12 | 冯宝平 | Industrial Boiler afterheat generating system |
-
2019
- 2019-07-12 CN CN201910629376.1A patent/CN110345461A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201339497Y (en) * | 2009-01-15 | 2009-11-04 | 江苏东能环保能源科技有限公司 | Sintering surplus-heat power generating system with byproduct gas afterburning |
| CN202993868U (en) * | 2012-11-23 | 2013-06-12 | 广东开能环保能源有限公司 | Flue gas waste heat recovery for power generation system of closed electric furnace with vaporization flue |
| CN103344124A (en) * | 2013-07-17 | 2013-10-09 | 广州智光节能有限公司 | Lime kiln waste gas waste heat electricity generating system with by-product coal gas afterburning function |
| CN105973017A (en) * | 2016-06-30 | 2016-09-28 | 中冶华天工程技术有限公司 | Ring cooling machine exhaust gas waste heat comprehensive utilization system |
| CN206739251U (en) * | 2017-05-10 | 2017-12-12 | 冯宝平 | Industrial Boiler afterheat generating system |
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Application publication date: 20191018 |
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| RJ01 | Rejection of invention patent application after publication |