CN204552981U - A kind of power station with fuel functions/drying starts auxiliary system - Google Patents
A kind of power station with fuel functions/drying starts auxiliary system Download PDFInfo
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- CN204552981U CN204552981U CN201520212386.2U CN201520212386U CN204552981U CN 204552981 U CN204552981 U CN 204552981U CN 201520212386 U CN201520212386 U CN 201520212386U CN 204552981 U CN204552981 U CN 204552981U
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a kind of power station with fuel functions/drying and start auxiliary system, comprise at least one generating internal-combustion engine, the flue gas that described generating internal-combustion engine is discharged enters exhaust heat boiler and in exhaust heat boiler, produces steam and enters steam header, steam in steam header enters in the dry heat-exchanger rig of coal for moisture-free coal, steam is lowered the temperature after condensation and is entered condensation water tank in the dry heat-exchanger rig of coal, the moisture be evaporated in coal enters return water tank in order to recycling, the steam entering steam header also can be used for the startup steam of coal-fired power station boiler when coal fired power plant starts, the electricity access electrical network that generating internal-combustion engine sends or the startup power supply as coal fired power plant black starting-up, the generating internal-combustion engine energy efficient had of discharge fume make use of by the utility model, adopts exhaust heat boiler to produce steam, and steam can be used for coal fired power plant and starts, and coal fired power plant does not need to arrange starting trouble in addition, decreases and invests and the wasting of resources.
Description
Technical field
The utility model relates to energy and power engineering technical field, is specifically related to a kind of power station with fuel functions/drying and starts auxiliary system.
Background technique
Existing coal fired power plant system also exists following technical disadvantages:
1. coal fired power plant generally need configure starting trouble, because power station needs to provide steam for deoxygenation to oxygen-eliminating device, provide steam turbine shaft seal vapour and boiler heating coil vapour etc. before starting, make the heat power equipment needed for coal fired power plant and pipeline preheating, damage e-quipment and pipe to avoid startup suddenly to cause the material thermal stress of e-quipment and pipe excessive.The general power of starting trouble is little, and utilization ratio is not high, and when power station is normally run, starting trouble generally leaves unused, and causes the waste of resource.And power of IC engine is relatively little, efficiency is high, and single cycle electric power plant with internal combustion engine efficiency generally about 43%, and during internal combustion engine start except can adopting steam heating startup, can also adopt electric heating to start, and installs and starts conveniently.
2. hydrogenous coal, such as brown coal moisture is generally greater than 20% even higher.Moisture in coal too high levels can cause burning of coal efficiency of utilization to decline.Have at present and adopt the technology of the stove drying brown coal of boiler of smoking, but smoke the balance that stove changes flow field in coal-fired power station boiler and air and gas system, what make the design and running of coal-fired power station boiler control to become is more complicated.And containing a large amount of dusts in the stove cigarette of extraction coal-fired power station boiler, the stove cigarette recirculation of extraction can increase the dust concentration of stove cigarette, thus can increase the wearing and tearing of coal-fired power station boiler.
3. hydrogenous coal is directly sent into hearth combustion and is not only made burning of coal efficiency of utilization decline, and also makes these moisture in coal all slattern.
4. generate electricity internal-combustion engine temperature of exhaust fume 350 to 400 DEG C, directly drains into air, cause serious energy waste.
Model utility content
For solving the deficiency that prior art exists, the utility model discloses a kind of power station with fuel functions/drying and start auxiliary system, the generating internal-combustion engine energy efficient had of discharging fume make use of by the utility model, while internal-combustion engine provides electric energy, absorb the heat of turbosupercharger smoke evacuation, adopt exhaust heat boiler to produce steam, steam can be used for coal fired power plant and starts, coal fired power plant does not need to arrange starting trouble in addition, decreases investment and the wasting of resources.
For achieving the above object, concrete scheme of the present utility model is as follows:
A kind of power station with fuel functions/drying starts auxiliary system, comprise at least one generating internal-combustion engine, the flue gas that described generating internal-combustion engine is discharged enters exhaust heat boiler and in exhaust heat boiler, produces steam and enters steam header, steam in steam header enters the dry heat-exchanger rig of coal for moisture-free coal, steam is lowered the temperature after condensation and is entered condensation water tank in the dry heat-exchanger rig of coal, the moisture be evaporated in coal enters return water tank in order to recycling, enter the startup steam of steam when coal fired power plant starts also for coal-fired power station boiler of steam header, the electricity that generating internal-combustion engine is sent by generator accesses electrical network or the startup power supply as coal fired power plant black starting-up.
Steam in described steam header enters the dry heat-exchanger rig of coal for moisture-free coal, coal dry in the dry heat-exchanger rig of coal sends into coal-fired power station boiler burning, the moisture that in the dry heat-exchanger rig of coal, coal is evaporated is under the effect of vacuum pump, enter after air cooled condenser is condensed into liquid water, enter return water tank in order to recycling.
Water in described condensation water tank enters exhaust heat boiler successively under the effect of exhaust heat boiler condensate pump, exhaust heat boiler oxygen-eliminating device and exhaust heat boiler feed water pump, recycles.
Steam in described steam header specifically pick to coal-fired power station boiler attached vapour point, coal fired power plant oxygen-eliminating device, the attached vapour point of steam turbine, the dry heat-exchanger rig of coal and other use vapour point.
Coal-fired power station boiler island comprises coal-fired power station boiler and the attached vapour point of coal-fired power station boiler, and coal fired power plant steam turbine island comprises steam turbine and the attached vapour point of steam turbine.Described coal-fired power station boiler attached vapour point refers to the necessary steam user of boiler startup, for the work of assistant coal station boiler, specifically different because of the boiler of various parameter, such as, before boiler startup heating coil vapour; Described steam turbine attached vapour point refers to that steam turbine starts necessary steam user, for the work of assistant coal power station steam turbine, specifically different because of the steam turbine of various parameter, such as steam turbine shaft seal heating vapour.The kind of startup vapour point is specifically because of the boiler of parameters, the Starting mode of steam turbine and different, and typical startup vapour is as heating coil vapour, the shaft seal heating vapour of steam turbine, the oxygen-eliminating device heating vapour of boiler.
Described exhaust heat boiler and the dry heat-exchanger rig inside of coal are provided with internal by-pass, and internal by-pass is realized by switching valve.
The electricity that described generating internal-combustion engine is sent by corresponding generator accesses electrical network or the startup power supply as coal fired power plant black starting-up, and described coal-fired power station boiler produces steam and enters in steam turbine, promotes steam turbine acting, drives corresponding electrical power generators.
Before coal-fired power station boiler and coal fired power plant steam turbine start, the steam that the exhaust heat boiler of described generating internal-combustion engine produces enters steam header, the steam picked out from steam header enters heat power equipment and the pipeline of preheating coal fired power plant in coal-fired power station boiler attached vapour point, oxygen-eliminating device, the attached vapour point of steam turbine, damages e-quipment and pipe to avoid startup suddenly to cause the material thermal stress of e-quipment and pipe excessive.Meanwhile, the electricity that the generator that described generating internal-combustion engine is corresponding sends can be accessed by station service, as startup power supply during coal fired power plant black starting-up.
The exsiccator pattern that exsiccator in the dry heat-exchanger rig of described coal adopts includes but not limited to revolver drier, steam pipe type exsiccator, fluidized bed dryer.
Described generating internal-combustion engine includes but not limited to high speed machine, medium speed engine and low-speed machine.
Described generating internal-combustion engine adopts liquid fuel or gaseous fuel.
The power station with fuel functions/drying starts a method of work for auxiliary system, comprises the following steps:
Step one: generating internal-combustion engine adopts electricity to start or activated vapor, produces electric energy, electricity consumption or the startup power supply as coal fired power plant black starting-up when starting for coal fired power plant;
Step 2: exhaust heat boiler comes into operation, the flue gas that in generating internal-combustion engine, turbosupercharger is discharged enters exhaust heat boiler, and exhaust heat boiler absorbs flue gas heat and produces steam;
Step 3: steam enters steam header, a steam part is heating fuel coal in the dry heat-exchanger rig of coal, after bunker coal is heated, moisture in coal evaporates, thus obtaining drying, the moisture that in the dry heat-exchanger rig of coal, coal is evaporated, under the effect of vacuum pump, enters after air cooled condenser is condensed into water, enter return water tank, steam is lowered the temperature after condensation and is entered condensation water tank in the dry heat-exchanger rig of coal; Another part steam serves as coal fired power plant startup steam used;
Step 4: coal fired power plant starts, dried coal sends into coal-fired power station boiler burning, and coal-fired power station boiler island produces steam, and steam is sent into coal fired power plant and used steam turbine island, promotes steam turbine acting, and drive electrical generators generating.
In described step 3, coal-fired power station boiler attached vapour point, the attached vapour point of steam turbine, coal fired power plant oxygen-eliminating device is included but not limited to vapour point, specifically because of the boiler of parameters, the Starting mode of steam turbine and different, the heating coil vapour of typical startup vapour as boiler, the shaft seal heating vapour, oxygen-eliminating device heating vapour etc. of steam turbine.
The beneficial effects of the utility model:
1. coal fired power plant does not need to arrange starting trouble in addition, decreases investment and the wasting of resources; And coal fired power plant black starting-up can be realized, do not need external electrical network to fall power transmission, the power station project for islet operation is significant.
2. achieve the drying of hydrogenous coal, coal-fired power station boiler efficiency is improved, and do not need to carry out particular design to coal-fired power station boiler, decrease coal-fired power station boiler investment; Do not need during operation to carry out complicated control to coal-fired power station boiler, decrease the complexity run and control.
3. reclaimed the moisture in hydrogenous coal, the recyclable recycling of these moisture, significant for water-deficient area.
4. achieve the cascade utilization of internal-combustion engine smoke discharging residual heat, decrease the waste of energy.
Accompanying drawing explanation
Fig. 1 overall structure schematic diagram of the present utility model;
In figure, 1, generating internal-combustion engine, 2, turbosupercharger, 3, admission air silencer, 4, air intake filter, 5, the dry heat-exchanger rig of coal, 6, exhaust heat boiler, 7, chimney, 8, generating internal-combustion engine generator, 9, coal-fired power station boiler island, 10 coal-fired power station boiler chimneys, 11, coal yard, 12, coal fired power plant uses steam turbine island, 13, steam turbine generator, 14, the attached vapour point of coal-fired power station boiler, 15, coal fired power plant oxygen-eliminating device, 16, the attached vapour point of steam turbine, 17, steam header, 18, exhaust heat boiler feed water pump, 19, exhaust heat boiler oxygen-eliminating device, 20, exhaust heat boiler condensate pump, 21, exhaust heat boiler condensation tank, 22, vacuum pump, 23, exsiccator, 24, first switching valve, 25, air cooled condenser, 26, return water tank, 27, the piston cylinder of internal-combustion engine, 28, intercooler, 29, heat recovery heat exchanger, 30, second switching valve, 31, other use vapour point.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 1, a kind of power station with fuel functions/drying starts auxiliary system, air enters the turbosupercharger 2 of generating internal-combustion engine 1 successively through air intake filter 4, admission air silencer 3, turbosupercharger 2 is connected with intercooler 28, turbosupercharger 2 is also connected with the piston cylinder 27 of internal-combustion engine, intercooler 28 is connected with the piston cylinder 27 of internal-combustion engine, generating internal-combustion engine 1 is connected with generating internal-combustion engine generator 8, generating internal-combustion engine generator 8 is connected with electrical network, and described electrical network comprises the station service electrical network of power plant's external electrical network and power plant inside.Generating internal-combustion engine 1 comprises turbosupercharger 2, the piston cylinder 27 of internal-combustion engine and intercooler 28, and flue gas is out discharged to outside generating internal-combustion engine 1 through turbosupercharger 2 from the piston cylinder 27 of internal-combustion engine.
The flue gas that turbosupercharger 2 is got rid of enters the heat recovery heat exchanger 29 of exhaust heat boiler 6, and exhaust heat boiler 6 is also provided with internal by-pass, and internal by-pass is realized by the second switching valve 30, the steam that heat recovery heat exchanger 29 produces enters steam header 17, a steam part in steam header 17 enters the exsiccator 23 of the dry heat-exchanger rig 5 of coal, another part is used for the startup of coal-fired power station boiler, specifically enter the attached vapour point 14 of coal-fired power station boiler, coal fired power plant oxygen-eliminating device 15, the attached vapour point 16 of steam turbine and other are with vapour point 31, coal-fired power station boiler vapour point 14 is the supplementary equipment on coal-fired power station boiler island 9, the attached vapour point 16 of steam turbine is for providing steam for coal fired power plant steam turbine island 12, coal fired power plant steam turbine drives steam turbine generator 13 generate electricity and access electrical network.
Coal in coal yard 11 is dry in the exsiccator 23 of the dry heat-exchanger rig 5 of coal, and steam is lowered the temperature after condensation and entered exhaust heat boiler condensation tank 21 in the dry heat-exchanger rig 5 of coal.Brown coal dry in the dry heat-exchanger rig 5 of coal are sent into coal-fired power station boiler island 9 and are burnt.Steam heat release in the dry heat-exchanger rig 5 of coal, heating brown coal, after brown coal are heated, the moisture evaporation contained by brown coal, thus realize the effect of brown coal drying.The moisture be evaporated in brown coal is under the effect of vacuum pump 22, and enter after air cooled condenser 25 is condensed into water, enter return water tank 26 in order to recycling, non-condensible gas enters air.The dry heat-exchanger rig 5 of coal is also provided with internal by-pass, and internal by-pass is realized by the first switching valve 24.
Water in exhaust heat boiler condensation tank 21 enters exhaust heat boiler 6 through exhaust heat boiler condensate pump 20, exhaust heat boiler oxygen-eliminating device 19 and exhaust heat boiler feed water pump 18 successively, recycles.The flue gas got rid of through exhaust heat boiler 6 enters air through chimney 7, and the flue gas that coal-fired power station boiler island 9 is discharged enters air through coal-fired power station boiler chimney.
Generating internal-combustion engine 1 had energy efficient of discharging fume make use of by the utility model, while generating internal-combustion engine 1 provides electric energy, absorbs the heat that turbosupercharger 2 is discharged fume, and adopts exhaust heat boiler 6 to produce steam.The electricity that generating internal-combustion engine 1 is sent by generator or the startup power supply as coal fired power plant black starting-up.
After steam enters steam header 17, a part is used for drying brown coal, and steam is lowered the temperature after condensation and entered exhaust heat boiler condensation tank 21 in the dry heat-exchanger rig 5 of coal.Brown coal dry in the dry heat-exchanger rig 5 of coal are sent into coal-fired power station boiler island 9 and are burnt.
Steam heat release in the dry heat-exchanger rig 5 of coal, heating brown coal, after brown coal are heated, the moisture evaporation contained by brown coal, thus realize the effect of brown coal drying.The moisture be evaporated in brown coal is under the effect of vacuum pump 22, and enter after air cooled condenser 25 is condensed into water, enter return water tank 26 in order to recycling, non-condensible gas enters air.
In exhaust heat boiler 6, change thermogenetic steam, another part is used for the startup steam on coal-fired power station boiler island 9, as heating coil vapour, the shaft seal heating vapour of steam turbine, the oxygen-eliminating device heating vapour of boiler.Exhaust heat boiler 6 inside is provided with internal by-pass, and when not needing to produce steam, flue gas without exhaust heat boiler 6 heat exchange, can directly enter rear portion flue from internal by-pass.
Coal-fired power station boiler island 9 of the present utility model adopts hydrogenous coal, and such as brown coal are as fuel.Generating internal-combustion engine 1 adopts liquid fuel or gaseous fuel.Coal fired power plant startup vapour point includes but not limited to coal-fired power station boiler attached vapour point 14, the attached vapour point 16 of steam turbine, coal fired power plant oxygen-eliminating device 15, specifically because of the boiler of parameters, the Starting mode of steam turbine and different, typical startup vapour is as heating coil vapour, the shaft seal heating vapour of steam turbine, the oxygen-eliminating device heating vapour of boiler.
A kind of power station with fuel functions/drying starts auxiliary system operationally, boot sequence:
1. the internal-combustion engine 1 that generates electricity adopts electricity to start or activated vapor, produces electric energy, electricity consumption or the startup power supply as coal fired power plant black starting-up when starting for coal fired power plant;
2. exhaust heat boiler 6 comes into operation, and produces steam;
3. a steam part enters in the dry heat-exchanger rig 5 of coal, makes bunker coal obtain drying; Another part steam serves as coal fired power plant startup steam used, includes but not limited to heating coil vapour, the shaft seal heating vapour of steam turbine, the oxygen-eliminating device heating vapour of typical startup vapour as boiler with vapour point;
4. coal fired power plant starts.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (9)
1. a power station with fuel functions/drying starts auxiliary system, it is characterized in that, comprise at least one generating internal-combustion engine, the flue gas that described generating internal-combustion engine is discharged enters exhaust heat boiler and in exhaust heat boiler, produces steam and enters steam header, steam in steam header enters the dry heat-exchanger rig of coal for moisture-free coal, steam is lowered the temperature after condensation and is entered condensation water tank in the dry heat-exchanger rig of coal, the moisture be evaporated in coal enters return water tank, enter the startup steam of steam when coal fired power plant starts also for coal-fired power station boiler of steam header, generating internal-combustion engine is by electrical power generators access electrical network or the startup power supply as coal fired power plant black starting-up.
2. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1, it is characterized in that, steam in described steam header enters the dry heat-exchanger rig of coal for moisture-free coal, coal dry in the dry heat-exchanger rig of coal sends into coal-fired power station boiler burning, the moisture that in the dry heat-exchanger rig of coal, coal is evaporated is under the effect of vacuum pump, enter after air cooled condenser is condensed into water, enter return water tank in order to recycling.
3. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1, it is characterized in that, water in described condensation water tank enters exhaust heat boiler through exhaust heat boiler condensate pump, exhaust heat boiler oxygen-eliminating device and exhaust heat boiler feed water pump successively, recycles.
4. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1 or 2, it is characterized in that, the steam in described steam header is specifically picked to the dry heat-exchanger rig of coal-fired power station boiler attached vapour point, coal fired power plant oxygen-eliminating device, the attached vapour point of steam turbine and coal.
5. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1, it is characterized in that, described exhaust heat boiler and the dry heat-exchanger rig inside of coal are provided with internal by-pass, and internal by-pass is realized by switching valve.
6. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1, it is characterized in that, described coal-fired power station boiler produces steam and enters in steam turbine, promotes steam turbine acting, drives corresponding electrical power generators.
7. a kind of power station with fuel functions/drying as described in claim 1 or 5 starts auxiliary system, it is characterized in that, the exsiccator pattern that the exsiccator in the dry heat-exchanger rig of described coal adopts includes but not limited to revolver drier, steam pipe type exsiccator, fluidized bed dryer.
8. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1, and it is characterized in that, described generating internal-combustion engine includes but not limited to high speed machine, medium speed engine and low-speed machine.
9. a kind of power station with fuel functions/drying starts auxiliary system as claimed in claim 1, and it is characterized in that, described generating internal-combustion engine adopts liquid fuel or gaseous fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520212386.2U CN204552981U (en) | 2015-04-09 | 2015-04-09 | A kind of power station with fuel functions/drying starts auxiliary system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520212386.2U CN204552981U (en) | 2015-04-09 | 2015-04-09 | A kind of power station with fuel functions/drying starts auxiliary system |
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| CN204552981U true CN204552981U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520212386.2U Expired - Fee Related CN204552981U (en) | 2015-04-09 | 2015-04-09 | A kind of power station with fuel functions/drying starts auxiliary system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791130A (en) * | 2015-04-09 | 2015-07-22 | 山东电力工程咨询院有限公司 | Power station starting auxiliary system with fuel drying function and working method |
| 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 |
-
2015
- 2015-04-09 CN CN201520212386.2U patent/CN204552981U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791130A (en) * | 2015-04-09 | 2015-07-22 | 山东电力工程咨询院有限公司 | Power station starting auxiliary system with fuel drying function and working method |
| 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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Granted publication date: 20150812 Termination date: 20180409 |
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