CN1167524A - Method in PFBC-power plant and topping combustor device of such plant - Google Patents
Method in PFBC-power plant and topping combustor device of such plant Download PDFInfo
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- CN1167524A CN1167524A CN96190840A CN96190840A CN1167524A CN 1167524 A CN1167524 A CN 1167524A CN 96190840 A CN96190840 A CN 96190840A CN 96190840 A CN96190840 A CN 96190840A CN 1167524 A CN1167524 A CN 1167524A
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- room
- air
- gas
- district
- extended furnace
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- 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
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/14—Gas-turbine plants characterised by the use of combustion products as the working fluid characterised by the arrangement of the combustion chamber in the plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
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- 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
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/205—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products in a fluidised-bed combustor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
- F23C7/06—Disposition of air supply not passing through burner for heating the incoming air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Incineration Of Waste (AREA)
Abstract
A topping combustor (7) of a PFBC-power plant comprises a first room (22) arranged to conduct flue gases from the combustor of the power plant through the topping combustor. Means (8) are arranged for supplying fuel gases to the topping combustor as well as at least a burner (28) is arranged to cause a combustion of the fuel gases in the topping combustor for mixing the gases resulting therefrom with said flue gases for increasing the temperature thereof. The topping combustor further comprises at least one second room (27) located beside the first room and by that separated from said flow. Said means are arranged to supply the fuel gases to the second room, and the burner (28) is arranged to cause a combustion of these fuel gases in a first zone (29) of the topping combustor located within the second room. The application also relates to a method for increasing the temperature of flue gases from the combustor of a PFBC-power plant, using the topping combustor described above.
Description
Invention field and prior art
The present invention relates to a kind of extended furnace device (topping combustor device), this device is brought up to the temperature that makes its this power plant's gas-turbine of suitable work promote gas with the temperature of the vapor plume that PFBC power plant main combustion chamber produces, described extended furnace comprises first Room with entrance and exit, so that described flue gas stream passes through the extended furnace, described device comprises fuel gas is added the device of extended furnace and the burner that at least one disposed, so that fuel gas is burnt in the extended furnace, thereby the gas that makes its generation mixes with described vapor plume and improves its temperature, the invention still further relates to a kind of method of this described effluent gas temperature of class power plant of raising as described in the preamble according to claims 1.
This class device is known by the patent application 458955 that for example Switzerland announces.When the main combustion chamber of this class power plant burns, produce temperature and be about 850-950 ℃ vapor plume, be i.e. the gas that burning produces.If these vapor plumees are directly supplied with the gas-turbine of PFBC power plant, these gas-turbines just will be accepted the promotion gas of about this temperature.Owing to be subjected to this restriction chemically, can not obtain higher temperature.If further elevated temperature, sintering will take place in this bed.Because the power of gas-turbine significantly increases with the raising that promotes gas temperature, the temperature reality that requires to promote gas so that partly obtain high-output power at the gas-turbine of power plant, and obtains higher power plant's total efficiency up to 1200-1500 ℃ thus.Dispose this preposition burning for this reason, reach desired level so that gas-turbine promotes the temperature of gas so the purpose of preposition burning is the temperature that improves the vapor plume of power plant's main combustion chamber generation.
If make the temperature of extended furnace improve the NO of power plant emission
xConcentration just is increased to unacceptable danger.This class one type of prior art syringe at least under some operational condition, particularly under the condition of power plant's low-load, the NO of discharging
xConcentration is too high, this is that the oxygen content of vapor plume is higher, when fuel gas burns in the presence of oxygen because in these cases, because containing the N composition and can react under the very high temperature (＞2000 ℃) that this burning produces usually in oxygen and the fuel is so generate the NO of high-load
x
Summary of the invention
The apparatus and method that the purpose of this invention is to provide a kind of the above-mentioned type have found a kind of simple solution for the problems referred to above the present invention in this class known devices and the method.
According to the present invention, the realization of this purpose is that the extended furnace by this class device comprises second Room that at least one is positioned at next door, first Room and therefore separates with described air-flow, with the device that fuel gas is added second Room of configuration, and the burner of configuration makes these fuel gas burn in first district that is arranged in this second indoor extended furnace.
Because fuel gas burns in the chamber that the flue gas stream with the main combustion chamber generation separates, oxygen content in the flue gas stream to the burning in described first district, carried out at all without any influence, this means, under various operational conditions, remaining on has constant lower oxygen content in the fuel gas of being made up of fuel and AIR MIXTURES, so that fuel gas produces the least possible NO when high-temp combustion
xBe possible.Combustion gas are that flame burning can take place to form outside described first Room in another advantage of burning outside the flue gas stream, therefore without any need for the complex measures that makes flame holding, if flame burning is arranged, then need to make flame holding in flue gas stream.
First embodiment preferred according to the present invention, configuration adds described fuel gas in the device of second Room, wherein to make its burning in first district be incomplete (Sub-stoichiometric) for fuel and Air mixing ratio, so that the gas that burning is produced contains unburned fuel, when described the mixing takes place with the flue gas stream that is positioned at first indoor second district in them, just with these air-flows in contained oxygen react.By guaranteeing that all the time fuel is at the described second indoor partial combustion, promptly at O
2This fact of burning under the not enough condition is although the NO of temperature very high (＞2000 ℃) generation when in first district flame combustion being arranged
xAmount seldom.In other words, as excessive O
2When existing, under high like this temperature, burn, can cause a large amount of NO
xGeneration.Because described first district is positioned at outside the flue gas stream, so this favourable partial combustion always can guarantee NO
xGeneration be not subjected to the influence of power plant load.The partial combustion of fuel can cause unburned fuel in described first Room with flue gas stream in the oxygen generation heating type oxidation reaction that exists, this reaction does not produce any flame, so temperature is more much lower than the temperature that flame combustion is arranged, so the No that in second district, is produced
xContent also very low.
Another embodiment preferred according to the present invention, burner for described type, be that ABB has Patent right EV-type burner, be fuel gas to be added on the airintake direction wall convergence can produce the space of eddy current, and air is added in the zone outside the appreciable described wall end on the described direction.Owing to indoorly adopted this burner, so when the described first district internal combustion, air has reached fabulous mixing with fuel second.This has prolonged the waiting time of fuel gas in first district, and consequently the N composition changes into NO in the fuel
xConversion ratio reduce significantly in short-term than the waiting time.
The 3rd embodiment preferred according to the present invention, this second Room are air-flow that described fuel gas produces and flue gas stream by first Room to be laterally enter this chamber.Because being, the direction of described air-flow and flue gas stream laterally enter this chamber, so the hot air flow that second Room produces can mix with flue gas stream immediately, and guarantee to contact with residue oxygen in the flue gas stream from inflammable gas molecule in the air-flow of second Room, so that the heating type oxidation reaction takes place in described second district.
The 4th embodiment preferred according to the present invention, disposing described second Room is to make described air-flow enter this chamber with the direction that is substantially perpendicular to flue gas stream in first Room.The direction of described air-flow and flue gas stream is this flows at angles, makes two kinds of air-flows mix very goodly, thereby has above-mentioned advantage.
The 5th embodiment preferred according to the present invention, this device comprise that the gas that the burning of first district is produced that is disposed is being evenly distributed in the device that adds this chamber on the each point on every side of first Room basically.Therefore, the mixing of these two kinds of air-flows is further strengthened and mixes.
The 6th embodiment preferred according to the present invention, this device comprises a plurality of second Room, wherein each all has a burner, and these chambers are configured in around tubulose first Room basically evenly distributedly.So just can realize last embodiment in a kind of simply and easily mode.
The 7th embodiment preferred according to the present invention disposes and described fuel gas added the device of second Room, thereby makes these gases have the overvoltage that surpasses the flue gas stream pressure that enters described first Room.Because this pressure reduction between second Room and first Room, the gas that is produced in the burning of first district just can mix with the flue gas stream in second district fully by its kinetic energy that has.
The 8th embodiment preferred according to the present invention, this device comprises the device that air is added the 3rd district, first Room in the regional downstream that is positioned at the described mixing of predetermined generation, and wherein contained flammable medium burnouts so that described air mixes with mixed airflow.Since add these air in the 3rd district, remaining flammable medium in the mixed airflow that can finally burnout, and before air-flow is supplied with gas-turbine as promotion gas, pass through O
2With NO
xReaction makes hazardous compound still less, can make No in the air-flow
xContent further reduce.
Another embodiment preferred according to the present invention, described air feeder comprises the lane device that is disposed, air is flowed outside the wall in first and second districts, extended furnace and along this wall, make these wall coolings simultaneously before entering the 3rd district, first Room so that air was heated.Air is by being heated with the described wall this mode that interacts, and this can strengthen the final firing effect in described the 3rd district, provides necessary cooling to described wall simultaneously.
Another embodiment preferred according to the present invention, the immediate access of the export mixes gas-turbine of extended furnace, this makes the extended furnace simple with the combination of gas-turbine, but also can avoid promoting between extended furnace and the gas-turbine thermal loss of gas without a doubt.
According to method of the present invention according to the above-mentioned type, make the second Room first district internal combustion of with first Room separating of fuel gas in the extended furnace, make described vapor plume flow through the extended furnace by first Room.The advantage of this method is with identical to the above-mentioned advantage of independent claims of device.
Other advantages of the present invention can be from hereinafter and other relevant statement showing with advantageous feature.
The accompanying drawing summary
Continue to describe the specific embodiments of enumerating as embodiment of the present invention with reference to the accompanying drawings.
In the accompanying drawings:
Fig. 1 illustrates the PFBC power plant that gas and vapor recycle (latter is not shown) are combined with flow chart, and extended furnace wherein disposes according to the present invention.
Fig. 2 is the partial cross section's flow chart according to the device of the preferred embodiment of the invention.
Fig. 3 is the front view with Fig. 2 device of part section.
The detailed description of the preferred embodiment of the invention
In order to illustrate that how the power plant comprising the granular fuel that promptly burns according to the PFBC power plant of device of the present invention realizes, narrates this class power plant briefly referring now to Fig. 1 in pressurised fluidized bed.
This power plant comprises firing chamber 1, and this firing chamber is installed in the pressurized container 2, and the main combustion chamber volume is about 10
4m
3And can be pressurized to for example about 16 crust.To be used for firing chamber 1 pressurization and make the fluidised pressurized air 3 of this indoor bed add these pressurized containers.Pressurized air is by adding this firing chamber at the unshowned fluidisation nozzle in bottom, firing chamber, so that be encapsulated in the bed fluidization in this firing chamber.This is by bed material, granular absorbent and granular fuel mix, and this fuel burns in the fluidization air that adds this.The vapor plume 4 of this generation is added into purification plant 5, and in this embodiment, purification plant is by forming for the high-temperature filter that is used for high pressure.Vapor plume is by entering extended furnace 7 after the intermediate stop valve 6, and the structure of this chamber is an object of the present invention, and with reference to Fig. 2 and 3 it is done narration further.Fuel gas can add extended furnace 7 by filter 10 by the pipeline 8 of known type vaporizer 9.Fuel gas is being supplied with compressed-air actuated extended furnace internal combustion by pipeline 11 by high pressure compressor 12, and mix with the vapor plume of firing chamber 1, to improve the temperature of vapor plume, the temperature (1200-1500 ℃) of consequently leaving the gas of extended furnace makes these gases very be fit to do to drive the promotion gas of high pressure air turbine 13.By the extended furnace, the temperature of described vapor plume is brought up to 1200-1500 ℃ from about 850-950 ℃.
High pressure air turbine and high pressure compressor and generator 14 are configured on the same axle, can obtain useful energy from generator.High pressure compressor 12 also with pressurized air by pipeline 11 input PFBC-firing chambers 1, to this with reference to Fig. 2 narration it seems can be clearer.Intermediate stop valve 15 is configured between high pressure compressor and the firing chamber 1.The air input vaporizer 9 that high pressure compressor also will be used to gasify by pipeline 16.Fuel also can be rock gas, can save vaporizer like this.
The gas that expands in high pressure air turbine 13 enters low pressure gas turbine 17.The waste gas that leaves the low pressure gas turbine still contains energy, and these energy are handled by economizer 18.Low pressure compressor 19 can also be configured on the axle of low pressure gas turbine, provide atmospheric air for it by filter 20.Therefore low pressure compressor is driven by the low pressure gas turbine, provides first order pressurized air from its outlet for high pressure compressor 12.Between low pressure compressor and high pressure compressor, dispose interstage cooler 21, enter the temperature of the air of high pressure compressor 12 inlets with reduction.
Referring now to the preferred embodiment of Fig. 2 narration according to extended furnace of the present invention.Extended furnace 7 comprises tubulose first Room 22, this chamber has the inlet 23 and the outlet 25 that is positioned at the opposite end from the vapor plume 24 of PFBC-power plant main combustion chamber 1, the immediate access 26 of this export mixes high pressure air turbine 13 leads to the high pressure air turbine axis vertical with the longitudinal shaft of described first Room to the extension.
The extended furnace comprises a plurality of second Room 27 (being 4) in this figure, they are being evenly distributed on the same level of vapor plume 24 flow directions around first Room, therefore the direction of these second Room to first Room radially, and in configuration, they separate with the flue gas stream that enters the extended furnace.Each second Room 27 all is equipped with burner 28, in configuration, makes the compressed fuel gas from vaporizer 9 add burner by pipeline 8.Preferred carbon of fuel wherein or oil.Burner 28 is EV types, be about to fuel gas and be added in that the wall expansion can produce in the chamber of eddy current on the air feed direction, and the air that will be used to burn is added in the zone on described direction after these wall ends.Be bordering on mixing completely so that it is reached, described eddy current disappears in first district 29 of second Room that is used for fuel gas.To further narrate how to add air, but, press the oxygen quantity not sufficient and add air, so that the flame combustion that has in 29 generations of first district is a partial combustion under very high temperature (＞2000 ℃), whereby with NO with respect to the burning capacity that adds
xGeneration remain on low-level.The gas that fuel gas and air good mixing in first district 29 produces burning has the long waiting time in second Room, this is to NO
xGeneration produce very adverse influence, promptly reduced NO
xGeneration.Therefore the whole oxygen that add all are used for burning basically, have only the oxygen of minute quantity to consume in NO
xGeneration.
Because the pressure that adds the fuel gas of second Room 27 is higher than the pressure of the first Room flue gas stream, so the gas that is produced in described first district, 29 burnings can be owing to its very high kinetic energy flows in the flue gas stream 24 of first Room, thereby effective mixing takes place.The air-flow of second Room at a certain angle, enter to preferred vertical in the air-flow of first Room and the each point of the air-flow of second Room 27 around being evenly distributed on first Room basically on add that the efficient to this mixing has promoting effect in the flue gas stream of this chamber.
Like this, the vapor plume 24 that firing chamber 1 produces is mixed with the gas that burns generation in first district 29 being positioned at the first second indoor district 30, extended furnace, and still not have remaining oxygen in burnt fuel and the flue gas 24 not have flame and temperature be about 1200-1300 ℃ heating type oxidation thereby make.The lower temperature of this reaction makes the NO of generation
xAlso few.
Configuration high pressure compressor 12 adds first Room 22, extended furnace with pressurized air by the lane device that comprises the Twin channel part that extends in parallel, enter the 3rd district 31 in the downstream of being seen on the flue gas stream direction that is located at second district 30, the first passage 32 of configuration in the Twin channel makes the inwall 30 of air and extended furnace leave certain distance to flow through the zone that enters first district by the 3rd district, and enter the second channel 34 that is disposed therefrom, air is returned between first passage and described locular wall 33 enter the 3rd district.Because air is along the conductive force of inwall 33, air was preheated before arriving the 3rd district 31.Some air is transfused to the zone of the burner 28 in first district 29 in the transition zone from the first passage to the second channel, so high pressure compressor 12 provides air to first district and the 3rd district.The flammable medium that still is contained in the air-flow finally burns in the 3rd district, another part oxygen of adding then can with NO
xReaction generates the littler compound of other harm, thereby further reduces NO
xContent.Because the merit that drops into power plant can be farthest reclaimed in above-mentioned final burning, and utilize it to promote gas-turbine 13.When the energy one that adds fuel regularly can be by almost being that the air stream that will flow out from the extended furnace that burns completely is reduced to minimum, thereby also can make the size of gas-turbine be reduced to minimum.The length overall that contains the first Room part in the second and the 3rd district in fact preferably surpass to constitute 1.5 times of diameter of the pipeline section of first Room.Flow air is in order to the locular wall of cooling chamber 22 and 27 in passage 34.
Though the locular wall around the extended furnace 7 is columnar in fact substantially, for clarity, has omitted these locular walls in Fig. 2.The locular wall 35 of extended furnace is surrounded by outer wall 36, the pressurized air of being sent into power plant firing chamber 1 by high pressure compressor flows through the extended furnace along some parts by double shells 37 and enters firing chamber 1 in described outer wall, thereby makes extended furnace's wall obtain good cooling.
7 the inlet configuration intermediate stop valve 6 in the extended furnace, and in the pipeline 38 between high pressure compressor and firing chamber 1, configuration intermediate stop valve 15 between the described outer wall 36 of extended furnace and inwall 36.Can regulate intermediate stop valve 6 and close the inlet of preposition burner, in case and when plant shutdown, the vapor plume of extended furnace and firing chamber 1 bulkiness is isolated, exceed the speed limit and therefore cause the damage of rotor 12,13 and 14 avoiding.In addition, also can firing chamber 1 and high pressure compressor be separated, so that the burning in the firing chamber 1 of slowing down effectively by valve 15.
The outward appearance of extended furnace's actual device that Fig. 2 is illustrated is shown in Fig. 3.Intermediate stop valve 39 is set directly is connected with the extended furnace, this simple suitable design is attractive especially.Obviously, the air outlet slit hole 40 in the 3rd district closely be configured in whole extended furnace pipeline section around.
Certainly, the present invention in no case is only limited to above-mentioned embodiment preferred, but for a person skilled in the art basic design of the present invention is not obviously all left in many improvement of embodiment.
Claims (22)
1. the temperature with the vapor plume of PFBC power plant main combustion chamber (1) generation is brought up to and is made it be fit to do the method for temperature that this power plant's gas-turbine (13) promotes gas, wherein vapor plume is added extended furnace (7), fuel gas is added extended furnace's burning, then the gas that produces is mixed with described vapor plume to improve the temperature of vapor plume, the burning that it is characterized in that fuel gas is to carry out in first district (29) of second Room, extended furnace (27), second Room is what to separate with first Room (22) of extended furnace, flows into the extended furnace by the described vapor plume in first Room.
2. the method for claim 1, it is characterized in that fuel gas is added second Room (27), it is incomplete that wherein contained fuel and Air mixing ratio make its burning in first district (29), and with after flue gas stream by first Room (22) mixes, the contained oxygen of the former contained unburned fuel and the flue gas stream that is arranged in first indoor second district (30) is reacted at the gas that is produced.
3. claim 1 or 2 method is characterized in that making gas and the described flue gas stream that burning is produced in first district (29) to be in the flue gas stream of horizontal inflow first Room (22).
4. each method among the claim 1-3 is characterized in that making the gas that produces in first district (29) burning being evenly distributed in basically and adds this chamber on the each point on every side of first Room (22).
5. each method among the claim 1-4, it is characterized in that air is added the downstream of the relative flue gas stream direction that is predefined in (22) second districts (30), first Room that described mixing wherein takes place, and air is mixed with mixed airflow there with the wherein remaining flammable medium of burning.
6. the temperature of the vapor plume that PFBC power plant main combustion chamber (1) is produced is brought up to and is made it be fit to do extended furnace's device that this power plant's gas-turbine (13) promotes the temperature of gas, described extended furnace comprises first Room (22) with entrance and exit, so that described flue gas stream passes through the extended furnace, this device comprises the device (8 that adds fuel gas to the extended furnace, 9) and at least one of configuration make fuel gas burner (28) in extended furnace burning, the gas of its generation is mixed with described vapor plume to improve the temperature of vapor plume, it is characterized in that the extended furnace comprises second Room (27) that at least one is positioned at first Room (22) next door and therefore separates with described air-flow, its feature also is to dispose described device fuel gas is added second Room, and configuration burner (28) makes these fuel gas be arranged in second indoor first district, extended furnace (29) burning.
7. the device of claim 6, it is characterized in that disposing described device described fuel gas is added second Room (27), wherein to make its burning in first district (29) be incomplete for fuel and Air mixing ratio, so that the gas that burning produces contains unburned fuel, when described the mixing takes place with the air-flow that is positioned at (22) second districts (30), first Room in these gases, these unburned fuels just with flue gas stream in contained oxygen react.
8. claim 6 or 7 device, the burner (28) that it is characterized in that described type are fuel gas to be added in the wall expansion can produce the space of eddy current on the air feed direction, and air is added in the zone outside the appreciable described wall end on the described direction.
9. each device among the claim 6-8 is characterized in that disposing second Room (27) and makes gas that described fuel gas produces and flue gas stream by first Room be horizontal inflow first Room (22).
10. the device of claim 9 is characterized in that disposing the flue gas stream (24) that second Room (27) is substantially perpendicular in first Room (22) described air-flow and enters first Room.
11. the device of claim 9 or 10 is characterized in that disposing direction that second Room (27) makes described air-flow basically facing to the center of flue gas stream in first Room (22).
12. each device among the claim 6-11 is characterized in that this device is included as burning is produced in first district (29) gas to be evenly distributed in basically add the device that this chamber disposed on the each point on every side of first Room (22).
13. the device of claim 12 is characterized in that this device comprises a plurality of second Room (27), wherein each all has a burner (28), its feature also be these chambers be configured in equably basically tubulose first Room (22) around.
14. each device among the claim 6-13 is characterized in that disposing and described fuel gas is added the device (8,9) of second Room (27), adds described first Room (22) with the overvoltage gas that these is had above flue gas stream pressure.
15. each device among the claim 6-14, it is characterized in that this device also comprises the device (12,32 and 34) that air is added the 3rd district, first Room (22) (31) that is positioned at downstream, second district (30), be predefined in the 3rd district described mixing takes place, so that described air mixes with mixed airflow, wherein contained flammable medium is burnouted.
16. the device of claim 15, it is characterized in that described air adding apparatus comprises the lane device (32 that is disposed, 34) air is flowed outside the locular wall (33) in first and second districts, extended furnace and along this wall, make these walls coolings simultaneously so that air is heated in first Room that enters the 3rd district (31) before.
17. the device of claim 16, it is characterized in that lane device comprises the Twin channel part that extends in parallel, the first passage (32) of configuration in the Twin channel makes air and described wall leave certain distance to flow through the zone that enters first district (29) by the 3rd district (31), and enter the second channel (34) that is disposed therefrom, air is returned between first passage and described locular wall enter the 3rd district.
18. each device among the claim 15-17 is characterized in that this device comprises neutralize device (32,34) in the 3rd district (31) of the fuel gas that air is added to first district (29), power plant's high pressure compressor (12) that this air comes free gas-turbine to drive.
19. each device among the claim 6-18, the locular wall (35) that it is characterized in that the extended furnace is surrounded by outer wall (36), and its feature is that also pressurized air that high pressure compressor (12) that gas-turbine drives is transported to power plant's main combustion chamber (1) flows through the extended furnace and enters this firing chamber in described outer wall.
20. each device among the claim 6-19, it is characterized in that this device comprises being configured in by second Room (27) enters a intermediate stop valve (6) in first Room (22) of upstream, first Room place, when accident occurring, make the flue gas stream of the controlled cut-out of this valve by extended furnace (7) in power plant.
21. each device among the claim 6-20 is characterized in that the outlet (25) of extended furnace (7) constitutes the immediate access (26) of gas-turbine (13).
22. the device of claim 21, it is characterized in that the part that extend first Room (22) is a tubulose between extended furnace's inlet (23) and outlet (25), its feature also is gas-turbine (13) is configured in the outlet end of this pipe, and its axis longitudinal axis with this pipe basically is vertical.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9501097A SE507460C2 (en) | 1995-03-24 | 1995-03-24 | Method and after-combustion chamber device for raising the temperature of combustion gases from a PFBC plant |
| SE9501097-1 | 1995-03-24 | ||
| SE95010971 | 1995-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1167524A true CN1167524A (en) | 1997-12-10 |
| CN1114786C CN1114786C (en) | 2003-07-16 |
Family
ID=20397697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96190840A Expired - Fee Related CN1114786C (en) | 1995-03-24 | 1996-03-22 | Method in PFBC-power plant and topping combustor device of such plant |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0815390A1 (en) |
| JP (1) | JP3737114B2 (en) |
| KR (1) | KR19980703244A (en) |
| CN (1) | CN1114786C (en) |
| CZ (1) | CZ298797A3 (en) |
| SE (1) | SE507460C2 (en) |
| WO (1) | WO1996030698A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE458955B (en) * | 1987-10-20 | 1989-05-22 | Abb Stal Ab | PFBC KRAFTANLAEGGNING |
| FI89734C (en) * | 1990-01-04 | 1993-11-10 | Ahlstroem Oy | FOERFARANDE OCH ANORDNING FOER BEHANDLING AV GASER FRAON FOERGASNINGS- ELLER FOERBRAENNINGSANLAEGGNINGAR |
| CH684959A5 (en) * | 1991-11-21 | 1995-02-15 | Asea Brown Boveri | A method for a low-emission combustion in a power plant boiler. |
-
1995
- 1995-03-24 SE SE9501097A patent/SE507460C2/en not_active IP Right Cessation
-
1996
- 1996-03-22 EP EP96908424A patent/EP0815390A1/en not_active Ceased
- 1996-03-22 JP JP52925396A patent/JP3737114B2/en not_active Expired - Fee Related
- 1996-03-22 CZ CZ972987A patent/CZ298797A3/en unknown
- 1996-03-22 WO PCT/SE1996/000363 patent/WO1996030698A1/en not_active Application Discontinuation
- 1996-03-22 CN CN96190840A patent/CN1114786C/en not_active Expired - Fee Related
- 1996-03-22 KR KR1019970706648A patent/KR19980703244A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE9501097L (en) | 1996-09-25 |
| SE9501097D0 (en) | 1995-03-24 |
| JPH11502920A (en) | 1999-03-09 |
| KR19980703244A (en) | 1998-10-15 |
| WO1996030698A1 (en) | 1996-10-03 |
| EP0815390A1 (en) | 1998-01-07 |
| SE507460C2 (en) | 1998-06-08 |
| CZ298797A3 (en) | 1998-01-14 |
| JP3737114B2 (en) | 2006-01-18 |
| CN1114786C (en) | 2003-07-16 |
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