CN217976389U - Gas turbine using solid fuel - Google Patents

Abstract

The utility model discloses a gas turbine using solid fuel, which comprises a compressor, a turbine and a combustion chamber, wherein the compressor and the turbine are sequentially arranged on a rotating shaft in the axial direction, the combustion chamber is connected with the gas outlet end of the compressor, the combustion chamber comprises a first combustion part, a first gas chamber and a second gas chamber, at least part of the first gas chamber and the second gas chamber are arranged around the first combustion part and are respectively communicated with the first combustion part, and the gas outlet end of the compressor is communicated with the first gas chamber; the gas turbine also comprises a second combustion part, the second combustion part is provided with a solid fuel combustion cavity, and the exhaust end of the second combustion part is communicated with the second gas chamber; the combustion chamber still includes row's sediment portion, and row's sediment portion is located the one side that contains solid fuel combustion chamber dorsad flue chamber and is connected with containing solid fuel combustion chamber. The utility model discloses a gas turbine can directly utilize solid fuel to come the operation work to reduce the running cost, guarantee the high efficiency of gas turbine operation simultaneously.

Description

Gas turbine using solid fuel

Technical Field

The utility model belongs to the heat engine field, concretely relates to utilize gas turbine of solid fuel.

Background

The existing gas turbine uses continuously flowing gas as working medium to drive the impeller to rotate at high speed, so as to convert the energy of fuel into useful work, and is a rotary impeller type heat engine. The device mainly comprises three parts of a gas compressor, a combustion chamber and a turbine: the air compressor sucks air from the external atmospheric environment, compresses the air to pressurize the air, and simultaneously, the air temperature is correspondingly increased; compressed air is pumped into a combustion chamber and is mixed with injected fuel to be combusted to generate high-temperature and high-pressure gas; then the gas or liquid fuel enters a turbine to do work through expansion, the turbine is pushed to drive the gas compressor and the external load rotor to rotate at a high speed together, and the purpose of converting the chemical energy part of the gas or liquid fuel into mechanical work is achieved.

At present, the fuel of the gas turbine is generally liquid or gaseous fuel, however, the cost of the liquid or gaseous fuel is high, and the cost of the solid fuel is relatively low, but the general gas turbine is often difficult to directly utilize the solid fuel.

Disclosure of Invention

An embodiment of the utility model provides an utilize solid fuel's gas turbine, can directly utilize solid fuel to move work to reduce the running cost, guarantee the high efficiency of gas turbine operation simultaneously.

The embodiment of the utility model provides an utilize gas turbine of solid fuel, including installing in proper order the compressor and the turbine of pivot in the axial, and the combustion chamber of being connected with the end of giving vent to anger of compressor, the combustion chamber includes first combustion portion, first air chamber and second air chamber at least partly set up around first combustion portion and communicate with first combustion portion respectively, the end of giving vent to anger of compressor communicates with first air chamber, gas turbine still includes second combustion portion, second combustion portion has and contains solid fuel combustion chamber and smoke chamber, and the exhaust end of second combustion portion communicates with second air chamber; the second combustion part also comprises a slag discharging part, and the slag discharging part is positioned on one side of the combustion cavity containing the solid fuel, which is back to the smoke cavity and is connected with the combustion cavity containing the solid fuel.

According to one aspect of the embodiment of the present invention, the second combustion part comprises a housing and a first partition plate, the housing surrounds and is limited by the housing, and at least the first partition plate separates to form a combustion chamber containing solid fuel and a smoke chamber, and the smoke chamber is positioned above the combustion chamber containing solid fuel; the second combustion part also comprises a smoke plate arranged on the partition plate, and the combustion cavity containing the solid fuel is communicated with the smoke cavity through the smoke plate.

According to an aspect of the embodiments of the present invention, the second combustion portion further has an input port and an exhaust port, wherein the input port is disposed on the solid fuel-containing combustion chamber, and the exhaust port is disposed on the smoke chamber.

According to the utility model discloses an aspect, the gas board includes that the intercommunication contains a plurality of gas board intercommunicating pores of solid fuel burning chamber and flue gas chamber, and the aperture of gas board intercommunicating pore is 0.1mm to 100mm.

According to one aspect of the embodiment of the utility model, the slag discharging part comprises a slag containing chamber, a slag discharging port, a slag discharging door and an actuating mechanism, and the slag containing chamber is communicated with the combustion cavity containing solid fuel; the slag discharging port is positioned on one side of the slag containing chamber, which is back to the combustion cavity containing the solid fuel; the slag discharge door is hermetically and slidably connected to the inner wall of the slag containing chamber; the actuating mechanism is connected with the slag discharge door and drives the slag discharge door to move in the slag containing chamber.

According to the utility model discloses an aspect, the row's sediment door can move out the row's cinder notch, and row's sediment portion still includes the slag removal device with the clearance lie in the lime-ash on the row's sediment door.

According to an aspect of the embodiments of the present invention, at least a part of the slag discharge door is inclined.

According to an aspect of the embodiment of the present invention, the second combustion portion further comprises a cleaning opening, and the cleaning opening is located on one side of the smoke chamber facing away from the solid fuel combustion chamber and communicated with the smoke chamber.

According to the utility model discloses an aspect, the flue gas board sets up to portable or can overturn.

According to an aspect of the embodiments of the present invention, the gas turbine further includes a heating device, the heating device being located in the second combustion portion, adjacent to the input port of the second combustion portion.

According to the utility model discloses utilize gas turbine of solid fuel, through being provided with the combustion chamber including first combustion portion, second combustion portion and air chamber, second combustion portion has and contains solid fuel combustion chamber for this gas turbine can directly utilize solid fuel to move work, with the region application scope that reduces running cost or increase gas turbine. And the air chamber is divided into a first air chamber and a second air chamber, at least part of the first air chamber and the second air chamber are arranged around the first combustion part and are respectively communicated with the first combustion part, the air outlet end of the air compressor is communicated with the first air chamber, and the air outlet end of the second combustion part is communicated with the second air chamber.

Drawings

Fig. 1 shows a schematic structural view of a gas turbine according to an embodiment of the invention.

Fig. 2 shows a schematic view of the second combustion part of fig. 1, with the slagging door in a first position.

Figure 3 shows a schematic view of the structure of the smoke panel of figure 2.

Fig. 4 shows a schematic structural view of the slag discharge door in a second position.

Fig. 5 shows a structural schematic view of the slag discharge door in a third position.

Fig. 6 shows a schematic structural view of another embodiment of the second combustion part according to the present invention.

Fig. 7 shows a schematic view of a gas turbine according to another embodiment of the invention.

FIG. 8 is a schematic view illustrating a structure of an embodiment of the second combustion part of FIG. 7.

Fig. 9 shows a schematic structural view of an annular combustion chamber according to the invention.

Fig. 10 shows a schematic structural view of another embodiment of an annular combustion chamber according to the invention.

FIG. 11 illustrates a cross-sectional view of the annular combustion chamber of FIG. 10.

Fig. 12 shows a schematic structural view of a mono-can combustor according to the present invention.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

At present, fuels generally have liquid state, gaseous state and solid state, the solid state is widely distributed, the existing forms are various, and the acquisition (exploitation) cost is low, so that the price is low, for example, waste materials such as coal (powder), straws, even kitchen garbage, sludge, biogas residues and the like have a certain calorific value, can be used as solid state fuels, and are subjected to harmless treatment. However, these solid fuels are not readily available for direct use and require secondary processing such as refining and conversion, which increases costs, and the widespread distribution of these solid fuels is widespread and decentralized, resulting in additional transportation and storage costs.

Therefore, there is a need for a solid fuel utilization device, which can convert solid fuel into directly usable energy such as heat energy, kinetic energy and/or electric energy, and can realize local utilization in the area where the solid fuel is distributed.

To achieve the above object, as shown in fig. 1, the present invention provides a gas turbine using solid fuel, which includes a compressor 200 and a turbine 300 axially installed in sequence on a rotating shaft 100, and a combustion chamber 400 connected to an outlet end of the compressor 200.

The rotating shaft 100 may be an integral rotating shaft, or may be a segmented rotating shaft connected by a coupling. The material of the rotating shaft can be steel, and can also be other suitable metals, alloys or composite materials. The shaft 100 is supported by bearings to the casing or bearing housing of the gas turbine. The bearing may be a ball bearing, or a non-contact bearing such as a magnetic bearing, an air bearing, or a gas-magnetic hybrid bearing. The embodiment of the utility model provides an air bearing is preferred.

The compressor 200 may be an axial flow compressor or a centrifugal compressor. In some embodiments, the compressor 200 may include a compressor wheel and diffuser. An air inlet of the compressor 200 communicates with the external environment for air suction, and sucked air (e.g., air) is compressed by the compressor 200 and then enters the combustion chamber 400 through an air outlet end of the compressor 200.

The turbine 300 may be an axial turbine or a centrifugal turbine. The material of the turbine 300 may be a refractory material, such as nickel or a nickel alloy. The turbine 300 is generally coupled to an exhaust end of the combustor 400 to receive the high temperature combustion gases from the combustor 400 and to utilize the high temperature combustion gases to produce work.

The combustion chamber 400 includes a first combustion part 420, a first gas chamber 410, and a second gas chamber 430. The first and second air cells 410 and 430 are at least partially disposed around the first combustion portion 420, that is, the first and second air cells 410 and 430 may circumferentially completely surround the first combustion portion 420, or the first and second air cells 410 and 430 may circumferentially surround a portion of the first combustion portion 420, depending on the design position of the intake passage (intake hole) of the first combustion portion 420 but capable of satisfying uniform and sufficient intake conditions and achieving proper flame position and combustion temperature. The first and second air chambers 410 and 430 are respectively communicated with the first combustion part 420, for example, the first and second air chambers 410 and 420 are communicated with each other through air holes. The outlet end of the compressor 200 is connected to the first air chamber 410, and the pressure air from the compressor 200 can enter the first combustion portion 420 to be burned (for example, to provide enough oxidant). The gas turbine further includes a second combustion part 500 and an exhaust end of the second combustion part 500 communicates with the second plenum 430, the second combustion part 500 having a solid fuel-containing combustion chamber in which a solid fuel-containing fuel can be accommodated. The solid fuel is a single-state fuel or a mixed-state fuel containing at least a solid fuel, such as solid coal powder, coal slurry obtained by mixing liquid water with solid coal powder, and the like. The solid-containing fuel may be completely combusted, partially combusted, or reacted to produce a gas (e.g., a combustible gas such as carbon monoxide and/or hydrogen) in the second combustion portion 500, and the reacted combustible gas (e.g., carbon monoxide) is introduced into the first combustion portion 420 for post combustion. It is preferable that the gas is at least partially reacted in the second combustion part 500 and the resulting combustible gas is introduced into the first combustion part 420 for secondary combustion. In some alternative embodiments, when the solid fuel is coal or other elemental carbon-containing fuel, and water (especially steam) is introduced into the second combustion portion 500, the chemical reaction of the reaction gas may include a reaction similar to coal gasification (where carbon reacts with water at high temperatures between 700 ℃ and 1200 ℃ to form carbon monoxide and hydrogen, i.e., water gas).

The second combustion part 500 further includes a slag discharge part 570, and the slag discharge part 570 is located at a lower portion of the solid fuel-containing combustion chamber of the second combustion part 500.

Further, the second plenum 430 may be in communication with the primary combustion zone of the first combustion portion 420. That is, the flue gas generated from the second combustion part 500 enters the main combustion area of the first combustion part 420, so that the flue gas generated from the second combustion part 500 can be burnt out at a higher temperature of the main combustion area as much as possible to remove ash in the flue gas as much as possible.

In some alternative embodiments, as shown in FIG. 1, the gas turbine further includes a fuel tank 700. The fuel tank 700 may store a gaseous fuel and/or a liquid fuel and supply the first combustion part 420.

As shown in fig. 2, the second combustion portion 500 includes a housing 503 and a first partition 504, which are surrounded by the housing 503 and partitioned by at least the first partition 504 to form a solid fuel-containing combustion chamber 510 and a smoke chamber 520. The housing 503 is a casing opposite to the solid fuel combustion chamber 510 and the smoke chamber 520, and other casings can be provided outside the housing 503 for protection. The second combustion section 500 also has an input port 501 and an exhaust port 502, wherein the input port 501 is disposed on the solid fuel-containing combustion chamber 510 and the exhaust port 502 is disposed on the smoke chamber 520. The housing 503 and the first partition 504 may be integrally formed, or may be separately manufactured and connected together by a connecting member or welding. The housing 503 and the first partition 504 may be made of steel, or may be made of a high temperature resistant material such as nickel or nickel alloy. The smoke chamber 520 is located above the solid fuel combustion chamber 510, and the solid fuel contained in the solid fuel combustion chamber 510 burns to generate smoke which enters the smoke chamber 520. The solid fuel-containing combustion chamber 510 may also have a bleed port for introducing a suitable combustion-supporting gas (e.g., air).

Further, the second combustion portion 500 further includes a flue gas plate 530 disposed on the partition 504, and the solid fuel-containing combustion chamber 510 and the flue gas chamber 520 are communicated through the flue gas plate 530. The flue gas panel 530 controls the flame height of the solid fuel-containing combustion chamber 510, making the flame more uniform and preventing upward flame channeling. As shown in fig. 3, the flue gas panel 530 includes a plurality of flue gas panel communication holes that communicate the solid fuel-containing combustion chamber 510 and the flue chamber 520. Fig. 3 shows a rectangular flue gas panel 530, however the flue gas panel 530 may also be circular, triangular, oval, etc. in other shapes. Figure 3 shows circular fume plate communication holes, however the fume plate communication holes may be rectangular, triangular, oval, etc. in other shapes. The material of the flue gas panel 530 may be nickel or a nickel alloy, for example the flue gas panel 530 may be a nickel mesh. The flue gas panel 530 is a high-mesh plate to block as much as possible the combustion dust from entering the second gas chamber 430 and the reaction gas from entering the second gas chamber 430. For example, the aperture of the smoke plate communication hole is 0.1mm to 100mm.

Further, the second combustion part 500 further comprises a slag discharging part 570, and the slag discharging part 570 is located on the side of the solid fuel containing combustion chamber 510 opposite to the smoke chamber 520 and connected with the solid fuel containing combustion chamber 510. Specifically, the slag discharging portion 570 includes a slag chamber 571, a slag discharging port 572, a slag discharging door 573, and an actuating mechanism 574. The slag chamber 571 is in communication with the solid fuel-containing combustion chamber 510. The slag discharge opening 572 is located on a side of the slag containing chamber 571 facing away from the solid fuel-containing combustion chamber 510. The slag discharge door 573 is hermetically and slidably connected to the inner wall of the slag chamber 571. The actuating mechanism 574 is connected to the slag discharge door 573 and drives the slag discharge door 573 to move in the slag chamber 571. The actuating mechanism 574 may be a linear moving mechanism such as a screw rod, a pneumatic rod, a hydraulic rod, etc.

As shown in fig. 4, as the gas turbine is operated, the ash deposition in the second combustion part 500 increases, and the slagging door 573 can be moved away from the flue gas panel 530 in the slag chamber 571 in an airtight manner to increase the space for accommodating the ash deposition and prevent the ash deposition from affecting the combustion.

Further, as shown in fig. 5, the slag discharge door 573 can be moved out of the slag discharge opening 572, and the slag discharge portion 570 further includes a slag cleaning device 575 for cleaning ash on the slag discharge door 573. The slag cleaning device 575 may include an actuating mechanism and a cleaning device at one end of the actuating mechanism to laterally clean the ash deposits on the slag discharge door 573.

Further, at least a portion of the slag discharge door 573 is disposed obliquely. This facilitates the deposition of dust falling along the inclined surface.

As shown in fig. 6, the second combustion portion 500 further comprises a purge port 576, the purge port 576 being located on a side of the smoke chamber 520 facing away from the solid fuel-containing combustion chamber 510 and being in communication with the smoke chamber 520. Optionally, the purge port 576 is located at the top end of the second combustion section 500. The cleaning opening 576 has an airtight door that can be opened and closed. When the second combustion part 500 is operated, the airtight door of the purge port 576 is closed and airtight sealed. When the second combustion part 500 needs to be cleaned, the airtight door of the cleaning opening 576 is opened and cleaning fluid can be introduced to wash out impurities such as dust deposited in the second combustion part 500. The cleaning fluid may be a gas (e.g., a pressurized gas) or a liquid (e.g., water). The cleaning fluid may be mixed with solid particles (e.g. fluid for magic flow) to increase the cleaning effect. The cleaning fluid may be flushed and then discharged through the dump gate 573.

Further, the smoke panel 530 is provided to be movable or turnable. When the second combustion part 500 is cleaned, the flue gas panel 530 is removed (turned over) to facilitate dust and liquid leakage therethrough.

In some alternative embodiments, as shown in FIG. 7, the gas turbine further includes a heating device 550, the heating device 550 being located within the second combustion portion 500. The heating device 550 is used to ignite the solid-containing fuel in the second combustion portion 500 or to assist in the ignition of the solid-containing fuel.

Further, as shown in fig. 8, the heating device 550 is disposed adjacent to the input port 501 of the second combustion portion 500.

Further, the heating device 550 is plural in number, and the plural heating devices 550 are arranged around the combustion zone of the second combustion part 500.

In some alternative embodiments, as shown in FIG. 9, the combustion chamber 400 is an annular combustion chamber. The combustion chamber 400 is disposed around the rotary shaft 100 and the turbine 300, the first and second air chambers 410 and 430 are axially juxtaposed and surround the first combustion part 420, the first air chamber 410 has a pressure gas inlet 413 connected to an outlet end of the compressor 200, the second air chamber 430 has a flue gas inlet 433 connected to an outlet end 502 of the second combustion part 500, and the first combustion part 420 has a combustion chamber exhaust 422 facing the turbine 300.

Specifically, in some embodiments, and as shown in fig. 9, the combustor 400 includes a first casing 411, a second casing 421, an end plate 412, and a second partition 431. The second housing 421 surrounds the first combustion part 420 formed in a ring shape and has an opening corresponding to the combustion chamber exhaust port 422. The first housing 411 and the end plate 412 at least partially surround the second housing 421 and together therewith define a cavity which is divided by a second partition 431 into the first air chamber 410 and the second air chamber 430 which are arranged in the axial direction. The second housing 421 has a through hole communicating the first air chamber 410 and the first combustion part 420 and communicating the second air chamber 430 and the first combustion part 420. In fig. 9 different types of gas (compressor pressure gas and flue gas etc.) are distinguished by different patterns of arrows.

Further, in other embodiments, as shown in fig. 10 and 11, the combustion chamber 400 further includes a third partition 432 and a fourth partition 434. The second, third, and fourth partitions 431, 432, and 434 partition the cavity defined by the first housing 411, the end plate 412, and the second housing 421 into a plurality of sub-cavities communicating with each other. The part of the second shell 421 close to the rotating shaft 100 is provided with a through hole for introducing the exhaust of the compressor 200, so that the exhaust of the compressor 200 entering the first air chamber 410 can reach one side close to the rotating shaft 100, the second shell 421 can be cooled in all directions, the first shell 411 close to the rotating shaft 100 can be cooled, the integral cooling effect of the combustion chamber 400 is improved, and the service life of the material is prolonged. The different types of gas (compressor pressure gas and flue gas etc.) are distinguished in fig. 10 and 11 by different types of arrows.

Further, the plurality of sub-cavities communicated with each other can be uniformly distributed along the axial direction, so that the air inlet effect is improved. The sectional shape and the communication form of the sub-cavities are not limited to the form shown in fig. 11.

In some alternative embodiments, as shown in fig. 12, the combustion chamber 400 is a single-cylinder combustion chamber, the combustion chamber 400 is disposed at one side of the rotating shaft 100, the first air chamber 410 and the second air chamber 430 are axially juxtaposed and surround the first combustion portion 420, the first air chamber 410 has a pressure air inlet 413 connected to an air outlet end of the compressor 200, the second air chamber 430 has a flue gas inlet 433 connected to an air outlet end of the second combustion portion 500, and the combustion chamber inlet 413 and the combustion chamber outlet 422 are disposed in the same direction.

Specifically, the combustion chamber 400 includes a first housing 411, a second housing 421, and a second partition 431, the second housing 421 surrounding the first combustion part 420 forming a single cylinder and having an opening at one end in the axial direction corresponding to a combustion chamber exhaust port 422. The first housing 411 at least partially surrounds the second housing 421 and defines a cavity together therewith, which is divided by two or more second partitions 431 into the first air chamber 410 and the second air chamber 430 arranged in the axial direction. The second housing 421 has a through hole communicating the plenum 410 with the first combustion part 420 and a through hole communicating the second plenum 430 with the first combustion part 420. In fig. 12 different types of gas (compressor pressure gas and flue gas etc.) are distinguished by different patterns of arrows.

Further, the second plenum 430 has a gas passage therein communicating with the first plenums 410 on both sides. So that the exhaust gas of the compressor 200 entering the first air chamber 410 can reach the position of the nozzle 490 and be mixed and combusted with the fuel sprayed out from the nozzle 490 through the swirler.

Further, the second plenum 430 is plural in number and arranged in the axial direction, and different second plenums 430 receive the flue gas from different second combustion portions 500. In this way, different second combustion parts 500 may combust different fuels to simultaneously utilize multiple fuels. Further, a single larger second combustion section 500 can be divided into a plurality of smaller second combustion sections 500, and the different second combustion sections 500 can be more finely controlled to achieve gas turbine output power regulation and redundant protection.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. A gas turbine using solid fuel comprises a compressor, a turbine and a combustion chamber, wherein the compressor and the turbine are sequentially arranged on a rotating shaft in the axial direction, the combustion chamber is connected with the air outlet end of the compressor, the gas turbine is characterized in that the combustion chamber comprises a first combustion part, a first air chamber and a second air chamber, at least part of the first air chamber and the second air chamber are arranged around the first combustion part and are respectively communicated with the first combustion part, the air outlet end of the compressor is communicated with the first air chamber, the gas turbine further comprises a second combustion part, the second combustion part is provided with a combustion cavity containing the solid fuel and a smoke cavity, and the air outlet end of the second combustion part is communicated with the second air chamber; the second combustion part also comprises a slag discharging part, and the slag discharging part is positioned on one side of the solid fuel-containing combustion cavity, which is back to the smoke cavity, and is connected with the solid fuel-containing combustion cavity.

2. The gas turbine of claim 1, wherein said second combustion section includes a housing and a first baffle plate, defined circumferentially by said housing and separated by at least said first baffle plate to form a solid fuel-containing combustion chamber and a flue chamber, said flue chamber being located above said solid fuel-containing combustion chamber; the second combustion part also comprises a smoke plate arranged on the partition plate, and the combustion cavity containing the solid fuel is communicated with the smoke cavity through the smoke plate.

3. The gas turbine of claim 2, wherein the second combustion section further has an inlet port and an exhaust port, wherein the inlet port is disposed on the solid fuel-containing combustion chamber and the exhaust port is disposed on the flue chamber.

4. The gas turbine according to claim 2, wherein the flue gas panel includes a plurality of flue gas panel communication holes that communicate the solid fuel-containing combustion chamber and the flue chamber, and the flue gas panel communication holes have a hole diameter of 0.1mm to 100mm.

5. The gas turbine of claim 1, wherein the slag discharge portion comprises a slag chamber, a slag discharge port, a slag discharge door and an actuating mechanism, and the slag chamber is communicated with the solid fuel-containing combustion chamber; the slag discharge port is positioned on one side of the slag containing chamber, which is back to the combustion cavity containing the solid fuel; the slag discharge door is hermetically and slidably connected to the inner wall of the slag containing chamber; the actuating mechanism is connected with the slag discharge door and drives the slag discharge door to move in the slag containing chamber.

6. The gas turbine of claim 5, wherein the discharge door is removable from the discharge opening, and wherein the discharge portion further comprises a slag removal device to remove ash located on the discharge door.

7. The gas turbine of claim 5, wherein at least a portion of the slagging door is inclined.

8. The gas turbine of claim 2 wherein said second combustion portion further comprises a purge port located on a side of said flue chamber facing away from said solid fuel-containing combustion chamber and in communication with said flue chamber.

9. A gas turbine according to claim 2, wherein the flue gas panel is arranged to be movable or turnable.

10. The gas turbine of claim 3, further comprising a heating device positioned within said second combustion section adjacent to an input port of said second combustion section.

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