CN107033971B - Multi-channel combined burner for coal water slurry gasification furnace and coal water slurry gasification furnace - Google Patents
Multi-channel combined burner for coal water slurry gasification furnace and coal water slurry gasification furnace Download PDFInfo
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- CN107033971B CN107033971B CN201610080651.5A CN201610080651A CN107033971B CN 107033971 B CN107033971 B CN 107033971B CN 201610080651 A CN201610080651 A CN 201610080651A CN 107033971 B CN107033971 B CN 107033971B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
Abstract
The invention discloses a multi-channel combined burner for a water-coal-slurry gasification furnace and the water-coal-slurry gasification furnace. The one end of nozzle body is equipped with the nozzle mouth with the furnace chamber intercommunication of coal slurry gasifier, this internal first oxygen passageway that is injectd respectively with the nozzle mouth intercommunication of nozzle, the second oxygen passageway, fuel gas passageway and coal slurry passageway, the export of coal slurry passageway outwards surpasss the export of first oxygen passageway and the export of fuel gas passageway, the ignition stick movably is established at this internally of nozzle, the ignition end of ignition stick is located the fuel gas passageway and is located between the export of first oxygen passageway and the export of coal slurry passageway when the coal slurry gasifier is in the stage of igniteing, and stretch into in the first oxygen passageway after the ignition of coal slurry gasifier is accomplished. According to the multi-channel combined burner disclosed by the invention, the reliability of the operation of the coal water slurry gasification furnace can be improved and the service life of the ignition rod can be prolonged by combining a plurality of channels.
Description
Technical Field
The invention relates to the technical field of coal chemical industry, in particular to a multi-channel combined burner for a coal water slurry gasification furnace and the coal water slurry gasification furnace.
Background
In the related technology, the coal water slurry gasification furnace mostly adopts an operation mode of combining a preheating burner and a process burner. When the gasifier is operated, fuel gas is firstly used for heating the gasifier, after the gasifier is heated to a certain temperature, the preheating burner is quickly replaced by a process burner, and feeding of coal water slurry and oxygen is carried out.
However, the operation method using the burner described above has the following problems: 1) the preheating burner has to ensure that the gasification furnace is in a negative pressure state in the stages of ignition, temperature rise and burner replacement, so as to prevent flame in the gasification furnace from being sprayed out; 2) when the replacement speed of the process burner is too slow or the temperature of the furnace is too low, the temperature of the gasification furnace is easy to be low, and the result that the coal slurry fed into the gasification furnace cannot be combusted or explode can be generated; 3) because the process burner cannot be tested for leakage after being quickly installed, leakage of fuel gas, coal slurry and oxygen can be caused.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the related art. Therefore, the invention provides the multi-channel combined burner for the coal water slurry gasification furnace, which is simple in structure and high in reliability.
The invention also provides a coal water slurry gasification furnace with the multi-channel combined burner.
The multi-channel combined burner for the water-coal-slurry gasification furnace comprises the following components in part by weight: the burner comprises a burner body, wherein one end of the burner body is provided with a burner port suitable for being communicated with a furnace chamber of a coal water slurry gasification furnace, a first oxygen channel, a second oxygen channel, a fuel gas channel and a coal slurry channel which are respectively communicated with the burner port are limited in the burner body, and an outlet of the coal slurry channel outwards exceeds an outlet of the first oxygen channel and an outlet of the fuel gas channel; the ignition rod is movably arranged in the burner body, the ignition end of the ignition rod is positioned in the fuel gas channel and between the outlet of the first oxygen channel and the outlet of the coal slurry channel when the coal slurry gasification furnace is in an ignition stage, and the ignition end of the ignition rod extends into the first oxygen channel after the ignition of the coal slurry gasification furnace is finished.
According to the multi-channel combined burner for the water-coal-slurry gasification furnace, by combining the plurality of channels, the integrated work of ignition, temperature rise and feeding can be realized without switching the burner of the water-coal-slurry gasification furnace, so that the problems of flame blowout, low temperature in the furnace, leakage and the like caused by switching the burner in the operation process of the water-coal-slurry gasification furnace can be prevented, the operation reliability of the water-coal-slurry gasification furnace can be improved, the ignition rod can extend into the first oxygen channel after the ignition of the water-coal-slurry gasification furnace is finished, the service life of the ignition rod can be prolonged, meanwhile, the water-coal-slurry gasification furnace only needs to be installed once, the burner does not need to be replaced, the operation is more convenient, and the production efficiency.
According to some embodiments of the invention, the multi-channel combined burner further comprises at least one flame detector, wherein the flame detector is adapted to extend into the coal-water slurry gasifier to detect an ignition condition in the coal-water slurry gasifier.
According to some embodiments of the invention, the multi-channel combination burner further comprises: the actuating mechanism is connected with the ignition rod to drive the ignition rod to move.
According to some embodiments of the invention, the burner body comprises: the ignition rod is movably arranged in the oxygen inner tube along the axial direction of the oxygen inner tube so as to drive the ignition end to extend into or out of the first oxygen channel; the fuel pipe is sleeved outside the oxygen inner pipe, and the fuel gas channel is defined between the fuel pipe and the oxygen inner pipe; the coal slurry pipe is sleeved outside the fuel pipe, and a coal slurry channel is defined between the coal slurry pipe and the fuel pipe; the oxygen outer pipe is sleeved outside the coal slurry pipe, the second oxygen channel is defined between the oxygen outer pipe and the coal slurry pipe, and one end of the oxygen outer pipe is provided with the burner nozzle.
Further, the ignition rod, the oxygen inner tube, the fuel tube, the coal slurry tube and the oxygen outer tube are coaxially arranged.
According to some embodiments of the invention, the burner body further comprises: the cooling water outer tube, the cooling water outer tube cover is established outside the oxygen outer tube, inject the cooling water passageway between cooling water outer tube and the oxygen outer tube, the lower extreme of cooling water passageway is sealed.
Further, the nozzle body still includes: the cooling water inner pipe is sleeved outside the oxygen outer pipe and positioned in the cooling water channel so as to divide the cooling water channel into an outer channel and an inner channel, and the outer channel is communicated with the lower end of the inner channel.
Furthermore, a cooling water inlet communicated with the inner channel is formed in the side wall of the cooling water inner pipe, a cooling water outlet communicated with the outer channel is formed in the side wall of the cooling water outer pipe, and the cooling water inlet is higher than the cooling water outlet.
According to some embodiments of the present invention, a first oxygen connecting pipe extending along a radial direction of the oxygen inner pipe is disposed on an outer side surface of the oxygen outer pipe, a second oxygen connecting pipe extending along a radial direction of the oxygen outer pipe is disposed on an outer side surface of the oxygen outer pipe, a fuel gas connecting pipe extending along a radial direction of the fuel pipe is disposed on an outer side surface of the fuel pipe, a coal slurry connecting pipe extending along a radial direction of the coal slurry pipe is disposed on an outer side surface of the coal slurry pipe, a first cooling water connecting pipe extending along a radial direction of the cooling water inner pipe is disposed on an outer side surface of the cooling water outer pipe, and a second cooling water connecting pipe.
According to some embodiments of the invention, the multi-channel combined burner is connected with the coal-water slurry gasification furnace through a connecting flange.
The coal-water slurry gasification furnace according to the embodiment of the second aspect of the invention comprises the multi-channel combined burner for the coal-water slurry gasification furnace according to the embodiment of the first aspect of the invention.
According to the coal water slurry gasification furnace provided by the embodiment of the invention, the reliability of the coal water slurry gasification furnace can be improved by arranging the multi-channel combined burner.
Drawings
Fig. 1 is a schematic structural view of a water-coal-slurry gasification furnace according to an embodiment of the present invention.
Reference numerals:
a water-coal-slurry gasification furnace 100, a furnace chamber 10,
a multi-channel combined burner 1, a burner port 11,
a first oxygen passage 12, an oxygen inner tube 13, a first oxygen connection tube 14, a second oxygen passage 15, an oxygen outer tube 16, a second oxygen connection tube 17,
a fuel gas passage 21, a fuel pipe 22, a fuel gas connection pipe 23,
a coal slurry passage 31, a coal slurry pipe 32, a coal slurry connecting pipe 33,
a cooling water outer pipe 41, a cooling water outlet 411, a second cooling water connecting pipe 42, a cooling water inner pipe 43, a cooling water inlet 431, a first cooling water connecting pipe 44, an outer passage 45, an inner passage 46,
the ignition rod 5, the ignition end 51, the actuator 6, the flame detector 7 and the connecting flange 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A multi-channel composite burner 1 for a water-coal-slurry gasifier 100 according to an embodiment of the present invention is described below with reference to fig. 1.
Referring to fig. 1, a multi-channel combined burner 1 for a water-coal-slurry gasification furnace 100 according to an embodiment of the first aspect of the present invention includes a burner body and an ignition rod 5.
Specifically, a burner port 11 adapted to communicate with a furnace chamber 10 of the coal-water slurry gasification furnace 100 is provided at one end of a burner body (for example, refer to the lower end of the burner body in fig. 1), and a first oxygen passage 12, a second oxygen passage 15, a fuel gas passage 21, and a coal slurry passage 31 communicating with the burner port 11 are defined in the burner body. Oxygen can be introduced into both the first oxygen passage 12 and the second oxygen passage 15, fuel gas can be introduced into the fuel gas passage 21, and coal slurry can be introduced into the coal slurry passage 31. The outlet of the coal slurry passage 31 is outwardly beyond the outlet of the first oxygen passage 12 and the outlet of the fuel gas passage 21 so that the coal slurry in the coal slurry passage 31 flows into the furnace chamber 10 of the water coal slurry gasification furnace 100 from the outlet.
The ignition rod 5 is movably arranged in the burner body, and the ignition end 51 of the ignition rod 5 is positioned in the fuel gas channel 21 and between the outlet of the first oxygen channel 12 and the outlet of the coal slurry channel 31 when the coal-water slurry gasification furnace 100 is in the ignition stage, and extends into the first oxygen channel 12 after the ignition of the coal-water slurry gasification furnace 100 is finished. Therefore, when the coal-water slurry gasification furnace 100 is in the ignition stage, the ignition end 51 of the ignition rod 5 is positioned in the fuel gas channel 21 and between the outlet of the first oxygen channel 12 and the outlet of the coal slurry channel 31, at this time, oxygen enters the burner port 11 through the first oxygen channel 12 and the second oxygen channel 15 respectively, the fuel gas enters the burner port 11 through the fuel gas channel 21, the ignition rod 5 ignites, and the fuel gas burns at the burner port 11. Oxygen gas can be sufficiently mixed with oxygen gas by entering the burner ports 11 through the first oxygen passage 12 and the second oxygen passage 15, respectively, and the radiation area of the combustion flame can be increased.
After the coal water slurry gasification furnace 100 is ignited, the ignition rod 5 extends into the first oxygen channel 12, so that the ignition rod 5 can be prevented from being burnt out, and the service life of the ignition rod 5 is prolonged. Then, the heat load in the furnace body can be adjusted by increasing the flow rates of the fuel gas and the oxygen, so that the coal slurry gasification furnace can be preheated. When the preheating of the coal slurry gasification furnace is finished, namely the temperature in the furnace chamber 10 reaches the feeding temperature, the coal slurry enters the furnace chamber 10 of the coal slurry gasification furnace through the coal slurry channel 31, the transportation of fuel gas is stopped, and the oxygen amount and the coal slurry amount are gradually increased until the coal slurry gasification furnace is fully loaded.
Therefore, in the operation process of the coal water slurry gasification furnace 100, the multi-channel combined burner 1 can realize the integrated work of ignition, temperature rise and feeding without switching the burners, so that the problems of flame ejection in the furnace, over-low temperature in the furnace, leakage and the like caused by switching the burners in the operation process of the coal water slurry gasification furnace 100 can be prevented, the coal water slurry gasification furnace 100 can be ensured to operate reliably and continuously, and the safety of the coal water slurry gasification furnace 100 can be improved.
According to the multi-channel combined burner 1 for the water-coal-slurry gasification furnace 100, by combining the plurality of channels, the water-coal-slurry gasification furnace 100 can realize the integrated work of ignition, temperature rise and feeding without switching the burner, so that the problems of flame ejection, over-low temperature in the furnace, leakage and the like in the furnace and the like caused by the burner switching in the operation process of the water-coal-slurry gasification furnace 100 can be prevented, the operation reliability of the water-coal-slurry gasification furnace 100 can be improved, the ignition rod 5 can extend into the first oxygen channel 12 after the ignition of the water-coal-slurry gasification furnace 100 is finished, the service life of the ignition rod 5 can be prolonged, meanwhile, the water-coal-slurry gasification furnace 100 only needs to be installed once, the burner does not need to be replaced, the operation is more.
In some embodiments of the present invention, referring to fig. 1, the multi-channel combined burner 1 further comprises at least one flame detector 7, i.e. one or more flame detectors 7 may be provided. The flame detector 7 is adapted to extend into the coal-water slurry gasification furnace 100 to detect the ignition condition in the coal-water slurry gasification furnace 100. Thus, the amount of oxygen, the amount of fuel gas, and the ratio thereof can be appropriately adjusted according to the ignition condition in the coal-water slurry gasification furnace 100, and the preheating efficiency can be improved.
It is understood that when the flame detectors 7 are provided in plural (e.g., two), the plural flame detectors 7 may be uniformly arranged along the circumferential direction of the coal-water slurry gasification furnace 100, thereby facilitating observation of the flame combustion condition in the coal-water slurry gasification furnace 100 from different angles and directions.
In some embodiments of the present invention, referring to fig. 1, the multi-channel composite burner 1 further comprises an actuator 6, and the actuator 6 is connected with the ignition rod 5 to drive the ignition rod 5 to move. For example, in the example of fig. 1, when the water-coal-slurry gasification furnace 100 starts to operate, the actuator 6 drives the ignition rod 5 to move downward, so that the ignition end 51 of the ignition rod 5 is located in the fuel gas passage 21 and between the outlet of the first oxygen passage 12 and the outlet of the coal slurry passage 31, and the ignition rod 5 can perform an ignition operation. After the ignition of the ignition bar 5 is completed, the ignition bar 5 stops working, and at this time, the actuator 6 drives the ignition bar 5 to move upward, and the ignition end 51 of the ignition bar 5 is retracted into the first oxygen passage 12. Therefore, the ignition rod 5 can be prevented from being burned out, and the service life of the ignition rod 5 can be prolonged.
In some embodiments of the present invention, referring to FIG. 1, the burner body includes an inner oxygen tube 13, a fuel tube 22, a coal slurry tube 32, and an outer oxygen tube 16. Specifically, a first oxygen passage 12 is defined in the oxygen inner tube 13, and the ignition rod 5 is movably disposed in the oxygen inner tube 13 along the axial direction of the oxygen inner tube 13 to drive the ignition end 51 to extend into or out of the first oxygen passage 12. The fuel pipe 22 is sleeved outside the oxygen inner pipe 13, a fuel gas channel 21 is defined between the fuel pipe 22 and the oxygen inner pipe 13, the coal slurry pipe 32 is sleeved outside the fuel pipe 22, a coal slurry channel 31 is defined between the coal slurry pipe 32 and the fuel pipe 22, the oxygen outer pipe 16 is sleeved outside the coal slurry pipe 32, a second oxygen channel 15 is defined between the oxygen outer pipe 16 and the coal slurry pipe 32, and one end of the oxygen outer pipe 16 is provided with a burner port 11.
From this, can make multichannel combination nozzle 1's simple structure, compactness to help coal slurry gasifier 100 in preheating stage oxygen and fuel gas intensive mixing, make the fuel gas fully burn, improve heating efficiency, also help the intensive mixing of coal slurry and oxygen when throwing the material simultaneously, improve the gasification efficiency of coal slurry. Alternatively, the ignition rod 5, the oxygen inner tube 13, the fuel tube 22, the coal slurry tube 32, and the oxygen outer tube 16 are coaxially disposed.
In some embodiments of the present invention, referring to fig. 1, the burner body further includes a cooling water outer tube 41, the cooling water outer tube 41 is sleeved outside the oxygen outer tube 16, a cooling water channel is defined between the cooling water outer tube 41 and the oxygen outer tube 16, and cooling water is introduced into the cooling water channel, so that the multi-channel combined burner 1 can be cooled. The lower end of the cooling water passage is closed, so that the cooling water in the cooling water passage can be prevented from flowing into the furnace chamber 10 of the coal water slurry gasification furnace 100, and the cooling effect is good.
Further, referring to fig. 1, the burner body further includes a cooling water inner tube 43, the cooling water inner tube 43 is sleeved outside the oxygen outer tube 16 and is located in the cooling water channel to divide the cooling water channel into an outer channel 45 and an inner channel 46, and the lower ends of the outer channel 45 and the inner channel 46 are communicated. Therefore, the flow path of the cooling water in the cooling water channel can be prolonged, and the cooling efficiency is improved.
Further, referring to fig. 1, a cooling water inlet 431 communicating with the inner passage 46 is provided on a sidewall of the cooling water inner tube 43, and a cooling water outlet 411 communicating with the outer passage 45 is provided on a sidewall of the cooling water outer tube 41. Therefore, cooling water can flow into the inner channel 46 from the cooling water inlet 431 and then flow into the outer channel 45 through the lower end of the inner channel 46, the cooling water exchanges heat with the burner body in the flowing process of the inner channel 46 and the outer channel 45, and the cooling water after heat exchange flows out through the cooling water outlet 411. Preferably, the cooling water inlet 431 is higher than the cooling water outlet 411, so that a water head difference may be formed, facilitating inflow and discharge of cooling water.
In some embodiments of the present invention, referring to fig. 1, a first oxygen connection pipe 14 extending along a radial direction of the oxygen inner pipe 13 is provided on an outer side surface of the oxygen inner pipe 13, and oxygen may be introduced into the oxygen inner pipe 13 through the first oxygen connection pipe 14. The outer side surface of the oxygen outer tube 16 is provided with a second oxygen connecting tube 17 extending along the radial direction of the oxygen outer tube 16, and oxygen can be introduced into the oxygen outer tube 16 through the second oxygen connecting tube 17. A fuel gas connection pipe 23 extending in the radial direction of the fuel pipe 22 is provided on the outer side surface of the fuel pipe 22, and fuel gas can be introduced into the fuel pipe 22 through the fuel gas connection pipe 23. The outer side surface of the coal slurry pipe 32 is provided with a coal slurry connecting pipe 33 extending along the radial direction of the coal slurry pipe 32, and the coal slurry can be introduced into the coal slurry pipe 32 through the coal slurry connecting pipe 33. A first cooling water connection pipe 44 extending in the radial direction of the cooling water inner pipe 43 is provided on the outer side surface of the cooling water inner pipe 43, and cooling water can flow into the cooling water inner pipe 43 through the first cooling water connection pipe 44. A second cooling water connecting pipe 42 extending along the radial direction of the cooling water outer pipe 41 is arranged on the outer side surface of the cooling water outer pipe 41, and cooling water after heat exchange with the burner body can flow out of the cooling water outer pipe 41 through the second cooling water connecting pipe 42.
Therefore, the conveying work of oxygen, fuel gas and coal slurry is facilitated, meanwhile, the installation of each part is facilitated, and the interference among the parts is small during installation.
In some embodiments of the present invention, referring to fig. 1, the multi-channel combined burner 1 is connected to the coal-water slurry gasification furnace 100 through a connecting flange 8. Therefore, the connection tightness of the multi-channel combined burner 1 and the coal water slurry gasification furnace 100 can be ensured.
Of course, the connection method of the multi-channel combined burner 1 and the coal-water slurry gasification furnace 100 is not limited to the above connection method.
Referring to fig. 1, a coal-water slurry gasification furnace 100 according to a second aspect embodiment of the present invention includes a multi-channel combined burner 1 for the coal-water slurry gasification furnace 100 according to the first aspect embodiment of the present invention.
According to the coal water slurry gasification furnace 100 provided by the embodiment of the invention, the reliability of the coal water slurry gasification furnace 100 can be improved by arranging the multi-channel combined burner 1.
The operation of the water-coal-slurry gasification furnace 100 according to the embodiment of the invention is specifically described below by taking fig. 1 as an example.
As shown in fig. 1, the coal-water slurry gasification furnace 100 adjusts the ratio of the flow rates of oxygen and fuel gas to an appropriate ratio before ignition. When the water-coal-slurry gasification furnace 100 starts to operate, oxygen is respectively introduced into the first oxygen passage 12 and the second oxygen passage 15, fuel gas is introduced into the fuel gas passage 21, and then the oxygen and the fuel gas flow into the burner port 11. Meanwhile, the actuating mechanism 6 drives the ignition rod 5 to move downwards to extend out of the first oxygen channel 12 for ignition, the ignition condition in the water-coal-slurry gasification furnace 100 can be observed and detected through the flame detector 7, and the flow and the proportion of oxygen and fuel gas can be adjusted in time through the detected condition, so that the normal and stable operation of the water-coal-slurry gasification furnace 100 is ensured.
After the ignition of the ignition rod 5 is completed, the ignition rod 5 stops working, and meanwhile, the actuating mechanism 6 drives the ignition rod 5 to move upwards and retract into the first oxygen channel 12, so that the ignition rod 5 is prevented from being burnt out. After the ignition rod 5 is retracted into the first oxygen passage 12, the heat load in the coal-water slurry gasification furnace 100 is adjusted by increasing the flow rates of the fuel gas and oxygen. After the heat load in the coal water slurry gasification furnace 100 reaches the corresponding condition (namely, the temperature in the furnace chamber 10 reaches the feeding temperature), the coal slurry is introduced into the coal slurry channel 31, and the fuel gas is withdrawn, namely, the coal slurry and the oxygen are fed into the coal water slurry gasification furnace 100 at the moment, and then the coal slurry and the oxygen enter the furnace chamber 10 for gasification, so that the coal slurry and the oxygen can be fully mixed and contacted, and the gasification efficiency of the coal slurry is improved. Subsequently, the amounts of oxygen and coal slurry may be gradually increased until the coal-water slurry gasification furnace 100 is fully charged.
In summary, according to the multi-channel combined burner 1 and the coal water slurry gasification furnace 100 of the embodiment of the present invention, the integrated operation of ignition, temperature rise and feeding can be realized without switching the burner, so that the operation reliability of the coal water slurry gasification furnace 100 can be improved, the structure of the coal water slurry gasification furnace 100 is simple and compact, the ignition rod 5 can be retracted into the first oxygen channel 12 after the ignition is completed, the ignition rod 5 is prevented from being burned out, meanwhile, the coal water slurry gasification furnace 100 only needs to be installed once, the burner does not need to be replaced, the operation is more convenient, the production efficiency can be improved, and the ignition and operation conditions of the coal water slurry gasification furnace 100 can be observed through the flame detector 7.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. The utility model provides a multichannel combination nozzle for coal slurry gasifier which characterized in that includes:
the nozzle body, the one end of nozzle body is equipped with the nozzle mouth that is suitable for with the furnace chamber intercommunication of coal slurry gasifier, this internal injecing of nozzle have respectively with first oxygen passageway, second oxygen passageway, fuel gas passageway and the coal slurry passageway of nozzle mouth intercommunication, the export of coal slurry passageway outwards surpasss the export of first oxygen passageway with the export of fuel gas passageway, the nozzle body includes:
an oxygen inner tube defining the first oxygen channel therein;
the fuel pipe is sleeved outside the oxygen inner pipe, and the fuel gas channel is defined between the fuel pipe and the oxygen inner pipe;
the coal slurry pipe is sleeved outside the fuel pipe, and a coal slurry channel is defined between the coal slurry pipe and the fuel pipe;
the oxygen outer pipe is sleeved outside the coal slurry pipe, the second oxygen channel is defined between the oxygen outer pipe and the coal slurry pipe, and one end of the oxygen outer pipe is provided with the burner nozzle;
the ignition rod is movably arranged in the burner body, the ignition rod is movably arranged in the oxygen inner tube along the axial direction of the oxygen inner tube so as to drive the ignition end to extend into or out of the first oxygen channel, the ignition end of the ignition rod is positioned in the fuel gas channel and between the outlet of the first oxygen channel and the outlet of the coal slurry channel when the coal water slurry gasification furnace is in an ignition stage, and the ignition end of the ignition rod extends into the first oxygen channel after the ignition of the coal water slurry gasification furnace is finished;
the cooling water outer pipe is sleeved outside the oxygen outer pipe, a cooling water channel is defined between the cooling water outer pipe and the oxygen outer pipe, and the lower end of the cooling water channel is closed;
the cooling water inner pipe is sleeved outside the oxygen outer pipe and positioned in the cooling water channel so as to divide the cooling water channel into an outer channel and an inner channel, the lower end of the outer channel is communicated with the lower end of the inner channel, a cooling water inlet communicated with the inner channel is arranged on the side wall of the cooling water inner pipe, a cooling water outlet communicated with the outer channel is arranged on the side wall of the cooling water outer pipe, and the cooling water inlet is higher than the cooling water outlet;
the outer side of the cooling water inner pipe is provided with a first cooling water connecting pipe extending along the radial direction of the cooling water inner pipe, and the outer side of the cooling water outer pipe is provided with a second cooling water connecting pipe extending along the radial direction of the cooling water outer pipe;
when the coal water slurry gasification furnace is in an ignition stage, the ignition end of the ignition rod is positioned in the fuel gas channel and between the outlet of the first oxygen channel and the outlet of the coal slurry channel, at the moment, oxygen enters the burner nozzle through the first oxygen channel and the second oxygen channel respectively, fuel gas enters the burner nozzle through the fuel gas channel, after the ignition of the coal water slurry gasification furnace is finished, the ignition rod extends into the first oxygen channel, then the heat load in the furnace body is adjusted by increasing the flow of fuel gas and oxygen to preheat the coal slurry gasification furnace, when the preheating of the coal slurry gasification furnace is finished, the coal slurry enters the furnace chamber of the coal slurry gasification furnace through the coal slurry channel, and stopping the delivery of the fuel gas, and gradually increasing the oxygen amount and the coal slurry amount until the coal slurry gasification furnace is fully loaded.
2. The multi-channel combined burner of claim 1, further comprising at least one flame detector adapted to extend into the coal-water slurry gasifier to detect ignition in the coal-water slurry gasifier.
3. The multi-channel composite burner of claim 1, further comprising: the actuating mechanism is connected with the ignition rod to drive the ignition rod to move.
4. The multi-channel composite burner of claim 1, wherein the ignition rod, the oxygen inner tube, the fuel tube, the coal slurry tube, and the oxygen outer tube are coaxially disposed.
5. The multi-channel combined burner according to any one of claims 1 to 4, wherein the multi-channel combined burner is connected with the coal-water slurry gasification furnace through a connecting flange.
6. A coal-water slurry gasification furnace, characterized by comprising the multi-channel combined burner for the coal-water slurry gasification furnace according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610080651.5A CN107033971B (en) | 2016-02-04 | 2016-02-04 | Multi-channel combined burner for coal water slurry gasification furnace and coal water slurry gasification furnace |
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| CN201610080651.5A CN107033971B (en) | 2016-02-04 | 2016-02-04 | Multi-channel combined burner for coal water slurry gasification furnace and coal water slurry gasification furnace |
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| CN107033971B true CN107033971B (en) | 2021-01-08 |
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|---|---|---|---|---|
| CN108148632A (en) * | 2018-02-13 | 2018-06-12 | 北京阳华科技有限公司 | A kind of adjustable gasification burner tip |
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