CN113154393B - Integrated gun for startup burner, use method and industrial furnace - Google Patents

Integrated gun for startup burner, use method and industrial furnace Download PDF

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Publication number
CN113154393B
CN113154393B CN202110373195.4A CN202110373195A CN113154393B CN 113154393 B CN113154393 B CN 113154393B CN 202110373195 A CN202110373195 A CN 202110373195A CN 113154393 B CN113154393 B CN 113154393B
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China
Prior art keywords
burner
channel
flame
fire detection
ignition
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CN113154393A (en
Inventor
唐强
马利锦
郭莹
颜超
杨海军
刘悦
刘金勇
赵顶
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Beijing Hanghua Energy Saving And Environmental Protection Technology Co ltd
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Beijing Hanghua Energy Saving And Environmental Protection Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
    • 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
    • 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
    • C10J3/72—Other features
    • C10J3/723—Controlling or regulating the gasification process
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2204/00—Burners adapted for simultaneous or alternative combustion having more than one fuel supply
    • F23D2204/10—Burners adapted for simultaneous or alternative combustion having more than one fuel supply gaseous and liquid fuel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)

Abstract

The invention provides an integrated gun for a startup burner, a using method and an industrial furnace, wherein the startup burner comprises an integrated gun, a fire detection system, a burner mounting seat and a site control box, and the integrated gun is mounted on the burner mounting seat and is a combustion device of the startup burner; the fire detection system is arranged on the burner mounting seat and is used for detecting the flame condition at the position of the integrated gun nozzle and sending detection data to the field control box; the burner mounting seat is in butt joint with the combustion chamber of the industrial furnace, so that the integrated gun nozzle enters the combustion chamber of the industrial furnace; the on-site control box is respectively connected with the ignition/fire detection control box and the fire detection system by signals, so that on-site control of ignition and flame detection is realized, and meanwhile, control signals are transmitted to the central control DCS to realize remote control. The invention simplifies the structure of the startup burner through the structural design of the integrated gun, improves the operation condition, improves the automation degree, improves the reliability of the startup burner device and reduces the potential safety hazard in the use process.

Description

Integrated gun for startup burner, use method and industrial furnace
Technical Field
The invention belongs to the technical fields of coal gasification, residual oil gasification, natural gas conversion, three-waste (waste gas, waste liquid, waste solid) incineration, petrochemical industry and other energy chemical industry, and particularly relates to an integrated gun for a startup burner, a using method and an industrial furnace.
Background
The start-up burner is used for heating a gasifier or other industrial furnace combustion chamber from ambient temperature to operating temperature, meets the requirement of heating rate, is widely applied to the technical processes of water-coal (coke) slurry/multi-slurry gasification, pulverized coal gasification, residual oil gasification, natural gas conversion, three-waste (waste gas, waste liquid, waste solid) incineration, petrochemical industry and the like, and is used as a main burner of the gasifier, an incinerator, a heating furnace, a hot blast stove and the like.
Taking a water-coal (coke) slurry gasification process as an example, a startup burner widely used on a gasification furnace with a refractory brick lining at present consists of a box body (reference numeral 23), a traditional ignition rod (reference numeral 25) arranged on the box body, a traditional pilot burner (reference numeral 24), a traditional main burning gun (reference numeral 26), a traditional flame detector and the like, and the structure of the startup burner is shown in figure 6. The working process is as follows: firstly, starting an industrial furnace (reference numeral 6) to form negative pressure by operating the suction device, and enabling air to enter the industrial furnace through the air inlet; then the traditional ignition rod ignites to ignite the traditional pilot lamp; igniting the traditional main burning gun by a traditional pilot burner, and adjusting the load of the starting burner by the fuel flow fed into the traditional main burning gun; conventional flame detectors are used to detect flames during ignition and baking.
However, the current startup burner has a complex structure and more parts. When in ignition, the traditional ignition rod and the traditional pilot lamp are in the air flow, so that the ignition success rate is lower, and therefore, partial factories still adopt a manual ignition mode outside the furnace, the working condition is bad, and the degree of automation is low. Particularly, for the four-nozzle coal water slurry gasification process, the diameter of the gasifier mouth is smaller (phi 180-240 mm), a pilot burner cannot be arranged normally due to the narrow space, but the air flow speed is faster instead, so that the flame structure of the traditional main combustion gun is more difficult, and the blow-out risk is higher. And the traditional flame detector often gives a false alarm, is unfavorable for detecting flame in the furnace, and has potential safety hazard.
Disclosure of Invention
In order to overcome the defects in the prior art, the inventor performs intensive research and provides an integrated gun for a startup burner, a using method and an industrial furnace, and the startup burner structure is simplified, the operating condition is improved, the automation degree is improved, the reliability of the startup burner device is improved, and the potential safety hazard in the using process is reduced through the structural design of the integrated gun, so that the invention is completed.
The technical scheme provided by the invention is as follows:
in the first aspect, the integrated gun for the startup burner comprises a central pilot lamp, an inner first channel, an outer second channel and an integrated gun nozzle which are coaxially sleeved, wherein the rear part of the integrated gun nozzle is respectively connected with the pilot lamp, the first channel and the second channel; a first inlet is arranged behind the first channel and used for introducing fuel medium, and a second inlet is arranged behind the second channel and used for introducing fuel medium, atomizing agent or oxidant;
the pilot burner comprises a central gas pipe, an outer air pipe, an ignition rod, a central gas spray head and an ignition/fire detection control box which are coaxially sleeved, wherein the front end of the central gas pipe is connected with the central gas spray head, and the rear end of the central gas pipe is a fuel gas inlet; the front end of the outer air pipe is connected with the integrated gun nozzle, the rear side wall is provided with an air inlet, and the tail part is an ignition/fire detection control box; the ignition rod is arranged in an annular channel formed by the central gas pipe and the air pipe, the front end of the ignition rod is close to the central gas nozzle, and the rear end of the ignition rod is fixed in the ignition/fire detection control box and is used for igniting the pilot lamp; the ignition/fire detection control box is used for controlling the ignition of the pilot burner and detecting the flame of the pilot burner.
The second aspect is a startup burner, comprising the integrated gun, the fire detection system, the burner mounting seat and the site control box according to the first aspect; the integrated gun is arranged on the burner mounting seat and is a combustion device of a starting burner;
the fire detection system is arranged on the burner mounting seat, is in signal connection with the field control box, and is used for detecting flame conditions at the position of the integrated gun nozzle and sending detection data to the field control box;
the burner mounting seat is in butt joint with the combustion chamber of the industrial furnace, so that the integrated gun nozzle enters the combustion chamber of the industrial furnace;
the on-site control box is respectively connected with the ignition/fire detection control box and the fire detection system through signals, so that on-site control of ignition and flame detection is realized, and meanwhile, control signals are transmitted to the central control DCS, and remote control is implemented.
In a third aspect, a method for using a startup burner includes the steps of:
the fuel gas and the oxidant are respectively sent into a central gas pipe and an outer air pipe through a fuel gas inlet and an air inlet of the pilot burner according to a proportion, and an ignition/fire detection control box controls the front end of an ignition rod to ignite, so that the fuel gas is ignited, and the pilot burner is successfully ignited;
introducing a fuel medium into the first channel from the first inlet, introducing a fuel medium, an atomizing agent or an oxidizing agent into the second channel from the second inlet, and igniting the fuel medium by the flame of the pilot burner, wherein the ignition of the integrated gun is successful; the fire detection system detects the flame condition at the nozzle of the integrated gun and sends detection data to the field control box;
during fire extinguishing, fuel medium is stopped from being supplied into the integrated gun and the pilot burner, and purging is completed for each channel.
In a fourth aspect, an industrial furnace is provided with the start-up burner device of the second aspect in butt joint with a combustion chamber, and the industrial furnace comprises, but is not limited to, a gasification furnace, an incinerator, a heating furnace and a hot blast stove.
The integrated gun for the startup burner, the using method and the industrial furnace provided by the invention have the following beneficial effects:
(1) The integrated gun for the startup burner integrates the functions of ignition, pilot lamps, flame detection, main combustion guns and the like, so that the overall structure of the burner is simple; meanwhile, the diameter of the required furnace mouth is reduced, and the method is particularly suitable for small furnace mouth gasifiers such as a four-nozzle coal water slurry gasification process and the like;
(2) According to the integrated gun for the startup burner, the using method and the industrial furnace, the ignition process is completed in the pilot lamp, so that the ignition process is not influenced by external air flow basically, and the ignition is easier; the pilot lamp head part adopts a part of premixing structure, so that the combustion is stable, and the flame rigidity is strong;
(3) The invention provides an integrated gun for a startup burner, a using method and an industrial furnace, wherein a pilot lamp of the integrated gun adopts fire detection and camera double-insurance setting to detect ignition and flame conditions, and the fire detection outputs a switching value signal for central control interlocking; the camera outputs video signals for manual judgment, so that the safety and reliability of the baking process can be ensured;
(4) The integrated gun for the startup burner, the using method and the industrial furnace provided by the invention have high automation degree, can realize full-automatic operation, and basically do not need to leave a person on site;
(5) The integrated gun for the startup burner, the startup burner and the using method provided by the invention have wide application range, can burn natural gas, liquefied petroleum gas, purge gas and other gas fuels, and can also burn diesel oil and other liquid fuels; the two types are designed according to working conditions such as negative pressure natural ventilation, positive pressure forced ventilation and the like, so that the method can be applied to most of the mainstream gasification processes at present and can be popularized and applied to most of chemical industry furnaces.
Drawings
FIG. 1 is a schematic view of an integrated gun structure according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural view of an integrated gun nozzle provided by the invention;
FIG. 4 is a schematic structural view (type I) of a novel integrated startup burner device provided by the invention;
FIG. 5 is a schematic structural diagram (type II) of a novel integrated startup burner device provided by the invention;
fig. 6 is a schematic structural view of a typical startup burner of the prior art.
Description of the reference numerals
1-an integrated gun; 2-a fire detection system; 2 a-fire viewing channel; 2 b-purge gas inlet; 2 c-cutting off the ball valve; 2 d-fire detection camera device; 3-I type burner mounting seat; 3 A-An air channel; 3 b-an air introduction port; 3 c-top closure; 3 d-mounting flanges; 3 e-damper; a 4-II type burner mounting seat; 4 A-A housing; 4 b-mounting flanges; 4 c-refractory castable; 5-a field control box; 6-an industrial furnace; 7-a pilot lamp; 8-a first channel; 9-a second channel; 10-flame stabilizing cover; 11-an integrated gun nozzle; 11 A-Atomizer; 12-a first inlet; 13-a second inlet; 14-flame holders; 14 a-fire observation holes; 14 b-ignition bar fixing holes; 15-center gas nozzle; 15 a-forward injection hole; 15 b-lateral injection holes (n); 16-a central gas pipe; 17-an air tube; 18-an ignition rod; 19-ignition bar supports (N); 20-ignition/fire detection control box; 20 A-A bottom plate; 20 b-a protective cover; 20 c-flame detector; 20 d-a camera; 20 e-electric igniter; 20 f-fire detection controller; 20 g-video server; 20 h-quartz glass window; 21-a fuel gas inlet; 22-air inlet; 23-a box body; 24-a traditional pilot lamp; 25-a conventional ignition bar; 26-conventional main combustion gun.
Detailed Description
The features and advantages of the present invention will become more apparent and clear from the following detailed description of the invention.
According to a first aspect of the present invention, there is provided an integrated gun for a startup burner, as shown in fig. 1, including a central pilot burner 7 coaxially arranged, an inner first channel 8, an outer second channel 9, and an integrated gun nozzle 11, wherein the rear part of the integrated gun nozzle 11 is respectively connected with the pilot burner 7, the first channel 8, and the second channel 9, and a flame stabilizing cover 10 can be further arranged on the outer side; a first inlet 12 is arranged behind the first channel 8 (such as a rear side wall) and is used for introducing fuel medium, and a second inlet 13 is arranged behind the second channel 9 (such as a rear side wall) and is used for introducing fuel medium, atomizing agent or oxidant;
the pilot burner 7 comprises a central gas pipe 16, an outer air pipe 17, an ignition rod 18, a central gas spray head 15 and an ignition/fire detection control box 20 which are coaxially sleeved, wherein the front end of the central gas pipe 16 is connected with the central gas spray head 15, and the rear end of the central gas pipe is provided with a fuel gas inlet 21; the front end of the outer air pipe 17 is connected with the integrated gun nozzle 11, the rear side wall is provided with an air inlet 22, and the tail part is provided with an ignition/fire detection control box 20; the ignition rod 18 is arranged in an annular channel formed by the central gas pipe 16 and the air pipe 17, the front end is close to the central gas nozzle 15, the rear end is fixed in the ignition/fire detection control box 20, and N (N is more than or equal to 2) ignition rod supporting pieces 19 which are arranged at equal intervals in the middle are fixed on the outer wall of the central gas pipe 16 and used for igniting the pilot lamp 7; the ignition/fire detection control box 20 is in signal connection with the external field control box 5, and is used for controlling the ignition of the pilot burner 7 and detecting the flame of the pilot burner, and sending detection data to the field control box 5.
In a preferred embodiment of the present invention, a ring-shaped flame holder 14 is erected from the outside of the central gas nozzle 15 to the inside of the air pipe 17, and an ignition rod fixing hole 14b is provided on the flame holder 14 for fixing the front end of the ignition rod 18.
Further, the front end face of the pilot burner central gas nozzle 15 is provided with a forward injection hole 15a, and n (n is greater than or equal to 2) lateral injection holes 15b are uniformly arranged on the side wall, as shown in fig. 2. The side injection holes 15b are located behind the pilot burner flame holder 14. The design of the lateral spray hole can enable part of fuel gas to be premixed with air in the pilot lamp, is more convenient to ignite by the ignition rod, and can improve the stability of the flame of the pilot lamp; the proportion of premix fuel gas can be regulated by the number n of side injection holes.
In a preferred embodiment of the present invention, the ignition/fire detection control box 20 includes a base plate 20a, a protective cover 20b, an electric igniter 20e, a flame detector 20c, a camera 20d, a fire detection controller 20f and a video server 20g, for igniting the pilot lamp 7 and detecting the flame thereof. Wherein the flame detector 20c is an ultraviolet or infrared flame detector and is connected with the fire detection controller 20f, and the fire detection controller 20f outputs a switching value signal which is transmitted to the DCS through the field control box 5 of the starting burner for central control interlocking; the electric igniter 20e is connected with the rear end part of the ignition rod 18, and the ignition rod 18 is controlled to strike fire after being electrified; the camera 20d is connected with the video server 20g, performs video monitoring on the pilot burner flame, outputs video signals to the video server 20g, and the video signals output by the video server 20g are transmitted to the DCS through the site control box 5 for manual judgment.
Further, a base plate glass window 20h is provided on the base plate 20a of the ignition/fire detection control box 20 at the flame detector 20c and the camera 20d, and a fire observation hole 14a is provided on the pilot burner flame holder 14, wherein the base plate glass window 20h is opposite to the flame holder fire observation hole 14a, and together form an optical path of the flame detector 20c and the camera 20 d.
In a preferred embodiment of the present invention, the pilot lamp fuel gas inlet 21 is supplied with fuel gas such as natural gas, liquefied petroleum gas, purge gas, etc.; the air inlet 22 supplies air, oxygen or other gaseous oxidant.
According to a second aspect of the present invention, there is provided a startup burner, as shown in fig. 3 and 4, comprising the integrated gun 1, fire detection system 2, burner mount and field control box 5 of the first aspect; the integrated gun 1 is arranged on a burner mounting seat and is a combustion device of a starting burner;
the fire detection system 2 is arranged on the burner mounting seat, is in signal connection with the field control box 5, and is used for detecting flame conditions at the position of the integrated gun nozzle 11 and sending detection data to the field control box 5;
the burner mounting seat is in butt joint with the combustion chamber of the industrial furnace 6, so that the integrated gun nozzle 11 enters the combustion chamber of the industrial furnace;
the field control box 5 is respectively connected with the ignition/fire detection control box 20 and the fire detection system 2 of the integrated gun 1 in a signal manner, so that the ignition and flame detection can be controlled in situ, and meanwhile, a control signal is transmitted to a central control (DCS) to realize remote control and the local/remote control switching can be performed.
In a preferred embodiment of the present invention, the fire detection system 2 is disposed on the burner mounting seat, and comprises at least one group (preferably two groups) of fire observation channels 2a, which are disposed or symmetrically disposed (when more than two groups) around the integrated gun 1, and form an included angle of 0-45 degrees with the central axis of the integrated gun 1; the front end of the fire observing channel 2a is aligned with the flame at the position of the integrated gun nozzle 11, a purge gas inlet 2b is arranged on the rear side wall of the fire observing channel, the rear end of the fire observing channel is provided with a fire observing channel cutting-off ball valve 2c and a fire detecting and shooting device 2d behind the fire observing channel, the fire observing channel 2a forms an observing light path of the flame at the position of the integrated gun nozzle 11, the purge gas inlet 2b injects purge gas (such as air, nitrogen or carbon dioxide and the like) into the fire observing channel 2a to keep the light path clean, the cutting-off ball valve 2c and the fire detecting and shooting device 2d are connected with a field control box 5 through signals, the cutting-off ball valve 2c receives an instruction sent by the field control box 5 to control the on-off of the light path, and the fire detecting and shooting device 2d carries out video monitoring on the flame at the position of the integrated gun nozzle 11 and outputs video signals to the field control box 5.
Further, the fire detection camera device 2d of the fire detection system 2 may be one or two of an ultraviolet fire detection camera and an infrared fire detection camera, or may be fire detection and camera shooting integrated fire detection.
Further, the outermost sides of the integrated gun 1 and the fire observing channel 2a can be provided with cooling water jackets according to the requirement, the cooling water jackets are of double-layer structures, and the cooling water is led in from the inner side to the outer side or led out from the outer side to the inner side. The cooling water should remain in full service from ignition.
In a preferred embodiment of the invention, the burner mount comprises two forms depending on the conditions of use: i type nozzle mount pad 3 and II type nozzle mount pad 4:
as shown in fig. 3, the i-type burner mounting seat 3 comprises an air channel 3a, an air inlet 3b on the side wall of the air channel, a top cover 3c and a bottom mounting flange 3d, wherein a damper 3e is arranged in the air inlet 3b and is used for air supply and air quantity regulation of the combustion chamber; the integrated gun 1 and the fire detection system 2 are fixed on the top end cover 3c, and the bottom mounting flange 3d is in butt joint with the inlet of the combustion chamber of the industrial furnace, so that the assembly of the integrated gun 1 and the combustion chamber of the industrial furnace is realized together. The I-type burner mounting seat is applied to the working condition of natural ventilation or air supply from the mounting seat through a blower. Because the combustion chamber of the industrial furnace is under the condition of slight negative pressure, the fire observation channel 2a of the fire detection system 2 cannot be subjected to high pressure, and the cut-off ball valve 2c is not required to be arranged.
As shown in fig. 4, the type ii burner mount 4 includes a housing 4a, a top mounting flange 4b, and a refractory castable 4c; the shell 4a stretches into the inlet of the combustion chamber of the industrial furnace and is matched with the wall surface of the inlet of the combustion chamber, the integral gun 1 and the fire detection system 2 are fixed on the mounting flange 4b, the front end of the fire detection channel 2a of the fire detection system 2 is flush with the integral gun nozzle 11 or is retracted into the refractory castable 4c, and the refractory castable 4c fills the gap formed among the shell 4a in the inner part of the II-type burner mounting seat 4, the integral gun 1 and the fire detection channel 2 a. The II-type burner mounting seat is applied to the working condition that positive pressure is forced to supply air by the integrated gun 1.
In a preferred embodiment of the invention, the working medium fed in the first channel 8 and the second channel 9 of the integrated gun 1 is determined according to the type of air supply and the type of fuel (gas, liquid) and is matched with the structure of the integrated gun nozzle 11. Specifically:
(i) The mounting seat supplies air (I-shaped burner mounting seat), and fuel gas such as natural gas is supplied to the inner side first channel 8 and the outer side second channel 9 for burning gas fuel. The gas is supplied only from the first channel 8 at the inner side under low load, and the gas is supplied from the second channel 9 at the outer side under high load, so that the requirement of large regulation ratio of the load of the burner can be realized. In this case, as shown in fig. 5 (a), the integral gun nozzle 11 has an independent outlet from the integral gun nozzle 11 in the inner first passage 8 and the outer second passage 9.
(ii) The mounting seat supplies air (I-shaped burner mounting seat), liquid fuel is burned, liquid fuel such as diesel oil is supplied to the inner side first channel 8, and atomizing agents such as steam and air are supplied to the outer side second channel 9. The liquid fuel is atomized by the atomizing agent in the form of medium atomization, and the integrated gun nozzle 11 is structured as shown in fig. 5 (C), and the inner first channel 8 communicates with the outlet of the outer second channel 9.
(iii) The gun body is forced to supply air (II type burner mounting seat), gas fuel is used for burning, fuel gas such as natural gas is supplied to the inner side first channel 8, and gas oxidant such as air and oxygen is supplied to the outer side second channel 9. In this case, as shown in fig. 5 (B), the integral gun nozzle 11 has an independent outlet from the integral gun nozzle 11 in the inner first passage 8 and the outer second passage 9.
(iv) The gun body is forced to supply air (II type burner mounting seat), liquid fuel is burnt, liquid fuel such as diesel oil is supplied to the first channel 8 on the inner side, and gas oxidant such as air and oxygen is supplied to the second channel 9 on the outer side. The first inner passage 8 atomizes the liquid fuel by the atomizer 11a in a mechanical atomizing mode, and the integrated gun nozzle 11 has a structure as shown in fig. 5 (D), and the first inner passage 8 and the second outer passage 9 have independent outlets on the integrated gun nozzle 11. The oxidant can also be used as an atomizing agent at the same time, and a medium atomizing mode is adopted, and the structure of the integrated gun nozzle 11 can be adopted as shown in fig. 5 (C).
(v) The mount supplies air (i-type burner mount) while burning fuel gas and liquid fuel, the inner first passage 8 supplies liquid fuel such as diesel oil, and the outer second passage 9 supplies fuel gas such as natural gas. The first inner passage 8 atomizes the liquid fuel by the atomizer 11a in a mechanical atomizing mode, and the integrated gun nozzle 11 has a structure as shown in fig. 5 (E), and the first inner passage 8 and the second outer passage 9 have independent outlets on the integrated gun nozzle 11.
(vi) The mount pad air supply (i type nozzle mount pad), burn fuel gas and liquid fuel simultaneously, inboard first passageway 8 supplies liquid fuel such as diesel oil, and middle second passageway 9 supplies atomizing agent such as steam, air. The liquid fuel is atomized by the atomizing agent in the form of medium atomization. When the outer third passage is present, the third passage is supplied with fuel gas such as natural gas. In this case, as shown in fig. 5 (F), the integral gun nozzle 11 has a structure in which the inner first channel 8 communicates with the outlet of the outer second channel 9, and the third channel has an independent outlet in the integral gun nozzle 11.
The first channel 8 and the second channel 9 are exemplary, only one of the first channel and the second channel can be reserved according to the requirement, and a third channel or more can be added outside the second channel 9 according to the requirement. Similarly, the fuel type may be selected from one of the gaseous fuel and the liquid fuel, or may be selected from both of them at the same time, as required.
According to a third aspect of the present invention, there is provided a method of using a startup burner, comprising the steps of:
the fuel gas and the oxidant (such as air) are respectively sent into the central gas pipe 16 and the outer air pipe 17 through the pilot burner fuel gas inlet 21 and the air inlet 22 according to the proportion, the ignition/fire detection control box 20 controls the front end of the ignition rod 18 to ignite, the fuel gas is ignited, and the pilot burner 7 is successfully ignited;
a fuel medium is introduced into the first channel 8 through the first inlet 12, a fuel medium, an atomizing agent or an oxidizing agent is introduced into the second channel 9 through the second inlet 13, the fuel medium is ignited by the flame of the pilot burner 7, and the integrated gun 1 is successfully ignited; the fire detection system 2 detects the flame condition at the position of the integrated gun nozzle 11 and sends detection data to the field control box 5;
during fire extinguishing, the supply of the fuel medium into the integrated gun 1 and the pilot burner 7 is stopped, and purging of each passage is completed.
Further, the use method when the I-type burner mounting seat is adopted comprises the following steps:
before ignition, ensuring that a start-up pumping system or an air blower works normally, ensuring that the gas composition in the furnace is qualified for analysis, and avoiding explosion risk;
during ignition, firstly, the opening of a throttle valve 3e in an air inlet 3b of the I-type burner mounting seat 3 is adjusted to be 10% -30%; then the electric igniter 20e of the pilot burner is powered, the front end of the ignition rod 18 fires, fuel gas and oxidant (such as air) are respectively sent into the central fuel gas pipe 16 and the outer air pipe 17 through the fuel gas inlet 21 and the air inlet 22 of the pilot burner in proportion, the fuel gas and the oxidant sprayed out from the lateral spray holes 15b of the central fuel gas spray head are fully mixed and then ignited by electric sparks, the flame is detected and confirmed by the flame detector 20c of the pilot burner and the camera 20d, the electric igniter 20e stops supplying power, and the pilot burner 7 fires successfully; then, a fuel medium (such as fuel gas or liquid fuel) is introduced into the first channel 8 through the first inlet 12, and a fuel medium, an atomizing agent or an oxidizing agent is introduced into the second channel 9 through the second inlet 13, and is ignited by the flame of the pilot burner 7, so that the integral gun 1 is successfully ignited; the load of the startup burner is adjusted by adjusting the flow rate of the fuel medium fed into the integrated gun 1 and the opening of the air damper 3e, and the flame of the integrated gun 1 can be detected by the fire detection system 2 in the whole course;
during fire extinguishing, the supply of the fuel medium into the integrated gun 1 and the pilot burner 7 is stopped, and purging of each passage is completed. When the integrated start-up burner is used for the gasification furnace, the integrated start-up burner is integrally lifted off the gasification furnace after the furnace baking is finished.
Further, the use method when the II-type burner mounting seat is adopted comprises the following steps:
before ignition, nitrogen is used for replacing the furnace, and the gas composition in the furnace is ensured to be qualified for analysis, so that the explosion risk is avoided;
during ignition, firstly, the electric igniter 20e of the pilot burner 7 is powered, the front end of the ignition rod 18 ignites, meanwhile, fuel gas and oxidant (such as air) are respectively sent into the central fuel gas pipe 16 and the outer air pipe 17 through the pilot burner fuel gas inlet 21 and the air inlet 22 in proportion, the fuel gas sprayed from the lateral spray holes 15b of the central fuel gas spray head is fully mixed with the oxidant and then ignited by electric sparks, the flame is detected and confirmed by the pilot burner flame detector 20c and the camera 20d, the electric igniter 20e stops supplying power, and the pilot burner 7 is successfully ignited; then, a fuel medium (such as fuel gas or liquid fuel) is introduced into the first channel 8 through the first inlet 12, and a fuel medium, an atomizing agent or an oxidizing agent is introduced into the second channel 9 through the second inlet 13, and is ignited by the flame of the pilot burner 7, so that the integrated gun 1 is successfully ignited; the load of the starting burner is regulated by regulating the flow of the fuel medium and the flow of the gas oxidant fed into the integrated gun 1, and the industrial furnace is heated to a preset temperature to finish the baking, so that the flame of the integrated gun 1 can be detected by the fire detection system 2 in the whole course;
during fire extinguishing, the supply of fuel medium into the integrated gun 1 and the pilot burner 7 is stopped, and after purging of each passage is completed, a protective gas such as nitrogen gas is continuously introduced into each passage. At this time, the integrated startup burner can be unnecessary to be detached from the furnace body.
According to a fourth aspect of the present invention there is provided an industrial furnace provided with a start-up burner arrangement according to the second aspect in butt joint with a combustion chamber, the industrial furnace including but not limited to a gasifier, an incinerator, a heating furnace, a hot blast stove.
Examples
Example 1
When the startup burner device is applied to a certain item of firebrick pressurized gasification furnace, the technical parameters are as follows:
ventilation mode-start-up suction device for sucking air for natural ventilation, and I-shaped burner mounting seat is configured
Fuel type-liquefied petroleum gas
Design load-500 x 10 4 kCal/h
The pilot burner fuel gas inlet 21 is fed with 1.5Nm 3 The air inlet 22 is fed with 30 Nm/h LPG 3 Meter air/h. The first channel 8 at the inner side and the second channel 9 at the outer side of the integrated gun are both supplied with liquefied petroleum gas, and the structure of the integrated gun nozzle 11 is shown in fig. 5 (A); wherein, when 10 to 30 percent of load is applied, only the inner side first channel 8 supplies air, and when 30 to 100 percent of load is applied, the outer side second channel 9 starts to supply air.
The outer diameter of the integrated gun is 90mm, and the integrated gun can be applicable to all gasifiers with furnace openings larger than 180 mm.
When the gasification furnace is used, the startup burner device is firstly arranged at the burner port of the gasification furnace; the ignition, load adjustment, flame detection, stopping and other processes of the starting burner are completed in a central control room, and no operation is needed on site, so that the operation flow is greatly simplified; finally heating the temperature of the gasifier to 1200 ℃; after use, the startup burner device is lifted off the gasification furnace.
Example 2
When the startup burner device is applied to a certain item of firebrick pressurized gasification furnace, the technical parameters are as follows:
fuel and oxidant type-natural gas + oxygen, configuration II type burner mounting seat
Design load-maximum natural gas flow 1000Nm 3 /h
The pilot burner fuel gas inlet 21 is fed with 2Nm 3 Gas/h, air inlet 22 feeds 20Nm 3 Meter air/h. The first channel 8 on the inner side of the integrated gun is supplied with natural gas, the second channel 9 on the outer side is supplied with oxygen, and the structure of the integrated gun nozzle 11 is shown in fig. 5 (B).
When the gasification furnace is used, the startup burner device is firstly arranged at the burner port of the gasification furnace; the ignition, load adjustment, flame detection, stopping and other processes of the starting burner are completed in a central control room, and no operation is needed on site, so that the operation flow is greatly simplified; the gasifier temperature was finally heated to 1400 ℃. After the burner device is used, the burner device is not disassembled, and nitrogen is continuously introduced into each channel to serve as protective gas; when the pressure of the gasification furnace is higher than 2MPa, the cut-off ball valve 2c of the fire detection system 2 is closed. The disassembly-free design of the startup burner avoids disassembly and assembly of the burner in a hot state, and reduces the startup potential safety hazard.
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these fall within the scope of the present invention. The scope of the invention is defined by the appended claims.
What is not described in detail in the present specification is a well known technology to those skilled in the art.

Claims (13)

1. The integrated gun for the startup burner is characterized by comprising a central pilot lamp (7), an inner first channel (8), an outer second channel (9) and an integrated gun nozzle (11), wherein the central pilot lamp, the inner first channel (8) and the outer second channel (9) are coaxially sleeved, and the rear part of the integrated gun nozzle (11) is respectively connected with the pilot lamp (7), the first channel (8) and the second channel (9); a first inlet (12) is arranged behind the first channel (8) and is used for introducing fuel medium, and a second inlet (13) is arranged behind the second channel (9) and is used for introducing fuel medium, atomizing agent or oxidant;
the pilot burner (7) comprises a central gas pipe (16), an outer air pipe (17), an ignition rod (18), a central gas nozzle (15) and an ignition/fire detection control box (20) which are coaxially arranged, wherein the front end of the central gas pipe (16) is connected with the central gas nozzle (15), and the rear end of the central gas pipe is provided with a fuel gas inlet (21); the front end of the outer air pipe (17) is connected with the integrated gun nozzle (11), the rear side wall is provided with an air inlet (22), and the tail part is provided with an ignition/fire detection control box (20); the ignition rod (18) is arranged in an annular channel formed by the central gas pipe (16) and the outer air pipe (17), the front end of the ignition rod is close to the central gas nozzle (15), and the rear end of the ignition rod is fixed in the ignition/fire detection control box (20) and is used for igniting the pilot lamp (7); the ignition/fire detection control box (20) is used for controlling the ignition of the pilot burner (7) and detecting the flame of the pilot burner;
an annular flame stabilizer (14) is erected from the outer side of the central gas nozzle (15) to the inner side of the outer air pipe (17), and an ignition rod fixing hole (14 b) is formed in the flame stabilizer (14) and used for fixing the front end of an ignition rod (18);
the front end face of the pilot burner central gas nozzle (15) is provided with a forward jet hole (15 a), n lateral jet holes (15 b) are uniformly arranged on the side wall, n is more than or equal to 2, and the lateral jet holes (15 b) are positioned behind the pilot burner flame stabilizer (14).
2. The integrated gun for startup burner according to claim 1, wherein the ignition/fire detection control box (20) comprises a bottom plate (20 a), a protective cover (20 b), an electric igniter (20 e), a flame detector (20 c), a camera (20 d), a fire detection controller (20 f) and a video server (20 g) for performing ignition of a pilot lamp (7) and detecting flame thereof; the flame detector (20 c) is connected with the fire detection controller (20 f), and the fire detection controller (20 f) outputs a switching value signal for central control interlocking; the electric igniter (20 e) is connected with the rear end part of the ignition rod (18), and the ignition rod (18) is controlled to ignite after the electric igniter is electrified; the camera (20 d) is connected with the video server (20 g), performs video monitoring on flames of the pilot burner, outputs video signals to the video server (20 g), and the video server (20 g) outputs video signals for manual judgment.
3. The integrated gun for startup burner according to claim 1, characterized in that the bottom plate (20 a) of the ignition/fire detection control box (20) is provided with a bottom plate glass window (20 h) at the flame detector (20 c) and the camera (20 d), the pilot lamp flame holder (14) is provided with a flame viewing hole (14 a), wherein the bottom plate glass window (20 h) is opposite to the flame holder flame viewing hole (14 a) and jointly forms the optical paths of the flame detector (20 c) and the camera (20 d).
4. A start-up burner, characterized by comprising an integrated gun (1) according to one of claims 1 to 3, a fire detection system (2), a burner mounting seat and a site control box (5); the integrated gun (1) is arranged on the burner mounting seat and is a combustion device of a starting burner;
the fire detection system (2) is arranged on the burner mounting seat, is in signal connection with the field control box (5), and is used for detecting flame conditions at the integrated gun nozzle (11) and sending detection data to the field control box (5);
the burner mounting seat is in butt joint with a combustion chamber of the industrial furnace (6), so that the integrated gun nozzle (11) enters the combustion chamber of the industrial furnace;
the on-site control box (5) is respectively connected with the ignition/fire detection control box (20) and the fire detection system (2) in a signal manner, so that on-site control of ignition and flame detection is realized, and meanwhile, a control signal is transmitted to the central control DCS, and remote control is implemented.
5. The start-up burner according to claim 4, characterized in that the fire detection system (2) is arranged on a burner mount and comprises at least one set of fire viewing channels (2 a) arranged around the integrated gun (1); the front end of the fire observation channel (2 a) is aligned to the flame at the integrated gun nozzle (11), the side wall of the fire observation channel is provided with a purge gas inlet (2 b), the rear end of the fire observation channel is provided with a fire detection shooting device (2 d) for cutting off a ball valve (2 c) and a valve of the fire observation channel, the fire observation channel (2 a) forms an observation light path of the flame at the integrated gun nozzle (11), the purge gas inlet (2 b) injects purge gas into the fire observation channel (2 a), the ball valve (2 c) is cut off, the fire detection shooting device (2 d) is connected with a field control box (5) in a signal manner, the ball valve (2 c) is cut off, the fire detection shooting device (2 d) receives an instruction sent by the field control box (5) to control the on-off of the light path, and the fire detection shooting device (2 d) carries out video monitoring on the flame at the integrated gun nozzle (11) and outputs video signals to the field control box (5).
6. The startup burner according to claim 4, wherein a cooling water jacket can be arranged at the outermost side of the integrated gun (1) and the fire observing channel (2 a) according to requirements, the cooling water jacket is of a double-layer structure, and cooling water is led in from the inner side to the outer side or led out from the outer side to the inner side.
7. The startup burner according to claim 4, characterized in that the burner mount is a type i burner mount (3), the type i burner mount (3) comprising an air channel (3 a) and an air intake (3 b) in the side wall thereof, a top cover (3 c) and a bottom mounting flange (3 d), wherein a damper (3 e) is provided in the air intake (3 b) for the supply and air volume regulation of the combustion chamber; the top sealing cover (3 c) is fixedly provided with the integrated gun (1) and the fire detection system (2), the bottom mounting flange (3 d) is in butt joint with the inlet of the combustion chamber of the industrial furnace, and the integrated gun (1) and the combustion chamber of the industrial furnace are assembled together.
8. The startup burner according to claim 4, characterized in that the burner mount is a type ii burner mount (4), the type ii burner mount (4) comprising a housing (4 a), a top mounting flange (4 b) and a refractory castable (4 c); the shell (4 a) stretches into the inlet of the combustion chamber of the industrial furnace and is matched with the wall surface of the inlet of the combustion chamber, the integrated gun (1) and the fire detection system (2) are fixed on the top mounting flange (4 b), the front end of the fire detection channel (2 a) of the fire detection system (2) is flush with the integrated gun spray head (11) or is retracted into the refractory castable (4 c), and the refractory castable (4 c) fills the gap formed among the inner shell (4 a) of the II-type burner mounting seat (4), the integrated gun (1) and the fire detection channel (2 a).
9. The startup burner according to claim 4, characterized in that the first channel (8), the second channel (9) only remain one, or a third channel or more is added outside the second channel (9).
10. A method of using the start-up burner of any one of claims 4 to 9, comprising the steps of:
the fuel gas and the oxidant are respectively sent into a central fuel gas pipe (16) and an outer air pipe (17) through a pilot burner fuel gas inlet (21) and an air inlet (22) according to the proportion, an ignition/fire detection control box (20) controls the front end of an ignition rod (18) to ignite, the fuel gas is ignited, and the pilot burner (7) is successfully ignited;
introducing a fuel medium into the first channel (8) through the first inlet (12), introducing a fuel medium, an atomizing agent or an oxidizing agent into the second channel (9) through the second inlet (13), and igniting the fuel medium by the flame of the pilot burner (7), wherein the integral gun (1) is successfully ignited; the fire detection system (2) detects the flame condition at the position of the integrated gun nozzle (11) and sends detection data to the field control box (5);
during fire extinguishing, the supply of fuel medium into the integrated gun (1) and the pilot burner (7) is stopped, and the purging of each passage is completed.
11. The method of claim 10, wherein when a type i burner mount is used, comprising the steps of:
before ignition, ensuring that a start-up pumping system or an air blower works normally, ensuring that the gas composition in the furnace is qualified for analysis, and avoiding explosion risk;
during ignition, firstly, the opening of a damper (3 e) in an air inlet (3 b) of the I-type burner mounting seat (3) is adjusted; then, the electric igniter (20 e) of the pilot burner is powered, the front end of the ignition rod (18) fires, fuel gas and oxidant are respectively sent into the central gas pipe (16) and the outer air pipe (17) through the fuel gas inlet (21) and the air inlet (22) of the pilot burner in proportion, the fuel gas and the oxidant sprayed out from the lateral spray hole (15 b) of the central gas nozzle are fully mixed and then ignited by an electric spark, the flame is detected and confirmed by the flame detector (20 c) of the pilot burner and the camera (20 d), the electric igniter (20 e) stops powering, and the pilot burner (7) is successfully ignited; then, a fuel medium is introduced into the first channel (8) through the first inlet (12), a fuel medium, an atomizing agent or an oxidizing agent is introduced into the second channel (9) through the second inlet (13), and is ignited by the flame of the pilot burner (7), so that the integrated gun (1) is successfully ignited; the load of the starting burner is adjusted by adjusting the flow rate of the fuel medium fed into the integrated gun (1) and the opening of the air damper (3 e), and the whole flame of the integrated gun (1) is detected by the fire detection system (2);
during fire extinguishing, fuel medium is stopped from being supplied into the integrated gun (1) and the pilot burner (7), purging is completed for each channel, and when the integrated burner is used for a gasification furnace, the integrated burner is integrally lifted away from the gasification furnace after the baking is finished.
12. The method of claim 10, wherein when a type II burner mount is used, comprising the steps of:
before ignition, nitrogen is used for replacing the furnace, and the gas composition in the furnace is ensured to be qualified for analysis, so that the explosion risk is avoided;
when in ignition, firstly, an electric igniter (20 e) of the pilot burner (7) is powered, the front end of an ignition rod (18) is ignited, meanwhile, fuel gas and oxidant are respectively fed into a central fuel gas pipe (16) and an outer air pipe (17) through a pilot burner fuel gas inlet (21) and an air inlet (22) in proportion, the fuel gas sprayed from a side spraying hole (15 b) of a central fuel gas nozzle is fully mixed with the oxidant and then ignited by an electric spark, flame is detected and confirmed by a pilot burner flame detector (20 c) and a camera (20 d), the electric igniter (20 e) stops supplying power, and the pilot burner (7) is successfully ignited; then, a fuel medium is introduced into the first channel (8) through the first inlet (12), a fuel medium, an atomizing agent or an oxidizing agent is introduced into the second channel (9) through the second inlet (13), and the fuel medium, the atomizing agent or the oxidizing agent is ignited by the flame of the pilot burner (7), so that the integrated gun (1) is successfully ignited; the load of a startup burner is regulated by regulating the flow of a fuel medium and the flow of a gas oxidant fed into the integrated gun (1), and the industrial furnace is heated to a preset temperature to finish baking, and the whole flame of the integrated gun (1) is detected by a fire detection system (2);
during fire extinguishing, fuel medium is stopped from being supplied into the integrated gun (1) and the pilot burner (7), and after purging is completed for each channel, protective gas is continuously supplied into each channel, and at the moment, the integrated startup burner can be not detached from the furnace body.
13. An industrial furnace provided with a start-up burner arrangement according to one of claims 4 to 9 in butt joint with a combustion chamber, said industrial furnace being a gasifier, incinerator, heating furnace or hot blast stove.
CN202110373195.4A 2021-04-07 2021-04-07 Integrated gun for startup burner, use method and industrial furnace Active CN113154393B (en)

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Publication number Priority date Publication date Assignee Title
JP4144805B2 (en) * 2004-08-24 2008-09-03 株式会社サムソン Combustion device that prevents heating of main burner by pilot flame
CN202482284U (en) * 2011-12-20 2012-10-10 西安航天远征流体控制股份有限公司 Integral ignition starting system
CN103822208A (en) * 2012-11-16 2014-05-28 航天长征化学工程股份有限公司 Burner of gasification furnace
CN103484166B (en) * 2013-09-25 2015-07-15 上海锅炉厂有限公司 Solid powder burner and use method thereof
CN104745234B (en) * 2013-12-31 2018-05-25 西安航天远征流体控制股份有限公司 A kind of new igniting startup burner
CN103849434A (en) * 2014-03-13 2014-06-11 杜建吉 Combined type coal water slurry nozzle provided with ignition device
CN108916875B (en) * 2018-09-12 2024-02-20 南京博纳能源环保科技有限公司 Low-nitrogen mixed combustion burner
CN112239679A (en) * 2020-11-16 2021-01-19 陕西宏远燃烧设备有限公司 Combined gasifier burner

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