CN103484166B - Solid powder burner and use method thereof - Google Patents
Solid powder burner and use method thereof Download PDFInfo
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- CN103484166B CN103484166B CN201310442392.2A CN201310442392A CN103484166B CN 103484166 B CN103484166 B CN 103484166B CN 201310442392 A CN201310442392 A CN 201310442392A CN 103484166 B CN103484166 B CN 103484166B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- 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
Abstract
The invention discloses a solid powder burner and a use method thereof. The solid powder burner is characterized by comprising a central channel, a circular channel and a cooling system, wherein a sweep gas inlet, a powder fuel inlet, and a liquid/gaseous fuel inlet are sequentially formed in the central channel inlet; a sweep gas inlet and an oxygen-rich gas inlet are sequentially formed in the circular channel inlet; conventional furnace-baking of a gasifier can be finished by firstly igniting the liquid/gaseous fuel; a furnace-baking burner, an ignition burner, and a production burner used in the multiple burner gasification technology can be integrated into a whole through performing sweeping and fuel switching. According to the invention, a starting-up burner, the ignition burner and the production burner are integrated into a whole, the overall ignition process of the gasifier is simplified, and the manufacturing cost is reduced, so that the solid powder burner has the characteristics of versatility, wide application, and long service life.
Description
Technical field
The present invention relates to a kind of solid powder fuel nozzle and using method thereof, belong to gasifying process burner technical field.
Background technology
Dry coal powder airflow bed gasification technology is as one of main flow gasification technology in current Coal Gasification Technology, its development course compares the simple of coal water slurry entrained flow bed gasification technology, from maximum one of different of coal water slurry gasification technology, namely have employed dry-coal feeding, raw material does not tell atomization at needs, only need can realize stable burning and gasification by particle dispersion, but owing to have employed cold wall type vapourizing furnace, vapourizing furnace when putting into operation not by simple baker, vapourizing furnace inner question is risen to more than 1300 DEG C and sprays into coal dust, because by Sweet natural gas or diesel oil baker just to getting through the steady running of water wall hydrodynamic system, also need the startup having coordinated dry coal dust gasification furnace coordinating igniter burner and process burner.The process of putting into operation of dry coal dust gasification furnace is simply expressed as follows.
Existing solid fuel airflow bed gasification furnace starting ignition process is complicated, igniter burner, startup burner and process burner three kinds of burners are adopted to combine the process of starting ignition successively, it first adopts igniter burner to light, then with startup burner, vapourizing furnace is heated to high temperature, high pressure conditions, restart process burner, in order to make process burner reach steady combustion state, startup burner will enter companion's burning stage in good time.The running condition of existing apparatus shows, this start-up course is complicated, and startup burner burner head in companion's burning process is very easy to burn out.
Chinese patent CN200610030864.3 discloses a kind of burner noz(zle) of dry coal powder pressure gasifying stove, it mainly adopts channel structure form, center-aisle and circular channel spray into coal dust and vaporized chemical respectively, as the process burner finally put into operation during normal operation, concrete as comparatively complicated in said process.Chinese patent CN200420114032.6 discloses the burner type of cooling different from patent CN200610030864.3, but remains channel structure setting, and function and effect are substantially identical.
In order to effectively solve in dry coal powder gasification process the multiple complicated link related to, needing to realize integral type from the function and structure of process burner and breaking through, simplify complicated vapourizing furnace startup procedure, and this integrated technique being always unresolved.
Summary of the invention
The technical problem to be solved in the present invention is to provide the solid powder fuel gasification compound burner of a kind of startup burner, process burner integration.
In order to solve the problems of the technologies described above, technical scheme of the present invention is a kind of solid powder fuel nozzle, it is characterized in that, comprises coaxially arranged centre channel and circular channel, one end of centre channel and one end of circular channel in the same plane, form the head of burner; The other end of centre channel exposes from circular channel, and this bared end is provided with 1 ~ 3 center channel inlet; Centre channel and circular channel are fixed by expanding channels Flange joint; Circular channel is provided with circular channel entrance, circular channel respectively with oxygen-containing gas pipeline, circular channel sweep gas pipeline communication; Be provided with cooling channel outside the head of circular channel, cooling channel and centre channel, circular channel are coaxially arranged; The both sides of cooling channel are communicated with coolant entrance, coolant outlet respectively, and coolant entrance, coolant outlet are fixed on outside burner head by side cooling jacket and front end joint flange.
Preferably, described centre channel is provided with a center channel inlet, this center channel inlet respectively with liquid/gas fuel channel, powder fuel pipeline, centre channel sweep gas pipeline communication.
Preferably, described centre channel is provided with 3 center channel inlet, is respectively liquid/gas fuel inlet, powder fuel entrance, centre channel sweep gas entrance; Liquid/gas fuel inlet is communicated with liquid/gas fuel channel, powder fuel entrance and powder fuel pipeline communication, centre channel sweep gas entrance and centre channel sweep gas pipeline communication.
Present invention also offers the using method of above-mentioned solid powder fuel nozzle, when gasifying process technology for single burner, it is characterized in that, operating process is as follows:
Step 1): open liquid/gas fuel channel, makes liquid/gas fuel pass into centre channel, closing center's passage sweep gas pipeline and powder fuel pipeline;
Step 2): then the oxygen-containing gas pipeline of ingress, circular channel is opened, oxygen-containing gas is passed into circular channel, after lighting solid powder fuel nozzle, burner is installed on vapourizing furnace, carry out baker operation;
After step 3) baker terminates, first close oxygen-containing gas pipeline, then closing liquid/geseous fuel pipeline passes into;
Step 4): open centre channel sweep gas passage, replaces gasification furnace gas;
Step 5): complete in vapourizing furnace after gas displacement, is installed on vapourizing furnace after being lighted by industrial conventional ignition burner;
Step 6): when gasification in-furnace temperature maintains regulation roast technic temperature, the powder fuel passage of solid powder fuel nozzle centre channel is opened, the front end of burner spout time is arrived according to tube side length and powder fuel flow velocity estimation powder fuel, again oxygen-containing gas passage is opened, now under the naked light of industrial conventional ignition burner is combustion-supporting, the powder fuel in solid powder fuel nozzle is lighted;
Step 7): close industrial conventional ignition burner after solid powder fuel nozzle forms stationary flame, now single fire mouth vapourizing furnace startup procedure terminates.
Preferably, in described oxygen-containing gas, the volumetric concentration of oxygen is more than or equal to 21%.
Preferably, described sweep gas is rare gas element, and described rare gas element is argon gas, nitrogen or helium.
Above-mentioned solid powder fuel nozzle is when being used for the gasifying process technology of multiple burner, and it is characterized in that, operating process is as follows:
Step 1): be all installed on vapourizing furnace by multiple solid powder fuel nozzle, opens except each circular channel sweep gas pipeline, the centre channel sweep gas pipeline for other solid powder fuel nozzles except baker solid powder fuel nozzle;
Step 2): the liquid/gas fuel channel opening baker solid powder fuel nozzle centre channel, close its centre channel sweep gas pipeline and powder fuel passage; Then the oxygen-containing gas pipeline of its ingress, circular channel is opened, be installed on vapourizing furnace after lighting this baker solid powder fuel nozzle, carry out baker operation;
Step 3): after baker terminates, other solid powder fuel nozzles are closed one by one circular channel sweep gas pipeline, centre channel sweep gas pipeline, open the powder fuel pipeline of one of them solid powder fuel nozzle, the front end of burner spout time is arrived according to tube side length and powder fuel flow velocity estimation powder fuel, again oxygen-containing gas pipeline is opened, now under the naked light of igniting solid powder fuel nozzle is combustion-supporting, powder fuel in solid powder fuel nozzle is lighted, and repeats above operation to the unlit burner of residue;
Step 4): after lighting other all solid powder fuel nozzles, closes oxygen-containing gas pipeline and the liquid/gas fuel channel of baker solid powder fuel nozzle, opens circular channel sweep gas pipeline and centre channel sweep gas pipeline, purge by sweep gas;
Step 5): open oxygen-containing gas passage and powder fuel pipeline after purging again, now this solid powder fuel nozzle sprays into logistics other solid powder fuel nozzle naked lights are combustion-supporting and to be lighted rapidly down, now completes the ignition process of all burners.
Preferably, in described oxygen-containing gas, the volumetric concentration of oxygen is more than or equal to 21%.
Preferably, described sweep gas is rare gas element, and described rare gas element is argon gas, nitrogen or helium.
A kind of solid powder fuel nozzle provided by the invention and using method thereof have following beneficial effect:
(1) adopt channel structure design, burner overall structure is simple, makes easy to maintenance.Can be used for the vaporizing system synthesis gas process of the carbon containing solid powder fuel such as dry pulverized coal, colliery powder, refinery coke, organic solid castoff, biomass powder, of many uses;
(2) powder fuel, liquid/gas fuel and sweep gas channel interface are set in centre channel, only adopt unified compound burner can complete baker, igniting and the operation of process burner composite integrated, enormously simplify the complex process that vapourizing furnace is driven;
(3) also formulated two kinds of different composite burner startup procedures respectively for single fire mouth and many burners vapourizing furnace described in patent of the present invention, it, while simplification startup procedure, substantially increases driving success ratio and reliability.
A kind of solid powder fuel nozzle provided by the invention and using method thereof overcome the deficiencies in the prior art, achieve the integration of startup burner, igniter burner, process burner, simplify whole vapourizing furnace ignition process, there is the feature of multifunctionality, of many uses, long service life.
Accompanying drawing explanation
The structural representation of the solid powder fuel nozzle that Fig. 1 provides for embodiment 1;
The structural representation of the solid powder fuel nozzle that Fig. 2 provides for embodiment 2.
Embodiment
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment 1
The structural representation of the solid powder fuel nozzle that Fig. 1 provides for embodiment 1, comprises coaxially arranged centre channel 1 and circular channel 2, one end of centre channel 1 and one end of circular channel 2 in the same plane, form the head of burner; The other end of centre channel 1 exposes from circular channel 2, and this bared end is provided with 1 center channel inlet 8; Centre channel 1 and circular channel 2 are connected and fixed by expanding channels flange 10; Circular channel 2 is provided with circular channel entrance 9, and circular channel 9 is communicated with oxygen-containing gas pipeline D, circular channel sweep gas pipeline E respectively; Be provided with cooling channel 3 outside the head of circular channel 2, cooling channel 3 and centre channel 1, circular channel 2 are coaxially arranged; The both sides of cooling channel 3 are communicated with coolant entrance 6, coolant outlet 7 respectively, and coolant entrance 6, coolant outlet 7 are fixed on outside burner head by side cooling jacket 4 and front end joint flange 5.Centre channel 1 is provided with a center channel inlet 8, and this center channel inlet 8 is communicated with liquid/gas fuel channel A, powder fuel pipeline B, centre channel sweep gas pipeline C respectively.
A kind of solid powder fuel nozzle provided by the invention and using method thereof, its operating process is applicable to different gasifying process technology respectively, its run and operating process also different.
When gasifying process technology for single burner, its technological process is as follows:
Step 1: open liquid/gas fuel channel A, makes liquid/gas fuel pass into centre channel 1, and closing center's passage sweep gas pipeline C(sweep gas is rare gas element, can adopt pure nitrogen gas) and powder fuel pipeline B;
Step 2: then the oxygen-containing gas pipeline D of ingress, circular channel 9 is opened, by oxygen-containing gas, (oxygen-containing gas is the volumetric concentration of oxygen is 99.6%, other mixed gas being water vapor) pass into circular channel 2, after lighting solid powder fuel nozzle, burner is installed on vapourizing furnace, carries out baker operation;
After step 3 baker terminates, first close oxygen-containing gas pipeline D, then closing liquid/geseous fuel pipeline A passes into;
Step 4: open centre channel sweep gas channel C, replaces gasification furnace gas;
Step 5: complete in vapourizing furnace after gas displacement, is installed on vapourizing furnace after being lighted by industrial conventional ignition burner;
Step 6: when gasification in-furnace temperature maintains regulation roast technic temperature, the powder fuel channel B of solid powder fuel nozzle centre channel 1 is opened, the front end of burner spout time is arrived according to tube side length and powder fuel flow velocity estimation powder fuel, again oxygen-containing gas passage D is opened, now under the naked light of industrial conventional ignition burner is combustion-supporting, the powder fuel in solid powder fuel nozzle is lighted;
Step 7: close industrial conventional ignition burner after solid powder fuel nozzle forms stationary flame, now single fire mouth vapourizing furnace startup procedure terminates.
For single fire mouth load for 1000t/d is used for single fire mouth dry coal dust gasification furnace, a kind of solid powder fuel nozzle centre channel 1 of the present invention is set to vaporising fuel passage, adopts Sweet natural gas as baker and igniter fuel.
The Sweet natural gas flow velocity of the liquid/gas fuel inlet A ' of centre channel 1 is about 40m/s, and burner is installed on vapourizing furnace after being lighted by Sweet natural gas, is also installed and vapourizing furnace by other 3 burners simultaneously, and opens sweep gas and carry out burner protection.Along with in vapourizing furnace, temperature and pressure rises gradually, when gasification in-furnace temperature reaches about 500 DEG C, when pressure reaches 1.0MPa, oxygen-containing gas pipeline D is closed, at closedown Sweet natural gas passage 11, open shut-down purge gas while that centre channel sweep gas pipeline C and circular channel sweep gas pipeline E being about after 30s, shut-down purge gas while of after about 30s, open powder fuel pipeline B and oxygen-containing gas pipeline D successively, by igniter burner or burning torch, burner is lighted, after waiting steady combustion, extinguish igniter burner or burning torch.The powder fuel vapourizing furnace baker of the same burner of above process implementation and normal production whole process.
From above-mentioned test, the above gasification burner tip cooling system adopts 250 DEG C of saturation waters to enter cooling jacket 4 as refrigerant 30, and flow control is 7.0kg/s, obtains cooling water outlet temperature be about 251.5 DEG C through test; Burner is greater than 8000 hours work-ing life; Coal dust and vaporized chemical carry out partial oxidation reaction at vapourizing furnace, and efficiency of carbon conversion reaches more than 99%.
Gasification burner tip of the present invention has merged the function of baker and normal production burner in one, solid powder fuel gas stream bed gasification furnace igniting startup procedure is simplified greatly, reduce running cost, improve operation stability and reliability, the many raw materials achieving same burner switch, and are novel, the high-efficiency multi-function gasification burner tip of a kind of advanced person.
Embodiment 2
As shown in Figure 2, be the structural representation of the solid powder fuel nozzle that embodiment 2 provides, comprise coaxially arranged centre channel 1 and circular channel 2, one end of centre channel 1 and one end of circular channel 2 in the same plane, form the head of burner; The other end of centre channel 1 exposes from circular channel 2, and this bared end is provided with 3 center channel inlet 8; Centre channel 1 and circular channel 2 are connected and fixed by expanding channels flange 10; Circular channel 2 is provided with circular channel entrance 9, and circular channel 9 is communicated with oxygen-containing gas pipeline D, circular channel sweep gas pipeline E respectively; Be provided with cooling channel 3 outside the head of circular channel 2, cooling channel 3 and centre channel 1, circular channel 2 are coaxially arranged; The both sides of cooling channel 3 are communicated with coolant entrance 6, coolant outlet 7 respectively, and coolant entrance 6, coolant outlet 7 are fixed on outside burner head by side cooling jacket 4 and front end joint flange 5.Centre channel 1 is provided with 3 center channel inlet 8, is respectively liquid/gas fuel inlet A ', powder fuel entrance B ', centre channel sweep gas entrance C '; Liquid/gas fuel inlet A ' is communicated with liquid/gas fuel channel A, and powder fuel entrance B ' is communicated with powder fuel pipeline B, and centre channel sweep gas entrance C ' is communicated with centre channel sweep gas pipeline C.
A kind of solid powder fuel nozzle provided by the invention and using method thereof, its operating process is applicable to different gasifying process technology respectively, its run and operating process also different.
When gasifying process technology for multiple burner, operating process is as follows:
Step 1: multiple solid powder fuel nozzle is all installed on vapourizing furnace, opening except being rare gas element for each circular channel sweep gas pipeline E of other solid powder fuel nozzles except baker solid powder fuel nozzle, centre channel sweep gas pipeline C(sweep gas, can pure nitrogen gas be adopted);
Step 2: the liquid/gas fuel channel 11 opening baker solid powder fuel nozzle centre channel 1, closes its centre channel sweep gas pipeline C and powder fuel channel B; Then the oxygen-containing gas pipeline D at its circular channel entrance 9 place is opened that (oxygen-containing gas is the volumetric concentration of oxygen is 99.6%, other is the mixed gas of water vapor), be installed on vapourizing furnace after lighting this baker solid powder fuel nozzle, carried out baker operation;
Step 3: after baker terminates, other solid powder fuel nozzles are closed one by one circular channel sweep gas pipeline E, centre channel sweep gas pipeline C, open the powder fuel pipeline B of one of them solid powder fuel nozzle, the front end of burner spout time is arrived according to tube side length and powder fuel flow velocity estimation powder fuel, again oxygen-containing gas pipeline D is opened, now under the naked light of igniting solid powder fuel nozzle is combustion-supporting, powder fuel in solid powder fuel nozzle is lighted, and repeats above operation to the unlit burner of residue;
Step 4: after lighting other all solid powder fuel nozzles, close oxygen-containing gas pipeline D and the liquid/gas fuel channel A of baker solid powder fuel nozzle, open circular channel sweep gas pipeline E and centre channel sweep gas pipeline C, purge by sweep gas, open coal dust channel B and the oxygen channel D of baker solid powder fuel nozzle again, under naked light effect, this burner is also lighted by naked light in stove, now completes the pulverized coal ignition process of all burners;
For single fire mouth load for 500t/d is used for four burner dry coal dust gasification furnaces, centre channel 1 is vaporising fuel passage, adopts Sweet natural gas as baker and igniter fuel.
In centre channel 1, Sweet natural gas flow velocity is about 40m/s, and burner is installed on vapourizing furnace after being lighted by Sweet natural gas, is also installed and vapourizing furnace by other 3 burners simultaneously, and opens sweep gas and carry out burner protection.Along with in vapourizing furnace, temperature and pressure rises gradually, when gasification in-furnace temperature reaches about 500 DEG C, when pressure reaches 1.0MPa, cut off the protection gas of one of them burner, its powder fuel pipeline B is opened, oxygen-containing gas pipeline D is opened again according to the calculating waiting time, coal dust and oxygen-containing gas are lighted rapidly at the combustion-supporting lower of naked light, successively same operation is performed to the third and fourth burner subsequently, after three burners are all lighted also stable burning, first burner oxygen-containing gas pipeline D is closed, at closedown Sweet natural gas passage 11, open shut-down purge gas while that centre channel sweep gas pipeline C and circular channel sweep gas pipeline E being about after 30s, open powder fuel pipeline B and oxygen-containing gas pipeline D successively, because now existing three burners reach stable burning, 4th coal dust that burner sprays into and oxygen-containing gas will be lighted rapidly.The above process implementation powder fuel vapourizing furnace baker of same burner, igniting and normal production whole process.
From above-mentioned test, the above gasification burner tip cooling system adopts 250 DEG C of saturation waters to enter burner cooling jacket 4 as refrigerant 30, and flow control is 3.5kg/s, obtains cooling water outlet temperature be about 251.5 DEG C through test; Burner is greater than 8000 hours work-ing life; Coal dust and vaporized chemical carry out partial oxidation reaction at vapourizing furnace, and efficiency of carbon conversion reaches more than 99%.
Claims (6)
1. a using method for solid powder fuel nozzle, when gasifying process technology for single burner, it is characterized in that, operating process is as follows:
Step 1): open liquid/gas fuel channel (A), makes liquid/gas fuel pass into centre channel (1), closing center's passage sweep gas pipeline (C) and powder fuel pipeline (B);
Step 2): then the oxygen-containing gas pipeline (D) at circular channel entrance (9) place is opened, oxygen-containing gas is passed into circular channel (2), after lighting solid powder fuel nozzle, burner is installed on vapourizing furnace, carry out baker operation;
After step 3) baker terminates, first close oxygen-containing gas pipeline (D), then closing liquid/geseous fuel pipeline (A) passes into;
Step 4): open centre channel sweep gas pipeline (C), replaces gasification furnace gas;
Step 5): complete in vapourizing furnace after gas displacement, is installed on vapourizing furnace after being lighted by industrial conventional ignition burner;
Step 6): when gasification in-furnace temperature maintains regulation roast technic temperature, the powder fuel pipeline (B) of solid powder fuel nozzle centre channel (1) is opened, the front end of burner spout time is arrived according to tube side length and powder fuel flow velocity estimation powder fuel, again oxygen-containing gas pipeline (D) is opened, now under the naked light of industrial conventional ignition burner is combustion-supporting, the powder fuel in solid powder fuel nozzle is lighted;
Step 7): close industrial conventional ignition burner after solid powder fuel nozzle forms stationary flame, now single fire mouth vapourizing furnace startup procedure terminates;
Described solid powder fuel nozzle comprises coaxially arranged centre channel (1) and circular channel (2), one end of centre channel (1) and the one end of circular channel (2) in the same plane, form the head of burner; The other end of centre channel (1) exposes from circular channel (2), and this bared end is provided with 1 ~ 3 center channel inlet (8); Centre channel (1) and circular channel (2) are connected and fixed by expanding channels flange (10); Circular channel (2) is provided with circular channel entrance (9), and circular channel entrance (9) is communicated with oxygen-containing gas pipeline (D), circular channel sweep gas pipeline (E) respectively; Be provided with cooling channel (3) outside circular channel (2) head, cooling channel (3) and centre channel (1), circular channel (2) are coaxially arranged; The both sides of cooling channel (3) are communicated with coolant entrance (6), coolant outlet (7) respectively, and coolant entrance (6), coolant outlet (7) are fixed on outside burner head by side cooling jacket (4) and front end joint flange (5);
Wherein, described centre channel (1) is provided with a center channel inlet (8), and this center channel inlet (8) is communicated with liquid/gas fuel channel (A), powder fuel pipeline (B), centre channel sweep gas pipeline (C) respectively;
Or described centre channel (1) is provided with 3 center channel inlet (8), be respectively liquid/gas fuel inlet (A '), powder fuel entrance (B '), centre channel sweep gas entrance (C '); Liquid/gas fuel inlet (A ') be communicated with liquid/gas fuel channel (A), powder fuel entrance (B ') be communicated with powder fuel pipeline (B), centre channel sweep gas entrance (C ') be communicated with centre channel sweep gas pipeline (C).
2. the using method of a kind of solid powder fuel nozzle as claimed in claim 1, it is characterized in that, in described oxygen-containing gas, the volumetric concentration of oxygen is more than or equal to 21%.
3. the using method of a kind of solid powder fuel nozzle as claimed in claim 1, is characterized in that, described sweep gas is rare gas element, and described rare gas element is argon gas, nitrogen or helium.
4. a using method for solid powder fuel nozzle, when gasifying process technology for multiple burner, it is characterized in that, operating process is as follows:
Step 1): be all installed on vapourizing furnace by multiple solid powder fuel nozzle, opens except for each circular channel sweep gas pipeline (E) of other solid powder fuel nozzles except baker solid powder fuel nozzle, centre channel sweep gas pipeline (C);
Step 2): the liquid/gas fuel channel (11) opening baker solid powder fuel nozzle centre channel (1), close its centre channel sweep gas pipeline (C) and powder fuel pipeline (B); Then the oxygen-containing gas pipeline (D) at its circular channel entrance (9) place is opened, be installed on vapourizing furnace after lighting this baker solid powder fuel nozzle, carry out baker operation;
Step 3): after baker terminates, other solid powder fuel nozzles are closed one by one circular channel sweep gas pipeline (E), centre channel sweep gas pipeline (C), open the powder fuel pipeline (B) of one of them solid powder fuel nozzle, the front end of burner spout time is arrived according to tube side length and powder fuel flow velocity estimation powder fuel, again oxygen-containing gas pipeline (D) is opened, now under the naked light of igniting solid powder fuel nozzle is combustion-supporting, powder fuel in solid powder fuel nozzle is lighted, and repeats above operation to the unlit burner of residue;
Step 4): after lighting other all solid powder fuel nozzles, close oxygen-containing gas pipeline (D) and the liquid/gas fuel channel (A) of baker solid powder fuel nozzle, open circular channel sweep gas pipeline (E) and centre channel sweep gas pipeline (C), purge by sweep gas;
Step 5): open oxygen-containing gas pipeline (D) and powder fuel pipeline (B) after purging again, now this solid powder fuel nozzle sprays into logistics other solid powder fuel nozzle naked lights are combustion-supporting and to be lighted rapidly down, now completes the ignition process of all burners;
Described solid powder fuel nozzle comprises coaxially arranged centre channel (1) and circular channel (2), one end of centre channel (1) and the one end of circular channel (2) in the same plane, form the head of burner; The other end of centre channel (1) exposes from circular channel (2), and this bared end is provided with 1 ~ 3 center channel inlet (8); Centre channel (1) and circular channel (2) are connected and fixed by expanding channels flange (10); Circular channel (2) is provided with circular channel entrance (9), and circular channel entrance (9) is communicated with oxygen-containing gas pipeline (D), circular channel sweep gas pipeline (E) respectively; Be provided with cooling channel (3) outside circular channel (2) head, cooling channel (3) and centre channel (1), circular channel (2) are coaxially arranged; The both sides of cooling channel (3) are communicated with coolant entrance (6), coolant outlet (7) respectively, and coolant entrance (6), coolant outlet (7) are fixed on outside burner head by side cooling jacket (4) and front end joint flange (5);
Wherein, described centre channel (1) is provided with a center channel inlet (8), and this center channel inlet (8) is communicated with liquid/gas fuel channel (A), powder fuel pipeline (B), centre channel sweep gas pipeline (C) respectively;
Or described centre channel (1) is provided with 3 center channel inlet (8), be respectively liquid/gas fuel inlet (A '), powder fuel entrance (B '), centre channel sweep gas entrance (C '); Liquid/gas fuel inlet (A ') be communicated with liquid/gas fuel channel (A), powder fuel entrance (B ') be communicated with powder fuel pipeline (B), centre channel sweep gas entrance (C ') be communicated with centre channel sweep gas pipeline (C).
5. the using method of a kind of solid powder fuel nozzle as claimed in claim 4, it is characterized in that, in described oxygen-containing gas, the volumetric concentration of oxygen is more than or equal to 21%.
6. the using method of a kind of solid powder fuel nozzle as claimed in claim 4, is characterized in that, described sweep gas is rare gas element, and described rare gas element is argon gas, nitrogen or helium.
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| CN104987889B (en) * | 2015-07-07 | 2017-08-15 | 杭州全合科技有限公司 | A kind of two-period form entrained flow gasification method |
| CN106765096B (en) * | 2016-12-30 | 2024-01-02 | 上海泽玛克敏达机械设备有限公司 | Gasification furnace guiding burner |
| CN107033972A (en) * | 2017-05-09 | 2017-08-11 | 哈尔滨工业大学 | A kind of dry coal powder airflow bed gasification furnace burner with purging gas shielded |
| CN111349471B (en) * | 2018-12-24 | 2021-02-26 | 国家能源投资集团有限责任公司 | Burner and gasification furnace with same |
| CN113154393B (en) * | 2021-04-07 | 2023-06-16 | 北京航化节能环保技术有限公司 | Integrated gun for startup burner, use method and industrial furnace |
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| CN102767827A (en) * | 2012-07-27 | 2012-11-07 | 上海锅炉厂有限公司 | Combined-type thermal-oxidation igniting process nozzle for gasifying solid powder fuel |
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