CN105987378A - Method and device for fuel pyrolysis and co-combustion for preventing and controlling soot formation and coking of low-rank coal - Google Patents
Method and device for fuel pyrolysis and co-combustion for preventing and controlling soot formation and coking of low-rank coal Download PDFInfo
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Abstract
The invention relates to a method for fuel pyrolysis and co-combustion for preventing and controlling soot formation and coking of low-rank coal. The method includes the following steps that the low-rank coal is pyrolyzed to generate pyrolysis semicoke and pyrolysis gas; and the pyrolysis semicoke and raw coal are ground to form pyrolysis semicoke powder and raw coal powder, and the pyrolysis semicoke powder and the raw coal powder are co-combusted. In addition, the invention provides a device for fuel pyrolysis and co-combustion for preventing and controlling soot formation and coking of the low-rank coal.
Description
Technical field
The invention belongs to coal utilizes field, particularly relates to the fuel thermal decomposition of a kind of prevention and control low-order coal dust deposition and the method for multifuel combustion and device.
Background technology
The alkali metal content of low-order coal is the highest, and major part all exists with water-soluble state or organic form.Its sodium content is (with Na2O counts) more than 5%, even as high as other coal less than 1.5% of 7%(having).And due to the effect such as alkali-metal evaporation coalescence in combustion process, will produce substantial amounts of superfine particulate matter, thus cause boiler contamination and slagging scorification, and the dust stratification initial stage that the thermophoretic forces of superfine particulate matter is deposited on heat exchanger surface plays mastery reaction.Therefore, the power plant of burning low-order coal needs continual soot blowing just can prevent heat exchanger dust deposition, and this is the most unfavorable for the operation of power plant, brings a lot of potential safety hazard and economic damage to power plant.In order to avoid this phenomenon, power plant can only burn less or not burn low-order coal, and this is again a kind of waste for the low-order coal resource that reserves are huge.It is thus desirable to find a kind of practical, convenient and safe technology using low-order coal.
Low-order coal and other coal difference on alkali and alkaline earth metal ions mainly have Ca, the content of tri-kinds of elements of Na, Mg and occurrence patterns, and these three element is the principal element affecting its dust deposition.Although the burning process currently for main alkali metal sodium is a lot, but it is primarily directed to the method removed or control local temperature of sodium, and the method for the mellow lime transition mechanisms of combustion process does not exist.
At present mainly there are high-temperature wash solution removing sodium, pyrolysis absorption sodium, the solid sodium of mineral, transformation boiler structure etc. for improving the technology of low-order coal dust deposition.If publication date is on 02 23rd, 2012, in the Chinese patent application of Publication No. CN102533383A, in this patent application, the blood circulation of boiler utilizes Power Plant Heat Source to heat water, and carries out purifying removing sodium to raw coal by water circulation so that it is becomes fat coal and burns；As publication date is JIUYUE in 2014 24, in the Chinese patent application of Publication No. CN104061570A, its method is to utilize heat smoke to be pyrolyzed, and all enters hearth combustion with the sodium in sorbent pyrolysis gas, pyrolysis gas and pyrolysis char；As publication date is December in 2013 04, in the Chinese patent application of Publication No. CN103421575A, its method be a certain amount of polymeric aluminium-silica saline solution containing aluminum and silicon components of sprinkling uniform to low-order coal to generate the most volatile sodium-containing material of high temperature, thus reach the effect of solid sodium；If publication date is on 03 20th, 2013, in the Chinese patent application of Publication No. CN202813354U, disclose a kind of device utilizing flue gas recirculation to reduce low-order coal contamination activity, utilize the dust deposition of the backflow prevention low-order coal of cold flue gas.
High-temperature wash solution (or water) removing sodium uses adds some technology such as solution coal washing and high temperature high pressure process, and from device structure, technological process is complicated, and relatively costly.The technical characterstic of pyrolysis absorption sodium is to use smoke gas pyrolysis coal, sodium in venting one's spleen by adsorbing material heat of adsorption again, equipment is relatively easy, but, the behavior in pyrolysis of the sodium in coal is extremely complex, sodium discharges in vapour form from coal, needs higher temperature, and the cost of operating cost and adsorbent is the highest.Gu the feature of sodium technology is that in coal adding the mineral such as sial makes sodium be converted into the salt of indissoluble, in principle similar with other high-order coal mixed combusting technologies, reduce the generation of fine particle by inorganic mineral interphase interaction in ash, but the mineral needed for this method is relatively costly.And form low-temperature burning region by the structure of modification of boiler, its core is also the generation reducing fine particle, and it is reduced to below ash fusion point at flue gas temperature of hearth outlet, but the method needs to consider many factors, such as low-load combustion-stabilizing, burn-off rate etc., fundamentally do not improve the ash formation of low-order coal.
Summary of the invention
In view of this, necessary provide a kind of technological process simple, with low cost, it is not necessary to add chemical reagent and can the method for effectively prevention and control low-order coal dust deposition and device.
The fuel thermal decomposition of a kind of prevention and control low-order coal dust deposition and the method for multifuel combustion, it comprises the following steps: is pyrolyzed low-order coal and generates pyrolysis char and pyrolysis gas；Grind pyrolysis char and raw coal forms pyrolysis char powder and raw coal powder, pyrolysis char powder and raw coal powder described in mixed combustion.
The fuel thermal decomposition of a kind of prevention and control low-order coal dust deposition and the device of multifuel combustion, comprising: boiler, low-order coal pretreatment system and pulverized coal preparation system, described boiler includes burner hearth, the upper strata burner being arranged on burner hearth side wall and lower floor's burner, horizontal flue, vertical well gas flue and is arranged on the air preheater of described vertical well gas flue；Described low-order coal pretreatment system includes multiple high-temperature flue gas outlet, the pyrolysis oven being connected with the plurality of high-temperature flue gas outlet, is arranged on the cooler below this pyrolysis oven, and the plurality of high-temperature flue gas outlet is positioned at the side wall of described horizontal flue；Described pulverized coal preparation system includes that semicoke coal pulverizer, raw coal coal pulverizer, described semicoke coal pulverizer are connected with described upper strata burner, and described raw coal coal pulverizer is connected with described lower floor burner.
Compared with prior art, the fuel thermal decomposition of prevention and control low-order coal dust deposition that the present invention provides and the method for multifuel combustion and device, first, alkali and alkaline earth metal ions occurrence patterns in semicoke is changed by pyrolysis, thus change mineral Transport in combustion, and controlled by the multifuel combustion with raw coal powder, promote the coalescence process of burner hearth endoparticle thing and predecessor thereof, thus reduce fine particle generation amount in boiler, it is suppressed that the initial stage dust stratification of heating surface；Secondly, by the control of pyrolytical condition, change the structure of pyrolysis char, especially coke, promote submicron interior in mineral collision coalescence in coke surface in coke combustion, thus reduce the generation of fine particle, suppress the initial stage dust stratification of heating surface further；3rd, optimize technological process, make technological process simple, with low cost, it is not necessary to add chemical reagent, it is not necessary to other purifiers, and be easily controlled, it is easy to accomplish.4th, on the basis of the dust deposition of effectively suppression low-order coal, pyrolysis gas can play the effect fired again.Finally, by setting up fuel thermal decomposition and the device of multifuel combustion of advanced prevention and control low-order coal dust deposition, low-order coal can be used in coal fired power plant.
Accompanying drawing explanation
Fig. 1 is fuel thermal decomposition and the method flow diagram of multifuel combustion of the prevention and control low-order coal dust deposition that first embodiment of the invention provides.
Fig. 2 is the plane graph of the device of the fuel thermal decomposition of prevention and control low-order coal dust deposition that provides of first embodiment of the invention and multifuel combustion.
Fig. 3 is fuel thermal decomposition and the method flow diagram of multifuel combustion of the prevention and control low-order coal dust deposition that second embodiment of the invention provides.
Fig. 4 is the plane graph of the device of the fuel thermal decomposition of prevention and control low-order coal dust deposition that provides of second embodiment of the invention and multifuel combustion.
Main element symbol description
| Boiler | 10 |
| Burner hearth | 11 |
| Horizontal flue | 12 |
| Vertical well gas flue | 13 |
| Air preheater | 14 |
| Low-order coal | 15 |
| High-temperature flue gas | 16 |
| Upper strata burner | 17 |
| Lower floor's burner | 18 |
| Low-order coal pretreatment system | 20 |
| High-temperature flue gas outlet | 21 |
| Pyrolysis oven | 22 |
| Cooler | 23 |
| Pulverized coal preparation system | 30 |
| Raw coal coal pulverizer | 31 |
| Semicoke coal pulverizer | 32 |
| Raw coal | 33 |
| The fuel thermal decomposition of prevention and control low-order coal dust deposition and the device of multifuel combustion | 100 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the specific embodiments, the fuel thermal decomposition of prevention and control low-order coal dust deposition provided the present invention and the method for multifuel combustion and device are described in further detail.
First embodiment of the invention provides a kind of fuel thermal decomposition and the method for multifuel combustion of prevention and control low-order coal dust deposition.Referring to Fig. 1, the fuel thermal decomposition of this prevention and control low-order coal dust deposition and the method for multifuel combustion comprise the following steps: (1) pyrolysis low-order coal generates pyrolysis char and pyrolysis gas；(2) grind pyrolysis char and raw coal respectively and form pyrolysis char powder and raw coal powder, then use the mode of stratified combustion to burn described pyrolysis char powder and raw coal powder.
In step (1), it is provided that the fuel thermal decomposition of prevention and control low-order coal dust deposition and the device 100 of multifuel combustion.Refer to Fig. 2, the fuel thermal decomposition of prevention and control low-order coal dust deposition and the device 100 of multifuel combustion and include boiler 10, low-order coal pretreatment system 20 and pulverized coal preparation system 30.
Described boiler 10 includes burner hearth 11, horizontal flue 12, vertical well gas flue 13, is arranged on the air preheater 14 of described vertical well gas flue 13 and is arranged on upper strata burner 17 and lower floor's burner 18 of burner hearth side wall.
Described low-order coal pretreatment system 20 includes multiple high-temperature flue gas outlet 21, the pyrolysis oven 22 being connected with the plurality of high-temperature flue gas outlet 21, is arranged on the cooler 23 below this pyrolysis oven 22.In the present embodiment, the quantity of described high-temperature flue gas outlet 21 is 2, is positioned at the side wall of described horizontal flue 12.
Described pulverized coal preparation system 30 includes raw coal coal pulverizer 31, raw coal coal bunker (not shown), raw coal coal bunker (not shown), semicoke coal pulverizer 32, pyrolysis char warehouse (not shown), semicoke coal bunker (not shown).Described raw coal warehouse is connected with described raw coal coal pulverizer 31 with raw coal coal bunker, provides material can to raw coal coal pulverizer 31.Described pyrolysis char warehouse is connected with described semicoke coal pulverizer 32 with semicoke coal bunker, provides material can to semicoke coal pulverizer 32.Described semicoke coal pulverizer 32 is connected with described upper strata burner 17 by pulverized coal feed pipe；Described raw coal coal pulverizer 31 is connected with described lower floor burner 18 by pulverized coal feed pipe.
Described high-temperature flue gas outlet 21 is connected with the bottom of described pyrolysis oven 22 by pipeline, described pyrolysis oven 22 is connected with described upper strata burner 17 by pipeline, described cooler 23 is connected with described pyrolysis oven 22, is provided with transmission belt (not shown) between the pyrolysis char warehouse in described cooler 23 and described pulverized coal preparation system.
Low-order coal 15 is sent into from the top of described pyrolysis oven 22, high-temperature flue gas needed for pyrolysis is sent into from the bottom of pyrolysis oven 22, reverse-flow reacting by heating process is defined with described low-order coal 15, i.e., described high-temperature flue gas heats described low-order coal 15 during up makes low order coal 15 be pyrolyzed under the conditions of oxygen debt, generates pyrolysis char and pyrolysis gas.From high temperature flue-gas from boiler outlet 21, draw the high-temperature flue gas 16 that temperature is at 700-900 DEG C, and regulated the temperature of high-temperature flue gas 16 by the exhaust gas volumn changing air preheater outlet.Owing under different temperatures, pyrolysis char has different coke characteristics, and the different occurrence patterns of alkali and alkaline earth metal ions, therefore, pyrolysis temperature is adjusted between optimum range 600-800 DEG C, pyrolysis time is about 30-60 minute, uses moving bed pyrolysis reactor.
Pyrolysis gas is the product that the fugitive constituent in low-order coal 15 occurs cracking under oxygen debt heating, under above-mentioned pyrolysis temperature, alkali and alkaline earth metal ions element is difficult to volatilize with gaseous material, so containing very small amount alkali and alkaline earth metal ions element in pyrolysis gas, thus can be as reburning fuel and flue gas recycled.Although pyrolysis gas contains combustible component and the high-temperature flue gas as thermal source in the present embodiment, but still be a kind of effective fuel, this pyrolysis gas both can be directly entered in burner hearth 11 burning by described upper strata burner 17, can can also realize low nitrogen burning and the purpose of prevention and control dust deposition as flue gas recycled simultaneously.
Described pyrolysis char enters in described cooler 23 and is cooled to room temperature, and this cooler 23 uses water-cooled, and the pyrolysis char of cooler outlet can be delivered to pyrolysis char warehouse by transmission belt.
In step (2), grind pyrolysis char and raw coal respectively and form pyrolysis char powder and raw coal powder, then use the mode of stratified combustion to burn described pyrolysis char powder and raw coal powder.Described pyrolysis char through supercooling laggard enter pyrolysis char warehouse, enter back into semicoke coal bunker, subsequently into semicoke coal pulverizer 32, formation pyrolysis char powder is ground through this semicoke coal pulverizer 32, raw coal 33 is passed through raw coal coal pulverizer 31 to carry out grinding formation raw coal powder, the most described pyrolysis char powder sprays into described burner hearth 11 from upper strata burner 17, and described raw coal powder sprays into described burner hearth 11 from lower floor's burner 18, and this pyrolysis char powder and raw coal powder burn in described burner hearth 11.
In multifuel combustion mode, multifuel combustion ratio is control parameter important in running, and it is that 20-40% is preferable that pyrolysis char accounts for the ratio of described pyrolysis char and raw coal 33.In the present embodiment, the ratio of described pyrolysis char is 30%.
Second embodiment of the invention provides a kind of fuel thermal decomposition and the method for multifuel combustion of prevention and control low-order coal dust deposition.Referring to Fig. 3, the fuel thermal decomposition of this prevention and control low-order coal dust deposition and the method for multifuel combustion comprise the following steps: (1) pyrolysis low-order coal generates pyrolysis char and pyrolysis gas；(2) mixture grinding pyrolysis char and raw coal forms pyrolysis char powder and the mixture of raw coal powder, grinds another part raw coal and forms raw coal powder, then uses the mode of stratified combustion to burn described pyrolysis char powder and the mixture of raw coal powder and raw coal powder.
In second embodiment, the fuel thermal decomposition of prevention and control low-order coal dust deposition and the method for multifuel combustion are essentially identical with the fuel thermal decomposition of prevention and control low-order coal dust deposition in first embodiment and the method for multifuel combustion, main difference is that step (2).See also Fig. 4, in the present embodiment, after the cooling of described pyrolysis char, enter semicoke coal pulverizer 32 through pyrolysis char warehouse and semicoke coal bunker.Then raw coal 33 is inputted described semicoke coal pulverizer 32 and is mixed to form mixture with described pyrolysis char.Then grind this mixture and form pyrolysis char powder and the mixture of raw coal powder, afterwards the mixture of described pyrolysis char powder and raw coal powder is sprayed into described burner hearth 11 from upper strata burner 17, simultaneously, another part raw coal 33 enters raw coal coal pulverizer 31 and grinds, then spray into described burner hearth 11 from lower floor's burner 18, use the mode of stratified combustion to burn described pyrolysis char powder and the mixture of raw coal powder and raw coal powder.Wherein, pyrolysis char accounts for the ratio of described pyrolysis char and raw coal 33 is 30%.
Different multifuel combustion modes is selected so that its combination property reaches best according to different low-order coal 15.Described pyrolysis char burning position in burner hearth, by affect particulate matter generation and and former coal dust firing produced by collide coalescence between particulate matter, thus affect the dust stratification process in boiler, thus, rational multifuel combustion mode can effectively prevent dust deposition from being the key in the implementation process of the present invention.
After described low-order coal 15 is pyrolyzed at a certain temperature, the alkali and alkaline earth metal ions element such as sodium, calcium can migrate to acid solvent and non-solvent, now alkali and alkaline earth metal ions Transport in combustion changes, it is prone to be adsorbed or collide coalescence by aluminosilicate and generates bigger granule, thus the produced fine particle of pyrolysis char burning significantly reduces；The bulky grain thing that fine grained, bulky grain ash and the gaseous contaminant that former coal dust firing produces can produce with pyrolysis char burning collides coalescence near burner; thus change the particle size distribution profiles of particulate matter further; the generation of fine particle significantly reduces, thus reaches suppression initial stage dust stratification；According to dust stratification initial stage internal layer formation mechenism, fine particle is the main cause causing fouling of heating surface coking, therefore controls the dust deposition process that the generation of fine particle can control on heating surface.The pyrolysis gas that the present embodiment produces can be as reburning fuel, form the fractional combustion of fuel, simultaneously because the effect of high-temperature flue gas 16 circulation, the oxygen concentration of described burner hearth 11 combustion zone reduces, and causes combustion zone part anoxia, forms fractional combustion, such that it is able to the thermo parameters method in control boiler, reduce temperature and the thermograde of heating surface regional temperature boundary region of overall flue gas, reduce the melted probability of ash, and then reach the purpose of prevention and control dust deposition.
First the fuel thermal decomposition of the prevention and control low-order coal dust deposition that the embodiment of the present invention provides and the method for multifuel combustion and device have the advantage that, alkali and alkaline earth metal ions occurrence patterns in semicoke is changed by pyrolysis, thus change mineral Transport in combustion, and controlled by the multifuel combustion with raw coal powder, promote the coalescence process of stove endoparticle thing and predecessor thereof, thus reduce fine particle generation amount in stove, it is suppressed that the initial stage dust stratification of heating surface；Secondly, by the control of pyrolytical condition, change the structure of pyrolysis char, especially coke, promote submicron interior in mineral collision coalescence in coke surface in coke combustion, thus reduce the generation of fine particle, suppress the initial stage dust stratification of heating surface further；3rd, optimize technological process, make technological process simple, with low cost, it is not necessary to add chemical reagent, it is not necessary to other purifiers, and be easily controlled, it is easy to accomplish.4th, on the basis of the dust deposition of effectively suppression low-order coal, pyrolysis gas can play the effect fired again.Finally, by setting up fuel thermal decomposition and the device of multifuel combustion of advanced prevention and control low-order coal dust deposition, low-order coal can be used in coal fired power plant.
It addition, those skilled in the art can also do other change, these changes done according to the present invention in spirit of the present invention, all should be included in scope of the present invention.
Claims (10)
1. the fuel thermal decomposition of prevention and control low-order coal dust deposition and a method for multifuel combustion, it comprises the following steps:
Pyrolysis low-order coal generates pyrolysis char and pyrolysis gas；
Grind pyrolysis char and raw coal forms pyrolysis char powder and raw coal powder, pyrolysis char powder and raw coal powder described in mixed combustion.
2. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 1 and the method for multifuel combustion, it is characterized in that, in the step that described pyrolysis low-order coal generates pyrolysis char and pyrolysis gas, the alkali and alkaline earth metal ions in described low-order coal is made to be changed into acid solvent and the alkali and alkaline earth metal ions of non-solvent, pyrolysis temperature controls between 600-800 DEG C, and pyrolysis time controlled at 30-60 minute.
3. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 1 and the method for multifuel combustion, it is characterised in that in the step that described pyrolysis low-order coal generates pyrolysis char and pyrolysis gas, is passed through high-temperature flue gas and heats described low-order coal and make low order pyrolysis of coal.
4. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 3 and the method for multifuel combustion, it is characterized in that, fuel thermal decomposition and the device of multifuel combustion of one prevention and control low-order coal dust deposition are provided, it includes boiler, low-order coal pretreatment system and pulverized coal preparation system, described low-order coal pretreatment system includes high-temperature flue gas outlet, the pyrolysis oven being connected with this high-temperature flue gas outlet, it is arranged on the cooler below this pyrolysis oven, high-temperature flue gas is drawn from described high-temperature flue gas outlet and sprays into bottom described pyrolysis oven, described low-order coal enters from described pyrolysis oven top, described high-temperature flue gas heats described low-order coal during up makes low order coal be pyrolyzed under the conditions of oxygen debt, generate pyrolysis char and pyrolysis gas.
5. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 1 and the method for multifuel combustion, it is characterised in that it is 20%-40% that described pyrolysis char accounts for the ratio of described pyrolysis char and raw coal.
6. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 4 and the method for multifuel combustion, it is characterised in that described boiler includes burner hearth, upper strata burner and lower floor's burner；Described pulverized coal preparation system includes semicoke coal pulverizer, raw coal coal pulverizer, this upper strata burner described and lower floor's burner are separately positioned on the side wall of described burner hearth, described semicoke coal pulverizer is connected with described upper strata burner, and described raw coal coal pulverizer is connected with described lower floor burner.
7. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 6 and the method for multifuel combustion, it is characterized in that, described pyrolysis char and the raw coal of grinding forms pyrolysis char powder and raw coal powder, in the step of pyrolysis char powder and raw coal powder described in mixed combustion, described pyrolysis char through supercooling laggard enter described semicoke coal pulverizer grind formation pyrolysis char powder, raw coal is passed through described raw coal coal pulverizer to carry out grinding formation raw coal powder, the most described pyrolysis char powder sprays into described burner hearth from upper strata burner, described raw coal powder sprays into described burner hearth from lower floor's burner, this pyrolysis char powder and raw coal powder burn in described burner hearth.
8. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 6 and the method for multifuel combustion, it is characterized in that, described pyrolysis char and the raw coal of grinding forms pyrolysis char powder and raw coal powder, in the step of pyrolysis char powder and raw coal powder described in mixed combustion, described pyrolysis char through supercooling laggard enter semicoke coal pulverizer, raw coal is inputted described semicoke coal pulverizer and is mixed to form mixture with described pyrolysis char, then grind this mixture and form pyrolysis char powder and the mixture of raw coal powder, another part raw coal inputs described raw coal coal pulverizer and is milled into raw coal powder, afterwards the mixture of described pyrolysis char powder and raw coal powder is sprayed into described burner hearth from upper strata burner, described raw coal powder sprays into described burner hearth from lower floor's burner, this pyrolysis char powder and the mixture of raw coal powder and raw coal powder burn in described burner hearth.
9. the fuel thermal decomposition of prevention and control low-order coal dust deposition as claimed in claim 6 and the method for multifuel combustion, it is characterized in that, described pyrolysis gas enters described burner hearth by described upper strata burner, and this pyrolysis gas forms the fractional combustion of fuel, Temperature Distribution in regulation burner hearth as reburning fuel.
10. the fuel thermal decomposition of prevention and control low-order coal dust deposition and a device for multifuel combustion, comprising:
One boiler, this boiler includes burner hearth, the upper strata burner being arranged on burner hearth side wall and lower floor's burner, horizontal flue, vertical well gas flue and is arranged on the air preheater of described vertical well gas flue；
One low-order coal pretreatment system, low order Coal pretreatment system includes multiple high-temperature flue gas outlet, the pyrolysis oven being connected with the plurality of high-temperature flue gas outlet, is arranged on the cooler below this pyrolysis oven, and the plurality of high-temperature flue gas outlet is positioned at the side wall of described horizontal flue；
One pulverized coal preparation system, this pulverized coal preparation system includes that semicoke coal pulverizer, raw coal coal pulverizer, described semicoke coal pulverizer are connected with described upper strata burner, and described raw coal coal pulverizer is connected with described lower floor burner.
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| CN107238075A (en) * | 2017-07-14 | 2017-10-10 | 华中科技大学 | A kind of coal burning boiler of power station mixed coal combustion method |
| CN108151051A (en) * | 2017-11-18 | 2018-06-12 | 西安交通大学 | A kind of large scale mixes the coal-fired power station boiler system and co-combustion method for burning semicoke |
| CN108151008A (en) * | 2017-11-18 | 2018-06-12 | 西安交通大学 | A kind of power boiler low NOx of high-temperature flue gas preheating semicoke mixes combustion system and method |
| CN109751592A (en) * | 2018-12-20 | 2019-05-14 | 西安交通大学 | A kind of industrial coal layer burner mixes the System and method for of burning semicoke |
| CN110220211A (en) * | 2019-07-03 | 2019-09-10 | 国电南京电力试验研究有限公司 | A kind of device and method coupling Collaborative Control coal-burning boiler load with gas using coal |
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| CN108151008A (en) * | 2017-11-18 | 2018-06-12 | 西安交通大学 | A kind of power boiler low NOx of high-temperature flue gas preheating semicoke mixes combustion system and method |
| CN108151008B (en) * | 2017-11-18 | 2019-03-12 | 西安交通大学 | A kind of mixed combustion system and method for power boiler low NOx of high-temperature flue gas preheating semicoke |
| CN108151051B (en) * | 2017-11-18 | 2019-06-04 | 西安交通大学 | A kind of large scale mixes the coal-fired power station boiler system and co-combustion method of burning semicoke |
| CN109751592A (en) * | 2018-12-20 | 2019-05-14 | 西安交通大学 | A kind of industrial coal layer burner mixes the System and method for of burning semicoke |
| CN109751592B (en) * | 2018-12-20 | 2020-01-10 | 西安交通大学 | System and method for blending and burning semicoke in industrial coal-bed combustion furnace |
| CN110220211A (en) * | 2019-07-03 | 2019-09-10 | 国电南京电力试验研究有限公司 | A kind of device and method coupling Collaborative Control coal-burning boiler load with gas using coal |
| CN110220211B (en) * | 2019-07-03 | 2024-04-02 | 国能南京电力试验研究有限公司 | Device and method for cooperatively controlling load of coal-fired boiler by utilizing coupling of coal and gas |
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