CN104344398A - Middle storage type hot wind powder feeding and pulverizing system - Google Patents
Middle storage type hot wind powder feeding and pulverizing system Download PDFInfo
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- CN104344398A CN104344398A CN201310329965.0A CN201310329965A CN104344398A CN 104344398 A CN104344398 A CN 104344398A CN 201310329965 A CN201310329965 A CN 201310329965A CN 104344398 A CN104344398 A CN 104344398A
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Abstract
The invention discloses a middle storage type hot wind powder feeding and pulverizing system. A tertiary air outlet is connected with an exhaust treatment device; the exhaust treatment device comprises an efficient separator and an air-powder mixer arranged in parallel; an over fire air nozzle is formed in a boiler; the tertiary air outlet is synchronously connected with the efficient separator and the air-powder mixer; an air outlet of the efficient separator is connected with the over fire air nozzle; a coal powder outlet of the efficient separator is connected with a coal powder inlet of the air-powder mixer; and an air-powder mixing outlet of the air-powder mixer is connected with a tertiary air nozzle. The concentration of coal powder of tertiary air fed in a hearth of the boiler is higher, so that the interference to a main combustion area is reduced. Moreover, the over fire air nozzle is formed above the tertiary air, so that the unburnt coal powder is further burnt here to reduce the combustible matter content of fly ash. The system forms the air depth classification in the hearth of the boiler, reduces the discharge of NOx in an outlet of the hearth, and decreases the operation cost of such circulation reduction systems as SCR.
Description
Technical field
The present invention relates to boiler technology field, particularly a kind of middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system.
Background technology
Please refer to Fig. 1, Fig. 1 is a kind of schematic diagram of typical middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system.
This system mainly comprises feeder 11, coal pulverizer 12, wood block separator 13, mill separator 14, pulverized-coal collector 15, Pulverized Coal Bin 16, burner 102, boiler 10, and primary air fan 1b, pressure fan 1a.
Operation principle is roughly as follows:
Feeder 11 carries raw coal to coal pulverizer 12, coal pulverizer 12 makes coal dust, after wood block separator 13, mill separator 14, pulverized-coal collector 15, the coal dust of about about 85% is separated and falls into Pulverized Coal Bin 16, and the coal dust in Pulverized Coal Bin 16 can be transported to boiler 10 combustion by the First air that primary air fan 1b carries.The powder process amount of usual coal pulverizer 12 does not need consistent with boiler 10 fuel quantity, has certain independence, when boiler 10 load variations, regulates by machine supplying powder 17.
Pressure fan 1a feeding secondary wind, mixes in boiler 10 with First air, for the burning of coal dust provides oxygen, and can add the disturbance of air blast, promotes the backflow of high-temperature flue gas, and promotion combustible mixes with oxygen, for burning provides condition completely.
In addition, after most of coal dust is separated, be called weary gas through pulverized-coal collector 15 gas out, also have the coal dust of about about 10% in weary gas, use as tertiary air.Weary gas is after Powder discharging fan, tertiary air case, and directly enter the tertiary air spout 101 be arranged on boiler 10, tertiary air spout 101 is arranged at the top of the main combustion zone of boiler 10, then tertiary air burns above the main combustion zone of boiler 10.
But still there is following technical problem in such scheme:
Tertiary air coal powder density is low, and the burning for main combustion zone has certain interference, makes main combustion zone oxygen concentration higher, thus causes that furnace outlet NOx (nitrogen oxide) discharge capacity is high, SCR (restoring system) operating cost is higher.In addition, tertiary air also causes boiler 10 efficiency of combustion on the low side, and fly ash combustible material is higher, cannot adapt to the environment protectment protection of increasingly stringent.
In view of this, how to improve powder feeding pulverized coal preparation system, to reduce the interference of tertiary air to main combustion zone, reducing NOx discharge, reduce fly ash combustible material, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
For solving the problems of the technologies described above, object of the present invention is for providing a kind of middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system, and this system can reduce the interference of tertiary air to main combustion zone, reduces NOx discharge, and reduces fly ash combustible material.
Middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system provided by the invention, comprise boiler and tertiary air outlet, described boiler is provided with tertiary air spout, and described tertiary air outlet connects weary Flash Gas Compression Skid System; Described weary Flash Gas Compression Skid System comprises the efficient cyclone and air and powder mixer that are arranged in parallel; Described boiler is provided with fire air nozzle, and described tertiary air outlet connects described efficient cyclone and described air and powder mixer simultaneously; The air outlet of described efficient cyclone connects described fire air nozzle, and its discharge connects the coal dust import of described air and powder mixer, and the wind powder mixed export of described air and powder mixer connects described tertiary air spout.
The course of work of this powder feeding pulverized coal preparation system is: tertiary air is divided into two-way, and a road enters efficient cyclone, after separation hardly containing the gas of coal dust as burnout degree, be admitted in boiler furnace through fire air nozzle; One tunnel enters wind powder separator, and the microfine coal being separated acquisition with colleges and universities separators mixes, and the coal powder density of mixed tertiary air improves relatively, is admitted in boiler furnace through tertiary air spout.From the above-mentioned course of work, the tertiary air that concentration is on the low side in background technology, the coal powder density that the present invention sends into the tertiary air of boiler furnace is higher, thus reduce for main combustion zone so around interference, improve the stability of burning.And, above tertiary air, arrange fire air nozzle, utilize tertiary air to be separated the gas obtained and use as burnout degree, make unburnt coal dust further after-flame herein, reduce unburned combustible in fly ash.Visible, this system forms the deep-graded of air in boiler furnace, also reduces the discharge capacity of furnace outlet NOx, reduces the operating cost of the circulating reduction systems such as SCR.
Preferably, described weary Flash Gas Compression Skid System also comprises weary gas Pulverized Coal Bin; The described discharge of described efficient cyclone connects the described coal dust import of described air and powder mixer by described weary gas Pulverized Coal Bin, and is provided with powder adjustable valve between described weary gas Pulverized Coal Bin and the coal dust import of described air and powder mixer.
The opening of powder adjustable valve can be regulated according to actual condition, to regulate the actual tertiary air concentration entering tertiary air spout, can adapt with burner hearth current loads, reach clean-burning object.
Preferably, described powder adjustable valve is electric lock pneumatic device.
The volume of electric lock pneumatic device is little, reliable operation, and sealing and anti-wear performance good, be suitable for the control of pulverized coal flow, and electric-linked control can be realized with other parts of system, improve automaticity.
Preferably, described efficient cyclone is sack cleaner or efficient cyclone separator.
These two kinds of separators are easy to arrange, the working environment of suitable coal dust.
Preferably, described weary Flash Gas Compression Skid System also comprises booster fan; The air outlet of described efficient cyclone connects described fire air nozzle by described booster fan.
Booster fan contributes to sending into fire air nozzle containing the wind of coal dust as burnout degree hardly using what separate, and the burnout degree air quantity, the wind speed that enter fire air nozzle can be regulated, the interference to main combustion zone can be reduced further, and the flexibility of system fading margin can be strengthened, reach in time according to the object of fact adjustment burnout degree air quantity.
Preferably, described weary Flash Gas Compression Skid System also comprises air door; Described air door is located on the path of described booster fan air inlet and described efficient cyclone air outlet.
This air door can control the air quantity entering booster fan, improves the flexibility that air quantity regulates further.
Preferably, described efficient cyclone, described both air and powder mixers, the path that at least one and described tertiary air export is provided with air door.
Air door can control the air quantity of tertiary air, then can control the air quantity entering efficient cyclone, air and powder mixer.
Preferably, the Secondary Air pipeline of this system connects described fire air nozzle.
What Secondary Air and efficient cyclone were separated mix containing the wind of coal dust hardly, sends in burner hearth as burnout degree.According to the isolated air quantity of efficient cyclone, the Secondary Air air quantity mixed with it can be regulated, to obtain suitable burnout degree air quantity; In addition, Secondary Air is generally hot blast, can regulate the temperature of burnout degree, in order to avoid the too low burnout degree of temperature affects efficiency of combustion, disturbs main combustion zone.
Preferably, the Secondary Air pipeline of this system connects described tertiary air spout.
Secondary Air is the adjustable tertiary air air quantity entering burner hearth both, also its temperature adjustable.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of typical middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system;
Fig. 2 is the schematic diagram of a kind of specific embodiment of middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system provided by the present invention;
Fig. 3 is the structural representation of weary Flash Gas Compression Skid System in Fig. 2.
In Fig. 1:
11 feeders, 12 coal pulverizers, 13 wood block separators, 14 mill separators, 15 pulverized-coal collectors, 16 Pulverized Coal Bin, 17 machine supplying powders, 10 boilers, 101 tertiary air spouts, 102 burners, 1a pressure fan, 1b primary air fan;
In Fig. 2-3: 21 feeders, 22 down drying pipes, 23 coal pulverizers, 24 wood block separators, 25 mill separators, 26 pulverized-coal collectors, 27 Pulverized Coal Bin, 271 machine supplying powders, 281 the 4th air doors, 282 main road Powder discharging fans, 283 tertiary air casees, 29 main road air and powder mixers, 30 weary Flash Gas Compression Skid Systems, 301 efficient cyclones, 302 air and powder mixers, 303 weary gas Pulverized Coal Bin, 304 electric lock pneumatic devices, 305 booster fans, 306 first air doors, 307 second air doors, 308 the 3rd air doors, 309 the 4th air doors, 20 boilers, 201 fire air nozzle, 202 tertiary air spouts, 203 burners, 2a pressure fan, 2b primary air fan, 2c air preheater, 2d secondary air box, 2d1 tendencies door, 2d2 the 6th air door
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to the schematic diagram that Fig. 2-3, Fig. 2 is a kind of specific embodiment of middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system provided by the present invention; Fig. 3 is the structural representation of weary Flash Gas Compression Skid System in Fig. 2.
Powder feeding pulverized coal preparation system in this embodiment, comprise boiler 20 and tertiary air outlet, boiler 20 is provided with tertiary air spout 202.Can understand in conjunction with background technology, tertiary air outlet is generally the air outlet of pulverized-coal collector 26.In Fig. 2, this powder feeding pulverized coal preparation system comprises feeder 21, coal pulverizer 23, mill separator 25, pulverized-coal collector 26 and Pulverized Coal Bin 27, and feeder 21 coal supply, to coal pulverizer 23, can be passed through down drying pipe 22 and enters coal pulverizer 23 again, to keep the drying of coal.
Carry under the First air effect that the coal dust made mainly provides at primary air fan 2b, (also wood block separator 24 can be set before mill separator 25 through mill separator 25, carry out just point), pulverized-coal collector 26, be separated most of coal dust afterwards and fall into Pulverized Coal Bin 27, mix in the main road air and powder mixer 29 of tertiary air with First air and send into burner 203 afterwards; And the weary band of gas after being separated has a small amount of coal dust, discharge pulverized-coal collector 26 as tertiary air, the air outlet of pulverized-coal collector 26 is tertiary air outlet.Certainly, when adopting other separators to be separated coal dust, tertiary air outlet also correspondingly changes.Coal dust amount in Pulverized Coal Bin 27 does not need consistent with boiler oil amount, controls the supply of coal dust by machine supplying powder 271.
Tertiary air outlet in the present embodiment connects weary Flash Gas Compression Skid System 30, and the tertiary air of namely discharging need process through weary Flash Gas Compression Skid System 30.Weary Flash Gas Compression Skid System 30 comprises the efficient cyclone 301 and air and powder mixer 302 that are arranged in parallel, and namely efficient cyclone 301 and air and powder mixer 302 are in two branch roads.Efficient cyclone 301 can be separated further to the tertiary air of low concentration, separable go out about more than 99.5% microfine coal, isolated gas is then hardly containing coal dust.Can realize this kind of separator be efficiently separated, can be sack cleaner or efficient cyclone separator, and these two kinds of separators are easy to arrange, are suitable for this kind of operating mode, certainly, also can select other efficient separators.
Tertiary air outlet connects the branch road at efficient cyclone 301 and air and powder mixer 302 place simultaneously, then a part of tertiary air of discharging carries out separation of air from dust through efficient cyclone 301, and another part tertiary air enters air and powder mixer 302.And the discharge of efficient cyclone 301 connects the coal dust import of air and powder mixer 302, the coal dust that namely efficient cyclone 301 is separated can enter in air and powder mixer 302, carries out wind powder mix with the tertiary air of another part.In addition, boiler 20 is provided with fire air nozzle 201, and fire air nozzle 201 is located on tertiary air spout 202, and tertiary air spout 202 is positioned on main combustion zone.Wherein, the air outlet of efficient cyclone 301 connects fire air nozzle 201, and the wind powder mixed export of air and powder mixer 302 connects tertiary air spout 202.
The course of work of this powder feeding pulverized coal preparation system is:
Tertiary air is divided into two-way, and a road enters efficient cyclone 301, after separation hardly containing the gas of coal dust as burnout degree, be admitted in boiler 20 burner hearth through fire air nozzle 201;
One tunnel enters air and powder mixer 302, and the microfine coal being separated acquisition with efficient cyclone 301 mixes, and the coal powder density of mixed tertiary air improves relatively, is admitted in boiler 20 burner hearth through tertiary air spout 202.
From the above-mentioned course of work, the tertiary air that concentration is on the low side in background technology, the coal powder density sending into the tertiary air of boiler 20 burner hearth in the present embodiment is higher, thus reduces the interference of burning for main combustion zone, improves the stability of burning.And, above tertiary air, arrange fire air nozzle 201, utilize tertiary air to be separated the gas obtained and use as burnout degree, make unburnt coal dust further after-flame herein, reduce unburned combustible in fly ash.Visible, this system becomes the deep-graded of air at boiler 20 freeze profile, also reduces the discharge capacity of furnace outlet NOx, reduces the operating cost of the circulating reduction systems such as SCR.
Further, weary Flash Gas Compression Skid System 30 can also comprise weary gas Pulverized Coal Bin 303, as shown in Figure 2, the discharge of efficient cyclone 301 connects the coal dust import of air and powder mixer 302 by weary gas Pulverized Coal Bin 303, and is provided with powder adjustable valve between weary gas Pulverized Coal Bin 303 and the coal dust import of air and powder mixer 302.The coal dust then separated by efficient cyclone 301 is introduced into weary gas Pulverized Coal Bin 303 and stores, and is regulated the powder amount entering air and powder mixer 302 by powder adjustable valve.Design like this, can regulate the opening of powder adjustable valve according to actual condition, to regulate the actual tertiary air concentration entering tertiary air spout 202, can adapt, reach clean-burning object with burner hearth current loads.
Powder adjustable valve can be specifically electric lock pneumatic device 304, and the volume of electric lock pneumatic device 304 is little, reliable operation, and sealing and anti-wear performance good, be suitable for the control of pulverized coal flow, and electric-linked control can be realized with other parts of system, improve automaticity.Certainly, the common valve body that can adjust openings of sizes is adopted also to be feasible.
For above-described embodiment, weary Flash Gas Compression Skid System 30 can also comprise booster fan 305, and the air outlet of efficient cyclone 301 connects fire air nozzle 201 by booster fan 305.Booster fan 305 contributes to sending into fire air nozzle 201 containing the wind of coal dust as burnout degree hardly using what separate, and the burnout degree air quantity, the wind speed that enter fire air nozzle 201 can be regulated, the interference to main combustion zone can be reduced further, and the flexibility of system fading margin can be strengthened, reach in time according to the object of fact adjustment burnout degree air quantity.The path of the air outlet of booster fan 305 and efficient cyclone 301 can be arranged the first air door 306, to control the air quantity entering booster fan 305, improve the flexibility that air quantity regulates further.
In addition, efficient cyclone 301, both air and powder mixers 302, the path that at least one and tertiary air export is provided with air door.Air door can control the air quantity of tertiary air, then can control the air quantity entering efficient cyclone 301, air and powder mixer 302.As shown in Figure 2, the adjustment branch road that efficient cyclone 301 and air and powder mixer 302 and tertiary air exports being respectively equipped with the second air door 307 and the 3rd air door 308, two air doors is more flexible, independence.Be appreciated that and only air door be set on a branch road, also can regulate the allocation proportion of air quantity.Adjustment for air quantity has numerous form, such as, when the coal dust content not entering the tertiary air before weary Flash Gas Compression Skid System 30 is relatively high, can reduce the air quantity entering efficient cyclone 301; Otherwise, then the air quantity entering air and powder mixer 302 can be reduced.Certainly, in practical adjustments process, the allocation proportion of tertiary air between efficient cyclone 301, air and powder mixer 302 can also be regulated in conjunction with factors such as tertiary air Actual combustion demand, burner hearth actual loads.
Except being entered the air quantity of efficient cyclone 301, air and powder mixer 302 by the airdoor control be arranged on branch road, the main road of tertiary air also can arrange air door and Powder discharging fan, the 4th air door 281 as shown in Figure 2 and main road Powder discharging fan 282, the adjustable total blast volume entering efficient cyclone 301, air and powder mixer 302.Also tertiary air case 283 can be set after main road Powder discharging fan 282, to coordinate main road Powder discharging fan 282, improve the air blast effect of blower fan.
For the various embodiments described above, the Secondary Air pipeline of this system can connect fire air nozzle 201.As shown in Figure 2, the powder process powder feed system of the type is generally provided with pressure fan 2a, secondary air box 2d to be formed and feeding secondary wind, and Secondary Air is generally heated to be hot blast by air preheater 2c, and First air part is by air preheater 2c, heating.Secondary Air mixes in boiler 20 with First air, improves efficiency of combustion.Herein, part Secondary Air also can enter fire air nozzle 201 through Secondary Air pipeline, that separates with efficient cyclone 301 mixes containing the wind of coal dust hardly, sends in burner hearth as burnout degree.According to the isolated air quantity of efficient cyclone 301, the Secondary Air air quantity mixed with it can be regulated, to obtain suitable burnout degree air quantity; In addition, Secondary Air is generally hot blast, lower from the temperature of the tertiary air of tertiary air outlet discharge, Secondary Air mixes with the isolated wind of efficient cyclone 301, the temperature of burnout degree can also be regulated, in order to avoid the too low burnout degree of temperature affects efficiency of combustion, disturb main combustion zone.
Now, booster fan 305 and the path of fire air nozzle 201 can arrange the 4th air door 309, when there is no weary gas, the 4th air door 309 can be closed, directly provide burnout degree by Secondary Air pipeline.
Secondary Air pipeline also can connect tertiary air spout 202, as shown in Figure 2.In the present embodiment, the tertiary air at tertiary air spout 202 place comes from air and powder mixer 302, similar to the above, and Secondary Air is the adjustable tertiary air air quantity entering burner hearth both, also its temperature adjustable.
On the path of Secondary Air pipeline and fire air nozzle 201 and/or tertiary air spout 202, can air door be set, tendencies door 2d1 as shown in Figure 2 and the 6th air door 2d2.Air door can regulate the air quantity entering fire air nozzle 201 and/or tertiary air spout 202, adapts to make the air quantity after adjustment and actual condition.
Above a kind of middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. a middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system, comprise boiler (20) and tertiary air outlet, described boiler (20) is provided with tertiary air spout (202), it is characterized in that, described tertiary air outlet connects weary Flash Gas Compression Skid System (30); Described weary Flash Gas Compression Skid System (30) comprises the efficient cyclone (301) and air and powder mixer (302) that are arranged in parallel;
Described boiler (20) is provided with fire air nozzle (201), and described tertiary air outlet connects described efficient cyclone (301) and described air and powder mixer (302) simultaneously; The air outlet of described efficient cyclone (301) connects described fire air nozzle (201), its discharge connects the coal dust import of described air and powder mixer (302), and the wind powder mixed export of described air and powder mixer (302) connects described tertiary air spout (202).
2. middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as claimed in claim 1, it is characterized in that, described weary Flash Gas Compression Skid System (30) also comprises weary gas Pulverized Coal Bin (303); The described discharge of described efficient cyclone (301) connects the described coal dust import of described air and powder mixer (302) by described weary gas Pulverized Coal Bin (303), and is provided with powder adjustable valve between the coal dust import of described weary gas Pulverized Coal Bin (303) and described air and powder mixer (302).
3. middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as claimed in claim 2, it is characterized in that, described powder adjustable valve is electric lock pneumatic device (304).
4. middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as claimed in claim 1, it is characterized in that, described efficient cyclone (301) is sack cleaner or efficient cyclone separator.
5. middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as claimed in claim 1, it is characterized in that, described weary Flash Gas Compression Skid System (30) also comprises booster fan (305); The air outlet of described efficient cyclone (301) connects described fire air nozzle (201) by described booster fan (305).
6. middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as claimed in claim 5, it is characterized in that, described weary Flash Gas Compression Skid System (30) also comprises air door; Described air door is located on the path of described booster fan (305) air inlet and described efficient cyclone (301) air outlet.
7. middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as claimed in claim 1, it is characterized in that, both described efficient cyclone (301), described air and powder mixer (302), the path that at least one and described tertiary air export is provided with air door.
8. the middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as described in any one of claim 1-7, it is characterized in that, the Secondary Air pipeline of this system connects described fire air nozzle (201).
9. the middle warehouse formula pulverized coal carried by hot air pulverized coal preparation system as described in any one of claim 1-7, is characterized in that, the Secondary Air pipeline of this system connects described tertiary air spout (202).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003232503A (en) * | 2002-02-06 | 2003-08-22 | Babcock Hitachi Kk | Pulverized coal combustion method and combustion device |
| CN101575541A (en) * | 2009-06-10 | 2009-11-11 | 煤炭科学研究总院 | System and process for coal powder preparation |
| CN201589289U (en) * | 2010-02-05 | 2010-09-22 | 哈尔滨工业大学 | Exhaust gas and hot air double-medium powder delivery system |
| JP2010242999A (en) * | 2009-04-02 | 2010-10-28 | Babcock Hitachi Kk | Method and device for directly pulverizing and burning woody biomass and boiler system |
| CN202141041U (en) * | 2011-05-27 | 2012-02-08 | 烟台龙源电力技术股份有限公司 | Intermediate storage-type coal pulverizing system pulverized coal boiler and tertiary air distribution structure thereof |
| CN102798134A (en) * | 2011-05-27 | 2012-11-28 | 中国电力工程顾问集团东北电力设计院 | Furnace smoke drying and water recycling warehouse-type fan mill hot air powder supplying and making system |
| CN102889606A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite steel ball mill |
| CN202813353U (en) * | 2012-09-28 | 2013-03-20 | 烟台龙源电力技术股份有限公司 | Intermediate silo type milling boiler |
| CN103216840A (en) * | 2013-04-15 | 2013-07-24 | 黄立新 | Storage-type super-low nitric oxide system in coal fired boiler coal mill |
| CN203586193U (en) * | 2013-07-31 | 2014-05-07 | 烟台龙源电力技术股份有限公司 | Middle storing bin type hot wind powder feeding and manufacturing system |
-
2013
- 2013-07-31 CN CN201310329965.0A patent/CN104344398B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003232503A (en) * | 2002-02-06 | 2003-08-22 | Babcock Hitachi Kk | Pulverized coal combustion method and combustion device |
| JP2010242999A (en) * | 2009-04-02 | 2010-10-28 | Babcock Hitachi Kk | Method and device for directly pulverizing and burning woody biomass and boiler system |
| CN101575541A (en) * | 2009-06-10 | 2009-11-11 | 煤炭科学研究总院 | System and process for coal powder preparation |
| CN201589289U (en) * | 2010-02-05 | 2010-09-22 | 哈尔滨工业大学 | Exhaust gas and hot air double-medium powder delivery system |
| CN202141041U (en) * | 2011-05-27 | 2012-02-08 | 烟台龙源电力技术股份有限公司 | Intermediate storage-type coal pulverizing system pulverized coal boiler and tertiary air distribution structure thereof |
| CN102798134A (en) * | 2011-05-27 | 2012-11-28 | 中国电力工程顾问集团东北电力设计院 | Furnace smoke drying and water recycling warehouse-type fan mill hot air powder supplying and making system |
| CN102889606A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite steel ball mill |
| CN202813353U (en) * | 2012-09-28 | 2013-03-20 | 烟台龙源电力技术股份有限公司 | Intermediate silo type milling boiler |
| CN103216840A (en) * | 2013-04-15 | 2013-07-24 | 黄立新 | Storage-type super-low nitric oxide system in coal fired boiler coal mill |
| CN203586193U (en) * | 2013-07-31 | 2014-05-07 | 烟台龙源电力技术股份有限公司 | Middle storing bin type hot wind powder feeding and manufacturing system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776440A (en) * | 2015-04-23 | 2015-07-15 | 西安西热锅炉环保工程有限公司 | Middle storage type multifunctional pulverized coal feeding system for steel ball coal mill |
| CN104913328A (en) * | 2015-05-14 | 2015-09-16 | 芜湖鸣人热能设备有限公司 | Industrial furnace coal feed mechanism |
| CN104913328B (en) * | 2015-05-14 | 2018-05-04 | 芜湖鸣人热能设备有限公司 | A kind of industrial furnace is delivered coal mechanism |
| CN107327832A (en) * | 2017-02-27 | 2017-11-07 | 上海发电设备成套设计研究院 | The ultra-low load steady for improving boiler combustion characteristic for fired power generating unit fires system |
| CN107327832B (en) * | 2017-02-27 | 2019-07-09 | 上海发电设备成套设计研究院 | The ultra-low load steady for improving boiler combustion characteristic for fired power generating unit fires system |
| CN107327833A (en) * | 2017-08-15 | 2017-11-07 | 长沙理工大学 | Boiler powder process exhaust gas low NOxCombustion system |
| CN107327833B (en) * | 2017-08-15 | 2023-11-07 | 长沙理工大学 | Low NO of boiler powder process exhaust gas x Combustion system |
| CN108443907A (en) * | 2018-04-04 | 2018-08-24 | 武汉武锅能源工程有限公司 | A kind of pulverized coal preparation system and its milling method of medium-speed pulverizer warehouse formula pulverized-coal fired boiler |
| CN109798516A (en) * | 2019-01-08 | 2019-05-24 | 武汉耀立环保工程有限公司 | The warehouse style pulverized coal carried by hot air method of efficient low-discharging and its system |
| CN110285442A (en) * | 2019-06-24 | 2019-09-27 | 亿利洁能科技（宿迁）有限公司 | Fine coal ash handling equipment |
| CN114673986A (en) * | 2022-03-24 | 2022-06-28 | 西安热工研究院有限公司 | System for improving powder burnout performance of tertiary air zone |
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