CN103353122A - Industrial boiler system and method for clean combustion of carbon particles - Google Patents
Industrial boiler system and method for clean combustion of carbon particles Download PDFInfo
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- CN103353122A CN103353122A CN 201310238189 CN201310238189A CN103353122A CN 103353122 A CN103353122 A CN 103353122A CN 201310238189 CN201310238189 CN 201310238189 CN 201310238189 A CN201310238189 A CN 201310238189A CN 103353122 A CN103353122 A CN 103353122A
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 180
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 177
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002245 particle Substances 0.000 title abstract 9
- 239000003245 coal Substances 0.000 claims abstract description 91
- 239000000843 powder Substances 0.000 claims abstract description 77
- 238000003860 storage Methods 0.000 claims abstract description 48
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 26
- 239000011593 sulfur Substances 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims description 170
- 235000013312 flour Nutrition 0.000 claims description 32
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 28
- 239000001301 oxygen Substances 0.000 claims description 28
- 238000000889 atomisation Methods 0.000 claims description 27
- 238000009826 distribution Methods 0.000 claims description 27
- 238000009841 combustion method Methods 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 5
- 238000000197 pyrolysis Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011280 coal tar Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000011086 high cleaning Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 8
- 238000006477 desulfuration reaction Methods 0.000 abstract description 6
- 239000003077 lignite Substances 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 150000001721 carbon Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of environment-friendly energy application, relates to an industrial boiler system and a method for clean combustion of carbon particles, and solves the technical problem of an unreasonable design in the prior art. The industrial boiler system for clean combustion of the carbon particles comprises a raw coal storage, a clean carbon particle milling machine, a powder collection device, a first carbon particle storing tower, a second carbon particle storing tower, an efficient carbon particle combustor, an industrial low temperature combustion boiler and a dust removing device. The industrial boiler system and the method provided by the invention have the advantages that firstly, the clean combustion of coal is realized, timely ignition, rapid combustion and complete burning out of the carbon particles can be ensured, and desulfuration and denitrification devices for flue gas can be omitted, so that the device investment cost as well as the operation and maintenance costs can be saved; secondly, low-temperature combustion of clean carbon particles can be realized, thermal-type NOX is greatly reduced, and low-sulfur and low-nitrogen combustion is realized, so that the purpose of low-sulfur and low-nitrogen emission is realized; thirdly, the coal resources are comprehensively utilized, the economic efficiency is high, especially the utilization ratio of coal such as brown coal is greatly increased, and waste is changed into treasure.
Description
Technical field
The invention belongs to the energy environment protection applied technical field, relate to the Coal Clean combustion technology, especially relate to a kind of carbon granule clean combustion industry steam generator system and carbon granule clean combustion method.
Background technology
In recent years, haze weather, acid rain, dust pollution event take place frequently, and have had a strong impact on people's productive life.Coal is the industrial important energy source of China, but it exploitation and utilize and but produced serious pollution problem in the process.How to utilize efficiently resource and reduce to greatest extent pollution, become the urgent task of pendulum in face of ours.Except producing volume of smoke, in combustion process, also can form the harmful substances such as carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen oxide, organic compound, bioxin and flue dust during coal combustion.Coal fire discharged a large amount of harmful substances have caused deterioration and the large-scale acid deposition of air quality, and environment is caused serious pollution.The environmental problem that pollution that caused by coal burning causes has become the restraining factors of China's sustainable economic development.
Coal combustion technology falls behind, and efficiency of fire coal lowly is the serious one of the main reasons of coal combustion pollution.For the pollutant that produces in the coal combustion, research and develop out at present the various control technology, its main flow is clean coal technology.Because coal-fired major pollutants to atmosphere are sulfur dioxide, so according to the sulphur removal stage, clean coal technology purifies before being divided into again burning, burning purifies, combustion grand-mother after-purification technology, the coal conversion is owing to having improved the energy quality of coal in addition, improved energy resource structure, also become an importance of clean coal technology, this cubic surface technology has formed the main body of present pollution that caused by coal burning control technology.Purification techniques mainly carries out desulfurization, solid sulphuring treatment to raw coal before the burning, to cut down the sulfur content of polluting the source.Desulfurization is processed and is adopted coal preparation technique (being the coal washing technology), by methods such as Physical (such as Gravity Separation or froth flotation etc.), chemical method or microbial methods, remove ash content contained in the raw coal and pyritic sulfur, block the source of sulphur and ash content, to be controlled at the pollutant that produces in the coal combustion.
For this reason, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of small and medium-sized industrial coal powder boilers system [application number: 200510080337.9], it comprises the stokehold fuel pulverizing plant, feeding device, burner, boiler body device, dust-removing desulfurating apparatus and automaton is characterized in that: described stokehold fuel pulverizing plant comprises: high-pressure pump, baffle plate type separator, the pipe of delivering coal, coal powder separating machine, coal pulverizer, cyclone separator, sack cleaner, intermediate bunker and exhaust blower; The described coal dust device that supplies comprises coal chute, material blanking tube, ajutage; Described coal powder burner comprises from inside to outside sheathed successively central air hose, airduct, inner second air pipe and an outer second air pipe; Described boiler body device comprises: shell, fire cylinder and two, three return duct; Described dust-removing desulfurating apparatus comprises cyclone separator, sack cleaner, desulfurizing tower, exhaust blower and chimney, the present invention can realize the meticulous powder process of coal, granularity reaches more than 200 orders, has igniting and low-temperature burning is effective, the thermal efficiency is high, can realize the characteristics such as fume emission is up to standard, and it can be used as heating and heating equipment is widely used in industrial and the civil buildings.
Although having, such scheme reduced to a certain extent pollution that caused by coal burning, but still exist following technical problem: 1, the quality requirement to coal is higher, be difficult to utilize the coal of the types such as brown coal, and the utilization rate to coals such as brown coal is lower, be difficult to coal is taken full advantage of, bring into play its maximum value.2, integral device is complicated, and cost is high, and the automaticity of work is lower, and labor intensity of operating staff is large.3, in the coal burning process, the discharging of pollutant still is difficult to the situation that reaches comparatively desirable.
Summary of the invention
The objective of the invention is for the problems referred to above, provide a kind of reasonable in design, simple in structure, can realize the carbon granule clean combustion industry steam generator system of Coal Clean burning.
Another object of the present invention is for the problems referred to above, provides a kind of easy to implement, can fully utilize the coal resource, and economic benefit is high, the carbon granule clean combustion method of energy-conserving and environment-protective.
For achieving the above object, the present invention has adopted following technical proposal: this carbon granule clean combustion industry steam generator system, it is characterized in that, native system comprises the run coal bin that links to each other successively, clean carbon granule flour mill, receive powder equipment, the first clean carbon granule storage column, the second clean carbon granule storage column, efficient carbon granule burner, low-temperature burning Industrial Boiler and cleaner, described run coal bin links to each other with clean carbon granule flour mill by the first conveying mechanism, described clean carbon granule flour mill is by conveyance conduit and receipts powder equipment, described receipts powder equipment links to each other with the first clean carbon granule storage column by the second conveyor structure, the described first clean carbon granule storage column links to each other with the second clean carbon granule storage column by the pulverized coal conveying pipe, the described second clean carbon granule storage column links to each other with efficient carbon granule burner by an airduct, described efficient carbon granule burner is connected on the low-temperature burning Industrial Boiler, is connected with cleaner on the described low-temperature burning Industrial Boiler.
In above-mentioned carbon granule clean combustion industry steam generator system, described efficient carbon granule burner is provided with wind powder turbulent flow atomization structure and multistage oxygen enrichment air distribution device, described wind powder turbulent flow atomization structure links to each other with an airduct, described multistage oxygen enrichment air distribution device is arranged on wind powder turbulent flow atomization structure one end, is arranged with furnace hopper outside multistage oxygen enrichment air distribution device.
In above-mentioned carbon granule clean combustion industry steam generator system, described multistage oxygen enrichment air distribution device comprises the some baffle plates that are arranged in the efficient carbon granule burner and at least one secondary air channel that is connected on the efficient carbon granule burner; Described baffle plate ringwise and each baffle plate be concentric-ring pattern and distribute, described wind powder turbulent flow atomization structure is arranged on the end that multistage oxygen enrichment air distribution device is positioned at the baffle plate at center, described secondary air channel is connected with the passage that is formed between each baffle plate, and each baffle plate can make air-flow axially distribution and the participation burning the low-temperature burning Industrial Boiler on the extended line of wind powder turbulent flow atomization structure from secondary air channel output.
In above-mentioned carbon granule clean combustion industry steam generator system, the top of described clean carbon granule flour mill is provided with and can will sets the carbon granule sorting of granularity and from the negative pressure powder concentrator of clean carbon granule flour mill top sucking-off, described negative pressure powder concentrator links to each other with the conveyance conduit that is tilted to upper setting.
In above-mentioned carbon granule clean combustion industry steam generator system, described the first conveying mechanism comprises the first pipeline that is connected between run coal bin bottom and the clean carbon granule flour mill bottom, be provided with the first screw rod in described the first pipeline, described the first screw rod links to each other with the first driver; Be provided with the first control valve between described run coal bin bottom and the first pipeline.
In above-mentioned carbon granule clean combustion industry steam generator system, described receipts powder equipment comprises to be received the powder storehouse and is connected to the first negative-pressure air fan of receiving on the powder storehouse, is provided with some discharge buckets in the bottom of receiving the powder storehouse, is respectively equipped with the second control valve at each discharge bucket; Described second conveyor structure comprises the second pipe that is connected between each discharge bucket and the first clean carbon granule storage column, be provided with the second screw rod in the described second pipe, described the second screw rod links to each other with the second driver, and described discharge bucket axially evenly distributes along described second pipe.
In above-mentioned carbon granule clean combustion industry steam generator system, the bottom of the described second clean carbon granule storage column is provided with the 3rd control valve and weighing instrument, is connected with the second negative-pressure air fan at the pulverized coal conveying pipe.
In above-mentioned carbon granule clean combustion industry steam generator system, the carbon granule of described setting granularity is granularity≤300 purpose carbon granules; The first clean carbon granule storage column and/or the second clean carbon granule storage column are provided with temperature sensor, pressure sensor, CO concentration detector, oxygen content detector, breather valve and explosion vent apparatus, described temperature sensor, pressure sensor, CO concentration detector and oxygen content detector all link to each other with control circuit, are connected with alarm at control circuit.
A kind of carbon granule clean combustion method is characterized in that, this method comprises the steps: A, the ature of coal process is cleaned ash disposal, sulphur removal, and destructive distillation upgrading oven dry obtains low ash, low-sulfur coal, semicoke and coal tar and other materials; B, ash, the low-sulfur coal shape of claying into power be will hang down, low ash, the high cleaning carbon granule of low-sulfur fuel obtained; C, by wind powder turbulent flow atomizing and multistage air distribution, realize the low-temperature burning of clean carbon granule; D, the tail gas after will burning carry out dedusting recycling, dust emission concentration≤50mg/Nm
3
In above-mentioned carbon granule clean combustion method, described low ash, low-sulfur coal is delivered to first run coal bin, the first control valve by the run coal bin below is delivered to the first conveying mechanism, the first conveying mechanism will hang down ash, low-sulfur coal is delivered to clean carbon granule flour mill, to hang down ash by clean carbon granule flour mill, low-sulfur coal carries out grinding flour, negative pressure powder concentrator above clean carbon granule flour mill upwards is delivered to the receipts powder equipment with granularity≤300 purpose carbon granule sucking-offs and by conveyance conduit, described receipts powder equipment is delivered to the first clean carbon granule storage column by the second conveyor structure of being located at its below with carbon granule, the first clean carbon granule storage column is carried by strength carbon granule is delivered to the second clean carbon granule storage column, the second clean carbon granule storage column is weighed by weighing instrument and is exported carbon granule and deliver to efficient carbon granule burner by pneumatic transporting, the wind powder turbulent flow atomization structure of described efficient carbon granule burner carries out the turbulent flow atomizing with carbon granule by airduct and wind powder turbulent flow atomization structure and is made from the air-flow of secondary air channel output by multistage oxygen enrichment air distribution device axially distributing on the extended line of wind powder turbulent flow atomization structure and participate in burning the low-temperature burning Industrial Boiler, the thermal efficiency of described low-temperature burning Industrial Boiler 〉=90%, the tail gas after the burning discharges after being connected to the cleaner dedusting on the low-temperature burning Industrial Boiler.
Compared with prior art, the advantage of this carbon granule clean combustion industry steam generator system and carbon granule clean combustion method is: 1, reasonable in design, simple in structure, can realize the Coal Clean burning, guarantee in time lighting of carbon granule, rapidly burning and burning fully, flue gas need not to increase desulfurization, denitrification equipment again, has saved equipment investment and operational and administrative expenses.2, rational combustion space has guaranteed abundant burning time of clean carbon granule to effectively reduce ash content carbon.3, realize the low-temperature burning of clean carbon granule, thermal NO
XGreatly reduce, realize low-sulfur, low nitrogen burning, low-sulfur, low-nitrogen discharged purpose.4, furnace volume heat release rate reasonable in design, section thermic load are so that uniformity of temperature profile and rationally, further reduce the concentration of emission of nitride in the combustion space.5, can fully utilize the coal resource, economic benefit is high, particularly the utilization rate of the coals such as brown coal is significantly promoted, and turns waste into wealth.
Description of drawings
Fig. 1 is structural representation provided by the invention.
Fig. 2 is partial structurtes schematic diagram provided by the invention.
Among the figure, run coal bin 1, clean carbon granule flour mill 2, receive powder equipment 3, the first clean carbon granule storage column 4, the second clean carbon granule storage column 5, efficient carbon granule burner 6, low-temperature burning Industrial Boiler 7, cleaner 8, the first conveying mechanism 9, conveyance conduit 10, second conveyor structure 11, pulverized coal conveying pipe 12, an airduct 13, wind powder turbulent flow atomization structure 14, multistage oxygen enrichment air distribution device 15, furnace hopper 16, baffle plate 17, secondary air channel 18, negative pressure powder concentrator 19, the first pipeline 20, the first screw rod 21, the first driver 22, the first control valve 23, receive powder storehouse 24, the first negative-pressure air fan 25, discharge bucket 26, second pipe 27, the second screw rod 28, the second driver 29, the 3rd control valve 30, weighing instrument 31, the second negative-pressure air fan 32, the second control valve 33, the 4th control valve 34, the 3rd negative-pressure air fan 35, passage 36.
The specific embodiment
As shown in Figure 1, this carbon granule clean combustion industry steam generator system comprises the run coal bin 1 that links to each other successively, clean carbon granule flour mill 2, receipts powder equipment 3, the first clean carbon granule storage column 4, the second clean carbon granule storage column 5, efficient carbon granule burner 6, low-temperature burning Industrial Boiler 7 and cleaner 8.Run coal bin 1 links to each other with clean carbon granule flour mill 2 by the first conveying mechanism 9, described clean carbon granule flour mill 2 is by conveyance conduit 10 and receipts powder equipment 3, described receipts powder equipment 3 links to each other with the first clean carbon granule storage column 4 by second conveyor structure 11, the described first clean carbon granule storage column 4 links to each other with the second clean carbon granule storage column 5 by pulverized coal conveying pipe 12, the described second clean carbon granule storage column 5 links to each other with efficient carbon granule burner 6 by an airduct 13, described efficient carbon granule burner 6 is connected on the low-temperature burning Industrial Boiler 7, is connected with cleaner 8 on the described low-temperature burning Industrial Boiler 7.
Efficient carbon granule burner 6 is provided with wind powder turbulent flow atomization structure 14 and multistage oxygen enrichment air distribution device 15, described wind powder turbulent flow atomization structure 14 links to each other with an airduct 13, described multistage oxygen enrichment air distribution device 15 is arranged on wind powder turbulent flow atomization structure 14 1 ends, is arranged with furnace hopper 16 outside multistage oxygen enrichment air distribution device 15.
As shown in Figure 2, multistage oxygen enrichment air distribution device 15 comprises the some baffle plates 17 that are arranged in the efficient carbon granule burner 6 and at least one secondary air channel 18 that is connected on the efficient carbon granule burner 6; Described baffle plate 17 ringwise and each baffle plate 17 be concentric-ring pattern and distribute, described wind powder turbulent flow atomization structure 14 is arranged on the end that multistage oxygen enrichment air distribution device 15 is positioned at the baffle plate 17 at center, described secondary air channel 18 is connected with the passage 36 that is formed between each baffle plate 17, and each baffle plate 17 can make air-flow axially distribution and the participation burning low-temperature burning Industrial Boiler 7 on the extended line of wind powder turbulent flow atomization structure 14 from secondary air channel 18 outputs.In the present embodiment, the axial length of each baffle plate 17 increases gradually from inside to outside or reduces gradually or equate, thereby realizes reasonable distribution and the supply of combustion air, realizes low-temperature burning.Owing to adopt low-temperature burning, so the inwall of furnace hopper 16 can not produce a large amount of slagging scorification because of the high-temp combustion melting because of the impurity that is mingled with inevitably in the carbon granule.
The top of clean carbon granule flour mill 2 is provided with and can will sets the carbon granule sorting of granularity and from the negative pressure powder concentrator 19 of clean carbon granule flour mill 2 top sucking-offs, negative pressure powder concentrator 19 links to each other with the conveyance conduit 10 that is tilted to upper setting.More particularly, the carbon granule of setting granularity is granularity≤300 purpose carbon granules.Preferably, the carbon granule of setting granularity is that granularity is less than 200 purpose carbon granules.The first conveying mechanism 9 comprises the first pipeline 20 that is connected between run coal bin 1 bottom and clean carbon granule flour mill 2 bottoms, is provided with the first screw rod 21 in described the first pipeline 20, and described the first screw rod 21 links to each other with the first driver 22; Be provided with the first control valve 23 between described run coal bin 1 bottom and the first pipeline 20.
Receive powder equipment 3 and comprise receipts powder storehouse 24 and be connected to the first negative-pressure air fan 25 of receiving on the powder storehouse 24, be provided with some discharge buckets 26 in the bottom of receiving powder storehouse 24, be respectively equipped with the second control valve 33 at each discharge bucket 26; Described second conveyor structure 11 comprises the second pipe 27 that is connected between each discharge bucket 26 and the first clean carbon granule storage column 4, be provided with the second screw rod 28 in the described second pipe 27, described the second screw rod 28 links to each other with the second driver 29, and described discharge bucket 26 axially evenly distributes along described second pipe 27.
The bottom that the bottom of the first clean carbon granule storage column 4 is provided with the 4th control valve 34 and the 3rd negative-pressure air fan 35, the second clean carbon granule storage columns 5 is provided with the 3rd control valve 30 and weighing instrument 31, is connected with the second negative-pressure air fan 32 at pulverized coal conveying pipe 12.Weighing instrument 31 can be realized the reasonable disposition of carbon granule and air inflow, the control combustion temperature.Usually, ignition temperature is controlled between 800 ℃-850 ℃.The first clean carbon granule storage column 4 and/or the second clean carbon granule storage column 5 are provided with temperature sensor, pressure sensor, CO concentration detector, oxygen content detector, breather valve and explosion vent apparatus, described temperature sensor, pressure sensor, CO concentration detector and oxygen content detector all link to each other with control circuit, are connected with alarm at control circuit.Owing to being provided with the impartial detection part of temperature sensor, pressure sensor, CO concentration detector and oxygen content detector, job security that can the Effective Raise system is in time got rid of potential safety hazard.
A kind of carbon granule clean combustion method comprises the steps: A, the ature of coal process is cleaned ash disposal, sulphur removal, and destructive distillation upgrading oven dry obtains low ash, low-sulfur coal, semicoke and coal tar and other materials; B, ash, the low-sulfur coal shape of claying into power be will hang down, low ash, the high cleaning carbon granule of low-sulfur fuel obtained; C, by wind powder turbulent flow atomizing and multistage air distribution, realize the low-temperature burning of clean carbon granule; D, the tail gas after will burning carry out dedusting recycling, dust emission concentration≤50mg/Nm
3
Particularly, the present invention utilizes the coal of the type such as brown coal, and resulting product after the coal destructive distillation upgrading as other purposes, is namely separated the hydrocarbon in the coal through the destructive distillation upgrading.Low ash, low-sulfur coal is delivered to first run coal bin 1, the first control valve 23 by run coal bin 1 below is delivered to the first conveying mechanism 9, the first conveying mechanism 9 will hang down ash, low-sulfur coal is delivered to clean carbon granule flour mill 2, to hang down ash by clean carbon granule flour mill 2, low-sulfur coal carries out grinding flour, negative pressure powder concentrator 19 above clean carbon granule flour mill 2 upwards is delivered to granularity≤300 purpose carbon granule sucking-offs and by conveyance conduit 10 and receives powder equipment 3, described receipts powder equipment 3 is delivered to the first clean carbon granule storage column 4 by the second conveyor structure 11 of being located at its below with carbon granule, the first clean carbon granule storage column 4 is carried by strength carbon granule is delivered to the second clean carbon granule storage column 5, the second clean carbon granule storage column 5 is weighed by weighing instrument 31 and is exported carbon granule and deliver to efficient carbon granule burner 6 by pneumatic transporting, the wind powder turbulent flow atomization structure 14 of described efficient carbon granule burner 6 carries out the turbulent flow atomizing with carbon granule by airduct 13 and wind powder turbulent flow atomization structure 14 and is made from the air-flow of secondary air channel 18 outputs by multistage oxygen enrichment air distribution device 15 axially distributing on the extended line of wind powder turbulent flow atomization structure 14 and participate in burning low-temperature burning Industrial Boiler 7, the thermal efficiency of described low-temperature burning Industrial Boiler 7 〉=90%, the tail gas after the burning discharges after being connected to cleaner 8 dedustings on the low-temperature burning Industrial Boiler 7.Cleaner 8 in the present embodiment adopts bag-type dust collector.Obviously, the present invention has realized the ladder comprehensive utilization with the coal of the types such as brown coal, turns waste into wealth.
Adopt wind powder turbulent flow atomization structure and multistage oxygen enrichment air distribution device on the efficient carbon granule burner design of the present invention, realize the low-temperature burning of clean carbon granule, thermal NO
XGreatly reduce, realize low-sulfur, low nitrogen burning, low-sulfur, low-nitrogen discharged purpose.Namely realized the desulfuration in furnace denitrogenation, in the combustion space in uniformity of temperature profile and rationally, further reduce the concentration of emission of nitride, S compound concentration of emission and N compound concentration of emission significantly reduce.Tail gas need not to increase desulfurization, denitrification equipment again, has saved equipment investment and operational and administrative expenses.The present invention is directed to clean carbon granule combustion characteristics, guarantee in time lighting of carbon granule, rapidly burning and burning has fully guaranteed the abundant burning time of clean carbon granule, effectively reduces approximately 3 percentage points of ash content carbons.The industrial boiler system heated face structure is reasonable in design, reduces to greatest extent various heat loss, embodies energy-conservation new concept, and the industrial boiler system thermal efficiency can reach more than 90%, the mandatory provisions of the ature of coal fuel industry steam generator system thermal efficiency far above 80%.Reasonably the duplex matter system structural design guarantees steam generator system safety, and the thermal source quality is higher.The advanced safety of automatic control system is complete, and automatic control function is perfect, complete, reliable, and operating system is directly perceived, simple and direct.Realize that combustion system is moved automatically and the automatic adjustment of load.Reliable anti-coking, Anti-slagging furnace hopper structural design.Reliable and stable safe and highly efficient operation, industrial boiler system load regulation range are comparatively broad, and load regulation range can reach 30-110%.Boiler tail arranges dust collecting system, dust emission concentration≤50mg/Nm
3GB requirement≤150mg/Nm
3, the simultaneously discharging of PM2.5 is also effectively reduced.
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more used run coal bin 1, clean carbon granule flour mill 2, receive powder equipment 3, the first clean carbon granule storage column 4, the second clean carbon granule storage column 5, efficient carbon granule burner 6, low-temperature burning Industrial Boiler 7, cleaner 8, the first conveying mechanism 9, conveyance conduit 10, second conveyor structure 11, pulverized coal conveying pipe 12, an airduct 13, wind powder turbulent flow atomization structure 14, multistage oxygen enrichment air distribution device 15, furnace hopper 16, baffle plate 17, secondary air channel 18, negative pressure powder concentrator 19, the first pipeline 20, the first screw rod 21, the first driver 22, the first control valve 23, receive powder storehouse 24, the first negative-pressure air fan 25, discharge bucket 26, second pipe 27, the second screw rod 28, the second driver 29, the 3rd control valve 30, weighing instrument 31, the second negative-pressure air fan 32, the second control valve 33, the 4th control valve 34, the 3rd negative-pressure air fan 35, passage 36 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1. carbon granule clean combustion industry steam generator system, it is characterized in that, native system comprises the run coal bin (1) that links to each other successively, clean carbon granule flour mill (2), receive powder equipment (3), the first clean carbon granule storage column (4), the second clean carbon granule storage column (5), efficient carbon granule burner (6), low-temperature burning Industrial Boiler (7) and cleaner (8), described run coal bin (1) links to each other with clean carbon granule flour mill (2) by the first conveying mechanism (9), described clean carbon granule flour mill (2) is by conveyance conduit (10) and receipts powder equipment (3), described receipts powder equipment (3) links to each other with the first clean carbon granule storage column (4) by second conveyor structure (11), the described first clean carbon granule storage column (4) links to each other with the second clean carbon granule storage column (5) by pulverized coal conveying pipe (12), the described second clean carbon granule storage column (5) links to each other with efficient carbon granule burner (6) by an airduct (13), described efficient carbon granule burner (6) is connected on the low-temperature burning Industrial Boiler (7), is connected with cleaner (8) on the described low-temperature burning Industrial Boiler (7).
2. carbon granule clean combustion according to claim 1 industry steam generator system, it is characterized in that, described efficient carbon granule burner (6) is provided with wind powder turbulent flow atomization structure (14) and multistage oxygen enrichment air distribution device (15), described wind powder turbulent flow atomization structure (14) links to each other with an airduct (13), described multistage oxygen enrichment air distribution device (15) is arranged on wind powder turbulent flow atomization structure (14) one ends, is arranged with furnace hopper (16) outside multistage oxygen enrichment air distribution device (15).
3. carbon granule clean combustion according to claim 2 industry steam generator system, it is characterized in that, described multistage oxygen enrichment air distribution device (15) comprises and is arranged on the some baffle plates (17) in the efficient carbon granule burner (6) and is connected at least one secondary air channel (18) on the efficient carbon granule burner (6); Described baffle plate (17) ringwise and each baffle plate (17) be concentric-ring pattern and distribute, described wind powder turbulent flow atomization structure (14) is arranged on the end that multistage oxygen enrichment air distribution device (15) is positioned at the baffle plate (17) at center, described secondary air channel (18) is connected with the passage (36) that is formed between each baffle plate (17), and each baffle plate (17) can make the air-flow of exporting from secondary air channel (18) axially distribute on the extended line of wind powder turbulent flow atomization structure (14) and participate in burning low-temperature burning Industrial Boiler (7).
4. according to claim 1 and 2 or 3 described carbon granule clean combustions industry steam generator systems, it is characterized in that, the top of described clean carbon granule flour mill (2) is provided with and can will sets the carbon granule sorting of granularity and from the negative pressure powder concentrator (19) of clean carbon granule flour mill (2) top sucking-off, described negative pressure powder concentrator (19) links to each other with the conveyance conduit that is tilted to upper setting (10).
5. according to claim 1 and 2 or 3 described carbon granule clean combustions industry steam generator systems, it is characterized in that, described the first conveying mechanism (9) comprises the first pipeline (20) that is connected between run coal bin (1) bottom and clean carbon granule flour mill (2) bottom, be provided with the first screw rod (21) in described the first pipeline (20), described the first screw rod (21) links to each other with the first driver (22); Be provided with the first control valve (23) between described run coal bin (1) bottom and the first pipeline (20).
6. according to claim 1 and 2 or 3 described carbon granule clean combustions industry steam generator systems, it is characterized in that, described receipts powder equipment (3) comprises to be received powder storehouse (24) and is connected to the first negative-pressure air fan (25) of receiving on the powder storehouse (24), be provided with some discharge buckets (26) in the bottom of receiving powder storehouse (24), be respectively equipped with the second control valve (33) at each discharge bucket (26); Described second conveyor structure (11) comprises the second pipe (27) that is connected between each discharge bucket (26) and the first clean carbon granule storage column (4), be provided with the second screw rod (28) in the described second pipe (27), described the second screw rod (28) links to each other with the second driver (29), and described discharge bucket (26) axially evenly distributes along described second pipe (27).
7. according to claim 1 and 2 or 3 described carbon granule clean combustions industry steam generator systems, it is characterized in that, the bottom of the described second clean carbon granule storage column (5) is provided with the 3rd control valve (30) and weighing instrument (31), is connected with the second negative-pressure air fan (32) at pulverized coal conveying pipe (12).
8. carbon granule clean combustion industry steam generator system according to claim 4 is characterized in that, the carbon granule of described setting granularity is granularity≤300 purpose carbon granules; The first clean carbon granule storage column (4) and/or the second clean carbon granule storage column (5) are provided with temperature sensor, pressure sensor, CO concentration detector, oxygen content detector, breather valve and explosion vent apparatus, described temperature sensor, pressure sensor, CO concentration detector and oxygen content detector all link to each other with control circuit, are connected with alarm at control circuit.
9. a carbon granule clean combustion method is characterized in that, this method comprises the steps:
A, with ature of coal through cleaning ash disposal, sulphur removal, destructive distillation upgrading oven dry obtains low ash, low-sulfur coal, semicoke and coal tar and other materials;
B, ash, the low-sulfur coal shape of claying into power be will hang down, low ash, the high cleaning carbon granule of low-sulfur fuel obtained;
C, by wind powder turbulent flow atomizing and multistage air distribution, realize the low-temperature burning of clean carbon granule;
D, the tail gas after will burning carry out dedusting recycling, dust emission concentration≤50mg/Nm
3
10. carbon granule clean combustion method according to claim 9, it is characterized in that, described low ash, low-sulfur coal is delivered to first run coal bin (1), the first control valve (23) by run coal bin (1) below is delivered to the first conveying mechanism (9), the first conveying mechanism (9) will hang down ash, low-sulfur coal is delivered to clean carbon granule flour mill (2), to hang down ash by clean carbon granule flour mill (2), low-sulfur coal carries out grinding flour, negative pressure powder concentrator (19) in clean carbon granule flour mill (2) top upwards is delivered to granularity≤300 purpose carbon granule sucking-offs and by conveyance conduit (10) receives powder equipment (3), described receipts powder equipment (3) is delivered to the first clean carbon granule storage column (4) by the second conveyor structure (11) of being located at its below with carbon granule, the first clean carbon granule storage column (4) is carried by strength carbon granule is delivered to the second clean carbon granule storage column (5), the second clean carbon granule storage column (5) is weighed by weighing instrument (31) and is exported carbon granule and deliver to efficient carbon granule burner (6) by pneumatic transporting, the wind powder turbulent flow atomization structure (14) of described efficient carbon granule burner (6) carries out carbon granule the turbulent flow atomizing and by multistage oxygen enrichment air distribution device (15) air-flow of exporting from secondary air channel (18) is axially being distributed and participation burning low-temperature burning Industrial Boiler (7) on the extended line of wind powder turbulent flow atomization structure (14) by an airduct (13) and wind powder turbulent flow atomization structure (14), the thermal efficiency of described low-temperature burning Industrial Boiler (7) 〉=90%, the tail gas after the burning discharges after being connected to cleaner (8) dedusting on the low-temperature burning Industrial Boiler (7).
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| CN201310238189.3A CN103353122B (en) | 2013-06-14 | 2013-06-14 | Industrial boiler system and method for clean combustion of carbon particles |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783020A (en) * | 2016-04-21 | 2016-07-20 | 成都华西堂环保科技有限公司 | Oxygen-rich low-nitrate combustion and denitration process of coal-fired boiler |
| CN105823073A (en) * | 2016-06-01 | 2016-08-03 | 广东家美陶瓷有限公司 | Spray tower pulverized coal firing method and device |
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2013
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783020A (en) * | 2016-04-21 | 2016-07-20 | 成都华西堂环保科技有限公司 | Oxygen-rich low-nitrate combustion and denitration process of coal-fired boiler |
| CN105783020B (en) * | 2016-04-21 | 2018-07-27 | 成都华西堂环保科技有限公司 | A kind of oxygen-enriched low nitrogen burning denitrating technique of coal-burning boiler |
| CN105823073A (en) * | 2016-06-01 | 2016-08-03 | 广东家美陶瓷有限公司 | Spray tower pulverized coal firing method and device |
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