CN103353122B - 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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- CN103353122B CN103353122B CN201310238189.3A CN201310238189A CN103353122B CN 103353122 B CN103353122 B CN 103353122B CN 201310238189 A CN201310238189 A CN 201310238189A CN 103353122 B CN103353122 B CN 103353122B
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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 46
- 239000002245 particle Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 14
- 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 145
- 238000000889 atomisation Methods 0.000 claims description 33
- 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
- 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
- 238000004140 cleaning Methods 0.000 claims description 3
- 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
- 238000004064 recycling Methods 0.000 claims description 3
- 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
- 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 10
- 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
- 238000000746 purification Methods 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
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000010298 pulverizing process 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
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000009291 froth flotation Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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 energy environment protection applied technical field, relate to 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 the productive life of people.Coal is the industrial important energy source of China, but it exploitation and utilize in process and but create serious pollution problem.How to utilize resource efficiently and decreasing pollution to greatest extent, become the urgent task of pendulum in face of us.During coal combustion except generation volume of smoke, also can form the harmful substances such as carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen oxide, organic compound, bioxin and flue dust in combustion.Coal fire discharged a large amount of harmful substances cause the deterioration of air quality and large-scale acid deposition, cause serious pollution to environment.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 is lowly the serious one of the main reasons of coal combustion pollution.For the pollutant produced in coal combustion, researched and developed various control technology at present, its main flow is clean coal technology.Because fire coal is sulfur dioxide to the major pollutants of air, so according to sulphur removal stage, purification before clean coal technology is divided into again burning, burning purify, combustion grand-mother after-purification technology, in addition the energy quality of coal conversion owing to improve coal, improve energy resource structure, also become an importance of clean coal technology, this cubic surface technology defines the main body of current pollution that caused by coal burning control technology.Before burning, purification techniques mainly carries out desulfurization, solid sulphuring treatment, to cut down the sulfur content polluting source to raw coal.Desulfurization process adopts coal preparation technique (i.e. coal-washing technique), by methods such as Physical (as Gravity Separation or froth flotation etc.), chemical method or microbial methods, contained ash content and pyritic sulfur in removing raw coal, block the source of sulphur and ash content, to control the pollutant produced in coal combustion.
For this reason, people have carried out long-term exploration, propose various solution.Such as, Chinese patent literature discloses a kind of small and medium-sized industrial coal powder boilers system [application number: 200510080337.9], it comprises 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, deliver coal pipe, 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 central air hose sheathed successively from inside to outside, primary air piping, inner second air pipe and outer second air pipe; Described boiler body device comprises: shell, fiery 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 features such as fume emission is up to standard, and it can be widely used in industrial and civil buildings as heating and heating equipment.
Although such scheme has decrease pollution that caused by coal burning to a certain extent, but still there is following technical problem: 1, higher to the quality requirement of coal, be difficult to the coal utilizing the types such as brown coal, and it is lower to the utilization rate of the coals such as brown coal, be difficult to make full use of coal, 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 coal burning process, the discharge of pollutant is still difficult to reach ideal situation.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of reasonable in design, structure is simple, 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 coal resource, high financial profit, the carbon granule clean combustion method of energy-conserving and environment-protective.
For achieving the above object, present invention employs following technical proposal: this carbon granule clean combustion industry steam generator system, it is characterized in that, native system comprises the run coal bin be connected successively, clean carbon granule flour mill, receive powder equipment, first clean carbon granule storage column, second clean carbon granule storage column, efficient carbon particle combustor, low-temperature burning Industrial Boiler and cleaner, described run coal bin is connected with clean carbon granule flour mill by the first conveying mechanism, described clean carbon granule flour mill is connected with receipts powder equipment by conveyance conduit, described receipts powder equipment is connected with the first clean carbon granule storage column by second conveyor structure, described first clean carbon granule storage column is connected with the second clean carbon granule storage column by pulverized coal conveying pipe, described second clean carbon granule storage column is connected with efficient carbon particle combustor by primary air piping, described efficient carbon particle combustor is connected on low-temperature burning Industrial Boiler, described low-temperature burning Industrial Boiler is connected with cleaner.
In above-mentioned carbon granule clean combustion industry steam generator system, described efficient carbon particle combustor is provided with wind powder turbulent flow atomization structure and multistage oxygen enrichment air distribution device, described wind powder turbulent flow atomization structure is connected with primary air piping, described multistage oxygen enrichment air distribution device is arranged on wind powder turbulent flow atomization structure one end, outside multistage oxygen enrichment air distribution device, be arranged with furnace hopper.
In above-mentioned carbon granule clean combustion industry steam generator system, described multistage oxygen enrichment air distribution device comprises the some baffle plates be arranged in efficient carbon particle combustor and at least one secondary air channel be connected on efficient carbon particle combustor; Described baffle plate ringwise and each baffle plate be concentric-ring pattern distribution, described wind powder turbulent flow atomization structure is arranged on one 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 be formed between each baffle plate, and each baffle plate can make the air-flow exported from secondary air channel axially distribute on the extended line of wind powder turbulent flow atomization structure and participate in burning in low-temperature burning Industrial Boiler.
In above-mentioned carbon granule clean combustion industry steam generator system, the top of described clean carbon granule flour mill be provided with can setting granularity carbon granule sorting and from the negative pressure powder concentrator of clean carbon granule flour mill top sucking-off, described negative pressure powder concentrator is connected with the conveyance conduit tilting upward setting.
In above-mentioned carbon granule clean combustion industry steam generator system, the first described conveying mechanism comprises the first pipeline be connected to bottom run coal bin and between clean carbon granule flour mill bottom, be provided with the first screw rod in the first described pipeline, the first described screw rod is connected with the first driver; The first control valve is provided with bottom described run coal bin and between the first pipeline.
In above-mentioned carbon granule clean combustion industry steam generator system, described receipts powder equipment comprises to be received powder storehouse and is connected to the first negative-pressure air fan received on powder storehouse, is provided with some discharge buckets, each discharge bucket is respectively equipped with the second control valve in the bottom of receiving powder storehouse; Described second conveyor structure comprises the second pipe be connected between each discharge bucket and the first clean carbon granule storage column, the second screw rod is provided with in described second pipe, the second described screw rod is connected with the second driver, and described discharge bucket is axially uniformly distributed 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, and pulverized coal conveying pipe is connected with the second negative-pressure air fan.
In above-mentioned carbon granule clean combustion industry steam generator system, the carbon granule of described setting granularity is granularity≤300 object carbon granules; 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 are all connected with control circuit with oxygen content detector, are connected with alarm on the control circuitry.
A kind of carbon granule clean combustion method, is characterized in that, this method comprises the steps: A, ature of coal is passed through cleaning ash disposal, sulphur removal, and destructive distillation upgrading is dried, and obtains low ash, low-sulfur coal, semicoke and coal tar and other materials; B, shape of low ash, low-sulfur coal being clayed into power, obtain low ash, the clean carbon granule fuel of low-sulfur height; C, by wind powder turbulent flow atomization and multistage air distribution, realize the low-temperature burning of clean carbon granule; D, by burning after tail gas 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 first delivered to run coal bin, the first conveying mechanism is delivered to by the first control valve below run coal bin, first conveying mechanism is by low ash, low-sulfur coal is delivered to clean carbon granule flour mill, by clean carbon granule flour mill by low ash, low-sulfur coal carries out grinding flour, negative pressure powder concentrator above clean carbon granule flour mill is by granularity≤300 object carbon granule sucking-off and be upwards delivered to receipts powder equipment by conveyance conduit, carbon granule is delivered to the first clean carbon granule storage column by the second conveyor structure be located at below it by described receipts powder equipment, carbon granule is delivered to the second clean carbon granule storage column by Geldart-D particle by the first clean carbon granule storage column, second clean carbon granule storage column is weighed by weighing instrument and is exported carbon granule and by Geldart-D particle to efficient carbon granule burner, carbon granule is carried out turbulent flow atomization by primary air piping and wind powder turbulent flow atomization structure and is made by multistage oxygen enrichment air distribution device the air-flow exported from secondary air channel axially distribute on the extended line of wind powder turbulent flow atomization structure and participate in burning in low-temperature burning Industrial Boiler by the wind powder turbulent flow atomization structure of described efficient carbon particle combustor, the thermal efficiency >=90% of described low-temperature burning Industrial Boiler, tail gas after burning discharges after being connected to the cleaner dedusting on 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, structure is simple, Coal Clean burning can be realized, ensure lighting in time of carbon granule, rapid burning and burning completely, flue gas, without the need to increasing desulfurization, denitrification equipment again, has saved equipment investment and operational and administrative expenses.2, rational combustion space, ensure that the Thorough combustion time of clean carbon granule, effectively reduces ash content carbon.3, the low-temperature burning of clean carbon granule is realized, thermal NO
xgreatly reduce, realize low-sulfur, low nitrogen burning, low-sulfur, low-nitrogen discharged object.4, furnace volume heat release rate reasonable in design, section thermic load, make uniformity of temperature profile in combustion space and rationally, reduce the concentration of emission of nitride further.5, coal resource can be fully utilized, high financial profit, particularly the utilization rate of the coals such as brown coal significantly be promoted, turn waste into wealth.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention.
Fig. 2 is partial structurtes schematic diagram provided by the invention.
In figure, run coal bin 1, clean carbon granule flour mill 2, receive powder equipment 3, first clean carbon granule storage column 4, second clean carbon granule storage column 5, efficient carbon particle combustor 6, low-temperature burning Industrial Boiler 7, cleaner 8, first conveying mechanism 9, conveyance conduit 10, second conveyor structure 11, pulverized coal conveying pipe 12, primary air piping 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, first pipeline 20, first screw rod 21, first driver 22, first control valve 23, receive powder storehouse 24, first negative-pressure air fan 25, discharge bucket 26, second pipe 27, second screw rod 28, second driver 29, 3rd control valve 30, weighing instrument 31, second negative-pressure air fan 32, second control valve 33, 4th control valve 34, 3rd negative-pressure air fan 35, passage 36.
Detailed description of the invention
As shown in Figure 1, this carbon granule clean combustion industry steam generator system comprises the run coal bin 1 be connected successively, clean carbon granule flour mill 2, receives the clean carbon granule storage column 5 of powder equipment the 3, first clean carbon granule storage column 4, second, efficient carbon particle combustor 6, low-temperature burning Industrial Boiler 7 and cleaner 8.Run coal bin 1 is connected with clean carbon granule flour mill 2 by the first conveying mechanism 9, described clean carbon granule flour mill 2 is connected with receipts powder equipment 3 by conveyance conduit 10, described receipts powder equipment 3 is connected with the first clean carbon granule storage column 4 by second conveyor structure 11, described first clean carbon granule storage column 4 is connected with the second clean carbon granule storage column 5 by pulverized coal conveying pipe 12, described second clean carbon granule storage column 5 is connected with efficient carbon particle combustor 6 by primary air piping 13, described efficient carbon particle combustor 6 is connected on low-temperature burning Industrial Boiler 7, described low-temperature burning Industrial Boiler 7 is connected with cleaner 8.
Efficient carbon particle combustor 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 is connected with primary air piping 13, described multistage oxygen enrichment air distribution device 15 is arranged on wind powder turbulent flow atomization structure 14 one end, outside multistage oxygen enrichment air distribution device 15, be arranged with furnace hopper 16.
As shown in Figure 2, multistage oxygen enrichment air distribution device 15 comprises the some baffle plates 17 be arranged in efficient carbon particle combustor 6 and at least one secondary air channel 18 be connected on efficient carbon particle combustor 6; Described baffle plate 17 ringwise and each baffle plate 17 distribution in concentric-ring pattern, described wind powder turbulent flow atomization structure 14 is arranged on one 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 be formed between each baffle plate 17, and each baffle plate 17 can make the air-flow exported from secondary air channel 18 axially distribute on the extended line of wind powder turbulent flow atomization structure 14 and participate in burning in low-temperature burning Industrial Boiler 7.In the present embodiment, the axial length of each baffle plate 17 increases gradually from inside to outside or to reduce gradually or equal, thus realizes reasonable distribution and the supply of combustion air, realizes low-temperature burning.Owing to adopting low-temperature burning, therefore the inwall of furnace hopper 16 can not produce a large amount of slagging scorification because of impurity be inevitably mingled with in carbon granule because of high-temp combustion melting.
The top of clean carbon granule flour mill 2 be provided with can setting granularity carbon granule sorting and from the negative pressure powder concentrator 19 of clean carbon granule flour mill 2 top sucking-off, negative pressure powder concentrator 19 is connected with the conveyance conduit 10 tilting upward setting.More particularly, the carbon granule setting granularity is granularity≤300 object carbon granules.Preferably, the carbon granule setting granularity is that granularity is less than 200 object carbon granules.First conveying mechanism 9 comprises the first pipeline 20 be connected to bottom run coal bin 1 and between clean carbon granule flour mill 2 bottom, is provided with the first screw rod 21 in the first described pipeline 20, and the first described screw rod 21 is connected with the first driver 22; The first control valve 23 is provided with bottom described run coal bin 1 and between the first pipeline 20.
Receive powder equipment 3 and comprise the first negative-pressure air fan 25 received powder storehouse 24 and be connected on receipts powder storehouse 24, be provided with some discharge buckets 26 in the bottom of receiving powder storehouse 24, each discharge bucket 26 is respectively equipped with the second control valve 33; Described second conveyor structure 11 comprises the second pipe 27 be connected between each discharge bucket 26 and the first clean carbon granule storage column 4, the second screw rod 28 is provided with in described second pipe 27, the second described screw rod 28 is connected with the second driver 29, and described discharge bucket 26 is axially uniformly distributed 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 clean carbon granule storage column 5 of the 3rd negative-pressure air fan 35, second is provided with the 3rd control valve 30 and weighing instrument 31, and pulverized coal conveying pipe 12 is connected with the second negative-pressure air fan 32.Weighing instrument 31 can realize the reasonable disposition of carbon granule and air inflow, control combustion temperature.Usually, ignition temperature controls between 800 DEG C-850 DEG C.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 are all connected with control circuit with oxygen content detector, are connected with alarm on the control circuitry.Owing to being provided with the impartial detection part of temperature sensor, pressure sensor, CO concentration detector and oxygen content detector, effectively can improving the job security of system, get rid of potential safety hazard in time.
A kind of carbon granule clean combustion method, comprise the steps: A, ature of coal is passed through cleaning ash disposal, sulphur removal, destructive distillation upgrading is dried, and obtains low ash, low-sulfur coal, semicoke and coal tar and other materials; B, shape of low ash, low-sulfur coal being clayed into power, obtain low ash, the clean carbon granule fuel of low-sulfur height; C, by wind powder turbulent flow atomization and multistage air distribution, realize the low-temperature burning of clean carbon granule; D, by burning after tail gas carry out dedusting recycling, dust emission concentration≤50mg/Nm
3.
Specifically, the present invention utilizes the coal of the types such as brown coal, using the product that obtains after coal destructive distillation upgrading as other purposes, is namely separated by the hydrocarbon in coal through destructive distillation upgrading.Low ash, low-sulfur coal is first delivered to run coal bin 1, the first conveying mechanism 9 is delivered to by the first control valve 23 below run coal bin 1, first conveying mechanism 9 is by low ash, low-sulfur coal is delivered to clean carbon granule flour mill 2, by clean carbon granule flour mill 2 by low ash, low-sulfur coal carries out grinding flour, negative pressure powder concentrator 19 above clean carbon granule flour mill 2 is upwards delivered to by granularity≤300 object carbon granule sucking-off and by conveyance conduit 10 and receives powder equipment 3, carbon granule is delivered to the first clean carbon granule storage column 4 by the second conveyor structure 11 be located at below it by described receipts powder equipment 3, carbon granule is delivered to the second clean carbon granule storage column 5 by Geldart-D particle by the first clean carbon granule storage column 4, second clean carbon granule storage column 5 is weighed by weighing instrument 31 and is exported carbon granule and by Geldart-D particle to efficient carbon granule burner 6, carbon granule is carried out turbulent flow atomization by primary air piping 13 and wind powder turbulent flow atomization structure 14 and is made by multistage oxygen enrichment air distribution device 15 air-flow exported from secondary air channel 18 axially distribute on the extended line of wind powder turbulent flow atomization structure 14 and participate in burning in low-temperature burning Industrial Boiler 7 by the wind powder turbulent flow atomization structure 14 of described efficient carbon particle combustor 6, the thermal efficiency >=90% of described low-temperature burning Industrial Boiler 7, tail gas after burning discharges after being connected to cleaner 8 dedusting on low-temperature burning Industrial Boiler 7.Cleaner 8 in the present embodiment adopts bag-type dust collector.Obviously, the coal of the types such as brown coal is achieved ladder comprehensive utilization by the present invention, turns waste into wealth.
Efficient carbon particle combustor design of the present invention is upper adopts wind powder turbulent flow atomization structure and multistage oxygen enrichment air distribution device, realizes the low-temperature burning of clean carbon granule, thermal NO
xgreatly reduce, realize low-sulfur, low nitrogen burning, low-sulfur, low-nitrogen discharged object.Namely achieve desulfuration in furnace denitrogenation, uniformity of temperature profile in combustion space and rationally, reduce the concentration of emission of nitride further, S compound concentration of emission and N compound concentration of emission significantly reduce.Tail gas, without the need to increasing desulfurization, denitrification equipment again, has saved equipment investment and operational and administrative expenses.The present invention is directed to clean carbon granule combustion characteristics, ensure lighting in time of carbon granule, burn rapidly and burn completely, ensure that the Thorough combustion time of clean carbon granule, effectively reduce ash content carbon about 3 percentage points.Industrial boiler system heated face structure is reasonable in design, reduces various heat loss to greatest extent, 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%.Rational duplex matter system structural design, ensure steam generator system safety, 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 combustion system and automatically run the automatic adjustment with load.Reliable anti-coking, Anti-slagging furnace hopper structural design.Reliable and stable safe and highly efficient operation, industrial boiler system load regulation range is comparatively broad, and load regulation range can reach 30-110%.Boiler tail arranges dust collecting system, dust emission concentration≤50mg/Nm
3standard≤150mg/Nm
3, the discharge of PM2.5 simultaneously is also effectively reduced.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ run coal bin 1 herein, clean carbon granule flour mill 2, receive powder equipment 3, first clean carbon granule storage column 4, second clean carbon granule storage column 5, efficient carbon particle combustor 6, low-temperature burning Industrial Boiler 7, cleaner 8, first conveying mechanism 9, conveyance conduit 10, second conveyor structure 11, pulverized coal conveying pipe 12, primary air piping 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, first pipeline 20, first screw rod 21, first driver 22, first control valve 23, receive powder storehouse 24, first negative-pressure air fan 25, discharge bucket 26, second pipe 27, second screw rod 28, second driver 29, 3rd control valve 30, weighing instrument 31, second negative-pressure air fan 32, second control valve 33, 4th control valve 34, 3rd negative-pressure air fan 35, term such as passage 36 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (9)
1. a carbon granule clean combustion industry steam generator system, it is characterized in that, native system comprises the run coal bin (1) be connected successively, clean carbon granule flour mill (2), receive powder equipment (3), first clean carbon granule storage column (4), second clean carbon granule storage column (5), efficient carbon particle combustor (6), low-temperature burning Industrial Boiler (7) and cleaner (8), described run coal bin (1) is connected with clean carbon granule flour mill (2) by the first conveying mechanism (9), described clean carbon granule flour mill (2) is connected with receipts powder equipment (3) by conveyance conduit (10), described receipts powder equipment (3) is connected with the first clean carbon granule storage column (4) by second conveyor structure (11), described first clean carbon granule storage column (4) is connected with the second clean carbon granule storage column (5) by pulverized coal conveying pipe (12), described second clean carbon granule storage column (5) is connected with efficient carbon particle combustor (6) by primary air piping (13), described efficient carbon particle combustor (6) is connected on low-temperature burning Industrial Boiler (7), described low-temperature burning Industrial Boiler (7) is connected with cleaner (8), described efficient carbon particle combustor (6) is provided with wind powder turbulent flow atomization structure (14) and multistage oxygen enrichment air distribution device (15), described multistage oxygen enrichment air distribution device (15) comprises the some baffle plates (17) be arranged in efficient carbon particle combustor (6) and at least one secondary air channel (18) be connected on efficient carbon particle combustor (6), described baffle plate (17) ringwise and each baffle plate (17) distribute in concentric-ring pattern, described wind powder turbulent flow atomization structure (14) is arranged on one 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) be formed between each baffle plate (17), and each baffle plate (17) can make the air-flow exported from secondary air channel (18) axially distribute on the extended line of wind powder turbulent flow atomization structure (14) and participate in burning in low-temperature burning Industrial Boiler (7).
2. carbon granule clean combustion industry steam generator system according to claim 1, it is characterized in that, described wind powder turbulent flow atomization structure (14) is connected with primary air piping (13), described multistage oxygen enrichment air distribution device (15) is arranged on wind powder turbulent flow atomization structure (14) one end, outside multistage oxygen enrichment air distribution device (15), be arranged with furnace hopper (16).
3. carbon granule clean combustion industry steam generator system according to claim 1 and 2, it is characterized in that, the top of described clean carbon granule flour mill (2) be provided with can setting granularity carbon granule sorting and from the negative pressure powder concentrator (19) of clean carbon granule flour mill (2) top sucking-off, described negative pressure powder concentrator (19) is connected with the conveyance conduit (10) tilting upward setting.
4. carbon granule clean combustion industry steam generator system according to claim 1 and 2, it is characterized in that, described the first conveying mechanism (9) comprises the first pipeline (20) be 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) is connected with the first driver (22); The first control valve (23) is provided with between described run coal bin (1) bottom and the first pipeline (20).
5. carbon granule clean combustion industry steam generator system according to claim 1 and 2, 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) received on powder storehouse (24), be provided with some discharge buckets (26) in the bottom of receiving powder storehouse (24), each discharge bucket (26) is respectively equipped with the second control valve (33); Described second conveyor structure (11) comprises the second pipe (27) be connected between each discharge bucket (26) and the first clean carbon granule storage column (4), the second screw rod (28) is provided with in described second pipe (27), described the second screw rod (28) is connected with the second driver (29), and described discharge bucket (26) is axially uniformly distributed along described second pipe (27).
6. carbon granule clean combustion industry steam generator system according to claim 1 and 2, 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), and pulverized coal conveying pipe (12) is connected with the second negative-pressure air fan (32).
7. carbon granule clean combustion industry steam generator system according to claim 3, it is characterized in that, the carbon granule of described setting granularity is granularity≤300 object carbon granules; 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 are all connected with control circuit with oxygen content detector, are connected with alarm on the control circuitry.
8. a carbon granule clean combustion method, is characterized in that, this method comprises the steps:
A, by ature of coal through cleaning ash disposal, sulphur removal, destructive distillation upgrading dry, obtain low ash, low-sulfur coal, semicoke and coal tar and other materials;
B, shape of low ash, low-sulfur coal being clayed into power, obtain low ash, the clean carbon granule fuel of low-sulfur height;
C, by wind powder turbulent flow atomization and multistage air distribution, realize the low-temperature burning of clean carbon granule;
D, by burning after tail gas carry out dedusting recycling, dust emission concentration≤50mg/Nm
3;
Described low ash, low-sulfur coal is first delivered to run coal bin (1), the first conveying mechanism (9) is delivered to by first control valve (23) of run coal bin (1) below, first conveying mechanism (9) is by low ash, low-sulfur coal is delivered to clean carbon granule flour mill (2), by clean carbon granule flour mill (2) by low ash, low-sulfur coal carries out grinding flour, negative pressure powder concentrator (19) in clean carbon granule flour mill (2) top is upwards delivered to by granularity≤300 object carbon granule sucking-off and by conveyance conduit (10) and receives powder equipment (3), carbon granule is delivered to the first clean carbon granule storage column (4) by the second conveyor structure (11) be located at below it by described receipts powder equipment (3), carbon granule is delivered to the second clean carbon granule storage column (5) by Geldart-D particle by the first clean carbon granule storage column (4), second clean carbon granule storage column (5) is weighed by weighing instrument (31) and is exported carbon granule and by Geldart-D particle to efficient carbon granule burner (6), carbon granule is carried out turbulent flow atomization by primary air piping (13) and wind powder turbulent flow atomization structure (14) and is made by multistage oxygen enrichment air distribution device (15) air-flow exported from secondary air channel (18) axially distribute on the extended line of wind powder turbulent flow atomization structure (14) and participate in burning in low-temperature burning Industrial Boiler (7) by wind powder turbulent flow atomization structure (14) of described efficient carbon particle combustor (6).
9. carbon granule clean combustion method according to claim 8, it is characterized in that, the thermal efficiency >=90% of described low-temperature burning Industrial Boiler (7), the tail gas after burning discharges after being connected to cleaner (8) dedusting on low-temperature burning Industrial Boiler (7).
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