CN107036439A - A kind of equipment of cement kiln head catalytic pyrolysis burning waste rubber plastics - Google Patents
A kind of equipment of cement kiln head catalytic pyrolysis burning waste rubber plastics Download PDFInfo
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- CN107036439A CN107036439A CN201710455570.3A CN201710455570A CN107036439A CN 107036439 A CN107036439 A CN 107036439A CN 201710455570 A CN201710455570 A CN 201710455570A CN 107036439 A CN107036439 A CN 107036439A
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- burner
- refuse derived
- derived fuel
- fuel
- kiln
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- 239000004033 plastic Substances 0.000 title claims abstract description 90
- 229920003023 plastic Polymers 0.000 title claims abstract description 90
- 239000002699 waste material Substances 0.000 title claims abstract description 69
- 239000004568 cement Substances 0.000 title claims abstract description 49
- 238000007233 catalytic pyrolysis Methods 0.000 title claims abstract description 37
- 229920001971 elastomer Polymers 0.000 title claims abstract description 34
- 239000003473 refuse derived fuel Substances 0.000 claims abstract description 57
- 239000000446 fuel Substances 0.000 claims abstract description 46
- 239000003245 coal Substances 0.000 claims abstract description 35
- 230000001590 oxidative effect Effects 0.000 claims abstract description 26
- 239000007800 oxidant agent Substances 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 39
- 230000001603 reducing effect Effects 0.000 claims description 25
- 238000013467 fragmentation Methods 0.000 claims description 17
- 238000006062 fragmentation reaction Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 239000000843 powder Substances 0.000 description 13
- 230000003197 catalytic effect Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 238000004523 catalytic cracking Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 238000006298 dechlorination reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 238000004227 thermal cracking Methods 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- -1 Lauxite Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910052789 astatine Inorganic materials 0.000 description 1
- RYXHOMYVWAEKHL-UHFFFAOYSA-N astatine atom Chemical compound [At] RYXHOMYVWAEKHL-UHFFFAOYSA-N 0.000 description 1
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- ZLQBNKOPBDZKDP-UHFFFAOYSA-L nickel(2+);diperchlorate Chemical compound [Ni+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O ZLQBNKOPBDZKDP-UHFFFAOYSA-L 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/12—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of plastics, e.g. rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/302—Treating pyrosolids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/101—Supplementary heating arrangements using auxiliary fuel solid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/28—Plastics or rubber like materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/28—Plastics or rubber like materials
- F23G2209/281—Tyres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50202—Waste pyrolysis, gasification or cracking in presence of catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/125—Fuels from renewable energy sources, e.g. waste or biomass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of equipment of cement kiln head catalytic pyrolysis burning waste rubber plastics, including coal burner, refuse derived fuel turbulent burner, lock feeding device, high pressure positive blower, meter dispenser, refuse derived fuel storehouse, conveyer I, homogenizer, meter feed pump, catalytic pyrolysis oxidant storage tank.This equipment is simple, and has the equipment of relative maturity alternative, and junked tire/waste plastics utilizes cost low as alternative fuel, good economy performance, is easy to promote；Pollution of the junked tire/waste plastics to environment is effectively reduced, and reduces the energy resource consumption and environmental pollution in junked tire/waste plastics recycling process, beneficial to environmental protection；Alternative fuel for cement production enterprise by the use of junked tire/waste plastics as kiln hood provides a kind of economic and practical new equipment, beneficial to cement production enterprise energy-saving and emission-reduction and cost efficiency.
Description
Technical field
The present invention relates to environmental protection equipment technical field, and in particular to a kind of dry cement production line cement kiln head catalytic pyrolysis
With the equipment of catalysis burning waste old plastics.
Background technology
Currently, the actual production capacity of China's cement is up to 4,500,000,000 tons, about 3 tons per capita, accounts for world's cement aggregated capacity ratio and exceedes 60%,
And manufacture of cement is generally acknowledged high energy consumption high pollution industry, it is to realize carbon emission reduction to substitute part fossil fuel using biomass fuel
Inexorable trend.It is known that, the core of cement kiln production grog refractory system is burned two fire, i.e., burned kiln hood one
Fire and dore furnace one are fire, and the quality of burning till of wherein clinker is more dependent upon kiln hood one fire, because the burning of normal silicate clinker
It is that the temperature of charge that clinkering zone rolls in 1450 DEG C, i.e. rotary kiln needs to reach 1450 DEG C into temperature, this requires kiln hood fuel
Burned flame temperature reaches more than 1700 DEG C, and needs oxidizing atmosphere could not produce reduction clinker.And it is current, it is useless utilizing
Old tire as in terms of kiln alternative fuel, be concentrated mainly on utilize junked tire substitute it is coal-fired for boiler generating, burnt lime,
Blast furnace converter ironmaking and cement kiln.Wherein cement kiln uses junked tire as alternative fuel, and its method can be summarized as three kinds：Side
Method one is to put into rotary kiln end or in the middle part of rotary kiln or decompose furnace bottom progressively after-flame, combustion by junked tire with overall
Burn that speed is slow, the thermal efficiency is low, produce strongly reducing atmosphere, clinker quality fluctuation is typically adopting with preheating and baking stove and preheating kiln
Used, typically fed by one of precalcining furnace bottom region special door as alternative fuel with overall junked tire.Method
Two are, junked tire processing is cut into pieces from coal powder in kiln head burner（Coal injection pipe）Lower section input rotary kiln in fall in clinker
Upper burning（Strong reduction effect can be produced to clinker）Or put into from the tapering input of kiln tail predecomposition furnace or from kiln tail smoke-box（Powder
In material）Burning, its burning velocity is partially slow, and ignition temperature is relatively relatively low, and kiln hood is also easy to produce strongly reducing atmosphere, influences clinker quality,
And reaching that same firing temperature needs more energy, the thermal efficiency is relatively low, it is impossible to produce the equivalent of coal dust calorific value identical with rubber
Effect, furthermore, objectively fall the easily formation reducing atmosphere that burnt on clinker and produce reduction clinker, bored from kiln tail smoke-box or dore furnace
Portion's input causes predecomposition furnace tapering to the easy skinning of smoke-box, to the influence on kiln system operating mode existed facts.Method three is to give up
It is tiny rubber granule or rubber powder that old tire, which is crushed, and coal is in using what the coal powder in kiln head burner with rotary kiln was set up in parallel
Another nozzle below powder burner, blows rubber granular material or rubber powder into rotary kiln, and this method can allow tiny rubber
Grain or rubber powder burning velocity are very fast, and ignition temperature is higher, alternative division header coal, but is first processed into rubber powder high energy consumption, two
Serious reducing atmosphere is then easily caused, reducing material is produced, sinter leaching quality is influenceed, because the rotary kiln of rotation is according to different scales
Its limited diameter（Diameter 3m to 5m）, the current radius also only 2.5m of the rotary kiln of 10,000 tons of clinkers of daily output, and known kiln
Head burner（Spray combustion pipe）The position that the center line or center for being mounted in kiln are expected partially, to strengthen caloradiance enhanced burning,
In kiln hood burner（Spray combustion pipe）A piece nozzle of lower section from a distance from the material rolled in rotary kiln closer to blowing into kiln
Tiny rubber granule or rubber powder, which has little time to heat up in the air to burn, just fall on the high-temperature material of rolling, in material corrective
Strong reducing material atmosphere is produced on material, and efficiency of combustion is still relatively low,.In fact, current, even Poland, Ukraine etc. are a large amount of sharp
With the cement plant as manufacture of cement alternative fuel such as junked tire, junked tire plastics etc. can be accomplished significantly despite the use of
Fire coal is substituted, but due to art methods and equipment problem, it is burnt till clinker and is actually greater than using the heat consumption of alternative fuel
Using the heat consumption of coal dust, identical calorific value can not produce equivalent effect, and the one side thermal efficiency is relatively low to cause waste, the opposing party
Face, will substitute certain coal dust or fuel oil because need to more consume junked tire amount, frequently result in the zinc oxide brought into it is excessive and
Influence setting time and the intensity of clinker, and do not find solution that maximum replacement amount can only be determined with experience and lessons.
And in waste plastics（Including thermohardening plastics such as phenolic resin, Lauxite, epoxy resin, furane resins, unsaturation
Alkyd resin etc. and thermoplastic materials such as PE, PP, PVC, PS, PET, ABS, PC etc., wherein PVC occupies larger proportion）Replaced as kiln
In terms of Replacing fuel, though research both domestic and external is quite varied with applying, it can summarize and be summarised as following four classes technical method.
First kind method, is that will sort the waste plastics for rejecting plastic containing chlorine or use the waste plastics of thermal cracking dechlorination to be ground into
Plastic powders（Typically it is crushed to below 1mm）Spray into and directly burnt in kiln.This method is at home and abroad most widely used, such as
《Chinese building material》（7th phase in 2001）《Cement is burnt till with waste plastics Replacing fuel》And《Sichuan cement》（5th phase in 2001）《Cement
Burn till the state-of-the-art technology using waste plastics》Three river Onoda Cement Co., Ltds are described to give birth to by fuel turnaround kiln cement baking of heavy oil
The technological development situation of waste plastics is burnt in examination in producing line, utilizes high heating value>7900kcal/kg waste plastics, is first taken off waste plastics
Chlorine processing（It is general to reclaim hydrochloric acid technique using 300 DEG C of normal heating cracking dechlorinations）, waste plastics chlorinity is down to 0.6%, then
Below 1mm is crushed to, while oil firing, waste plastics below spray bar burner is special to be blown into pipe burner to be arranged at
It is blown into from kiln hood in rotary kiln, is the reducing atmosphere for mitigating kiln hood to greatest extent, its molding powder for filtering out more than 1mm then sprays
Enter kiln tail smoke-box and dore furnace lower end（That is dore furnace tapering）Interior burning, its main fuel oil can reduce 40%.But this method one is consumption
Can, two be that the dechlorination process complexity of waste plastics is also easy to produce secondary pollution, and three be that substantial amounts of plasticiser is also in dechlorination treatment of waste plastics
It can volatilize, waste the energy in waste plastics, and improve and utilize cost, four must be milled to molding powder below particle diameter 1mm
Particle could not produce strongly reducing atmosphere and reduction clinker, and grinding pow consumption is too high, and no subsidy general enterprises are difficult to bear.
Equations of The Second Kind method, is that broken be sent directly into high-temperature cement rotary kiln of waste plastics not chloride after sorting is burnt.
Such as《Chinese Resources are comprehensively utilized》（2002/10）《Make the technology of cement kiln fuel with waste plastics》, describe a kind of use and be free of
Halogen（Fluorine, chlorine, bromine, iodine, astatine）Thermoplastic materials waste plastics be used as the method for cement kiln fuel, wait the useless of halogen element by chloride
Separating plastic removes, and block plastic crushing to below particle diameter 20mm, sheet are crushed to below 30mm, using being juxtaposed on revolution
Another nozzle below the coal powder in kiln head burner of kiln, the block waste plastics of crushing, such as day Bender mountain are blowed into rotary kiln
Cement plant（Former year consumes about 300,000 tons of coal）3 cement producing lines utilized fired without the waste plastics of halogen element with this technology always
Materialization technology, its 3 cement producing lines are 7500kcal/kg using mean calorie and the most big year without halogen waste plastics consumes
Waste plastics amount is up to 100,000 tons.But this method is because producing strongly reducing atmosphere influence clinker quality in kiln, also because strong reducing property gas
The further raising that has a strong impact on problem and hamper alternative fuel amount of the atmosphere to kiln system operating mode, and its burning velocity is still inclined
The low, thermal efficiency is relatively low, on the other hand, must still remove substantial amounts of plastic containing chlorine sorting in waste plastics.In fact, current industry
From the angle of the useless cost of profit, the categorised collection for unanimously thinking waste plastics is to reduce the key that waste plastics recycling is utilized, if will contain
The classification of chlorine waste plastics is reclaimed, and most of waste plastics can simplify dechlorination process, the cost of regeneration is greatly reduced.
3rd class method is after waste plastics is crushed or waste plastics crush after mixed with other materials and be pressed into fuel slug
Afterwards, with burning in compressing fuel slug feeding kiln.But type fuel slug is made in this method, and objectively energy consumption is higher, have two
Burning velocity slow, secondary pollution problem partially is difficult to handle mostly during secondary pollution, and use, is used for cement kiln because of strong reduction
It is limited on operating mode influence problematic amount, and its burning velocity is slow, the thermal efficiency is low.
4th class method, is to be mixed for kiln burning using waste plastics as nugget fuel and coal, i.e., first leads to waste plastics
Cross electric heating film charging melting and fusing forms so-called compression plastics, then the compression plastics of melting are cut into nugget, then,
Section plastics nugget and coal are mixed for kiln burning.But this method is higher outer except processing more complicated, energy consumption, and its processing and
Release problem is burned still to require study and solve, if cement kiln is used for because strong reduction influences problematic amount limited operating mode, and
Its burning velocity is slow, the thermal efficiency is low.
On the other hand, it is well known that the research and development application of the thermal cracking and catalytic pyrolysis in waste plastic and junked tire
Technology has been widely used, specialist equipment to the thermal cracking and catalytic pyrolysis of waste plastic and junked tire because consume energy and caused by it is serious
Secondary pollution, but thermal cracking especially high-temperature catalytic cracking have efficiently quickly advantage, pyrolysis product also have it is fabulous
Combustibility.Secondly, the known catalysis burning especially more conventional combustion technology of high-temperature S removal combustion technology has pole
Big advantage and tool increase significantly the thermal efficiency the characteristics of, but be applied in junked tire/waste plastics etc. as alternative fuel
In terms of manufacture of cement, so far there are no it is any by high-temperature catalytic cracking and catalytic oxidation combustion directly in conjunction with grinding for cement kiln head
Study carefully and put into practice.
It is well known that manufacture of cement is highly energy-consuming high pollution enterprise, current manufacture of cement needs to consume substantial amounts of fire coal,
The fire coal needed for manufacture of cement is solved with alternative fuel, is always the important class of industry scientific worker concern and research
Topic.How the efficient utilization of alternative fuel especially cement kiln head alternative fuel in manufacture of cement is efficiently resolved
Problem, and maximally utilise junked tire/waste plastics resource, the power consumption of polymer processing that utilizes of reduction junked tire/waste plastics and
Cost, in the urgent need to a kind of brand-new technical method and change system are allowed to effectively can efficiently substitute dry cement production line revolution
Kiln kiln hood one is fiery division header coal, without influenceing kiln system production status and clinker quality.
The content of the invention
The problem of to solve in background technology, present invention offer one kind, which can be cooperateed with, utilizes high-temperature catalytic cracking and high-temperature catalytic
Oxidizing fire technical advantage, is easy to low cost to be used by the use of junked tire/waste plastics as dry cement production line rotary kiln end
Alternative fuel, kiln system production capacity and clinker quality, and non-secondary pollution are not influenceed, can realize that junked tire/waste plastics fragmentation is mixed
The equipment of the cement kiln head catalytic pyrolysis burning waste rubber plastics of compound catalytic pyrolysis and catalytic oxidation combustion.
The technical solution adopted by the present invention is：
A kind of equipment of cement kiln head catalytic pyrolysis burning waste rubber plastics, including the rotation of coal burner, refuse derived fuel
Stream burner, lock feeding device, high pressure positive blower, meter dispenser, refuse derived fuel storehouse, conveyer I, homogenizer, meter feed pump, urge
Change pyrolysis oxidization agent storage tank, outlet of the meter feed pump by different pipelines and catalytic pyrolysis oxidant storage tank, homogenizer
Atomizing spray feed tube be connected, the delivery end and feeding end of the conveyer I charging aperture respectively with refuse derived fuel storehouse,
The discharge port of homogenizer is connected, and the bottom discharge mouthful in the refuse derived fuel storehouse is connected with meter ramming material device, it is described count ramming material device and
Lock feeding device is connected, and the lock feeding device is connected with the charging aperture of refuse derived fuel turbulent burner, the high-pressure blast
Machine is connected by airduct with the air inlet of refuse derived fuel turbulent burner, the refuse derived fuel turbulent burner and coal dust
Burner be arranged in parallel, and refuse derived fuel turbulent burner is located at the top of coal burner, refuse derived fuel swirl flow combustion
The swirl nozzle of device is stretched into the kilneye of rotary kiln end or is placed in outside kilneye, the swirl nozzle of refuse derived fuel turbulent burner
It can be moved in the kilneye of rotary kiln end or outside kilneye.The port of export of coal burner stretch into the kilneye of rotary kiln end or
It is placed in outside kilneye.
Further, rubber/plastic fragmentation discarded object warehouse, reducing mechanism, conveyer II, conveyer III, dispensing are additionally provided with
Charging gear, the delivery end of the conveyer III is connected with the charging aperture of reducing mechanism, the delivery end of the conveyer II and enters
Charging aperture, the discharging opening of reducing mechanism of material end respectively with rubber/plastic fragmentation discarded object warehouse are connected, the dispensing feed dress
Bottom discharge openings, the charging aperture phase of homogenizer of the delivery end and feeding end put respectively with rubber/plastic fragmentation discarded object warehouse
Even.
The present invention catalytic pyrolysis oxidant that feed pump is extracted in catalytic pyrolysis oxidant storage tank in terms of is sprayed to homogenizer
On interior size-reduced waste plastics/junked tire material, the waste plastics of fragmentation/junked tire matter homogenizing is modified by homogeneous mixing
Be processed as can under the high temperature conditions efficient catalytic cracking and catalytic oxidation combustion modified abandoned thing fuel, modified abandoned thing fuel
Sent into through conveyer I in refuse derived fuel storehouse, modified abandoned meter of the thing fuel through orlop portion discharging opening in refuse derived fuel storehouse
Ramming material device continuous metering feed, it is continuously introduced into refuse derived fuel turbulent burner through lock feeding device, is roused through high pressure positive blower again
Entering the push of the high-pressure blast in refuse derived fuel turbulent burner, rotation is poured in rotary kiln end at a high speed, and is fired by means of following coal dust
The effect for the dilatancy flame flow that the high speed pulverized coal flow burning that burner is produced is produced makes refuse derived fuel be suspended in rotary kiln end
Interior headroom space, prevents refuse derived fuel is fallen directly into from producing strong reducing action in kiln in material, utilizes in rotary kiln 1300
More than DEG C（1600-2000℃）Backing temperature field, realize that modified abandoned thing fuel is urged in the suspension high effect in rotary kiln end
Change cracking and efficiently catalyzing and oxidizing burning, modified abandoned thing fuel is in suspension high effect catalytic pyrolysis in rotary kiln end and efficiently urges
The heat for changing oxidizing fire generation directly feeds the calcining of cement material in rotary kiln.
The present invention be directed to junked tire/waste plastics high polymer material composition feature and combustion characteristics, take into consideration rubber/
The condition of high-temperature catalytic cracking condition and the high-temperature S removal burning of plastics high polymerization material, collaboration is split using high-temperature catalytic
The advantage that solution and high-temperature S removal burn, the material that can effectively facilitate high-temperature catalytic cracking and high-temperature S removal is directly inhaled
Invest on junked tire/waste plastics fragmentation block material of fragmentation, processing is modified to junked tire/waste plastics sliver.Pin
Rubber plastic is easily heated and produces the defect of bond vitrified, is rotated at a high speed with refuse derived fuel turbulent burner high pressure cyclone thrust
The upper space sent into rotary kiln end, is burnt using the high speed pulverized coal flow for being set in parallel in following coal burner generation
The effect of the dilatancy flame flow of generation makes discarded object be suspended in headroom space in rotary kiln end, prevents refuse derived fuel straight
Connect to fall into and produce strong reducing action in kiln in material, it is real using the backing temperature field that 1600-2000 DEG C is up in rotary kiln end
Existing modified abandoned thing fuel is in the suspension high effect catalytic pyrolysis in rotary kiln end（It is quick-fried project substantial amounts of ethene, propylene, butylene,
The flammable gas such as isobutene, methane, alkane, aromatic hydrocarbons）With efficiently catalyzing and oxidizing burning, junked tire/waste plastics is resolved broken
The high-temperature catalytic rapid cleavage and high-temperature catalytic Quick Oxidation combustion problem of block material, make it high thermal efficiency is largely used as water
Stall head alternative fuel.
The remarkable result of the present invention：
1）Equipment is simple, and has the equipment of relative maturity alternative, and junked tire/waste plastics is utilized into as alternative fuel
This is low, and kiln system operating mode is not influenceed, clinker loss is not resulted in, good economy performance is easy to promote.
2）Pollution of the junked tire/waste plastics to environment is effectively reduced, and reduces junked tire/waste plastics and is recycled
Energy resource consumption and environmental pollution in process, beneficial to environmental protection.
3）Alternative fuel for cement production enterprise by the use of junked tire/waste plastics as kiln hood provides a kind of economical and real
New equipment, beneficial to cement production enterprise energy-saving and emission-reduction and cost efficiency.
Brief description of the drawings
Fig. 1 is that the equipment configuration of the burning waste rubber plastics of cement kiln head catalytic pyrolysis shown in the embodiment of the present invention 1 shows
It is intended to；
Fig. 2 is the equipment configuration schematic diagram of the burning waste rubber plastics of cement kiln head catalytic pyrolysis shown in the embodiment of the present invention 2.
Embodiment
Below in conjunction with drawings and examples, the invention will be further described.
Embodiment 1：
The equipment of reference picture 1, a kind of cement kiln head catalytic pyrolysis burning waste rubber or plastics, including it is coal burner 2, useless
Gurry fuel swirl burner 3, lock feeding device 4, high pressure positive blower 5, meter dispenser 6, refuse derived fuel storehouse 7, conveyer I 8,
Matter machine 9, meter feed pump 10 and catalytic pyrolysis oxidant storage tank 11, the meter feed pump 10 pass through different pipeline and catalytic pyrolysis
The liquid outlet of oxidant storage tank 11, the atomizing spray feed tube of homogenizer 9 are connected, the delivery end and pan feeding of the conveyer I 8
Charging aperture, the discharge port of homogenizer 9 of end respectively with modified abandoned thing Bunker 7 are connected, the bottom in the refuse derived fuel storehouse 7
Discharging opening is connected with meter ramming material device 6, and the meter ramming material device 6 is connected with lock feeding device 4, the lock feeding device 4 and discarded object
The charging aperture of fuel swirl burner 3 is connected, and the high pressure positive blower 5 passes through airduct and refuse derived fuel turbulent burner 3
Air inlet is connected, and the refuse derived fuel turbulent burner 3 be arranged in parallel with coal burner, and refuse derived fuel eddy flow fires
Burner 3 is located at the top of coal burner 2, and the swirl nozzle of refuse derived fuel turbulent burner 3 stretches into the kiln of the kiln hood of rotary kiln 1
Intraoral or be placed in outside kilneye, the swirl nozzle of refuse derived fuel turbulent burner 3 can be in the kilneye of the kiln hood of rotary kiln 1 or kilneye
Outer movement.The port of export of coal burner 2 is stretched into the kilneye of the kiln hood of rotary kiln 1 or is placed in outside kilneye.
Catalytic pyrolysis oxidant is housed in catalytic pyrolysis oxidant storage tank 11.The catalytic pyrolysis oxidant is existing catalysis
Agent, such as commercially available ferrate-lithium, ammonium dichromate, ammonium metavanadate, nickelous perchlorate, copper nitrate, the compound of cerous nitrate and Hunan
Save ZC series catalyst pyrolysis oxidization agent of little Yin Wuji environmental energy Science and Technology Development Co., Ltd. etc..
Homogenizer 9 is existing equipment, and homogenizer 9 is built with the waste plastics crushed/junked tire material.Lock feeding device
4 be existing equipment, the continuous distributing for material.Refuse derived fuel turbulent burner 3 is existing equipment.
During work, the catalytic pyrolysis oxidant that meter feed pump 10 is extracted in catalytic pyrolysis oxidant storage tank 11 is sprayed to homogeneous
In machine 9 on size-reduced waste plastics/junked tire material, homogeneous mixing changes the waste plastics of fragmentation/junked tire matter homogenizing
Property for can efficient catalytic cracking and catalytic oxidation combustion under the high temperature conditions modified abandoned thing fuel, modified abandoned thing fuel warp
In the feeding refuse derived fuel of conveyer I 8 storehouse 7, modified abandoned meter of the thing fuel through orlop portion discharging opening in refuse derived fuel storehouse 7
The continuous metering of ramming material device 6 is fed, again through in the continuous cloth of lock feeding device 4 feeding refuse derived fuel turbulent burner 3, through high-pressure blast
The high-pressure blast that machine 5 is blasted in refuse derived fuel turbulent burner 3 pushes rotation at a high speed and poured in the kiln hood of rotary kiln 1, and under
The effect for the dilatancy flame flow that the high speed pulverized coal flow burning that the coal burner 2 in face is produced is produced is suspended in refuse derived fuel
Headroom space in the kiln hood of rotary kiln 1, prevents refuse derived fuel is fallen directly into from producing strong reducing action in kiln in material, using return
More than 1300 DEG C in the kiln hood of rotary kiln 1（1600-2000℃）Backing temperature field, realize modified abandoned thing fuel in the kiln of rotary kiln 1
Suspension high effect catalytic pyrolysis and efficiently catalyzing and oxidizing burning in head, modified abandoned thing fuel is in the suspension in the kiln hood of rotary kiln 1
Efficient catalytic is cracked and efficiently catalyzing and oxidizing burns, and the heat produced directly feeds the calcining of cement material in rotary kiln end.
Embodiment 2：
The equipment of reference picture 2, a kind of cement kiln head catalytic pyrolysis burning waste rubber or plastics, including it is coal burner 2, useless
Gurry fuel swirl burner 3, lock feeding device 4, high pressure positive blower 5, meter dispenser 6, refuse derived fuel storehouse 7, conveyer I 8,
Matter machine 9, meter feed pump 10, catalytic pyrolysis oxidant storage tank 11, aggregate feeder units 12, plastics/rubber fragmentation discarded object warehouse
13rd, conveyer II 14, reducing mechanism 15 and conveyer III 16, the delivery end of the conveyer III 16 and the charging of reducing mechanism 15
Mouthful it is connected, the delivery end and feeding end of the conveyer II 14 charging aperture respectively with plastics/rubber fragmentation discarded object warehouse 13,
The discharging opening of reducing mechanism 15 is connected, the bottom of the aggregate feeder units 12 respectively with plastics/rubber fragmentation discarded object warehouse 13
Portion's discharge port, the charging aperture of homogenizer 9 are connected, and the meter feed pump 10 passes through different pipelines and catalytic pyrolysis oxidant storage tank
11 liquid outlet, the atomizing spray feed tube of homogenizer 9 are connected, and the delivery end and feeding end of the conveyer I 8 are respectively with changing
Property the charging aperture in refuse derived fuel storehouse 7, the discharge port of homogenizer 9 be connected, bottom discharge mouthful and the meter in the refuse derived fuel storehouse 7
Ramming material device 6 is connected, and the meter ramming material device 6 is connected with lock feeding device 4, and the lock feeding device 4 fires with refuse derived fuel eddy flow
The charging aperture of burner 3 is connected, and the high pressure positive blower 5 is connected by airduct with the air inlet of refuse derived fuel turbulent burner 3
Logical, the refuse derived fuel turbulent burner 3 be arranged in parallel with coal burner, and refuse derived fuel turbulent burner 3 is located at
The top of coal burner, the swirl nozzle of refuse derived fuel turbulent burner 3 is stretched into the kilneye of the kiln hood of rotary kiln 1 or is placed in
Outside kilneye, the swirl nozzle of refuse derived fuel turbulent burner 3 can be moved in the kilneye of rotary kiln end or outside kilneye.Coal dust
The port of export of burner 2 is stretched into the kilneye of the kiln hood of rotary kiln 1 or is placed in outside kilneye.
Reducing mechanism is existing equipment.
During work, waste plastics/junked tire is sent into reducing mechanism 15 by conveyer III 16 and crushed as 1~50mm of size
Material, material after crushing sends into plastics/rubber fragmentation discarded object warehouse 13 with conveyer II 14, through plastics/rubber fragmentation
Homogenizer 9, while homogeneous is mixed, the feed pump in terms of are sent into after the dispensing of aggregate feeder units 12 of the bottom of discarded object warehouse 13
Catalytic pyrolysis oxidant in 10 extraction catalytic pyrolysis oxidant storage tanks 11 is sprayed on the material in homogenizer 9, homogeneous mixing,
The waste plastics of fragmentation/junked tire matter homogenizing is modified as efficient catalytic to crack and catalytic oxidation combustion under the high temperature conditions
Modified abandoned thing fuel, modified abandoned thing fuel is sent into refuse derived fuel storehouse 7 through conveyer I 8, in refuse derived fuel storehouse 7
Modified abandoned thing fuel through orlop portion discharging opening the continuous metering of meter ramming material device 6 feed, again through the continuous distributing of lock feeding device 4
Enter in refuse derived fuel turbulent burner 3, the high-pressure blast blasted through high pressure positive blower 5 in refuse derived fuel turbulent burner 3 is pushed
Rotation is poured in rotary kiln end 1 at a high speed, and the high speed pulverized coal flow produced by following coal burner burn produce it is swollen
The effect of swollen property flame flow makes refuse derived fuel be suspended in headroom space in the kiln hood of rotary kiln 1, prevents refuse derived fuel direct
Fall into and produce strong reducing action in kiln in material, utilize more than 1300 DEG C in the kiln hood of rotary kiln 1（1600-2000℃）Backing temperature
Field is spent, realizes that modified abandoned thing fuel burns in the suspension high effect catalytic pyrolysis in the kiln hood of rotary kiln 1 and efficiently catalyzing and oxidizing, changes
Property refuse derived fuel in the suspension high effect catalytic pyrolysis in the kiln hood of rotary kiln 1 and efficiently catalyzing and oxidizing burning produce heat it is direct
Supply the calcining of cement material in rotary kiln.
Claims (2)
- The equipment of waste rubber plastics 1. a kind of cement kiln head catalytic pyrolysis burns, it is characterised in that including coal burner, Refuse derived fuel turbulent burner, lock feeding device, high pressure positive blower, meter dispenser, refuse derived fuel storehouse, conveyer I, homogeneous Machine, meter feed pump, catalytic pyrolysis oxidant storage tank, the meter feed pump pass through different pipelines and catalytic pyrolysis oxidant storage tank Outlet, the atomizing spray feed tube of homogenizer be connected, the delivery end and feeding end of the conveyer I fire with discarded object respectively The charging aperture of feed bin, the discharge port of homogenizer are connected, and the bottom discharge mouthful in the refuse derived fuel storehouse is connected with meter ramming material device, institute State meter ramming material device with lock feeding device to be connected, the lock feeding device is connected with the charging aperture of refuse derived fuel turbulent burner Logical, the high pressure positive blower is connected by airduct with the air inlet of refuse derived fuel turbulent burner, the refuse derived fuel rotation Stream burner be arranged in parallel with coal burner, and refuse derived fuel turbulent burner is located at the top of coal burner, discards The swirl nozzle of thing fuel swirl burner is stretched into the kilneye of rotary kiln end or is placed in outside kilneye, the outlet of coal burner End is stretched into the kilneye of rotary kiln end or is placed in outside kilneye.
- The equipment of waste rubber plastics 2. cement kiln head catalytic pyrolysis according to claim 1 burns, it is characterised in that Rubber/plastic fragmentation discarded object warehouse, reducing mechanism, conveyer II, conveyer III, aggregate feeder units are additionally provided with, it is described defeated Send the delivery end of machine III to be connected with the charging aperture of reducing mechanism, the delivery end and feeding end of the conveyer II respectively with rubber/ The charging aperture of plastics fragmentation discarded object warehouse, the discharging opening of reducing mechanism are connected, and the delivery end of the aggregate feeder units and enter Material end bottom discharge openings respectively with rubber/plastic fragmentation discarded object warehouse, the charging aperture of homogenizer are connected.
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| CN201710455570.3A CN107036439A (en) | 2017-06-16 | 2017-06-16 | A kind of equipment of cement kiln head catalytic pyrolysis burning waste rubber plastics |
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| CN201710455570.3A CN107036439A (en) | 2017-06-16 | 2017-06-16 | A kind of equipment of cement kiln head catalytic pyrolysis burning waste rubber plastics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107435941A (en) * | 2017-09-11 | 2017-12-05 | 北京金隅琉水环保科技有限公司 | The method and processing system of junked tire replacing partial cement kiln fuel |
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| US6287379B1 (en) * | 1999-06-10 | 2001-09-11 | Jack Khalifeh | Apparatus and method for disposing rubber waste material during the manufacturing of products which are heated in a rotary kiln |
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Application publication date: 20170811 |