CN101693839B - Combustion heat supplying technology of biomass pyrolysis furnace - Google Patents
Combustion heat supplying technology of biomass pyrolysis furnace Download PDFInfo
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- CN101693839B CN101693839B CN2009102104343A CN200910210434A CN101693839B CN 101693839 B CN101693839 B CN 101693839B CN 2009102104343 A CN2009102104343 A CN 2009102104343A CN 200910210434 A CN200910210434 A CN 200910210434A CN 101693839 B CN101693839 B CN 101693839B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 110
- 239000002028 Biomass Substances 0.000 title claims abstract description 80
- 238000005516 engineering process Methods 0.000 title claims abstract description 50
- 239000000446 fuel Substances 0.000 claims abstract description 26
- 239000011343 solid material Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- 239000001301 oxygen Substances 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
- 239000003570 air Substances 0.000 claims description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 11
- 238000010304 firing Methods 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011819 refractory material Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 239000000295 fuel oil Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 15
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- 238000004519 manufacturing process Methods 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
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- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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- 229930195733 hydrocarbon Natural products 0.000 description 1
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The invention discloses a combustion heat supplying technology of a biomass pyrolysis furnace, which relates to the technical field of biomass thermochemistry. The combustion heat supplying technology includes that pluralities of combustor groups are dispersedly distributed on the upper portion of the pyrolysis furnace along an axial direction, each combustor group is composed of pluralities of small combustor nozzles, space between adjacent small combustor nozzles is 5d-14d, fuels and oxidizers respectively enter the pyrolysis furnace through an independent channel of each small combustor nozzle and conduct non-premixed combustion inside the pyrolysis furnace; the thickness of the channel wall of each small combustor nozzle is 1-3 millimeters; a stable combustion plate is arranged at the position of 0.5d-3.0d of a small combustor nozzle outlet corresponding to each combustor group, the stable combustion plate with a hole diameter ranging from 1.2d to 3.0d is made of heat resistant steel plates or ceramic plates; d is the outer diameter of each small combustor nozzle; each small combustor nozzle and each stable combustion plate are not contacted with solid materials inside the pyrolysis furnace and a stirring rod arranged inside the pyrolysis furnace; the highest temperature of combustion flames inside the pyrolysis furnace is below 1600 DEG C; the combustion heat supplying technology is applied to the pyrolysis furnace for biomass pyrolysis treatment.
Description
Technical field
The combustion heat supplying technology of biomass pyrolysis furnace of the present invention relates to the derived energy chemical technical field; Be particularly related to the thermochemical techniques field of biomass; Relate in particular to the technical field of biomass being carried out middle temperature fast pyrolysis processes for the entrained flow gasification of realizing biomass; Be specifically related to the technical field of the combustion heat supplying technology of biomass pyrolysis furnace.
Background technology
Biomass are the organic substances that generate by carbonic acid gas in the photosynthesis absorbing air.It is widely distributed, amount usable is large and be unique reproducible contain hydrocarbon component and heat energy, storable natural raw material.Utilize biomass to carry out energy utilization and Chemical Manufacture, have CO
2The feature of zero release.Along with the day by day minimizing of traditional fossil energy reserves, and because the problem of environmental pollution that uses fossil energy to bring, pay attention to and develop common recognition renewable, that eco-friendly power source has become national governments.By methods such as thermochemistry, biological chemistries, biomass can be changed into gas or the liquid fuel of cleaning, produce combined diesel oil/gasoline, Chemicals and satisfy electricity needs etc., have the potentiality that comprehensively substitute fossil energy, become the new forms of energy that first develop countries in the world.
The method that biomass is changed into clean air or liquid fuel is a lot, wherein, the biomass high-temperature entrained flow bed gasification technology is compared with other technology can adapt to all biomass kinds, and its gasification temperature is higher, the interior temperature of stove is relatively more even, tar all cracking, CH in air flow bed
4Content is less, gasification obtains refining synthetic gas; Air flow bed has good amplification characteristic simultaneously, is specially adapted to the application of large industrialized.Refining synthetic gas refers to: in the synthetic gas that gasification directly obtains, and CO and H
2Be main ingredient, without tar, CH
4Content＜0.5%.Refining synthetic gas is mainly for the production of combined diesel oil/gasoline, alkene, alkane, petroleum naphtha, lubricating oil, and the battery raw material etc. that acts as a fuel, and is applicable to produce the utilization of new energy resources of various Chemicals and various super clear gusolines; In reproducible Biomass Energy Utilization field, it is the gordian technique of biomass chemical industry and synthetic oil New Energy Industry especially.But, entrained flow gasification has strict restriction to the particle diameter of raw material, the raw material that enters air flow bed need to be worn into ultra-fine micron particles, yet according to existing fragmentation or powder-making technique, can't the biomass material that fibre-bearing is more grind into and satisfy the required particle diameter of air flow bed operation, this has just caused and biomass material can't be directly used in entrained flow gasification; Preferably be exactly first biomass to be carried out pyrolysis to resolve into pyrolysis gas and solid-state charcoal, then solid-state charcoal powder process and pyrolysis gas sent in the air flow bed together and gasified.
The equipment that biomass is carried out pyrolysis and resolve into pyrolysis gas and solid-state charcoal is exactly pyrolysis oven, reduce equipment cost for the material requirements that reduces pyrolysis oven, the best way is exactly under 400 ℃～600 ℃ medium pyrolysis temperature (warm solution in the abbreviation), and biomass are carried out middle temperature fast pyrolysis processes, biomass decomposition become to send in the air flow bed behind pyrolysis gas and the solid-state charcoal (more solid-state charcoal being ground to form powdered carbon) again gasify.And the key of warm fast pyrolysis technology is exactly the combustion heat supplying technology of pyrolysis oven in the realization biomass, and it is to determine heating efficiency, pyrolysis rate, pyrolysis product quality and the pyrolysis oven equipment manufacturing cost of biomass pyrolytic and the core of pyrolysis oven heat supply safe operation.
The heat supply method that at present biomass is carried out pyrolysis mainly is divided into two classes, and the one, the indirect heat exchange pyrolysis, another is the direct heat exchange pyrolysis.
The indirect heat exchange pyrolysis is the heater block that first heat is delivered to pyrolysis oven, and then by the biomass of heater block with the pyrolysis of heat transferred need, be 2000480005170.3 Chinese patents such as application number, application number is 200610124521.3 Chinese patents etc., it all is the heating plant of typical indirect heat exchange pyrolysis, can satisfy preferably the demand of slow pyrolysis, but it is slow that its shortcoming is exactly the pyrolysis temperature rise rate, heat transfer efficiency is low, outer heat supplied is large, heat utilization ratio is low, warm fast pyrogenation demand in the special biomass for large industrialized, cause outer heat supplied very big, heat transfer efficiency and heat utilization ratio are low, the heater block temperature is very high or heater block equipment is huge, the heater block material requires high and easy damage, substantially can not satisfy the demand of industrial biological matter fast pyrogenation.
The direct heat exchange pyrolysis has dual mode at present, and the one, thermal medium (such as outside high-temperature flue gas etc.) is directly inputted in the pyrolysis oven; Another is to pass into oxygenant and/or the direct combustion heat supplying of external fuel in pyrolysis oven, directly mixes with the biomass of need pyrolysis.Its common feature is that heat transfer efficiency is high, heat utilization ratio can reach 100%, if but heat supply method is improper in industrialized application will great operating safety hidden danger.
With outside high-temperature flue gas be directly inputted to that the flue-gas temperature that the method in the pyrolysis oven can cause the outside to enter is very high, exhaust gas volumn greatly, the flue material requirements is high, pyrolysis oven is large-minded, and cause the entrained flow gasification inefficiency of back, this direct heat exchange method for pyrolysis obviously not to be adapted at using in the industrialization.At present, the direct heat exchange pyrolysis is generally all adopted and pass into oxygenant and/or the direct combustion heat supplying of external fuel in pyrolysis oven.Such as the pyrolysis oven combustion heat supplying in the Carbon-V technique of German Ke Lin company, in the material of its external disclosure publicity, its oxygenant is oxygen or air, be arranged in the pyrolysis oven bottom, with sintered plate oxidant inlet and charcoal are separated, charcoal and pyrolysis gas self-produced in oxygenant and the pyrolysis oven carry out the combustion reactions heat supply; Its sintered plate extreme temperatures, and there is larger potential safety hazard in burning under the whipped state of pyrolysis oven.And for example application number is to have proposed in 200810236614.4 Chinese patents to utilize inflammable gas and the oxygen of outer confession that direct combustion reactions occurs in pyrolysis oven, the heat that provides biomass pyrolytic required is provided the reaction liberated heat, but the tissue that how to burn is not described, just mention by the control oxidant content and control the pyrolysis oven medial temperature, do not organize heat supply but there is explanation how in pyrolysis oven, to burn.And the key problem in technology of the direct combustion heat supplying of pyrolysis oven is how to burn tissue, the top temperature in control combustion zone how, and this is the key of pyrolysis oven safe and stable operation, also is the core that determines the requirement of pyrolysis oven equipment and materials.
In order to satisfy the each side demand of warm fast pyrogenation in the biomass, adopt the direct heat exchange pyrolysis to be mode preferably, and the best approach that can through engineering approaches enforcement adopt direct combustion heat supplying pyrolysis exactly.But can find out from top introduction, at present all known direct combustion heat supplying method for pyrolysis all exist various deficiencies and potential safety hazard, all can not satisfy simultaneously the industrializing implementation requirements such as high heat transfer efficiency, high calorie utilising efficiency, combustion heat supplying safety, operating safety are stable, the low investment of pyrolysis oven equipment.
The combustion heat supplying technology of biomass pyrolysis furnace of the present invention is must the preferential gordian technique that solves in the renewable solid-fuelled middle temperature fast pyrolysis technology of biomass.
Reach the excelsior unremitting pursue of cause based on contriver's expertise inside information and the practical experience of enriching for many years, in conscientiously and fully investigation, understand, analyze, sum up on above-mentioned existing known technology and the present situation basis, requirement according to the biogas fluidized bed gasification, in the pyrolysis processing process of biomass, satisfy under the technical requirements prerequisite of " the middle temperature fast pyrogenation of biomass and repeatedly cracking of pyrolysis gas ", horizontal pyrolysis oven is taked " dispersed supply of heating of directly burning " gordian technique, succeeded in developing " combustion heat supplying technology of biomass pyrolysis furnace ", can be efficient, combustion heat supplying safety, operating safety is stable, the raw materials pretreatment requirement of the refining synthetic gas of biomass is satisfied in the low investment place of pyrolysis oven equipment, has very important realistic meaning and far-reaching strategic importance.
Summary of the invention
The present invention takes " dispersed supply of heating of directly burning " gordian technique to biomass pyrolysis furnace, be applied in the technology of direct burning dispersed supply of heating of pyrolysis oven, to the biomass pyrolytic dispersed supply of heating of directly burning, 1., this dispersed supply of heating technology of directly burning is comprised of a plurality of sets of burners, and on pyrolysis oven top dispersed placement vertically, the combustion heat supplying amount that whole pyrolysis oven is needed is distributed in each sets of burners of arranging vertically; 2., each sets of burners is constituted by a plurality of little burner nozzles, the burning heat release of each sets of burners is distributed in the flame of little burner nozzle formation, simultaneously in order to guarantee flameholding and combustion completion, the relative centralized arrangement of little burner nozzle of each sets of burners, spacing is 5d～14d between the adjacent little burner nozzle, and d is little burner nozzle external diameter; 3., fuel and oxygenant enter in the pyrolysis oven by the autonomous channel of described each little burner nozzle respectively, are fully separated in the past entering pyrolysis oven, are non-premixed combustion in pyrolysis oven; 4., be provided with a steady combustion plate in the little burner nozzle exit of corresponding each sets of burners, surely firing plate and the little burner nozzle spacing between exporting is between 0.5d～3.0d, and d is little burner nozzle external diameter; 5., be provided with perforate at the steady combustion plate corresponding to place, each little burner nozzle outlet position, the aperture is between 1.2d～3.0d, and d is little burner nozzle external diameter.
Described each little burner nozzle comprises two autonomous channels at least, is respectively the passage of fuel and oxygenant, and channel wall thickness is 1～3 millimeter.Be filled with refractory materials between the little burner nozzle of each sets of burners.High combustion flame temperature in the described pyrolysis oven is below 1600 ℃.Described steady combustion plate is a kind of of heat-resisting steel sheet and plate with holes, ceramic plate.Described all little burner nozzle and steady combustion plate not with pyrolysis oven in solid materials and pyrolysis oven in the agitator arm that arranges contact.
The purpose that reaches by the present invention is: 1., for using air flow bed gasifying biomass is created the prerequisite technical qualification; 2., make that Nature creating, quantity are large, wide, reproducible " biomass " new raw material that distributes is fully used, turn waste into wealth and protection of the environment effectively; 3., use the horizontal pyrolysis oven that is provided with agitator arm, under satisfied " the middle temperature fast pyrogenations of biomass " technical requirements prerequisite, with " dispersed supply of heating of directly burning " gordian technique, " combustion heat supplying technology of biomass pyrolysis furnace " is provided, realized that efficient, the combustion heat supplying safety of biomass pyrolysis furnace, operating safety are stable, the technical requirements of the low investment of equipment; 4., solid technical backstopping is established in the make a living developing of material chemical industry and synthetic oil New Energy Industry; 5., effective protection of the environment, raising overall economic efficiency.
The present invention can accomplish the end in view.
For achieving the above object, technical scheme provided by the invention is:
A kind of combustion heat supplying technology of biomass pyrolysis furnace is applied in the technology of direct burning dispersed supply of heating of pyrolysis oven, to the biomass pyrolytic dispersed supply of heating of directly burning;
1., this dispersed supply of heating technology of directly burning is comprised of a plurality of sets of burners, and on pyrolysis oven top dispersed placement vertically, the combustion heat supplying amount that whole pyrolysis oven is needed is distributed in each sets of burners of arranging vertically;
2., each sets of burners is constituted by a plurality of little burner nozzles, the burning heat release of each sets of burners is distributed in the flame of little burner nozzle formation, simultaneously in order to guarantee flameholding and combustion completion, the relative centralized arrangement of little burner nozzle of each sets of burners, spacing is 5d～14d between the adjacent little burner nozzle, and d is little burner nozzle external diameter;
3., fuel and oxygenant enter in the pyrolysis oven by the autonomous channel of described each little burner nozzle respectively, are fully separated in the past entering pyrolysis oven, are non-premixed combustion in pyrolysis oven;
4., be provided with a steady combustion plate in the little burner nozzle exit of corresponding each sets of burners, surely firing plate and the little burner nozzle spacing between exporting is between 0.5d～3.0d, and d is little burner nozzle external diameter;
5., be provided with perforate at the steady combustion plate corresponding to place, each little burner nozzle outlet position, the aperture is between 1.2d～3.0d, and d is little burner nozzle external diameter.
The combustion heat supplying technology of described biomass pyrolysis furnace, described each little burner nozzle comprises two autonomous channels at least, is respectively the passage of fuel and oxygenant, and channel wall thickness is 1～3 millimeter.
The combustion heat supplying technology of described biomass pyrolysis furnace is filled with refractory materials between the little burner nozzle of each sets of burners.
The combustion heat supplying technology of described biomass pyrolysis furnace, the high combustion flame temperature in the described pyrolysis oven is below 1600 ℃.
The combustion heat supplying technology of described biomass pyrolysis furnace, described steady combustion plate are a kind of of heat-resisting steel sheet and plate with holes, ceramic plate.
The combustion heat supplying technology of described biomass pyrolysis furnace, described all little burner nozzle and steady combustion plate not with pyrolysis oven in solid materials and pyrolysis oven in the agitator arm that arranges contact.
The combustion heat supplying technology of described biomass pyrolysis furnace, a kind of in the inflammable gas that described fuel provides for the outside, the fuel oil; Described oxygenant is a kind of in the gas mixture of gas mixture, oxygen and nitrogen of oxygen, air, oxygen and carbon dioxide gas.
Owing to adopted technical scheme provided by the present invention.Because pyrolysis oven of the present invention has adopted " dispersed supply of heating of directly burning " gordian technique under the technical requirements prerequisite that satisfies " the middle temperature fast pyrogenations of biomass ".Since the present invention by a plurality of sets of burners on pyrolysis oven top dispersed placement vertically; Each sets of burners is made of a plurality of little burner nozzles, adjacent little burner nozzle spacing 5d～14d, and fuel and oxygenant are entered in the pyrolysis oven by the autonomous channel of each little burner nozzle respectively, are non-premixed combustion in pyrolysis oven; 1～3 millimeter of the channel wall thickness of each little burner nozzle; The steady combustion plate that the little burner nozzle outlet 0.5d～3.0d place of corresponding sets of burners has an aperture 1.2d～3.0d to be done by heat-resisting steel sheet and plate or ceramic plate; D is little burner nozzle external diameter; Little burner nozzle and steady combustion plate do not contact with the agitator arm that arranges in solid materials and the pyrolysis oven in the pyrolysis oven; High combustion flame temperature is below 1600 ℃ in the pyrolysis oven; Be used for the pyrolysis oven that biomass pyrolytic is processed, finish raw material for the biomass entrained flow gasification and process.Compare with existing known technology, obtained following beneficial effect:
1, because biomass of the present invention are the rubbish of root/stem/leaf/flower/really, carcase, ight soil, coal and the carbohydrate of plant, thus obtained Nature creating raw material quantity large, distribute wide, renewable, draw materials conveniently, the choice is large, the pyrolysis medial temperature can the beneficial effect such as adjust with the ingredient requirement variation.
2, owing to direct burning dispersed supply of heating technology of the present invention contains: in pyrolysis oven " by a plurality of sets of burners form and on pyrolysis oven top vertically dispersed placement, the combustion heat supplying amount of whole pyrolysis oven needs is distributed in each sets of burners of arranging vertically " etc. technology contents, thereby obtained to make pyrolysis oven to realize the beneficial effect of " dispersed supply of heating " technical requirements.
3, since direct burning dispersed supply of heating technology of the present invention also contain: in pyrolysis oven " each sets of burners by a plurality of little burner nozzles constitute, with the burning heat release of each sets of burners be distributed in the flame that little burner nozzle forms, high combustion flame temperature is below 1600 ℃ " etc. technology contents, thereby obtained to make pyrolysis oven to realize " dispersed supply of heating of directly burning " technical requirements, even adopt oxygen as oxygenant, its high combustion flame temperature is also at the beneficial effect of lower span of control.
4, because direct burning dispersed supply of heating technology of the present invention also contains: technology contents such as " little burner nozzle have consisted of non-premixed combustion with the autonomous channel that extra fuel and oxygenant are provided respectively; spacing adjacent and that be filled with between the little burner nozzle of refractory materials is 5d～14d (d is the external diameter of little burner nozzle) " in pyrolysis oven, thereby obtained the beneficial effect of " the relative centralized arrangement of little burner noz(zle) of each sets of burners; flameholding; heat supply is safe and reliable; and the generation of having stopped the problems such as tempering; pyrolysis oven combustion space temperature is even, stable ".
5, because the wall thickness of little burner nozzle of the present invention is " 1～3 millimeter ", be transferred the flow velocity of gas for this wall thickness, just can guarantee the cooling of little burner nozzle passage is satisfied the beneficial effect of the temperature requirement of nozzle material by gas flow.
6, because direct burning dispersed supply of heating technology of the present invention also contains: the technology contents such as " be provided with a steady combustion plate in the little burner nozzle exit of corresponding each sets of burners; surely firing plate and the little burner nozzle spacing between exporting is (d is little burner nozzle external diameter) between 0.5d～3.0d; fire surely that to be provided with the aperture on the plate be perforate (d is little burner nozzle external diameter) between 1.2d～3.0d; surely fire plate and be a kind of of heat-resisting steel sheet and plate with holes or ceramic plate " in the pyrolysis oven, thereby obtained the beneficial effect of " in igniting and normal course of operation, further having guaranteed flameholding; reliable ".
7, since all little burner nozzle of the present invention and steady combustion plate not with pyrolysis oven in solid materials and pyrolysis oven in the agitator arm that arranges contact that (pyrolysis oven is provided with on turning axle, the turning axle and is provided with agitator arm, stir to do the solid materials in the pyrolysis oven stirred), thus the beneficial effect of " flameholding, heat supply safe and reliable " obtained.
8, since fuel of heat supply of the present invention both can be extra fuel such as inflammable gas and fuel oil, also can be the pyrolysis gas that the pyrolysis of pyrolysis oven endogenous substance produces, oxygenant is a kind of in the gas mixture of gas mixture, oxygen and nitrogen of air, oxygen, oxygen and carbon dioxide gas, thereby has obtained the choice of fuel and oxygenant all large and flameholding is safe and reliable, the beneficial effect being convenient to implement.
9; rationally described with each above bar by the methodological science that the present invention sets; thereby obtained " the dispersed supply of heating technology of directly burning "; use for the entrained flow bed gasification technology of biomass and to have solved difficulty; the prerequisite technical qualification have been created; make Nature creating; quantity is large; it is wide to distribute; reproducible " biomass " new raw material is turned waste into wealth and is fully used; and protection of the environment effectively; technical backstopping is established in the developing of material chemical industry and synthetic oil New Energy Industry of making a living; tachnical storage and technology implementation scheme are provided; effect stability is reliable; overall economic efficiency is good, breaks away from beneficial effects such as traditional fossil energy dependences.
Description of drawings
Fig. 1 is the synoptic diagram of " pyrolysis oven " in the specific embodiment of the invention.Solid arrow among the figure represents that biomass material entrance, the dotted arrow through pulverizing represents that pyrolysis gas outlet, double solid line arrow represent the charcoal outlet.
Fig. 2 is that the A-A of Fig. 1 is to analysing and observe enlarged diagram; Be that the A-A of " pyrolysis oven " in the specific embodiment of the invention is to analysing and observe enlarged diagram.
Fig. 3 is that a plurality of " the little burner nozzles " on " pyrolysis oven " arrange and whole enlarged diagram as square relative centralized arrangement in even mode in the specific embodiment of the invention.
To be that " pyrolysis oven " is upper in the specific embodiment of the invention arrange and integral body corresponding " surely firing plate " enlarged diagram after the square and relative centralized arrangement in even mode with a plurality of " little burner nozzles " Fig. 4.
Fig. 5 be in the specific embodiment of the invention a plurality of " the little burner nozzles " on " pyrolysis oven " in addition close interior thin mode to arrange and be whole be the square relatively enlarged diagram of centralized arrangement.
Fig. 6 be in the specific embodiment of the invention " pyrolysis oven " upper with a plurality of " little burner nozzles " in addition close interior thin mode arrange and integral body is " surely firing plate " enlarged diagram corresponding after the square and relative centralized arrangement.
Fig. 7 is that a plurality of " the little burner nozzles " on " pyrolysis oven " arrange and whole enlarged diagram as circular relative centralized arrangement in even mode in the specific embodiment of the invention.
To be that " pyrolysis oven " is upper in the specific embodiment of the invention arrange and whole " surely firing plate " enlarged diagram corresponding after the relative centralized arrangement of circle in even mode with a plurality of " little burner nozzles " Fig. 8.
Fig. 9 is that a plurality of " the little burner nozzles " on " pyrolysis oven " arrange and whole enlarged diagram as the relative centralized arrangement of rhombus in even mode in the specific embodiment of the invention.
To be that " pyrolysis oven " is upper in the specific embodiment of the invention arrange and integral body corresponding " surely firing plate " enlarged diagram after the relative centralized arrangement of rhombus in even mode with a plurality of " little burner nozzles " Figure 10.
Figure 11 is that a plurality of " the little burner nozzles " on " pyrolysis oven " arrange and whole enlarged diagram as the relative centralized arrangement of rectangle in even mode in the specific embodiment of the invention.
To be that " pyrolysis oven " is upper in the specific embodiment of the invention arrange and integral body corresponding " surely firing plate " enlarged diagram after the relative centralized arrangement of rectangle in even mode with a plurality of " little burner nozzles " Figure 12.
Figure 13 is that a plurality of " the little burner nozzles " on " pyrolysis oven " arrange and whole enlarged diagram as oval relative centralized arrangement in even mode in the specific embodiment of the invention.
To be that " pyrolysis oven " is upper in the specific embodiment of the invention arrange and whole " surely firing plate " enlarged diagram corresponding after the relative centralized arrangement of ellipse in even mode with a plurality of " little burner nozzles " Figure 14.
Label among the figure: 1, the body of heater shell of pyrolysis oven, 2, sets of burners, 3, little burner nozzle (the little burner nozzle of non-premixed combustion), 4, surely fire plate, 5, stir shaft, 6, agitator arm, 7, refractory materials.
Embodiment one
Below in conjunction with Figure of description, the present invention is described in detail.Shown in Figure of description:
A kind of combustion heat supplying technology of biomass pyrolysis furnace is applied in the technology of direct burning dispersed supply of heating of pyrolysis oven, to the biomass pyrolytic dispersed supply of heating of directly burning;
1., this dispersed supply of heating technology of directly burning is comprised of a plurality of sets of burners, and on pyrolysis oven top dispersed placement vertically, the combustion heat supplying amount that whole pyrolysis oven is needed is distributed in each sets of burners of arranging vertically;
2., each sets of burners is constituted by a plurality of little burner nozzles, the burning heat release of each sets of burners is distributed in the flame of little burner nozzle formation, simultaneously in order to guarantee flameholding and combustion completion, the relative centralized arrangement of little burner nozzle of each sets of burners, spacing is 5d～14d between the adjacent little burner nozzle, and d is little burner nozzle external diameter;
3., fuel and oxygenant enter in the pyrolysis oven by the autonomous channel of described each little burner nozzle respectively, are fully separated in the past entering pyrolysis oven, are non-premixed combustion in pyrolysis oven;
4., be provided with a steady combustion plate in the little burner nozzle exit of corresponding each sets of burners, surely firing plate and the little burner nozzle spacing between exporting is between 0.5d～3.0d, and d is little burner nozzle external diameter;
5., be provided with perforate at the steady combustion plate corresponding to place, each little burner nozzle outlet position, the aperture is between 1.2d～3.0d, and d is little burner nozzle external diameter.
The combustion heat supplying technology of described biomass pyrolysis furnace, described each little burner nozzle comprises two autonomous channels at least, is respectively the passage of fuel and oxygenant, and channel wall thickness is 1～3 millimeter.
The combustion heat supplying technology of described biomass pyrolysis furnace is filled with refractory materials between the little burner nozzle of each sets of burners.
The combustion heat supplying technology of described biomass pyrolysis furnace, the high combustion flame temperature in the described pyrolysis oven is below 1600 ℃.
The combustion heat supplying technology of described biomass pyrolysis furnace, described steady combustion plate are a kind of of heat-resisting steel sheet and plate with holes, ceramic plate.
The combustion heat supplying technology of described biomass pyrolysis furnace, described all little burner nozzle and steady combustion plate not with pyrolysis oven in solid materials and pyrolysis oven in the agitator arm that arranges contact.
The combustion heat supplying technology of described biomass pyrolysis furnace, a kind of in the inflammable gas that described fuel provides for the outside, the fuel oil; Described oxygenant is a kind of in the gas mixture of gas mixture, oxygen and nitrogen of oxygen, air, oxygen and carbon dioxide gas.
In above-mentioned specific implementation process: spacing between the described adjacent little burner nozzle is implemented take 5d, 6d, 7d, 8d, 9d, 10d, 11d, 12d, 13d, 14d (d is as little burner nozzle external diameter) respectively; Described steady combustion plate is implemented with heat-resisting steel sheet and plate with holes, ceramic plate respectively; Spacing between described steady combustion plate and the outlet of little burner nozzle is implemented take 0.5d, 1.0d, 1.5d, 2.0d, 2.5d, 3.0d (d is as little burner nozzle external diameter) respectively; Implement take 1.2d, 1.5d, 1.8d, 2.0d, 2.2d, 2.5d, 2.8d, 3.0d (d is as little burner nozzle external diameter) respectively in aperture to the described perforate that arranges at the steady combustion plate corresponding to place, each little burner nozzle outlet position; The fuel of described each little burner nozzle and the wall thickness of oxidant channel are implemented with 1,1.5,2,2.5,3 millimeter respectively; The fuel that described outside provides is implemented with inflammable gas, fuel oil respectively; Described oxygenant is implemented with the gas mixture of gas mixture, oxygen and the nitrogen of air, oxygen, oxygen and carbon dioxide gas respectively; All received the good result of expection.
Embodiment two
Implement by embodiment one, just: just as shown in Figure 3, Figure 4, a plurality of little burner nozzle 3 in each sets of burners 2 is arranged and whole as square relatively centralized arrangement (as shown in Figure 3) in even mode, each steady combustion plate 4 is arranged with the even mode of a plurality of little burner nozzles 3 and integral body is corresponding after the square and relative centralized arrangement (as shown in Figure 4); Through on probation, received equally the expection good result.
Embodiment three
Implement by embodiment one, just: as Fig. 5, shown in Figure 6, to close interior thin mode beyond a plurality of little burner nozzle 3 in each sets of burners 2 arrange and whole be square relatively centralized arrangement (as shown in Figure 5), close interior thin mode beyond each steady combustion plate 4 and a plurality of little burner nozzles 3 is arranged and integral body is corresponding after the square and relative centralized arrangement (as shown in Figure 6); Through on probation, received equally the good result of expection.
Embodiment four
Implement by embodiment one, just: as Fig. 7, shown in Figure 8, to a plurality of little burner nozzle 3 in each sets of burners 2 take even mode arrange and integral body as circular relatively centralized arrangement (as shown in Figure 7), to arranging and integral body corresponding (as shown in Figure 8) after the relative centralized arrangement of circle in even mode of each steady combustion plate 4 and a plurality of little burner nozzles 3; Through on probation, received equally the good result of expection.
Embodiment five
Implement by embodiment one, just: as Fig. 9, shown in Figure 10, to a plurality of little burner nozzle 3 in each sets of burners 2 take even mode arrange and integral body as the relative centralized arrangement (as shown in Figure 9) of rhombus, to arranging and integral body corresponding (as shown in figure 10) after the relative centralized arrangement of rhombus in even mode of each steady combustion plate 4 and a plurality of little burner nozzles 3; Through on probation, received equally the good result of expection.
Embodiment six
Implement by embodiment one, just: as Figure 11, shown in Figure 12, to a plurality of little burner nozzle 3 in each sets of burners 2 take even mode arrange and integral body as the relative centralized arrangement (as shown in figure 11) of rectangle, to arranging and integral body corresponding (as shown in figure 12) after the relative centralized arrangement of rectangle in even mode of each steady combustion plate 4 and a plurality of little burner nozzles 3; Through on probation, received equally the good result of expection.
Embodiment seven
Implement by embodiment one, just: as Figure 13, shown in Figure 14, to a plurality of little burner nozzle 3 in each sets of burners 2 take even mode arrange and integral body as oval relatively centralized arrangement (as shown in figure 13), to arranging and integral body corresponding (as shown in figure 14) after the relative centralized arrangement of ellipse in even mode of each steady combustion plate 4 and a plurality of little burner nozzles 3; Through on probation, received equally the good result of expection.
By the explanation of above implementation: 1., the axial dispersion setting is constituted by a plurality of little burner nozzles 3 in pyrolysis oven sets of burners 2 and surely fire agitator arm 6 on plate 4, stir shaft 5 and the stir shaft 5 simple in structure, ingenious, practical, cost is low, provides enforcement carrier of the present invention; 2., the axial dispersion setting has been realized the combustion heat supplying amount that whole pyrolysis oven needs is distributed to purpose in each sets of burners of arranging vertically by the sets of burners 2 that a plurality of little burner nozzles 3 constitute in pyrolysis oven; 3., little burner nozzle 3 various forms of relative centralized arrangement and adjacent spacing be scientific and reasonable, it is stable to have reached the pyrolysis oven internal combustion, and can control again high combustion flame temperature below 1600 ℃; 4., the setting of the non-premixed combustion in pyrolysis oven of fuel and oxygenant and steady combustion plate 4, and all little burner nozzles 3 and steady combustion plate 4 not with pyrolysis oven in solid materials and pyrolysis oven in the agitator arm 6 that arranges contact, can make the pyrolytic process of biomass stable, reliable, safe, efficient, workable, low without particular requirement, required investment to the making material of pyrolysis oven equipment, be convenient to being applicable of engineering construction, overall economic efficiency is remarkable; 5., pyrolysis oven in operational process not only can by adjust fuel quantity that the outside provides, but also can be by adjusting inert component content in the oxygenant, can also regulate the top temperature of combustion zone by adjusting with the rotating speed of the stir shaft of agitator arm simultaneously, thereby realized core technology---the adjusting of " top temperature of combustion zone "; 6., the dispersed supply of heating technological sciences of directly burning are reasonable, satisfied the technical requirements of " the middle temperature fast pyrogenations of biomass ", the total characteristics of adapted biomass raw material are for next step efficient air fluidized bed gasification of implementing biomass has solved technical difficulty, finished the technical finesse of raw material.
The above is preferred embodiment of the present invention only, is not the present invention is done any pro forma restriction; The those of ordinary skill of all industry all can be by shown in the above and the Figure of description and implement swimmingly the present invention; In every case the change of making not breaking away from technical solution of the present invention, the equivalent variations of modifying and developing are equivalent embodiment of the present invention, all still belong to the protection domain of technical solution of the present invention.
Claims (7)
1. the combustion heat supplying device of a biomass pyrolysis furnace is applied in the technology of direct burning dispersed supply of heating of pyrolysis oven, to the biomass pyrolytic dispersed supply of heating of directly burning, it is characterized in that:
1., this dispersed supply of heating device that directly burns is comprised of a plurality of sets of burners, and on pyrolysis oven top dispersed placement vertically, the combustion heat supplying amount that whole pyrolysis oven is needed is distributed in each sets of burners of arranging vertically;
2., each sets of burners is constituted by a plurality of little burner nozzles, the burning heat release of each sets of burners is distributed in the flame of little burner nozzle formation, simultaneously in order to guarantee flameholding and combustion completion, the relative centralized arrangement of little burner nozzle of each sets of burners, spacing is 5d～14d between the adjacent little burner nozzle, and d is little burner nozzle external diameter;
3., fuel and oxygenant enter in the pyrolysis oven by the autonomous channel of described each little burner nozzle respectively, are fully separated in the past entering pyrolysis oven, are non-premixed combustion in pyrolysis oven;
4., be provided with a steady combustion plate in the little burner nozzle exit of corresponding each sets of burners, surely firing plate and the little burner nozzle spacing between exporting is between 0.5d～3.0d, and d is little burner nozzle external diameter;
5., be provided with perforate at the steady combustion plate corresponding to place, each little burner nozzle outlet position, the aperture is between 1.2d～3.0d, and d is little burner nozzle external diameter.
2. the combustion heat supplying device of biomass pyrolysis furnace according to claim 1, it is characterized in that: described each little burner nozzle comprises two autonomous channels at least, is respectively the passage of fuel and oxygenant, and channel wall thickness is 1～3 millimeter.
3. the combustion heat supplying device of biomass pyrolysis furnace according to claim 1 is characterized in that: be filled with refractory materials between the little burner nozzle of each sets of burners.
4. the combustion heat supplying device of biomass pyrolysis furnace according to claim 1 is characterized in that: the high combustion flame temperature in the described pyrolysis oven is below 1600 ℃.
5. the combustion heat supplying device of biomass pyrolysis furnace according to claim 1 is characterized in that: described steady combustion plate is a kind of of heat-resisting steel sheet and plate with holes, ceramic plate.
6. the combustion heat supplying device of biomass pyrolysis furnace according to claim 1 is characterized in that: described all little burner nozzle and steady combustion plate not with pyrolysis oven in solid materials and pyrolysis oven in the agitator arm that arranges contact.
7. the combustion heat supplying device of biomass pyrolysis furnace according to claim 1 and 2 is characterized in that: a kind of in the inflammable gas that described fuel provides for the outside, the fuel oil; Described oxygenant is a kind of in the gas mixture of gas mixture, oxygen and nitrogen of oxygen, air, oxygen and carbon dioxide gas.
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| CN111718729A (en) * | 2020-06-24 | 2020-09-29 | 苏州乔发环保科技股份有限公司 | Gas carbonizing furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3830151A1 (en) * | 1988-09-05 | 1990-03-15 | Siemens Ag | Pyrolysis reactor with heating device |
| CN101003739A (en) * | 2007-01-15 | 2007-07-25 | 合肥天焱绿色能源开发有限公司 | Internal combustion type thermal cracking in low pressure gasification method and equipment for solid biomass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3830151A1 (en) * | 1988-09-05 | 1990-03-15 | Siemens Ag | Pyrolysis reactor with heating device |
| CN101003739A (en) * | 2007-01-15 | 2007-07-25 | 合肥天焱绿色能源开发有限公司 | Internal combustion type thermal cracking in low pressure gasification method and equipment for solid biomass |
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