CN102732276A - Rice husk direct-combustion and carbonization combination apparatus - Google Patents
Rice husk direct-combustion and carbonization combination apparatus Download PDFInfo
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- CN102732276A CN102732276A CN2012102065389A CN201210206538A CN102732276A CN 102732276 A CN102732276 A CN 102732276A CN 2012102065389 A CN2012102065389 A CN 2012102065389A CN 201210206538 A CN201210206538 A CN 201210206538A CN 102732276 A CN102732276 A CN 102732276A
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 179
- 235000009566 rice Nutrition 0.000 title claims abstract description 179
- 239000010903 husk Substances 0.000 title claims abstract description 169
- 238000003763 carbonization Methods 0.000 title claims abstract description 100
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 57
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 178
- 239000007789 gas Substances 0.000 claims abstract description 53
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- 239000001301 oxygen Substances 0.000 claims abstract description 28
- 238000009826 distribution Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 16
- 230000006837 decompression Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 25
- 229910052799 carbon Inorganic materials 0.000 abstract description 23
- 238000000197 pyrolysis Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 239000000725 suspension Substances 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000003570 air Substances 0.000 description 75
- 239000002956 ash Substances 0.000 description 20
- 230000006872 improvement Effects 0.000 description 14
- 239000000470 constituent Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229960001866 silicon dioxide Drugs 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
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- 239000002075 main ingredient Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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- 229920006395 saturated elastomer Polymers 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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- Solid-Fuel Combustion (AREA)
Abstract
A rice husk direct-combustion and carbonization combination apparatus comprises a rice husk suspension pyrolysis settlement system, a carbonization bed system, a gas distribution system and a control system with whole structures or partial structures arranged in a hearth, wherein the rice husk suspension pyrolysis settlement system is a working portion for completing the feeding and the pyrolysis of rice husks; the gas distribution system is a working portion for adjusting the content of oxygen in air in the equipment hearth; the carbonization bed system is a working portion for the accumulation carbonization of the rice husks; and the control system is a working portion for monitoring and regulating the temperature in the hearth and the content of oxygen in the air in the hearth. The apparatus allows the combustion and the carbonization of the rice husks to be simultaneously completed, carbonized rice husks are rice husk combustion byproducts, the content of carbon in the carbonized rice husks can be adjusted according to requirements of downstream users, and the apparatus can stably run in the practical production.
Description
Technical field
The present invention relates to a kind of carbonization rice husk device, be specifically related to a kind of rice husk direct combustion coproduction carbonization rice husk device.
Background technology
At present, similar with the various common biomass fuel, rice husk also is made up of organic and inanimate matter, and organic staple is Mierocrystalline cellulose, semicellulose and xylogen, and the basal component of inanimate matter is moisture and ash content.
In boiler, producing steam, hot water or thermal oil through the burning heat release and supply the user to use, is the most general Energy utilization patterns of rice husk.At present, a lot of electricity generation boilers or Industrial Boiler use rice husk to be fuel, and the combustion system of employing is with coal-fired identical, and combustion equipment commonly used has traveling-grate stoker, reciprocal grate, fluidized-bed etc.
The special character of rice husk is: dry basic ash oontent is about 15%; The biomass that are higher than other kind far away; The conversion ash content is higher than most of coal, so rice husk is a kind of very special high ash biomass fuel; This makes rice husk in energy sources conversion, and very special combustion characteristic and lime-ash characteristic are arranged.
When using conventional solid fuel ignition equipment to use rice husk, ignition condition and fugitive constituent combustion conditions are all very superior, so rice husk is a kind of incendiary solid fuel that is easy to.Rice husk incendiary difficult point is that fixed carbon is difficult to after-flame, causes efficiency of combustion low, and a large amount of lime-ash of generation become solid waste to be difficult to handle; Its reason is that the ash oontent of rice husk is too high, and the main ingredient of ash content is a silicon-dioxide, in the combustion processes; Fixed carbon and silicon-dioxide are combined into the silicon-carbon complex compound under hot conditions, extremely be difficult to after-flame, and the final rice hull ash that forms is taken away a large amount of unburnt carbon; Particularly the tap density of rice hull ash is less than 200kg/ m3; Compare with middle matter bituminous coal, the boiler of same capacity, the volume of the rice hull ash of discharge is 5～8 times of coal ash volume.Coal ash can be used as the raw material of brick or cement, is suitable for as the use of building materials raw material and rice husk ash composition and carbon residue combustionproperty are neither, only at metallurgy industry a spot of rice hull ash user (being used for molten steel insulation etc.) is arranged.So when organizing the rice husk burning according to existing rice husk combustion system, the difficult point of project operation is that rice hull ash is difficult to handle.
In order to solve the outlet of rice hull ash, technical have two kinds of paths: the one, improve the burn-off rate of fixed carbon as far as possible, and the carbon content of rice hull ash is dropped to very low level, further consider the comprehensive utilization (for example as lagging material) of rice hull ash again; The 2nd, reduce the burn-off rate of fixed carbon as far as possible, the carbon content of rice hull ash is brought up to very high level, produce carbonization rice husk, further consider the comprehensive utilization of carbonization rice husk again.More than two kinds of technological paths a lot of engineering practices and case study on implementation are all arranged.The rice husk direct combustion coproduction carbonization rice husk device that the present invention proposes belongs to second kind of technological path.
For second kind of technological path, the device of existing chaff-fired boiler coproduction carbonization rice husk has gasification (indirect burning) and direct combustion dual mode.The mode of the chaff-fired boiler coproduction carbonization rice husk of indirect burning is: rice husk is produced inflammable gas and carbonization rice husk through fixed-bed gasification furnace, and inflammable gas is as the fuel of boiler; This mode production capacity is very low; Inefficiency is discharged high-concentration waste water, so result of use is very poor.The rice husk coproduction carbonization rice husk that directly burns, because technical object is the output carbonization rice husk, the neither suitable use of fluidized-bed combustion equipment and reciprocal grate combustion equipment; So; The device of existing rice husk direct combustion coproduction carbonization rice husk is main with the traveling-grate stoker combustion equipment, a variety of forms of concurrent exhibition.
The mode of the rice husk direct combustion coproduction carbonization rice husk that technology content is lower is: on the traveling-grate stoker coal firing boiler of routine; Using rice husk instead is fuel; Through strengthening thickness of bed layer, accelerating fire grate speed, reduce or stop using technique means such as fire grate wind, on grate, produce carbonization rice husk.The subject matter that this mode exists has: the fugitive constituent combustion conditions is very poor, inefficiency, and the carbon black that the fugitive constituent cracking produces makes the boiler exhaust gas blackness exceed standard; The supply of fuel quantity not sufficient, the intensity of combustion of boiler furnace is low, the easy spontaneous combustion of coal bunker, boiler output descends significantly; Burner hearth is very easy to take place deflagration accident having, the security of serious threat operation; The carbon content of carbonization rice husk is unstable.
The mode of the chaff-fired boiler coproduction carbonization rice husk that technology content is higher relatively is: rice husk adopts air conveying mode; A high position sprays into burner hearth; At the suspension combustion of the large space inner tissue rice husk of burner hearth and be deposited on the grate of fire grate; Separate with the water cooling tube group between grate and the burner hearth, mix cold smoke in the grate wind chamber to reduce the intensity of grate firing.Existing this type chaff-fired boiler coproduction carbonization rice husk mode, the problem of existence mainly contains: the carbon content instability that system complex, cost are high, grate is piled up lack of homogeneity, the difficulty of slagging tap, carbonization rice husk etc.
The present invention is directed to rice husk direct combustion coproduction carbonization rice husk; Adopted a kind of new way: the preposition burner that utilizes low level to arrange; And use cooperating of settling chamber and rear arch, organize suspending pyrogenation, fugitive constituent burning and the particles settling of rice husk, use cold smoke and steam to come the oxygen level of accurate adjusting fire grate wind simultaneously; Realizing the clean-burning while of fugitive constituent, obtaining the carbonization rice husk that carbon content is stable and carbon content can accurately be regulated.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of rice husk direct combustion coproduction carbonization rice husk device; It has accomplished the burning and the carbonization of rice husk; Can the stable carbonization rice husk of output carbon content; Carbon content can accurately be regulated according to the requirement of downstream user, thereby solves the problem in the above-mentioned background technology.
The technical problem that the present invention solved adopts following technical scheme to realize:
A kind of rice husk direct combustion coproduction carbonization rice husk device; Comprise that entire infrastructure or part-structure are installed on rice husk suspending pyrogenation sedimenting system, carbonization bed system, gas distributing system, the system in the burner hearth; It is characterized in that; Said rice husk suspending pyrogenation sedimenting system is for accomplishing rice husk charging and pyrolytic operate portions; Said gas distributing system is the operate portions of air oxygen level in the conditioning equipment burner hearth, and said carbonization bed system is the operate portions that rice husk is piled up carbonization, the operate portions of said system for monitoring interior temperature of burner hearth and air oxygen level and regulating and control.
As a kind of improvement; Described rice husk suspending pyrogenation sedimenting system comprises feeding machine, material blanking tube, feeding fan, burner, settling chamber; Said feeding machine, material blanking tube connect in order; In rice husk mass transport to said settling chamber, said feeding fan is arranged at the upstream position of said burner, and said burner spray combustion direction is towards said settling chamber.
As a kind of further improvement, burner and settling chamber are arranged on the front portion of burner hearth.
As a kind of further improvement, described burner is processed by heat-resisting oxidation-resistance steel (such as 310S), is installed in side-lower in the burner hearth front wall, and the burner emission direction is for vertically upward, and gas grain mixture is close to front wall and is upwards flowed.
As a kind of further improvement, described settling chamber is a n shape structure, is positioned at the face arch position of burner hearth, is constructed by refractory materials to form.
As a kind of further improvement, be provided with air locking device between feeding machine and the material blanking tube.
As a kind of improvement; Said carbonization bed system comprises traveling-grate stoker, rear arch, mucking machine and overfire air port, and said traveling-grate stoker is arranged at the downstream position of said settling chamber, and is arranged at said rear arch below; Pile up the carbonization bed that forms by rice husk on the traveling-grate stoker from rice husk suspending pyrogenation sedimenting system; Said mucking machine is arranged at said traveling-grate stoker downstream position, and said overfire air port is arranged at the tail end of said burner hearth, and said overfire air port is connected with overfire air fan.
As a kind of further improvement, rear arch is a level arch, settling chamber go out the open height that goes out that open height is higher than rear arch.
As a kind of further improvement, overfire air port is a direct current spout, is arranged on the back wall of burner hearth, and its height location is below the rear arch arch face, and jet direction is parallel with the rear arch arch face.
As a kind of improvement; Said gas distributing system comprises the gas distribution device that is installed in the said traveling-grate stoker; Said gas distribution device comprises some air compartments, and said some air compartments all are connected with fan, cold smoke blower fan, steam blower fan, adopts air, cold smoke, steam three channel gas source; By cold smoke the oxygen amount is carried out coarse adjustment, the oxygen amount is carried out accurate adjustment by steam; Said cold smoke blower fan utilizes the cold smoke pipeline to be communicated with the furnace exhaust flue, and said cold smoke pipeline is provided with cold smoke oxygen amount adjustment doors; Said steam blower fan connects steam boiler.
As a kind of further improvement, in each air compartment of gas distribution device, the oxygen concentration of operation gas descends from front to back successively.
As a kind of further improvement, said fan, cold smoke blower fan are provided with adjustment doors.
As a kind of further improvement, the steam blower fan is provided with decompression valve.
As a kind of improvement; Said system comprises feeding fan frequency transformer, overfire air fan frequency transformer, fan frequency transformer and cold smoke fan frequency converter; The gas concentration lwevel transmitter that also comprises feeding machine buncher, traveling-grate stoker buncher, furnace outlet TP, steam boiler pressure transmitter, furnace exhaust flue place; And principal controller, said principal controller is regulated said feeding machine rotating speed according to furnace outlet temperature and steam boiler pressure; Gas concentration lwevel and the frequency of feeding machine speed adjustment feeding fan frequency transformer, overfire air fan frequency transformer, fan frequency transformer and cold smoke fan frequency converter and the rotating speed of traveling-grate stoker buncher according to furnace exhaust flue place.
The rice husk direct combustion coproduction carbonization rice husk device that the present invention proposes; Its working process is: rice husk passes through feeding machine feed continuously and quantitatively; Add burner through air locking device and material blanking tube successively, in burner, accomplish sowing of rice husk, sow power from feeding fan; The rice husk of sowing is carried at by air-flow and adherently in the settling chamber flows and spread in the settling chamber, accomplish successively catch fire, processes such as pyrolysis, fugitive constituent burning, particles settling; Separate out fugitive constituent rice husk afterwards and in settling chamber, be deposited to formation accumulation bed on the chain fire-gate surface, this bed is a rice husk carbonization bed that moves from front to back; The traveling-grate stoker below is provided with gas distribution device; Gas distribution device comprises some air compartments; Each air compartment all has the air flow inlet of three road adjustable flows, and three road air-flows are respectively from the low-temperature flue gas of furnace exhaust flue (being driven by the cold smoke blower fan), from atmospheric air (being driven by fan), from steam boiler and post-decompression water vapour; Top, chain fire-gate rear portion is provided with rear arch, and the traveling-grate stoker downstream are provided with mucking machine; Material in the carbonization bed is kept faint intensity of combustion under the effect of the reduced oxygen gas stream of gas distribution device preparation, be beneficial to further separate out fugitive constituent; According to the flow process of material, the oxygen concn of each air compartment of gas distribution device descends successively, and last air compartment of gas distribution device only uses the mixture of steam and flue gas as operation gas, so that accomplish the cooling of bed material, the final carbonization rice husk that produces of carbonization bed is discharged through mucking machine.
The present invention has accomplished the burning and the carbonization of rice husk simultaneously, and carbonization rice husk is a rice husk incendiary sub product, and the carbon content of carbonization rice husk can be regulated according to the requirement of downstream user, and device can reach steady running in actual production.In order to regulate the carbon content of carbonization rice husk, the cold smoke pipeline is provided with cold smoke oxygen amount adjustment doors, and cold smoke oxygen amount adjustment doors is communicated with atmosphere, so that regulate the oxygen concentration of cold smoke.
The rice husk direct combustion coproduction carbonization rice husk device that the present invention proposes, the air compartment oxygen concn accurate and adjustable that the burner low level is arranged, a settling chamber high position is arranged, the rear arch outlet is lower than settling chamber outlet, gas distribution device.Its special working mechanism is: above configuration makes that rice husk in the settling chamber can stable ignition and realize the high-intensity combustion of fugitive constituent, and the carbonization bed not only can reach abundant carbonization but also can control the burn-off rate of fixed carbon.The dominant mechanism that reaches above effect is: the red-hot air-flow of rear arch outlet is deep into settling chamber under the promotion of secondary air; Make the rice husk thermal decomposition of settling chamber and the burning of fugitive constituent not to rely on grate as thermal source; The red-hot air-flow of this strand cooperates with the air upflow of burner, can also reach to delay the rice husk sedimentation and improve the inhomogeneity effect of sedimentation; Owing to removed stacking bed ignition function, only kept single carbonization function, so the stacking bed grate from routine of the rice husk that the present invention provides changes the carbonization bed into; Because rice husk has been accomplished sufficient pyrolysis in the settling chamber; The pyrolysis shrinking effect makes the tap density of rice husk increase more than one times; The thickness that then is deposited to the rice husk layer on the carbonization bed reduces significantly; The accumulation homogeneity and the stability of carbonization bed have significantly been improved, for carbonization process has been prepared good condition; The carbonization bed can stably be produced carbonization rice husk under the condition of accurately distribution, owing to the flow and the oxygen concn of distribution all can accurately be regulated, so satisfied the condition of the online accurate adjusting of carbonization rice husk carbon content.
Facing the performance characteristics and the operating method of the rice husk direct combustion coproduction carbonization rice husk device of the present invention's proposition down does further to describe: system comprises feeding fan frequency transformer, overfire air fan frequency transformer, fan frequency transformer and cold smoke fan frequency converter; The gas concentration lwevel transmitter that also comprises feeding machine buncher, traveling-grate stoker buncher, furnace outlet TP, steam boiler pressure transmitter, furnace exhaust flue place; And principal controller, said principal controller is regulated said feeding machine rotating speed according to furnace outlet temperature and steam boiler pressure; Gas concentration lwevel and the frequency of feeding machine speed adjustment feeding fan frequency transformer, overfire air fan frequency transformer, fan frequency transformer and cold smoke fan frequency converter and the rotating speed of traveling-grate stoker buncher according to furnace exhaust flue place.
According to above-mentioned steering logic; Variation (regarding outer disturbing as) along with boiler load or fuel characteristic; The rice husk feed rate of rice husk firing system is at first made online response; The operation airshed and the operating parameterss such as oxygen amount, traveling-grate stoker speed of required air quantity, carbonization bed of burning are made online response to the rice husk feed rate, and above-mentioned response is all open loop control, comparatively coarse and easy drift of sharpness of regulation.Be provided with two closed-loop control links as accurate adjustment, be respectively furnace outlet temperature and smoke evacuation gas concentration lwevel for this reason, and the former inline diagnosis goes out actual combustion temperature at that time, and latter's inline diagnosis goes out actual excess air ratio at that time.Above technical measures can fully guarantee the stable burning of boiler, and the carbonization rice husk of the given carbon content of stable output.
Owing to adopted above structure, the present invention has following beneficial effect:
The present invention has accomplished the burning and the carbonization of rice husk simultaneously, and carbonization rice husk is a rice husk incendiary sub product, and the carbon content of carbonization rice husk can be regulated according to the requirement of downstream user, and device can reach steady running in actual production.
Description of drawings
Fig. 1 is a rice husk direct combustion coproduction carbonization rice husk schematic representation of apparatus of the present invention.
Fig. 2 is the gas distributing system synoptic diagram of rice husk direct combustion coproduction carbonization rice husk device of the present invention.
Fig. 3 is the system synoptic diagram of rice husk direct combustion coproduction carbonization rice husk device of the present invention.
Among the figure: 1. feeding machine, 2. material blanking tube, 3. feeding fan, 4. burner, 5. settling chamber, 6. air locking device; 7. traveling-grate stoker, 8. rear arch, 9. mucking machine, 10. overfire air port, 11. carbonization beds, 12. overfire air fans; 13. air compartment, 14. gas distribution devices, 15. fans, 16. cold smoke blower fans, 17. steam blower fans, 18. cold smoke pipelines; 19. the furnace exhaust flue, 20. cold smoke oxygen amount adjustment doors, 21. steam boilers, 22. adjustment doors, 23. decompression valves; 24. the feeding fan frequency transformer, 25. overfire air fan frequency transformers, 26. fan frequency transformers, 27. cold smoke fan frequency converters, 28. feeding machine bunchers; 29. the traveling-grate stoker buncher, 30. furnace outlet TPs, 31. steam boiler pressure transmitters, 32. gas concentration lwevel transmitters, 33. principal controllers;
131. first air compartment, 132. second air compartments, 133. the 3rd air compartments, 134. the 4th air compartments, tendencies chambers 135..
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, Fig. 2 and Fig. 3; A kind of rice husk direct combustion coproduction carbonization rice husk device; Comprise that entire infrastructure or part-structure are installed on rice husk suspending pyrogenation sedimenting system, carbonization bed system, gas distributing system, the system in the burner hearth; It is characterized in that said rice husk suspending pyrogenation sedimenting system is for accomplishing rice husk charging and pyrolytic operate portions, said gas distributing system is the operate portions of air oxygen level in the conditioning equipment burner hearth; Said carbonization bed system is the operate portions that rice husk is piled up carbonization, the operate portions of said system for monitoring interior temperature of burner hearth and air oxygen level and regulating and control.
Described rice husk suspending pyrogenation sedimenting system comprises feeding machine 1, material blanking tube 2, feeding fan 3, burner 4, settling chamber 5; Said feeding machine 1, material blanking tube 2 connect in order; In rice husk mass transport to said settling chamber 5; Said feeding fan 3 is arranged at the upstream position of said burner 4, and said burner 4 spray combustion directions are towards said settling chamber 5.Burner 4 and settling chamber 5 are arranged on the front portion of burner hearth, and described burner 4 is processed by heat-resisting oxidation-resistance steel (such as 310S), are installed in side-lower in the burner hearth front wall, and burner 4 emission directions are for vertically upward, and gas grain mixture is close to front wall and is upwards flowed.Described settling chamber 5 is n shape structures, is positioned at the face arch position of burner hearth, is constructed by refractory materials to form.Be provided with air locking device 6 between feeding machine 1 and the material blanking tube 2.
Said carbonization bed system comprises traveling-grate stoker 7, rear arch 8, mucking machine 9 and overfire air port 10; Said traveling-grate stoker 7 is arranged at the downstream position of said settling chamber 5; And be arranged at said rear arch 8 belows, pile up the carbonization bed 11 that forms by the rice husk from rice husk suspending pyrogenation sedimenting system on the traveling-grate stoker 7, said mucking machine 9 is arranged at said traveling-grate stoker 7 downstream positions; Said overfire air port 10 is arranged at the tail end of said burner hearth, and said overfire air port 10 is connected with overfire air fan 12.Rear arch 8 is level arch, settling chamber 5 go out the open height that goes out that open height is higher than rear arch 8.Overfire air port 10 is direct current spouts, is arranged on the back wall of burner hearth, and its height location is below rear arch 8 arch faces, and jet direction is parallel with the rear arch arch face.
Said gas distributing system comprises the gas distribution device 14 that is installed in the said traveling-grate stoker 7; Said gas distribution device 14 comprises some air compartments 13; Said some air compartments all are connected with fan 15, cold smoke blower fan 16, steam blower fan 17; Adopt air, cold smoke, steam three channel gas source, the oxygen amount is carried out coarse adjustment, the oxygen amount is carried out accurate adjustment by steam by cold smoke; Said cold smoke blower fan 16 utilizes cold smoke pipeline 18 to be communicated with furnace exhaust flue 19, and said cold smoke pipeline 18 is provided with cold smoke oxygen amount adjustment doors 20; Said steam blower fan 17 connects steam boiler 21.In each air compartment 13 of gas distribution device 14, the oxygen concentration of operation gas descends from front to back successively.Said fan 15, cold smoke blower fan 16 are provided with adjustment doors 22.Steam blower fan 17 is provided with decompression valve 23.
Said system comprises feeding fan frequency transformer 24, overfire air fan frequency transformer 25, fan frequency transformer 26 and cold smoke fan frequency converter 27; The gas concentration lwevel transmitter 32 that also comprises feeding machine buncher 28, traveling-grate stoker buncher 29, furnace outlet TP 30, steam boiler pressure transmitter 31, furnace exhaust flue place; And principal controller 33, said principal controller 33 is regulated said feeding machine buncher 28 rotating speeds according to furnace outlet temperature and steam boiler pressure; According to the gas concentration lwevel at furnace exhaust flue 19 places and feeding machine buncher 28 speed adjustment feeding fan frequency transformers 24, overfire air fan frequency transformer 25, fan frequency transformer 26 and the frequency of cold smoke fan frequency converter 27 and the rotating speed of traveling-grate stoker buncher 29.
The low-pressure saturated steam boiler that is 10t/h with a steam output below is an example, the rice husk direct combustion coproduction carbonization rice husk device that the present invention proposes, and parameter configuration is following:
(1) feeding machine 1: worm conveyor, maximum transmission capacity 45m
3/ h, buncher drives;
(2) air locking device 6: star-like air sealer, transport capacity 50m
3/ h, electric motor driving, not speed governing;
(3) feeding fan 3: centrifugal blower, flow 5000m
3/ h, pressure head 2kPa, speed control by frequency variation;
(4) burner 4: wind speed 15 ~ 25 m/s, and wind speed is regulated the speed control by frequency variation that relies on feeding fan;
(5) settling chamber 5:H
1=2.0, H
2=1.2 m, L
1=1.5m, fire-resistant masonry construction;
(6) traveling-grate stoker 7: useful length 6m, and effective width 2m, scale chain grate, buncher drives;
(7) rear arch 8:L
2=1.5m, H
3=0.6 m, fire-resistant masonry construction;
(8) overfire air fan 12: centrifugal blower, flow 4000m
3/ h, pressure head 3kPa, speed control by frequency variation;
(9) overfire air port 10: wind speed 40 m/s, and wind speed is regulated the speed control by frequency variation that relies on feeding fan;
(10) fan 15: centrifugal blower, flow 2500m
3/ h, pressure head 2kPa, speed control by frequency variation;
(11) the cold smoke blower fan 16: centrifugal blower, flow 2500m
3/ h, pressure head 3kPa, speed control by frequency variation;
(12) decompression valve 23: MCR steam flow 500kg/h;
(13) 14: five independent air compartments 13 of gas distribution device, double-faced ventilated, internal structure is identical with the conventional oven exhaust air box;
(14) mucking machine 9: embedded scraper transporter, transport capacity 15m
3/ h;
(15) adjustment doors 22: every road airflow inlet of air compartment is provided with one, totally 15.
The flow process of the rice husk motion of this rice husk direct combustion coproduction carbonization rice husk device is: feeding machine 1 → air locking device 6 → material blanking tube 2 → burner 4 → settling chamber 5 → carbonization bed 11 → mucking machine 9; The air-flow flow process is: ambient air is sent into burner 4, overfire air port 10 and gas distribution device 14 respectively through feeding fan 3, overfire air fan 12 and fan 15; Cold flue gas from furnace exhaust flue 19 is sent into gas distribution device 14 through cold smoke blower fan 16; Saturation steam from steam boiler 21 is sent into gas distribution device 14 through decompression valve 23; All get into boiler furnace with overdraught, accomplishing combustion processes becomes flue gas afterwards, discharges from the smoke outlet of boiler at last.
Under the rated load condition, the logistics parameter of this rice husk direct combustion coproduction carbonization rice husk device is following: rice husk feeding coal 35m
3/ h, feeding air quantity 4000m
3/ h, secondary air flow 3250m
3/ h, fan air quantity 1750m
3/ h, cold smoke amount 2000m
3/ h, reduced steam flow 400kg/h.
Under the rated load condition, the distribution parameter of 14 5 air compartments 13 of gas distribution device is followed successively by: the fan air quantity 1000m of first air compartment 131
3/ h, cold smoke amount 0m
3/ h, steam flow 0kg/h; The fan air quantity 500m of second air compartment 132
3/ h, cold smoke 1000m
3/ h, steam flow 0kg/h; The fan air quantity 250m of the 3rd air compartment 133
3/ h, cold smoke amount 1500m
3/ h, steam flow 50kg/h; The fan air quantity 0m of the 4th air compartment 134
3/ h, cold smoke amount 500m
3/ h, steam flow 50kg/h; The fan air quantity 0m of tendencies chamber 135
3/ h, cold smoke amount 500m
3/ h, steam flow 300kg/h.
Under the rated load condition, when adjusting traveling-grate stoker 7 movement velocitys into 15m/h, the mean thickness of carbonization bed 11 is about 350 mm, and in carbonization bed 11, the mean residence time of rice husk is about 20 minutes, and average carbonization temperature is about 950 ℃.It is thus clear that, this rice husk direct combustion coproduction carbonization rice husk device, the rice husk carbonization condition of setting is extremely superior.Because regulating measure is abundant; So this rice husk direct combustion coproduction carbonization rice husk device; When fluctuation takes place parameters such as rice husk kind, rice husk water ratio, boiler load, all can stably produce the carbonization rice husk of specifying carbon content, the carbon content of carbonization rice husk accurate and adjustable between 30～48%.
Need to prove that especially the rice husk direct combustion coproduction carbonization rice husk device that the present invention proposes is not if the user need produce carbonization rice husk; Then can be simply through strengthening the fan capacity; And inactive cold smoke and reduced steam, just can realize the efficient burning of rice husk, the carbon content of rice hull ash can be controlled at below 5%; Suitable with the ash content carbon of reciprocal grate, the flying dust share will be well below reciprocal grate.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The scope of the claimed invention by the appended claims and their equivalents defined
.
Claims (10)
1. rice husk direct combustion coproduction carbonization rice husk device; Comprise that entire infrastructure or part-structure are installed on rice husk suspending pyrogenation sedimenting system, carbonization bed system, gas distributing system, the system in the burner hearth; It is characterized in that: said rice husk suspending pyrogenation sedimenting system is for accomplishing rice husk charging and pyrolytic operate portions; Said gas distributing system is the operate portions of air oxygen level in the conditioning equipment burner hearth; Said carbonization bed system is the operate portions that rice husk is piled up carbonization, the operate portions of said system for monitoring interior temperature of burner hearth and air oxygen level and regulating and control.
2. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 1; It is characterized in that: described rice husk suspending pyrogenation sedimenting system comprises feeding machine, material blanking tube, feeding fan, burner, settling chamber; Said feeding machine, material blanking tube connect in order; In rice husk mass transport to said settling chamber, said feeding fan is arranged at the upstream position of said burner, and said burner spray combustion direction is towards said settling chamber.
3. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 2 is characterized in that: be provided with air locking device between feeding machine and the material blanking tube.
4. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 1; It is characterized in that: said carbonization bed system comprises traveling-grate stoker, rear arch, mucking machine and overfire air port; Said traveling-grate stoker is arranged at the downstream position of said settling chamber; And be arranged at said rear arch below, pile up the carbonization bed that forms by the rice husk from rice husk suspending pyrogenation sedimenting system on the traveling-grate stoker, said mucking machine is arranged at said traveling-grate stoker downstream position; Said overfire air port is arranged at the tail end of said burner hearth, and said overfire air port is connected with overfire air fan.
5. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 4, it is characterized in that: rear arch is a level arch, settling chamber go out the open height that goes out that open height is higher than rear arch.
6. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 4, it is characterized in that: overfire air port is a direct current spout, is arranged on the back wall of burner hearth, and its height location is below the rear arch arch face, and jet direction is parallel with the rear arch arch face.
7. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 1; It is characterized in that: said gas distributing system comprises the gas distribution device that is installed in the said traveling-grate stoker; Said gas distribution device comprises some air compartments, and said some air compartments all are connected with fan, cold smoke blower fan, steam blower fan, adopts air, cold smoke, steam three channel gas source; By cold smoke the oxygen amount is carried out coarse adjustment, the oxygen amount is carried out accurate adjustment by steam; Said cold smoke blower fan utilizes the cold smoke pipeline to be communicated with the furnace exhaust flue, and said cold smoke pipeline is provided with cold smoke oxygen amount adjustment doors; Said steam blower fan connects steam boiler.
8. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 7, it is characterized in that: said fan, cold smoke blower fan are provided with adjustment doors.
9. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 7, it is characterized in that: the steam blower fan is provided with decompression valve.
10. a kind of rice husk direct combustion coproduction carbonization rice husk device according to claim 1; It is characterized in that: said system comprises feeding fan frequency transformer, overfire air fan frequency transformer, fan frequency transformer and cold smoke fan frequency converter; The gas concentration lwevel transmitter that also comprises feeding machine buncher, traveling-grate stoker buncher, furnace outlet TP, steam boiler pressure transmitter, furnace exhaust flue place; And principal controller, said principal controller is regulated said feeding machine rotating speed according to furnace outlet temperature and steam boiler pressure; Gas concentration lwevel and the frequency of feeding machine speed adjustment feeding fan frequency transformer, overfire air fan frequency transformer, fan frequency transformer and cold smoke fan frequency converter and the rotating speed of traveling-grate stoker buncher according to furnace exhaust flue place.
Priority Applications (1)
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|---|---|---|---|
| CN2012102065389A CN102732276A (en) | 2012-06-21 | 2012-06-21 | Rice husk direct-combustion and carbonization combination apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102065389A CN102732276A (en) | 2012-06-21 | 2012-06-21 | Rice husk direct-combustion and carbonization combination apparatus |
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| CN102732276A true CN102732276A (en) | 2012-10-17 |
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ID=46988587
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|---|---|---|---|
| CN2012102065389A Pending CN102732276A (en) | 2012-06-21 | 2012-06-21 | Rice husk direct-combustion and carbonization combination apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591605A (en) * | 2013-11-30 | 2014-02-19 | 广州广重企业集团有限公司 | Combustion monitoring control system of waste wood fuel boiler using non-pre-treatment technology |
| CN104235833A (en) * | 2014-08-12 | 2014-12-24 | 吉林省瑞昊能源科技有限公司 | Transformed novel boiler for burning rice husk and method for producing thermal insulation covering agent by using novel boiler |
| CN107036075A (en) * | 2017-06-05 | 2017-08-11 | 海伦市利民节能锅炉制造有限公司 | A kind of biomass molding fuel gasification combustion device continuously run |
| CN112409639A (en) * | 2020-11-19 | 2021-02-26 | 云南博仁科技有限公司 | Preparation method of structural biomass silicon carbon pipe material |
| CN115449388A (en) * | 2022-09-07 | 2022-12-09 | 上海乐茗环保科技有限公司 | Pressure gas continuous biomass cracking carbonization reaction furnace |
| RU2796013C1 (en) * | 2022-06-09 | 2023-05-16 | Павлович Эдуард Геннадиевич | Device for processing the rice industry waste into amorphous silicon dioxide and amorphous carbon |
| US11708534B2 (en) | 2018-09-26 | 2023-07-25 | Plastic Energy Limited | Reactor assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003201482A (en) * | 2001-12-28 | 2003-07-18 | Mitsuwa:Kk | Chaff-carbonizing device |
| JP2006112687A (en) * | 2004-10-13 | 2006-04-27 | Takada Engineering:Kk | Multi-stage fluidized bed combustion method |
| CN101245250A (en) * | 2008-03-19 | 2008-08-20 | 北京林业大学 | Method for Comprehensive Utilization of Lignified Biomass Materials as Energy |
| CN101922729A (en) * | 2010-09-03 | 2010-12-22 | 阜新汇丰资源开发有限公司 | Layer combustion boiler for combusting bundled straw |
| CN102134496A (en) * | 2011-01-14 | 2011-07-27 | 大庆油田有限责任公司 | Solid fuel pneumatic conveying heating method and system capable of controlling content of ash combustible |
-
2012
- 2012-06-21 CN CN2012102065389A patent/CN102732276A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003201482A (en) * | 2001-12-28 | 2003-07-18 | Mitsuwa:Kk | Chaff-carbonizing device |
| JP2006112687A (en) * | 2004-10-13 | 2006-04-27 | Takada Engineering:Kk | Multi-stage fluidized bed combustion method |
| CN101245250A (en) * | 2008-03-19 | 2008-08-20 | 北京林业大学 | Method for Comprehensive Utilization of Lignified Biomass Materials as Energy |
| CN101922729A (en) * | 2010-09-03 | 2010-12-22 | 阜新汇丰资源开发有限公司 | Layer combustion boiler for combusting bundled straw |
| CN102134496A (en) * | 2011-01-14 | 2011-07-27 | 大庆油田有限责任公司 | Solid fuel pneumatic conveying heating method and system capable of controlling content of ash combustible |
Cited By (12)
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|---|---|---|---|---|
| CN103591605A (en) * | 2013-11-30 | 2014-02-19 | 广州广重企业集团有限公司 | Combustion monitoring control system of waste wood fuel boiler using non-pre-treatment technology |
| CN103591605B (en) * | 2013-11-30 | 2016-06-08 | 广州广重企业集团有限公司 | A kind of combustion monitoring Controlling System without pretreatment technology waste wood fuel boiler |
| CN104235833A (en) * | 2014-08-12 | 2014-12-24 | 吉林省瑞昊能源科技有限公司 | Transformed novel boiler for burning rice husk and method for producing thermal insulation covering agent by using novel boiler |
| CN104235833B (en) * | 2014-08-12 | 2017-02-15 | 吉林省瑞昊能源科技有限公司 | Transformed boiler for burning rice husk and method for producing thermal insulation covering agent by using boiler |
| CN107036075A (en) * | 2017-06-05 | 2017-08-11 | 海伦市利民节能锅炉制造有限公司 | A kind of biomass molding fuel gasification combustion device continuously run |
| CN107036075B (en) * | 2017-06-05 | 2023-04-18 | 海伦市利民节能锅炉制造有限公司 | Biomass briquette gasification burner capable of continuously running |
| CN107036075B9 (en) * | 2017-06-05 | 2023-05-30 | 海伦市利民节能锅炉制造有限公司 | Continuously-running biomass briquette gasification burner |
| US11708534B2 (en) | 2018-09-26 | 2023-07-25 | Plastic Energy Limited | Reactor assembly |
| CN112409639A (en) * | 2020-11-19 | 2021-02-26 | 云南博仁科技有限公司 | Preparation method of structural biomass silicon carbon pipe material |
| RU2796013C1 (en) * | 2022-06-09 | 2023-05-16 | Павлович Эдуард Геннадиевич | Device for processing the rice industry waste into amorphous silicon dioxide and amorphous carbon |
| CN115449388A (en) * | 2022-09-07 | 2022-12-09 | 上海乐茗环保科技有限公司 | Pressure gas continuous biomass cracking carbonization reaction furnace |
| CN115449388B (en) * | 2022-09-07 | 2024-04-26 | 上海乐茗环保科技有限公司 | Pressure gas continuous biomass pyrolysis carbonization reaction furnace |
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Application publication date: 20121017 |