CN202519313U - Boiler for refining vanadium pentoxide by decarburization and roasting technology - Google Patents
Boiler for refining vanadium pentoxide by decarburization and roasting technology Download PDFInfo
- Publication number
- CN202519313U CN202519313U CN2012201779993U CN201220177999U CN202519313U CN 202519313 U CN202519313 U CN 202519313U CN 2012201779993 U CN2012201779993 U CN 2012201779993U CN 201220177999 U CN201220177999 U CN 201220177999U CN 202519313 U CN202519313 U CN 202519313U
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- burner hearth
- temperature
- roasting
- roasting chamber
- flue
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model discloses a boiler for refining vanadium pentoxide by a decarburization and roasting technology. The boiler comprises a limestone storage bin (1), a vanadium stone coal bunker (2), a hearth (3), a high-temperature separator (5) and a flue (7), wherein a roasting chamber (6) is arranged under the high-temperature separator (5), and is internally provided with a roasting device (18) used for directly roasting decarburization slag of high-temperature powdered vanadium stone coal falling down from the high-temperature separator (5); a material discharge hole (17) is arranged under the roasting chamber (6); the roasting device (18) is sequentially connected with a gas source control device (15) and a pressure gas source (14) which is pressure common air and/ or pressure oxygen-rich air; and the roasting chamber (6) can be arranged in parallel, or the hearth (3) is arranged in parallel. The boiler has the advantages of being simple and reasonable in structure, saving energy, improving the production efficiency and vanadium conversion rate and remarkably reducing the production cost.
Description
Technical field
The utility model relates to a kind of boiler that is used to refine Vanadium Pentoxide in FLAKES decarburization and sinter process.
Background technology
Be used to refine the device of Vanadium Pentoxide in FLAKES decarbonization process at present; Be fluidizing furnace or the circular fluid bed of using always; After the cooling of decarburization material that boiler ejects, be equipped with a certain proportion of raw ore and/or additive again and get into calciners such as rotary kiln, shaft kiln, flat kiln, tunnel kiln with normal temperature and carry out roasting.Its weak point: the roasting that heats up again after the decarburization material cooling that preceding operation device such as boiler eject, heat energy consumption is big, and the production cycle is long, and production efficiency is low, and production cost is low, and the turnover ratio of vanadium is low.
The utility model content
The purpose of the utility model is to overcome deficiency of the prior art, and a kind of boiler that is used to refine Vanadium Pentoxide in FLAKES decarburization and sinter process that directly utilizes high temperature decarburization material, that can save the energy, the turnover ratio that can improve vanadium of decarbonization process device such as boiler is provided.Decarburization and calcining process are accomplished in a set of equipment.
The purpose of the utility model is achieved through following technical proposals: comprise the Wingdale feed bin, contain scherbinaite coal charge storehouse, burner hearth, high-temperature separator and flue; The below of said high-temperature separator is provided with the roasting chamber; The calciner of the decarbonized slag that contains the scherbinaite coal of the high temperature powder shape that installation can direct roasting falls from high-temperature separator in the said roasting chamber, its below is provided with material outlet; Said calciner be linked in sequence control air source equipment with pressurized air source arranged; Said have pressurized air source for the normal air of pressure being arranged and/or the pressure oxygen rich gas being arranged.
Said calciner comprise at least one group be installed in the roasting chamber, the band gas orifice or/and the band air nozzle pipeline.
Install on the said flue and can the gas that pressurized air source is arranged got into calciner before by the source of the gas heating unit of the heating of the high-temperature flue gas in the flue.
Device or the passage that can high temperature or normal temperature decarbonized slag be sent into the roasting chamber are set between the slag notch of said burner hearth and the roasting chamber.
The purpose of the utility model can also be achieved through following technical proposals: comprise the Wingdale feed bin, contain scherbinaite coal charge storehouse, burner hearth, high-temperature separator and flue; Between said burner hearth and the high-temperature separator roasting chamber is set, the partition wall of curtain falling type is installed at the top of roasting chamber; The calciner of the decarbonized slag that contains the scherbinaite coal of the high temperature powder shape that installation can direct roasting falls from high-temperature separator in the said roasting chamber, its below is provided with material outlet; Said calciner be linked in sequence control air source equipment with pressurized air source arranged; Said have pressurized air source for the normal air of pressure being arranged and/or the pressure oxygen rich gas being arranged.
Said calciner comprise at least one group be installed in the roasting chamber, the band gas orifice or/and the band air nozzle pipeline.
Install on the said flue and can the gas that pressurized air source is arranged got into calciner before by the source of the gas heating unit of the heating of the high-temperature flue gas in the flue.
Device or the passage that can high temperature or normal temperature decarbonized slag be sent into the roasting chamber are set between the slag notch of said burner hearth and the roasting chamber.
The purpose of the utility model can also be achieved through following technical proposals: comprise the Wingdale feed bin, contain scherbinaite coal charge storehouse, burner hearth, high-temperature separator and flue; Said burner hearth is at least two, and order is notch cuttype and arranges; First burner hearth disposes Wingdale feed bin and contains scherbinaite coal charge storehouse; Since second burner hearth, its opening for feed is connected with the discharge port of previous burner hearth, and its discharge port is connected with the opening for feed of a back burner hearth; High-temperature separator of each burner hearth separate connection; The below of high-temperature separator is provided with the passage that can the decarbonized slag that contain the scherbinaite coal of high temperature powder shape be sent back to burner hearth at the corresponding levels; Single burner hearth and high-temperature separator thereof constitute local circulation fluosolids roasting device; A plurality of burner hearth series connection constitute multistage fluosolids roasting device.
The lower furnace portion taper fluidisation part of chatting, its height is 1.5-5 times with the diameter ratio of small end.
Compared with prior art, the utlity model has following advantage: simple and reasonable, can save the energy, enhance productivity and the vanadium turnover ratio, can significantly reduce production costs.
Description of drawings
Fig. 1 is the utility model first example structure synoptic diagram.
Fig. 2 is the utility model second example structure synoptic diagram.
Fig. 3 the utility model the 3rd example structure synoptic diagram.
Fig. 4 overlooks the structure for amplifying synoptic diagram for Fig. 3's.
Among the figure: 1-Wingdale feed bin, 2-contain scherbinaite coal charge storehouse, 3-burner hearth, 4-bubble, 5-high-temperature separator, 6-roasting chamber; The 7-flue, 8-boiler air intake well heater, 9-overfire air fan, 10-primary air fan, 11-chimney, 12-electric precipitator; The 13-induced draft fan, 14-has pressurized air source, 15-control air source equipment, 16-source of the gas heating unit, 17-material outlet, 18-calciner; Wind of 19-is responsible for air compartment of 20-, 21-slag notch, 22-partition wall, 23-valve.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Technical scheme one is referring to Fig. 1: comprise Wingdale feed bin 1, contain scherbinaite coal charge storehouse 2, burner hearth 3, high-temperature separator 5 and flue 7; The below of said high-temperature separator 5 is provided with roasting chamber 6; The calciner 18 of the decarbonized slag that contains the scherbinaite coal of the high temperature powder shape that installations can direct roasting fall from high-temperature separator 5 in the said roasting chamber 6, its below is provided with material outlet 17; Said calciner 18 be linked in sequence control air source equipment 15 with pressurized air source 14 is arranged; Said have pressurized air source 14 for the normal air of pressure being arranged and/or the pressure oxygen rich gas being arranged.
Said calciner 18 comprise at least one group be installed in roasting chamber 6, the band gas orifice or/and the band air nozzle pipeline.
Install on the said flue 7 and can the gas that pressurized air source 14 is arranged got into calciner 18 before by the source of the gas heating unit 16 of the heating of the high-temperature flue gas in the flue 7.
Device or the passage that can high temperature or normal temperature decarbonized slag be sent into roasting chamber 6 are set between the slag notch 21 of said burner hearth 3 and the roasting chamber 6.Described device or passage adopt known technology to make.
In present technique scheme shown in Figure 1, some proven technique of conventional fluidized-bed have been adopted: as between the inlet of the top of burner hearth 3 and flue 7, bubble 4 being set; Burner hearth 3 is provided with primary air fan 10 and overfire air fan 9, and the wind regime of primary air fan 10 and overfire air fan 9 is through 8 heating of boiler air intake well heater, and boiler air intake well heater 8 is installed on the flue 7; Flue 7 back orders are installed electric precipitator 12, induced draft fan 13 and chimney 11.A wind is responsible for an air compartment 20 of the bottom of 19 connection burner hearths 3.
Technical scheme two is referring to Fig. 2: comprise Wingdale feed bin 1, contain scherbinaite coal charge storehouse 2, burner hearth 3, high-temperature separator 5 and flue 7; Between said burner hearth 3 and the high-temperature separator 5 roasting chamber 6 is set, the partition wall 22 of curtain falling type is installed at the top of roasting chamber 6; The calciner 18 of the decarbonized slag that contains the scherbinaite coal of the high temperature powder shape that installations can direct roasting fall from high-temperature separator 5 in the said roasting chamber 6, its below is provided with material outlet 17; Said calciner 18 be linked in sequence control air source equipment 15 with pressurized air source 14 is arranged; Said have pressurized air source 14 for the normal air of pressure being arranged and/or the pressure oxygen rich gas being arranged.
Said calciner 18 comprise at least one group be installed in roasting chamber 6, the band gas orifice or/and the band air nozzle pipeline.
Install on the said flue 7 and can the gas that pressurized air source 14 is arranged got into calciner 18 before by the source of the gas heating unit 16 of the heating of the high-temperature flue gas in the flue 7.
Device or the passage that can high temperature or normal temperature decarbonized slag be sent into roasting chamber 6 are set between the slag notch 21 of said burner hearth 3 and the roasting chamber 6.
In technical scheme shown in Figure 2, omit other parts of Fig. 1, therefore the main part of only having drawn, has still adopted some proven technique of conventional fluidized-bed: as between the inlet of the top of burner hearth 3 and flue 7, bubble 4 being set in the present technique scheme; Burner hearth 3 is provided with primary air fan 10 and overfire air fan 9, and the wind regime of primary air fan 10 and overfire air fan 9 is through 8 heating of boiler air intake well heater, and boiler air intake well heater 8 is installed on the flue 7; Flue 7 back orders are installed electric precipitator 12, induced draft fan 13 and chimney 11.A wind is responsible for an air compartment 20 of the bottom of 19 connection burner hearths 3.
Technical scheme three is referring to Fig. 3-4: comprise Wingdale feed bin 1, contain scherbinaite coal charge storehouse 2, burner hearth 3, high-temperature separator 5 and flue 7; Said burner hearth 3 is at least two, and order is notch cuttype and arranges; First burner hearth 3 disposes Wingdale feed bins 1 and contains scherbinaite coal charge storehouse 2; Since second burner hearth 3, its opening for feed is connected with the discharge port of previous burner hearth 3, and its discharge port is connected with the opening for feed of a back burner hearth 3; High-temperature separator 5 of each burner hearth 3 separate connection; The below of high-temperature separator 5 is provided with the passage that can the decarbonized slag that contain the scherbinaite coal of high temperature powder shape be sent back to burner hearth 3 at the corresponding levels; Single burner hearth 3 and high-temperature separator 5 thereof constitute local circulation fluosolids roasting device; A plurality of burner hearth 3 series connection constitute multistage fluosolids roasting device.
The institute's burner hearth of chatting 3 lower taper fluidisation parts, its height is 1.5-5 times with the diameter ratio of small end.
In the technical scheme shown in Fig. 3-4, omit other parts of Fig. 1, therefore the main part of only having drawn, has still adopted some proven technique of conventional fluidized-bed: as between the inlet of the top of burner hearth 3 and flue 7, bubble 4 being set in the present technique scheme; Burner hearth 3 is provided with primary air fan 10 and overfire air fan 9, and the wind regime of primary air fan 10 and overfire air fan 9 is through 8 heating of boiler air intake well heater, and boiler air intake well heater 8 is installed on the flue 7; Flue 7 back orders are installed electric precipitator 12, induced draft fan 13 and chimney 11.A wind is responsible for an air compartment 20 of the bottom of 19 connection burner hearths 3.
Embodiment 1:
Containing the scherbinaite calorific value of coal is 850 kilocalorie/kilograms, is the broken material below the granularity 4mm with crushing raw ore, adopts shown in figure one circular fluid bed as its decarburization calciner.It is 20 tons that boiler per hour produces the lime-ash total amount.When following, about 70% fine particle can get into roasting chamber 6 from high-temperature separator to crushing raw ore to particle diameter 4mm; Decarbonized slag abrasive dust after cooling off of discharging from slag notch becomes the powder below 40 orders, feeds the sealed feeder unit that is provided with in the roasting chamber 6 and gets into roasting chamber 6.Sealed feeder unit adopts known technology.
Roasting chamber's 6 useful volumes are 60 cubic metres, and the pipeline of two groups of band gas orifices is set.First group is arranged in the useful volume first half, and pipeline runs through roasting chamber's inner chamber, the layering horizontal arrangement; 25 centimetres of every layer of width between centers are with 20 centimetres of layer pipeline clear spacings.Every spacing is 10 centimetres on the same pipeline, its two side with below the gas orifice of 2 millimeters of three diameters is set altogether.
Second group is arranged in the useful volume Lower Half, and decoration form is similar, be every layer of width between centers be 40 centimetres, with 30 centimetres of layer pipeline clear spacings.After high-temperature material got into roasting chamber 6, first group of pipeline promptly sprayed into air by the tolerance of processing requirement in material, make the further decarburization of material, and keeps temperature of charge at 850-870 degree Celsius.After observing material and fill up the half the useful volume in 6 bottoms, roasting chamber through the material level viewer, promptly in material, spray into the oxygen rich gas of oxygen level 40%, and the maturing temperature of control material is at 850-870 degree Celsius by the tolerance of processing requirement through second group of tracheae.
After observing the useful volume that material fills up roasting chamber 6 through another material level viewer, open the blow-off valve that is provided with on the discharge port 17, with the speed discharge identical with charging.At this moment material roasting nearly three hours.
Embodiment 2:
Basic identical with embodiment one, just roasting chamber 6 is arranged between burner hearth 3 and the high-temperature separator 5, and increases length downwards, makes the high-temperature material of discharging from burner hearth 3 slag notches to get into roasting chamber 6 through the direct high temperature of revert pipe.Its useful volume is that roasting chamber's 6 internal furnaces, 3 revert pipe imports are with the lower section.
Embodiment 3:
Whole boiler has 4 grades of burner hearths 3, and every grade of chamber structure is basic identical, and the siege diameter is 4 meters, 16 meters of its taper fluidisation regions perpendicular height, tapering 0.25.Bed material thickness 1.5-2.5 rice.
Before material got into and contains scherbinaite coal charge storehouse 2, first abrasive dust was processed granularity less than 60 purpose powders.After powder got into burner hearth 3, the regulating and controlling primary air flow made most of bed material to rest on burner hearth 3 interior 30 minutes with fluidized state, gets into next stage burner hearth 3 through slag notch again.
Every grade of burner hearth 3 disposes independently High Temperature Gas solid separator 5 and a secondary air air feed system; Isolated material returns corresponding burner hearth 3; The valve 23 of install adjustment exhaust gas volumn on the separator 5 high-temperature flue gas exit passageways; Cooperate with a wind of burner hearths 3 at different levels, regulate air quantity and wind speed in the burner hearths 3 at different levels;
Upper level burner hearth 3 slag notches are connected with next stage burner hearth 3 opening for feeds through the material transfer pipe, the high temperature meal of upper level burner hearth 3 and the high temperature fine powder that returns burner hearth 3 from separator 5 through slag notch through direct high temperature entering next stage burner hearth 3 emulsion zones of material transfer pipe and zone of transition junction or more on the lower side.
Regulate primary air flow and wind-warm syndrome; Reduce secondary air flow, directly cause and stop secondary air; Make the bed material in upper level burner hearth 3 internal combustion and insufficient, get into the temperature that next stage burner hearth 3 still has enough thermal values, combines primary and secondary air, keep the maturing temperature of 800-900 degree Celsius in the burner hearth 3.First step burner hearth 3 primary and secondary air be preheating to Celsius 200 the degree more than, second and third, level Four burner hearth 3 primary and secondary air be preheating to Celsius 400 the degree more than.
Material is through 4 grades of burner hearth 3 fluosolids roastings, and total roasting time 120 minutes gets into next process after fourth stage burner hearth 3 is slagged tap cooling.
Claims (10)
1. boiler that is used to refine Vanadium Pentoxide in FLAKES decarburization and sinter process comprises Wingdale feed bin (1), contains scherbinaite coal charge storehouse (2), burner hearth (3), high-temperature separator (5) and flue (7); It is characterized in that: the below of said high-temperature separator (5) is provided with roasting chamber (6); The calciner (18) of the decarbonized slag that contains the scherbinaite coal of the high temperature powder shape that the interior installation in said roasting chamber (6) can direct roasting falls from high-temperature separator (5), its below is provided with material outlet (17); Be linked in sequence control air source equipment (15) and pressurized air source (14) is arranged of said calciner (18); Said have pressurized air source (14) for the normal air of pressure being arranged and/or the pressure oxygen rich gas being arranged.
2. boiler according to claim 1 is characterized in that: said calciner (18) comprise at least one group be installed in roasting chamber (6), the band gas orifice or/and the band air nozzle pipeline.
3. boiler according to claim 1 and 2 is characterized in that: said flue (7) is gone up installation can get into calciner (18) before by the source of the gas heating unit (16) of the heating of the high-temperature flue gas in the flue (7) with the gas that pressurized air source (14) is arranged.
4. boiler according to claim 1 and 2 is characterized in that: device or the passage that can high temperature or normal temperature decarbonized slag be sent into roasting chamber (6) are set between the slag notch (21) of said burner hearth (3) and roasting chamber (6).
5. boiler that is used to refine Vanadium Pentoxide in FLAKES decarburization and sinter process comprises Wingdale feed bin (1), contains scherbinaite coal charge storehouse (2), burner hearth (3), high-temperature separator (5) and flue (7); It is characterized in that: between said burner hearth (3) and the high-temperature separator (5) roasting chamber (6) is set, the partition wall (22) of curtain falling type is installed at the top of roasting chamber (6); The calciner (18) of the decarbonized slag that contains the scherbinaite coal of the high temperature powder shape that the interior installation in said roasting chamber (6) can direct roasting falls from high-temperature separator (5), its below is provided with material outlet (17); Be linked in sequence control air source equipment (15) and pressurized air source (14) is arranged of said calciner (18); Said have pressurized air source (14) for the normal air of pressure being arranged and/or the pressure oxygen rich gas being arranged.
6. boiler according to claim 4 is characterized in that: said calciner (18) comprise at least one group be installed in roasting chamber (6), the band gas orifice or/and the band air nozzle pipeline.
7. according to claim 4 or 5 described boilers, it is characterized in that: said flue (7) is gone up installation can get into calciner (18) before by the source of the gas heating unit (16) of the heating of the high-temperature flue gas in the flue (7) with the gas that pressurized air source (14) is arranged.
8. according to claim 4 or 5 described boilers, it is characterized in that: device or the passage that can high temperature or normal temperature decarbonized slag be sent into roasting chamber (6) are set between the slag notch (21) of said burner hearth (3) and roasting chamber (6).
9. boiler that is used to refine Vanadium Pentoxide in FLAKES decarburization and sinter process comprises Wingdale feed bin (1), contains scherbinaite coal charge storehouse (2), burner hearth (3), high-temperature separator (5) and flue (7); It is characterized in that: said burner hearth (3) is at least two, and order is notch cuttype and arranges; First burner hearth (3) disposes Wingdale feed bin (1) and contains scherbinaite coal charge storehouse (2); Since second burner hearth (3), its opening for feed is connected with the discharge port of previous burner hearth (3), and its discharge port is connected with the opening for feed of a back burner hearth (3); Each burner hearth (3) high-temperature separator of separate connection (5); The below of high-temperature separator (5) is provided with the passage that can the decarbonized slag that contain the scherbinaite coal of high temperature powder shape be sent back to burner hearth at the corresponding levels (3); Single burner hearth (3) and high-temperature separator (5) thereof constitute local circulation fluosolids roasting device; A plurality of burner hearths (3) series connection constitutes multistage fluosolids roasting device.
10. boiler according to claim 7 is characterized in that: said burner hearth (3) lower taper fluidisation part, its height is 1.5-5 times with the diameter ratio of small end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201779993U CN202519313U (en) | 2012-04-25 | 2012-04-25 | Boiler for refining vanadium pentoxide by decarburization and roasting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201779993U CN202519313U (en) | 2012-04-25 | 2012-04-25 | Boiler for refining vanadium pentoxide by decarburization and roasting technology |
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| Publication Number | Publication Date |
|---|---|
| CN202519313U true CN202519313U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201779993U Expired - Lifetime CN202519313U (en) | 2012-04-25 | 2012-04-25 | Boiler for refining vanadium pentoxide by decarburization and roasting technology |
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| Country | Link |
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| CN (1) | CN202519313U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628098A (en) * | 2012-04-25 | 2012-08-08 | 彭武星 | Boiler with decarbonization and roasting processes for refining vanadium pentoxide |
| CN103276195A (en) * | 2013-05-08 | 2013-09-04 | 北京神雾环境能源科技集团股份有限公司 | Stone coal vanadium ore shaft roasting method and system |
| CN103966425A (en) * | 2013-01-28 | 2014-08-06 | 长沙高新开发区大沅能源科技有限公司 | Efficient vanadium smelting decarbonization calcination boiler |
| WO2020017372A1 (en) * | 2018-07-17 | 2020-01-23 | 株式会社ブルークロス | Garbage incineration facility |
-
2012
- 2012-04-25 CN CN2012201779993U patent/CN202519313U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628098A (en) * | 2012-04-25 | 2012-08-08 | 彭武星 | Boiler with decarbonization and roasting processes for refining vanadium pentoxide |
| CN103966425A (en) * | 2013-01-28 | 2014-08-06 | 长沙高新开发区大沅能源科技有限公司 | Efficient vanadium smelting decarbonization calcination boiler |
| CN103966425B (en) * | 2013-01-28 | 2015-11-18 | 长沙高新开发区大沅能源科技有限公司 | Efficient refining vanadium decarburization roasting boiler |
| CN103276195A (en) * | 2013-05-08 | 2013-09-04 | 北京神雾环境能源科技集团股份有限公司 | Stone coal vanadium ore shaft roasting method and system |
| CN103276195B (en) * | 2013-05-08 | 2015-07-01 | 北京神雾环境能源科技集团股份有限公司 | Stone coal vanadium ore shaft roasting method and system |
| WO2020017372A1 (en) * | 2018-07-17 | 2020-01-23 | 株式会社ブルークロス | Garbage incineration facility |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121107 Effective date of abandoning: 20130424 |
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| RGAV | Abandon patent right to avoid regrant |