US20170361268A1 - Char separator - Google Patents
Char separator Download PDFInfo
- Publication number
- US20170361268A1 US20170361268A1 US15/477,312 US201715477312A US2017361268A1 US 20170361268 A1 US20170361268 A1 US 20170361268A1 US 201715477312 A US201715477312 A US 201715477312A US 2017361268 A1 US2017361268 A1 US 2017361268A1
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- US
- United States
- Prior art keywords
- housing
- char
- reactor
- flange
- augers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
- C10G5/02—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas with solid adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/08—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs
- B01D3/085—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in rotating vessels; Atomisation on rotating discs using a rotary evaporator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/32—Other processes in ovens with mechanical conveying means
- C10B47/44—Other processes in ovens with mechanical conveying means with conveyor-screws
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/07—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B7/00—Coke ovens with mechanical conveying means for the raw material inside the oven
- C10B7/10—Coke ovens with mechanical conveying means for the raw material inside the oven with conveyor-screws
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G70/00—Working-up undefined normally gaseous mixtures obtained by processes covered by groups C10G9/00, C10G11/00, C10G15/00, C10G47/00, C10G51/00
- C10G70/04—Working-up undefined normally gaseous mixtures obtained by processes covered by groups C10G9/00, C10G11/00, C10G15/00, C10G47/00, C10G51/00 by physical processes
- C10G70/046—Working-up undefined normally gaseous mixtures obtained by processes covered by groups C10G9/00, C10G11/00, C10G15/00, C10G47/00, C10G51/00 by physical processes by adsorption, i.e. with the use of solids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
-
- 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
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
Definitions
- This application relates to an apparatus that is part of a re-useable fuel processing unit.
- This apparatus allows for the absorption of char contained within vapor that is leaving the reactor.
- the char, or carbon ash, that this apparatus allows for the absorption of is created when the shredded plastic that enters the reactor makes contact with the reactor's hot surface area. As the shredded plastic makes contact with the reactor's hot surface, it is spread thin across the reactor's surface and the reactor's heat vaporizes the shredded plastic as it was designed to do. A thin layer of the shredded plastic as well as the contaminants contained within the shredded plastic is left behind on the reactor's steel tubing and as is cooked to a solid char and then becomes airborne.
- the know art typically uses the following methods to remove char from liquid fuel: filtering to remove larger particulate matter from the fuel, but filters will become clogged and require periodic cleaning; distillation which can remove 99.9% of the carbon matter, but distillation is a sub-process outside the reactor that raises the cost of producing the re-useable fuel; cyclone systems are often used and try to remove most of the particles but can only remove large particles and the cyclone requires a heat source to prevent the vapors from condensing and forming liquid that re-collect the char; and, bag filters that are to limited to the heat the filter bags can withstand and will fail if they absorb liquid fuel.
- the Char Separator consists of a gear box drive, gearbox housing, support flange and seal, exhaust housing, exhaust port, connecting flange, screw top split housing, vertical steel housing, three augers with drive shafts on each auger contained within the steel housing, discharge flange, support ring, expansion cart, and cam followers.
- FIG. 1 depicts the Char Separator.
- the Char separator eliminates the problems discussed above with the prior art.
- the Char Separator depicted in FIG. 1 consists of three screw conveyor augers FIG. 1 at 76 running in a vertical split tube FIG. 1 at 75 that are placed so that their flights intersect with each other.
- the augers FIG. 1 at 76 provide for a downward rotation, cleaning each other from buildup as their flights intersect.
- As the hot vapors leave the reactor and enter the vertical tube FIG. 1 at 76 they travel upward in the auger tubes FIG. 1 at 75 .
- the vapors lose heat as they rise up the vertical tube.
- the temperature in the column is controlled so that the favored hydrocarbon chain vapors pass through the vertical tube and leave the vertical tube at the discharge FIG. 1 at 73 where the vapors are collected.
- the augers FIG. 1 at 76 where the augers FIG. 1 at 76 will push the condensed fuel back to the reactor.
- the condensed hydrocarbon fuel is a sticky substance.
- the vapors flowing up the vertical tube FIG. 1 at 75 will travel across the sticky fuel condensed on the augers FIG. 1 at 76 where the sticky substance will catch the carbon ash that is traveling with the vapors as the carbon ash is constantly looking for a substance to which to make contact.
- the vertical tube is attached to the lower reactor and travels with the reactors expansion, so it itself is supported with a rolling cart FIG. 1 at 79 located at its top.
- That section of the reactor is smaller in diameter and uses a ribbon type flight to allow for faster removal of solids while allowing vapors to pass back through the ribbon flights 18 .
- This section has a reverse rotation to the main auger located within the reactor where the main auger is pushing any dry char or heavy fuel deposits towards the char discharge.
- This section of the main reactor has two controlled heated zones that will re-heat and help in thermal cracking the high carbon chains that are pushed back into the main reactor by the Char Separator.
Abstract
Description
- This application priority to U.S. Provisional Patent Application No. 62/318,178, entitled “CHAR SEPARATOR,” filed Apr. 4, 2016. The entire contents and disclosures of this patent application is incorporated herein by reference in its entirety.
- This application discloses material that is related to material disclosed in a nonprovisional application filed on Dec. 9, 2015, titled “Heated Airlock Feeder Unit”, incorporated herein in its entirety by reference as well as the non-provisional application filed on Dec. 9, 2015 titled “Cyclonic Cooling System” incorporated herein in its entirety by reference.
- This application relates to an apparatus that is part of a re-useable fuel processing unit. This apparatus allows for the absorption of char contained within vapor that is leaving the reactor. The char, or carbon ash, that this apparatus allows for the absorption of, is created when the shredded plastic that enters the reactor makes contact with the reactor's hot surface area. As the shredded plastic makes contact with the reactor's hot surface, it is spread thin across the reactor's surface and the reactor's heat vaporizes the shredded plastic as it was designed to do. A thin layer of the shredded plastic as well as the contaminants contained within the shredded plastic is left behind on the reactor's steel tubing and as is cooked to a solid char and then becomes airborne. Small particles of char, 3 micron or smaller, become airborne and travel with the fuel vapors. This char is collected with the vapors and condensed into a liquid in high concentrations and makes the produced fuel an extremely thick liquid because the char is a solid particulate contained within the liquid. This particular carbon char is required to be removed from the fuel in order to produce a higher quality fuel. The know art typically uses the following methods to remove char from liquid fuel: filtering to remove larger particulate matter from the fuel, but filters will become clogged and require periodic cleaning; distillation which can remove 99.9% of the carbon matter, but distillation is a sub-process outside the reactor that raises the cost of producing the re-useable fuel; cyclone systems are often used and try to remove most of the particles but can only remove large particles and the cyclone requires a heat source to prevent the vapors from condensing and forming liquid that re-collect the char; and, bag filters that are to limited to the heat the filter bags can withstand and will fail if they absorb liquid fuel.
- The Char Separator consists of a gear box drive, gearbox housing, support flange and seal, exhaust housing, exhaust port, connecting flange, screw top split housing, vertical steel housing, three augers with drive shafts on each auger contained within the steel housing, discharge flange, support ring, expansion cart, and cam followers.
- The accompanying drawing illustrates the preferred embodiments of the present invention according to the best mode presently devised for making and using the instant invention, and in which:
-
FIG. 1 depicts the Char Separator. - The Char separator eliminates the problems discussed above with the prior art. The Char Separator depicted in
FIG. 1 consists of three screw conveyor augersFIG. 1 at 76 running in a vertical split tubeFIG. 1 at 75 that are placed so that their flights intersect with each other. The augersFIG. 1 at 76 provide for a downward rotation, cleaning each other from buildup as their flights intersect. As the hot vapors leave the reactor and enter the vertical tubeFIG. 1 at 76, they travel upward in the auger tubesFIG. 1 at 75. The vapors lose heat as they rise up the vertical tube. The temperature in the column is controlled so that the favored hydrocarbon chain vapors pass through the vertical tube and leave the vertical tube at the dischargeFIG. 1 at 73 where the vapors are collected. As the vapors rise and the temperature of the vapors is reduced to the value at where a high carbon chain fuel will condense, it will collect on the augersFIG. 1 at 76 where the augersFIG. 1 at 76 will push the condensed fuel back to the reactor. The condensed hydrocarbon fuel is a sticky substance. The vapors flowing up the vertical tubeFIG. 1 at 75 will travel across the sticky fuel condensed on the augersFIG. 1 at 76 where the sticky substance will catch the carbon ash that is traveling with the vapors as the carbon ash is constantly looking for a substance to which to make contact. The collected mass on the augersFIG. 1 at 76 is then forced down into the lower reactor where it returns to the reactor's heat returns to a heat zones through the discharge flangeFIG. 1 at 77. The collected mass is then reheated in the lower reactor of the re-useable fuel apparatus in which it vaporizes, breaking high carbon chains into lower carbon chains. The lower carbon chains will then travel back through the vertical tubeFIG. 1 at 75 and any carbon ash that travels with it will stick again to the augersFIG. 1 at 76 and be returned and any lower carbon vapors will pass through the vertical tubeFIG. 1 at 75 and be discharged from the exhaust portFIG. 1 at 73 to the fuel cooling system. The amount of heat rise in the columns can be controlled by both the RPM of the augers and the outside insulation of the column. The auger gear driveFIG. 1 at 69 uses spur gears to control the rotation and timing of the augersFIG. 1 at 76. By controlling the heat in the vertical tubeFIG. 1 at 75 the carbon-chain hydrocarbon fuel selected by the heat value chosen will be allowed to pass through. The construction of this vertical tube is unique in itself. It consists of three split tubesFIG. 1 at 75 encircling the augers in a clover shape. The shape is weld together and supported with outer bandsFIG. 1 at 78 to keep the shape intact due to heat warping. The discharge gases are expected to be over 500 degrees Fahrenheit and may overheat the gear boxFIG. 1 at 69. To prevent the gearbox oil from overheating an air gapFIG. 1 at 70 is designed in the unit. The vertical tube is attached to the lower reactor and travels with the reactors expansion, so it itself is supported with a rolling cartFIG. 1 at 79 located at its top. Where the column attaches to the reactor, that section of the reactor is smaller in diameter and uses a ribbon type flight to allow for faster removal of solids while allowing vapors to pass back through the ribbon flights 18. This section has a reverse rotation to the main auger located within the reactor where the main auger is pushing any dry char or heavy fuel deposits towards the char discharge. This section of the main reactor has two controlled heated zones that will re-heat and help in thermal cracking the high carbon chains that are pushed back into the main reactor by the Char Separator.
Claims (1)
Priority Applications (24)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/477,312 US20170361268A1 (en) | 2016-06-21 | 2017-04-03 | Char separator |
EP17814858.1A EP3472273A4 (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
CR20190020A CR20190020A (en) | 2016-06-21 | 2017-06-21 | CARBON SEPARATOR AND METHOD |
AU2017282172A AU2017282172B2 (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
BR112018076624-0A BR112018076624B1 (en) | 2016-06-21 | 2017-06-21 | APPARATUS FOR PROCESSING REUSABLE FUEL, METHOD FOR CLEANING CARBONIZED CARBONIZED FROM VAPORS IN A REACTOR AND METHOD FOR PRODUCING FUEL |
PCT/IB2017/053713 WO2017221180A1 (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
KR1020197001860A KR102399967B1 (en) | 2016-06-21 | 2017-06-21 | Char Separator and Method |
MX2018015963A MX2018015963A (en) | 2016-06-21 | 2017-06-21 | Char separator and method. |
IL263806A IL263806B (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
CN201780038052.XA CN109661452B (en) | 2016-06-21 | 2017-06-21 | Carbon separator and method |
KR1020227016370A KR20220070548A (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
SG11201810958UA SG11201810958UA (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
JP2018566447A JP2019529585A (en) | 2017-04-03 | 2017-06-21 | Char separator and method |
CA3028115A CA3028115A1 (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
US15/628,844 US10544367B2 (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
DO2018000286A DOP2018000286A (en) | 2016-06-21 | 2018-12-17 | CARBON SEPARATOR AND METHOD |
CL2018003676A CL2018003676A1 (en) | 2016-06-21 | 2018-12-18 | Coal separator and method. |
ZA201900262A ZA201900262B (en) | 2016-06-21 | 2019-01-15 | Char separator and method |
CONC2019/0000481A CO2019000481A2 (en) | 2016-06-21 | 2019-01-17 | Carbon separator and method |
US16/263,088 US10633595B2 (en) | 2016-06-21 | 2019-01-31 | Char separator |
US16/691,850 US11542434B2 (en) | 2016-06-21 | 2019-11-22 | Char separator and method |
JP2021072362A JP2021105187A (en) | 2017-04-03 | 2021-04-22 | Char separator and method |
AU2022202638A AU2022202638A1 (en) | 2016-06-21 | 2022-04-20 | Char separator and method |
US18/059,558 US20230089821A1 (en) | 2016-06-21 | 2022-11-29 | Char separator and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662318178P | 2016-06-21 | 2016-06-21 | |
US15/477,312 US20170361268A1 (en) | 2016-06-21 | 2017-04-03 | Char separator |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/628,844 Continuation-In-Part US10544367B2 (en) | 2016-06-21 | 2017-06-21 | Char separator and method |
US16/263,088 Division US10633595B2 (en) | 2016-06-21 | 2019-01-31 | Char separator |
Publications (1)
Publication Number | Publication Date |
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US20170361268A1 true US20170361268A1 (en) | 2017-12-21 |
Family
ID=60661073
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/477,312 Abandoned US20170361268A1 (en) | 2016-06-21 | 2017-04-03 | Char separator |
US16/263,088 Active US10633595B2 (en) | 2016-06-21 | 2019-01-31 | Char separator |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/263,088 Active US10633595B2 (en) | 2016-06-21 | 2019-01-31 | Char separator |
Country Status (3)
Country | Link |
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US (2) | US20170361268A1 (en) |
EP (1) | EP3472273A4 (en) |
CN (1) | CN109661452B (en) |
Cited By (1)
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CN111707329A (en) * | 2020-06-04 | 2020-09-25 | 河南菲普斯特仪器仪表有限公司 | Explosion-proof type capacitance level meter |
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2019
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CN111707329A (en) * | 2020-06-04 | 2020-09-25 | 河南菲普斯特仪器仪表有限公司 | Explosion-proof type capacitance level meter |
Also Published As
Publication number | Publication date |
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EP3472273A1 (en) | 2019-04-24 |
EP3472273A4 (en) | 2020-01-29 |
CN109661452B (en) | 2021-05-11 |
US20190185760A1 (en) | 2019-06-20 |
US10633595B2 (en) | 2020-04-28 |
CN109661452A (en) | 2019-04-19 |
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