WO2005100622A1 - Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters - Google Patents
Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters Download PDFInfo
- Publication number
- WO2005100622A1 WO2005100622A1 PCT/US2005/011517 US2005011517W WO2005100622A1 WO 2005100622 A1 WO2005100622 A1 WO 2005100622A1 US 2005011517 W US2005011517 W US 2005011517W WO 2005100622 A1 WO2005100622 A1 WO 2005100622A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalytic
- coating material
- nitric acid
- nitrate
- catalytic coating
- Prior art date
Links
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 139
- 239000000463 material Substances 0.000 title claims abstract description 119
- 238000000576 coating method Methods 0.000 title claims abstract description 71
- 239000002184 metal Substances 0.000 title claims abstract description 67
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 67
- 239000011248 coating agent Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000002950 deficient Effects 0.000 title description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 38
- 230000000712 assembly Effects 0.000 claims abstract description 24
- 238000000429 assembly Methods 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 19
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 17
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000013019 agitation Methods 0.000 claims description 11
- 150000002739 metals Chemical class 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- -1 platinum group metals Chemical class 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims 4
- 239000007792 gaseous phase Substances 0.000 claims 2
- 239000007790 solid phase Substances 0.000 claims 2
- 230000001376 precipitating effect Effects 0.000 claims 1
- 239000003054 catalyst Substances 0.000 description 15
- 238000011084 recovery Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 231100000647 material safety data sheet Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
- C22B11/042—Recovery of noble metals from waste materials
- C22B11/048—Recovery of noble metals from waste materials from spent catalysts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/065—Nitric acids or salts thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
-
- 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
Definitions
- the invention relates to destruction of the bonding between a catalyst 15 . coating material and its underlying metal support structure, and subsequent removal of the catalyst material from spent, defective, or unused metal support catalytic converters.
- Metal support catalytic converters or converter assemblies also 20 commonly known as steel mantle catalytic converters, metal substrate catalytic converters, are often used to reduce air pollution emissions. In particular, some examples of their use is in connection with mobile and stationary internal combustion engines, such as those in automobiles and power generators. Catalytic crackers, which also contain catalytic materials, are often used in the 25 petroleum refining industry.
- catalytic coating material containing valuable metals which are fixed to a metal support structure.
- the valuable catalytic -materials remain behind when the catalytic converter or other device containing the catalytic coating materials is removed from service.
- defective converters which cannot be used contain these valuable metals, as do unused converters, which for one or more reasons, may not have been used, and may no longer be useful for the purpose for which they were manufactured.
- Valuable catalytic metals present in the coatings of converters may include precious metals, and for example, are often be left behind in spent, defective or unused catalytic converters or devices.
- the invention provides a process for recovering catalytic coating material from catalytic converters, catalytic material or catalytic assemblies where the catalytic coating material is bonded to a metal supporting structure, the process being carried out by contacting the catalytic coating material with nitric acid and/or a nitrate-containing chemical or material, applying heat, agitating the catalytic converters, catalytic material or catalytic assemblies being processed to dislodge the catalytic coating material, and rinsing the catalytic converters, catalytic material or catalytic assemblies with water to facilitate the removal of remaining catalytic coating material, and removing ionic metal species present in the solution with a recovery step.
- the invention provides an economical process for removing metal containing coatings from a supporting metal structure, and in particular where the coating contains a precious metal and other metals such as nickel.
- the process may be used for removal of metal catalytic coatings from a steel structure.
- the invention is economically advantageous in that relatively inexpensive nitric acid may be employed to facilitate the removal of the coatings from a metal structure.
- the invention in addition to being economically advantageous, has significant environmental advantages, since the process seeks to avoid the release of heavy metals in any form as well as employ the use of chemicals which may be severely toxic to the environment.
- the invention provides a process whereby the bond that fixes the catalyst coating material containing any combination of platinum group metals and other elements onto the underlying metal suppo rt structure of metal support catalytic converters is destroyed or broken and the said catalytic coating material is subsequently removed from its support structure for recycling of the valuable metals contained in the coating material.
- the removal process of separating the catalytic coating material from the metal support structure of spent, defective or unused metal support catalytic converters or converter assemblies is then accomplished by a suitable removal step, which may, for example, comprise ultrasonic agitation, a simple rinse using a liquid such as water, the use of some other mechanical means, or a combination of any one or more of these.
- a suitable removal step may, for example, comprise ultrasonic agitation, a simple rinse using a liquid such as water, the use of some other mechanical means, or a combination of any one or more of these.
- These converters and converter assemblies are primarily used to reduce air pollution emissions of mobile and stationary internal combustion engines such as those in automobiles and power generators.
- the process may also be applicable for catalytic crackers used in the petroleum refining industry and other applications where catalytic coating material containing valuable metals are fixed to a metal support structure.
- the process according to the present invention is accomplished by effecting contact between the catalytic coating material contained in or on the metal support catalytic converters and nitric acid and/or a nitrate-containing chemical or material (that is any chemical or compound which is classified as a nitrate by its material safety data sheet or containing a chemical or material so classified) of a minimum of 0.1% nitric acid or 1% nitrate content by weight.
- nitric acid and/or nitrate-containing chemical or material is put in contact with the catalyst coating material to destroy the bonding bet ⁇ ween the catalyst coating material and the underlying metal structure.
- the catalyst coating material is removed by either ultrasonic agitation, a simple liquid rinse, or mechanical agitation preferably while immersed in a mild detergent solution, or through the application of a pressure spray.
- the contact described above can be effected by one or more of gaseous, liquid or solid means, including a combination thereof, whereby a nitrate-containing chemical or material is either heated in conjunction with the metal support catalytic converters being processed at temperatures ranging between 0C and the melting point of the underlying metal structure of said metal support catalytic converters, or one or more of the components are heated separately.
- the temperature range for the step of contacting the catalyst coating material with the nitric acid and/or nitrate- containing chemical or material is carried out at a temperature range of between approximately 65C and the melting point of the underlying metal structure.
- the invention there are many possible implementations of "the invention, but excellent results have been achieved by immersing the catalytic converters, catalytic material or catalytic assemblies in nitric acid and/or a nitrate-containing chemical or material solution in a stainless steel ultrasonic tank and using ultrasonic agitation to facilitate the destruction of the bonding and removal of the catalyst coating material from its underlying metal support structure.
- the nitric acid and/or nitrate-containing material may be provided in a solution of 60% water and 40% nitric acid solution, with the initial nitric acid solution consisting of 68% nitric acid and 32% water and it is preferred that the ultrasonic tank solution be kept at a temperature of between approximately 65 C and 100C during agitation.
- the material being agitated in the tank may be placed in a stainless steel basket, which, on a regular basis, may be removed from the tank for inspection of the material being processed to check on the progress of catalytic coating material removal.
- the agitation time required to destroy the bonding between the catalyst coating material and the underlying metal support structure and remove the valuable catalytic coating material may be very short in duration.
- the structure and material of the catalytic converters, catalytic material or catalytic assemblies that no longer have valuable catalytic coating material affixed to it may be removed prior to or during the process.
- the catalytic converters, catalytic material or catalytic assemblies are then taken from the ultrasonic tank with virtually all catalytic coating material having been removed.
- a light water rinse is applied in another tank to the catalytic converters, catalytic material or catalytic assemblies being taken from the ultrasonic tank to wash off any catalytic coating material that remains adhered by surface tension.
- a tank containing a nitric acid and/or nitrate- containing solution to carry out the step of contacting the catalytic converters, catalytic material or catalytic assemblies may enable repeated use of the solution.
- the ultrasonic tank is then ready to receive more converters or converter material for agitation and removal of any affixed catalytic coating material. This process can be continued until either the nitric acid has lost its effectiveness or the sheer mass of loose catalytic coating material removed from its underlying metal support structure begins to interfere with the agitation and removal process in the ultrasonic tank.
- nitric acid has been consumed, fresh nitric acid can be added to the ultrasonic tank; however, if a great deal of catalytic coating material has accumulated in the tank, it is preferable to drain and filter the tank contents to capture and remove the valuable catalytic coating material. The filtered solution can then be returned to the ultrasonic tank to process more converter material.
- One advantage of. the invention is that unlike acid lea-ch chemistry such as aqua regia, with this process very little iron is leached into solution from the metal support structure of the converters or converter assemblies;, which in all current implementations are steel alloys resistant to nitric acid.
- some of the metals in the catalyst coating material including, but not limited to, palladium may be dissolved into solution.
- the recovery step may be carried out using electrowinning, electrolytic precipitation, precipitation with chemicals or other known techniques.
- the ultrasonic tank solution preferably may be used until it is so impregnated with ionic species that it can no longer effectively destroy the bonding between the catalytic coating material and th-e underlying metal support structure.
- the invention described above has been found to be simple, extremely economical and is highly effective in destroying the bonding between the catalyst coating material and the underlying metal support structure in all types of metal support catalysts currently in use for reduction of air pollutants from internal combustion engines.
- This breaking of the bonding allows for easy removal of the valuable spent, defective or unused catalyst coating material and subsequent recovery of the platinum group metals, nickel and other metals that may be contained in the catalyst coating material.
- the invention may also be effective in recovery of valuable metals from other catalyst material and in other recovery applications.
- the invention has significant cost and environmental advantages in that relatively inexpensive nitric acid is the prin-cipal process chemical and there is neither any release of heavy metals in any form nor any use of toxic chemicals.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2563075 CA2563075A1 (en) | 2004-04-07 | 2005-04-06 | Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters |
MXPA06011357A MXPA06011357A (en) | 2004-04-07 | 2005-04-06 | Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters. |
US11/547,595 US20080282843A1 (en) | 2004-04-07 | 2005-04-06 | Process for Removal of the Catalytic Coating Material from Spent, Defective or Unused Metal Support Catalytic Converters |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US56011404P | 2004-04-07 | 2004-04-07 | |
US60/560,114 | 2004-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005100622A1 true WO2005100622A1 (en) | 2005-10-27 |
Family
ID=35150020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/011517 WO2005100622A1 (en) | 2004-04-07 | 2005-04-06 | Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080282843A1 (en) |
CA (1) | CA2563075A1 (en) |
MX (1) | MXPA06011357A (en) |
WO (1) | WO2005100622A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009094732A1 (en) | 2008-01-30 | 2009-08-06 | G.E. Conseils Sprl | Process for the recovery of precious metals from used and/or defective catalytic carriers |
CN103672970A (en) * | 2012-09-26 | 2014-03-26 | 通用电气公司 | System and method for employing catalytic reactor coatings |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005098058A1 (en) * | 2004-04-05 | 2005-10-20 | Holgersen James D | Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters |
US8316647B2 (en) * | 2009-01-19 | 2012-11-27 | General Electric Company | System and method employing catalytic reactor coatings |
US8287618B2 (en) * | 2010-11-10 | 2012-10-16 | Kuwait Institute For Scientific Research | Method or process for recovering Mo, V, Ni, Co and Al from spent catalysts using ultrasonic assisted leaching with EDTA |
US11225702B2 (en) | 2018-03-15 | 2022-01-18 | The Board Of Regents For Oklahoma State University | Platinum group metals recovery |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5304359A (en) * | 1992-03-03 | 1994-04-19 | Bhp Minerals International Inc. | Dissolution of platinum group metals from materials containing said metals |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3469971A (en) * | 1967-02-28 | 1969-09-30 | Universal Oil Prod Co | Recovery of platinum from deactivated catalysts |
US5102632A (en) * | 1990-12-21 | 1992-04-07 | Metallgesellschaft Aktiengesellschaft | Two-step method for recovering dispersed noble metals |
US5160711A (en) * | 1991-05-10 | 1992-11-03 | The United States Of America As Represented By The Secretary Of The Interior | Cyanide leaching method for recovering platinum group metals from a catalytic converter catalyst |
DE4122717C2 (en) * | 1991-07-09 | 1994-04-14 | Ear Gmbh | Method and device for processing metal supported catalysts |
AUPS167402A0 (en) * | 2002-04-11 | 2002-05-16 | Platinum Australia Limited | Method for extracting pgms |
WO2005098058A1 (en) * | 2004-04-05 | 2005-10-20 | Holgersen James D | Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters |
-
2005
- 2005-04-06 CA CA 2563075 patent/CA2563075A1/en not_active Abandoned
- 2005-04-06 WO PCT/US2005/011517 patent/WO2005100622A1/en active Application Filing
- 2005-04-06 MX MXPA06011357A patent/MXPA06011357A/en not_active Application Discontinuation
- 2005-04-06 US US11/547,595 patent/US20080282843A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5304359A (en) * | 1992-03-03 | 1994-04-19 | Bhp Minerals International Inc. | Dissolution of platinum group metals from materials containing said metals |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009094732A1 (en) | 2008-01-30 | 2009-08-06 | G.E. Conseils Sprl | Process for the recovery of precious metals from used and/or defective catalytic carriers |
BE1017974A3 (en) * | 2008-01-30 | 2010-02-02 | Variabel Daniel | METHOD FOR THE VALORISATION OF USUAL AND / OR DEFECTIVE CATALYTIC SUPPORT ELEMENTS |
AU2009208314B2 (en) * | 2008-01-30 | 2011-02-24 | G.E. Conseils Sprl | Process for the recovery of precious metals from used and/or defective catalytic carriers |
JP2011510806A (en) * | 2008-01-30 | 2011-04-07 | ヴァリアブル・ダニエル | Method for recovering noble metals from used and / or voided catalyst supports |
AU2009208314B9 (en) * | 2008-01-30 | 2011-06-23 | G.E. Conseils Sprl | Process for the recovery of precious metals from used and/or defective catalytic carriers |
CN103672970A (en) * | 2012-09-26 | 2014-03-26 | 通用电气公司 | System and method for employing catalytic reactor coatings |
CN103672970B (en) * | 2012-09-26 | 2017-09-22 | 通用电气公司 | Use the system and method for catalytic reactor coatings |
Also Published As
Publication number | Publication date |
---|---|
CA2563075A1 (en) | 2005-10-27 |
MXPA06011357A (en) | 2007-04-23 |
US20080282843A1 (en) | 2008-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20080282843A1 (en) | Process for Removal of the Catalytic Coating Material from Spent, Defective or Unused Metal Support Catalytic Converters | |
US7740685B2 (en) | Process for removal of the catalytic coating material from spent, defective or unused metal support catalytic converters | |
EP2240614A1 (en) | Process for the recovery of precious metals from used and/or defective catalytic carriers | |
JP4274802B2 (en) | Platinum group precious metal recovery method | |
EP0030805A1 (en) | Process for the separation of contaminant material from contaminated oil | |
CN102676836A (en) | Method for recovery of precious metal from functionalised absorption materials containing precious metals | |
EP1122323A1 (en) | Method for recovering platinum from platinum-containing coatings on gas turbine engine components | |
US20070183951A1 (en) | Method for recovering noble metals from metallic carrier catalytic device | |
US4039471A (en) | Process for rejuvenating automobile emission control catalysts | |
WO1997006282A1 (en) | Electrochemical processing method for catalyst substrates containing noble metals for the recovery thereof | |
JP2012223665A (en) | Method for regenerating exhaust gas purifying catalyst | |
US11225702B2 (en) | Platinum group metals recovery | |
US11427887B2 (en) | Extraction of selected platinum-group metals from supported catalyst | |
JP2004074033A (en) | Sorting processing method of metallic catalyst carrier | |
JPH0499826A (en) | Method for separating noble metal | |
JPH02209433A (en) | Method for recovering plantinum group metal from metallic carrier catalyst | |
JPH06170246A (en) | Recovering method of pt group metal from metallic carrier catalyst | |
KR100661533B1 (en) | Chemical regeneration method of deactivated spent catalysts | |
JP3550528B2 (en) | How to recover platinum from spent catalyst | |
TWI295691B (en) | A method for the recycling of scrap de-nox catalyst | |
JPH0834619A (en) | Recovering method of noble metal from metallic carrier catalyst | |
JPH09141003A (en) | Method for occluding metal and metal adsorbent | |
JP2014513201A (en) | Recovery method of hard material particles | |
KR100892381B1 (en) | Method for regeneration of activity of spent activated carbon catalyst | |
JPH0456780B2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2006/011357 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11547595 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2563075 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |