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31. 发明专利

CA2523592A1 ADVANCED EROSION RESISTANT CARBONITRIDE CERMETS 未知
公开(公告)号：CA2523592A1
公开(公告)日：2004-12-02
申请号：CA2523592
申请日：2004-05-18
申请人： EXXONMOBIL RES & ENG CO
发明人： KOO JAYOUNG , FOWLER CHRISTOPHER JOHN , JIN HYUN-WOO , PETERSON JOHN ROGER , ANTRAM ROBERT LEE , BANGARU NARASIMHA-RAO VENKATA , CHUN CHANGMIN
IPC分类号： C22C29/04 , C23C30/00
摘要： The invention includes a cermet composition represented by the formula (PQ)(RS)comprising: a ceramic phase (PQ) and a binder phase (RS) wherein, P is a metal selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Fe, Mn and mixtures thereof, Q is carbonitride, R is a metal selected fro m the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.

32. 发明专利

CA2523588A1 MULTI-SCALE CERMETS FOR HIGH TEMPERATURE EROSION-CORROSION SERVICE 未知
公开(公告)号：CA2523588A1
公开(公告)日：2004-12-02
申请号：CA2523588
申请日：2004-05-18
申请人： EXXONMOBIL RES & ENG CO
发明人： BANGARU NARASIMHA-RAO VENKATA , KOO JAYOUNG , CHUN CHANGMIN , FOWLER CHRISTOPHER JOHN , ANTRAM ROBERT LEE , PETERSON JOHN ROGER , JIN HYUN-WOO
IPC分类号： C22C29/00 , C22C29/14 , C23C30/00 , B22F7/00
摘要： A cermet composition represented by the formula (PQ)(RS)Xcomprising: a ceram ic phase (PQ), a binder phase (RS) and X wherein X is at least one member selected from the group consisting of an oxide dispersoid E, an intermetalli c compound F and a derivative compound G wherein said ceramic phase (PQ) is dispersed in the binder phase (RS) as particles of diameter in the range of about 0.5 to 3000 microns, and said X is dispersed in the binder phase (RS) as particles in the size range of about 1 nm to 400 nm.

33. 发明专利

AU2004242141A1 Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance 未知
公开(公告)号：AU2004242141A1
公开(公告)日：2004-12-02
申请号：AU2004242141
申请日：2004-05-18
申请人： EXXONMOBIL RES & ENG CO
发明人： BANGARU NARASIMHA-RAO VENKATA , KOO JAYOUNG , ANTRAM ROBERT LEE , FOWLER CHRISTOPHER JOHN , CHUN CHANGMIN , JIN HYUN-WOO , PETERSON JOHN ROGER
IPC分类号： B04C5/085 , C22C29/06 , C22C29/10 , C22C32/00 , C23C30/00
摘要： Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula M x C y , is dispersed in a metal binder phase. In M x C y M is Cr, Fe, Ni, Co, Si, Ti, Zr, Hf, V, Nb, Ta, Mo or mixtures thereof, x and y are whole or fractional numerical values with x ranging from 1 to 30 and y from 1 to 6. These cermets are particularly useful in protecting surfaces from erosion and corrosion at high temperatures.

34. 发明专利

AU2004242136A1 Composition gradient cermets and reactive heat treatment process for preparing same 未知
公开(公告)号：AU2004242136A1
公开(公告)日：2004-12-02
申请号：AU2004242136
申请日：2004-05-18
申请人： EXXONMOBIL RES & ENG CO
发明人： BANGARU NARASIMHA-RAO VENTAKA , FOWLER CHRISTOPHER JOHN , JIN HYUN-WOO , PETERSON JOHN ROGER , CHUN CHANGMIN , ANTRAM ROBERT LEE , KOO JAYOUNG
IPC分类号： C22C29/00 , C23C8/00 , C23C8/10 , C23C8/20 , C23C8/22 , C23C8/24 , C23C8/26 , C23C30/00
摘要： Cermets, particularly composition gradient cermets can be prepared starting with suitable bulk metal alloys by a reactive heat treatment process involving a reactive environment selected from the group consisting of reactive carbon, reactive nitrogen, reactive boron, reactive oxygen and mixtures thereof.

35. 发明专利

CA2464657A1 METHOD FOR FORMING PEARLITE IN AN IRON BASED ARTICLE 未知
公开(公告)号：CA2464657A1
公开(公告)日：2003-05-08
申请号：CA2464657
申请日：2002-10-08
申请人： EXXONMOBIL RES & ENG CO
发明人： MUMFORD JAMES DIRICKSON III , RAMANARAYANAN TRIKUR ANANTHARA , CHUN CHANGMIN , OZEKCIN ADNAN
IPC分类号： C23C8/22 , C21D6/00 , C21D1/74
摘要： The present invention is directed to a process for producing pearlite from a n iron containing article comprising the steps of, (a) heating an iron containing article comprising at least 50 wt % iron for a time and at a temperature sufficient to convell at least a portion of said iron from a ferritic structure to an austenitic structure, (b) exposing said austenitic structure, for a time sufficient and at a temperature of about 727 to about 900~C, to a carbon supersaturated environment to diffuse carbon into said austenitic structure and ( c ) cooling said iron containing article to form a continuous pearlite structure.

36. 发明专利

CA2869406A1 ALUMINA FORMING BIMETALLIC TUBE FOR REFINERY PROCESS FURNACES AND METHOD OF MAKING AND USING 未知
公开(公告)号：CA2869406A1
公开(公告)日：2013-10-17
申请号：CA2869406
申请日：2013-04-12
申请人： EXXONMOBIL RES & ENG CO
发明人： CHUN CHANGMIN , DEUTSCH DAVID SAMUEL , FEATHER JAMES E , MCCRAY VANCE A , RAICH BRENDA ANNE
IPC分类号： C10G75/00 , B23K10/02 , C10G9/16 , C10G9/20 , C23C28/02 , F16L9/02
摘要： Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from stainless steels including chromium in the range of 15.0 to 26.0 wt.% based on the total weight of the stainless steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt.% of Al, 20.0 wt.% to 25.0 wt.% Cr, less than 0.4 wt.% Si, and at least 35.0 wt.% Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof. Also provided are methods of making and using the bimetallic tube.

37. 发明专利

CA2526521C ADVANCED EROSION-CORROSION RESISTANT BORIDE CERMETS 未知
公开(公告)号：CA2526521C
公开(公告)日：2013-07-16
申请号：CA2526521
申请日：2004-05-18
申请人： EXXONMOBIL RES & ENG CO
发明人： BANGARU NARASIMHA-RAO VENKATA , CHUN CHANGMIN , THIRUMALAI NEERAJ SRINIVAS , JIN HYUN-WOO , PETERSON JOHN ROGER , ANTRAM ROBERT LEE , FOWLER CHRISTOPHER JOHN , KOO JAYOUNG
IPC分类号： C22C1/05 , C22C29/14 , C23C24/08 , C23C30/00
摘要： A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, R is selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.

38. 发明专利

CA2622895C HIGH PERFORMANCE ALLOYS WITH IMPROVED METAL DUSTING CORROSION RESISTANCE 未知
公开(公告)号：CA2622895C
公开(公告)日：2012-06-12
申请号：CA2622895
申请日：2006-04-07
申请人： EXXONMOBIL RES & ENG CO
发明人： CHUN CHANGMIN , RAMANARAYANAN TRIKUR ANANTHARAMAN
IPC分类号： C22C30/00 , C23C8/14 , C23C8/18 , C23C14/08 , C23C16/40 , C23C28/04
摘要： Alloy compositions which are resistant to metal dusting corrosion are provided by the present invention. Also provided are methods for preventing metal dusting on metal surfaces exposed to carbon supersaturated environments. The alloy compositions include an alloy (PQR), and a multi-layer oxide film on the surface of the alloy (PQR). The alloy (PQR) includes a metal (P) selected from the group consisting of Fe, Ni, Co, and mixtures thereof, an alloying metal (Q) comprising Cr, Mn, and either Al, Si, or Al/Si, and an alloying element (R). When the alloying metal (Q) includes Al, the multi-layer oxide film on the surface of the alloy includes at least three oxide layers. When the alloying metal (Q) includes Si, the multi-layer oxide film on the surface of the alloy (PQR) includes at least four oxide layers. When the alloying metal (Q) includes Al and Si, the multi-layer oxide film on the surface of the alloy (PQR) includes at least three oxide layers. The multi-layer oxide film is formed in situ during use of the alloy composition in a carbon supersaturated metal dusting environment. Advantages exhibited by the disclosed alloy compositions include improved metal dusting corrosion resistance at high temperatures in carbon-supersaturated environments having relatively low oxygen partial pressures. The disclosed alloy compositions are suitable for use as the inner surfaces in reactor systems and refinery apparatus.

39. 发明专利

CA2456764C FURNACE RUN LENGTH EXTENSION BY FOULING CONTROL 未知
公开(公告)号：CA2456764C
公开(公告)日：2010-09-14
申请号：CA2456764
申请日：2002-07-23
申请人： EXXONMOBIL RES & ENG CO
发明人： RAMANARAYANAN TRIKUR A , UPPAL ASHOK , CHUN CHANGMIN
IPC分类号： B08B17/00 , C23C8/18 , B08B9/02 , B08B9/04 , C10G75/00 , C22C19/00 , C22C38/00 , C22C38/18 , C23C8/16 , C23F11/02 , F23J3/02 , F27D25/00 , F28G13/00
摘要： The invention relates to a method for cleaning the surface of an alloy comprising a base metal and an alloying metal, comprising the steps of: (a) pigging said alloy surface; and thereafter (b) passivating said alloy by contacting said surface with a gas comprising steam for a time and at a temperature sufficient to form at least on mixed oxide layer on said alloy wherein said mixed metal oxide contains an average alloying metal content of from equal to the alloying metal content in said alloy up to 100% alloying metal. The method is particularly applicable in increasing the run length in a refinery process conducted in a unit having alloy surfaces susceptible to fouling.

40. 发明专利

DK1641949T3 未知
公开(公告)号：DK1641949T3
公开(公告)日：2009-03-02
申请号：DK04752551
申请日：2004-05-18
申请人： EXXONMOBIL RES & ENG CO
发明人： BANGARU NARASIMHA-RAO VENKATA , CHUN CHANGMIN , THIRUMALAI NEERAJ SRINIVAS , JIN HYUN-WOO , PETERSON JOHN ROGER , ANTRAM ROBERT LEE , FOWLER CHRISTOPHER JOHN , KOO JAYOUNG
IPC分类号： C22C1/05 , C22C29/14 , C23C24/08 , C23C30/00
摘要： The invention is related to a method for protecting a metal surface subject to erosion temperatures up to 850° C. The method comprises providing the metal surface with a cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, and Group VI elements, Q is boride, R is selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises Ti and at least one element selected from the group consisting of Cr, Al, Si and Y.

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