Publication number: 20140246013
Abstract: Fired heater tubes with improved resistance to corrosion and fouling suitable for use in thermal processing units of petroleum refineries and petrochemical plants are fabricated from a bulk alloy of an alumina-forming alloy which is capable of forming a stable oxide film on the surfaces of the tubes. The bulk alloy comprising about 3 wt. % to about 20 wt. % of Al, about 5 wt. % to about 30 wt. % Cr and at least one alloying component selected from Fe, Ni, Co, Si, Mn, B, C, N, P, Ga, Ge, As, In, Sn, Sb, Pb, Sc, La, Y, Ce, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Re, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au and mixtures of these components.
Type:
Application
Filed:
May 15, 2014
Publication date:
September 4, 2014
Applicant:
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventors:
ChangMin Chun, David Samuel Deutsch, Mark A. Greaney, James E. Feather
Patent number: 8748008
Abstract: A fired heater tube that is resistant to corrosion and fouling is disclosed. The fired heater tube comprises an advantageous high performance coated material composition resistant to corrosion and fouling comprises: (PQR), wherein P is an oxide layer at the surface of (PQR), Q is a coating metal layer interposed between P and R, and R is a base metal layer, wherein P is substantially comprised of alumina, chromia, silica, mullite, spinels, and mixtures thereof, Q comprises Cr, and at least one element selected from the group consisting of Ni, Al, Si, Mn, Fe, Co, B, C, N, P, Ga, Ge, As, In, Sn, Sb, Pb, Sc, La, Y, Ce, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Re, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au and mixtures thereof, and R is selected from the group consisting of low chromium steels, ferritic stainless steels, austenetic stainless steels, duplex stainless steels, Inconel alloys, Incoloy alloys, Fe—Ni based alloys, Ni-based alloys and Co-based alloys.
Type:
Grant
Filed:
June 8, 2009
Date of Patent:
June 10, 2014
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
ChangMin Chun, Mark A Greaney, Ian A Cody, F. Pierce Hubbard, Jr., David Samuel Deutsch
Patent number: 8470097
Abstract: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance to a heat transfer component surface includes providing a silicon containing steel composition including an alloy and a Si-partitioned non-metallic film formed on a surface of the alloy. The alloy is formed from the composition ?, ?,and ?, in which ? is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, ? is Si, and ? is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The Si-partitioned non-metallic film comprises at least one of sulfide, oxysulfide and mixtures thereof.
Type:
Grant
Filed:
May 15, 2012
Date of Patent:
June 25, 2013
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
ChangMin Chun, Mark A Greaney, Thomas Bruno, Ian A Cody, Trikur A Ramanarayanan, LeRoy A Clavenna
Publication number: 20120273091
Abstract: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance to a heat transfer component surface includes providing a silicon containing steel composition including an alloy and a Si-partitioned non-metallic film formed on a surface of the alloy. The alloy is formed from the composition ?, ?, and t, in which ? is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, ? is Si, and t is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The Si-partitioned non-metallic film comprises at least one of sulfide, oxysulfide and mixtures thereof.
Type:
Application
Filed:
May 15, 2012
Publication date:
November 1, 2012
Applicant:
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventors:
ChangMin Chun, Mark A. Greaney, Thomas Bruno, Ian A. Cody, Trikur A. Ramanarayanan, LeRoy R. Clavenna