发明名称 |
ALUMINA FORMING BIMETALLIC TUBE FOR REFINERY PROCESS FURNACES AND METHOD OF MAKING AND USING |
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 carbon steels or low chromium steels comprising less than 15.0 wt. % Cr based on the total weight of the 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. |
申请公布号 |
EP2766683(A4) |
申请公布日期 |
2016.01.06 |
申请号 |
EP20120840743 |
申请日期 |
2012.04.13 |
申请人 |
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY |
发明人 |
CHUN, CHANGMIN;DEUTSCH, DAVID, SAMUEL;MCCRAY, VANCE, A.;FEATHER, JAMES, E.;RAICH, BRENDA, A. |
分类号 |
F27B5/14 |
主分类号 |
F27B5/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|