one or more elements selected from the group consisting of 4.0 - 15.3% of Mo, 1 - 5.7% of V; up to 13% of CO and up to 28% of W and the number of clusters of Cr + Mo + V%%%%% + W + CO is equal to or less than 35% and Fe mainly to balance more incidental impurities...
The catalyst bed containing Co, Mo, Fe and/or Cr and a layer of TiO2 particles is operated at 250-550 deg C. The CO content of the carburation gas is 5 mol.%. The gas from the catalyst bed is subjected to acid gas washingSPORER JOSEF...
In this work, techniques such as optical microscopy, field emission scanning electron microscopy (FESEM) equipped with an EDS microanalysis system and hardness tests were employed to analyze HK 40 stainless steel and Incoloy 802 used in pyrolysis tubes for polymeric material production. The presence ...
PURPOSE:To improve the heating energy in the carburation of a gas with a low calorific value and reduce the cost, by mixing the low calorie gas with a vaporized petroleum gas obtained by heat exchange between a liquefied petroleum gas and heating water running through piping. CONSTITUTION:In ...
[Also in Divisions B1 and C7] Corrosion of furnaces or furnace tubes of an alloy containing Fe, Ni and/or Co, and at least 15% Cr used in a carburizing environment, e.g. in catalytic steam reforming of hydrocarbons, is prevented by coating with e.g. enamel or Al, Cr or Ni. The ...
Here both a graphical and an analytical method are presented for calculating carbon activity as a function of the partial pressures ratios p(CO)/p(CO_2) and p(CH_4)/p(H_2).As an example, the decarburation control in pure iron and in certain Fe-Cu and Fe-Cr alloys is studied....
04% or less, s: 0015% or less, Cr: more than 16,0% and less than 20,0%,Ni: 20,0% or more and less than 30,0%,Ass: 0,5 to 10,0%,Al: 0,15% or less, Ti: 0,15% or less, N: 0005 to 0,20% and (oxygen): 0,02% or less, where the balance is Fe and ...
Metals are melted, refined, converted or recarburized by means of at least one flame thrower in which one or more of powdered Fe, Mg, Ca, Al and the suboxides of Fe and Mn suspended in a liquid or gaseous combustible material (e. g. CO) is burnt with cold or pre-heated oxygen ...