..., they can be sent to the cat cracker without hydrodesulfurization. At the same time, the crude supply/demand situation is such that importation of Middle East crudes will increase. This means heavier feeds, higher in vanadium and even more important- ly, Sulfur. Either feed hydrotreating, or selective...

..., it is possible to regulate the correlation between different products of cracking. On the basis of the mixtures of tin salts of synthetic fatty acids a modifier has been worked out which increases the tolerance of the catalyst to con- tamination by vanadium. The use of the modifier keeps the acidity spectrum...

... are known for their remarkably high levels of sulphur and metals. The objective of the coker unit is to develop processes that allow heavy oil coke utilization in the aluminium industry. The study comprises laboratory and commercial scale testing and evaluation of two levels of vanadium in coke, namely 500...

... catalyst Nickel deactivation Downstream Oil & Gas vanadium refinery regenerator temperature production monitoring gasoline crude passivator production control feedstock optimum use operation heavy oil carbon residue selectivity conversion gas oil coke DEVELOPMENT OF REDUCED CRUDE...

...+) and hydrotreating deasphalted oil and vacuum gasoils jointly. Processing Morichal crude (12 "API, 2.9% sulphur, 8.7% asphaltenes, 11.1% Conradson carbon, 56% v/v resid (565 OC 320 ppm vanadium) yields a synthetic crude of 27 "API, 0.1% sulphur, undetectable vanadium, 6% v/v resid (565 OC The 96% v/v yield...

... substantially in the areas of thermal and 0.78 % Sulphur steam stability, attrition resistance, and particle type 0–19 % Nitrogen and size distribution. Only modest a PVT measurement feedstock vanadium operation Downstream Oil & Gas gasoline riser application pd 20 pretreatment Nickel...

... chargés en vanadium. Enfin un lavage à Seau effectué pendant la marche du moteur permet de maintenir l'adaptation de la suralimentation en éliminant les dépôts sur la tuyère et les ailettes de la turbine. En conclusion les problèmes d'utilisation des fuels résiduels sur les moteurs diesel semi-rapides...

... Abstract Sulfur, the alkalies, and vanadium are the principal causes of corrosion when burning residual fuel. Removal of these impurities generally is not economic, although many attempts have been made to improve residual fuels by water washing or by chemical treatment. Most effective of all...

... time that paraffin remediation wax inhibition scale remediation wax remediation asphaltene remediation Production Chemistry remediation of hydrates Downstream Oil & Gas fuel oil residue crude oilfield chemistry scale inhibition hd processing vanadium Hydrate Remediation...

... Abstract. All crudes contain remarkable quantities of metals, with a prevalence of nickel and vanadium. It has been ascertained that these are at least partially complexed with porphyrinic aggregates, but the amount of porphyrins identified in the crudes is always insufficient to explain...

... acetic acid vanadium complex reservoir porphyrin detection Upstream Oil & Gas residue nitrogen acid extract spectrum metal content extract determination porphyrin aggregate separation porphyrin content extraction procedure Petroleum Residue intensity Section V-Papa 11 DETECTION...

... chimique et physique des additifs et communique les résultats expérime Upstream Oil & Gas enhanced recovery turbine inlet silicate compressor gas temperature sulphate gas turbine vanadium investigation combustion chamber fuel additive fouling operation combustion melting point...

... of vanadium content of fuel oils and dolomite injection on corrosion of superheater steels and heat resisting alloys at elevated temperature. The corrosion resistance of superheater steels increased with increasing chromium content and high chromium alloys were more resistant than nickel based alloys to ash...

... domaines industriels, et dont les avantages furent rapidement reconnus par les utilisateurs metals & mining concentration vanadium steel Downstream Oil & Gas Upstream Oil & Gas coal application viscosity heat energy Boiler raw material industrial application sulphur...

.... The two major metals bound by the porphyrins in petroleum are nickel and vanadium. The combination of these metals with porphyrins renders them oil-soluble while the presence of the metals in the porphyrins gives these organic pigments enough extra stability to permit their survival through geologic time...

... by thermal conversion processes. For the most part, the decrease in 43.5%. *Houdry Process Corporation, I 528 Walnut Street, contaminant gasoline catalyst vanadium inspection octane Nickel operation charge stock vacuum bottom catalytic processing houdresid unit refinery Houdresid gas...

... décrit les expériences conduites á la fois sur un banc de combustion en laboratoire pour l'étude de la combustion, et sur une turbine à gaz industriel de 750 kic. L'action du vanadium sur la corrosion est influencée par la présence de soufre et de sodium dans le combustible et la proportion de sodium...

... in the fuel has an effect on whether SOz or SO3 is found. There are perhaps also catalytic influences, whereby especially vanadium compounds (from the oil ash) might have an effect. When gas oil with 0.5-0.6 % sulphur is used, there is already a strongly acid combustion residue (up to 17 % free sulphuric acid...

... Bunker Oil, no notable corrosive effects were noted on the casing, bladings or rotor. But according to reports by Schläpfer, Amgwerd and Preis (Schweizer Archiv Oct. 1949), oil ashes with some vanadium content attacked Cr-Ni steels considerably at temperatures above 650°C. A broad research programme...

... métallurgique en vue Origine des cendres des fuels résiduaires de l'achat des suies recueillies lors des ramonages des navipes de la flotte, ont attiré l'attention sur la présence du vanadium en proporlion importante dans certaines Ces cendres proviennent des matières minérales pré- suies. Or, la consommation...