摘要:
Disclosed herein is a method for determining the effectiveness of one or more asphaltene dispersant additives for inhibiting or preventing asphaltene precipitation in a hydrocarbon-containing material subjected to elevated temperature and pressure conditions.
摘要:
A process for removing non-volatile, particulate mercury from crudes and condensates is disclosed. Particulate mercury in crudes can be removed by a process of first adding a halogen, such as I2. The halogen converts at least 10% of the particulate mercury into an oil-soluble mercury compound that cannot be removed by filtration or centrifugation. This oil-soluble mercury compound can then be removed by adsorption onto a solid adsorbent. The process can operate at near ambient conditions. The adsorption step can be carried out by mixing a particulate adsorbent in the halogen-treated crude and then removing it by centrifugation, desalting, filtration, hydrocyclone or by settling.
摘要:
The present disclosure relates to a process for reducing the sulphur content of hydrocarbon feedstocks such as Natural Gas Condensate, Kerosene, Jet Fuel, Diesel, Vacuum Gas Oil and Fuel Oil. The process uses a tailored oxidation process comprising one or two oxidation steps to produce sulphoxides and/or sulphones. These sulphoxides and sulphones, whilst being still present in the liquid hydrocarbon streams, are subsequently extracted thereby producing a low sulphur hydrocarbon stream and optionally following further treatment of the sulphoxides and/or sulphones, produce a low sulphur aromatic hydrocarbon stream and an aqueous stream of sodium sulphite or sulphuric acid. The low sulphur hydrocarbon stream and low sulphur aromatic hydrocarbon stream may be individually recycled or combined for recycling.
摘要:
Trace element levels of heavy metals such as mercury in crude oil are reduced by contacting the crude oil with an iodine source, generating a water soluble heavy metal complex for subsequent removal from the crude oil. In one embodiment, the iodine source is generated in-situ in an oxidation-reduction reaction, by adding the crude oil to an iodine species having a charge and a reductant or an oxidant depending on the charge of the iodine species. In one embodiment with an iodine species having a positive charge and a reducing reagent, a complexing agent is also added to the crude oil to extract the heavy metal complex into the water phase to form water soluble heavy metal complexes which can be separated from the crude oil, for a treated crude oil having reduced levels of heavy metals.
摘要:
Disclosed herein is a method for determining the effectiveness of one or more asphaltene dispersant additives for inhibiting or preventing asphaltene precipitation in a hydrocarbon-containing material subjected to elevated temperature and pressure conditions.
摘要:
The present invention relates to systems and methods for producing fuels. In an embodiment, the invention includes a method of producing a diesel-equivalent fuel, including pyrolyzing biomass to form a pyrolysis oil and contacting the pyrolysis oil and an alcohol with a metal oxide catalyst at a temperature of greater than about 60 degrees Celsius. In an embodiment, the invention includes a method of refining pyrolysis oil including contacting pyrolysis oil and an alcohol with a metal oxide catalyst at a temperature of greater than about 60 degrees Celsius. In an embodiment, the invention includes a system for processing biomass into fuel including a pyrolysis chamber defining an interior volume; a first heating element configured to heat the pyrolysis chamber; a refining chamber in selective fluid communication with the pyrolysis chamber, the refining chamber defining an interior volume, a metal oxide catalyst disposed within the interior volume; and a second heating element configured to heat the refining chamber. Other embodiments are also described herein.
摘要:
The purpose of the invention described in this document is to disclose a novel method using mixtures to change the viscosity of both light and heavy petroleums, by decreasing or increasing said viscosity. The methods derived from this invention are useful at ambient temperature and atmospheric pressure. The active component of the invention is dopamine, a compound that combined with other substances enables a change in the fluidity properties of petroleum, an increase in the electric charge properties of the mixtures and solutions and the dissolution of insoluble compounds in water or aqueous solutions. Some of the mixtures of this invention have been applied to modifying proton mobility, whereby significant increases in particular caused by the presence of metals chosen to bring about this purpose, can be detected within these mixtures, by measuring the electric charge. The experiments which led to this invention demonstrated that the juice obtained from any part of the banana plant, whereof the chemical analysis includes dopamine and other compounds such as quinonas, carotenes and terpenes, is the cause of the effects found, in particular effects on the electric properties and on dissolving metals and metal compounds.
摘要:
A process for converting gaseous alkanes to olefins and higher molecular weight hydrocarbons wherein a gaseous feed containing alkanes is reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid are then reacted over a synthetic crystalline alumino-silicate catalyst, such as an X or Y type zeolite, at a temperature of from about 250° C. to about 500° C. so as to form olefins, higher molecular weight hydrocarbons and hydrobromic acid vapor. Various methods are disclosed to remove the hydrobromic acid vapor from the higher molecular weight hydrocarbons and to generate bromine from the hydrobromic acid for use in the process.
摘要:
An improved process is provided for the chemical conversion and removal of hydrogen sulfide from gaseous and liquid streams by contacting a low temperature catalytically-active carbonaceous char capable of rapidly decomposing hydrogen peroxide in an aqueous solution with said stream.
摘要:
The present invention is a process to remove a +2 ionic charged, organically bound metal from a petroleum feed. The process includes contacting feed with aqueous carbon dioxide in the essential absence for emulsion formation.