Abstract:
Processes for the catalytic dechlorination of one or more hydrocarbon products involve contacting a mixture comprising the hydrocarbon product(s) and a carrier gas with a dechlorination catalyst under catalytic dechlorination conditions to provide a dechlorinated hydrocarbon product, HCl, and the carrier gas. The dechlorinated hydrocarbon product may be separated from the HCl and the carrier gas to provide liquid fuel or lubricating base oil.
Abstract:
This invention relates to a method for refining vegetable oils, in particular cottonseed oil or a possible mixture of it with others, as substitute of diesel fuel remarkable in that a sequence of treatment steps to be performed on crude vegetable oil, including: a) a pre-treatment thereof consisting of the removal of oil insoluble impurities from the crude oil, b) removal of oil soluble impurities therefrom, c) a free acid neutralization thereof, and d) a drying, bleaching and filtration thereof. This invention also relates to an Additive of organic basis, containing ether, ketone, toluene, hexane, turpentine, alcohols in specific concentrations.
Abstract:
A method for the continuous extraction of impurities, in particular saponification products, from a fatty acid alkyl ester phase produced by transesterification of vegetable or animal oils or fats with a great tendency to form saponification products, by means of an aqueous, acid glycerol phase containing a complexing agent.
Abstract:
Improved methods for removing arsenic from starting liquid hydrocarbons are provided which comprise contacting the hydrocarbons with a composition containing a triazine component and a glycol ether component, allowing the composition to react with the arsenic to create a treated hydrocarbon fraction and an arsenic-rich fraction, and separating the treated fraction from the arsenic-rich fraction. Preferably, the treating composition also includes an alcohol, and is used at a level of from about 1-10,000 ppm.
Abstract:
A methodology for the removal of the harmful components of ash from urban/industrial wastes and sludges from the sewage treatment plants is invented. The harmful components are alkaline metals, chlorine, sulphur, zinc, lead, and chromium. They are removed before the thermochemical conversion and therefore the corrosion problems, scaling/deposition, ash agglomeration, dioxin and furan emissions, alkaline metal, chlorine, sulphur emissions are minimized if not diminished. The emissions of heavy metals such as zinc, lead, copper, and chromium are reduced. The removal is achieved with prepyrolysis/pregasification at 250-320° C. for 5 min to 2 h of urban/industrial wastes and sludges from the sewage treatment plants. Then the prepyrolysed/pregasified sample is washed with a 0.5%-5% weight basis aqueous calcium acetate and/or magnesium acetate and/or aluminum acetate solution. These acetate salts can be mixed in a proportion of 0% to 100% to form an active salt which is used for the preparation of the aqueous solution. Otherwise, they can be used separately to prepare separate solutions for successive extractions with the same results. The proportions used and the use or not of successive extractions depend on the kind and on the composition of the initial material as well as on the desired properties of the material after treatment. Any kind tap water from a public water supply system, spring, etc. can be used for the preparation of aqueous solution. The solid-toliquid ratio is 33 g/L to 600 g/L, the temperature varies from 13° C. to 95° C., and treatment time is between 5 min to 2.
Abstract:
A process has been developed for producing diesel fuel from renewable feedstocks such as plant oils and greases. The process involves treating a renewable feedstock by hydrogenating and deoxygenating i.e. decarboxylating and/or hydrodeoxygenating to provide a hydrocarbon fraction useful as a diesel fuel. If desired, the hydrocarbon fraction can be isomerized to improve cold flow properties. A portion of the hydrogenated and deoxygenated feedstock is selectively separated and then recycled to the treatment zone to increase the hydrogen solubility of the reaction mixture. A diesel range stream or a naphtha range stream, or a mixture of the two streams is used as a rectification agent in the selective hot high pressure hydrogen stripper to decrease the amount of product carried in the overhead.
Abstract:
A sulfur compound adsorbent for solvent extraction of coal and methods using the same to adsorb sulfur compounds and refine coal are provided. The adsorbent for solvent extraction of coal serves to remove sulfur compounds from an organic solvent containing a coal's combustible component resulting from solvent extraction of low-grade coal and is composed of any one or a mixture of two or more selected from among alkali earth metal oxide, alkali earth metal hydroxide, aluminum oxide and activated carbon.
Abstract:
A process comprising regenerating a used ionic liquid catalyst, recovering conjunct polymer from the regenerated catalyst and using at least a portion of the conjunct polymer is disclosed.
Abstract:
A method for preparing fuel components from crude tall oil. Feedstock containing tall oil including unsaturated fatty acids is introduced to a catalytic hydrodeoxygenation to convert unsaturated fatty acids, rosin acids and sterols to fuel components. Crude tall oil is purified in a purification by washing the crude tall oil with washing liquid and separating the purified crude tall oil from the washing liquid. The purified crude tall oil is introduced directly to the catalytic hydrodeoxygenation as a purified crude tall oil feedstock. An additional feedstock may be supplied to the catalytic hydrodeoxygenation.
Abstract:
A method and apparatus for converting carbonaceous material to a stream of carbon rich gas, comprising heating a slurry feed containing the carbonaceous material in a hydrogasification process using hydrogen and steam, at a temperature and pressure sufficient to generate a methane and carbon monoxide rich stream in which the conversion time in the process is between 5 and 45 seconds. In particular embodiments, the slurry feed containing the carbonaceous material is fed, along with hydrogen, to a kiln type reactor before being fed to the fluidized bed reactor. Apparatus is provided comprising a kiln type reactor, a slurry pump connected to an input of the kiln type reactor, means for connecting a source of hydrogen to an input of the kiln type reactor; a fluidized bed reactor connected to receive output of the kiln type reactor for processing at a fluidizing zone, and a source of steam and a source of hydrogen connected to the fluidized bed reactor below the fluidizing zone. Optionally, a grinder can be provided in the kiln type reactor.