Abstract:
The present invention concerns a method for the removal of inorganic components such as potassium, sodium, chlorine, sulfur, phosphorus and heavy metals, from biomass of rural or forest or urban origin or even mixture of different origin biomasses, from low quality coals such as peat, lignite and sub-bituminous/bituminous coals, from urban/industrial origin residues/wastes, which are possible to include as much organic—>5% weight—as inorganic—
Abstract:
The present invention relates to the recycling by depolymerisation through thermolysis. A method and installation for depolymerisation through efficient thermolysis for recycling is provided that allow the production of light hydrocarbons having high quality and being free of impurities and contaminants. This objective is achieved by methods and installations where either the secondary products of the process are re-fed to supply energy for the main recycling process or are refined to manufacture final usable and saleable products. Therefore, the use of the energy content of the starting materials is maximised by assuring their full utilisation, minimising the environmental harm while an energetically autonomous installation is provided. All the components of the waste or starting material may be recycled, by physico-chemical means, and no additional contaminant waste is produced.
Abstract:
The invention relates to a method for the continuous extraction of impurities, in particular saponification products, present in a fatty acid alkyl ester phase obtained by the transesterification of vegetable and animal oils or fats, having a high tendency to form saponification products by means of an aqueous, acidic glycerin phase containing a complexing agent.
Abstract:
The present invention relates to a method for purifying a compound selected from a compound represented by the following general formula [1] or [2], a saturated aliphatic hydrocarbon having no substituent, or kerosene:
(R represents a halogen atom or a lower alkyl group having 1 to 3 carbon atoms, and n represents an integer of 1 to 5);
(R is the same as above, p and q independently represent an integer of 0 to 4, with the proviso that at least one ofp and q is not 0), comprising: removing a impurity contained in said compound by a first step comprising contacting said compound with ozone gas, and then a second step comprising contacting said compound with an adsorbent selected from zeolite or a basic adsorbent.
Abstract:
A process for removing color bodies from hydrocarbon-based fuels, particularly gasoline, using an activated carbon is disclosed. Color bodies are removed from the fuel by contacting the fuel with such activated carbon having within this pore structure a fuel decolorizing amount of polymerized phosphoric acid or reduced transition metals. Phosphoric acid may be added to a non-phosphoric acid-activated carbon (such as steam activated coal-based) prior to the subsequent heat treatment or one can take advantage of residual phosphoric acid present in, for example, a phosphoric acid-activated wood-based carbon. Similarly, transition metals such as copper may be added to an activated carbon in a salt form in addition to whatever is already present therein as impurities.
Abstract:
Processes and systems for stabilization and subsequent hydrogenation of an immiscible olefin are described. Methods of stabilizing a microbial-derived olefin composition are also described.
Abstract:
La présente invention concerne un procédé de fabrication d'esters alkyliques et de glycérine à partir d'une huile végétale brute ou semi-raffinée et d'un monoalcool aliphatique comprenant une étape de purification poussée permettant d'éliminer les espèces à base de phosphore, calcium, magnésium, zinc ou fer insolubles dans les conditions de température du réacteur catalytique hétérogène.
Abstract:
A method for reducing halide concentration in a hydrocarbon product having an organic halide content from 50 to 4000 ppm which is made by a hydrocarbon conversion process using an ionic liquid catalyst comprising a halogen-containing acidic ionic liquid comprising contacting at least a portion of the hydrocarbon product with at least one molecular sieve having pore size from 4 to 16 Angstrom under organic halide absorption conditions to reduce the halogen concentration in the hydrocarbon product to less than 40 ppm is disclosed.
Abstract:
A method for separating and recovering ultrafine particulate solid material from a suspension or slurry of the solid material and a hydrocarbon liquid by precipitation or flocculation of a heavy fraction of the hydrocarbon liquid with an effective amount of a precipitation or flocculation agent such that the precipitated heavy fraction encapsulates the particulate solid material. The method further comprises coking the precipitated heavy fraction and grinding the coked product to an ultrafine size.