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8029661 |
Method for on-line monitoring of wax crystallization
The determination of wax crystal particle size and population is used to monitor the performance of wax crystallizers used in lubricant oil processing using solvent dewaxing. The wax crystal...
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7351324 |
Liquid fuel applying to various combustion systems with high heating value, high volatile, low pollution and low price
The present invention relates to a liquid fuel blended by dissolving crude pentane into the heavy oil with different proportions, and applied to different combustion system respectively; the fuel...
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7264710 |
Process and apparatus for treating heavy oil with supercritical water and power generation system equipped with heavy oil treating apparatus
The reforming of heavy oil with supercritical water or subcritical water is accomplished by mixing together supercriticai water, heavy oil, and oxidizing agent, thereby oxidizing vanadium in heavy...
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7132042 |
Production of fuels and lube oils from fischer-tropsch wax
Dewaxed fuel and lubricant base stocks are made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at...
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6827842 |
On-line determination of wax crystallization temperature of waxy solvent stream
A laser beam reflected by wax crystals is used in determining the wax crystallization temperature of a hot dewaxing solvent upstream of solvent chillers. This is automatically achieved by an...
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6793803 |
Dewaxing process using zeolite SSZ-54
The present invention relates to the use of crystalline zeolite SSZ-54 as a catalyst in a process for dewaxing hydrocarbon feedstocks.
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6413414 |
Process for separation of dewaxed lube oil into light and heavy products
Methods and apparatus to separate a light lube stock product and a heavy lube stock product from heavy dewaxed lube oils are described which maintain product specifications while utilizing...
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6074548 |
Process for obtaining paraffin or paraffin fractions
A process for fractional crystallization of paraffin from mineral oil based and synthetic crude paraffin, wherein crude paraffin having a high oil content is crystallized in a crystallizer equipped...
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5998640 |
Method for recovering oil from an oil-bearing solid material
A method and apparatus for continuously removing oil from oil-bearing solids such as tar sands, vegetables or other solid materials using a solvent is provided. By providing a pressure differential...
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5730858 |
Process for converting wax-containing hydrocarbon feedstocks into high-grade middle distillate products
The wax-containing hydrocarbon feedstocks are pre-treated by contacting them with a homogeneous solution containing 1-5 vol. % of an acid diluted in an alcohol/water mixture (preferably containing...
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5301125 |
Spectroscopic determination of amount of one constituent of a fluid mixture in another constituent or in the fluid mixture itself, following separation of the mixture into its constituents
A method (and apparatus) is disclosed for the spectroscopic determination of the amount αNn of one constituent N of a fluid mixture 0 in another constituent n of the mixture, following separation ...
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5015357 |
Wax sweating
An early meltdown process of wax sweating is provided which enhances the efficiency, quality, product yield, and throughput of wax. In the early meltdown process, slack wax is crystallized. The...
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4824553 |
Wax sweating process
An early meltdown process of wax sweating is provided which enhances the efficiency, quality, product yield, and throughput of wax. In the early meltdown process, slack wax is crystallized. The...
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4604261 |
Hydroprocessing reactor for catalytically dewaxing liquid petroleum feedstocks
A hydroprocessing trickle reactor construction which will facilitate the catalytic dewaxing of liquid petroleum or lube feedstocks in a highly efficient and economical manner, particularly through...
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4548755 |
Process for the extractive production of valuable natural waxes
Process for the extractive production of valuable, natural waxes from fossil and/or freshly grown vegetable and/or animal starting material by extraction of the starting material in an extraction...
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4477333 |
Dewaxing by a combination centrifuge/catalytic process including solvent deoiling
A hydrocarbon dewaxing process comprising the steps of: (a) chilling the waxy hydrocarbon feed to be dewaxed in the absence of solvent to crystallize a portion of the hard wax; (b) introducing the...
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3960705 |
Conversion of foots oil to lube base stocks
Foots oil, the by-product left when high quality wax is recovered by a solvent dewaxing process, is usually used as cracker feed stock. There is disclosed a method of converting it to higher...
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3232862 |
Refining and stabilizing petroleum wax
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3159563 |
Wax-oil separation process
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2949418 |
Separation of wax from oil
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2847356 |
Flotation dewaxing
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