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WO/1999/000466A1 |
The invention concerns novel fuels consisting of a liquefied mixture of at least two gases. The invention is applicable to diesel engines with controlled ignition.
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WO/1998/059021A1 |
The gas that is to be dried is fed to an absorber (1), where it is brought into contact with a glycol in the countercurrent. The glycol absorbs the humidity from the gas and the impurities. The glycol loaded with water and impurities is ...
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WO/1998/059206A1 |
This invention relates to a process for liquefying a pressurized gas stream (10) rich in methane in which the liquefication of the gas stream occurs in a heat exchanger (33) being cooled by a closed-loop multi-component refrigeration sys...
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WO/1998/059205A2 |
This invention relates to a process for liquefying a gas stream (10) rich in methane and having a pressure above about 3103 kPa (450 psia). The gas stream is expanded (30) to a lower pressure to produce a gas phase and a liquid product (...
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WO/1998/053031A1 |
At pressures over 1,000 psia, it is advantageous to add to natural gas an additive which is a C�2? or C�3? hydrocarbon compound or a mixture of such compounds. Above a lower limit (which varies with the additive being added and the p...
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WO/1998/053032A1 |
For storage of natural gas at pressures over 1,000 psia, it is advantageous to add to natural gas an additive which is a C�2? or C�3? hydrocarbon compound, or a mixture of such hydrocarbon compounds. Above a lower limit (which varies...
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WO/1998/047839A1 |
A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is divided into first and second streams, and the second stream is cooled and ex...
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WO/1998/044078A1 |
A system for recovering liquid hydrocarbons from hydrates on an ocean floor includes a vessel, a positioning subsystem coupled to the vessel for holding the vessel in a desired location over a hydrate formation, a hydrate recovery subsys...
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WO/1998/040922A1 |
This is a procedure for producing mechanical power and a hybrid power generation unit for practicing such a process. In particular, the procedure uses a thermal or catalytic cracker partially to crack or partially to pyrolyze a liquid or...
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WO/1998/038132A1 |
A zeolitic molecular sieve is described, the cavities of which are partially blocked. This partial blocking essentially concerns the $g(b) cages which are preferably 50 to 100 % blocked. Preferred blocking agents are alkali metal and/or ...
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WO/1998/036038A1 |
The present invention relates to a process and an integrated plant to be used in this process for the preparation of synthetic fuel (synfuel), liquefied natural gas, and production of electrical energy. A part of the energy produced is u...
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WO/1998/029682A1 |
The new porous mass without asbestos contents is intended for the filling of the vessels for storaging, transportation and consumption of acetylene, based on calcium silicates, obtained from lime, quartz and boric acid, containing up to ...
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WO/1998/029369A1 |
Gas is recovered from a clathrate hydrate (100) by providing the clathrate hydrate (100) within an occupying zone (102), positioning a source of electromagnetic radiation (200) within the clathrate hydrate occupying zone (102), and apply...
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WO/1998/029653A1 |
A boiler mono-fuel combustion fuel (1) is subjected to partial treatment to be separated into a distillate component (3) and residue (4), the distillate component (3) or the distillate component (3), to which a fuel (101) for gas turbine...
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WO/1998/027033A1 |
The present disclosure provides a process for continuously producing clathrate hydrate. This process includes the step of: (a) pressurizing a hydrate-forming gas to an elevated pressure and cooling the hydrate-forming gas below the gas-w...
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WO/1998/027185A1 |
The present invention relates to a process for the dry gasification of a mixed light hydrocarbon to fuel gas without residual liquid, which comprises the following steps: (1) filtering the liquid hydrocarbon with boiling range of $m(F)80...
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WO/1998/025871A1 |
The present invention provides an improved method for recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.
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WO/1998/023843A1 |
The instant invention relates to the use of water-soluble polymers comprising structural elements of formula (I) wherein each R is independently H or C�1-5?-alkyl; X is H, an alkaline or earth alkaline metal or a quaternary ammonium gr...
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WO/1998/023359A1 |
The invention provides a process for the removal of sulphides, including hydrogen sulphide, carbonyl sulphide and carbon disulphide, from a gas stream by scrubbing the gas with an aqueous washing liquid and treating the washing liquid wi...
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WO/1998/022557A1 |
The present invention relates to the use of polymers, comprising one or more different anionic monomers, one or more different cationic monomers and possibly non-ionic monomers as additives to prevent the formation, growth and/or agglome...
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WO/1998/019980A1 |
A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a...
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WO/1998/018542A1 |
A process for dehydrating gaseous fluids, such as natural gas, in which the gaseous fluid is contacted with a dehydrating composition comprising a glycol, at least one aromatics solubility depressant and a dissolved salt comprising at le...
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WO/1998/017374A1 |
Sulphur compounds are removed from a gas and/or liquid stream by an agent comprising at least one compound of manganese and at least one compound of iron. Desulphurization agent comprising at least one compound of manganese and at least ...
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WO/1998/017609A1 |
A process for the recovery of propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled and/or expanded to partially condense it, then separated to provide one or more C�3? c...
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WO/1998/016719A1 |
Gas hydrates are prevented by adding at least one polymer with recurring succinyl units.
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WO/1998/004337A1 |
Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide in an autogenously-formed aqueous acid medium according to the equation: SO�2? + 2H�2?S $m(7) 2H�2?O + 3S the sulfur being removed from the aqueous phase....
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WO/1998/003615A1 |
The invention concerns a method of inhibiting gas hydrate formation, an amine oxide or salts thereof being added to the aqueous phase in multiphase mixtures comprising water, gas and optionally condensate.
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WO/1998/002508A2 |
According to the present invention, the ignition, combustion and explosion of hydrogen-air mixtures are dependent primarily on the presence of active intermediates (free atomic hydrogen, atomic oxygen and hydroxyl radicals) that serve as...
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WO/1998/002501A1 |
The present invention provides a method for scavenging sulfyhydryl compounds from sour hydrocarbon substrates, preferably crude oils, refined distillate streams, and natural gas, by mixing said substrates with preferably substantially wa...
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WO/1997/048480A1 |
Hydrotalcite-like materials are stable in the crystalline oxide structure and essentially reversible in anion exchange. A novel process of sulfur oxide sorption is provided utilizing these hydrotalcite materials as contact solids. Large ...
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WO/1997/046503A1 |
Removing carbon dioxide, ethane and heavier components from high pressure natural gas (10) comprises: partly condensing and expanding the high pressure natural gas (10) to obtain a gaseous stream (30) enriched in methane and carbon dioxi...
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WO/1997/045887A1 |
Sulfur and sulfur compounds are removed from a gas stream, such as a hydrocarbon fuel gas stream so as to render the gas stream suitable for use in a fuel cell power plant. Natural gas and recycled hydrogen enters the hydrodesulfurizer a...
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WO/1997/040307A1 |
A process and a system for recovering VOC vapor from crude oil during loading of crude oil in a tanker and during transportation and subsequent unloading of the crude oil, and full or partial utilization of the vapor as an energy source ...
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WO/1997/038065A1 |
A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant wherein said fluid stream is passed through a...
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WO/1997/026494A1 |
A plant for producing natural gas hydrate comprises three stages (i), (ii) and (iii). Stage (i) comprises three pressure vessels (A1, A2 and A3), stage (ii) two pressure vessels (A4 and A5), and stage (iii) the pressure vessel (A6). The ...
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WO/1997/026070A1 |
This invention relates to a method for removing sulfur-containing contaminants in the form of mercaptans and H2S from natural gas, which may also contain CO2 and higher aliphatic and aromatic hydrocarbons, and recovering elemental sulfur...
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WO/1997/026069A1 |
The invention relates to a method for removing sulfur-containing contaminants in the form of mercaptans and H2S from a hydrocarbon gas, which may also contain CO2 and higher aliphatic and aromatic hydrocarbons, and recovering elemental s...
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WO/1997/019746A1 |
An apparatus comprises a conduit member extending from a first source (5) of a carrier gas and from a second source of an odorant (4) to a conduit system (1) for a gas. The conduit member is configured in such a manner that the odorant i...
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WO/1997/019151A1 |
At pressures over 1,000 psia, it is advantageous to add to natural gas an additive which is a C2 or C3 hydrocarbon compound or a mixture of such compounds. Above a lower limit (which varies with the additive being added and the pressure)...
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WO/1997/018885A1 |
The gas stream which is produced in and emanates from landfills, anaerobic digesters and other waste gas streams is treated to produce a purified gas which is essentially a hydrocarbon such as methane and which can be used as the fuel so...
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WO/1997/019152A1 |
For storage of natural gas at pressures over 1,000 psia, it is advantageous to add to natural gas an additive which is a C2 or C3 hydrocarbon compound, or a mixture of such hydrocarbon compounds. Above a lower limit (which varies with th...
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WO/1997/016399A1 |
A methane concentration method for removing carbonic acid gas from an anaerobic digestive fermentation gas and concentrating and recovering methane by using an apparatus (10) including a pre-stage module (11) with a membrane (11a) and a ...
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WO/1997/016509A1 |
Acetylene is stored at elevated pressure by charging with acetylene at elevated pressure a pressure vessel (typically a gas cylinder) containing carbonaceous adsorbent able reversibly to adsorb acetylene. The adsorbent has: a) a specific...
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WO/1997/013825A1 |
A method of removing hazardous sulfur compounds, such as hydrogen sulfide and sulfur dioxide, from sour crude oil and sour natural gas. An aqueous composition of an amine oxide surfactant, and preferably a mixture of an amine oxide surfa...
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WO/1997/013824A1 |
A method for controlling the formation of gas hydrate crystals in a fluid mixture by admixing with said fluid mixture a polyoxyalkylenediamine in an amount effective to prevent and/or inhibit crystal growth.
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WO/1997/007320A1 |
A method for inhibiting the formation and/or agglomeration of clathrate hydrates in a petroleum fluid stream containing water is disclosed. The disclosed method uses predetermined inhibitors having a guest group, a polymer backbone, and ...
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WO/1996/041784A1 |
Clathrate hydrate formation in petroleum fluid streams is inhibited by adding water soluble polymers having N-vinyl amide or N-allyl amide units to the streams. Each N-vinyl amide and N-allyl amide unit has two substituent groups, R1 and...
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WO/1996/041785A1 |
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pip...
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WO/1996/041786A1 |
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents involves treating the fluid with an inhibitor comprising a substantially water soluble polymer having a polymer backbone with a pe...
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WO/1996/041834A1 |
The instant invention relates to novel copolymers of N-vinyl amides and acrylamides and N-allyl amides and acrylamides. The polymers are used for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituen...
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