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WO/2018/189598A1 |
Systems and methods for integrated glycerol carbonate and/or urea production. This disclosure pertains to development of a process for production of glycerol carbonate and/or urea from ammonia, carbon dioxide and glycerol. The process in...
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WO/2018/185459A1 |
A process for the production of formaldehyde-stabilised urea is described comprising the steps of: (a) generating a synthesis gas; (b) subjecting the synthesis gas to one or more stages of water-gas shift in one or more water-gas shift r...
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WO/2018/168573A1 |
When recovering and utilizing the urea and NH3 contained in a gas that contains urea dust and NH3 and has been discharged from a urea granulation step, an aqueous urea solution to be fed to the urea granulation step is prevented from suf...
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WO/2018/166873A1 |
Process for the co-production of methanol and ammonia together with urea production from a hydrocarbon feed without venting to the atmosphere carbon dioxide captured from the methanol or ammonia synthesis gas and without using expensive ...
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WO/2018/162594A1 |
A process for producing UREA, said process comprising the steps of: - purification of a hydrocarbon feed gas removing Sulphur and/or chloride components if present, - reforming the hydrocarbon feed gas in a reforming step where the steam...
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WO/2018/158126A1 |
The invention relates to a method for cleaning the exhaust air of a granulating system for producing a urea-containing granulate. A gas flow which contains a urea-containing dust and ammonia is brought into contact with a sulfuric acid s...
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WO/2018/154560A1 |
The invention provides aqueous hydrohalide liquid compositions containing more than 50% hydrohalide and less than 8% water. A method is provided for preparing a composition containing up to 95% urea hydrobromide, which is liquid at ambie...
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WO/2018/153630A1 |
A process and system for removing ammonia from ammonia-containing purge gas of a urea plant, the process comprising: contacting said ammonia- containing purge gas with carbon dioxide at a low temperature, reaction of ammonia to form crys...
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WO/2018/143492A1 |
The present invention relates to an aminobenzaldehyde derivative and an amino acid chiral extractant comprising the same, wherein the amino acid chiral extractant can allow amino acids in an aqueous solution to be extracted with high chi...
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WO/2018/122379A1 |
The present invention provides a method for processing a gas stream comprising urea dust and ammonia, comprising the steps of: (a) separating said ammonia from said urea dust, (b) converting said urea dust into an aqueous urea solution, ...
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WO/2018/122377A1 |
The present invention provides a method for recovery of urea dust and ammonia from a gas stream, being a waste air stream from granulation, prilling or product cooling process steps in a urea plant, comprising the steps of: (i) contactin...
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WO/2018/091158A1 |
Integrated process for the production of urea and urea-ammonium nitrate, comprising: reacting ammonia and carbon dioxide to form a reaction mixture (4) containing urea and unconverted materials, and also comprising the recovery of unconv...
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WO/2018/091410A1 |
The invention relates to a method for producing ammonia and urea in a common facility or alternatively (according to requirement) only producing ammonia in said facility, in which a raw synthesis gas flow containing at least the gases hy...
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WO/2018/092057A1 |
An integrated process for production of urea and UAS comprises: a urea synthesis step carried out in a urea synthesis reactor (4); a recovery and concentration step, wherein a urea solution produced in the urea synthesis step is progress...
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WO/2018/087415A1 |
The invention relates to a method for obtaining polymers bearing isocyanate groups from amino polymers, with both aromatic and aliphatic amines, in a simple manner and under mild conditions. The polymers bearing isocyanate groups can be ...
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WO/2018/078318A1 |
An integrated process for the production of a formaldehyde-stabilised urea is described comprising the steps of: (a) generating a synthesis gas comprising hydrogen, nitrogen, carbon monoxide, carbon dioxide and steam in a synthesis gas g...
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WO/2018/078661A1 |
A raw syngas coming from HT gasification of organic wastes, once cooled in a proper heat recovery boiler or in a quencher is treated in a scrubbing section where, by adding an acidic solution followed by alkaline solution and by a WESP, ...
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WO/2018/080007A1 |
The present invention relates to a preparation method for removing triuret causing turbidity in urea water and to urea water prepared thereby and, more specifically, to a preparation method wherein urea is introduced to de-ionized water ...
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WO/2018/051313A1 |
A system (2) for analysis of vent gas of a urea plant (1), comprising: a Raman spectroscope (22); a sampling conduit (24) that connects the spectroscope (22) to a main pipe (20) of the urea plant (1) for conveying a sample stream (25) to...
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WO/2018/045229A1 |
The invention relates to substituted ureas, and compositions comprising the same, which in certain embodiments are useful for treating and/or preventing pain in a subject in need thereof.
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WO/2018/011327A1 |
The invention relates to a method for producing an NOx reductant AUS 32 solution (diesel exhaust fluid) comprising at least the mixing of water and a particulate composition containing (i) urea; and an additive comprising component (ii):...
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WO/2017/202629A1 |
The invention relates to a method (100) in which a high-oxygen substance flow (b) is formed under the incorporation of an air separating process (10), and said high-oxygen substance flow (b) is subjected to an oxidative methane coupling ...
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WO/2017/204464A1 |
The present invention relates to a high-purity urea water manufacturing apparatus having a full discharge type solid-liquid mixing piping system for ships and industrial purposes and to a high-purity urea water manufacturing method using...
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WO/2017/202993A1 |
The invention relates to a method (100) in which a high-oxygen substance flow (b) is formed under the incorporation of an air separating process (10), and said high-oxygen substance flow (b) is subjected to an oxidative methane coupling ...
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WO/2017/196167A1 |
Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles ...
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WO/2017/192031A1 |
Disclosed is a novel method of controlling the formation of biuret in urea production, and particularly reducing, preventing or reversing such formation. This is accomplished by adding liquid ammonia to a urea aqueous stream. This additi...
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WO/2017/192032A1 |
Disclosed is a novel method of controlling the formation of biuret in urea production. This is accomplished by reducing or preventing the formation of biuret in a concentration section, particularly in one or more concentrators or evapor...
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WO/2017/178910A1 |
The present invention relates to an improved process for preparation of carmustine (I). The present invention also relates to preparation of 1,3-bis(2-chloroethyl)urea (II) an intermediate used in preparation of carmustine.
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WO/2017/171546A1 |
Disclosed is a urea plant wherein, in deviation from conventional plants, a high-pressure synthesis section is operated with two different pressures. The synthesis section comprises a reactor, which is operated under a first high pressur...
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WO/2017/157561A1 |
Combined apparatus (1) for the synthesis of urea from ammonia and carbon dioxide, comprising an internal wall (3) which delimits two coaxial zones (4) inside the apparatus, operating respectively as reaction (4) and condensation (5)zones...
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WO/2017/148870A1 |
The invention relates to the integrated synthesis of NH3 from syngas with the separation of CO2 and to the synthesis of urea from the NH3 and the separated CO2.
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WO/2017/140465A1 |
A high pressure melamine plant comprising a synthesis section and a melamine purification section, wherein the synthesis section provides a first melamine-containing stream (6), and said melamine purification section comprises: a quenche...
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WO/2017/134691A1 |
A process and apparatus for producing a nitrogen based fertilizer, urea, from carbon containing municipal and industrial wastes, comprises high temperature gasification to produce hydrogen and to make ammonia, and then combining ammonia ...
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WO/2017/103243A1 |
The invention relates to a particulate composition comprising (i) urea; and an additive comprising one or both of components (ii) and (iii): (ii) combination of at least one polymer or oligomer containing amino groups and at least one fu...
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WO/2017/103564A1 |
A process for the production of formaldehyde-stabilised urea is described comprising the steps of: (a) generatinga synthesis gas comprising hydrogen, nitrogen, carbon monoxide, carbon dioxide and steam in a synthesis gas generation unit,...
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WO/2017/102546A1 |
The invention relates to a method for the separation of carbon dioxide from CO2-containing gases and to a device for the provision of carbon dioxide for the synthesis of urea.
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WO/2017/097981A1 |
A shell-and-tube stripper for carbamate decomposition and ammonia recovery from a urea solution comprising a bundle of heated tubes, said tubes being fed with said urea solution and carbon dioxide as stripping medium, the urea solutions ...
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WO/2017/055052A1 |
A process for removing hydrogen and methanol from a CO2 stream which contains hydrogen and methanol as contaminants, wherein hydrogen and methanol are removed by contacting the CO2 stream with a catalyst which oxidizes hydrogen to water ...
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WO/2017/043390A1 |
The present invention provides a method and a device capable of producing urea more efficiently. In the present invention, prior to removing unreacted materials from a urea synthesis solution obtained from a stripper, the pressure of the...
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WO/2017/043391A1 |
The present invention provides a urea production method and production device, capable of increasing the rate of conversion into urea and decreasing the amount of steam consumed. In the present invention, the reactor temperature is raise...
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WO/2017/034525A1 |
A method comprising: irradiating ultraviolet light on at least one solid composite electrode comprising at least one semiconductor material (or a colloidal form of the material) which is in contact with at least one liquid solution (e.g....
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WO/2017/032514A1 |
A combined reactor and condenser for the synthesis of urea from ammonia and carbon dioxide, including a condenser section coupled to a reaction section, comprising inputs directed to said condenser section for a gaseous stream comprising...
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WO/2017/017036A1 |
The present invention relates to ureaurethanes of the following formula (1) in which at least one of the R1 or R2 radicals is a mono- or polyunsaturated, branched or unbranched alkenyl or alkynyl radical having 12 to 24 carbon atoms, n i...
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WO/2017/014632A1 |
The present disclosure relates to a corrosion resistant duplex stainless steel (ferritic austenitic alloy) which is suitable for use in a plant for the production of urea; and uses thereof. The disclosure also relates to objects made of ...
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WO/2017/013181A1 |
The present disclosure relates to the use of an object made of a duplex stainless steel, duplex stainless steel comprising in weight% (wt%): c max 0.020; Si max 0.8; Mn max 1.5; Cr 29.0 to 33.0; Ni 6.0 to 9.0; Mo 3.0 to 5.0; N 0.40 to 0....
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WO/2017/013180A1 |
The present disclosure relates to a corrosion resistant duplex stainless steel (ferritic austenitic alloy) which is suitable for use in a plant for the production of urea; and uses thereof. The disclosure also relates to objects made of ...
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WO/2017/013573A1 |
In accordance with the present invention, disclosed herein is a fertilizer core particle and fertilizer granule. The fertilizer core particle has one or more fertilizer additives, one or more binders comprising a wax, and one or more pH ...
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WO/2017/009498A2 |
Disclosed is a method for producing organic urea made by mixing and reacting liquid ammonia (NH3) with carbon dioxide gas (CO2), forming (5) ammonium carbamate; decomposing (7) the carbamate; synthesising (8) the urea; and evaporating (9...
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WO/2016/200027A1 |
The present invention relates to: an apparatus for preparing a high purity urea solution in order to prepare and provide an expensive high-grade urea solution by highly purifying an inexpensive low-grade urea solution containing impurity...
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WO/2016/153354A9 |
Disclosed is a method for the integrated production of two different urea products. One is an aqueous urea solution suitable for use in NOx abatement (generally indicated as Diesel Exhaust Fluid – DEF). The other is a solution used as ...
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