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Matches 1 - 50 out of 2,007

Document Document Title
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):...  
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 ...  
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...  
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 ...  
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 ...  
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...  
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...  
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.  
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...  
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...  
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.  
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...  
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 ...  
WO/2017/108629A3
A system for synthesizing nitrogenous compounds from organic waste, the system comprising: a mineralization device (110); a catalyzer (112); a freezing-up system (121); an electrolyzer (140); and an ammonia synthesis reactor (151) for sy...  
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...  
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,...  
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.  
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 ...  
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 ...  
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...  
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...  
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....  
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...  
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...  
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 ...  
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....  
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 ...  
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 ...  
WO2017009498A2
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...  
WO/2017/009498A3
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...  
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...  
WO/2016/171562A1
Disclosed is an integrated process for the production of urea and melamine, as well as a system for carrying out the process. The invention thereby pertains to an integrated process of the type wherein off-gas obtained from the productio...  
WO/2016/165650A1
Disclosed are a co-crystal of olaparib and urea and a preparation method therefor. Specifically disclosed is a co-crystal form A, and an X-ray powder diffraction pattern of this crystal form has characteristic peaks at points where 2thet...  
WO/2016/159336A1
The present invention is a urea production method characterized by comprising a first concentration step that concentrates an aqueous urea solution, a granulating step that produces solid urea from a concentrated aqueous urea solution ge...  
WO/2016/156015A1
Process and respective reactor for urea or melamine synthesis, comprising sonication treatment of at least part of a reaction liquid mass or two-phase mixture contained inside said reactor.  
WO/2016/153354A1
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 ...  
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 ...  
WO/2016/132091A1
A process is described for the production of formaldehyde, comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream; (b) separating said formaldehyde-co...  
WO/2016/132092A1
A process for the production of 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 generation unit...  
WO/2016/124413A1
Method for revamping a plant for high pressure melamine synthesis, wherein the plant has a high pressure section which includes essentially a melamine reactor (1) fed with urea melt, and the raw melamine produced inside said reactor is t...  
WO/2016/114670A1
The invention pertains to the synthesis of carbamate and urea compounds. In particular the invention is directed to the synthesis of carbamate and urea compounds which may be used in the production of compounds that are used to stabilize...  
WO/2016/109622A1
The present invention is directed to a method for enhancing the rate of formation of the reaction products of a carboxylic acid and a urea having the formula (I) where R1, R2, R3 and R4 are the same or different and are selected from the...  
WO/2016/099267A1
Disclosed is a method for the removal of urea dust from the off-gas of a finishing section of a urea production plant. the method comprises subjecting the off-gas to quenching with water so as to produce quenched off-gas. The quenched of...  
WO/2016/099269A1
The present invention presents a stripping process for urea production with a total recycle. An important characteristic of the described urea process is a substantially complete CO 2 conversion, which eliminates the need for carbamate r...  
WO/2016/083005A1
Plant for the synthesis of urea, comprising: a synthesis section comprising at least one reactor, a compressor for supplying CO2 to said synthesis section, a gas turbine for the operation of said CO2 compressor and a heat recovery steam ...  
WO/2016/074813A1
A process for the finishing of urea comprising: (a) removing water from an aqueous urea solution in a first evaporation and condensation section, obtaining a urea melt; (b) subjecting said urea melt to a finishing treatment comprising gr...  
WO/2016/048695A1
A compound for imparting water repellency and optionally stain release to substrates wherein the compound is prepared by reacting (a) at least one isocyanate group-containing compound, (b) at least one isocyanate-reactive compound and (c...  
WO/2016/047356A1
The present invention relates to a process for producing a high-purity aqueous urea solution while utilizing a urea production process at least including a urea synthesis step in which urea is synthesized from feed materials to produce a...  
WO/2016/049282A1
The invention relates to a compound prepared by (i) reacting (a) at least one compound selected from diisocyanate, polyisocyanate, or mixture thereof; (b) at least one isocyanate-reactive compound selected from a fluorinated alcohol; a c...  
WO/2016/010432A1
Disclosed is a process for the preparation of a urea product suitable for being diluted with water so as to form an aqueous urea comprising solution for use in a unit for the reduction of NOx in combustion engine exhaust gases, also know...  

Matches 1 - 50 out of 2,007