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Matches 1 - 50 out of 2,170

Document Document Title
WO/2021/056665A1
Disclosed in the present invention are a gemini surfactant for oil displacement, and a preparation method for and an application of the gemini surfactant. The gemini surfactant is 1,3-dialkyl-1,3-dipolyoxyethylene ether urea or 1,3-dialk...  
WO/2021/032819A1
The invention relates to a method for producing a urea solution with a target urea concentration using water flows recovered from the urea production process. At least part of the water flows recovered from the urea production process ar...  
WO/2021/027237A1
The present invention relates to a method for preparing a supercritical carbon dioxide thickener for the exploitation of tight oil and gas reservoirs. The method can solve the problem of oil and gas deposits being damaged as a result of ...  
WO/2021/018536A1
The invention discloses a reformer arrangement for production of synthesis gas and/or hydrogen, at least comprising the following elements: - a main reformer (1) connected to a main reformer reactant feed (2) and a main reformer product ...  
WO/2021/008783A1
A process for synthesis of urea from ammonia and carbon dioxide comprising the synthesis of urea in parallel in a first urea reactor (1) at a first urea synthesis pressure and in a second urea reactor (2) at a second and lower urea synth...  
WO/2021/006729A1
The application provides in an aspect a process for producing urea in a urea plant comprising a high pressure synthesis section comprising a reactor, wherein the process comprises reacting NH3 feed and CO2 feed under urea formation condi...  
WO/2021/004713A1
The invention relates to devices for producing granulated urea with a low biuret content, comprising a synthesizing unit, an evaporator unit, a feed pump, a granulation unit, and multiple lines with different diameters or different or id...  
WO/2021/001121A1
A reactor for the synthesis of urea comprising a vertical shell and perforated baffles or trays (3) arranged to define compartments of the reactor, wherein each baffle comprises an array of individual perforated tiles (10) wherein each t...  
WO/2020/250194A1
The present disclosure relates to cogeneration of power and one or more chemical entities through operation of a power production cycle and treatment of a stream comprising carbon monoxide and hydrogen. A cogeneration process can include...  
WO/2020/235999A1
Disclosed is a urea finishing method including an off-gas treatment, the method comprising urea finishing and supplying the off-gas to a quenching zone and to a scrub column comprising a sump and a venturi stage, wherein the sump has a s...  
WO/2020/225093A1
Shell-and-tube strippers for stripping a urea/carbamate mixture, related systems, methods, and uses. The stripper comprises a shell, a plurality of tubes disposed within the shell, and a heating fluid distributor for homogenizing the flo...  
WO/2020/221690A1
The invention relates to a method for producing urea, comprising: a) producing formamide on the basis of carbon dioxide, hydrogen and ammonia, wherein methyl formate or ammonium formate is formed as an intermediate product in a catalytic...  
WO/2020/221691A1
The invention relates to the use of a ruthenium-phosphine complex as a catalyst for the catalytic synthesis of urea, including the conversion of formamide or formamide with ammonia in the presence of the catalyst, thereby forming urea an...  
WO/2020/212926A1
A urea synthesis reactor (2) is provided with a feeding system (10) for feeding the reactor (2) with ammonia, carbon dioxide and non-converted reactants recovered downstream of the reactor (2); the feeding system (10) comprises a turboch...  
WO/2020/196553A1
The purpose of the present invention is to provide a method that enables efficient and safe production of an N-substituted trihaloacetamide which also serves as a synthetic intermediate for isocyanate compounds, carbamate compounds, urea...  
WO/2020/187583A1
Parallel co-production process for the production of methanol and urea product from a hydrocarbon containing feed-stock by means of primary and secondary reforming, intermediary methanol and ammonia formation and conversion of the ammoni...  
WO/2020/187585A1
Parallel co-production process for the production of methanol and urea product from a hydrocarbon containing feed-stock by means of autothermal reforming, intermediary methanol and ammonia formation and conversion of the ammonia to urea ...  
WO/2020/183717A1
In a urea synthesis process, temperature distribution in a submerged condenser is reduced. The process includes: synthesizing urea from NH3 and CO2 to generate a urea synthesis solution; by heating the solution, decomposing ammonium carb...  
WO/2020/183745A1
Provided are a new urea production method and device that enable heat recovery from a fluid at a relatively low temperature. This urea production method includes a synthesis step, a high-pressure decomposition step, and a condensation st...  
WO/2020/144726A1
A fertilizer production plant for producing a fertilizer from a raw material gas containing methane comprises: a reforming unit that reforms a first raw material gas, which is a part of the raw material gas, to obtain a reformed gas; an ...  
WO/2020/130817A1
The invention pertains to a urea production process using a high pressure stripper and a low pressure decomposer connected to a low pressure carbamate condenser which is in heat exchanging contact through a wall with a sub - atmospheric ...  
WO/2020/117408A1
Organic isocyanates are converted to ureas by heating in the presence of certain cobalt, magnesium, chromium and lanthanide series organometallic catalysts. The process requires no water or other reactants. The process is particularly us...  
WO/2020/104197A1
A process for synthesis of urea from CO2 and NH3 wherein a steam flow (13) produced in the condenser (3) of a high-pressure synthesis loop is compressed to raise its pressure and temperature before using the steam as a heat source for a ...  
WO/2020/104484A1
The present invention relates to the synthesis of N-trifluoromethylcarbonyl compounds starting from isothiocyanates, which can be converted into N-trifluoromethylcarbamoyl fluorides or similar compounds, which later on can be derivatized...  
WO/2020/095221A1
The present invention involves obtaining steam and steam condensate having relatively high utility value from low-pressure steam condensate generated when low-pressure steam is consumed in a purification step and/or a concentration step....  
WO/2020/091867A1
Monoisocyanate impurities are removed from a process stream obtained when solvent is separated from a polyisocyanate product. The monoisocyanates are reacted with amine compounds at specific molar ratios to produce ureas. The ureas can b...  
WO/2020/075082A1
The invention relates to a process for the synthesis of carglumic acid from L-glutamic acid and sodium cyanate by treatment with a lithium compound in an aqueous medium. The process according to the invention is easily industrially scala...  
WO/2020/055915A1
The present disclosure provides a method of biocementation comprising contacting a granular, cohesionless soil with a solution, wherein the solution comprises urea, urease, a source of calcium ions, and a source of non-urease proteins, w...  
WO/2020/042559A1
The present invention relates to the technical field of natural substance extracting, and disclosed is a method for synchronously extracting lycopene and citrulline from a watermelon. The method for synchronously extracting lycopene and ...  
WO/2020/042557A1
The present invention relates to the technical field of natural substance extraction. Disclosed is a method for extracting citrulline from a watermelon. The method for extracting citrulline from a watermelon in the present invention comp...  
WO/2020/025815A1
The present invention relates to a process for the production of carbon dioxide and ammonia for the production of urea or ammonium carbamate from residual gases in the steel and metal industries, in particular basic oxygen furnace (BOF) ...  
WO/2020/021998A1
Provided are a method and device for manufacturing urea, whereby heating in a step for preheating or medium-pressure decomposition of starting material ammonia can be performed at a relatively low pressure while avoiding a decrease in th...  
WO/2020/009016A1
The present invention provides a method for producing an organic compound in which functional groups are reacted with each other without the use of a solvent. The present invention pertains to a method for producing an organic compound c...  
WO/2020/003234A1
A process for converting an anhydrous off-gas stream from melamine synthesis plants to urea and the relative plant for the direct conversion of an anhydrous off-gas stream from melamine synthesis plants into urea, are described.  
WO/2019/221192A1
The present invention provides a method for producing an amino acid aminoalkyl ester or an inorganic acid salt thereof by reacting a compound represented by general formula (I) or a compound represented by general formula (III), or a sal...  
WO/2019/219808A1
A stripper for stripping a urea/carbamate mixture. The stripper comprises a shell and a plurality of tubes disposed within the shell. A shell-side space is provided between the tubes and the shell. A first heating fluid inlet, a second h...  
WO/2019/198600A1
[Problem] To provide a method for producing urea that curbs corrosion of a urea plant and increases the reaction yield. [Solution] A method for producing urea from raw production materials including NH3 and CO2 at a urea production plant...  
WO/2019/180066A1
The present invention relates to a method for the production of an urea ammo- nium sulphate (UAS) composition, wherein said UAS composition comprises 1 to 40 weight% of ammonium sulphate (AS) relative to the total weight of the UAS compo...  
WO/2019/160037A1
The purpose of the present invention is to provide methods for producing a carboxamide compound, a sulfonamide compound, and an ester compound using an acid halide. The methods for producing a carboxamide compound, a sulfonamide compound...  
WO/2019/149937A1
The invention relates to a virtual sensing method and system for controlling at least one composition variable in a urea production process, based on a plurality of online measured process variables and a model, wherein the model is used...  
WO/2019/145169A1
Plant for the synthesis of melamine starting from urea, wherein the stream of offgas containing NH3 and CO2 produced by the synthesis of melamine is converted into urea in a dedicated urea plant.  
WO/2019/123354A1
It is provided a duplex stainless steel for use in a urea production plant and/or in a urea production process, containing in weight percentage (%w): C 0,03 or less; Si 0,5 or less; Mn 2,5 or less; Cr from more than 30,0 to 35,0; Ni from...  
WO/2019/110443A1
The invention relates to a method for providing carbon dioxide for synthesizing urea from ammonia and carbon dioxide, wherein a carbon dioxide-containing flue gas is used as a first starting gas mixture. The first starting gas mixture is...  
WO/2019/106784A1
The present invention is provided with a reformer 1 for reforming a hydrocarbon source to obtain hydrogen and carbon dioxide, an ammonia production unit 10 for using the hydrogen and carbon dioxide obtained by the reformer 1 to obtain am...  
WO/2019/099247A1
Systems and methods are provided for producing high quality synthesis gas from a fiuidized coking system that includes an integrated gasifier. Additionally or alternately, systems and methods are provided for integrating a fluidized coki...  
WO/2019/026044A8
A urea production process comprises a step of synthesis of urea by reaction of ammonia and carbon dioxide, where at least part of the carbon dioxide for the urea reaction synthesis is produced in an oxy-combustion process; the oxy-combus...  
WO/2019/091975A1
The present invention relates to a method for the synthesis of cyclic depsipeptides, in particular emodepside, from the open form.  
WO/2019/093891A1
Processes and plants for the production of purified urea solution are described. In a described urea production process, urea is produced in a synthesis section without a high pressure stripper and the urea solution is subjected to purif...  
WO/2019/082121A1
An apparatus (20) for treatment of process vapours coming from a vacuum concentration section (10) of a urea plant, comprising a vacuum system (11) having a plurality of successive condensation stages (30), connected in series by respect...  
WO/2019/083367A1
Described are a high pressure carbamate condenser, urea plant, and urea production process. The high pressure carbamate condenser as described is of the shell-and-tube heat exchanger type with a tube bundle and has a redistribution chamb...  

Matches 1 - 50 out of 2,170