| Patents for C01C 1 - Ammonia; Compounds thereof (7,027) |
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| 09/25/1991 | CN1014032B Process and reactor for exothermic heterogenous synthesis with several catalytic beds and with exthernal recovery of reaction heat |
| 09/25/1991 | CN1014031B Improved process for heterogeneous synthesis and related reactors |
| 09/24/1991 | US5051245 Purification of flue gas by forming ammonium sulfate from reaction of ammonia with sulfur oxides |
| 09/18/1991 | EP0446592A1 A wall structure for the distribution of gas in catalytic beds and for the support with minimum dimensions of the catalyst in reactors for heterogeneous synthesis |
| 09/11/1991 | CN1054403A Solid thiocarbonates and method of manufacture and use |
| 09/11/1991 | CN1054381A System for distribution of gas in catalytic beds and for support with minimum dimensions of catalyst in reactors for heterogeneous synthesis |
| 09/05/1991 | WO1991013028A1 Solid thiocarbonates and methods of manufacture and use |
| 09/03/1991 | US5045568 Preparation of methanol from carbon oxides and hydrogen |
| 09/03/1991 | CA1288212C Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions |
| 08/28/1991 | CN1013664B Device for the control of ammonia converter, etc. |
| 08/28/1991 | CN1013647B Catalyst precursors |
| 08/27/1991 | US5043444 Process for the preparation of asymmetrically substituted ureas |
| 08/21/1991 | CN1013574B Device for nitrogen and oxygen treatment with aid of cataylst |
| 08/14/1991 | CN1013490B Improved pipe reactor for the mfr. of ammonium phosphates containing ammonium sulfate |
| 08/13/1991 | US5039327 Pesticides |
| 08/13/1991 | CA1287481C Device conceived as nh _reactor |
| 08/13/1991 | CA1287480C Device for the control of an ammonia converter etc. |
| 07/31/1991 | EP0160043B1 A process for continuously removing and recovering ammonia from aqueous ammonia waste water |
| 07/26/1991 | WO1991011389A1 Method of production of high purity fusible silica |
| 07/26/1991 | CA2074518A1 Method of production of high purity fusible silica |
| 07/16/1991 | US5032364 Ammonia synthesis plant |
| 07/11/1991 | WO1991009978A1 Process for converting dross residues to useful products |
| 07/11/1991 | WO1991009811A1 Synthetic ammonia process |
| 07/10/1991 | CN1052851A Tetrathiocarbonate process |
| 07/10/1991 | CN1052833A Energy-saving production of synthetic ammonia |
| 07/10/1991 | CN1052832A Concentrating method for weak ammonia liquor containing synthetic ammonia and ammonium acid carbonate |
| 07/03/1991 | CN1013034B Device conceived as nh3 reactor |
| 07/02/1991 | US5028407 Ammoniation of ammonium fluosilicate |
| 07/02/1991 | US5028401 Vertically coupled cylindrical modules for aerosol reactions |
| 06/06/1991 | DE3928556A1 Sepn. of ammonia from gaseous mixt. with isocyanic acid - by addn. of tert. amine and condensation of adduct of isocyanic acid and amine |
| 05/29/1991 | CN1051711A Process for preparation of large grain ammonium sulfate |
| 05/29/1991 | CN1012692B Methods and means for producing power and cooling in the mfr. of ammonia |
| 05/08/1991 | EP0426119A2 Process for recovery of ammonia from an ammonia-containing gas mixture |
| 05/08/1991 | CN1012568B Simultaneous prodn. of sodium nitrate and ammonium chloride by flotation |
| 05/08/1991 | CN1012567B Process for recovery of ammonia and potassium fluoride from ammonium fluoride solution |
| 05/02/1991 | EP0425468A1 Process for removal of nitrogen oxides from gases |
| 05/01/1991 | CA2028876A1 Process for recovery of ammonia from an ammonia-containing gas mixture |
| 04/30/1991 | US5011625 Autothermal steam reforming process |
| 04/30/1991 | CA1283525C Process to obtain an optimal gas distribution in catalytic beds for heterogeneous reactions in gaseous phase |
| 04/25/1991 | CA2013554A1 Method for removing nitrogen oxides from gases |
| 04/23/1991 | US5009678 Semipermeable composite membranes comprising very thin layer of a sulfonated aromatic polysulfone-containing polyether coated on a porous support |
| 04/10/1991 | EP0421468A1 Catalytic oxidation of ammonia |
| 04/06/1991 | CA2026943A1 Catalytic oxidation of ammonia |
| 04/03/1991 | WO1991004944A1 Tetrathiocarbonate process |
| 04/03/1991 | CA2067125A1 Tetrathiocarbonate process |
| 03/20/1991 | EP0386043A4 Granular ammonium sulphate and process for the production thereof |
| 03/19/1991 | US5000926 Catalyst layer-fixed reactor |
| 03/13/1991 | EP0416236A2 Process for the isolation isocyanic acid from a gaseous mixture of isocyanic acid and ammonia |
| 03/07/1991 | DE3928575A1 Removal of ammonia from isocyanic acid-ammonia mixts. - by adding an ether at specific temp. and cooling, so that an isocyanic acid-ether adduct condenses out and ammonia is sepd. as gas |
| 02/28/1991 | DE3927729A1 Aiding ammonia or methanol prodn. by steam reforming - with energy from fuel cell using oxygen and hydrogen from adsorption system |
| 02/12/1991 | US4992252 Catalytic hydrogenation of nitrogen monoxide in presence or platinum containing catalysts |
| 02/06/1991 | CN1011540B Device for exchange between recycle gas leaving nh3 converter and water |
| 02/05/1991 | US4990319 Process for producing ammonia and sulfur dioxide |
| 01/30/1991 | EP0410169A2 Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates and substituted isocyanates |
| 01/30/1991 | EP0410168A2 Process for the preparation of asymmetrically substituted ureas |
| 01/23/1991 | CN1011303B Method of purifying coke oven gas and getting ammonium hydrogen carbonate as by-product |
| 01/15/1991 | US4985217 Absorption, oxidation |
| 01/02/1991 | EP0405272A2 Process for producing phase-stabilized ammonium nitrate |
| 01/01/1991 | US4981669 Ammonia synthesis gas |
| 01/01/1991 | US4981664 Method of production of high purity silica and ammonium fluoride |
| 12/19/1990 | EP0402540A1 Process for concentrating aqueous solutions of hydroxylammonium nitrate |
| 12/19/1990 | CN2067707U Axle radial ammonia synthesis tower with production increasing and energy saving type |
| 12/12/1990 | CN1010768B Technology of recovering ammonia from ammonia water |
| 12/11/1990 | US4976928 Device for performing exothermic catalytic gas reactions for the synthesis of ammonia or methanol |
| 12/04/1990 | CA1277123C System for reducing energy consumption improving reactors for heterogeneous catalytic synthesis and relative reactors |
| 11/28/1990 | CN1010577B Method of production of ammonium hydrogen carbonate by utilizing ammonia water containing sulfur produced in coking plant |
| 11/27/1990 | CA1276774C Process for synthesizing ammonia |
| 11/20/1990 | US4971771 Modular manifold means for distributing a flow of a gas in a preferably catalytic reactor |
| 11/15/1990 | WO1990011119A3 Membrane separation of ammonium acetate and ammonium hydroxide |
| 11/14/1990 | CN1010402B Double-stage ammonia converter with at least one catalyst bed and central heat exchanger |
| 11/13/1990 | US4970339 By-product separation, solvent evaporation; ammoniation |
| 10/31/1990 | CN1046509A Process for preparation of decolorized rearragement ammonium sulfate |
| 10/17/1990 | CN1046143A Production method of industrial sodium bicarbonate and agricultural ammonium chloride |
| 10/16/1990 | US4963338 Three catalytic beds; temperature control by quenching with gas, cooling; heat exchanging; for producing ammonia or methanol |
| 10/11/1990 | DE4010603A1 Verfahren zur stofflichen nutzung von produktentspannungsgas Methods for material usage of product-relaxation gas |
| 10/11/1990 | DE4010602A1 Residual gas re-use in ammonia synthesis plant |
| 10/04/1990 | WO1990011119A2 Membrane separation of ammonium acetate and ammonium hydroxide |
| 10/03/1990 | EP0390420A1 Combined heat exchanger system such as for ammonia synthesis reactor effluent |
| 10/03/1990 | CN1045770A Concentrated ammonium acetate and ammonium hydroxide separation system by thin film distillation |
| 10/03/1990 | CN1045708A System for modifying in situ reactors for synthesis of ammonia |
| 10/03/1990 | CN1045707A Process and reactor for exothermic heterogeneous synthesis with several catalytic beds and heat exchange |
| 09/22/1990 | CA2012673A1 Combined heat exchanger system such as for ammonia synthesis reactor effluent |
| 09/18/1990 | CA1274168A1 Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 09/12/1990 | EP0386693A2 Process and reactor for exothermic heterogeneous synthesis with several catalytic beds and heat exchange |
| 09/12/1990 | EP0386692A2 System for modifying in situ reactors for the synthesis of ammonia |
| 09/12/1990 | EP0386043A1 Granular ammonium sulphate and process for the production thereof. |
| 09/11/1990 | US4956161 Process for removing SO from a gaseous mixture (OP-3409) |
| 09/11/1990 | CA1273865A1 Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 09/09/1990 | CA2011887A1 System for modifying in situ reactors for the synthesis of ammonia |
| 09/05/1990 | CN1009434B Process and device for temp. control of catalyst beds in ammonia synthesis plants |
| 08/29/1990 | EP0384198A1 Process for the separation of ammonium sulfate from waste streams with high content of tar coming from the preparation of (meth) acrylonitrile |
| 08/29/1990 | CN1044945A Power-economizing method for oxygen-rich prodn of carbon black and synthetic ammonia |
| 08/29/1990 | CN1009357B Technology for processing dilute ammonia water in ammonium bicarbonate production |
| 08/28/1990 | US4952375 System for reducing energy consumption improving reactors for heterogeneous catalytic synthesis and related reactors |
| 08/23/1990 | DE3905034A1 Ammonia synthesis process having a high-pressure stripper |
| 08/21/1990 | CA1272868A1 Ammonia synthesis converter |
| 08/21/1990 | CA1272867A1 Ammonia synthesis converter |
| 08/17/1990 | WO1990009234A1 Process and apparatus for exothermic reactions |
| 08/07/1990 | US4946657 Heat conservation |
| 08/04/1990 | WO1990008736A1 Method for removal of ammonia from a gas mixture |