Patent application number | Description | Published |
20080319230 | Process for Preparing Alkylamines by Reacting Olefins With Ammonia - A process for preparing alkylamines by reacting olefins with ammonia under hydroaminating conditions over a calcined zeolitic catalyst in an adiabatically operated reactor unit, wherein the reaction mixture comprising the starting olefin, ammonia and the corresponding alkylamine is taken off at one or more points and brought into indirect thermal contact with the reaction mixture at one or more points in the reactor unit having in each case a lower concentration of alkylamine compared to the point from which the reaction mixture was taken off, is proposed. | 12-25-2008 |
20110028579 | PROCESS FOR LIGHTENING THE COLOR OF POLYISOCYANATES WITH OZONE-CONTAINING GAS - The continuous or quasi-continuous process for lightening organic polyisocyanates with ozone-containing gas, the treatment of the organic polyisocyanate being effected with an ozone-containing gas which furthermore comprises at least one further inert and/or reactive gas can be carried out, according to the invention, in a stirred tank with connected storage tank, in a sieve tray column or in a packed column. | 02-03-2011 |
20110137077 | PROCESS AND APPARATUS FOR OXIDIZING ORGANIC COMPOUNDS - The invention relates to a process for oxidizing at least one organic substance with oxygen, which comprises the following steps:
| 06-09-2011 |
20110182798 | SINGLE-CHAMBER VAPORIZER AND USE THEREOF IN CHEMICAL SYNTHESIS - The invention relates to an improved process for vaporizing organic compounds and the further conversion thereof. | 07-28-2011 |
20120172621 | PROCESS FOR PREPARING ISOCYANATES - The invention relates to a multistage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic polyamines with carbonic acid derivatives and alcohols to form low molecular weight monomeric polyurethanes and thermal dissociation of the latter, in which the polyisocyanates produced and unusable residues are separated off at particular stages of the reaction and reusable by-products and intermediates are recirculated to preceding stages. | 07-05-2012 |
20120292176 | WATER TREATMENT PROCESS - A process and an apparatus for obtaining pure water from seawater, comprising: a) a raw water is provided that comprises at least one non-volatile component (salt), b) the raw water provided is passed as cooling medium into a heat ex-changer, c) additional heat is supplied to the raw water that is heated in the heat exchanger, d) the raw water from step c) is fed to an evaporation zone, e) a carrier gas suitable for water vapour is provided (air), f) the carrier gas is brought into contact with the raw water in counter current flow in the evaporation zone which contains baffles, wherein the carrier gas takes up water vapour from the raw water, g) the raw water that is obtained in step f) that is enriched with the at least one non-volatile component is taken off from the evaporation zone, h) the water vapour- loaded carrier gas from the evaporation zone is fed to the heat exchanger and is cooled in counter current flow to the raw water, wherein the water vapour present in the carrier gas partially condenses out, i) the carrier gas depleted in water vapour is passed out of the heat exchanger, k) the condensed water vapour is taken off from the heat exchanger as pure water, wherein the evaporation zone is operated substantially adiabatically, and wherein the carrier gas is transported by means of natural convection through the evaporation zone and thereafter through the heat exchanger. | 11-22-2012 |
20140064017 | PROCESS FOR MIXING A LIQUID OR MIXTURE OF A LIQUID AND A FINE SOLID PRESENT IN AN ESSENTIALLY SELF-CONTAINING VESSEL - A process for mixing a liquid stored in a vessel, in which gas is sucked in from the gas phase present above the liquid interface with a suction apparatus present in the liquid, and released into it again for the gas-induced mixing of the liquid. | 03-06-2014 |
20140124356 | PROCESS FOR SOLAR THERMAL ENERGY PRODUCTION - The present invention relates to a process for solar thermal energy production in which switching between daytime and nighttime operation is possible, and also to a device for solar thermal energy production. The present invention relates, in particular, to the use of the process and of the device for producing drinking water or service water. | 05-08-2014 |
20140200351 | APPARATUS AND PROCESS FOR THE CONTINUOUS REACTION OF LIQUIDS WITH GASES - The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. The apparatus of the invention comprises one or more ejectors which each comprise a diffuser. | 07-17-2014 |
20140200369 | APPARATUS AND PROCESS FOR THE CONTINUOUS REACTION OF LIQUIDS WITH GASES - The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. In the apparatus of the invention, the diversion of an internal circulatory flow in the reactor is effected by means of a diversion pan which is arranged underneath a heat exchanger. | 07-17-2014 |
20140200370 | APPARATUS AND PROCESS FOR THE CONTINUOUS REACTION OF LIQUIDS WITH GASES - The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. Here, the cooling medium surrounds the tubes of the heat exchanger of the apparatus of the invention whereas the reaction takes place in the tubes. | 07-17-2014 |