摘要:
The invention relates to a method for obtaining formic acid by the thermal separation of a flow containing formic acid and a tertiary amine (I), wherein a liquid flow which contains formic acid and a tertiary amine (I) in a molar ratio of 0.5 to 5 is produced by combining tertiary amine (I) and a source of formic acid, 10 to 100 wt % of the secondary components contained in said flow are separated, and formic acid is removed by distillation from the resulting liquid flow in a distillation device at a bottoms temperature of 100 to 300°C and a pressure of 30 to 3000 hPa abs, wherein the bottoms product from the distillation device is separated into two liquid phases and the upper liquid phase is returned to the source of formic acid and the lower liquid phase is returned for separation of the secondary components and/or to the distillation device.
摘要:
2-Propylheptanoic acid glycidyl ester, 4-methyl-2-propylhexanoic acid glycidyl ester or a mixture thereof (referred to in summary as glycidyl esters for short).
摘要:
Process for the preparation of formic acid by reacting carbon dioxide with hydrogen in a hydrogenation reactor in the presence of a catalyst comprising an element from the 8th, 9th or 10th group of the Periodic Table of the Elements, of a tertiary amine and of a polar solvent, with formation of formic acid-amine adducts, which are then cleaved thermally to give formic acid and tertiary amine.
摘要:
2-Propylheptanoic acid glycidyl ester, 4-methyl-2-propylhexanoic acid glycidyl ester or a mixture thereof (referred to in summary as glycidyl esters for short).
摘要:
The invention relates to a method for producing formic acid by hydrogenation of carbon dioxide in the presence of a catalyst which contains an element of the 8th, 9th or 10th group of the periodic system, a tertiary amine and a polar solvent, at a pressure of 0.2 to 30 MPa abs and a temperature of 20 to 200°C, thereby producing two liquid phases, and separation of the two liquid phases. The liquid phase (B) enriched by the tertiary amine is returned to the hydrogenation reactor and the formic acid/amine addition product from the liquid phase (A) enriched by the formic acid/amine addition product and the polar solvent is thermally separated into free formic acid and free tertiary amine in a distillation unit and the tertiary amine released during separation and the polar solvent are returned to the hydrogenation reactor.
摘要:
The invention relates to a method for producing formic acid by reacting carbon dioxide (1) with hydrogen (2) in a hydrating reactor (I) in the presence of a catalyst comprising an element from the 8 th , 9 th , or 10 th group of the periodic system; a tertiary amine containing at least twelve carbon atoms per molecule; and a polar solvent comprising one or more monoalcohols selected from methanol, ethanol, propanols, and butanols, forming formic acid / amine adducts as intermediate products, which are subsequently thermally split, wherein a tertiary amine having a boiling point at least 5°C higher than formic acid is used, and wherein a reaction mixture comprising the polar solvent, the formic acid / amine adducts, the tertiary amine, and the catalyst forms from the reaction in the hydrating reactor (I) and is discharged as a discharge (3) from the reactor.
摘要:
A process is proposed for preparing formic acid by reaction of carbon dioxide (1) with hydrogen (2) in a hydrogenation reactor (I) in the presence of a catalyst containing an element from group 8, 9 or 10 of the Periodic Table, of a tertiary amine containing at least 12 carbon atoms per molecule, and of a polar solvent comprising one or more monoalcohols selected from methanol, ethanol, propanols and butanols, to form formic acid/amine adducts as intermediates, which are subsequently cleaved thermally, the workup of the outputs (3) from the hydrogenation reactor (I) being performed with addition of water, and this increasing the partition coefficient of the catalyst between the upper phase (4) and the lower phase.
摘要:
The invention relates to a process for oxidizing at least one organic substance with oxygen, comprising the following steps: a) adding the at least one organic substance, in the form of a liquid, and an oxygen-containing gas stream to a first reaction stage, to form a reaction mixture, at least some of the oxygen reacting with the organic compound to form a reaction product, b) adding the reaction mixture from the first reaction stage to an adiabatically operated reaction stage, in which the unreacted organic substance undergoes at least partial further reaction to form the product. The invention additionally relates to an apparatus for implementing the process.