Abstract:
A modular construction falling film evaporator (1) is disclosed, comprising a stack (2) of alternate gap-like evaporation chambers (34) and sheet-like evaporator modules (3) with an assembly (31) of parallel microchannels (32, 33), whereby the evaporation chambers (34) are open above and/or below across the whole width of the module and the stack is arranged in a container (1). The falling film evaporator (1) is used in a method for obtaining a gaseous phase from a liquid medium on a technical scale and is suitable for the concentration of thermolabile solutions and rapidly adjustable production of a gas stream.
Abstract:
A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.
Abstract:
A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.
Abstract:
The invention relates to a process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallisation and after- treatment of the H2O2 crystals. According to the invention, the after- treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. The invention also provides hydrogen peroxide having a concentration of from 99.9 to 100 wt.% a nd a content of TOC, nitrate, phosphate, nickel and tin of in each case less th an 4 mg/l.
Abstract:
A modular micro-reactor with parallel micro-channels on fluid guide plates for chemical reactions, but not for evaporation purposes, is known. A modular falling-film evaporator was developed, comprising a stack of alternate gap-type evaporation chambers and plate-type evaporation modules with a set of parallel micro-channels, the evaporation chambers being open at the top and/or bottom over essentially the entire width of the modules and the stack being arranged in a vessel. The falling-film evaporator is used in a process for the recovery of a gaseous phase from a liquid fluid on a commercial scale. It is suitable for concentrating thermolabile solutions and for providing a rapidly controllable gas stream.
Abstract:
A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.
Abstract:
A modular construction falling film evaporator (1) is disclosed, comprising a stack (2) of alternate gap-like evaporation chambers (34) and sheet-like evaporator modules (3) with an assembly (31) of parallel microchannels (32, 33), whereby the evaporation chambers (34) are open above and/or below acros s the whole width of the module and the stack is arranged in a container (1). The falling film evaporator (1) is used in a method for obtaining a gaseous phase from a liquid medium on a technical scale and is suitable for the concentration of thermolabile solutions and rapidly adjustable production of a gas stream.
Abstract:
A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.