Abstract:
Production of dry sodium dichloroisocyanurate by spray-drying and up to 50 percent w/w aqueous solution or sussion of the salt in a fluidized bed maintained by inert gases and consisting of finely divided dry sodium dichloroisocyanurate, at from 100* to 300*C.
Abstract:
METHOD OF MAKING POWDERS FROM ETHYLENE POLYMERS BY DISSOLVING THE ETHYLENE POLYMERS AT A TEMPERATURE ABOVE 60*C. IN A FLUORINATED CHLOROHYDROCARBON HAVING FROM 1 TO 4 CARBON STOMS AND 0 TO 2 HYDROGEN ATOMS, COOLING THE SOLUTION TO A TEMPERATURE BELOW 60*C. OR EVAPORATING THE SOLVENT AND COLLECTING THE PULVERIZED ETHYLENE POLYMERS.
Abstract:
Process for the manufacture of highly concentrated sodium vinyl sulfonate solutions or dry sodium vinyl sulfonate by evaporation of water therefrom.
Abstract:
A process for the manufacture of non-dusting dye granules from an aqueous formulation of highly dispersed water-insoluble dyes by spraying the formulation, which contains adhesive compounds, into a fluidized bed of pulverulent dispersing agent, dye or mixture thereof. The resulting granules possess excellent redispersibility, which is important in using them.
Abstract:
A process for separating, by means of a selective solvent, a mixture of C4-hydrocarbons which contains some hydrocarbons which are more soluble in the selective solvent and some which are less soluble therein, in which process the hydrocarbon mixture is separated, in an extractive distillation zone, into a top product which contains the less soluble hydrocarbons and an extract which contains the more soluble hydrocarbons and the selective solvent, the extract, taken off as the bottom product, is subjected to a flash evaporation and the resulting vapor component of the extract is recycled to the extractive distillation zone while the liquid phase remaining after the flash evaporation is fed to a solvent recovery zone, in which the liquid phase obtained from the flash evaporation is separated into a product containing the hydrocarbons and, as the bottom product, the selective solvent which has been freed from the hydrocarbons, the resulting selective solvent is recycled to the extractive distillation zone and the product which is obtained from the solvent recovery zone and contains the hydrocarbons is partially or completely recycled to the extractive distillation zone, after increasing the pressure in a compression zone, in which process the extract taken off the extractive distillation zone is brought, prior to the flash evaporation to a higher pressure than the pressure in the extractive distillation zone and thereafter the extract which is under this higher pressure is heated, in a heat exchange zone, by indirect heat exchange with the selective solvent obtained as the bottom product from the solvent recovery zone, and the heated extract is subsequently let down, in the flash evaporation, to a pressure which is at least equal to the pressure in the extractive distillation zone and is higher than the pressure in the solvent recovery zone.
Abstract:
A process for the manufacture of non-dusting dye granules from an aqueous formulation of highly dispersed water-insoluble dyes by spraying the formulation, which contains adhesive compounds, into a fluidized bed of pulverulent dispersing agent, dye or mixture thereof. The resulting granules possess excellent redispersibility, which is important in using them.
Abstract:
A process for the manufacture of non-dusting dye granules from an aqueous formulation of highly dispersed water-insoluble dyes by spraying the formulation, which contains adhesive compounds, into a fluidized bed of pulverulent dispersing agent, dye or mixture thereof. The resulting granules possess excellent redispersibility, which is important in using them.
Abstract:
A process for separating, by means of a selective solvent, a mixture of C4-hydrocarbons which contains some hydrocarbons which are more soluble in the selective solvent and some which are less soluble therein, in which process the hydrocarbon mixture is separated, in an extractive distillation zone, into a top product which contains the less soluble hydrocarbons and an extract which contains the more soluble hydrocarbons and the selective solvent, the extract, taken off as the bottom product, is subjected to a flash evaporation and the resulting vapor component of the extract is recycled to the extractive distillation zone while the liquid phase remaining after the flash evaporation is fed to a solvent recovery zone, in which the liquid phase obtained from the flash evaporation is separated into a product containing the hydrocarbons and, as the bottom product, the selective solvent which has been freed from the hydrocarbons, the resulting selective solvent is recycled to the extractive distillation zone and the product which is obtained from the solvent recovery zone and contains the hydrocarbons is partially or completely recycled to the extractive distillation zone, after increasing the pressure in a compression zone, in which process the extract taken off the extractive distillation zone is brought, prior to the flash evaporation to a higher pressure than the pressure in the extractive distillation zone and thereafter the extract which is under this higher pressure is heated, in a heat exchange zone, by indirect heat exchange with the selective solvent obtained as the bottom product from the solvent recovery zone, and the heated extract is subsequently let down, in the flash evaporation, to a pressure which is at least equal to the pressure in the extractive distillation zone and is higher than the pressure in the solvent recovery zone.