Process for drying chemical products using a burnable organic liquid such as methanol
AssigneeHoechst Aktiengesellschaft
InventorsWalter Birke, Hans-Ulrich VON DER Eltz, Franz Schon
Life of this patent
Estimating the term…
Abstract
Process for drying chemicals which comprises treating the chemicals with a burnable organic liquid and burning off the liquid to dry the chemicals. The process is particularly useful for drying chemicals such as dyestuffs, pharmaceuticals and organic intermediates by applying an aqueous methanol solution to the chemicals and burning off the methanol to dry the chemicals.
Claims13
A process for drying chemicals in solid form which consists essentially of applying to said chemicals a burnable organic liquid, igniting the liquid, burning off the liquid from the chemicals and thus drying the chemicals.
A process for drying a dyestuff in solid form which consists essentially of applying to the dyestuff a burnable organic liquid, igniting the organic liquid on said dyestuff, burning the liquid from the dyestuff and drying the dyestuff.
A process for drying a dyestuff in solid form which consists essentially of applying to the dyestuff, as a burnable liquid, methanol or an aqueous methanol solution containing up to 70% by volume of water, igniting and burning the methanol from the dyestuff and thereby drying the dyestuff.
A process for drying a dyestuff in solid form which consists essentially of applying to the dyestuff an aqueous methanol solution containing 20 to 50% by volume water, igniting the methanol on said dyestuff, burning the methanol from the dyestuff and drying the dyestuff.
Dependencies are inferred from the claim text.