Spray-drying process
US8361357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Dec 15, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D11/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a spray-dried detergent powder having: (i) detersive surfactant; and (ii) other detergent ingredients; wherein the process has the steps of: (a) dosing an aqueous detergent slurry into a drop tank; (b) transferring the aqueous detergent slurry from the drop tank to a pipe, and transferring the aqueous detergent slurry along the pipe through at least one pump to a spray nozzle; (c) contacting a detergent ingredient to the aqueous detergent slurry in the pipe to form a mixture; (d) spraying the mixture through the spray nozzle into a spray-drying tower; and (e) spray-drying the mixture to form a spray-dried powder, wherein the ratio of (i) the volume of the pipe of step (b) in liters to (ii) the volume of the drop tank of step (a) in liters is less than 1:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.