Process for separating dissolved solids from a liquid using an anti-solvent and multiple effect evaporators

Patent · Tue Jul 19 00:00:00 EDT 1994

OSTI ID:7168650

Daniels, E J; Jody, B J; Bonsignore, P V

A process and system are disclosed for treating aluminum salt cake containing water soluble halide salts by contacting the salt cake with water to dissolve water soluble halide salts forming a saturated brine solution. Transporting a portion of about 25% of the saturated brine solution to a reactor and introducing into the saturated brine solution at least an equal volume of a water-miscible low-boiling organic material such as acetone to precipitate a portion of the dissolved halide salts forming a three-phase mixture of an aqueous-organic-salt solution phase and a precipitated salt phase and an organic rich phase. The precipitated salt phase is separated from the other phases and the organic rich phase is recycled to the reactor. The remainder of the saturated brine solution is sent to a multiple effect evaporator having a plurality of stages with the last stage thereof producing low grade steam which is used to boil off the organic portion of the solution which is recycled. 3 figs.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: Univ. of Chicago, IL (United States)
• Patent Number(s): US 5330618; A
• Application Number: PPN: US 7-988447
• OSTI ID: 7168650
• Resource Relation: Patent File Date: 10 Dec 1992
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ALUMINIUM COMPOUNDS
SEPARATION PROCESSES
HALIDES
AQUEOUS SOLUTIONS
DISSOLUTION
EVAPORATION
ORGANIC SOLVENTS
PRECIPITATION
PROCESS SOLUTIONS
RECYCLING
DISPERSIONS
HALOGEN COMPOUNDS
MIXTURES
PHASE TRANSFORMATIONS
SOLUTIONS
SOLVENTS
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes