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

Abstract

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.

Inventors:
; ;
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
7168650
Patent Number(s):
5330618 A
Application Number:
PPN: US 7-988447
Assignee:
Univ. of Chicago, IL (United States) CHO; EDB-94-130860
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 10 Dec 1992
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Daniels, E.J., Jody, B.J., and Bonsignore, P.V. Process for separating dissolved solids from a liquid using an anti-solvent and multiple effect evaporators. United States: N. p., 1994. Web.
Daniels, E.J., Jody, B.J., & Bonsignore, P.V. Process for separating dissolved solids from a liquid using an anti-solvent and multiple effect evaporators. United States.
Daniels, E.J., Jody, B.J., and Bonsignore, P.V. Tue . "Process for separating dissolved solids from a liquid using an anti-solvent and multiple effect evaporators". United States.
@article{osti_7168650,
title = {Process for separating dissolved solids from a liquid using an anti-solvent and multiple effect evaporators},
author = {Daniels, E.J. and Jody, B.J. and Bonsignore, P.V.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {7}
}