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US 2017/0044313 A1Published application
Purification of brine solution
AssigneeSabic Global Technologies B.V.
InventorAhmed A. YOUSSEF
Life of this patent
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Abstract
Systems and methods for treatment of an effluent stream are disclosed. In an aspect, a system can comprise an input configured to receive a brine solution, a purification component in communication with the input and configured to receive the brine solution therefrom, the purification component comprising activated carbon, wherein the brine solution is caused to pass through the activated carbon to produce a purified solution, and an output in communication with the purification component to receive the purified solution therefrom.
Claims20
A system comprising:
- an input configured to receive a brine solution;
- a purification component in communication with the input and configured to receive the brine solution therefrom, the purification component comprising activated carbon, wherein the brine solution is caused to pass through the activated carbon to produce a purified solution;
- and
- an output in communication with the purification component to receive the purified solution therefrom.
1 more element
A method comprising:
- receiving a brine solution, wherein the brine solution comprises organic impurities;
- and
- causing the brine solution to pass through a portion of activated carbon, wherein the activated carbon operates to remove at least a portion of one or more of the organic impurities from the brine solution resulting in a purified solution, and wherein the purified solution has less than about 1 ppm of one or more of bisphenol A, triethyl amine, sebacic acid, methylene chloride, resorcinol, acetone, Q-Salt, n-phenyl phenolphthalein, phenol, cresols, xylenol, and tetrahydroxypropyl ethylenediamine.
A method comprising:
- reacting bisphenol A and sodium hydroxide in an interfacial polymerization process to produce polycarbonate and a resultant brine solution, wherein the brine solution comprises one or more organic impurities;
- causing the brine solution to pass through a volume of activated carbon, wherein the activated carbon operates to remove at least a portion of the one or more organic impurities from the brine solution resulting in a purified solution;
- performing electrolysis on the purified solution to generate sodium hydroxide solution comprising from about 27 to about 35 wt % sodium hydroxide, sodium chlorates below 80 ppm, and iron below 2 ppm;
- and
- using the sodium hydroxide solution to make polycarbonate by an interfacial process.
2 more elements
Dependencies are inferred from the claim text.