×

Spent brine concentration using microwave energy

  • US 4,267,026 A
  • Filed: 12/21/1979
  • Issued: 05/12/1981
  • Est. Priority Date: 12/21/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. A process for the concentration of spent brine from a membrane electrolytic cell which comprises:

  • (a) removing spent brine containing dissolved chlorine and from about 14 to about 22 percent by weight of NaCl from said membrane electrolytic cell,(b) feeding said spent brine to a concentration zone,(c) applying microwave energy to said spent brine to produce concentrated brine and a gaseous mixture of chlorine and steam,(d) feeding said concentrated brine and said gaseous mixture to a separation zone,(e) separating said gaseous mixture from said concentrated brine, and(f) returning said concentrated brine containing from about 23 to about 26 percent by weight of NaCl to said membrane electrolytic cell.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×