Patent ID: 11935666
Assignee: CELLGENTEK CO., LTD
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G  Y | IPC G

Claim 0:
1. An apparatus for purifying Li7 ions from reactor coolant of radioactive material and adjusting pH of the reactor coolant comprising:
a radioactive metal ion recovery unit comprising a first negative electrode member having a negative (−) electrode connected thereto and a first positive electrode member having a positive (+) electrode connected thereto, the radioactive metal ion recovery unit being configured such that the reactor coolant passes between the first negative electrode member and the first positive electrode member so that radioactive metal ions and metal particles are recovered when deposited on the first negative electrode member;
an Li ion separation/concentration unit comprising a second positive electrode member having a positive (+) electrode connected to one side of the Li ion separation/concentration unit, a second negative electrode member having a negative (−) electrode connected to the other side of the Li ion separation/concentration unit, and a cation-exchange membrane provided between the second positive electrode member and the second negative electrode member and configured to pass a cation therethrough, the Li ion separation/concentration unit being configured such that the reactor coolant that passed through the radioactive metal ion recovery unit passes between the second positive electrode member and the cation-exchange membrane, and pure water is continuously recycled between the second negative electrode member and the cation-exchange membrane so that Li7 ions produced in the reactor coolant pass through the cation-exchange membrane, move toward the second negative electrode member, react with the pure water to form LiOH concentrated water, and are separated from the reactor coolant; and
an Li7 concentration tank,
a first flow path connecting the Li ion separation/concentration unit to the Li7 concentration tank,
a second flow path connecting the Li7 concentration tank to the Li ion separation/concentration unit, and
a power supply configured to apply DC power to the radioactive metal ion recovery unit,
wherein the Li7 concentration tank is configured to concentrate Li7 in a recycling process in which Li7 received in the Li7 concentration tank from the Li ion separation/concentration unit via the first flow path is recycled again to the Li ion separation/concentration unit via the second flow path,
wherein the first negative electrode member of the radioactive metal ion recovery unit has a closed structure with a shielded exterior, and the first positive electrode member is replaceably mounted in the first negative electrode member,
wherein the DC power is intermittently applied to the radioactive metal ion recovery unit at a predetermined cycle so as to maintain a predetermined concentration level of Li ions in the reactor coolant by reintroducing Li ions to the reactor coolant.