ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,832, issued on May 20, was assigned to SAR TECHNOLOGY INC. (Taipei, Taiwan).
"Method for recycling electronic-grade and industrial-grade sulfuric acid" was invented by Hsu Chiang Fang (Tainan, Taiwan) and Mong-Tung Lee (Tainan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a method for recycling sulfuric acid from various industries. The recovery system is constructed that it can process spent acid containing H2O2 and recover waste heat to save energy. The heat from the spent acid recovery process is used to generate electric energy, hot water, and chilled water to reduce its energy consumption, operating cost,...