ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,313, issued on Dec. 30, was assigned to KUWAIT NATIONAL PETROLEUM COMPANY (Safat, Kuwait).
"Method of cleaning a cold box" was invented by Kanagasabai Sabapathi (Ahmadi, Kuwait), Saleh N.S.E. Aljateli (Kuwait, Kuwait) and Abdulrahman Al Sumaie (Kuwait, Kuwait).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of cleaning a cold box of an exchanger includes performing a methanol pre-flush of the system and inspecting filters in a filtration unit. The method includes adding toluene reformate to circulation tank and circulating the toluene reformate. The method includes analyzing the circulating toluene reformate for sulfur content. The method inc...