Hancock is a city in Houghton County in the U.S. state of Michigan. The population was 4,501 at the 2020 census.
Located on the Keweenaw Peninsula, Hancock is along on the northside of the Keweenaw Waterway opposite of the city of Houghton, and the two are connected by the Portage Lake Lift Bridge. Hancock is the northernmost city in the state of Michigan.
In chemical engineering and related fields, a unit operation is a basic step in a process. Unit operations involve a physical change or chemical transformation such as separation, crystallization, evaporation, filtration, polymerization, isomerization, and other reactions. For example, in milk processing, the following unit operations are involved: homogenization, pasteurization, and packaging. These unit operations are connected to create the overall process. A process may require many unit operations to obtain the desired product from the starting materials, or feedstocks.
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