Mid-Baffle : In horizontal emulsion treaters a baffle or bulkhead may be located between the heating section and the coalescing section. This member is commonly referred to as a mid-baffle or bulkhead. (Spec 12L)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}