News from ΝATIONAL
National Carbon Company Division of Union Carbide Corporation
· 3 0 East 42nd Street, New York 17, Ν. Υ.
Sales Offices: Atlanta, Chicago, Dallas, Kansas City, Los Angeles, New York, Pittsburgh, San Francisco. I N CANADA: Union Carbide Canada Limited, Toronto
National Carbon representatives expand your engineering force
VERSATILE CARBON AND GRAPHITE STRUCTURES CUT COSTS IN HIGH TEMPERATURE CORROSIVE PROCESSES Carbon a n d graphite a r e proving economical when used for high temperature chemical processing e q u i p m e n t such as c o m b u s t i o n chambers, reactor vessel linings, bubble c a p trays, sieve trays a n d packing support structures. At ele vated temperatures, these materials provide almost universal corrosion resistance and structural stability. These properties are maintained at temperatures up to 4 0 0 0 C F in reducing atmospheres. Further more, high thermal conductivity enables water-cooled g r a p h i t e structures to withstand up to 2 0 0 0 ° F under oxidizing condi tions.
H. L. S H E P A R D - S A I . E S ENGINEER
Mr. Shcpard graduated from Iowa State College with a B.S. in chemical engineering. H e has been with National Carbon Company for 25 years. Prior to this he was a chemist and chemical engineer in process control with a non-ferrous producer and in industrial water treatment operations. Shepard is a former manager of National Carbon's Specialties Depart ment, a forerunner of today's Chem ical Products Marketing Department. He has been a sales engineer in the Midwest and the Southwest, and presently is covering the mid-Atlantic area. Here he aids in the selection, special designing, and installation of carbon, graphite and " K a r b a t e " chemical process equipment. Call your National Carbon Sales Engineer today . . . he can save you time, money and needless worry.
Diagram of a typical carbon tower packing support structure.
Easily machined to close toler ances, graphite can be worked even with hand tools. Depending on size a n d processing require ments, t h e materials can be supplied for either monolithic or s e g m e n t a l s t r u c t u r e s . Segmental structures have been built with walls 2 0 ' long χ 1 5 ' high, using blocks W i " thick, 2 8 " wide and 7 2 " long.
"National" Carbon Brick available in eleven styles of 9" χ 4V2" χ 2V2" size series C a r b o n ' s chemical inertness plus unique physical properties make these brick an excellent choice for lining tanks, drain troughs and sumps handling corrosives. Carbon brick are widely used for applications in volving hydrofluoric acid, nitrichydrofluoric acid mixtures, caustic soda, phosphoric acid, and sulphuric acid — hydrocarbon mixtures. Circle brick can be supplied on request. Catalog Section S-6215. 26 A
Graphite sieve tray 9' 10" in diameter and 3" thick contains 5612-Vi" diam eter holes.
NATIONAL TRADE-MARK
The terms "National", " N " and Shield Device, "Karbate"and "Un ion Carbide"are registered trade-marks of Union Carbide Corporation.
INDUSTRIAL AND ENGINEERING CHEMISTRY
UNION
Graphite plate-type tower packing support installed in a primary phenol stripping column. Here the slotted cap design increases the free area.
