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catalytic cracking unit

   Also found in: Acronyms 0.01 sec.
catalytic cracking unit [¦kad·əl¦id·ik ′krak·iŋ ‚yü·nət]
(chemical engineering)
A unit in a petroleum refinery in which a catalyst is used to carry out cracking of hydrocarbons. Also known as catalytic cracker.


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The upgrade also includes adding a 200,000 bpd vacuum distillation unit, a 92,000 bpd catalytic cracking unit and a 26,000 bpd alkylation unit.
Recent comments highlight that an increasing number of Gulf Coast refiners have moved to cut throughput of fluid catalytic cracking units, historically a major source of refining profitability, in addition to crude distillation units," it said.
In mid-1998 NIOC offered four projects for the refinery to be built and funded by foreign companies on buy-back basis, so that the plant's capacity is raised to 600,000 b/d: modernising the central fluid catalytic cracking unit (FCCU) built by Foster Wheeler in 1950 and raising its capacity from 40,000 to 60,000 b/d; building a 70,000 b/d vacuum distillation unit (VDU); building a 25,000 b/d visbreaker; and building four desalting units with a total capacity of 525,000 b/d.
 
 
 
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