Naphthalene from reforming residues

UNIDAK A process for extracting naphthalene from reformer residues in petroleum refining. It includes a dealkylation stage to convert the naphthalene homologues to naphthalene. 

UNIDAK A process for extracting naphthalene from reformer residues in petroleum refining. It includes a dealkylation stage to convert the naphthalene homologues to naphthalene. The process temperature is approximately 600°C the catalyst is based on cobalt/molybdenum. Developed by the Union Oil Company of California. 

Figure 9.8 shows the Union Oil (CA) Unidak process for the manufacture of naphthalene from reformer residues. 

The first catalyst used for fluidized-bed processes in the 1940 s had poor resistance to sulfur, so that naphthalene had to be desulfurized beforehand. The fluidized-bed process was therefore most commonly used to oxidize petroleum-derived naphthalene from reformer residues. 

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