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What is the process of speciality chemicals derived from Kerosene, mainly :
1. aromatic solvents (Mineral Turpentine Oil MTO type) for paints & varnishes, pesticides
2. dearomatised / hydrogenated aliphatic fluids (white spirits) for alcohols, ethers, esters : for perfumes, cleaning agents, etc.
3. paraffinic compounds for foams and dry-cleaning synthetic / woolen clothes
4. heavy distillates as solvents for commercial dyes & inks
5. high boiling solvents as lubricants in metal cutting / rolling industry.
 
Answers
13/08/2013 A: keith bowers, B and B Consulting, kebowers47@gmail.com
Manufacture of the many 'special products' can be complex.
Aromatic solvents can be recovered from FCCU heavy naphtha. The distillate may require de-odorizing and color improvement to achieve specification. These operations used a) intimate mixing with concentrated sulfuric acid followed by washing with Caustic followed by water washing. b) percolation through activated granular bauxite clay;c) mild hydrotreating d) combinations of the above.
Naphthenic solvents can be recovered from the distillates of some select naphthenic crudes. Odor and color improvement often require sulfuric acid washing followed by caustic and water washing and clay percolation. Caustic strength must be tailored to avoid forming stable emulsions.
Paraffinic specialty products (aluminum roll oil, dry-cleaning solvent, paint thinners, etc.) can be recovered from select paraffinic crude oils. Finishing treatment may include any or all of the
previously mentioned techniques, depending on the crude oil source and product requirements.
The careful identification and segregation of of select crude oils is the key step in making these special products. If such segregation is not feasible, it is very difficult to reliably manufacture the 'Specialty Products' because the 'finishing' steps conditions must be tailored to the distillate and product needs.
04/03/2013 A: Ralph Ragsdale, Ragsdale Refining Courses, ralph.ragsdale@att.net
Many, many years ago, we sold dozens of aliphatic and aromatic products as you described by distilling to tailored boiling ranges and scrubbing with hypochlorite for color and odor improvement. I was on the “odor committee” used to fail or pass a batch of finished product. Today, certain organic products from contact with hypochlorite are said to be carcinogenic, so I don’t know if such treaters are still being used.