Kerosine 77-paraffins from

Linear paraffins in the C q to range are used for the production of alcohols and plasticizers and biodegradable detergents of the linear alkylbenzene sulfonate and nonionic types (see Alcohols Plasticizers Surfactants). Here the UOP Molex process is used to extract / -paraffins from a hydrotreated kerosine (6—8). 

Application The Molex process recovers normal C10-C13 paraffins from kerosine using UOP s innovative Sorbex adsorptive separation technology. 

Description The ExxonMobil Chemical (EMC) process offers commercially proven technologies for efficient recovery and purification of high-purity n-paraffin from kerosine feedstock. Kerosine feedstocks are introduced to the recovery section where the n-paraffins are efficiently recovered from the kerosine stream in a vapor-phase fixed-bed molecular sieve adsorption process. In the process, the n-paraffins are selectively adsorbed on a molecular sieve and subsequently desorbed with a highly effective desorbent. 

Kellogg Brown Root LLC n-Paraffin Kerosine ENSORB recovery process (developed by ExxonMobil Chemical) removes long-chain aliphatic normal paraffins from the kerosine stream in vapor phase by adsorption onto a molecular sieve. A low-pressure ammonia desorbate recovers the n-paraffins from the sieve for use as LAB-quality product for further purification 1 NA... 

A Adsorber (loading of a 50 nm molecular sieve by n-paraffines from a kerosine fraction)... 

Description Straight-run kerosine is fed to a stripper (1) and a rerun column (2) to remove light and heavy materials. The remaining heart-cut kerosine is heated in a charge heater (3) and then treated in a Unionfining reactor (4) to remove impurities. The reactor effluent is sent to a product separator (5) to separate gas for recycle, and then the liquid is sent to a product stripper (6) to remove light ends. The bottoms stream from the product stripper is sent to a Molex unit (7) to recover normal paraffins. 

Application Efficient low-cost recovery and purification processes for the production of LAB-grade and/or high-purity n-paraffin products from kerosine. 

The low-density products manufactured in the SMDS process are predominantly paraffinic and free from impurities such as nitrogen and sulphur. Both the kerosine and gas oil have excellent combustion properties (smoke point and cetane number), and their cold-flow characteristics meet all relevant specifications - even the stringent freezing point requirements of aviation turbine kerosine. They also make excellent blending components for upgrading low-quality stock that would otherwise have to be used in fuel oil. The excellent quality of the products was proved in extensive engine tests. 

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