White Spirit Unit

White Spirit Unit


Design of 100 TPD Kerosene to white spirit manufacturing facility.

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Project Details


  • Started on: 29th April 2017
  • Current Status: Work In Progress
  • Location: U.A.E
  • Category: Distillation and Evaporation
  • Client/Contractor: Chemsys Arabia

Kerosene to White Spirit Project Description

Kerosene, composed mostly of carbon chains that contain 6 to 16 carbon atoms per molecule, is produced by the fractionation of crude oil between 150 °C and 275 °C. Kerosene's major components are branched and straight chain alkanes and naphthenes (cycloalkanes), which normally account for at least 70% by volume. Aromatic hydrocarbons in this boiling range, such as alkyl benzenes (single ring) and alkyl naphthalene’s (double ring), do not normally exceed 25% by volume of kerosene streams. Olefins are usually not present at more than 5% by volume.

Distillation of kerosene produces three distinct cuts between 140 and 215°C. The first cut has around 20 % aromatic content, and is White spirit of grade Type 0. White spirit is mainly used as a solvent for paints, lacquers and thinners. The third cut is Jet A or Jet A1, which is used as an aviation fuel. White spirit type 1 is obtained by hydrodesulphurization of type 0, solvent extraction of aromatics produces type 2 which is low aromatic (around 13-17% aromatics) while hydrogenation produces type 3(<5% aromatics), which is also termed odorless white spirit.

For the purposes of this project, kerosene distillation was carried out with the help of batch distillation with a single column, each batch consisting of 100 TPD of kerosene, to produce type 0 White spirit as the first cut.

Simulation

Simulation was carried out using Aspen Batch Modeler V 9.0. Two batches of 100 TPD each were assumed to be completed in 24 hours, with one batch taking 10 hours and two hours for any required maintenance. Adequate reflux ratios, HETP, packing dimensions were assumed, to minimize the cost and energy requirements, while still obtaining purity and recovery as per our client’s requirements.


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Equipment

Drawings


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Design Drawing
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Design Drawing

Drawings were made in AUTOCAD 2012 by an experienced draughtsman, using data obtained from the simulation and the detailed engineering done by our process and mechanicaldivisions. This includes the P&ID, GA Drawing, Plot Plan, Pipe Routing Diagram and all other required drawings.

Construction and Commissioning

Every required equipment for the project was fabricated in-house following International Codes and Standards. Assistance was provided to the client at the time of commissioning to carry out IR and Continuity Loop test, Control Narrative and Cause-Effect test, Pneumatic Test, Hydrotesting and various other tests to ensure efficient functioning of the plant.


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I&C works
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I&C works
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I&C works

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