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Naphtha



Naphtha

MGT PetrOil Company is on the major producer, supplier and exporter of several petrochemical products in the Middle East, is located in Iran. MGT PetrOil Company has many years’ experiences in exporting, especially in case of Naphtha supplying.

 

Naphtha Analysis

ASTM 3735-02 defines four types of VM&P naphtha the physical and chemical properties of which are shown in below table:

Type I - Regular.

Type II - High flash.

Type III - Odorless.

Type IV - Low aromatics

VM&P Naphtha types I and II generally contain a moderate amount of aromatics (<20%), while Types III and IV, by their nature, are very low in aromatics, less than 1% and 2% respectively. Most of the products supplied today under the name VM&P naphtha are generally of the lowaromatics or odourless types. At the moment, Shell Chemicals only produces one product under the general name VM&P Naphtha, which is VM&P Naphtha HT, and the properties of this solvent are mentioned in below table for comparison with the specifications in ASTM D3735. However, until quite recently Shell produced several products with this designation: in the 1990s four different grades of VM&P Naphtha were produced by Shell. Again, the properties of these now obsolete grades are included in below table for comparison purposes. The most important point is the current Shell product VM&P Naphtha HT has a much narrower, and slightly higher, boiling range than the similarly-named product that was available in 1997.

 

ASTM 3735-02 Specification

 

Type I A

Type II A

Type III B

Type IV

   Commercial reference

regular

high flash

odorless

low aromatic

   Appearance

Clear and free of suspended matter and undissolved water.

   yBromine number, max

5

5

5

5

   Color

Not darker than + 28 on the Saybolt scale, or 10 on the platinum-cobalt scale.

   Aromatics, volume %, max

20

20

1

2

   Distillation, (°C)

       

   Initial boiling point, min

113

138

113

113

   50 % recovered, max

135

160

135

135

   Dry point, max

54

177

154

154

   Flash point, min (°C)

4

23

4

4

   Kauri-butanol value, min

30

30

-

30

   Kauri-butanol value, max

       

   Apparent specific gravity, (15.6/15.6°C), min

0.715

0.715

0.715

0.715

   Apparent specific gravity, (15.6/15.6°C), max

0.792

0.792

0.76

0.76

   Apparent specific gravity, (25/25°C), min

0.709

0.709

0.709

0.709

   Apparent specific gravity, (25/25°C), max

0.786

0.786

0.754

0.754

   Notes

   A. Type I and Type II may be commercially available to meet certain air pollution regulations that limit C8 and higher aromatics to not more than 8 volume %, total aromatics to not more than 20 volume %, olefins to not more than 5 volume %, and total aromatic plus olefins to not more than 20 volume %.

   B. Only products that have a very high isoparaffinic hydrocarbon content, that is, approaching 100 %, are considered to fit the “odorless” category.

 

 

Naphtha Usages

Paraffinic (or light) naphtha:

The most important application for paraffinic ("light") naphtha is as feedstock in the petrochemical production of olefins. This is also the reason they are sometimes referred to as "light distillate feedstock" or LDF. (These naphtha types may also be called "straight run gasoline" (SRG) or "light virgin naphtha" (LVN).)

using feedstock in petrochemical steam crackers leads to the process of naphtha which is heated in the presence of water vapor and the absence of oxygen or air until the hydrocarbon molecules fall apart. Olefins (ethylene / ethene, propylene / propene and butadiene) and aromatics (benzene and toluene) are The primary products of the cracking process. These are used as feedstock for derivative units that produce plastics (polyethylene and polypropylene, for example), synthetic fiber precursors (acrylonitrile), and industrial chemicals (glycols, for instance).

 

Heavy naphtha

Another category which can be used in the petrochemical industry is "heavy", which is mostly used as feedstock for refinery catalytic reformers where they convert the lower octane naphtha to a higher octane product called reformate. Alternative names for these types are "straight run benzene" (SRB) or "heavy virgin naphtha" (HVN).

 

Additional applications

Naphtha is also used in other applications, such as:

  • production of gasoline.
  • industrial solvents and cleaning fluids
  • An oil painting medium
  • The sole ingredient in the home cleaning fluid Energine, which has been discontinued. You can purchase this type of naphtha at any hardware store.
  • An ingredient in shoe polish
  • An ingredient in some lighter fluids for wick type lighters such as Zippo lighters.
  • An adulterant to petrol
  • A fuel for portable stoves and lanterns, sold in North America as white gas or Coleman fuel.
  • Historically, as a probable ingredient in Greek fire (together with grease, oil, sulfur, and naturally occurring saltpeter from the desert)
  • A fuel for fire spinning, fire juggling, or other fire performance equipment which creates a brighter and cleaner yet shorter burn.
  • To lightly wear the finish off guitars when preparing "relic" instruments.
  • To remove oil from the aperture blades of camera lenses, which if present can slow the movement of the blades, leading to overexposure.

Contact Us

Phone:+98 21 88 63 5592
Fax: +98 21 88 63 5568
Email: Info@mgtpetroil.com