One of the many products derived from refining is lubricating oil, from which a byproduct called slack wax is obtained. Slack wax is a mixture of oil and wax

Crystallization: Slack wax is heated, mixed with solvent and then cooled. As it is cooled, wax crystallizes out leaving oil in solution. Wax specifications such as melt point, penetration, and oil content are controlled primarily by the amount of solvent added, the rate of cooling and the temperature from the crystallization process.

Filtration: The crystallized wax is filtered from the solvent in totally enclosed, inert gas blanketed, rotary drum filters. In order to obtain the low oil content required in final wax products, two and sometimes three stages of filtration are required.

Solvent Recovery: Two streams come from each drum filter, one containing the wax and some solvent and the other containing extracted oil and solvent. These streams go to the solvent recovery plant where solvent is removed by continuous distillation in steam-heated kettle heat exchangers and stripping towers. The recovered solvent is recycled to the crystallization process and to the drum filters as a wash. The solvent-free wax and oil streams go to separate storage. At this point the wax is known as a "product wax" and the oil is called "foots oil". The product wax is usually processed further and most of the foots oil is sold as catalytic cracker feedstock.

De-coloring & De-odorizing: To produce a "fully refined" wax from a product wax requires that the wax be passed through a bed of clay to remove color and through a vacuum stripping tower for odor removal. The de-coloring operation is known as "percolation" and is a batch process. The clay is regenerated before reuse by passing it through a multiple hearth furnace to remove the absorbed color bodies.

Blending and Manufacturing - Fully refined paraffin waxes are blended together to give certain desired properties such as melt point and penetration. These blended waxes are then either sold in a liquid state or converted into slabs, pastilles or granules. Blended waxes are also used for base stock for further blending with other petroleum based products such as resins and polymers to incorporate special properties such as flexibility, toughness and/or gloss.

Foots oil or residue wax, is a byproduct obtained by slack wax de-oiling or sweating in the paraffin wax manufacturing in the paraffin wax manufacturing process. It is used in textile, leather and rubber industries, as petroleum jelly and white oil manufacturing.

Slack Wax can be used as blending components or water proofing agent in the manufacture of various industrial products such as candles, canvass coatings and composite wood panels. These waxes can also function as controlled release agents for various chemicals and fertilizers.

RB SW.pdf [476.55 کیلوبایت] (حجم: 21)

RS SW.pdf [478.73 کیلوبایت] (حجم: 15)

RP SW.pdf [472.44 کیلوبایت] (حجم: 16)

RI SW.pdf [474.22 کیلوبایت] (حجم: 14)

One of the most important challenges of rubber and tire producers is the replacement of extender oils, which contain polycyclic aromatic components (PAC), with environmental friendly oils. At present, common aromatic process oils are suspected to have carcinogenic effects. Appropriate alternative process oils, which comply with the upcoming directives, are MES (Mild Extraction Solvate) or TRAE (Treated Residual Aromatic Extract) and TDAE.

TDAE(Treated Distillate Aromatic Extract) is a green rubber oil (natural friendly oil) with a high aromatic content, environmental protection, non-toxic, non-carcinogenic characteristics, can be used as a substitute for existing aromatic oil. This environment friendly process oil is used as a softening additive in the process of vulcanization of natural rubber and as a component of rubber compounds. Its high viscosity gravity constant (vgc) leads to the reduction in heat buildup and rotational resistance during the usage of tires. Such characteristics enable our TDAE to be used in the production of high quality tire and rubbers.

Specifications

• Good abrasion resistance 
• Good low temperature flexibility
• Low amounts of waste tires in the process
• Good resistance to reversion 
• Save fuel and energy consumption
• Extend tires life time
• Low environmental impact

RUBBER PROCESS OILS (used by manufacturer of finished rubber product, to aid processing) and  RUBBER EXTENDERS OILS (used by raw material manufactures to soften polymers).Extender oil by swelling the polymer and by providing lubrication between rubber molecules softens the stiff rubbery polymers. By adding extender oils the molecular weight, viscosity and solvency of the base polymers can be varied and because of oil content, more additional ingredients can be blended.

Process oils assist in the mixing operation, reduces compounding time, improve processing and modify the physical properties of the finished product.

New rubber compounding process requires high speed mixing and short mixing times and proper polymer consistency for rapid processing. Process oils can aid to optimize these conditions, the compounder can achieve a workable mass with good dispersion of fillers by selecting correct process oil.

Process oils as well as other ingredients  (like wax) import an oiliness to the rubber mass that helps prevent sticking to calendar and tube machine dies. It is particularly important in extrusion and injection molding where output and rejection rates are adversely affected by a sticky non- uniform formulation.

Since the primary plasticizers in PVC leather cloth manufacturing are costly, process oils may be used as secondary plasticizers to reduce cost. As component in rubber formulations and manufacturing of products such as automobile tires, rubber shock absorbers, footwear, industrial hoses, wire and cable coverings, flooring materials and carrier fluid or solvent in manufacture of adhesives, sealants, polishes and carbon black.

Solvent Neutral Mineral base oils are prepared from crude oil derivatives according to the following processes:

Distillation, to adjust the viscosity and flash point.

Refining, to improve viscosity temperature characteristics e.g. viscosity index(solvent extraction with furfural).

Dewaxing, to improve the low temperature properties (M.E.K dewaxing).

Hydrofinishing, to remove undesirable impurities  from petroleum distillates( such as sulfur and nitrogen compounds and olefins).

 Base Stocks, obtained after above listed operations are called Solvent Neutral Base Oil ( SN) which are distinguished with numbers according to their approximate SUS viscosity at 40°c  such as SN 90, SN150,SN50,SN500 etc. 

RBBO.pdf [489.39 کیلوبایت] (حجم: 12)

RSBO.pdf [456.19 کیلوبایت] (حجم: 12)

RPBO.pdf [474.26 کیلوبایت] (حجم: 11)

RIBO.pdf [478.87 کیلوبایت] (حجم: 16)