Solvent Extraction Plant

The extraction plant comprises of Extraction, De-solventizer Toaster, a Distillation System and a Solvent recovery system. The extractor enables extraction of the oil from the cake, Distillation system enables to separate oil from miscella, Recovery group recovers the evaporated hexane, Desolventizer evaporates the hexane from de-oiled cake and  toasts the meal to maintain inherent nutrients, and stabilizes its moisture as well as temperature. This equipment’s are efficiently designed to achieve the best of performance in terms of quality of oil, quality of DOC, consumption of utilities and hexane loss.

Solvent extraction is a multi level process used to extract oil from the oil seeds / oil cakes by use of a solvent. Post milling, the meal is ready, which means that the seed has been improved to a form which enhances its surface area for solvent absorption. This meal is transferred to the extractor, where it comes in contact with hexane (solvent). The de-oiled meal and miscella are the outputs which are further processed and distilled for optimum extraction of oil and solvent removal.

Solvent extraction plant comprises of the following:
  • Seed Preparation: Roller mill / Flaking mill / Cooker-Conditioner / Expander-Extruder
  • Roller Mill: Used in the preparation of oil seeds prior to direct solvent extraction.
  • Cookers-Conditioner: Designed to condition the seed for better extraction by heating and adjusting moisture content to optimum level.
  • Flaking Mill: Fitted with smooth rolls particularly suitable for flaking oil seeds or cakes prior to solvent extraction.
  • Solvent Extraction: Balaji Engineering belt type horizontal extractor, desolventizing toaster, distillation system and recovery system are so efficiently designed as to give the best of performance in terms of quality of oil, quality of DOC, consumption of utilities and hexane loss.
Balaji Engineering Advantages
  • Latest continuous belt type extractor with multi-spray system.
  • Multi-Stage DTDC De-Solventizing toaster to achieve the best quality of DOC, suitable for export.
  • Multi-Stage Distillation System and Solvent recovery system to minimize the solvent losses and to have the final oil with optimum flash point.
RAW MATERIAL RECEIVING:

The oil seeds are received at the platform through Seed unloading hoppers. The seed than conveyed to pre-cleaning section through conveyor.

PRE-CLEANING:

The Oil seed coming from unloading section goes to Rotary screen / vibro cleaner
through Bucket elevator where dust particles are removed and dust collected through
Cyclone airlock valve. The clean oil seeds then goes to Seed storage Silo’s Feeding
elevator.

PREPARATORY:
  • The seed from Silo goes to the De-stoner through Belt conveyor and Bucket elevator where the stones or heavy impurity particles are removed and the separated oil seed goes to Magnetic Separator where iron particles are removed from seed.
  • The oil seed then goes to Intermediate balance silo. From silos oil seed continuously poured to Crackers where the seed will be broken in four-six parts and then it goes to Dehuller. In the Dehuller the outer shell of oil seeds are removed.
  • Then seeds forwarded to Cooker through bucket elevator or bulkflow conveyor, where the cracked seed is cooked in the temperature range 75’-90’ C by providing water steam in continuously flow.
  • The cooked seed goes to flacker, where the cracked seed are converted into flakes shape which thickness is 1.5-2mm.
  • The flakes then goes to Drier-Cooler through conveyor. Where the flakes are dried and cooled in continuous flow.
  • The cooled flakes are forwarded to extraction section where through conveyor.

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Salient Features

The strides made by Balaji Engineering in solvent extraction technology have resulted in achieving very high efficiency. Adapting to the latest technology of extraction equipment, this process involves low hexane loss. Continuous Solvent extraction plants designed and supplied by Balaji Engineering are the most efficient and economical in processing cost.

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