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Alaqua 7004 Boulevard East, Suite 28A,Guttenberg, NJ USA 07093    +(00-1) 551 482 7568   

The Ultimate Guide To Solvent Recovery Systems

Date:27 August, 2021   |   No Comments   |   Posted By Team Alaquainc

Solvent recovery systems are the process of recovering and reusing solvents used in the extraction of cannabis. Chemical solvents are too costly, particularly in the commercial cannabis sector. Solvent recovery is a great technique to save money due to the high cost of solvents. Solvents used in cannabis extraction procedures, such as hexane, butane, propane, ethanol, and isopropyl alcohol, can be recycled and repurposed.

The solvents are collected and separated using distillery operations after they have been used. When the solvents approach boiling and condense into vapor, special distillery tanks are employed to heat and separate them. The steam vapor is collected and sent to an air-cooled condenser. The solvents cool to a pure liquid that may be reused after chilling.


Work of Solvent Recovery System:

Solvent recovery systems are based on distillation, which separates volatile and nonvolatile solutions in a solvent. Similar to how a vapor degreaser works, the solution is boiled, then the vapors are condensed back into liquid in a separate tank. Different elements of the solvent and pollutants boil at different temperatures: oils and soils generally boil at considerably greater temperatures than solvents. Paint thinner, which is used to remove paint from paint guns and parts, is an excellent illustration of this; because the solvent boils at considerably lower temperatures than paint, boiling the mixture results in the pure solvent in one tank and paint sludge components in another.


Fractional vs. Simple Distillation and How to Segregate Multiple Solvents?

Simple distillation attempts to separate one solvent in the solution and recover the bulk of the solvent in the solution, as described above and shown by the solvent recycling example. Simple distillation is the process of condensing hot-boiled vapors directly from the solvent recycler’s boiling tank. Because condensing occurs so near to the boil “sump,” only one volatile solvent can be recovered, and the purity of the solvent may contain trace amounts of non-volatile contaminants carried by the boiling, volatile vapors. Vapor degreasers employ the same technique. While the recovery of a single volatile solvent can sometimes reach 99 percent or more, greater recoveries are occasionally required.


Latest Blog: Advantages of Continuous Distillation


Fractional distillation is used when greater purity recovery or separation of two or more volatile components (such as water and isopropyl alcohol) is needed. To achieve better purity solvent recovery and separation of various volatile solvents, fractional distillation employs a reflux column between the boiling tank and condenser coils. This approach has the potential to achieve 99.9% solvent recovery and 99.9% solvent purity, which is popular in electronic/PCB production, medical device manufacturing, and aerospace applications.


Utilized solvent recovery system and recycling benefits:

  • Chemical waste from solvents is reduced.
  • Reduce your purchasing of new solvents.
  • Reduce the influence on hazardous waste producers’ permit status.
  • When utilizing safer but more expensive designed solvents, you can get a quicker return on your capital equipment.
  • Savings on storage

Alaqua supplies different types of processing equipment such as evaporators, crystallizers, solvent recovery systems, distillation equipment, and spray dryers to fulfill various industrial demands. Along with processing equipment, Alaqua also provides installation and commissioning services, fabrication of equipment, training of personnel, retro-fitting services, and field and troubleshooting services. Contact us today to know more!

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