Short Path Distillation

Short Path Distillation is working under a high vacuum short time to take a mild heating for separation, concentration and purification of heat-sensitive substances and high molecular weight compounds.

Short Path Molecular Distillation - Basic Principles.

Molecular distillation, also known as short path distillation, is a specialized liquid-liquid separation technique. Unlike traditional distillation that relies on boiling point differences, molecular distillation separates substances based on the average free path of molecular movement.

As a liquid mixture flows along a heating surface and gets heated, lighter molecules escape the liquid surface and enter the vapor phase. Due to the different free paths of these molecules, setting up a proper condensation surface allows for precise separation. The pressure differential between the boiling film and the condensing surface drives vapor flow.

Why Use Short Path Distillation for your business.

When cutting-edge technology meets precision in process equipment. 

01

High vacuum levels

Low operating temperatures under high vacuum conditions, well below boiling points. Separation of liquid mixtures with significant differences in molecular mass. 

02

Short heating times

Effective separation of thermosensitive and easily oxidizable substances. High separation efficiency with mild working condition under physical separation process, protecting the separated material from contamination. 

03

Bioactive Ingredients protection

Particularly suitable for the purification of natural extracts, surpassing traditional distillation and standard thin-film evaporators. Separation of materials with similar molecular masses but distinct properties

Which Material Can Be Purified?

Innovative Technology for Superior Liquid-Liquid Separation and Purification

fish oil decolorization process equipment

Fish Oil Refining and Concentration

Traditional methods often result in dark-colored, strongly flavored products with high peroxide values and low recovery rates. Molecular distillation, however, achieves a product with EPA + DHA content of 72.5%, a recovery rate of 70%, light color, pure aroma, and low peroxide value.

thin film evaporator

Effective Separation and Purification of Lactic Acid

SPMD is considered to be one of the most promising methods for lactic acid separation due to its low evaporation temperature and short residence time which minimises the problem of thermal decomposition.

removal of plasticizer with advanced process technology

Removing Plasticizer in Oil Lipids

SPMD can effectively remove high concentrations of plasticizers while preserving the fatty acid composition of fish oil, and it does not produce trans fatty acids.

fish oil omega 3 concentration equipment

Biodiesel Purification System

Essential for processes involving decolorization and purification in sectors like biofuels and environmental protection.

Molecularly Distilled Monostearic Fatty Acid

Short Path Molecular Distillation (SPMD) is currently the only industralized and effective separation process, which basically comprises two processes, removal of light components and evaporation of monoglycerides.

benefits of CBD oil for medical therapeutic and health products

Separation of Monomer CBD from Industrial Cannabis

The separation in Molecular Distillation System is realized by the average free path of the vapor molecules generally less than 25mm, which is greater than the distance between the evaporation surface and the condensation surface, when heavy and light molecular matter escapes from the liquid phase main matter, light molecular matter can reach inner condenser and get captured.

Tailor Made Product Portfolio

Greatwall Process and Control offers a range of high-quality and customizable solutions for the separation and purification of a wide range of biochemical compounds. Our equipment utilizes a short-path distillation process that allows for efficient and precise separation of compounds with low boiling points, while minimizing thermal degradation and cross-contamination.

We offer a variety of configurations and sizes to meet the specific needs of our customers, with options for various materials of construction, feed rates, and control systems. Our portfolio includes both manual, semi-automatic and fully automated systems, as well as options for various process operations.

We pride ourselves on providing reliable, efficient, and cost-effective solutions for industrial molecular distillation applications across a range of industries, including oil, pharmaceuticals, food additives and cosmetic, nutriential, fine chemical and biochemical.

Moreover, we conduct in-house distillation application tests as a service to verify the equipment selection and specifications. 

  • Lab. scale single stage short path molecular distillation unit
  • 0.1 ㎡ heating area

 

  • Pilot scale 2 stages short path molecular distillation unit
  • 2 stages columns with 0.5m² heating area
  • Large-scale short-path molecular distillation unit
  • 4 stages columns with 5m² heating areas
Separating with physical technology that cannot be solved by the ordinary separation method

Safe and Environmental Friendly Production Process

  • Working under high vacuum conditions of 0.1Pa (absolute pressure), the liquid mixture flows along the heating plate and is separated far under the boiling point.
  • The greater the molecular weight difference, the greater the molecular free path difference, and the more pure the distillate.
  • The higher the vacuum, the greater the free path.
  • Short distance between heating and condensing surface with minimum resistance.
  • The average free paths of light components are long, thus light molecular matter can reach the built-in condenser and get captured.
  • The heavy molecular component has a shorter free path than the distance from the heating and condensing surface, so it can not reach the built-in condenser surface.
  • Only in a very short time, the thermal decomposition or polymerization can be minimized to eliminate the damage to the product compounds.

Application Range of Short Path Distillation Unit

Fine Chemistry

Erucyl amide,alcohol, oleamide, glycerides, herbicides, halogenated alkanes, pesticides, silicone oils, waxes, fatty acids, etc.

Oil

Base oil, bright oil, biodisel oil, lubricating oil, vaseline, fir oil, residual tar, waste lubrication oil, etc.

Pharmaceutical

Acyl chloride, amino acid ester, vitamin E, glucose derivative, terpene ester, natural or synthetic vitamin, β-carotene, gingerol, capsicum pigment, etc.

Food and Additive

Monoglycerides, palm oil, tocopherol, fish oil, rice bran oil, fatty acids and their derivatives, dienoic acid, Vegetable oil, diglycerides, lactic acid, linseed oil, conjugated linoleic acid,etc.

Cosmetic & Pesticide

Wool fatty acid, lanol, alkyl glycosides, including algae, roots of plants, extract of capsicum, high fat ester, turmeric essential oil,etc.

Plastic & Environmental Protection

Epoxy resin, epoxidated oil, isocyanate, plasticizer, stabilizer, polyether and polyether polyol,oil emulsion, waste water, etc.

How To Tailor Your Solution?

We are proposing the process equipment based on your production process flow and practical requests.

Tailored Process Engineering for Optimal Performance.

Step 1: Technical Communication and Technical Clarification

At the outset, our team engages in detailed technical communication with your experts to gain a thorough understanding of your specific process requirements and operational challenges. This phase involves a meticulous technical clarification process, ensuring every aspect of your production needs is captured accurately.

  • In-depth requirement analysis
  • Process feasibility discussions
  • Identification of key technical parameters

Step 2: Experimental Testing with Minimum Sample

To ensure that our solution aligns perfectly with your expectations, we conduct extensive experimental testing on a laboratory and pilot scale. This phase is crucial for:

  • Validating process viability
  • Process flow design and simulation
  • Optimization of process parameters

Step 3: On-Site Survey with Engineering Team

Our engineering team conducts on-site surveys to grasp the intricacies of your operational environment. This step is vital for:

  • Precise equipment selection
  • Adapted design considerations
  • Alignment with existing infrastructure

How We Get Optimized Solution?

Step 4: Solution Customization and Design Approval

Leveraging advanced 3D design technology, we customize the solution to fit your unique process needs. This stage involves:

  • Tailored equipment design
  • Iterative design improvements
  • Client collaboration and design approval

Step 5: Contract and Agreement Signing

Post design approval, we formalize our engagement through a contract that details every aspect of the project delivery, ensuring:

  • Clear project deliverables
  • Transparent timeline and milestones
  • Production quality commitments

Step 6: Equipment Fabrication, Installation, and Commissioning

With a focus on top-tier manufacturing and stringent quality control, our fabrication phase adheres to the highest industry standards. This stage encompasses:

  • Precision engineering and manufacturing
  • Robust quality control protocols
  • Seamless installation and commissioning

Step 7: Production Inspection and Acceptance

Before the final handover, we conduct a comprehensive inspection and testing phase to ensure the equipment performs as intended. This step includes:

  • Rigorous performance testing
  • Client-involved inspection
  • Delivery upon acceptance

Step 8: After-Sales Services and Guidance

Our commitment to your success extends beyond delivery upon request. We provide:

  • Extensive after-sales support
  • Operational training and guidance
  • Long-term maintenance services

Our Services

From Process Engineering to Complete Production Information-Based Design & Supply

24/7 Support

Our sales team will respond to your inquiries within 24 working hours, and after-sales support is assured within 48 hours.

Online&Site Tutorials

Process operations and technical documents are available for handover and ensure that each operator receives them prior to system unit operation.

Powerful Design Capacities

Starting from the initial technical specifications and process flow to meet your expected target output quality, to the final approved performance is guaranteed.

Strict Quality Control

Sophisticated equipment manufacturing, strict production quality control, inspection, and testing prior to delivery.

Quality Assurance Statement

We stand behind our products with a comprehensive warranty, covering any defects in materials and workmanship. Our dedicated customer service team is always ready to assist with any concerns, offering solutions and support to ensure your complete satisfaction.

On Site Commissioning

Engineers with 10+ years of experience will be dispatched upon request to support the start-up and commissioning work on-site.

Get A Precise Solution

We will contact you within two working days, please pay attention to the email with the suffix”@greatwallcontrol.com”