Evaporative Crystallizers

Roben, Mfg, Inc. is a leading manufacturer of evaporative crystallizers, specializing in the design, fabrication, and supply of high-quality crystallization equipment for various industries. With our expertise and state-of-the-art manufacturing facilities, we deliver reliable and efficient evaporative crystallizer solutions that meet the most demanding requirements.

Contact Us

What is an Evaporative Crystallizer? An evaporative crystallizer is a process equipment designed to create solid crystals from a liquid solution by removing solvent through evaporation. The crystallization process is driven by increasing the concentration of the solute in the solution, which causes it to reach supersaturation and precipitate as crystals. Evaporative crystallizers are crucial components in many industrial applications, as they enable the production of high-purity solids, recovery of valuable products, and concentration of solutions.

Why are Evaporative Crystallizers Needed? Evaporative crystallizers are essential for various reasons

  1. Solution Concentration: Evaporative crystallization is an effective method for concentrating solutions, as the solvent is removed while the solute remains in the crystalline form.
  2. Product Recovery: By carefully controlling the evaporation rate and supersaturation, evaporative crystallizers can maximize the recovery of the desired product from the solution.
  3. Impurity Removal: Evaporative crystallization can be used to remove impurities from solutions, as the impurities often have different solubilities than the desired product.
  4. Energy Efficiency: Evaporative crystallization can be more energy-efficient than other separation techniques, especially when coupled with heat recovery systems.
  5. Versatility: Evaporative crystallizers can handle a wide range of solutions, from inorganic salts to organic compounds, making them suitable for various industries.

Evaporative Crystallizer Specifications and Characteristics: At Roben, Mfg, Inc., we offer a wide range of evaporative crystallizer options to suit your specific needs. Our crystallizers are designed to handle various process conditions and operational demands, including:

  1. Evaporation Method: We offer different evaporation methods, such as forced circulation, natural circulation, and falling film, to accommodate different solution properties and process requirements.
  2. Heat Transfer: Our crystallizers can be heated using various methods, such as steam, hot water, or thermal oil, depending on the available utilities and process conditions.
  3. Vapor-Liquid Separation: We provide efficient vapor-liquid separation systems, such as cyclones, demisters, and condensers, to ensure high-quality crystal products and minimize solvent losses.
  4. Solids Handling: Our evaporative crystallizers are equipped with robust solids handling systems, including classifiers, deliquoring devices, and discharge valves, to facilitate efficient crystal removal and downstream processing.
  5. Automation and Control: We offer advanced automation and control systems, including PLC-based controls, HMI interfaces, and data logging, to ensure optimal process performance and product quality.

Evaporative Crystallizer Types: Roben, Mfg, Inc. manufactures a comprehensive range of evaporative crystallizer types, including

  1. Forced Circulation Evaporative Crystallizers
  2. Natural Circulation Evaporative Crystallizers
  3. Falling Film Evaporative Crystallizers
  4. Rising Film Evaporative Crystallizers
  5. Multiple Effect Evaporative Crystallizers
  6. Vapor Recompression Evaporative Crystallizers
  7. Agitated Thin Film Evaporative Crystallizers
  8. Wiped Film Evaporative Crystallizers
  9. Draft Tube Evaporative Crystallizers
  10. Fluidized Bed Evaporative Crystallizers

Evaporative Crystallizer Accessory Options: We provide a variety of accessory options to enhance the functionality and performance of our evaporative crystallizers

  • Seeding Systems
  • Fines Removal Systems
  • Crystal Washing and Deliquoring Equipment
  • Particle Size Analyzers
  • Instrumentation and Control Systems
  • Filtration and Drying Equipment
  • CIP and SIP Systems
  • Sampling and Inspection Ports
  • Heat Recovery Systems
  • Vapor Scrubbing and Treatment Systems

Evaporative Crystallizer Industries Served: Roben, Mfg, Inc. serves a wide range of industries that require evaporative crystallizers, including

  • Chemicals and Petrochemicals
  • Fertilizers and Agricultural Products
  • Pharmaceuticals and Fine Chemicals
  • Food and Beverage
  • Mining and Metals
  • Pulp and Paper
  • Water Treatment and Environmental
  • Energy and Power Generation
  • Specialty Chemicals
  • Biotechnology and Life Sciences
  • Textiles and Fibers
  • Ceramics and Advanced Materials
  • Electronics and Semiconductors
  • Oil and Gas

Certifications and Standards: Our evaporative crystallizers are designed and manufactured in accordance with the most stringent industry standards and certifications, ensuring the highest level of quality, safety, and performance. These include

  • ASME: Compliant with ASME standards for pressure vessel design and manufacturing.
  • ASME BPE: Compliant with ASME BPE standards for bioprocessing equipment.
  • cGMP: Designed and fabricated in accordance with current Good Manufacturing Practices (cGMP) for pharmaceutical and biotech applications.
  • FDA: Compliant with U.S. Food and Drug Administration (FDA) regulations for food and drug processing equipment.
  • ATEX: Compliant with ATEX directives for equipment used in potentially explosive atmospheres.
  • PED: Conforms to the Pressure Equipment Directive (PED) for the European Union market.
  • ISPE: Adheres to the International Society for Pharmaceutical Engineering (ISPE) guidelines for equipment design and qualification.
  • NACE: Compliant with NACE standards for materials selection and corrosion resistance.
  • CE Marking: Conforms to European Union directives for health, safety, and environmental protection.
  • ISO 9001: Manufactured under a quality management system certified to ISO 9001 standards.

For more information about our evaporative crystallizer solutions or to request a quote, please contact Roben, Mfg, Inc. today. Our experienced team is ready to assist you in selecting the right crystallization equipment for your specific application.

Evaporative Crystallizers Frequently Asked Questions (FAQs)

What are the main factors affecting crystal growth in an evaporative crystallizer?

The main factors affecting crystal growth in an evaporative crystallizer include

  • Evaporation rate and supersaturation level
  • Solution concentration and composition
  • Temperature and pressure
  • Presence of impurities or additives
  • Seeding conditions
  • Residence time and crystal retention
How can I control the particle size distribution in an evaporative crystallizer?

Particle size distribution in an evaporative crystallizer can be controlled by

  • Adjusting the evaporation rate and supersaturation profile
  • Implementing proper seeding techniques
  • Controlling the solution concentration and composition
  • Optimizing the temperature and pressure conditions
  • Utilizing fines removal systems or crystal classification techniques
  • Adjusting the residence time and crystal growth conditions
What are the advantages of evaporative crystallization over other crystallization methods?

Evaporative crystallization offers several advantages over other crystallization methods, such as

  • Ability to handle high-viscosity and fouling-prone solutions
  • Efficient removal of solvent and concentration of solutions
  • Potential for heat recovery and energy savings
  • Effective removal of impurities with different solubilities
  • Versatility in handling a wide range of solutions and products
  • Compatibility with continuous and batch operation modes
How do I select the appropriate evaporative crystallizer type for my application?

The selection of the appropriate evaporative crystallizer type depends on various factors, including

  • Solution properties and composition
  • Required production capacity and scale
  • Desired crystal size, shape, and purity
  • Available utilities and heat sources
  • Process conditions (temperature, pressure, viscosity, etc.)
  • Fouling and scaling tendencies of the solution
  • Capital and operating cost considerations
  • Regulatory and safety requirements
What are the common challenges encountered in evaporative crystallization processes, and how can they be addressed?

Common challenges in evaporative crystallization processes include

  • Fouling and scaling of heat transfer surfaces
  • Entrainment of fine crystals in the vapor phase
  • Inconsistent crystal size and shape
  • Difficulty in achieving the desired level of supersaturation
  • High energy consumption and utility costs
  • Corrosion and material compatibility issues

These challenges can be addressed by

  • Proper crystallizer design and material selection
  • Implementation of effective seeding and nucleation control strategies
  • Optimization of process conditions (evaporation rate, temperature, pressure)
  • Utilization of fines removal and crystal classification techniques
  • Integration of heat recovery systems and energy-efficient designs
  • Regular maintenance and cleaning of equipment
  • Process monitoring and control using advanced instrumentation and automation systems

Ask A Question

Fields Marked with * are required

Limit 2000 Characters


By submitting this form, you are consenting to receive marketing emails from: . You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact