Low – temperature Evaporation Equipment

Low-temperature evaporation technology is a new type of physical separation technology. It is an evaporation process carried out at low temperatures. The evaporation chamber is evacuated to a vacuum state by a vacuum pump, with a vacuum degree of approximately -95 kPa. Under this pressure, the boiling point of water is between 35 degrees Celsius and 40 degrees Celsius. The solution is continuously circulated and atomized onto the surface of the heat exchanger by a forced circulation pump, and the water in the solution is evaporated. Then, the water vapor is cooled by the condensing device, so that the purpose of separating water from the solution can be achieved.

Core Advantages

Technically

low evaporation temperature leads to better effluent quality as fewer organic substances evaporate, and decreasing evaporation pressure can increase the concentration ratio of mother liquor. Also, low temperature benefits equipment material selection and reduces investment cost by extending equipment lifespan.

Practically

the equipment features high integration, demands low on-site installation conditions for quick commissioning, and has a high level of automation, which helps customers save substantial manpower and material resources costs.

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Superior Effluent Quality

Enhanced Concentration Ratio

Flexible Equipment Material Selection and Cost Advantage

High Degree of Integration

Low Installation Requirements

High Automation Level

Superior Effluent Quality


Low evaporation temperature prevents a large number of high and low boiling point organic substances from evaporating out. As a result, the quality of the effluent is enhanced, and the evaporated water merely requires simple treatment to meet the standards for either reuse or discharge.

Enhanced Concentration Ratio


With the decrease in evaporation pressure, the boiling points of some solutions also drop. This creates a larger evaporation space and further increases the concentration ratio of the mother liquor until it crystallizes and solidifies, enabling more effective concentration of the solution.

Flexible Equipment Material Selection and Cost Advantage


The low temperature during evaporation offers a wider range of choices for equipment materials. Since temperature has a significant impact on equipment corrosion and low temperature can extend the equipment’s service life, it also helps to lower the equipment investment cost compared to other methods.

High Degree of Integration


The equipment has a high level of integration, which means it is designed in a compact and comprehensive manner. This reduces the complexity of installation and enables it to adapt well to various on-site installation conditions with relatively low requirements, facilitating quick setup and commissioning.

Low Installation Requirements


It requires minimal on-site installation conditions. Whether it’s the space availability, foundation preparation, or other aspects, the simplicity of installation allows for rapid deployment in different locations, meeting the demand for quick production start-up.

High Automation Level


The equipment is highly automated, capable of operating with less human intervention. This automation not only improves operational efficiency but also helps customers save a significant amount of manpower and material resources costs in the long run, reducing the overall operational burden.

Product Specifications

Product Specification Details Product Specification Details
Heating Power 6.0 kW Energy Efficiency Rating A++
Refrigerant Type R410A Applicable Area 50-150㎡
Power Supply Voltage 220V / 50Hz Noise Level ≤25 dB
Dual Inverter Technology Supported Smart Temperature Control Supported
Remote Control Mobile App Remote Control Auto Defrost Function Supported
Operating Temp Range -15℃ to 45℃ Weight 40 kg
Dimensions (L x W x H) 850mm x 300mm x 650mm Installation Method Ceiling / Wall Mounted

Low-temperature evaporation Feature and Application：

Outstanding Effluent Quality

The low evaporation temperature keeps many high and low boiling point organic substances from evaporating, resulting in better effluent quality. The evaporated water only needs simple treatment to meet reuse or discharge standards, which is highly beneficial for water management and environmental protection.

Improved Concentration Capability

As the evaporation pressure decreases, the boiling points of certain solutions also go down. This expands the evaporation space and significantly boosts the concentration ratio of the mother liquor until it crystallizes and solidifies. It allows for more efficient concentration of the solution during the evaporation process.

Cost-Effective Equipment Aspect

Low temperature evaporation offers a wider selection of materials for equipment due to reduced corrosion risk at lower temperatures. This not only extends the equipment’s service life but also cuts down the investment cost. It provides an economic advantage in both equipment procurement and long-term operation.

Practical Operational Advantages

The equipment has a high degree of integration and demands low on-site installation conditions, enabling quick commissioning. Moreover, its high automation level reduces the need for extensive manpower and material resources, saving costs and streamlining the overall operation process.
 
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Application:

Industrial Wastewater Treatment

Low-temperature evaporation technology can be effectively applied in treating industrial wastewater. Many industrial processes generate wastewater containing various organic and inorganic substances. With its ability to prevent the evaporation of a large number of high and low boiling point contaminants and achieve good effluent quality through simple treatment of the evaporated water, it helps industries meet environmental discharge standards while recovering water for reuse, reducing water consumption and disposal costs.

Chemical Manufacturing

In chemical manufacturing, there is often a need to concentrate solutions or separate valuable components from mother liquors. The feature of low-temperature evaporation that allows for an increase in the concentration ratio of the mother liquor as the evaporation pressure decreases is highly useful. It enables more efficient extraction and concentration of chemical products, facilitating further processing steps and improving overall production efficiency.

Food and Beverage Industry

The food and beverage industry can utilize low-temperature evaporation for processes like concentrating fruit juices, extracts, or syrups. Since the low evaporation temperature minimizes the loss of flavor and nutritional components (as many of these are organic substances that don’t easily evaporate), it helps maintain the quality of the final products. Also, the equipment’s ability to meet quick installation and operation requirements is suitable for the fast-paced production environment in this industry.

Pharmaceutical Production

Pharmaceutical companies can benefit from low-temperature evaporation when dealing with drug solutions or extracting active ingredients. The precise control over the evaporation process, along with the ability to handle sensitive substances without degrading them due to the low temperature, is crucial. Additionally, the high automation of the equipment ensures consistent product quality and compliance with strict pharmaceutical manufacturing regulations.

Textile Industry

In the textile industry, low-temperature evaporation can be used for dyeing wastewater treatment. The technology can effectively remove dyes and other chemical additives from the wastewater while recovering water for reuse in the production process. The cost savings in terms of water and wastewater treatment, along with the equipment’s durability due to reduced corrosion at low temperatures, make it an attractive option for textile manufacturers.

Desalination

For desalination purposes, low-temperature evaporation offers an alternative approach. It can separate freshwater from seawater or brackish water with relatively lower energy consumption compared to some traditional desalination methods. The better quality of the produced freshwater and the lower equipment investment and operation costs make it applicable in areas where access to freshwater is limited and sustainable water supply solutions are sought.
 
 
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Low-temperature evaporation Details

Evaporation Chamber Design

The evaporation chamber has a specific shape (cylindrical or rectangular) and size. Its interior is smooth. It may have baffles or agitators. The walls are made of suitable materials.

Heat Exchange System Structure:

Consists of heat exchanger tubes/plates (copper or stainless steel alloys). Connected to a heat source. Has specific flow channels (counter-flow/parallel-flow)

Condensate Collection Mechanism:

Includes a sloped tray or tank. Tray has channels for condensate to flow to an outlet. Tank may have level sensors.

Vacuum System Components

Has a vacuum pump, valves, and pressure sensors. Pump is selected based on requirements. Valves control vacuum and isolate parts. Sensors monitor pressure.

Feed System Arrangement

Includes a feed pump, pipes, and valves. Pump has an appropriate size. Pipes are compatible with the liquid. There may be a pre-heater.

Control Panel and Instrumentation Layout

Houses temperature controllers, pressure gauges, switches, buttons, alarms, and indicators. Monitors and controls various parameters and alerts of abnormal conditions.

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Working Principle:

The equipment’s working principle involves liquid being fed into the evaporation chamber and heated by the heat exchange system. The vacuum system creates low pressure for low-temperature evaporation. Vapor condenses and is collected. The vacuum system also boosts the mother liquor’s concentration. The control panel monitors and adjusts parameters like temperature, pressure, and flow rate to ensure efficient operation.

Liquid Feeding & Heating

Liquid is fed into the evaporation chamber via the feed system. The heat exchange system supplies heat from an external source, warming the liquid for evaporation.

Evaporation at Low Pressure

The vacuum system creates a low-pressure environment, causing the heated liquid to evaporate at a relatively low temperature, preventing certain substances from easily vaporizing and ensuring better quality of the output.

Condensate Collection

The vapor rises and condenses in the cooler parts of the chamber. The condensate collection mechanism, with a sloped tray or tank and level sensors, catches and stores the condensed liquid.

Concentration Adjustment:

The low pressure from the vacuum system also increases the concentration ratio of the mother liquor until it may crystallize or solidify, facilitating further processing or waste treatment.

Efficiency and Performance:

Efficiency and performance are vital. In industrial machinery, high efficiency minimizes resource input and maximizes output. Good performance ensures smooth, reliable, and precise operation. In energy systems, efficiency gauges effective energy conversion. Performance includes meeting peak demand and adapting to conditions. For software, efficiency relates to task execution speed and resource management. Good performance means being bug-free, stable, and user-friendly. They determine a system’s success and value.

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Frequently asked questions

The heat exchange system’s design and quality (material and flow channels), vacuum system performance (stable low pressure), and proper feed system operation and maintenance (feed rate control, clean pipes) impact efficiency.

Regular maintenance (cleaning chamber and heat exchangers), upgrading control panel and instrumentation, optimizing condensate collection, using quality materials, and ensuring proper insulation help improve performance.

  • In industrial wastewater treatment, water recovery efficiency is around 70% – 90%. In chemical manufacturing for concentration, it’s 60% – 85%.
  • The equipment is designed to handle a wide variety of liquids. The choice of materials for the evaporation chamber, heat exchanger, and other components is crucial. For corrosive liquids, materials like titanium or special corrosion-resistant alloys may be used. The temperature and pressure settings can be adjusted according to the boiling point and volatility of the liquid. The feed system can be calibrated to handle liquids with different viscosities. Additionally, the control panel can be programmed to manage the unique evaporation characteristics of different liquids, ensuring efficient and safe operation for each specific liquid type.

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