Mechanical Vapor Recompression

Zhanggu MVR System: Leading the Revolution in Efficient and Energy-Saving Evaporation Crystallization

The perfect integration of technological innovation and industrial application

In today's world of increasingly stringent environmental requirements and rising energy costs, sustainable development for industrial enterprises faces significant challenges. Shandong Zhanggu Group Co., Ltd., leveraging a strong partnership with the Institute of Technical Physics of the Chinese Academy of Sciences, has successfully promoted the application of MVR (Mechanical Vapor Recompression) technology across various sectors including chemical processing, wastewater treatment, pharmaceuticals, food, salt production, and seawater desalination. This provides enterprises with an ideal solution for energy saving and emission reduction.

What is the MVR System?

MVR stands for Mechanical Vapor Recompression. As the most advanced and energy-efficient evaporation technology currently available globally, its fundamental principle involves using a high-efficiency vapor compressor to compress the secondary vapor generated by the evaporator. This process converts electrical energy into thermal energy, increasing the pressure and temperature of the secondary vapor, which is then recirculated to heat the material in the evaporator, enabling the recycling of the latent heat of vaporization of the secondary vapor.

Compared to traditional evaporators, the MVR system can significantly reduce energy consumption in evaporation, concentration, and crystallization processes, lower carbon emissions, and drastically cut operational costs, representing a revolutionary advancement over traditional evaporation equipment.

Core Technical Advantages of the Zhanggu MVR System

In-House Core Equipment Manufacturing Capability

Shandong Zhanggu possesses the independent R&D, design, and manufacturing capability for the core equipment of the MVR system – the Roots-type Vapor Compressor and Centrifugal Vapor Compressor. These units have been operating safely and stably for years at numerous customer sites, offering significant advantages over other products on the market:

Wide Process Adaptability

The Zhanggu MVR system can handle various complex working conditions, with a vapor handling capacity ranging from 30 to 7400 KG/hour and a vapor temperature rise covering 10-25°C. The wetted parts of the system can be constructed from the most suitable materials (including carbon steel, 304, 316, 316L, duplex stainless steel, titanium, and special anti-corrosion coatings) based on the medium being processed.

Remarkable Energy Saving Effects

The Zhanggu MVR system consumes only 15-50 kW of electricity per ton of water evaporated, with low circulating cooling water consumption, resulting in significant energy savings. Practical application data shows that the system can save up to 30%-40% in energy consumption, substantially reducing customer operating costs.

Outstanding Features of the Zhanggu MVR System

Reduced Footprint: The system features a compact layout, occupying only about 50% of the space required by traditional evaporators, and eliminates the need for peripheral equipment like boilers, pipe networks, and cooling towers.

Reduced Pipe Clogging Probability: The compact structure, short material flow path, low heating temperature, and small heat exchange temperature difference significantly reduce the probability of pipe clogging.

Suitable for Heat-Sensitive Materials: MVR evaporation technology enables low-temperature evaporation around 40°C, minimizing damage to heat-sensitive materials that are prone to degradation at high temperatures, thus preserving the quality of crystallized products.

High Degree of Automation: The system requires few control points and can achieve fully automatic, unattended operation. It is equipped with a tailor-made automatic control system featuring a high level of automation, stable start-up and operation, and fast interlocking response.

Easy Cleaning: A cleaning system can be incorporated during design and construction for thorough flushing and cleaning during shutdowns.

Wide Range of Application Fields

The Zhanggu MVR system has been successfully applied in numerous industries:

Chemical Industry: Evaporation and concentration processes in chemical, petrochemical, and biochemical sectors.

Environmental Protection: Industrial wastewater treatment, high-salinity wastewater treatment.

Food Industry: Food processing, dairy industry.

Pharmaceutical Industry: Evaporation and concentration processes in pharmaceutical production.

Other Fields: Salt production, seawater desalination, metal smelting, and salt chemical industry.

Professional Support for the Zhanggu MVR System

Technical Strength: Shandong Zhanggu Energy Saving and Environmental Protection Technology Co., Ltd. is a joint venture established by Shandong Zhanggu Group Co., Ltd. and the Institute of Technical Physics of the Chinese Academy of Sciences. It is an engineering company specializing in the research and implementation of MVR evaporation, concentration, and crystallization technology.

Professional Construction: The company maintains long-term cooperation with professional construction teams possessing qualifications in structural, mechanical & electrical equipment, and electrical installation engineering, ensuring the robustness of the structure, the safety of electrical equipment operation and personnel, and the stability of system operation.

Comprehensive Service Network: The company has over fifty sales offices and service outlets nationwide and several agents abroad, providing users with timely pre-sales, sales, and after-sales services to ensure continuous and smooth system operation.