In the wave of advocating green industry globally, the alumina industry is facing unprecedented energy consumption challenges. As a leader in the industry, Henan Jiuye Chemical Equipment Co., Ltd. is always driven by technological innovation. After successfully developing the world's first seven-effect evaporator group, it has once again broken through technical barriers and launched an eight-effect sectional evaporator, bringing a revolutionary breakthrough in the improvement of energy efficiency in alumina production.

I. Technical Inheritance and Innovative Breakthroughs

Henan Jiuye Chemical Equipment Co., Ltd. has accumulated rich engineering experience and technical precipitation through more than twenty years of deep cultivation in the field of evaporation equipment. The research and development of the eight-effect sectional evaporator is based on its original precise thermal balance calculation technology and multi-effect temperature difference optimization distribution system. Through in-depth research on the characteristics of low-concentration mother liquor (caustic alkali concentration ≤ 215g/L), the technical team has creatively increased the number of effects to eight, and strictly controlled the temperature difference of each effect within the range of 3-4℃, achieving a thermal efficiency equivalent to that of a high-concentration seven-effect evaporator.

Core Technical Advantages

Patent Thermal Balance System: Three-dimensional dynamic simulation technology is adopted to ensure the uniform distribution of thermal load among each effect, and the steam utilization rate is increased by 12%.

2. Modular Redundant Design: In case of a single-effect failure, it can be automatically isolated and switched to the seven-effect operation mode, ensuring a continuous operation rate of 99.8%.

3. Intelligent Control System: Equipped with the temperature control system independently developed by Henan Jiuye Chemical Equipment Co., Ltd., it can optimize the evaporation parameters in real time.

As of 2025, Henan Jiuye Chemical Equipment Co., Ltd. has successfully implemented nearly a hundred sets of large-scale multi-effect evaporation systems globally. This includes the first 600t/h eight-effect evaporator project in China. The operation data shows that its steam-water ratio is as low as 0.32, setting a new industry record.

II. Energy-saving Data and Economic Benefits

Taking an alumina plant with an annual output of 1.2 million tons as an example, the energy-saving benefit data of the eight-effect evaporator of Henan Jiuye Chemical Equipment Co., Ltd. is remarkable:

In regions with high steam costs such as Guinea (where the steam price is ≥ 300 yuan per ton), the annual cost savings can reach 45 million yuan, and the investment payback period can be shortened to less than 6 months. This disruptive cost advantage makes the eight-effect evaporator of Henan Jiuye Chemical Equipment Co., Ltd. the preferred solution for new projects and the renovation of existing factories. 

III. Full Lifecycle Service System

Henan Jiuye Chemical Equipment Co., Ltd. provides the eight-effect evaporator with:
- Customized design: Offering gradient solutions ranging from three-effect to eight-effect based on the characteristics of the customer's mother liquor.
- Intelligent operation and maintenance system: Achieving remote monitoring through the IoT platform, with a fault warning response time of less than 2 hours. 

The R&D center of Henan Jiuye Chemical Equipment Co., Ltd. has a team of over a hundred evaporation technology experts, and has accumulated nearly 40 patents in the field of evaporation.

IV. Benchmark Cases and Industry Recognition

The eight-effect evaporator of Henan Jiuye Chemical Equipment Co., Ltd. has been successfully applied in many leading enterprises in the industry:

- China Aluminum Guangxi Branch: After the 600t/h project was put into operation, the comprehensive energy consumption was reduced by 15%, and it was rated as a "National Green Factory".
- United Company RUSAL: After the transformation using the eight-effect technology of Henan Jiuye Chemical Equipment Co., Ltd., the annual natural gas consumption savings amount to 120 million yuan.
- Guinea Alumina Project: Under the working condition where the steam cost is as high as 380 yuan per ton, the investment payback period is only 5.5 months.

With its outstanding technical strength, Henan Jiuye Chemical Equipment Co., Ltd. has successively won the honors such as "National Technological Innovation Demonstration Enterprise" and "Advanced Unit of Industrial Energy Conservation in China", and its eight-effect evaporator technology has been included in the "National Key Energy Conservation and Low-carbon Technology Promotion Catalogue".

V. Future Prospects and Technological Layout

As one of the formulators of industry standards for evaporation equipment in China, Henan Jiuye Chemical Equipment Co., Ltd. always takes the mission of "considering everything for users and taking all aspects of users into account" and "making industrial evaporation greener". It uses continuously innovative technologies to create value for global alumina enterprises and leads the industry to accelerate towards a low-carbon future.

If you need to learn more about the eight-effect evaporator and related information, you can click for online consultation to contact us, or directly call us at 13774260595!