Recently, an exciting piece of news in the industry has attracted widespread attention — the world's first 8-effect evaporator technology independently developed by Jiuye Chemical is about to be applied in an alumina project in Indonesia! This breakthrough has aroused curiosity among many people: Is the 8-effect technology reliable? How significant is its energy-saving effect? And how long will it take to recover the investment cost? With these core questions, we specially interviewed Chairman Ju of Jiuye Chemical to bring you authoritative answers!

Question 1: Is the 8-effect evaporator technology reliable after all?

In response to the key question regarding "technical reliability", Chairman Ju delivered a firm and resounding reply. Starting from technical principles and moving on to practical experience, he broke down the information layer by layer to dispel concerns:

Evaporation in alumina production can be categorized into high-concentration and low-concentration scenarios. From the perspectives of investment and return on investment, our 8-effect evaporator is more suitable for low-concentration evaporation scenarios. There is a core logic here: the higher the concentration, the more obvious the boiling point elevation, which will occupy more effective temperature difference. After rigorous calculation, the total effective temperature difference of the 8-effect low-concentration evaporator is slightly larger than that of the 7-effect high-concentration evaporator, while the temperature difference distributed to each effect point is basically the same for both.

More importantly, Jiuye Chemical has solid and tangible successful experience to back it up: "We have already built over a dozen sets of 7-effect high-concentration evaporators, all of which are operating smoothly with sufficient effect-point temperature difference and driving force. Since the 7-effect evaporator can be put into stable operation, the 8-effect low-concentration evaporator — which has a comparable effect-point temperature difference and a better total effective temperature difference — will certainly work with no issues!"

Chairman Ju further emphasized that every technology developed by Jiuye is not an impulsive product of random thinking: "When we launched the 7-effect evaporator back then, people also had doubts. However, a few years later, the 7-effect evaporator became the mainstream technology in the alumina industry. The 8-effect evaporator has also undergone rigorous theoretical calculation and verification, and we firmly believe there are no technical issues with it at all!"

Question 2: How much energy can it save? And how long does it take to recover the cost?

Regarding "energy conservation" and "cost recovery" — the two aspects that everyone is most concerned about — Chairman Ju provided intuitive answers with specific data, making a clear comparison between domestic and foreign scenarios:

First, let's look at the energy-saving effect

Taking steam prices as a reference (the domestic average is 150 yuan/ton, slightly higher to over 180 yuan/ton in southern China, and twice the domestic average in foreign countries such as Guinea):

Domestic scenario: For each ton of alumina, using the 8-effect evaporator can reduce the cost by 14-15 yuan;

Overseas scenario (taking Guinea as an example): Due to high energy costs, the cost per ton of alumina can be reduced by approximately 30 yuan, and the energy-saving advantage is even more prominent.

Next, let's calculate the cost recovery period

Although the investment in the 8-effect evaporator is slightly higher than that in the 7-effect one, its cost recovery speed far exceeds expectations:

Domestic scenario: Based on the average steam price of 150 yuan/ton, the additional investment can be recovered in only 9 months;

Overseas (taking Guinea as an example): The cost can be recovered in 6 months, and returns can be seen in the short term!

Conclusion: Why Is the 8-Effect Evaporator Worth Looking Forward To?

From Chairman Ju's responses, we can clearly perceive the core competitiveness of Jiuye Chemical's 8-effect evaporator:

1. Solid Technology: Backed by rigorous calculations and mature experience with 7-effect evaporators, it is fully capable of adapting to low-concentration scenarios without any pressure;

2. Obvious Energy Savings: It can significantly reduce costs in both domestic and overseas scenarios, and the advantage becomes more pronounced in regions with higher energy costs;

3. Fast Cost Recovery: The cost can be recovered in a maximum of 9 months and a minimum of 6 months, with low investment risk and stable returns.

   Today, this "world's first" technology has been implemented in Indonesia, and it will undoubtedly become a new choice for cost reduction and efficiency improvement in the alumina industry in the future. For enterprises pursuing energy conservation and profits, the 8-effect evaporator may well be one of the optimal solutions available right now!