Chapter 432： where the mission lies!

Several researchers who had previously refuted Tian Zian looked at each other.

Is this not true?

One of them, Sun Jie, stood up with some disagreement.

Although a doctor from Wuhan University of Technology is a bit inconspicuous among the doctors of famous schools, sometimes you can't just look at the school.

Wuhan University of Technology is only a 211 university, but in the subject of materials science and engineering, the Ministry of Education's assessment level is A+, and there are only three universities in the country that have reached A+ level: Tsinghua University, Beihang University and Wuhan University of Technology.

In the field of materials, Wuhan University of Technology is stronger than Zhejiang University, Harbin Institute of Technology and Shanghai Jiaotong University.

"Director, do you think vacuum distillation is feasible? What about the scientific basis?"

Sun Jie's face was neither humble nor arrogant, and said calmly: "You also often say that scientific research must be down-to-earth, you can have a certain amount of scientific fantasy, but it cannot be divorced from reality. It is generally accepted in the academic world that the vacuum distillation method is only a solution, but there is no Which team declares it has been breached."

Chen Chong raised his eyebrows, "Dr. Sun's remarks are good, but since it can be brought up, it must still be realized."

"Professor Fang and I have been discussing this vacuum distillation method for the past two days." Chen Chong smiled at Fang Haosen, "Professor Fang, please explain to them this continuous distillation method for purifying lactide. "

"good."

Fang Haosen nodded, then looked around at the researchers in the entire laboratory. When his eyes moved to Tian Zian, he paused for a while and gave him a deep look.

When I communicated with Chen Chong before, the other party mentioned this Tian Ziang a few times, but today is really different.

Guanghua University has extremely high salaries, and although its comprehensive strength is not high, its scientific researchers are not much lower than Chen Hao, a 985 university.

Being able to put forward a different view from other people in such a bunch of doctors from famous universities, and it is still the same as what Chen Chong and Fang Haosen think...

Only Tian Ziang is alone!

Before that, Chen Chong smiled and bet with him that a few people would mention this vacuum distillation method.

Chen Chong guessed 2 people, and he guessed 1 person.

He guessed right, but he also guessed wrong.

He originally thought that this person would be Dr. Xia Yao, but he never expected it to be Tian Ziang, who had suddenly emerged.

"Academia and industry both believe that the vacuum distillation method has high investment in equipment and high technical requirements, which is difficult to achieve. But if you want to prepare lactide with high optical purity and high yield, vacuum distillation method is the best choice! "

Fang Haosen said with a light smile: "The advantage of the distillation method is that there is no need to use other kinds of solvents, so as to ensure that no new impurities are introduced in the purification process, and the equipment is easy to be large-scale and continuous production."

Sun Jie couldn't help but ask, "Professor Fang, but you also said that distillation is technically demanding and difficult to implement. This is unrealistic!\b"

"Student Tian Zi'ang, do you know who first proposed the continuous distillation and purification of lactide method?" Fang Haosen suddenly turned to Tian Zi'ang.

On the other hand, Chen Chong had a funny look on his face.

There were also a few people in the crowd who suddenly realized, and suddenly felt a little embarrassed.

"Uh... I really don't remember this, I didn't watch the earliest version." Tian Zi'ang scratched his head and said embarrassedly.

"This method of continuous rectification and purification of lactide was first proposed by me.\b" Fang Haosen said indifferently as if to say something inconspicuous.

This is just something he mentioned in his spare time before. At that time, he had some ideas, but he was delayed and forgotten by things in the school later.

Now it was Sun Jie's turn to be embarrassed. After all, this happened a few years ago. He forgot all about it for a while. He didn't expect the author to be in front of his own home.

"After discussing with Director Chen these days, we have always believed that the continuous rectification and purification of lactide method can be used in the purification process of lactide. As for how to implement it, I will give you a good explanation. speak."

As soon as Fang Haosen said this, the ears of everyone below stood up, for fear of missing a word.

Because this will be the most advanced technology in the field of lactide, or even biodegradable materials.

"The continuous distillation and purification of lactide can adopt a three-column process.

The vacuum operation of the first rectifying tower removes low-boiling components at the top of the tower, the vacuum operation of the second rectifying tower removes all meso-lactide at the top of the tower, and the vacuum operation of the third rectifying tower obtains high purity at the top of the tower. The lactide product, and the yield of this lactide with a purity of more than 99% will be higher than 90%! "

The purity is above 99%, and the yield of lactide is higher than 90%!

"hiss…"

I don't know who took a breath.

However, no one paid attention to this at this time, and many people were still in shock!

The composite solvent multiple recrystallization method mentioned by Xia Yao before is a commonly used purification process in the industry. Because it is easier to operate, the yield is not high, only 35.4%.

90% compared to 35.4%…

This is close to more than double the increase!

The reason why the production capacity of lactide is insufficient in China is that it is blocked by this purification process.

The lactide yield of most biotechnology companies is only 30%-50%, and the process is not mature enough to even supply the current Chinese market, not to mention the full implementation of the plastic restriction order next year.

But even the industry-leading company NatureWorks, the other party's announced lactide yield is 78.6%, but the unannounced laboratory technology is estimated to have exceeded 80%.

Sun Jie and several researchers next to each other looked at each other, their eyes were full of incredible.

Sun Jie couldn't help swallowing a saliva. As for Professor Fang Haosen's words, if he can really do it, then...

He opened his mouth, and said with some disbelief and trembling: "Well, isn't that in the field of lactide or even biodegradation, we China can not only break the technical blockade of foreign giants, but also achieve corner overtaking and become the world's leading level ...?"

The result is horrific!

Originally, they thought that if they could break the lactide technology within a month, then they would conduct further in-depth research to improve the yield of lactide and become the first among domestic counterparts. The ultimate goal was to solve the problem of insufficient domestic production capacity and rely on foreign imports problem.

And what Professor Fang Haosen said...

This, this amount of information is too much!

Not only can it solve the technical blockade of China led by NatureWorks, but also can counterattack and occupy the international market while supplying domestic PLA raw materials (lactide).

You know, in the future of several wealth codes, there is environmental protection!

Environmental protection, pension, space exploration, energy... These are definitely one of the mainstream in the future!

And environmental protection is to eliminate the existing non-degradable materials, UU reading www.uukanshu. com also increased the promotion of degradable materials.

As a new type of non-degradable material, polylactic acid (PLA) is one of the most popular in academia and industry.

At this time, after harvesting everyone's shock, Chen Chong took two steps forward.

He said loudly:

"The president said that the existence of our Guanghua University is to solve the dilemma of the country being blocked by Western countries in the technical field."

"Everyone, we can't be \bfollowers and run after other people's ass. Because \u001d doesn't have much time for us in China! What we have to do is what ordinary people can't do and lead this era. Tech frenzy!"

"On our shoulders will be the expectations of our 1.4 billion compatriots."

Chen Chong clenched his fists tightly in front of his chest, his eyes were heavy, and his voice was passionate.

"This is the mission of our Guanghua University!"

ps: Ask for a recommendation ticket, ask for a monthly ticket!