Rekindle 2003

Chapter 1011 It’s hard for a clever woman to make a meal without rice
However, at this moment, Zhang Huiguo, as an industry leader, was also shocked by this sudden lineup.

Especially Chen Weiping, Yan Dazhou and Que Duanlin, Qing Yun added the word "front" when introducing them, and he knew what this meant.

These people in front of us are all leaders in their respective fields, and their joining will undoubtedly bring strong technical support to Xinguang Silicon Industry.

Zhang Huiguo felt surprised and excited, and at the same time he developed a deep respect for Qing Yun's vision.

This almost includes all the top leaders at the forefront of current polysilicon production process research.

It is also an integrated team of industry, academia and research.

Xiao Qing, who had entered working mode, directly invited the expert team to visit the scene, saying, "Time waits for no one, we must race against time."

This kind of attitude towards work naturally makes people feel awe, and those old men engaged in scientific research are even happier.

However, the original four shareholder representatives were very embarrassed and were simply ignored by Qing Yun.

But others have the qualifications to not talk nonsense with them.

Nanbowan and Nanba Rabbit from Jiazhou watched this scene from the sidelines and shook their heads helplessly. They had no choice but to take on the role of host and lead the remaining "stray people" to find a place to entertain them.

Qing Yun and his team went directly to the construction site.

The area here has begun to take shape, the civil engineering work has been basically completed, buildings are rising from the ground, and connecting pipes in the middle are being laid. The workers' enthusiasm makes the future of Xinguang Silicon Industry...Yanhuang Silicon Industry full of hope.

Zhang Huiguo stood on the construction site with a thick stack of technical documents in his hand. His voice echoed in the busy construction site as he introduced every step of the improved Siemens method in detail to the expert team present.

His explanation is easy to understand and even people who are not familiar with the polysilicon production process can clearly understand the key points of this technical path.

"Our technical approach is to improve the Siemens process, using industrial silicon as raw material, to generate trichlorosilane liquid through chlorination synthesis, and then obtain polysilicon through distillation purification and hydrogen reduction. The reduction tail gas is then dry-recovered and silicon tetrachloride is hydrogenated to form a closed-loop production. The chemical vapor deposition process of trichlorosilane in the reduction furnace is the key process of the process..."

While explaining, Zhang Huiguo used the laser pen in his hand to point to the process flow chart on the display board.

Chen Weiping, Yan Dazhou and Que Duanlin listened. They are all senior experts in the industry and are well aware of the advantages and disadvantages of the improved Siemens method.

But at this moment, I can only listen obediently.

There is no way. They are just talking about it on paper at the moment, but the old man in front of them is the real master who has developed the improved Siemens method in this field in China.

Academician Que Duanlin, the first person in China to prepare polysilicon using the silane method and former director of the National Laboratory for Silicon Materials at Zhijiang University, nodded in admiration.
"The modified Siemens method is much safer than the silane method, and its production cost is also lower than the silane method in the short term."

After hearing this, everyone felt that the improved Siemens method was far safer than the silane method, and its production cost was also lower than the silane method in the short term, but it was a pity that the three wastes were formed.

In particular, large amounts of chlorosilane residual liquid are difficult to handle.

Chen Weiping spoke first, his voice a little hoarse, "Mr. Zhang, the safety of the modified Siemens method is indeed worthy of our recognition, and the cost control in the short term is also very good."

He paused, his tone turned serious, "However, the treatment of the three wastes is a big problem, especially the chlorosilane residual liquid. The residual liquid contains a large amount of high-boiling substances and impurities, which will burn and explode when it encounters air.

If not handled properly, it will not only cause environmental pollution but may also lead to safety accidents.”

Yan Dazhou and Que Duanlin also expressed their views. They approved of the technical route adopted by Yanhuang Silicon Industry, but also pointed out the risks and challenges therein.

Zhang Huiguo listened carefully to their opinions and suggestions. He knew that the opinions of these experts were crucial to the development of Xinguang Silicon Industry.

He is a practical person, while the experts in front of him are theorists. Theory must be linked with practice, and practice must also be guided by theory.

He nodded, agreeing with everyone's views, "It is indeed a big problem, but we must look at it dialectically. I feel that this can be turned into treasure.

To be honest, whoever can find a way to make polysilicon production waste harmless and recyclable will be a national hero.”

Qing Yun listened on the side, then smiled, and whispered with Shen Jun, the disciple brought by Chen Yiquan,

"Brother Shen, what Elder Zhang said about turning waste into treasure is that this chlorosilane residue can actually be regarded as an intermediate. It is rich in trichlorosilane, dichlorosilane, and silicon tetrachloride. If it can be recycled, it will greatly reduce production costs."

In the previous life, it was this young man who solved this problem.

Although his voice was small, it was clearly heard by everyone present.

There is no way, this young man is the helmsman of this company.

After hearing Qing Yun's words, Chen Yiquan turned around and a relieved smile appeared on his face.

"Xiaojun, the youngest is right. If you can overcome this, your life will not be lived in vain."

However, Zhang Huiguo, Chen Weiping, Yan Dazhou and Que Duanlin looked at Qing Yun in surprise.

They originally thought that this young chairman was just rich, but they didn't expect that the information revealed in just a few words showed that this young man seemed to have a high level of attainment in chemical engineering.

What made them feel strange was the way Chen Yiquan addressed Qing Yun.

Old monster?

Zhang Huiguo, who had lived in Xishu for many years, naturally knew what it meant. But because he knew it, he was even more surprised. Zhang Huiguo blurted out, "Youngest?"

Chen Yiquan coughed and said, "Let me introduce Qingyun to you again, my new disciple."

Chen Yiquan's words were very calm, but everyone could see the mischievous and boastful look on the old man's face.

Academician Que Duanlin, former director of the National Laboratory for Silicon Materials at Zhijiang University, cursed in his heart, "Damn it!"
Well, a rich and powerful disciple.

What a pity it’s not our own!
“In Siemens’ improved production process, we have not yet mastered some key technologies.

During the refining process, more than 70% of polysilicon is discharged through chlorine gas, which not only increases the refining cost but also causes serious environmental pollution.

Therefore, how to improve the yield of polysilicon and reduce energy consumption is the top priority for improving the polysilicon production process. "

Upon hearing this, Qing Yun sighed helplessly in his heart.

In his previous life, the process route he participated in was called the 'Yongxiang Method', which was also the third generation of the improved Siemens method.

Before their rebirth, they had completed the iterative reserves of the ninth version of the Yongxiang method. The purity of key impurity elements in high-purity silicon products reached 11 nines, and 9% of the product quality met the requirements of P-type and N-type single crystals. Some of them reached the level of semiconductor electronic-grade crystalline silicon. This not only solved the bottleneck problem, but also had the ability to reverse the bottleneck.

However, this is an iterative process that has taken more than ten years.

If he suddenly took out the ninth edition of Yongxiang Fa at this moment, it would be like building a plasma shield in the Stone Age, which is completely useless talk.

The materials can't keep up.

When climbing the technology tree, sometimes you can advance quickly, but sometimes you can only sigh helplessly.

The difference lies in the foundation.

This time difference is the foundation.

For example, in the ninth version of the Yongxiang process, most of the reduction furnace heat shield is made of ultra-low carbon stainless steel, and the key vulnerable parts use an outer cover made of a formulated nickel-gold alloy, lined with a special new type of quartz ceramic.

In this way, the durability and safety of the reduction furnace are improved, and the production cost is reduced by reducing the use of precious metals such as gold and silver.

Unfortunately, the latter two materials are not yet available.

Make bricks without straw.

After all, every profession has its specialties, and he knows nothing about this area, which is about metallurgy and inorganic non-metallic materials.

In human history, there were the Stone Age, the Bronze Age, the Iron Age, and later the discovery of plastics, and then the application of silicon in recent decades. From another perspective, this is the progress of material development.

The materials are not good, but it is still laborious.

For example, when faced with the overheating problem of supersonic aircraft, America solved it through the use of materials, while Lao Xiong solved it through the use of mathematics and mechanics.

Flying brick - MiG-25, made entirely of stainless steel, with a speed of Mach 3, even missiles cannot catch up.

This is the miracle of great force, which fully illustrates what violent aesthetics is, and also proves that as long as the thrust is strong enough, a concrete pier can achieve supersonic speed.

Apart from the fact that it has difficulty turning and cannot perform maneuvers, you can tell me whether it is a supersonic fighter...

This idea is a victory of "system engineering", but it is not commercially viable.

What is before Emperor Yun is the improved Siemens method currently led by Zhang Huiguo, which is still the first generation optimized version.

The improved Siemens method has a history of more than 1955 years since its invention in 60. By the time Qingyun was reborn, industry participants have continuously optimized and improved the technology of the Siemens method. It has gone through three major versions and a dozen minor versions. iterate.

Fortunately, Qing Yun mastered the third-generation improved Siemens method of the entire chlorine chemical system, and he personally experienced the nine version changes of the Yongxiang method from 0 to 9.

The first edition of thermal hydrogenation technology, the second edition of silicon tetrachloride self-circulation, the third edition of small-scale cold hydrogenation technology, and the fourth edition of large-scale cold hydrogenation...

Each version is not a complete negation of the previous generation, but a partial iterative upgrade.

Otherwise it is called replacement process.

Therefore, based on the current conditions, he can use the seventh or eighth edition of the method in some places, and he can only use the first edition of the method in some places.

It's a combination of techniques.

Yun Di's mind was racing as to how to achieve the most optimal combination possible with the existing technology and materials.

"Although this is quartz glass, its thickness requirement is very strict, which leads to a very high cost. The purchase price of a reduction furnace is close to 4000 million."

When everyone heard this, they were stunned.

……

(End of this chapter)