PVC (polyvinyl chloride) and cement are two essential materials in infrastructure projects, the former is the material for most pipes, and the latter is the cornerstone of modern buildings.

These two things, which have nothing to do with high-tech, are by-products of the process of starting from the chlorine chemical route to polysilicon.

The first product produced by the chlorine chemical route is polyvinyl chloride, or PVC for short.

The second batch of products is a mixture composed of tricalcium silicate, dicalcium silicate, and tricalcium aluminate.

More importantly, cement and PVC will not be suppressed by the state's macroeconomic control.

Standing in 2003 today, going forward, the next ten years will be the era of civil infrastructure, and the amount of use will be high.

Moreover, the Portland cement produced by this process is more durable, corrosion-resistant, and low-temperature resistant than ordinary cement.

However, looking forward in 2003, the past five years have been the most difficult period for China's economy.

Even, at this point in time, it is a period of macroeconomic regulation and control of backward production capacity, and the whole society is compressing infrastructure, which is the essence of Sun Hongbing's fall.

Therefore, the vast majority of people now do not see the trend of future infrastructure madness, or dare not be sure of this trend.

It can only be said that Qingyun is a hanger, he doesn't need any careful consideration to do this kind of thing, and when the time comes, he will drive directly without the slightest hesitation.

Although he is not ready to enter the real estate industry, he is ready to earn this money with tears in his eyes.

Who said that for him, the above two are by-products......

Suppose others buy 1,000 yuan of industrial silicon to use, and Qingyun makes his own industrial silicon of the same price for his own use, he will definitely produce at least 3,000 yuan of PVC and cement.

In other words, in fact, the profits from the output of these two items can already cover the cost of making polysilicon, and there will be a surplus if it is not guaranteed.

As for the by-products after silicon trichloride, steam can be used to generate electricity and be recycled directly in the production line.

Therefore, this report is the most convenient for Qin Manman to write, and all the data can be asked for by her second uncle.

Qingyun knows how to deal with the remaining by-products and energy consumption problems, but he can't write them out now.

It's good to say that you know a little about this route, after all, it is a part of the semiconductor industry chain, look at scientific research reports, papers or something, it's no problem to understand a little bit.

But if you want to say that you are out of the times, you will come out with your own original solution......

No one else believes it when you say it.

Still, it's okay.

After all, this is the field of physical chemistry.

The fate of the Cloud Emperor.

As a professor of materialization, it is not too easy for Qingyun to fool these few Xiaobai who can only have a clear and stupid light in their eyes in this field.

After briefly blowing to a few mother-in-law gods, Emperor Yun achieved his goal.

Not only Qin Manman was dizzy when he heard it, but the eyes of the other people were all flashing with helplessness at this time.

I don't understand, I don't understand at all.

It is not for nothing that organic chemistry, inorganic chemistry, physical chemistry, and analytical chemistry are called nightmare disciplines for chemistry, pharmacy, materials science, biology, and other majors.

Even Su Caiwei, who has the highest education, is listening to books at this time.

No way, chemistry......

Turning decay into a magical discipline.

Her two degrees in mathematics and computer science combined did not study chemistry.

"But the route of the second uncle's side has not yet solved the purity problem of polysilicon, and the method they are studying now, the final polysilicon is only solar-grade, which can only be made into photovoltaic panels, and cannot be made into monocrystalline silicon."

How to solve the current problem of low purity of polysilicon......

Unfortunately, this is where Emperor Yun's profession lies.

He dared to say that he was the best person in the world who knew this thing at this time, and there was no one.

High-purity polysilicon, or even monocrystalline silicon, is not absent from Huaguo.

On the contrary, under the leadership of Mr. Lin Lanying and countless scientists of the older generation, Huaguo successfully produced monocrystalline silicon in 1958, and in 1962, Huaguo's first dislocation-free monocrystalline silicon was successfully drawn, which is also a very high level in the world.

The original Jinmen Semiconductor, Emei Semiconductor, Luoyang Silicon, and Huashan Semiconductor also relied on this to develop, and in the 60s of the last century, the number of manufacturers was as high as more than 20.

However, this is a production line that serves military-grade products.

Because of various reasons, the technology can not be iterated, resulting in the process has always stayed in the 50s of the last century, and the production technology is difficult, the scale is small, the quality is low, the pollution is large, and the energy consumption is large......

In a simple word, even in the face of the import price of hundreds of thousands of US dollars, there is no cost advantage.

Therefore, after entering the reform, in addition to the military industrial system, one domestic silicon plant is counted as one, and it has been shut down and changed one after another.

By the beginning of the century, the domestic production rate of this raw material in the civilian market was 0.

And when did the silicon industry that killed all sides in the world in Qingyun's previous life and directly dried 500,000 US dollars a ton of polysilicon to 60,000 Chinese dollars?

Solar-grade polysilicon began to rise at this moment, and was detonated by Shi Zhengrong, Yang Huaijin and others in 2005, while electronic industry-grade polysilicon was not until after 2010, when the domestic market achieved mass production because of technological breakthroughs, and the specifications were only achieved in 2015.

From the solar stage to the electronic stage, there was a gap of twelve years.

Why?

Three reasons.

First, solar grade, too profitable.

The difference between solar grade and electronic industry grade is only in purity, but there is a huge difference in the realization of the preparation route.

Therefore, the requirements for equipment are not of an order of magnitude.

But the real reason is not in the process, but in the market.

Since 97, Americaka's solar roof plan has ignited the world's photovoltaic market, which has continued to grow exponentially because of the promotion of environmental protection and other concepts, and the supply of products is seriously in short supply.

The production of simple solar-grade polysilicon has been able to make a lot of money, and in the absence of policy guidance, private capital naturally lacks the motivation to transform to the electronic industry grade.

Second, the solar grade, is too simple.

The drawing of monocrystalline silicon has no low requirements for technicians, and it can even be said that it is very high.

And the domestic talent pool ...... In the wave of closure after the change, it can be said that it has been lost.

There weren't many professionals on the market at the time.

At the beginning, in the old three factories such as Emei Semiconductor, Luoyang Zhongsilicon, and Huashan Semiconductor, which were retained after the suspension and conversion of production, ordinary operators who had only worked for one year could become technical directors in the solar-grade polysilicon factories in the Zhijiang area, and technicians with a few years of experience were the big treasures that the bosses relied on.

The high technical barriers to talent made it impossible to pull out the seedlings to help them grow, which led to the fact that monocrystalline silicon was not something that market players could afford to play at that time.

What's more, the process of monocrystalline silicon is very complex, and the speed and dimension of the growth process must be stable, so the monocrystalline furnace must have a precise and stable upper and lower part operation, rotation control system and automatic temperature adjustment system......

its equipment, energy consumption, labor, raw materials, auxiliary materials...... Compared with only solar-grade polysilicon, it is not an order of magnitude at all, which leads to monocrystalline silicon in China in the first decade of this century, and no one is willing to do it at all.

Since no one wants to do monocrystalline silicon, then as its precursor product, electronic-grade polysilicon, naturally no one will do it.

To add insult to injury, the myth of Shi Zhengrong's sudden wealth in photovoltaics has brought unimaginable incentives to the entire industry and even the industrial upgrading of the entire country, but it has also hindered the development of electronic-grade polysilicon.

In the past, industrial manufacturing was manual assembly line installation and manufacturing, machine tool processing and manufacturing, and the real concept of industrialized manufacturing process began from private enterprises entering the photovoltaic industry.

Photovoltaic let private enterprises know the purification workshop, process cooling water, temperature zone control, material processing, crystal arrangement and other professionals will use the terminology to consider, this industry allows us to have a transition board from the simple machining industry to the semiconductor industry, and there is a new breakthrough point in industrial upgrading, and entrepreneurs in the whole society are learning this concept in depth.

With the fluctuation of foreign Europa market policy subsidies and currency interest rate differentials, the industry has the characteristics of short return on investment profitability and high returns.

There are too many players in the entire industry chain.

Of course, this was followed by an oversupply and a sharp drop in polysilicon prices, from US$500,000 a ton to 60,000 yuan a tonne, leaving no winner in the market.

This further squeezes out the living space of monocrystalline silicon in the later stage.

Thirdly, the electronic level does not make money.

Because of the fragility of electronic-grade silicon materials, the freight is quite high, and the whole process of transportation from Emei Semiconductor Factory had to be carried out by cars instead of trucks.

The lagging development of Huaguo's semiconductor industry has led to the fact that China's domestic electronic-grade polysilicon has no local sales under the price war of international giants, and it is impossible to sell overseas under the value freight that is almost equal to the cost of materials.

The above three reasons, in the final analysis, are actually the market, that is, there is no local semiconductor market to support the production of upstream raw materials.

However, the root cause of these three problems goes one step further and returns to the process.

There is no market - the process cannot be iterated - there is no market

This creates a perfect closed-loop loop.

Energy consumption is, because of the backward process technology, resulting in Huaguo's electronic-grade polysilicon yield rate is too low, the cost is too high, and there is no advantage to the outside world.

Otherwise, how can it be that the Chinese ship out will lose money, and the foreign country will make money when it comes in?

The main process for preparing polysilicon is called the modified Siemens method, which is the most common and mature method at home and abroad, and the number of polysilicon made by the modified Siemens method accounted for 97.8% in the world in 2020

Since its invention in 1955, the improved Siemens method has a history of more than 60 years until the time of Qingyun's rebirth.

Unfortunately, at the beginning of the century, Huaguo's improved Siemens method was still in the first generation of optimization stage, and it could not compete with the second generation of foreign advanced production capacity at that time.

And fortunately in this time and space, Qingyun, as a water professor majoring in physics and chemistry, has mastered the third-generation improved Siemens method of the entire chlorine chemical system.

No way, compared to others, he has unique conditions.

The world's largest polysilicon production base is in Leshan, Xishu.

The world's three leading polysilicon leaders, the first Tongwei and the third Dongfang Hopu are the enterprises in Xishu, and half of the production capacity of GCL, which ranks second, is also in Leshan.

Because Leshan is known as the Whampoa Military Academy of Huaguo Silicon Industry, it not only has the silicon industry foundation accumulated during the third-line construction period, but also the world's largest silicon material reserves, and the most complete chemical system in China, which produces one-third of the world's polysilicon every year.

In his previous life, although Qingyun was driven to the university by Qin Tianchuan, there was still incense, and he wanted to conduct research on the silicon industry, and Oriental Magnolia alone was available for him to take at any time.

Originally, Qin Tianchuan's purpose in doing this was just to make him worthy of Qin Manman's mathematician as a university professor, and it was naturally a big convenience for this kind of thing.

What Qingyun has to do now is just to reproduce the papers he has worked on in those years from a doctor to a professor in a reasonable way.

Once the reproduction is successful, it will be a devastating crushing for the entire foreign semiconductor raw material industry.

The simplest comparison is that he can immediately increase the investment cost of the polysilicon production line from 200 million US dollars per 1,000 tons to 70 million yuan per 1,000 tons.

The reduction furnace material jumped directly from quartz glass through countless generations in the middle to stainless steel, because at this moment, only he knew how to change the formula so that stainless steel could also be used as a reduction furnace;

The change of materials makes the internal space of a single furnace larger, and then rebuilds the space structure, he can directly increase the number of internal rods from 3 pairs to 48 pairs;

The change is that the annual output of a single furnace is directly increased from 80 tons to 800 tons.

The tenfold increase in output is a dimensionality reduction blow.

At this moment, Emperor Yun is happy in his heart.

That's what he's good at!

This is the accumulation of half of his previous life!

However, Xiao Ya next to her frowned.

The necessity and importance of raw materials, Qin Manman could understand, she couldn't understand, and asked, "Little fart...... Uh......"

The girls were stunned, and then laughed wildly.

"Wimpy kid? Hahahaha! ”

Facing Emperor Yun's constipated appearance, Xiao Ya flashed her eyes, saying that she was sorry and said that she had forgotten the time.

It was never intentional.

Seeing that the little boy's face was getting darker and darker, Xiao Ya hurriedly asked, "Xiaoqing, why are you so concerned about the semiconductor raw material industry?" ”

……

(End of chapter)